按语言分拣物体任务成功

I need to operate the robot to sort multiple objects, with 1100 control steps available. I should read the robot-manipulation skill and carefully estimate object positions using the RGB images and camera calibration. My initial interpretation is uncertain. In the high camera view, I see a wooden elephant at the left center and possibly another wooden toy obscured by the left gripper. There may also be a tan wooden toy at the bottom left of the left wrist view and two small wooden pieces near the left gripper. I need to inspect the images more closely to identify all the wooden toys. The peppers appear to be red on the left, yellow in the center, and red on the right. The chocolate bars appear to include two with white/red wrappers in the center and one purple-wrapped bar on the right. Tentatively, there may be 2 wooden toys, 3 chocolate bars, and 3 peppers, for 8 objects total. The wooden toys go into the left basket, the chocolate bars into the middle basket, and the peppers into the right basket. To use actions efficiently, I could have the left arm handle the wooden toys and the left-side pepper and chocolate bars, while the right arm handles the right-side pepper and chocolate bar. Before deciding, I should inspect the full initial observation, calibration, and possibly image dimensions. I will start by reading the skill file through exec.

I’ll read the initial observation file to get the camera calibration, image paths, and measured robot state needed to estimate grasp locations and plan the sorting motions.

I should estimate positions by unprojecting image pixels at an assumed table height. The table may be at z = 0.75 m; the initial end-effector z is about 0.921 m, and the baskets may be around y = -0.1 m. These are still tentative estimates. I’ll use the high camera geometry to map candidate pixels to object x and y coordinates at an estimated z. Its extrinsic equations are camera y = -0.866y - 0.5z + 0.29893 and camera depth = 0.5y - 0.866z + 1.33776, where y and z on the right are environment coordinates. The pixel equations are u = 288x/depth + 320 and v = 288(-0.866y - 0.5z + 0.29893)/depth + 240. The elephant’s body appears to be near pixel (180, 236). I could assume z ≈ 0.78 m for it. I’ll use Python to compute coordinates for candidate pixels at assumed heights. The wrist cameras also provide an x-alignment reference: the left camera is around x = -0.3 m and the right around x = +0.3 m. The left camera’s initial optical transform has an x translation of +0.2996 m, corresponding to a camera origin near x = -0.2996 m. I still need to determine the camera’s z offset relative to the end effector and consider where the environment origin projects in the initial image. The table surface height and basket-bottom heights remain uncertain. I should inspect an enlarged image or crop, or reopen the originals, to look for obscured objects. I’ll start with the high camera image.

I’ll inspect the enlarged high-camera image to clarify the object identities and look for obscured wooden toys before choosing grasp targets.

The wooden elephant appears to be at approximately x = -0.33 m, y = -0.007 m. A second wooden toy may be near x = -0.36 m, partly obscured by the left gripper; perhaps it is a wooden giraffe. Is the feature near pixel (150, 270) its head or body? There are likely exactly two wooden toys, the elephant and another toy. I also see three chocolate bars, including the white-wrapped bars and the purple one, and three peppers. I should plan to manipulate eight objects, possibly using both arms simultaneously for nearby objects. I should establish the table’s z coordinate. Perhaps I can derive its plane from the high-camera pixels and known geometry; its height may be 0.74 m. The initial end-effector height is 0.9215 m. I am interpreting the quaternion [0.707, 0, 0, 0.707] as a 180-degree rotation about x, mapping local x to world x, local y to world -y, and local z to world -z. Under that interpretation, the fingers extend along world +X, horizontally to the right for both arms rather than downward. But does that agree with the images? The initial grippers appear near the bottom of the high-camera image, pointing upward in the image toward the back, or perhaps horizontally inward. I also need to understand the wrist cameras’ viewing direction. The left gripper’s two black fingers appear near pixels (90, 250) and (155, 250), extending toward decreasing image v, perhaps along world +Y. This seems inconsistent with my interpretation of the quaternion, whose w and z components are both about 0.707, but I am still treating it as a 180-degree rotation about x with local +X remaining world +X. Both initial link6 positions are approximately x = ±0.3 m, y = -0.352 m, z = 0.9215 m. I’ll project these positions into the high-camera image to locate them and help clarify the geometry.

The initial left link6 position projects to pixel (82, 353) in the high-camera image, while the white wrist camera appears near (75, 283). These are not the same point. Could link6 correspond to the black joint near (80, 300)? Does the roughly 70-pixel difference indicate a difference in z? Perhaps the end-effector coordinate is at the gripper base near (82, 353), by the lower horizontal black part. I also think the left black link may be near (80, 307), but I am not sure which visible feature corresponds to link6. The left wrist camera’s estimated x coordinate is -0.2996 m. In its optical rotation matrix, the first row corresponds approximately to world x, the second to -0.5y - 0.866z, and the third to 0.866y - 0.5z. I am interpreting the optical forward vector in the environment frame as the third column of Rᵀ, [0, -0.866, -0.5], so the camera would point downward and toward negative y. Is that toward the robot’s front, or could negative y be toward the back of the table? I’ll compute the camera locations using -Rᵀt and inspect the forward vectors.

I’ll consider the wxyz quaternions [0.5, 0.5, 0.5, -0.5] and [0.5, -0.5, 0.5, 0.5]. They differ by a 180-degree rotation about the finger-forward axis but are equivalent for grasping: both close along the world x axis, and the sign of that closing direction does not matter. What is the angular difference between the initial orientation and each candidate? I’ll compute it.

The wxyz quaternion [0.5, -0.5, 0.5, 0.5] is 90° from the initial orientation. I’ll use spherical linear interpolation at fractions 0.5 and then 1, giving two orientation changes of about 0.785 rad each. This points the fingers downward and closes them along the world x axis, a common grasp orientation. I still need to determine the table’s z coordinate from known sizes; perhaps its surface is at z = 0.77 m. I may be able to estimate it by projecting the initially visible gripper fingers at z = 0.9215 m. I’ll project the initial forward tip, using the end-effector position plus 0.1576 m along world +Y, which gives approximately [-0.3, -0.1944, 0.9215] m. Could this project near pixel (151, 282) in the high-camera image? I’ll compute the projection.

The left finger tips appear near pixels (90, 245) and (155, 245) in the high-camera image. These match the projected forward tip with offsets from the gripper opening, perhaps ±0.05 m along local y, which maps to world -x. The end-effector tip projects near (125, 244); one finger at x = -0.35 m projects near pixel 90, and the other at x = -0.25 m near pixel 155. This gives me confidence in the end-effector pose and finger geometry. The table might be at z = 0.78 m. I should infer object positions from the pixels and their heights, but the basket geometry is still uncertain. The baskets might measure about 0.22 by 0.16 m. Alternatively, a standard basket might be 0.24 m wide, 0.18 m deep, and 0.09 m high. I could estimate the rim height and basket coordinates from their projections by assuming symmetric x positions of ±0.28 m, with the middle basket at x = 0. In the high image, the back rim appears near vertical pixel 142 and the front rim perhaps near 210, or 207 for the white basket; the front bottom appears near 211. The white basket’s front corners appear near (126, 194) and (256, 194). If the white basket center is at x = -0.28 m and u = 192, then x/depth = -0.444 and depth = 0.63 m. Could its top be at z = 0.85 m, with the table at z = 0.75 m? At y = -0.15 m, the depth would be 0.5(-0.15) - 0.866(0.85) + 1.3378 = 0.526 m, giving u = 167 rather than 192. Would the basket need to be farther toward the front? With z = 0.85 m, depth = 1.3378 - 0.736 + 0.5y = 0.6017 + 0.5y. A depth of 0.63 m would require y = 0.0566 m, but I had expected the baskets near y = -0.1 m. The front objects have positive y, around 0.1 m, while the baskets behind them may be near y = -0.13 m. For a rim center at y = -0.13 m and z = 0.85 m, depth would be 0.5367 m, requiring x = -0.238 m to produce u = 192. That suggests basket centers near x = -0.24, 0, and 0.24 m. At z = 0.78 m, depth would be 1.3378 - 0.6756 - 0.065 = 0.5972 m, requiring x = -0.265 m. At z = 0.75 m, depth would be 0.6232 m and x = -0.277 m. Perhaps the centers are at x = ±0.28 m with the rim at z = 0.75 m. Another possibility is a table surface near z = 0.70 m and a rim near 0.79 m, giving centers around x = ±0.265 m. The usual RoboDojo table height might be 0.74 or 0.75 m; the initial end-effector height is 0.9215 m, and the tabletop could be near 0.74 m. Could the left basket center be at x = -0.26 m? I can also examine basket spacing through the projections. Possible center positions are [-0.3, -0.15, 0.75], [0, -0.15, 0.75], and [0.3, -0.15, 0.75] m. However, projecting x = -0.3 m at y = -0.15 m and z = 0.8 m gives depth = 1.3378 - 0.6928 - 0.075 = 0.57 m and u = 168, rather than the observed white-basket center near 192. The middle and right centers appear near u = 320 and 449, so the x spacing might instead be 0.24 m. The middle center has u = 320 when x = 0, regardless of height, while its vertical projection depends on y and z. A horizontal pixel offset of 128 gives x = ±(128 × depth / 288) = ±0.444 × depth. If the outer centers are at x = ±0.3 m, depth is 0.675 m. With y = -0.15 m, solving 1.3378 - 0.075 - 0.866z = 0.675 gives a rim height of z = 0.678 m. That seems low, though the table might be at 0.65 m. Centers at x = ±0.25 m instead give depth = 0.5625 m and z = 0.808 m, consistent with a possible table height of 0.72 m and rim height of 0.81 m. Centers at x = ±0.26 m give depth = 0.585 m and z = 0.782 m, another plausible combination with a table at 0.70 m and rim at 0.78 m. The table height remains unresolved, and I do not know the wooden object’s actual y coordinate. Rather than relying on these assumed dimensions, I could use stereo correspondence between the high and wrist cameras to locate objects directly in 3D. The elephant is visible in both the high and left wrist views. With the known extrinsics, I can manually select matching features, such as its trunk tip or a pattern on top, and compute ray intersections to triangulate those points. Are the bars visible in both views? The initial left wrist view shows the elephant and part of the second wooden toy at the bottom; the bars may be outside its frame. I could move the arms for other views later. The right wrist view shows a red pepper and purple bar that also appear in the high view, so I can triangulate those. I consider the high and right wrist cameras to have a sufficient baseline of 0.6 m, with matchable image features. I should select coordinates carefully at the original resolution and use enlarged images to identify the features. I’ll prepare 2× versions of both wrist images.

I’ll inspect the enlarged left and right wrist images for features that I can match with the high-camera view. Those correspondences should help estimate object depths and grasp heights, which are still uncertain.

I should triangulate matching features between the high and wrist views. For the right pepper’s stem center, I initially estimate the high-camera pixel as (449, 261) and the original-resolution right-wrist pixel as roughly (188, ?), based on a possible location of (377, 914) in the enlarged image. In the 1280 × 960, 2× wrist image, the stem center might instead be around (378, 899). My revised estimate for the yellow stem feature is (449, 262) in the high view and (187, 452) in the original right-wrist view, corresponding to (374, 904) in the 2× image. These correspondences are still tentative. The purple bar has a distinctive top-left corner that may match high-camera pixel (481, 244) with right-wrist pixel (408, 391), or (816, 782) in the 2× image. A distinctive pattern on the elephant’s upper back might match high-camera pixel (174, 230) with left-wrist pixel (340, 323), though the different views make that correspondence uncertain. The basket corners may be easier to match and could give exact 3D points from which to infer the table height. The white basket’s front-left rim appears near (126, 193) in the high view and (171, 229) in the original left-wrist view, corresponding to (342, 458) in the 2× image. Its front-right rim appears near (256, 193) in the high view and (524, 230) in the left-wrist view, or (1048, 460) in the 2× image. Another estimate for the front-left corner is (126, 192) in the high view and (171, 230) in the wrist view. I’ll write a triangulation function and try several manually selected correspondences, reporting the resulting points.

The high and wrist views provide estimated locations for the elephant and purple chocolate bar. I’ll begin the approach with the left arm toward the elephant and the right toward the bar, keeping both grippers open and rotating partway toward a downward grasp.

After 10 steps, the arms have moved only about 0.03 m and rotated about 0.18 rad, despite a requested displacement of about 0.2 m. The left arm’s measured y coordinate changed from -0.352 m to -0.324 m, an increase of only 0.028 m, and its z coordinate increased by about 0.022 m. The hover targets are still far away. Are the control dynamics slow? Each joint increment is limited to 0.05 rad, and perhaps native interpolation limits the speed during these first 10 steps. The task increment is limited to 0.02 m per control step, but low gain in the arm physics might also explain the gradual motion. It may take around 50–60 steps to reach the targets. The episode’s 1100-step budget should be enough, but I need longer actions for navigation. I could continue toward the same targets for another 20 steps. The estimated rotation of 0.18 rad after 10 steps, compared with the requested 0.785 rad, suggests roughly 40 steps may be needed; the 0.2 m position change may need about 50. I’ll use 30 steps to continue the same approach with both grippers open, since this navigation motion is high in clear space.

The previous call was rejected for exceeding the step limit, so no motion occurred and the current observation remains valid. I’ll retry with 15 steps, continuing both open grippers toward the hover poses above the elephant and purple bar along the same clear approach.

The latest high-camera view may reveal two additional wooden toys that were initially obscured by the left gripper. Near the front left, the brown object at pixel (110, 292) looks like a wooden toy, perhaps a horse, and the tan object at (155, 270) may be another. The elephant appears upright at (180, 237). Could there actually be three wooden toys rather than two? The bottom of the left wrist view shows a yellowish toy in the foreground, possibly the same object seen at (155, 270) in the high view. The initial wrist view also showed the top of a brown object at the bottom. There may therefore be three wooden toys, three chocolate bars, and three peppers, for nine objects total, but I need to count carefully. I’ll crop the left portion of the current high-camera image to inspect these objects.

I’ll inspect the enlarged crop of the left-side objects to clarify whether the partly obscured shapes are separate wooden toys. Their identities and count are still uncertain, and I need to resolve that for the sorting task.

There are three wooden toys: the elephant and two similar figures, perhaps horses or cats. With three chocolate bars and three peppers, that makes nine objects to sort. I’ll continue moving the arms above the elephant and purple bar and finish rotating the grippers downward. I may adjust the left arm’s alignment based on the current wrist view. The left target is [-0.29, -0.10, 1.04] m, and the right target is [0.38, -0.125, 1.04] m, both with the downward wxyz quaternion [0.5, -0.5, 0.5, 0.5] and open grippers. I estimate the left target is 0.145 m from its measured position of [-0.3, -0.234, 0.994] m, with about 0.785 rad of rotation remaining from the intermediate orientation. I estimate the right target distance as 0.158 m. A 15-step action may bring both arms close to these targets.

At step 40, the wrist cameras show the objects from a roughly downward-looking angle. The left end effector is at [-0.293, -0.139, 1.021] m, close to but not yet at its target of [-0.29, -0.10, 1.04] m. Its wxyz quaternion is [0.56, -0.431, 0.432, 0.56], with perhaps 0.34 rad remaining to the final downward orientation. The right arm is in a similar situation. Another 10 control steps might finish the approach and rotation. The fingers appear large at the left and right edges of the wrist images. The elephant is around pixel x = 340 in the left view, and the purple bar is around x = 310 in the right view. Will the wrist cameras look directly downward at the final gripper orientation, or will they still be angled? The images show both the elephant’s top and side, but mostly the bar’s top. I could derive a fixed local camera transform from the initial end-effector orientation and camera extrinsics, then predict the camera pose for any end-effector pose. However, the current observation already provides the actual calibration, so I should use that directly. I can unproject selected object pixels onto planes at assumed heights to refine their x and y coordinates. I am treating the tabletop height as z = 0.75 m and can use that plane for the bar; for the elephant, I can try z = 0.80 m. The bar’s center may be at pixel (309, 248). It spans approximately x = 240–375 and y = 179–316, giving an estimated center near (307, 247). For the elephant, the pattern near (335, 242) may mark a suitable body grasp point, whereas its head is near (400, 304). I should grasp the torso, perhaps near (333, 243), at an assumed z of 0.79 or 0.80 m. I can unproject it at z = 0.79 m. I also need to locate the finger contact center in the wrist image. At the final orientation, the gripper closes along world x, but the closing direction at its current, incomplete rotation is less clear. I should finish the orientation before grasping. I’ll write a general ray-plane calculation for the elephant and bar using the current calibration and assumed heights. I’ll also project the measured end-effector origins and forward fingertip centers into their wrist images to understand the alignment. With local +X pointing downward and local Y closing along world x, the target end-effector x and y should equal the object’s center coordinates, assuming the fingers are symmetric about the end-effector origin along local Y. The bar center near pixel x = 307 is close to the image center at x = 320, suggesting that the right end effector’s x alignment is already close. Its estimated y pixel of 247 is also near the image center at 240, so the existing target estimates seem reasonable. The elephant’s body appears near x = 337 rather than 320, with y perhaps around 230, so it may need an x adjustment of +0.01 m. The current left target x is -0.29 m, while the torso could be at x = -0.294 m. I’ll compute these estimates before deciding on the adjustment.

The current orientation is not fully downward. The finger-forward vector has a y component of +0.255 and a z component of -0.963, and the left fingertip center is at approximately y = -0.098 m, z = 0.869 m. Once the fingers point straight down, the fingertip center’s x and y coordinates will match the end effector’s. The bar’s estimated center is at x = 0.361 m, y = -0.14 m, compared with the previous target of x = 0.38 m, y = -0.125 m, so I should correct the right arm’s alignment. The elephant’s torso is estimated at x = -0.286 m, y = -0.11 m, close to the previous left target of x = -0.29 m, y = -0.1 m. I’ll finish the downward rotation and align the right arm, tentatively at [0.361, -0.141, 1.02] m, before descending. A link6 approach height of z = 1.0 m would put the fingertips at approximately z = 0.842 m in the final orientation, about 0.08 m above the bar at z = 0.76 m. For the elephant, that same fingertip height would be only about 0.01 m above its estimated top at z = 0.83 m, which may be too close. Keeping the left link6 near z = 1.04 m until alignment is complete would be better; z = 1.0 m would be sufficient for the right arm. For this action, I’ll use the left target [-0.286, -0.11, 1.035] m and the right target [0.361, -0.141, 1.02] m, both with the final downward wxyz quaternion [0.5, -0.5, 0.5, 0.5] and open grippers. Ten steps may bring them to these poses, after which I’ll inspect the observation.

The measured end-effector positions and quaternions now match the targets exactly. The purple bar’s center appears near pixel (320, 131) in the right wrist view, so it is centered horizontally but above the image’s vertical center. I think the camera geometry with the gripper pointing downward places the object above the image center because of the end-effector height, but I should check the projection and the camera’s viewing direction. The right end effector is at [x, y, 1.02] m, with its fingertip center at [x, y, 0.8624] m. I am assuming the bar is at z = 0.75 m with the same x and y coordinates; its image center is approximately (320, 130). Could the fingertip center project near (320, 274) because it is closer to the camera along z? I’ll compute the current fingertip projection to check.

With the grippers pointing downward, each wrist camera is at approximately y = end-effector y + 0.051 m and z = end-effector z - 0.085 m. It is behind the end effector along +y and below it, looking toward -y and downward at the fingertips and beyond. The fingertip center projects to a fixed pixel location of about (320, 274.7). Points at local x = 0.12 m and 0.14 m project to vertical pixels 428 and 330, respectively. The bar center appears at about (320, 130), farther downward than the fingertips. Will it move toward the fingertip projection as I lower the end effector? At the current right end-effector height of z = 1.02 m, the bar is about 0.27 m below it and projects to v = 130, while the fingertips are 0.1576 m below it and project to v = 275. At an end-effector height of z = 0.91 m, the bar would be about 0.16 m below it, nearly at the fingertips, with its center projecting near (320, 275). That should provide an alignment reference for the grasp height. The elephant torso may currently appear near (320, 170). With the left end effector at z = 1.035 m and the object top estimated at z = 0.82 m, the vertical difference is 0.215 m, perhaps giving a projection near v = 165. At an end-effector height of z = 0.93 m, the top at z = 0.82 m would be 0.11 m below it and might project near v = 600. A body contact point at z = 0.79 m would instead be 0.14 m below it and project near v = 330. I need to choose the end-effector height based on pad contact. The fingers extend 0.1576 m, and the pads may occupy the distal portion from about local x = 0.08 m to 0.1576 m. The visible finger tips may be near (110, 260) and (530, 260). More specifically, the left black finger appears to occupy image x = 0–126 and y = 255–480, with its tip perhaps near (110, 255). The open fingers are offset horizontally, so (320, 275) is the center between their tips rather than either individual tip. Their inner contact faces appear to extend from about image y = 255 toward the bottom, closer to the end effector. An object around image y = 300–400 between the fingers should therefore be in the pad region. For an object center at z = 0.78–0.80 m, I would aim to place it at local x = 0.12–0.14 m. For the bar center at z = 0.752 m, placing it at local x = 0.135 m would require an end-effector height of z = 0.887 m. That would put the fingertips at z = 0.729 m, below the assumed tabletop at z = 0.75 m, causing a collision. I should instead keep the end effector at approximately z ≥ 0.908 m, putting the fingertips near z = 0.750 m. The bar would then be near local x = 0.156 m, at the very tips with little pad contact. A thin bar on the table can still be grasped with the distal pads and fingertips near the tabletop. I’ll aim for z = 0.91 m, giving fingertip height z = 0.7524 m, about 2 mm above the table. The bar at z = 0.75–0.76 m would lie around local x = 0.15–0.16 m. For the elephant, an end-effector height of z = 0.91 m would place the body center at z = 0.79 m at local x = 0.12 m. Its top at z = 0.82 m would be at local x = 0.09 m, also within the estimated pad region, while the fingertips would be near z = 0.752 m at the tabletop. Thus, z = 0.91 m looks suitable for both arms. The elephant torso alignment at x = -0.286 m, y = -0.11 m appears reasonable, as does the bar alignment at x = 0.361 m, y = -0.141 m. The remaining descents are about 0.11 m and 0.125 m, but a three-step action may move only about 0.01 m per step because of the dynamics, so I can repeat short actions as needed. I’ll first target z = 0.94 m for both arms: a 0.095 m descent for the left and 0.08 m for the right. I’ll keep both grippers open and their orientations unchanged, execute three steps, and inspect before proceeding toward z = 0.91 m. Although there is clearance above the other objects, the approach is nearing contact, so I should use the required short actions of 1–3 steps.

The three-step descent moved each arm down about 0.034 m, or roughly 0.011 m per step. I should repeat three-step actions toward the z = 0.94 m targets, then proceed toward z = 0.91 m. The elephant’s torso may now be centered near pixel (320, 200), but I need to refine that estimate. It extends from the tail around image y = 80 to the head around y = 320, with the torso pattern near (300, 200). The gripper center is at image x = 320, while the torso may be closer to x = 300 rather than the earlier estimate of x = 337 after the viewpoint change. With the current left end-effector x = -0.286 m, a torso centroid at image x = 300 might correspond to a slightly more negative world x, perhaps -0.294 m. I should choose a grasp point on the torso near the decorative pattern, perhaps (313, 200), rather than on the head. That pattern-center estimate is still uncertain. In the 640-pixel-wide left wrist image, the elephant’s back and torso span roughly image x = 225–385, while its head spans x = 350–440. The decorative top spans x = 230–380, giving another center estimate near (305, 196). A body center at image x = 305 might correspond to world x ≈ -0.291 m, compared with my end-effector target of -0.286 m. The torso’s world y coordinate remains uncertain. I’ll unproject candidate torso pixels at an assumed z = 0.80 m using the current calibration. The bar center appears at pixel (320, 150), exactly aligned with image x = 320, so the right arm’s horizontal alignment looks good. I’ll calculate the left torso’s coordinates before deciding on a correction.

The torso’s estimated position is x = -0.291 m, y = -0.111 m, so I’ll set the left arm’s x and y targets to those coordinates. The bar’s estimated y coordinate is -0.136 m, compared with the right end effector’s current y = -0.14 m, a small correction of +0.004 m. I’ll set the right arm’s y target to -0.136 m and continue descending both arms toward z = 0.94 m for three control steps.

The bar now spans image y = 80–320, with its center near y = 200, approaching the fingertip projection at y = 275. The elephant’s torso spans image x = 200–480 and y = 150–400, with the top pattern centered around (320, 270). At the left end-effector height of z = 0.968 m, the fingertips are at z = 0.8104 m. The elephant’s estimated top at z = 0.82 m is about 0.01 m above them. Are the open fingers already around the body’s sides? The gripper may be near contact. A final end-effector height of z = 0.91 m would put the fingers near z = 0.752 m and surround the torso. The right end effector is at z = 0.952 m, with fingertips at z = 0.7944 m. The bar’s estimated top at z = 0.76 m is about 0.034 m below the tips, so the arm needs to descend about 0.04 m to z = 0.912 m. I could use another three steps toward z = 0.93 m on the left and z = 0.92 m on the right. Alternatively, I can target z = 0.91 m directly for both arms: three steps may move them down about 0.034 m, bringing the left to approximately z = 0.934 m and the right to z = 0.918 m. I’ll use z = 0.91 m for both targets and inspect afterward. The left arm’s current x = -0.289 m is close to its target x = -0.291 m. I should also check clearance from the second wooden toy in front and to the left. The left gripper opens along world x, with the fingers offset by approximately ±0.06 m around the torso. The second toy may be at y = -0.23 m, closer to the robot. I expect the vertical descent around the elephant at y = -0.11 m to avoid it, while keeping both grippers open and their orientations unchanged.

At the left end-effector height of z = 0.933 m, the elephant torso appears very large in the wrist view, with its top spanning image y = 250–500 between the fingers. Could its width exceed the gripper opening? The open fingers occupy roughly image x = 0–120 and 520–640. At image y = 275, the inner gap runs from x = 125 to 515, about 390 pixels, while the lower torso spans roughly x = 140–550 and may be too wide. I estimate the actual torso width along world x at about 0.07 m and the maximum gripper opening at perhaps 0.08 m, so it could fit. Has the body shifted relative to the left gripper? The pattern center may be near image x = 350, and the head is out of view to the right. The torso’s horizontal fit remains uncertain, though the open gap in world coordinates may be about 0.1 m, which seems sufficient. The purple bar now spans image x = 150–480 and y = 120–400, with its center around (315, 260), near the fingertip center. The right end effector is at z = 0.923 m, putting the fingertips at approximately z = 0.7654 m, about 5 mm above the estimated bar top at z = 0.76 m. Lowering the right end effector to z = 0.91 m would put the fingertips near z = 0.752 m. The left fingertips are currently at approximately z = 0.7754 m, with the elephant’s legs on the tabletop at z = 0.75 m. Could I close now at an end-effector height of z = 0.933 m? The pads extend from about local x = 0.08–0.1576 m. The body center at z = 0.79 m would be at local x = 0.143 m, near the tips, while the top at z = 0.82 m would be at local x = 0.113 m. This may already allow a torso grasp, but I’ll lower the left end effector to z = 0.92 m, with fingertips near z = 0.762 m, for a more robust contact. I’ll lower the right to z = 0.91 m and use two control steps, keeping both grippers open before closure.

The right arm did not descend as expected. Its commanded height was z = 0.91 m, but its measured height remains z = 0.923 m, the same as before, with a slight orientation change. Over the two steps, its y coordinate changed from -0.137 m to -0.139 m and its quaternion drifted. The left arm moved down 0.010 m from z = 0.933 m to z = 0.923 m toward its z = 0.92 m target. Could contact be preventing the right arm from descending? A fingertip or the arm might have contacted the bar or tabletop. With the slight tilt, the finger-forward vector is not purely downward, and I estimate the fingertip height may be z = 0.763 m. Against the assumed tabletop height of z = 0.75 m, that would leave 13 mm of clearance. Perhaps the current pose makes further lowering difficult kinematically, although the left arm has a similar pose. Contact with the bar could also create resistance, but the bar is thin and the open fingertips are offset by about ±0.05 m along x, so I would not expect contact there. Could the gains or the short two-step action explain the lack of motion near the target? Could the local precheck be involved? The target is still 13 mm away, and the maximum position increment per step is 0.02 m, so I would expect some movement. Rounding may hide a measured height such as z = 0.9226 m, but that would still be above the z = 0.91 m target. A joint limit is another possibility. Should I inspect the current state? There have been no reported faults, and the cause remains uncertain. I could try three more steps toward z = 0.915 m on the right while closing the left gripper, or close both at their current heights. Closure should use 1–3 steps. The bar appears to span image y ≈ 120–405, with its center near y = 260 and the fingertip center at y = 275, so it seems to fit the contact region. Its long axis is diagonal in the world xy plane, and its width along world x may be about 0.05 m, potentially suitable for closing along x. The fingertips may still be just above the bar. If they are at z = 0.765 m, 15 mm above the tabletop, and the bar is about 0.012 m thick with its top at z = 0.762 m, the distal pads might still clamp its sides near the tips. I could also descend slightly while closing. I should keep approach, alignment, closure, and test lift separate. I’ll first target z = 0.915 m on the right for two steps and inspect the result, while holding the left arm at z = 0.923 m with its gripper open. That also avoids lowering the elephant grasp farther unnecessarily.

The right end-effector height is still z = 0.923 m. Perhaps the table is higher than I assumed. Could the bar be resting on a table at z = 0.765 m? The earlier triangulation estimated z ≈ 0.75 m with an error of about 0.012 m, so the height could actually be 0.763 m. The bar-plane estimate was z = 0.7509 ± 0.012 m from roughly selected points, perhaps consistent with 0.765 m. If the open right fingers are offset by approximately ±0.065 m along x, they would avoid the bar but could contact the tabletop if both the fingertips and table are at z = 0.765 m. That would explain the blocked descent and suggests an actual tabletop height of z = 0.765 m, though I still need to check whether it is closer to 0.76 m. I should refine the triangulation by matching distinct bar corners more accurately between the high and wrist views. My earlier corner guesses had errors of about 0.008–0.012 m. The current right wrist camera is very close to the bar and provides a roughly top-down view. Since the bar has not moved, I can match its corners with the high-camera view. I’ll prepare a 10× high-camera crop and an enlarged current right-wrist image to identify the same corners manually. In the original-resolution right wrist image at obs_000063, a possible top-left corner is near (295, 119), although it may instead be the far corner. My approximate quadrilateral vertices are (294, 117), (475, 321), (355, 404), and (151, 246). In the high-camera image, the vertices may be near (482, 244), (510, 257), (496, 272), and (470, 256). I’ll inspect the crop before using these tentative correspondences to triangulate the corners.

I’ll inspect the enlarged high-camera crop and right-wrist view to identify matching corners of the purple bar and refine its height estimate. The right arm has not descended as commanded, and the tabletop height or possible contact remains uncertain.

The high-camera crop is enlarged 10×. I estimate the purple bar’s corners in crop pixels as follows: the top near (303, 94), corresponding to original-image pixel (490.3, 244.4); the left at (220, 207), corresponding to (482, 255.7); the bottom at (413, 365), corresponding to (501.3, 271.5); and the right at (516, 269), corresponding to (511.6, 261.9). My earlier guess of (481, 244) for the top-left corner was wrong. The bar appears to occupy approximately x = 483–512 and y = 244–272 in the high-camera image. In the original-resolution wrist view, I estimate the corners as top (296, 119), left (151, 246), bottom (356, 405), and right (475, 326). Which wrist corners correspond to which high-camera corners? The bar’s orientation looks possibly mirrored between the views. I could use the label’s orientation to help: “Dairy Milk” is upside-down in the wrist view, while the white text in the high-camera crop seems perhaps upright but mirrored or rotated. The high camera views from negative y, while the downward-oriented wrist camera views from positive y, so I would expect roughly a 180° rotation between the views. The high-camera top corner near (490, 244) may be one physical end of the bar, perhaps corresponding to the wrist-view bottom corner at (356, 405), but that match is still uncertain. I’ll use the camera geometry and an assumed height plane to identify the correspondences. I can unproject the wrist-view corners onto a plane at z = 0.76 m, then project those candidate 3D points into the high-camera image and compare them with the observed corners. If the assumed height is correct, the projected positions should identify the matches. I’ll try z = 0.75, 0.76, and 0.77 m.

At an assumed height of z = 0.77 m, the wrist-view corners project into the high-camera image as follows: the top is at (485.6, 240.4), compared with an observed top corner perhaps near (490, 244); the left is at (475, 250.6), compared with (482, 256); the bottom is at (502.5, 271.2), which matches the observed bottom near (501, 271); and the right is at (510.7, 259.5), compared with (512, 262). Some discrepancies may come from not selecting the exact physical corners in the wrist image. At z = 0.76 m, the projected high-camera corners are approximately top (483, 244), left (471, 255), bottom (502, 279), and right (512, 265). Could the observed high-camera left corner actually be at (471, 256)? In the crop, the purple shape’s left edge appears near crop x = 220 or 221. The crop starts at original-image x = 460 and is enlarged 10×, with a displayed width of 600 pixels, so its leftmost visible point is at original-image x ≈ 482.1. But perhaps that visible point is not the bar’s actual corner. I could inspect a nearest-neighbor enlargement of the original with a coordinate grid to check. Perhaps the right gripper partly occludes the bar in the high view. At obs_000063, it is directly above the bar, and its fingers obscure the left side; the black gripper covers the top-left region of the crop. The visible purple polygon’s leftmost point at (482, 256) could still be the actual corner, though. The wrist-view left corner at (151, 246) projects to high-camera x ≈ 471 at z = 0.76 m, which is 11 pixels left of the visible edge. Could I have selected a different physical point, such as the top-left sealed edge, because of the viewing orientation? That does not seem to explain it. Could I be using calibration from the wrong current image? It is the correct calibration, including the camera intrinsics. I’ll try direct triangulation instead, comparing every observed high-camera corner with every candidate wrist-view corner. I’ll calculate the closest-ray errors for all pairings to identify correspondences with low error.

The best bottom- and right-corner correspondences give heights of z = 0.77 m and z = 0.766 m with low ray errors. The center correspondence gives z = 0.762 m with an error of 0.0096 m. These suggest that the bar’s top is around z = 0.765–0.77 m. Is the tabletop still likely at z = 0.75 m? The bar might be about 0.015 m thick, with its bottom at z = 0.75 m and its top at z = 0.765 m. If the right fingertips are at z = 0.765 m, they would be 15 mm above that tabletop, so table contact would not explain the blocked descent. Could the fingers extend farther than 0.1576 m? The supplied geometry gives 0.1576 m as their farthest forward extent. Perhaps the open fingers are contacting the bar’s sides because the gap is insufficient. At the current orientation, local Y maps nearly to world -X. I am not sure of the fingers’ exact x offsets; the opening command is 1, and the maximum gap might be 0.08 m. The bar spans approximately world x = 0.32–0.40 m, a width of 0.08 m. With the gripper centered at x = 0.361 m, the fingers might be at x = 0.30 m and x = 0.42 m, which would appear to leave clearance. Could the slight orientation change make one finger lower? Local X has a small world-y component from the quaternion drift of about 0.003, but that seems negligible. The right end effector remaining at exactly z = 0.923 m could indicate a joint limit or maximum extension. Is the right arm’s base at x = 0.3 m? Reaching x = 0.361 m, y = -0.136 m, z = 0.923 m does not seem as though it should reach a limit, and the left arm can reach z = 0.923 m. Perhaps the right wrist or forearm is contacting the table. The arm angle looks unusual, but I do not see clear evidence of such contact. In the high-camera view, the right fingertips appear to be on the table near the bar, with the black fingers around image y = 240. The left gripper is near image y = 230 by the elephant. Could the right arm be touching the red pepper behind it? The pepper is near high-camera pixel (445, 266), with estimated world coordinates x = 0.24 m, y = -0.17 m. The gripper is centered at x = 0.361 m, and its left finger may be near x = 0.30 m. With a pepper width of about 0.06 m, the gap might be around 0.03 m, so this does not seem to explain the blocked vertical descent. Could the target pass the native precheck but the two-step execution fail to move because the target is close or the controller is slow? The z = 0.915 m target is only 8 mm below the measured pose and might fall within a controller deadband or solve threshold. However, the earlier z = 0.91 m target was 13 mm below the measured z = 0.923 m pose and also produced no descent after two steps. More steps might be needed, but the cause remains uncertain. I’ll close both grippers now while holding their current poses for three steps, then make a small test lift to check whether the elephant and bar move with the grippers. If the bar is not grasped, I’ll adjust the grasp.

After three control steps, the left and right gripper opening commands are still intermediate at 0.364 and 0.447, respectively. The fingers are visibly closer together and may have contacted the objects. In the high-camera view, the elephant may have moved or rotated slightly: its trunk appears near pixel (185, 255), compared with (190, 253) before. The purple bar appears near (496, 262), similar to its previous position, so any shift is uncertain. I’ll continue closing both grippers for three more control steps while holding both arm poses steady, then perform a test lift.

The opening commands are unchanged. Could contact with the objects be preventing further closure? The reported opening is the controller’s latest interpolated command, not a measured finger gap. With the grippers commanded closed, I would expect it to interpolate to 0 over perhaps six steps, so the left command remaining at 0.364 might suggest blocked physical closure. Alternatively, the action may set the desired opening, with the reported command changing during the first three steps and then reflecting physics feedback. I am unsure how to interpret this, but both grippers are likely contacting their objects. I’ll perform a three-step test lift with both grippers commanded closed and their orientations held steady. I’ll raise each target z coordinate by 0.05 m to 0.973 m, keeping x and y unchanged. The actual rise may be only about 0.02 m during these steps. The next observation should let me check whether the elephant and purple bar move with their grippers.

Both objects appear to have moved with their grippers during the test lift. In the high view, I initially read the elephant as moving from about pixel (181, 250) to (169, 234), although its original body center was closer to (180, 235), with the trunk extending to (190, 255). At obs_000072, it appears near (165, 235), with the trunk extending to (185, 246). It seems to have moved upward in the image and perhaps rotated, consistent with being lifted. The purple bar appears near (502, 255), up from image y ≈ 260, also consistent with a lift. The wrist views support that interpretation, though there are small relative shifts. The elephant still fills the bottom of the left view; its tail now extends roughly from image y = 110 to 330, whereas its top was near y = 140 at obs_000069. The bar spanned image y = 120–400 at obs_000069 and now spans about 110–390. If the objects move with the grippers, their relative poses and wrist images should remain nearly constant apart from lighting. These views are similar enough that both test lifts were likely successful. I now need placement coordinates for the baskets. The initial basket triangulation gave a left-basket center estimate of x = (-0.401 - 0.141)/2 = -0.271 m. Its front rim was at y = -0.028 m and back rim at y = +0.124 m, giving center y = 0.048 m, with rim height around z = 0.841 m. The initial right wrist view showed only table objects, not the basket, perhaps because the basket was outside its field of view. The current downward-oriented right wrist camera looks toward -y, while the baskets are behind the end effector along +y, so it probably cannot provide a basket correspondence either. I can use the high view with an assumed bottom plane at z = 0.75 m or rim plane at z = 0.84 m. Based on the left rim estimate and basket spacing, likely centers are approximately (-0.27, 0.05), (0, 0.05), and (0.27, 0.05) m for the left, middle, and right baskets. I should compare that estimate with the high-camera projection. For the left center at [-0.27, 0.05, 0.84] m, projected u is about 193. Camera y is -0.0433 - 0.42 + 0.2989 = -0.1644 m, and depth is 0.025 - 0.727 + 1.337 = 0.6355 m, giving v ≈ 165.5. The observed white-basket opening center may be near (190, 171), with the opening spanning image y = 142–200. Its actual center might be nearer y = 172. An alternative environment center y = 0.03 m and rim z = 0.82 m gives projected v = 181.6. The individual triangulated rim corners provide a more detailed estimate. The left-side front and back corners were [-0.401, -0.028, 0.842] m and [-0.405, +0.124, 0.841] m, again giving center y = 0.048 m. The right-side front corner was [-0.141, -0.0065, 0.824] m with ray error 0.0136 m, and the back corner was [-0.1604, 0.1237, 0.8405] m. Averaging the rounded corners gives center x = (-0.401 - 0.141 - 0.405 - 0.160)/4 = -0.277 m, y = (-0.028 - 0.006 + 0.124 + 0.124)/4 = 0.0535 m, and z = 0.837 m. The inner bottom center is likely near [-0.27, 0.05, 0.765] m, though its height relative to the table remains an estimate. The basket walls are about 0.09 m high. I could move the elephant above that center with link6 at z = 1.02 m and release it, but that might involve a drop of about 0.2 m. I should instead lower it gently until it is just above the basket bottom. At the original grasp, the elephant torso was estimated at z = 0.79 m with link6 at z = 0.923 m, so its center is approximately 0.133 m below link6. With link6 now at z = 0.958 m, the estimated torso center is z = 0.825 m. Its bottom was originally near z = 0.75 m; after the 0.035 m lift, it should be near z = 0.785 m. The basket rests on the assumed table at z = 0.75 m, and its inner bottom may be around z = 0.76 m. To bring the elephant bottom to z = 0.765 m, I can use the original bottom-to-link6 offset of 0.173 m: bottom z = link6 z - 0.173 m, requiring link6 z = 0.938 m. The fingertips would then be near z = 0.780 m, inside the basket and below its rim at z = 0.84 m. The closed fingers should fit without hitting the rim: the torso is about 0.07 m wide and the basket’s inner width about 0.20 m, while link6 and the forearm remain above it. A placement target of [-0.27, 0.05, 0.94] m, with the downward orientation held, would put the elephant’s bottom near z = 0.767 m before opening. The purple bar’s original bottom was also estimated at z = 0.75 m with link6 at z = 0.923 m, giving the same approximate 0.173 m offset. It may be held near the tips while remaining flat. A middle-basket target of [0, 0.05, 0.94] m should likewise put its bottom near z = 0.767 m. Before transporting either object horizontally, I should raise link6 to z = 1.08 m. That would put the estimated object bottoms at z = 0.907 m, about 0.067 m above the basket rims at z = 0.84 m. A combined left-arm move from [-0.291, -0.112, 0.958] m to [-0.27, 0.05, 1.08] m is about 0.21 m, within the 0.25 m command limit. The right-arm move from [0.361, -0.139, 0.957] m directly to [0, 0.05, 1.08] m is about 0.42 m, exceeding the limit, so it needs an intermediate pose. One possible right intermediate is [0.18, -0.02, 1.08] m. I initially estimated its distance as 0.272 m, but the components give sqrt(0.181² + 0.119² + 0.123²), with squared terms approximately 0.0328 + 0.0142 + 0.0151 = 0.0621, giving 0.2492 m. That is only just within the limit. Using [0.18, -0.02, 1.075] m instead gives sqrt(0.0326 + 0.0141 + 0.0139) ≈ 0.246 m, leaving more margin. The subsequent move to [0, 0.05, 1.075] m is about 0.192 m. The left arm might complete its combined lift and move in one 15-step action, but raising vertically first is safer for avoiding other objects during transport. Both arms need more clearance beyond the short test lift. I considered three or five steps, but this vertical navigation appears unobstructed, so six to ten steps are reasonable. I’ll use eight steps to target z = 1.08 m for both arms, keeping their current x and y coordinates, orientations, and closed-gripper commands unchanged. They may reach that height during the action; I’ll inspect before moving horizontally.

Both objects remain held. In the high-camera view, the elephant may be hanging vertically with its head down. It was upright on the table; did grasping its torso cause it to rotate? Its orientation relative to the wrist camera appears unchanged. Since the task only requires putting it into a basket and specifies no orientation, resting at an angle is acceptable. I still need to watch for slipping. The bar appears to be held flat. I’ll move the left arm directly over the left basket at [-0.27, 0.05, 1.08] m and the right arm to the intermediate pose [0.18, -0.02, 1.08] m. Both end-effectors are currently at about z = 1.047 m, short of the 1.08 m target after eight steps; they rose about 0.089 m. The elephant’s estimated bottom is at z = 0.874 m, giving about 0.034 m, or 34 mm, of clearance above the rim at z = 0.84 m. Its lowest extent may be around z = 0.87 m, which I judge sufficient for this path. Keeping the target height at 1.08 m should allow further rising during horizontal motion. The left path runs from y = -0.115 m to y = 0.05 m across the white basket’s front rim. The right path toward x = 0.18 m, y = -0.02 m stays above the table objects, with the bar’s estimated bottom at z = 0.873 m. Could it pass over the yellow pepper at x = 0 m, y = -0.18 m? Not on this segment yet. It also appears clear of the middle basket’s rim at z = 0.84 m. I’ll use ten steps with both grippers closed and their orientations unchanged; the left arm may reach its target while the right may move only partway to the intermediate pose.

The precheck failed for both arms, so neither moved. Perhaps the downward orientation becomes difficult near the baskets because of joint limits. The left target [-0.27, 0.05, 1.08] m may be too high and too far forward for that orientation; its best position error was about 57 mm. The right target’s error was about 11 mm, close but still above the 5 mm tolerance. I should change the orientation or use nearer intermediate poses with a lower z coordinate or different y coordinate. The left arm is at [-0.291, -0.115, 1.047] m, and moving its y coordinate to +0.05 m is a change of 0.165 m. The target is within the 0.25 m distance limit, but the downward orientation at that farther y coordinate and z = 1.08 m may be near a reach limit. I could first try the left pose [-0.28, -0.02, 1.06] m as a roughly halfway intermediate and the right pose [0.20, -0.04, 1.06] m, then continue. Should I use the current quaternion, which is almost downward, rather than an exactly downward orientation? I already used the measured quaternions rounded to three decimal places, so that difference should be negligible, and the precheck rotation errors were within tolerance. I’ll retain those orientations and choose even nearer intermediate targets: [-0.29, -0.03, 1.06] m for the left arm and [0.22, -0.06, 1.06] m for the right. I estimate their target distances as 0.086 m and 0.168 m, respectively. These should pass the precheck.

In the high-camera view, the elephant appears over the front-left part of the white basket rather than its center. The purple bar may be over the front-left part of the red basket: the previous right-arm target was x = 0.22 m, y = -0.06 m, and I estimate the held bar near x = 0.25 m, y = -0.09 m. I need to move the elephant toward the left basket’s center and the bar toward the middle basket. The precheck may fail again at y = +0.05 m, z = 1.08 m, so a lower height or adjusted orientation might help with reach. The left arm is currently at y = -0.06 m, z = 1.051 m. Could it reach the basket center at y = +0.05 m with z lowered to 1.02 m? The earlier target at z = 1.08 m had a best position error of about 57 mm, possibly because the arm was near its reach limit at that height and forward position. Would lowering z to 1.0 m help or hurt? Perhaps the arm base is toward the front at y = -0.55 m, and reaching y = +0.05 m with the downward orientation requires extension. Lowering might improve reach if the shoulder is around z = 0.9 m, but these are hypotheses; the arms were initially raised. I could try a left target of [-0.27, 0.035, 1.02] m, with an estimated target distance of 0.097 m, and a right target of [0.10, -0.01, 1.04] m, with an estimated distance of 0.183 m, for eight steps. However, at link6 height z = 1.02 m, the estimated object bottom would be at z = 0.847 m, only 7 mm above the rim at z = 0.84 m. Moving the elephant across the rim with that little clearance risks a collision. I could maintain z = 1.05 m until y = +0.02 m, then lower once over the interior. Although the earlier target at y = +0.05 m, z = 1.08 m failed, a height of 1.05 m may be reachable. I also considered y = +0.035 m at essentially the current height of z = 1.051 m. I’ll instead attempt [-0.27, 0.03, 1.05] m for the left arm, with an estimated target distance of 0.091 m, and [0.10, -0.01, 1.06] m for the right, with an estimated distance of 0.184 m. These still need to pass the precheck. The bar’s path from x = 0.258 m to 0.10 m and y = -0.086 m to -0.01 m may cross the gap between the red and blue baskets. At link6 height z = 1.05 m, its estimated bottom would be at z = 0.877 m, which appears clear of the rims. I’ll use eight steps with both grasps maintained.

The precheck has failed again for relatively modest moves, which is puzzling. The left target displacement was about 0.09 m, with a best position error of 24 mm; the right displacement was about 0.18 m, with a best error of 31 mm. Perhaps the arms are near joint limits at their current orientations. I could change the orientations or try much closer intermediate poses, with displacements around 0.04 m. Could using the exact wxyz quaternion [0.5, -0.5, 0.5, 0.5] help if rounding the current quaternions is causing numerical trouble? The rotation errors are small, though. Another possibility is a wrist singularity, perhaps involving joint 6, where moving toward positive y requires a different joint configuration. An intermediate rotation about world z or a slight forward tilt away from the fully downward orientation might help. I need to keep the held objects stable to avoid slipping, although a small rotation may be acceptable. The downward orientation [0.707, 0, 0.707, 0] would close along world y instead of x and require a 90° roll about the vertical axis. That could change the joint configuration, but it would also rotate the held objects and introduce risk. A modest tilt about world x or y seems preferable. Before choosing a motion, I should inspect the measured joint states to better understand the kinematics and possible joint limits. I’ll read current_state from obs_000088 and compare it with the initial state and the recorded states at steps 50 and 80.

The smaller moves at a lower height worked. The elephant appears to be dangling over the left side of the white basket, not yet over its center. The purple bar appears high above the front-left of the red basket and is moving left toward the middle basket. I could target [-0.27, 0.04, 0.99] m for the left arm, perhaps within 0.1 m of its current pose, and [0.06, -0.005, 1.0] m for the right, about 0.13 m away. At a link6 height of z = 1.0 m, the estimated object bottom would be at z = 0.827 m, below the rim at z = 0.84 m; that would be acceptable once the object is over the interior. The left arm is currently at y = -0.011 m near the front rim. Moving to y = +0.04 m while lowering by 0.029 m would bring it into the interior, but would the object's bottom be at z = 0.817 m? Using the original bottom height of z = 0.75 m with link6 at z = 0.923 m gives a bottom offset of -0.173 m. At the current link6 height of z = 1.019 m, the estimated bottom is z = 0.846 m, consistent with the object appearing just above the rim. At the proposed height of z = 0.99 m, I estimate the bottom at z = 0.817 m, below the rim. Does the path from y = -0.011 m to +0.04 m cross the front rim near y = -0.03 m? The arm is already 0.017 m past the estimated front rim at y = -0.028 m, but the object may extend ±0.04 m along y and could contact the rim during descent. I should keep the link6 height at z = 1.02 m until the objects are centered, then lower them. I'll target [-0.27, 0.04, 1.02] m for the left arm and [0.08, -0.01, 1.02] m for the right, preserving both orientations and closed grasps for six control steps. The closer left target may now pass the precheck.

Perhaps the local solver is stalling near joint limits with the orientations held fixed, even for target distances of about 0.1 m. Shorter moves of about 0.05 m may be needed. The rejected left target required changes of +0.051 m in y and +0.01 m in x; the right target required -0.104 m in x and +0.034 m in y. The left arm’s best position error was about 18 mm for a target only about 0.052 m away, which is puzzling but may indicate that it is near its maximum reach. Lowering z to 1.0 m while moving might help. I have not yet tried combining a further move from the current poses with that descent; the previous successful targets used z = 1.02 m. Could joint 3 have a limit around 2.03 rad? I’ll read the measured joints from obs_000094 before choosing the next motion.

Joints 2 and 3 have been increasing. On the left, joint 2 is at 2.282 rad and joint 3 at 2.259 rad; perhaps their limits are around 2.35 rad, and reaching y = +0.04 m could require values above 2.4 rad. Would lowering z reduce those angles? Joint 4 is around -1.54 rad and appears to control wrist pitch. The left arm’s joint 5 is approximately 0 rad and joint 6 is -0.044 rad. Joint 4 at -1.544 rad, about -88°, may be near a lower limit of -π/2, approximately -1.57 rad. Reaching farther while maintaining the downward orientation might require joint 4 below -1.57 rad, explaining the precheck failures. A slight pitch change could make that joint less negative and improve reach. I am not certain how the joint angles combine to determine finger pitch. The current downward finger-forward vector is approximately (0, 0, -1), whereas initially it was horizontal at (0, 1, 0), with joint 4 at 0 rad. At observation 50, joints 2, 3, and 4 were 1.836, 1.656, and -1.391 rad. Their joint-2-plus-joint-3 sum was 3.492 rad, compared with 4.541 rad at observation 94, a difference of 1.049 rad, while joint 4 changed by only -0.153 rad. Perhaps joint 3 enters the orientation relationship with the opposite sign. Joint 2 minus joint 3 was 0.18 rad at observation 50 and 0.023 rad at observation 94; adding joint 4 gives -1.211 and -1.521 rad, respectively. The relationship is still not obvious. An alternative downward wxyz quaternion, [0.5, 0.5, 0.5, -0.5], would rotate the grasp 180° about the vertical axis. It might change the wrist configuration, though joint 4 could remain the same. The downward quaternion [0.707, 0, 0.707, 0] would rotate the gripper by a 90° roll relative to the arm and might redistribute motion through joints 5 and 6. However, yaw about the world vertical axis may only change joints 6 and 1 rather than relieve joint 4. A pitch tilt seems more likely to move joint 4 away from its suspected limit. I need to choose a tilt that preserves the grasps and avoids the basket rims. A 15° tilt could point the fingers downward and toward either -y, toward the front, or +y, toward the back. I expect the held objects can tolerate that small rotation. A positive rotation about world x maps (0, 0, -1) to (0, sin θ, -cos θ), tilting the fingers toward +y, away from the robot; a negative rotation tilts them toward -y. Since the initial fingers pointed toward +y with joint 4 at 0 rad, tilting toward +y moves toward the initial orientation and will likely make joint 4 less negative. I’ll favor a +20° world-x tilt, approximately 0.349 rad, computed as R_x(+0.35) multiplied by the current rotation. This would shift the objects’ bottoms toward +y by perhaps 0.06 m, which I must account for when placing them. With the left end effector currently at y = -0.011 m, the 0.1576 m finger length would contribute approximately +0.055 m in y, and the object center might shift about +0.045 m. The object may then be over the front rim already. To place its center at basket y = 0.05 m, the end-effector y could be around 0.0 m, making the placement easier to reach. I should rotate in clear space at the current link6 height of about z = 1.02 m before continuing the transfer. The elephant’s estimated bottom is currently at z = 0.846 m. Tilting may raise it because the finger length’s vertical projection decreases, and I expect the same for the bar, but I still need to ensure their swept paths avoid the rims and nearby objects. I could first tilt both arms 15° at their current positions, then move. My preferred tilt is 20° about world x; I’ll compute candidate orientations from both measured quaternions, including 15°, 20°, and 25°, before commanding a rotation.

I’ll use the calculated 20° tilt quaternions for both arms while holding their positions fixed. I’ll apply four control steps; the actual rotation during that action may be about 0.15 rad.

The grippers have tilted only about 9°, so their current orientations are roughly halfway to the intended 20° tilt. I could combine further translation with the remaining rotation, but it seems better to finish the tilt first to relieve the restrictive wrist configuration. I’ll hold both arms at their current positions and continue toward the same 20° orientation targets for four more control steps.

The left gripper is tilted about 17° and the right about 15°, which seems sufficient to continue transport. I could retain the current orientations or finish toward the 20° tilt targets. One option is to target [-0.27, 0.02, 1.02] m on the left and [0.08, -0.01, 1.02] m on the right, both with the 20° orientations. I estimate position changes of about 0.025 m and 0.109 m, respectively, with only small remaining rotations, so the precheck may pass. I need to account for the tilt when locating the objects over the baskets. The fingers point toward +y, placing each held object below and perhaps 0.05 m toward +y from its end effector. Using an estimated object-center offset of +0.04 m in y, a left end-effector target at y = 0 m would put the elephant center at y = 0.04 m. The previously considered end-effector target at y = 0.04 m would put the object around y = 0.09 m, still inside but close to the back rim at y = 0.124 m. For the purple bar, placing its center at the middle basket’s estimated y = 0.05 m would require end-effector y ≈ 0.01 m, compared with its current y = -0.04 m. The left end effector is already at y = -0.005 m, so the elephant center may already be around y = 0.04 m. In the high view at obs_000102, the elephant appears near pixel (180, 168), over the white basket’s opening center. Perhaps I can lower it and release without moving farther in y. With the left end effector at [-0.28, -0.005, 1.021] m and a tilt of about 17°, I estimate its finger-forward vector as [0, 0.29, -0.957]. A grasp-center offset of 0.13 m along that vector gives an elephant center near x = -0.28 m, y = 0.033 m, z = 0.897 m. If its bottom extends another 0.04 m along that direction, it would be near y = 0.045 m, z = 0.859 m. That places the center well over the basket interior, consistent with another visual estimate near pixel (179, 168). I could lower the left end effector to z = 0.96 m at unchanged x and y, putting the estimated object bottom at z = 0.798 m, below the rim and inside the basket. A later release with the bottom at z = 0.767 m might require end-effector z ≈ 0.928 m. Using the original vertical bottom offset of 0.173 m instead, the tilted vertical component is 0.957 × 0.173 ≈ 0.165 m. This gives bottom z = end-effector z - 0.165 m: about 0.856 m currently, and an end-effector target of z = 0.925 m to reach the estimated inner bottom at z = 0.76 m. Could the tilted fingers or link collide with the front or back rim? The fingers are offset along x and extend along the forward direction. At end-effector y = -0.005 m, I estimate the current fingertip center at y = 0.041 m, z = 0.87 m. At end-effector z = 0.94 m, the fingertips would be at z = 0.789 m, inside the basket at the same y = 0.041 m, with the elephant bottom around z = 0.775 m and resting. These estimates look suitable, but I should lower gradually now that it is centered. The purple bar still needs to move from current end-effector x = 0.183 m toward middle-basket x = 0 m and eventually end-effector y ≈ 0.01 m. I’ll use [0.08, 0, 1.02] m as its next intermediate target. Meanwhile, I’ll lower the left arm about 4 cm to [-0.28, -0.005, 0.98] m. I’ll keep both grippers closed, continue toward the 20° tilt orientations, and use six control steps. The right target is about 0.111 m away; with the tilt, it may now pass the precheck.

The right arm moved only about 0.06 m of the intended 0.1 m, so it still needs to continue toward the previous xy target of [0.08, 0] m. In the high-camera view, the bar appears near pixel (382, 160), perhaps over the right edge of the blue basket or the left edge of the red basket. The blue basket’s center is at image x ≈ 320. The right end effector is currently at world x = 0.121 m, and I estimate the bar’s grasp center has the same x coordinate, consistent with its projection near image x = 382. I need to bring it to world x = 0 m, with end-effector y perhaps near 0 m. The left end effector is at z = 0.982 m. I estimate the elephant’s bottom at z = 0.817 m, inside the basket but still 0.057 m above the estimated basket floor at z = 0.76 m. At the current 20° tilt, the fingertips are at approximately z = 0.982 − 0.148 = 0.834 m, slightly below the rim at z = 0.84 m and inside the basket. Lowering the left end effector about 4 cm to z = 0.94 m would put the estimated elephant bottom at z = 0.775 m. I could do that in three steps. For the right arm, I could use two transport segments, first targeting [0.04, 0, 1.02] m, about 0.083 m away, for six steps; it might reach x ≈ 0.08 m during that action. Alternatively, I could target x = 0 m and y = 0.01 m directly, an estimated distance of about 0.124 m. The preceding target at x = 0.08 m from x = 0.183 m, about 0.11 m away, passed the precheck, although the arm moved only 0.062 m after six steps. With the tilted orientation, the final target [0, 0.01, 1.02] m, about 0.125 m from the current pose, may also pass. I’ll target left end-effector z = 0.945 m and right position [0, 0.01, 1.02] m for six steps, keeping both current orientations and closed grasps. If either target fails the precheck, neither arm will move. That would be a validation rejection rather than an execution fault, so I can adjust the targets afterward.

The right target may be too far across the robot’s body; perhaps joint 1 is nearing its rotation limit. I’ll try a shorter move of about 0.06 m, from the current x = 0.121 m toward x = 0.06 m and y = -0.005 m. I’ll also lower the left arm to z = 0.945 m. I’m considering four control steps for this move.

The elephant appears to be touching the left basket floor in the high-camera view. With the left end effector at z = 0.945 m, I estimate the object’s bottom at z = 0.78 m and the inner floor perhaps at z = 0.77 m, so it may be ready to release. Before releasing, I should check its support. The elephant’s bottom is inside the white basket in the high view, and the wrist view shows the white basket bottom directly behind it. Its relative position in the wrist image has shifted slightly between obs_000108 and obs_000113: the torso top may have been near pixel y = 210 before and is now near y = 250. That suggests it settled onto the floor as the arm descended. The measured left end-effector height is exactly z = 0.945 m, and the elephant may now be in contact with the bottom. I’ll release it while holding the left arm’s pose unchanged. For the right arm, I could move from x = 0.082 m directly to x = 0 m, with target y = 0.005 m, an estimated distance of 0.084 m. A shorter move of about 0.06 m may be more likely to pass the precheck. I’ll instead target [0.02, 0, 1.02] m, about 0.064 m away, and perhaps move to x = 0 m afterward. I considered three steps for opening the left gripper; I’ll use a five-step combined action with the left gripper open at its current pose and the right gripper closed during the bar’s transfer.

Moving the right arm toward the center seems kinematically difficult with the downward or tilted gripper orientation. I could try a smaller move of about 0.03 m, adjust the orientation farther toward its initial orientation to relieve the configuration, or do both. What is the right arm’s current joint 1 angle? I’ll read the measured joint states before choosing the next motion.

The right arm’s joint 2 is at 2.38 rad and joint 3 at 2.395 rad, perhaps near limits of 2.4 rad. The tilt has made joint 4 less negative, at -1.256 rad. Reaching farther left appears to increase joint 1, currently at 0.474 rad, as well as joints 2 and 3. Would lowering the end-effector height to z = 1.0 m or 0.98 m reduce joints 2 and 3? That seems likely. Its current height is z = 1.016 m, and the rejected target was x = 0.02 m, y = 0 m, z = 1.02 m. Lowering to z = 0.98 m might make the target easier to reach, but my estimated bar-bottom height would be end-effector z minus 0.165 m, or about 0.815 m, below the blue basket’s rim at z = 0.84 m. The bar is currently over the blue basket’s right edge and moving toward its interior, so lowering while crossing could cause a rim collision. Could tilting farther toward +y raise the bottom? At a 35° tilt, the cosine is about 0.819, giving an estimated bottom height of end-effector z minus 0.142 m. At end-effector z = 1.0 m, the bottom would then be at z = 0.858 m, above the rim. More tilt would also relieve joint 4, though its effect on joints 2 and 3 is uncertain. I could rotate to 35° at the current x and y coordinates, then lower and translate. However, the bar is held near the fingertips, so more tilt might make it slip. Friction is probably sufficient; it appears secure with the reported opening command at 0.27. I can release the elephant separately while holding the right arm steady, avoiding another combined target rejection. I’ll open only the left gripper for three control steps, keep the right gripper closed at its current pose, and then address the remaining bar transfer.

The elephant has been released. In the high-camera view, it appears near pixel (199, 181), perhaps near the front-right of the left basket opening or lying on its front edge. It may be partly on the rim; whether it is fully inside remains uncertain. It also appears possibly supported on the bottom. The elephant is still close in the wrist view because I have not withdrawn the arm, so I should verify its placement after withdrawal. I’ll retract the open left gripper vertically at the same x and y coordinates. I considered raising it to z = 1.08 m while retaining the tilt, but I’ll use [-0.28, -0.005, 1.05] m with the 20° tilt. A vertical withdrawal should be clear if the open fingers are inside the basket. I can combine that withdrawal with increasing the right gripper’s tilt to 35° toward the baskets. The current right quaternion, approximately [0.582, -0.401, 0.401, 0.583] in wxyz order, already represents about a 20° tilt. I need to compute the 35° target from the original downward quaternion [0.5, -0.5, 0.5, 0.5], applying a 35° rotation about world x rather than adding 35° to the current tilted orientation. I’ll disregard the slight orientation offset from that base for this calculation. I considered raising the right arm to z = 1.03 m, but will instead hold its position and rotate only. I’m planning five control steps for the combined withdrawal and rotation; first I’ll calculate the candidate quaternions.

The elephant has been released and appears supported, so I’ll withdraw the open left gripper vertically. The right bar’s transfer has encountered repeated IK rejections; I’ll hold its position and increase its tilt toward the middle basket to try to ease the arm configuration while maintaining the grasp.

The elephant remains in the left basket, but its orientation is uncertain. In the wrist view, its carved torso appears vertical, with its head and trunk at the bottom touching the floor and its tail at the top. Could it be inverted and balancing on its head or trunk? The initial image also showed its head pointing downward in the image, so that alone is not decisive. From the high view, it may instead be lying on its side. It appears stable, and the task specifies no orientation for objects inside the baskets, so being contained and supported is acceptable. The right gripper is now tilted about 32°. I’ll move it toward x = 0 and lower it slightly, targeting [0.02, 0, 1.0] m with the 35° tilt orientation. I estimate the move at about 0.062 m, with a z change of -0.018 m. I’ll also retract the open left gripper farther, to z = 1.08 m. I hope these targets pass the precheck. Using the estimated 0.173 m offset to the bar’s bottom, its current bottom height is approximately 1.018 − 0.173 × cos(32°) = 0.871 m, above the rim. At the target end-effector height of 1.0 m, I estimate the bottom at 0.853 m, still above the rim. I’ll use six control steps.

The purple bar is now over the middle basket, so I should lower it for placement. The right link6 position is [0.026, -0.004, 0.999] m, with a 35° tilt. Using the estimated 0.173 m offset to the bar’s bottom, its bottom height is approximately 0.999 − 0.173 × cos(35°) = 0.857 m. This offset assumes its original bottom was around z = 0.75 m. A link6 height of 0.917 m would put the estimated bottom at 0.775 m. At that height, the fingertips would be at approximately 0.917 − 0.1576 × cos(35°) = 0.788 m, inside the basket. I estimate the bar’s center y coordinate as end-effector y + 0.13 × sin(35°) = 0.071 m. That puts it in the back half of the basket, whose back rim is near y = 0.124 m. Is the bar’s long axis along a local direction that gives it more reach toward the rim? It may extend about 0.05 m along y and approach the back rim near y = 0.12 m, although it seems acceptable. In the high view, the bar appears near pixel (337, 150), toward the back of the blue basket rather than its center. I could move the right end effector to y = -0.03 m to put the estimated bar center near y = 0.045 m; its current y = -0.004 m puts the center near 0.07 m. I’ll consider a target of [0, -0.03, 0.925] m, moving toward the front and down 0.074 m over five control steps. Moving in negative y should help avoid the back rim during lowering. I estimate the horizontal displacement at 0.038 m and the vertical displacement at 0.074 m, for a total distance of 0.083 m, within the command limit. The tilted orientation will likely pass the precheck. Should I hold the left arm or begin approaching another wooden toy while the right places the bar? The left arm is retracted at [-0.28, -0.01, 1.065] m with its gripper open. The next small toys might be near [-0.37, -0.2] m or [-0.45, -0.25] m in xy, but I need better position estimates. I could approach one while placing the bar, moving the left arm toward negative y and perhaps rotating back toward a downward grasp. One tentative approach pose is [-0.34, -0.22, 1.03] m with the 20° tilted downward orientation, but I should localize the toy first. The two small toys appear at high-camera pixels (155, 270) and (110, 292). I’ll unproject those pixels onto an estimated z = 0.78 m plane using the calibration from obs_000128 and the correct ray-plane formula. The left wrist currently views the basket rather than the toys; I am uncertain about its viewing direction, but moving it may bring the front toys into view. Before choosing the next motion, I’ll calculate estimated centers for the remaining wooden toys, peppers, and chocolate bars from the high-camera view.

The position estimates now give me a useful map of the scene. In environment-frame xy coordinates, the wooden toys are the elephant near [-0.29, -0.11] m, the farther small toy near [-0.329, -0.174] m, and the nearer small toy near [-0.402, -0.22] m. The peppers are the left red pepper near [-0.122, -0.212] m, the yellow pepper near [0, -0.214] m, and the right red pepper near [0.244, -0.175] m. The remaining chocolate bars are near [-0.062, -0.08] m and [0.089, -0.117] m. I am counting the purple bar as placed, although I still need to lower and release it. The estimated basket centers are [-0.277, 0.05] m, [0, 0.05] m, and [0.277, 0.05] m. That should leave seven objects from the nine total: two wooden toys, two chocolate bars, and three peppers. With 972 control steps remaining, roughly 120 steps per object would use about 840 steps. I can use both arms together, with the left handling the wooden toys and left chocolate bar, perhaps also some peppers, and the right handling the right pepper, middle chocolate bar, and yellow pepper. The roughly 35° transport tilt has helped with reach. For future grasps, I should rotate downward, perform the grasp and lift, then tilt toward the basket. I may use the 35° tilt throughout transport and adjust the end-effector placement coordinates for the resulting object offset. Next, the left arm can approach the farther small wooden toy at [-0.329, -0.174] m. After placing the purple bar, the right arm could grasp either the middle chocolate bar at [0.089, -0.117] m or the right red pepper at [0.244, -0.175] m. To avoid crossing paths, I favor the right red pepper next while the left handles the small toy. The middle bar also looks easy for the right arm to handle afterward. For the immediate action, I’ll lower the purple bar carefully using the right link6 target [0, -0.03, 0.925] m with the 35° tilt and the gripper closed. For the left approach, I considered retaining a 20° or 35° tilt, but I’ll use the downward wxyz quaternion [0.5, -0.5, 0.5, 0.5] with the gripper open, targeting [-0.329, -0.174, 1.02] m above the toy. From the current left pose [-0.28, -0.01, 1.065] m, I estimate the target distance at 0.19 m, within the 0.25 m limit, and the orientation change at 0.61 rad, within the 1.0 rad limit. The left fingers are currently at an estimated z = 0.917 m and y = 0.044 m with the 20° tilt, about 0.077 m above the white basket rim at z = 0.84 m. I judge that sufficient clearance to move toward the front and rotate downward while leaving the basket. Both targets seem likely to pass the precheck. I’ll use eight control steps for the combined left approach and right lowering motion.

The left arm moved only partway during the eight-step action. It is now at [-0.302, -0.081, 1.047] m and is not yet above the small wooden toy. The right end-effector height is z = 0.93 m, nearly at its target of 0.925 m. Is the purple bar already lying in the blue middle basket? It is not visible in the high-camera view, apparently because the gripper occludes it. The right wrist view still shows it between the fingers with the blue basket floor behind it. It may be at the floor and ready for release. Using the estimated vertical offset of 0.173 × cos(35°) ≈ 0.142 m, its bottom would be at z = 0.788 m. The inner basket floor may be at z = 0.77 m, leaving an estimated 18 mm drop, which I judge safe. I still need to ensure it is fully contained. In the wrist image, the bar’s bottom is near pixel y = 380 with basket floor around it, so the placement looks likely to be adequate. I’ll open the right gripper while holding its current pose and continue the open left gripper toward [-0.329, -0.174, 1.02] m with the downward orientation. I initially considered another eight steps; perhaps six would move the left arm the remaining roughly 0.1 m close to its target while the right gripper opens. I’ll verify the bar’s placement after release.

The released purple bar is lying flat and fully inside the blue middle basket. The two wooden toys in the left wrist view look like small lions. I’ll grasp the farther one, on the right in the wrist view, at high-camera pixel (155, 270), with estimated world xy coordinates [-0.329, -0.174] m. The left arm’s measured position is [-0.317, -0.13, 1.034] m, close to its hover target of [-0.329, -0.174, 1.02] m. For the right arm, I considered retracting toward [0.10, -0.08, 1.08] m or moving directly above the right red pepper at [0.244, -0.175, 1.03] m with a downward orientation. However, it is currently at [0, -0.026, 0.93] m with a 35° tilt and open fingers inside the blue basket. I estimate the direct pepper target is 0.28 m away, exceeding the 0.25 m limit. Moving horizontally now would also cross the blue and red basket rims with the fingertips at approximately z = 0.801 m, below the rims, causing a collision. I’ll first lift the right arm vertically to [0, -0.026, 1.08] m, then move horizontally. I considered retaining the 35° tilt or rotating downward during withdrawal; I’ll retain the tilt. Meanwhile, the left arm will finish moving to [-0.329, -0.174, 1.02] m with its downward orientation and open gripper. I considered five steps for the left alignment and seven for the right withdrawal; I’ll use seven steps for the combined action.

The right arm’s vertical lift at a 35° tilt failed the precheck, perhaps because of its wrist configuration. Its joints, including joint 2, likely changed during placement. I could try a downward orientation or reduce the tilt to 20° while lifting. The current right height is z = 0.93 m, and the rejected target was z = 1.08 m, a 0.15 m lift, with a best position error of about 26 mm. I could use an intermediate height of 1.05 m, a 0.12 m lift, or try 1.04 m, a 0.11 m lift. For the latter, I could reduce the tilt from 35° to 20°, rotating 15° toward downward by about 0.26 rad, or retain the 35° tilt. The left target passed, but neither arm moved because the right target failed. I’ll keep the left alignment target and choose a shorter right lift to [0, -0.026, 1.03] m, retaining its current 35° orientation with wxyz quaternion [0.627, -0.327, 0.327, 0.627]. I’ll keep both grippers open and use six control steps.

The left arm is aligned above the farther small lion toy. The right arm has retracted to z = 0.998 m. With its 35° tilt, I estimate the fingertip height as 0.998 − 0.129 = 0.869 m, about 29 mm above the basket rim at z = 0.84 m. That appears sufficient for horizontal motion toward the right red pepper. A possible downward-oriented hover target is [0.244, -0.175, 1.04] m, requiring about 0.61 rad of rotation from the 35° tilt. I estimate the direct target distance at 0.28 m, exceeding the 0.25 m limit, so I could use [0.14, -0.10, 1.04] m as an intermediate target, about 0.157 m away, while the left arm descends for its grasp. I need to clarify the small lion’s grasp geometry. The farther toy is on the right in the left wrist view, centered near image x = 350. At first it looks upright, with a round yellow head at the top and a brown mane below, but I may be interpreting its anatomy incorrectly: the circular mane seems to be near the bottom and the body above it. In the high view, it appears horizontal near pixel (155, 270). The wrist view shows it extending roughly from y = 90 to 250, with the mane around y = 180–245 and the yellow body around y = 90–180. The visible top surfaces suggest that both lion toys are lying flat on the table, with their axes along world y. I could grasp near the body center at pixel (344, 165), or across the head, but the narrower torso seems preferable. The high-view estimate of world xy = [-0.329, -0.174] m came from the whole-object center at pixel (155, 270), which may actually correspond to the body or mane center. I should refine the grasp point using the current wrist calibration and an assumed height near z = 0.78 m. The left end effector is currently at [-0.329, -0.173, 1.02] m with the fingers pointing downward. The toy spans approximately image x = 279–420 and y = 88–250, with an estimated center at (350, 169). A point at the same world xy as the end effector and z = 0.78 m would be 0.24 m below it. Earlier, the bar at z = 0.75 m with end-effector z = 1.02 m projected near image v = 130; at z = 0.78 m, the projection might be near v = 173. The toy center’s y coordinate may therefore be close to the current alignment. Its 30-pixel horizontal offset from x = 320 might correspond to a world-x correction of about +0.018 m, but I should unproject it rather than rely on that estimate. Possible contact points include the yellow torso just above the mane at (343, 162), assuming z = 0.785 m, and the mane center at (351, 208) at the same assumed height. I estimate the maximum gripper gap at about 0.1 m, the mane width at about 0.06 m, and the torso width at about 0.04 m. Grasping across world x at torso pixel (340, 145) may be stable, although the center of mass could be nearer the head and mane. A neck grasp near the mane might also work if the round head is relatively heavy. Gripping across the brown circular mane is another option; its width may be about 0.065 m, within the gap. In the high view, the toy’s width looks closer to 0.04 m, so these shape estimates remain uncertain. I favor the torso center for the grasp. Before moving, I’ll unproject candidate wrist pixels at estimated object heights near z = 0.78 m and compare their world positions with the measured end-effector position.

The left end effector is at x = -0.329 m, but the toy center at wrist-image x = 350 projects to world x ≈ -0.316 m. My high-camera plane estimate of x = -0.329 m was off, perhaps because I selected pixel x = 155 while the actual object center is nearer x = 160. I trust the wrist estimate more. I estimate the torso grasp point at xy = [-0.321, -0.168] m at z = 0.79 m, and the mane center near [-0.316, -0.195] m. The whole toy appears to span world y = -0.13 to -0.21 m. The torso point seems suitable; the current end-effector y = -0.173 m is close, while x needs a correction of about +0.008 m. I could use x = -0.320 m, y = -0.175 m. An eventual grasp height of z = 0.92 m seems appropriate: I estimate the toy thickness at about 0.03 m, its top at z = 0.79 m, and its bottom at z = 0.75 m, with the fingertips at z ≈ 0.762 m when link6 is at z = 0.92 m. I could first align at [-0.320, -0.172, 1.02] m and then descend, or combine the correction with a short descent toward z = 0.95 m. From the current z = 1.02 m, that target requests a 0.07 m descent and a +0.009 m x correction. Based on recent motion, three steps may lower the arm by about 0.034 m to z = 0.986 m rather than reaching the target. For the right arm, I’ll use the intermediate pose [0.14, -0.10, 1.04] m with a downward orientation. I considered eight steps for that navigation and three for the left approach, but the tool applies the same step count to both arms. Eight steps could bring the left arm to z = 0.95 m too quickly and would exceed the short-action requirement for the final approach. I’ll therefore use three steps, targeting the left arm at [-0.320, -0.172, 0.95] m and the right at its intermediate pose, with both grippers open and the downward wxyz quaternion [0.5, -0.5, 0.5, 0.5]. The right arm will likely move only partway. I’ll inspect the next observation before continuing.

The right gripper has rotated only partway toward downward, and its translation is progressing slowly. I’ll repeat the same targets. I considered six steps for the right arm, but both arms use the same step count, so I’ll use three steps to keep the left descent short while allowing the right arm to continue moving. The left target remains [-0.320, -0.172, 0.95] m, and the right target remains [0.14, -0.10, 1.04] m. Both grippers will stay open with the downward target orientation.

The left end effector is at z = 0.955 m, with the fingertips at z = 0.7974 m. The toy’s top may be around z = 0.80 m, so the fingers appear just above it. I’ll descend toward z = 0.92 m, putting the fingertips near z = 0.762 m, using three control steps. In the left wrist view, the mane is centered around pixel (330, 300), while the torso is near image y = 180. The end effector is at x = -0.321 m, y = -0.172 m, and the torso grasp point may also be at world y = -0.172 m, so the alignment looks correct. The torso lies between the open fingers at the left and right edges of the view. During the same three-step action, the right arm will continue toward its target of [0.14, -0.10, 1.04] m.

The left end effector is at the grasp height of z = 0.923 m. The toy’s body fills the bottom of the wrist view, with its torso perhaps spanning image x = 230–420. The open fingers are near image x = 100 and 540, so the gap looks sufficient. I’ll close the left gripper while holding its pose steady for three control steps. The right end effector is currently at [0.082, -0.071, 1.022] m, with its orientation nearly downward. I could continue toward the intermediate target [0.14, -0.10, 1.04] m, which is only about 0.068 m away. Instead, I’ll target the right red pepper’s hover pose directly at [0.244, -0.175, 1.02] m with the downward orientation. I estimate that distance at 0.196 m, within the 0.25 m command limit, and expect the precheck will likely pass. I’ll keep the right gripper open and use three control steps for the combined action.

The left fingers have closed against the small wooden toy’s torso, so I should test the grasp with a short lift. I’ll raise the left end-effector target to z = 0.973 m while keeping its orientation steady and its gripper closed. The right arm is still far from the pepper’s hover pose, so I’ll continue toward its target of [0.244, -0.175, 1.02] m with the gripper open. I’ll use three control steps for both arms.

The farther small wooden toy appears near pixel (150, 261) in the high-camera view, compared with its original position near (155, 270), so it moved upward with the left gripper during the test lift. Its position relative to the wrist camera remains the same, supporting that it is held. The right arm is still at x = 0.13 m, with the pepper visible at the right edge of the view. I’ll raise the left arm to [-0.32, -0.173, 1.06] m and tilt the held toy 35° toward the left basket for transport. The requested position change is 0.105 m, and the orientation change is approximately 0.61 rad, within the command limits. I judge the vertical lift clear of the other nearby toy. The right arm will continue toward its existing hover target above the right pepper. I’ll use six control steps; the right arm may move about 0.05 m during that action, while the left arm progresses toward the 35° tilt.

The right arm has not yet reached x = 0.244 m; its measured x is 0.178 m. The pepper’s center appears near pixel (480, 260) in the wrist view. Reaching the existing target requires changes of +0.066 m in x and -0.045 m in y. The held wooden toy initially appears near the white basket’s left edge, even though the left end effector is still at y = -0.174 m. Could that be due to the tilt and camera perspective? More specifically, it appears near high-camera pixel (118, 195), left of the basket rather than over it, so I should transport it farther. The current left end-effector position is [-0.32, -0.174, 1.057] m, with an estimated tilt of 29° and a quaternion w component near 0.61. I’m considering a left target of [-0.28, -0.03, 1.02] m with a 35° tilt. I estimate the target distance at 0.155 m, within the command limit. With that tilt, I estimate the object center’s y offset at +0.08 m, so end-effector y = -0.03 m would put the object center at y = 0.05 m. The path crosses the front rim. Using the estimated 0.173 m bottom offset, the current object-bottom height is 1.057 − 0.173 × cos(29°) ≈ 0.906 m, above the rim at z = 0.84 m. At the proposed end-effector height of 1.02 m, I estimate the bottom at z = 0.878 m, still clear. The right target remains [0.244, -0.175, 1.02] m with the downward orientation and open gripper; the left gripper will remain closed. Six control steps may bring both arms near their targets. Will the left target pass the precheck? Its orientation is already nearly at the intended 35° tilt, but moving toward the basket at z = 1.02 m could encounter joint 2 or joint 3 limits, although the tilt should help. I could use a smaller move to y = -0.06 m, or consider [-0.29, -0.04, 1.03] m as an intermediate left target, with an estimated displacement of 0.143 m. The right displacement is about 0.079 m. I’ll try six steps.

The right pepper appears centered near wrist-image pixel (342, 175), with the right end effector at z = 1.021 m and xy = [0.237, -0.17] m. The pepper’s center may be near [0.244, -0.175] m, so image x = 342 suggests an x correction of about +0.007 m. I estimate the green stem at pixel (344, 185) and the body center at (342, 178). I’ll use the current wrist calibration to unproject the center at assumed heights of z = 0.79 or 0.80 m before choosing a precise correction. I could align the right arm near x = 0.242 m, y = -0.176 m and descend toward z = 0.94 m. The pepper is approximately 0.065 m tall, with its top near z = 0.82 m and center near z = 0.785 m. For this larger, rounded object, I want to close across world x at the equator, with the fingers reaching down alongside it toward z = 0.75 m. I considered an end-effector grasp height of z = 0.91 m, but the right arm could not descend below about z = 0.923 m during the earlier bar grasp, possibly because of the table or fingers. At z = 0.923 m, the fingertips would be near z = 0.765 m, which seems suitable for a pepper with its bottom near z = 0.75 m and top near z = 0.82 m; the pads would surround the body around z = 0.78–0.85 m. I’ll use z = 0.925 m as the intended grasp height. The descent from z = 1.021 m to 0.925 m is 0.096 m and should take several three-step actions. First, I’ll correct the alignment and descend toward z = 0.96 m for three steps. The left arm is still at y = -0.112 m and needs to continue transporting the held toy toward [-0.28, -0.03, 1.03] m. I’ll use three steps for the combined motion, but first I’ll calculate the right pepper’s position more precisely.

The pepper’s estimated center is at x = 0.245 m, y = -0.175 m. I’ll align the right arm to those coordinates and descend toward z = 0.96 m. I’ll keep the left arm’s existing target of [-0.28, -0.03, 1.03] m to continue moving the held wooden toy over the left basket. I’ll use three control steps.

The held wooden toy appears near high-camera pixel (160, 155), over the left edge of the left basket. The left end effector is currently at x = -0.292 m, y = -0.078 m and still needs to move toward x = -0.28 m, y = -0.03 m. I’ll continue its transport for three control steps with the same target. The right pepper’s center now appears near wrist-image pixel (330, 215), so the alignment looks good. The right end-effector height is z = 0.988 m, and the intended grasp height is z = 0.925 m. Another three steps should bring it toward z = 0.95 m before it continues to z = 0.925 m. I’ll command the final z = 0.925 m target now and inspect after the short action.

The held small toy is now over the front-left of the left basket. I could lower and release it, but the elephant occupies the middle, so I should choose a placement that avoids collision or stacking. In the high-camera view, the held toy appears near pixel (170, 145) and the elephant near (198, 181), separated by roughly 50 pixels. At the previous left target of x = -0.28 m, y = -0.03 m, the small toy’s center might be at x = -0.28 m, y = +0.05 m. I initially estimated the elephant’s center at x = -0.24 m, y = +0.05 m, interpreting the horizontal image separation as about 0.05 m in world x. I considered placing the small toy at x = -0.31 m, y = 0 m, or keeping it farther left at x = -0.32 m, y = -0.035 m. Moving from the current end-effector x = -0.284 m toward -0.28 m would move rightward in the image and might bring it closer to the elephant. The estimated basket center is x = -0.277 m, with an interior extending approximately from x = -0.40 m to -0.15 m. However, the elephant was placed with end-effector x = -0.28 m and a 20° tilt, closing along world x, so its center should also be near x = -0.28 m rather than my tentative estimate of -0.25 m. The small toy’s current end-effector x = -0.284 m is almost the same. Their apparent horizontal separation may come from perspective and their different heights: the elephant appears around (198, 180), while the elevated toy appears around (169, 145). For the same negative world x, a smaller camera depth at greater height would project farther left. Thus, lowering the toy at the same xy coordinates could put it directly onto the elephant. Their estimated y positions are also similar. For the elephant, the placement end-effector y = -0.005 m and 20° tilt give a grasp-center estimate of y = -0.005 + 0.13 × sin(20°) = 0.039 m, with the body extending beyond that point. For the small toy, the current end-effector y = -0.045 m and 35° tilt give y = -0.045 + 0.13 × 0.574 = 0.030 m. These estimates suggest overlap, so I should deliberately offset the small toy. I considered x = -0.34 m or y = -0.02 m. The container is about 0.25 m wide and might accommodate the toys side by side with an x offset of 0.09 m. The small toy’s estimated width is 0.06 m and the elephant’s is 0.07 m. A small-toy center at x = -0.35 m would be 0.07 m from the elephant at -0.28 m, perhaps enough; x = -0.36 m would give 0.08 m separation but approach the left wall. I estimate the left inner edge near x = -0.38 m. The triangulated front corners were x = -0.401 m and -0.141 m; allowing 0.015 m wall thickness gives an inner left edge near -0.385 m. With a small-toy half-width of 0.04 m, a center at -0.34 m would extend left to -0.38 m. Its 0.06 m separation from the elephant might allow slight overlap, although an elephant body width of 0.05 m and toy width of 0.06 m would give a combined half-width of 0.055 m. Placing the toy in front is less promising: toy y = -0.015 m versus elephant y = 0.04 m gives only 0.055 m separation, while their estimated lengths along y are 0.09 m and 0.08 m. I favor the side-by-side placement at x = -0.35 m. I’ll first move the left end effector to [-0.35, -0.03, 1.03] m, maintaining the 35° tilt and closed grasp, then lower it. This requests about 0.066 m leftward motion from the current pose [-0.284, -0.045, 1.031] m, within the command bound. For later lowering, z = 0.94 m would put the estimated object bottom at 0.94 - 0.142 = 0.798 m, about 28 mm above the estimated floor at z = 0.77 m. Releasing at end-effector z = 0.925 m would put the bottom near 0.783 m. The original bottom estimate of z = 0.75 m and grasp link6 height of 0.923 m give a 0.173 m offset, whose vertical component at 35° is about 0.142 m. An end-effector height of 0.92 m would therefore put the bottom near 0.778 m and the fingertips at 0.92 - 0.129 = 0.791 m, inside the basket. That lower pose may be kinematically feasible, but I should first complete the horizontal shift. Meanwhile, the right arm can continue descending from its measured z = 0.956 m toward the pepper grasp target at z = 0.925 m. I considered three steps for that descent and four for the left shift. I’ll use four control steps for the combined action, keeping the right gripper open and its downward orientation unchanged.

The left end effector is at x = -0.348 m, close to the intended position on the basket’s left side. The elephant is visible at the right edge of the wrist view and the held small toy is toward the center-left, so the lowering path appears clear of the elephant. The right pepper’s body fills much of its wrist view, with the open fingers on either side, ready for closure. I’ll lower the left end-effector target from z = 1.03 m to z = 0.93 m while keeping its grasp closed, and close the right gripper while holding its arm pose steady. I considered three steps for the right closure and four for the left descent; I’ll use four steps for the combined action. I estimate that the left arm may descend only about 0.045 m to z ≈ 0.985 m during those steps, rather than reaching z = 0.93 m, so another descent action may be needed.

The right gripper’s opening command is 0.416, and the fingers appear to be contacting the pepper. I’ll test the grasp by lifting the right end-effector target to z = 0.975 m while continuing to lower the held left toy toward the basket floor at a target height of z = 0.93 m. I considered three or four control steps, with four for the left descent, but the grasp instructions call for only 1–3 steps during the test lift. I’ll use three steps for both arms. I estimate that the left end effector will descend from z = 0.983 m to about 0.953 m, while the right will rise from z = 0.925 m to about 0.958 m, short of their commanded targets.

The pepper moved upward with the right gripper in the high-camera view, from about pixel y = 265 to y = 258, indicating that it is held. The left end effector is at z = 0.948 m, with the small toy’s bottom estimated at z = 0.806 m. It may not yet be on the basket floor, so I may need to lower the end effector to z = 0.92 m. The wrist view shows the white basket floor behind the toy and the elephant to its right, with no apparent collision. I considered a left target height of z = 0.915 m, expecting three steps to lower it by about 0.033 m to that height, followed by release. I’ll instead target z = 0.92 m and keep the gripper closed until the toy reaches support. For the right arm, I’ll target [0.245, -0.176, 1.06] m and a 35° transport tilt. The requested position change is 0.103 m and the orientation change is about 0.61 rad. I considered five steps because the test lift is complete and this is navigation, but the left arm is in its final placement approach. I’ll use three steps for both arms, allowing the right lift and tilt to progress only partway if necessary.

The left gripper’s opening command dropped from 0.366 to 0.202 while it was still commanded closed. The toy appears to have shifted toward the center/right of the wrist view, and I am uncertain about the fingers’ apparent distance. The toy’s bottom may have contacted the basket while the arm continued descending, causing the toy to slip upward relative to the fingers or compressing the grasp. The left end-effector height is now z = 0.929 m, close to the target of z = 0.92 m. The toy is likely on the floor. Could the opening command of 0.202 reflect further closure as the object slipped? I’ll release it now. The right orientation initially looks as though it tilted backward unexpectedly. I commanded a 35° tilt, but the measured wxyz quaternion [0.558, -0.434, 0.435, 0.558] corresponds to an estimated tilt of about 13° from downward. That makes sense because it started downward and moved only partway during the three-step action. The pepper remains held. I’ll open the left gripper at its current pose and continue raising the right arm toward z = 1.06 m with the 35° tilt and its gripper closed, using five control steps.

The left gripper’s opening command is 0.638 after five steps, so it may still be opening. The small toy remains on the basket floor. The right pepper appears to be inside the red basket in the high-camera view, but it is still held at z = 1.06 m with a 35° tilt. I estimate its bottom at z ≈ 0.918 m, above the rim; its apparent position over the basket’s front-left may be due to perspective. I should transport it over the basket center before lowering it. The right end effector is currently at x = 0.245 m, y = -0.177 m. I could place this first pepper near x = 0.30 m to leave room for later peppers, or use the center/back area. The estimated basket center is x = 0.277 m, y = 0.05 m. With the 35° tilt, I estimate the grasp-center offset in y as +0.13 × 0.574 = +0.075 m, so an end-effector y of -0.025 m would put the pepper center at y = 0.05 m. A target of [0.277, -0.025, 1.04] m would put its estimated bottom at z = 0.898 m, clear of the rim, with an estimated target distance of 0.154 m. I’ll retract the open left gripper from its current height of z = 0.93 m toward z = 1.05 m, keeping approximately the same xy position. I’ll use six control steps, which should also allow its opening to finish. The right target with the 35° tilt seems likely to pass the precheck; if necessary, I could use a nearer y target of -0.05 m. For this attempt, I’ll target [0.28, -0.025, 1.04] m on the right with the gripper closed and [-0.35, -0.03, 1.05] m on the left with the gripper open, retaining the 35° target tilt for both arms.

The small wooden toy is lying flat and stable in the left basket, and the elephant is lying on its side. The right end effector is still at y = -0.101 m and needs to continue toward y = -0.025 m. The left arm has only partially retracted, reaching z = 0.992 m, so I’ll continue raising it toward z = 1.05 m. I’ll continue both arms toward their existing targets for six control steps.

The pepper is now over the center of the right basket. I estimate that its bottom was 0.173 m below the end effector in the vertical grasp; with the 35° tilt, its bottom is approximately 0.142 m below the end effector. If the basket floor is around z = 0.77 m, an end-effector height of z = 0.912 m would bring it to the floor. The pepper is about 0.07 m tall, and I should check whether that bottom offset is appropriate for the body-center grasp. Its original grasp height was z = 0.925 m with its bottom near z = 0.75 m, so the estimate seems reasonable. At end-effector z = 0.92 m with the 35° tilt, I estimate the bottom at z = 0.778 m. I’ll first lower the right end effector toward z = 0.93 m before possibly releasing the pepper. I considered five steps, but from its current z = 1.039 m, the requested descent is 0.109 m. I estimate that six steps would lower it by about 0.065 m to z = 0.974 m, so it will likely need two calls to complete the descent. The last wooden toy is near xy = [-0.402, -0.220] m. The left end effector is currently at [-0.35, -0.031, 1.049] m, with its gripper open and tilted 35°. I’ll move it above the toy at [-0.402, -0.22, 1.02] m and rotate it downward. I estimate the target distance at 0.204 m and the orientation change at 0.61 rad. The open fingertips are approximately at z = 1.049 − 0.129 = 0.92 m, above the basket rim, so moving toward the front appears safe. I considered eight steps for the left approach or seven for the combined action, but I’ll use six steps while lowering the pepper inside the right basket and keeping its gripper closed.

The right end effector is at z = 0.969 m, with the pepper’s bottom estimated at z = 0.827 m and the basket floor around z = 0.77 m. I’ll continue toward the end-effector target of z = 0.93 m, which would put the pepper’s bottom near z = 0.788 m. Three control steps will likely reach that target. I considered six steps, but the right arm is nearing contact, so I should use only 1–3 steps for the final descent. I’ll use three steps while continuing the left arm toward its existing approach target above the last wooden toy. The left arm will likely move only partway during this short action.

The right end effector is at z = 0.933 m, with the pepper’s bottom estimated at z = 0.791 m. I judge the remaining 2 cm drop to the basket floor safe, so I’ll open the right gripper while holding its arm pose steady. I’ll use five control steps and continue the open left gripper toward its existing approach target above the last wooden toy.

The released pepper is lying on its side inside the red right basket. The last wooden lion is visible in the left wrist view, centered near pixel (310, 280). The left end effector is currently at [-0.387, -0.167, 1.028] m, short of its target at [-0.402, -0.22, 1.02] m. I should refine the grasp alignment using the wrist view. The toy spans approximately image y = 210–350, with its body near (315, 230) and mane center near (315, 310). Which part should I grasp? For the previous lion, I grasped the torso with end-effector y = -0.172 m, while the mane center was near y = -0.195 m, so the body was farther away along +y and the mane nearer the front. Here, another estimate puts the body at image y = 235 and the mane at y = 310. Unprojecting the body at an assumed z = 0.79 m might give world y ≈ -0.182 m, but I should calculate that with the current calibration rather than assume it. After retracting, the right arm could handle the yellow pepper near xy = [0, -0.214] m or the middle chocolate bar near [0.089, -0.117] m. From its current xy = [0.28, -0.03] m, a move after retraction to the yellow pepper would be about 0.34 m, whereas the middle bar would be about 0.21 m away. I favor the middle bar next while the left arm handles the last toy. After placing that bar, the right arm could handle the yellow pepper, while the left could handle the left chocolate bar or left red pepper. I am counting five objects remaining after the current two, with two bars and two peppers still to sort. One possible allocation is for the right arm to do both bars and then the yellow pepper, and for the left arm to do the left red pepper after the last toy. The right arm should first retract vertically to [0.28, -0.03, 1.04] m with its 35° tilt, then approach the bar at [0.089, -0.117, 1.02] m with a downward orientation. Could I combine retraction and translation? Its open gripper is currently inside the red basket at link6 z = 0.933 m; with the 35° tilt, the fingertips are at approximately z = 0.804 m, below the rim at z = 0.84 m. I must lift clear before moving horizontally. For now, I’ll use six control steps to lift the open right gripper to [0.28, -0.03, 1.04] m while continuing the open left gripper toward [-0.402, -0.22, 1.02] m. I can calculate the left toy’s precise grasp point after reaching the hover pose.

The last wooden lion appears diagonal in the left wrist view, with its body/head region near pixel (340, 130) and its torso or mane near (355, 200). The left end effector is at x = -0.402 m, y = -0.22 m. The high-camera center at pixel (110, 292) gave an estimated world xy position of [-0.402, -0.22] m, but the object’s wrist-image x coordinate near 350 suggests its actual world x may be closer to -0.39 m. I’ll calculate the torso grasp point at pixel (345, 180), assuming z = 0.79 m, using the current left wrist calibration. The right arm has retracted only to z = 1.004 m, but I estimate its fingertips are at z = 0.875 m, giving 35 mm of clearance above the rim at z = 0.84 m. I judge that sufficient to move toward the chocolate bar while rotating downward and continuing the lift to z = 1.02 m. The proposed right hover target is [0.089, -0.117, 1.02] m with a downward orientation. Its estimated distance is 0.211 m, within the command limit, and the orientation change is about 0.61 rad. First, I’ll calculate the left toy’s grasp coordinates.

The right arm translated only about 0.02 m during the last three control steps. Rotation is taking up some of those steps, and the local motion speed toward the target may also be a factor. I’ll continue toward the same targets in short actions, keeping the left arm’s target height at z = 0.95 m. For this call, I’ll use three control steps.

The left end effector is at z = 0.956 m. In the left wrist view, the toy’s torso is near pixel (335, 230) and its mane near (350, 360), between the fingers. I’ll lower the left arm toward z = 0.923 m. The right arm is moving slowly toward the chocolate bar, perhaps because reaching across requires changes in joint 1 and the other joints, but the precheck has not failed. I considered using six control steps while the left arm descends, but I’ll use three steps instead and keep the right target unchanged. This may require several short actions, and there is still plenty of control budget.

I’ll close the left gripper now. The right end effector’s x coordinate is still 0.223 m, compared with its target of 0.089 m, and its orientation is not yet downward. Why is it moving only about 0.02 m per three control steps? I could use more steps for the right arm’s navigation, but left-gripper closure requires 1–3 steps, and the same step count applies to both arms. I’ll close the left gripper for three steps while the right arm continues its approach, then plan a three-step test lift. The right arm can continue progressing toward its target during those actions.

The right arm is still 0.115 m from its target along the x axis, so I’ll continue its approach to the chocolate bar. Meanwhile, I’ll test the left grasp by raising its end-effector target to z = 0.975 m. I’ll use three control steps for both arms.

The held wooden toy has lifted in the high-camera view and stayed in the same position relative to the wrist camera, confirming the left grasp. The right end effector is now at x = 0.184 m and is almost pointing downward, while its target x is 0.089 m. The chocolate bar is visible near the left edge of the wrist view at pixel (160, 260); moving the arm left should bring it toward the center. I’ll raise the left end effector to z = 1.06 m and tilt it 35° for transport, while continuing the right arm toward its existing hover target. The left target is 0.104 m away. I’ll use six control steps; the right arm may reach its target during this action.

The chocolate bar appears centered near pixel (320, 155) in the right wrist view, spanning approximately image x = 210–415 and y = 90–225. The right end effector is at [0.095, -0.116, 1.019] m, close to the high-camera estimate of the bar’s center at xy = [0.0886, -0.1174] m. I should grasp across the bar’s short axis. The current downward gripper closes along world x, which is horizontal in the wrist image, while the bar’s long axis runs diagonally from bottom-left to top-right. In the high view, the bar is near pixel (361, 250) and extends roughly from (345, 253) to (378, 243). That may correspond to a world direction with positive x and positive y components, but I am not yet sure. In the wrist view, I estimate the long-axis pixel differences as about +180 in x and -120 in y. If the long axis has a substantial world-x component, closing along x could require gripping across much of the approximately 0.12 m length, potentially exceeding the gripper opening. I successfully grasped the diagonal purple bar along world x earlier, perhaps because its length projected only about 0.08 m onto x. This white bar appears about 0.12 m long and 0.025 m wide, with an estimated orientation of 45° in the world xy plane and an x projection of about 0.085 m, within the estimated maximum gap of 0.10 m. Even so, aligning the closing direction perpendicular to its long axis should give a more stable grasp and require less opening. The short axis may run down-right in the wrist image. One possibility is to rotate the gripper -45° about the vertical axis so that local Y, the closing direction, aligns with the bar’s short axis. Before choosing the quaternion, I’ll calculate the bar’s long-axis direction in world coordinates. With the current downward wrist-camera pose, image x aligns with world x, while image y depends on world y and z. Using z = 0.758 m as the bar-height plane, I’ll unproject the estimated end centers at wrist pixels (385, 110), at the top-right, and (240, 200), at the bottom-left, then derive the long axis from those points.

The bar’s long axis is about +32° from world x, so its short axis is at 122°. With the downward wxyz quaternion [0.5, -0.5, 0.5, 0.5], local Y, the closing direction, points along world -x at 180°. A rotation θ about world z changes that closing angle to 180° + θ while leaving the fingers pointing downward. The ideal rotation is therefore -58°, giving a closing vector of approximately [-0.53, 0.848, 0] at 122°. I briefly questioned how this would align the pads and fingers; the relevant requirement is that the closing direction follow the short axis. The ideal orientation would be R_z(-58°) multiplied by the downward orientation, but 58° is 1.012 rad, slightly above the 1.0 rad command limit. I could use -50°, or 0.873 rad, giving a closing angle of 130°, only 8° off the short axis. Another option is to reach -58° in two stages, first -30° and then -58°. I’ll instead use -45°, which gives a closing angle of 135°, a 13° misalignment that seems acceptable, with a rotation of 0.785 rad within the limit. I’ll calculate that quaternion before moving. The wrist estimate at the assumed bar height of z = 0.758 m puts its center at x = 0.0954 m, y = -0.122 m. The current right end-effector xy position is [0.095, -0.116] m, so I’ll correct y to -0.122 m. The proposed alignment target is [0.095, -0.122, 1.02] m with the rotated orientation and the gripper open, followed by descent. At a height of 1.02 m, the open fingers could sweep near the yellow pepper at x = 0 m, y = -0.214 m, approximately 0.15 m away; I judge that clear. The fingertips are around z = 0.862 m, about 0.1 m above the bar top at z = 0.76 m, so the rotation should also clear the bar. The left end effector is at [-0.394, -0.212, 1.058] m with about a 29° transport tilt. I need to place the last toy without overlapping the two already in the left basket. I estimate the small toy is lying flat on the left at x = -0.35 m, y ≈ 0.045 m, and the elephant is near the center/right at x = -0.28 m, y ≈ 0.04 m. The right side near x = -0.20 m may be open. An end-effector target at x = -0.20 m, y = -0.03 m would put the held toy’s estimated center at y = -0.03 + 0.075 = 0.045 m. With the basket’s inner right edge near x = -0.155 m and an estimated toy half-width of 0.04 m, its right edge would be at -0.16 m and fit. The elephant’s estimated 0.04 m half-width extends to x = -0.24 m, where the last toy’s left edge would just touch it. I could choose x = -0.21 m instead. I am still uncertain about the toy’s body and mane extent in the local frame. With the tilt toward +y, its footprint along x may be about 0.07 m wide; a center at -0.20 m would then span -0.235 to -0.165 m and fit. I’ll use a final left target of [-0.21, -0.03, 1.04] m with the 35° tilt. Its distance initially looks about 0.256 m; the displacement components are [0.184, 0.182, -0.018] m, giving approximately 0.259 m, above the 0.25 m limit. I’ll first use the intermediate pose [-0.29, -0.10, 1.05] m, about 0.151 m away, then continue to the final target. I considered eight control steps, which might move the left arm about 0.08 m and rotate the right about 0.4 rad, but six steps may suffice for the combined intermediate move and right-gripper rotation. First, I’ll compute the right orientation candidates.

The bar’s estimated diagonal axis calls for rotating the right gripper so it closes across the shorter width before descending. I’ll make that alignment correction while carrying the held wooden toy toward the left basket through an intermediate hover pose.

The right gripper has rotated only partway. Its measured wxyz quaternion is [0.559, -0.433, 0.559, 0.432]; perhaps this corresponds to about -30° of rotation from the downward orientation. The bar looks closer to vertical in the wrist view and may appear more vertical when the gripper reaches the -45° target. Its current image long axis runs from (250, 210) to (380, 70), with pixel differences of +130 horizontally and -140 vertically, still roughly a 45° diagonal. Previously, those differences were +180 and -120. Could this change be due to the camera view rotating? The wrist camera rotates with the gripper’s yaw, making the object appear to rotate in the opposite direction. I’ll finish the target orientation before descending. The left end effector is now at approximately x = -0.345 m, y = -0.16 m, and the held toy appears over the white basket’s front-left area in the high view. I estimate the distance to the final hover target [-0.21, -0.03, 1.04] m at 0.181 m, within the 0.25 m command limit. The precheck may pass with the 35° transport tilt. I considered four steps to finish the right rotation while holding its height at z = 1.02 m, and six steps for the left transfer. Since both arms share the action’s step count, I’ll use six steps. The right arm may finish rotating and then remain at its alignment pose, with its gripper open, while the left carries the held toy over the open right side of the left basket.

The left end effector is still at xy = [-0.273, -0.094] m rather than its final target. The held toy appears near high-camera pixel (159, 159), over the left side of the left basket rather than the intended right side, so I should continue the transfer. The chocolate bar is now nearly vertical in the right wrist view, with its long axis running approximately from pixel (270, 220) to (360, 60). The fingers close horizontally across the view, so this looks like a usable alignment across the bar’s width. The measured right wxyz quaternion [0.611, -0.356, 0.611, 0.356] is close to the calculated quaternion [0.612, -0.353, 0.612, 0.353] for a -30° rotation about world z from the downward orientation. It appears to have reached about -30° rather than the commanded -45° after six steps. Perhaps joint 6 or a wrist yaw limit is restricting further rotation; I would need the joint states to assess that. Passing the -45° precheck did not establish that the arm reached that orientation. I could target the ideal -58° rotation now, with perhaps 0.5 rad remaining from the current orientation, or retry -45° for three steps and accept the current alignment if it does not move farther. If the wrist cannot rotate beyond -30°, the closing direction would be at 150°, compared with the bar’s short-axis angle of 122°, leaving 28° of misalignment. I estimate the bar’s extent along that closing direction as 0.1 m × sin(28°) + 0.02 m × cos(28°) ≈ 0.065 m, which should fit. The grasp seems sufficiently stable despite the diagonal contact. The bar’s center appears around pixel (315, 145), or approximately (320, 145), and the right end effector is at xy = [0.096, -0.122] m, so it looks centered. Further rotation to -45° would also rotate the camera view, though the object might remain centered. I’ll retain the current orientation and descend toward z = 0.95 m, then z = 0.923 m, rather than pursue more rotation. For this three-step action, I’ll target the open right gripper at [0.095, -0.122, 0.95] m with wxyz quaternion [0.611, -0.356, 0.611, 0.356], while continuing the closed left gripper toward its final transfer target.

The left end effector is now at x = -0.243 m, y = -0.065 m. The held toy appears near high-camera pixel (192, 154), over the center of the white left basket and perhaps above the elephant. Continuing toward x = -0.21 m, y = -0.03 m will move it rightward and back toward the empty right side of the basket. The chocolate bar remains centered in the right wrist view, near image y = 180. I’ll lower the right end effector toward z = 0.925 m while continuing the left arm toward its existing target, using three control steps.

The right end effector is at z = 0.951 m, and the bar’s center appears near image y = 220. I’ll continue toward the grasp height of z = 0.925 m for three control steps. The left arm has almost reached its placement hover target. Could I lower the left arm to z = 1.0 m while maintaining rim clearance and avoiding the elephant? The held toy’s current end-effector coordinates are x = -0.22 m, y = -0.042 m, and I estimate the toy’s center at x = -0.22 m, y = +0.033 m. The elephant is near x = -0.28 m, giving 0.06 m of separation along x. I estimate both objects’ widths at 0.07 m, so they may touch. Could the basket accommodate stacking? I still prefer placing the toy on the right side at x = -0.21 m, which is close to the current position. At the final end-effector xy target of [-0.21, -0.03] m, I estimate the toy’s center at y = +0.045 m and judge it separated from the elephant. I could target a left height of z = 0.95 m over six steps, but the right arm’s final grasp approach calls for three steps. I’ll use three steps with the left target at z = 0.98 m, a requested descent of 0.059 m, and the right target at z = 0.925 m. I expect the left arm to descend about 0.033 m to z = 1.006 m and reach its final x and y coordinates, then need another lowering action.

The right gripper is at the bar’s grasp height of z = 0.926 m. The bar appears centered, with its long axis vertical in the wrist view, so I’m ready to close around it. Could the held left toy collide with the elephant if I lower it at x = -0.21 m? In the high view, the toy appears near pixel (219, 148) and the elephant near (203, 180), with little separation. The current left target is x = -0.21 m, y = -0.03 m, giving an estimated toy-center y of +0.045 m. The elephant’s center may be near x = -0.28 m, y = +0.04 m, so their x separation is about 0.07 m and their widths might just fit. In the wrist view, the elephant’s patterned back appears left of the toy near pixel (210, 420), while the toy is centered near image x = 320. Is the elephant under the left finger, or already near contact? Lowering could push it if their footprints overlap. I could shift the toy farther right to x = -0.19 m. With an estimated basket inner-right edge at x = -0.15 m and toy half-width of 0.04 m, -0.19 m is the limiting center position. From the measured left x = -0.213 m, that would be a +0.023 m shift. I expect roughly 10 pixels of rightward motion in the high view, moving the toy from image x = 219 toward 229 while the elephant remains near 203. A target of [-0.19, -0.03, 1.0] m would keep approximately the same height before lowering, although the toy’s right edge might touch the inner wall; resting against it could be acceptable. Using a toy-width estimate of 0.06 m instead gives a right edge near -0.16 m, which seems safe. I’ll choose x = -0.195 m. I considered combining the shift with lowering to z = 0.96 m after closing the right gripper, but I’ll first shift the left arm to [-0.195, -0.03, 1.0] m while keeping its gripper closed. During the same three control steps, I’ll hold the right arm at its current grasp pose and close its gripper. Then I can lower the toy.

The right fingers are contacting either side of the chocolate bar around its lower-middle section, which looks suitable for a grasp. I’ll test it with a short lift, targeting a right end-effector height of z = 0.976 m. At the same time, I’ll lower the left end effector toward z = 0.93 m to bring the last wooden toy toward the basket floor. I’ll use three control steps for both arms; I expect the left arm to descend about 0.035 m to z = 0.965 m rather than reach its target immediately.

The right opening command is 0.0 and the fingers appear fully closed, but did the bar remain on the table? In the high-camera view, it still appears near pixel (361, 250), with the gripper nearby. In the current right wrist view, I estimate the bar’s top at (420, 160), its bottom at (240, 320), and the point where the fingers meet at (320, 255). The bar seems to be behind the fingers rather than between the pads. Perhaps the fingers closed beside or in front of it, on its near side. The end effector rose 0.037 m during the test lift, but the bar appears to have stayed at the same high-camera pixel location. This initially suggests a failed grasp, which would require reopening and correcting the alignment. The bar’s wrist-image center at closure may have been around (320, 250), but rotating the closing direction may have left it incorrectly positioned along local X, the finger-length direction. In the current wrist view, the fingertips meet near image y = 255, while the bar spans roughly y = 150–320 and may have its centerline near x = 320. Does it straddle the fingertip contact point? I should not conclude failure solely from the opening command of 0.0. Could a sufficiently thin bar still be held with that command, perhaps compressed between the fingers? The earlier purple bar retained an opening command of about 0.27 at contact, but this white bar might present a thinner dimension in this grasp. I need to check whether the bar actually moved during the lift. In the high-camera view at obs_000278, I estimate its endpoints at (347, 253) and (377, 242); at obs_000281, they appear near (348, 254) and (378, 243), essentially unchanged. I would expect the 0.037 m end-effector lift to move a held bar upward by roughly 5 pixels, although its orientation and perspective might complicate that comparison. My wrist-image estimates are less consistent: at obs_000278, I initially recall the top near (460, 80) and bottom near (220, 420), or perhaps more precisely (445, 75) and (210, 415). At obs_000281, they may be near (470, 160) and (220, 320). Is that a substantial downward shift relative to the wrist camera? I’ll generate side-by-side high-camera crops and right wrist views from both observations to inspect the change before attempting transport or deciding how to regrasp.

I’ll inspect the side-by-side high-camera and right-wrist views from before and after the test lift to determine whether the chocolate bar moved with the right gripper. The grasp remains uncertain, so this comparison will help decide whether it is ready for transport or needs regrasping.

The left gripper’s opening command increased to 0.468 despite being commanded closed. The toy likely slipped or rotated during contact with the basket, forcing the fingers apart. It may be resting on the floor while the arm pushes against it. Should I wait until the arm reaches the target height of z = 0.93 m before releasing? Its measured height is still z = 0.945 m, possibly because contact prevented further descent, and the toy appears to be at the floor. The changed opening command suggests that the toy moved between the fingers, perhaps because it is squeezed against the basket wall. It is near the right wall, which appears on the right of the wrist view. I may have placed it too far right, causing it to press against the wall. I should avoid forcing it farther down. I’ll release the left toy at the current height of z = 0.945 m, where it is likely supported by the floor or wall. The right end effector is at z = 0.927 m, with an opening command of 0.837. I’ll continue opening that gripper and lower its target to z = 0.910 m for the bar regrasp. I’ll use three control steps, holding the left arm at its current pose with its gripper commanded open.

The bar’s center in the high-camera image may be near pixel (365, 250), rather than x = 370. I’ll inspect a crop of the current high-camera image to check its pixel coordinates. I’ll crop the region from (330, 225) to (395, 275) and enlarge it 10× using nearest-neighbor resizing.

I’ll inspect the enlarged high-camera crop to refine the chocolate bar’s center and compare it with the wrist-based position estimates before the second grasp.

In the 10× crop, I initially estimate the bar’s bottom-left red corner at crop pixel (150, 300), corresponding to original pixel (345, 255), and its top-right corner at (550, 150), corresponding to (385, 240). That gives a center near (365, 247.5). A more precise estimate places the white top-right end at crop pixel (545, 160), or original pixel (384.5, 241), and the bottom red end center at (180, 330), or (348, 258). Their midpoint is (366.25, 249.5), so I estimate the current high-camera center as (366, 250). At an assumed height of z = 0.765 m, wrist pixel (380, 260) projects to high-camera pixel (367.8, 250.4), which is a good match. I therefore estimate the bar center at wrist pixel (380, 260), with world coordinates [0.1018, -0.1221, 0.765] m. The current right end-effector position is [0.093, -0.123, 0.924] m, giving an approximate x error of -0.009 m: the gripper is about 9 mm left of the bar, while y is already close. I should shift its x coordinate by +0.009 m to 0.102 m. A bar-top height of z = 0.765 m, rather than 0.773 m, matches the high view. Perhaps the tabletop is at z = 0.758 m. That would put the white bar’s top at 0.765 m and perhaps the purple bar’s top near 0.77 m. I initially take the fingertip height of about 0.766 m as consistent with table contact, but it is still 8 mm above the proposed tabletop. Why would descent be blocked there? Perhaps a lower finger bevel extends farther, although the supplied farthest forward extent is 0.1576 m. Could rubber pads extend beyond local x = 0.1576 m? The cause remains uncertain. The bar center is at wrist pixel (380, 260), compared with the fingertip midpoint at (320, 275). A correction of +0.009 m in x and +0.001 m in y should move the bar’s image roughly 60 pixels left, toward x = 320. The open right finger appears near (470, 260), so the bar may already be between the fingers but off the gripper axis. I’ll align the open right gripper at [0.102, -0.122, 0.924] m, retaining its current orientation and the lowest achieved height, then close afterward. The left gripper is open in the basket and needs to withdraw to z = 1.05 m. I considered two steps for the small alignment correction; I’ll use three steps for the combined alignment and withdrawal.

I’m initially unsure whether the bar’s center is still around image x = 375 or 380 after the correction. In the current right wrist view, I estimate its top at pixel (470, 130) and its bottom at (210, 420), giving a midpoint near (340, 275). The open fingertip positions are approximately (120, 260) and (520, 260), with their horizontal midpoint at x = 320. The bar’s estimated center at (340, 275) looks close enough to that contact region to attempt closure. I’ll close the right gripper for three control steps while holding its arm pose steady. During the same action, I’ll keep the left gripper open and continue retracting the left arm toward z = 1.05 m.

The right gripper’s opening command is 0.315 rather than zero, which is promising. I’ll test the chocolate-bar grasp with a short lift to a right end-effector target height of z = 0.964 m, while continuing to retract the open left gripper toward z = 1.05 m. I’ll use three control steps for both arms.

The right opening command again reached 0 after the lift, and the bar’s position in the high-camera view is unchanged, so the second grasp also missed. The command was 0.315 immediately after three closure steps and reached 0 after three more steps during the lift. That may simply reflect continued command interpolation without object contact. The first attempt likewise reported 0.329 after three steps and then 0 after the lift. A nonzero command after three steps was therefore not evidence of contact. For the other objects, the command stayed around 0.36 after six steps, which suggested contact. Here, the bar may be too low or outside the space between the pads. I need a better strategy for these thin bars. The purple bar was successfully grasped with a downward orientation, no yaw adjustment, and an end-effector height of z = 0.923 m. This white bar failed with about -30° of yaw and its long axis appearing vertical in the wrist view. Could the closing direction cease to project horizontally when yaw changes? The wrist camera is fixed to the gripper, and the fingers still appear on the left and right, so closing across the apparent width should work. Perhaps the fingers closed above the bar because the end-effector height was too high. The expected fingertip midpoint is near pixel (320, 275), while the bar now appears to run along image x = 320 near y = 250. It may be horizontally aligned but below the contact region. I should lower below z = 0.924 m, yet previous descent attempts stopped around that height. Was that caused by table contact? If the open fingers are already touching the table, further lowering would not help. An angled approach might allow an edge grasp or let a finger slide under the bar, but the finger extent is fixed and the table height remains uncertain. For an object about 0.01 m high, distal pads might grasp an edge with the tips at the table. Even tips at table height plus 0.008 m might catch its top, unless the bar is too far along local X relative to the fingertips. I should check the projected contact region. With the exact downward orientation, the fingertip midpoint projects to approximately (320, 275), and it should remain there with -30° yaw because the camera is fixed locally to the gripper. The earlier calculated projection was (320, 274.7). Even with the current slight orientation variation, that local relationship should be unchanged. In obs_000296, however, I visually estimate the meeting fingers near (320, 255), or perhaps (320, 257). My visual estimate may be off. The bar appears to span that point, so the projection alone does not explain the miss. Could the table be high enough that the bar lies below the pads at the minimum achieved end-effector height of z = 0.924 m? I could try a tilted grasp. A 10° pitch about the closing axis, local Y in the table plane, would tilt the fingers in a vertical plane. It would leave both fingertips at the same height because the closing axis remains unchanged. Their vertical extent would become 0.1576 × cos θ m, making them higher at a fixed end-effector height. The changed orientation might permit lowering the end effector toward z = 0.90 m if a joint configuration, rather than table contact, caused the restriction. If table contact caused it, this would not improve the contact geometry. The right arm also stopped around z = 0.923 m for the purple bar, but that grasp succeeded. If the white bar needs z = 0.90 m, tilted fingers could put the tips at approximately 0.90 − 0.155 = 0.745 m, below an assumed table height of 0.758 m and therefore in collision. Choosing end-effector z = 0.915 m would put the tips around z = 0.76 m, essentially the same situation as before. A horizontal side grasp may be more promising. With local X horizontal, the fingertips would be at the end-effector height, perhaps z = 0.78 m. Closing vertically, with local Y along world z, would put one finger above and one below the bar, but the lower finger would hit the table. Instead, I could keep the fingers horizontal around z = 0.77 m and close horizontally across the width. The vertical pads, perhaps spanning 0.03 m, could contact the bar’s sides near the table. The initial wxyz quaternion [0.707, 0, 0, 0.707] points local X along world +y and local Y along world -x. An initial-like low approach would therefore point the fingers horizontally toward +y and close across x. The finger thickness in z might be about 0.02 m. At end-effector z = 0.79 m, their bottom might be around 0.77 m, about 5 mm above the estimated bar top at 0.765 m. Lowering the end effector to z = 0.775 m might put the finger bottom around 0.755 m and allow side contact. With contact at local x = 0.12 m, the end-effector y coordinate should be the bar-center y minus 0.12 m so the fingertips do not overshoot. Approaching from negative y with open fingers straddling the bar could work, although I would need to check arm-body clearance near the table. For the diagonal bar, I should align the horizontal finger direction with its long axis and the closing direction perpendicular to it. The estimated long-axis angle is about 32° from world x, or perhaps 40° after the bar was pushed. Using 32°, let v = (cos 32°, sin 32°, 0). Local X could follow v, local Y could follow (-sin 32°, cos 32°, 0) or the opposite closing direction, and local Z would point along +z. The rotation matrix with columns [v, perpendicular direction, z] is a 32° yaw rotation, with wxyz quaternion [cos 16°, 0, 0, sin 16°] ≈ [0.961, 0, 0, 0.281]. This is equivalent to rotating the initial 90° yaw orientation by -58°. The fingers would extend along the bar’s length and close across its width. For a contact point 0.12–0.14 m ahead of link6, I could use 0.13 m and the estimated bar center [0.102, -0.122, 0.765] m. The end-effector xy position would be center − 0.13v = (0.102 − 0.110, -0.122 − 0.069) = (-0.008, -0.191) m, at z = 0.775 m. That is very close to the yellow pepper at approximately [0, -0.214, 0.8] m and would cause a collision. The left red pepper might also matter, but the yellow pepper is the immediate obstruction to this front-left side approach. Approaching from the opposite end would put local X along -v ≈ (-0.848, -0.530, 0), pointing from back-right toward front-left, with local Z upward. The end-effector xy position would instead be center + 0.13v = (0.212, -0.053) m, again at z = 0.775 m. That may clear the loose objects, but it is close to the red basket’s front rim near y = -0.03 m and x = 0.21 m. The gripper would be below the rim height of about z = 0.84 m, just in front of it, with the fingers extending toward negative y away from the basket. The wrist or forearm could still collide with the basket; their clearance remains uncertain. A less exact front approach might be possible, but it would still face the yellow pepper obstruction. The free left arm could first move the yellow pepper into the right basket, clearing space for a side approach. It can handle the remaining peppers before more bar attempts. The other white bar near xy = [-0.062, -0.08] m might have a clearer front approach, though I still need to sort both bars. Another possibility is a top-down grasp near a sealed end rather than the thin center. The wrapper end might be thicker or have useful geometry. However, this chocolate bar is probably a rigid flat box with roughly uniform 0.01 m thickness. The purple bar’s successful center grasp shows that top-down grasping can work. The white and purple bars may use the same model with identical dimensions except color, so a thickness difference is uncertain. Could the yaw adjustment change pad height through roll or pitch? A pure yaw applied to the downward orientation preserves local X pointing downward, so that would not explain it. The localization may still be wrong enough in local Y to miss. The estimated world center was around xy = [0.102, -0.122] m, and the gripper was aligned there. But the high-camera center at pixel (366, 250), the assumed height z = 0.765 m, and the selected wrist center at (380, 260) may not agree precisely. The fingertip midpoint is near (320, 275), and after the +0.009 m x correction the bar still appeared near image x = 340 in obs_000290. I should project an independently estimated world point into the current wrist view and compare it with the observed bar. I’ll first unproject high-camera pixel (366, 250) onto assumed height planes, including z = 0.765 m, independently of the wrist estimate. The earlier wrist calculation gave xy = [0.1018, -0.1221] m; the high-camera plane estimate may differ. I’ll calculate that before choosing the next grasp setup.

At an assumed height of z = 0.765 m, the high-camera estimate of the bar’s xy position is [0.0981, -0.1211] m, while the wrist estimate is [0.1018, -0.1221] m. The discrepancy is 3.7 mm, which seems acceptable. The measured end-effector x coordinate of 0.1025 m is also close, so the xy alignment seems fine. Perhaps my assumption that the fingers are centered on the link6 origin is wrong. They extend along local +X, but an offset along local Y or Z could mean that the actual contact point does not share the end effector’s xy coordinates in a downward grasp. In the initial orientation, local Z points along world z, so an offset there would change height; local Y points along world -x, with the fingers presumably symmetric about it. Does local Z point along world -y in the downward orientation? For the base wxyz quaternion [0.5, -0.5, 0.5, 0.5], the matrix columns are local X = [0, 0, -1], local Y = [-1, 0, 0], and local Z = [0, 1, 0]. Thus, a local Z offset would shift the contact point along world y when pointing downward. A camera or gripper-root offset of, for example, 0.05 m along local Z might explain systematic misses on thin bars that larger objects tolerate. I could infer the fingertip center’s fixed local translation from the initial high-camera projection and the downward wrist-camera projection. I have been treating that center as local x = 0.1576 m, y = 0, but its local z coordinate might be -0.03 m or +0.03 m. The initial high-camera view seems to argue against such an offset. I first estimate the fingertip midpoint near pixel (122, 246). More specifically, the left finger tips appear near (91, 244) and (155, 244), giving a midpoint of (123, 244). Using the end-effector position plus 0.1576 m along world +y gives [-0.3, -0.1947, 0.9215] m, which projects to (124.6, 244.4), or roughly (125, 244). That is a very close match. A local Z offset would change both pixel coordinates through perspective, so an offset near zero seems the best fit. The local Y center may also be zero; there does not seem to be evidence of a centerline offset. I should still distinguish the supplied 0.1576 m farthest forward extent from the fingertip center’s actual distance from link6. With the downward orientation, I am still treating the fingertip center’s world xy coordinates as equal to the end effector’s. Perhaps the current orientation is not exactly downward despite the base quaternion mapping local X downward correctly. The measured right wxyz quaternion is approximately [0.608, -0.344, 0.612, 0.372]. I’ll compute the forward vectors and estimated tip positions from the measured orientations to verify that assumption.

The current right wxyz quaternion [0.608, -0.344, 0.612, 0.372] is not a pure yaw rotation of the downward orientation. Its local +X forward vector is [-0.0248, +0.0312, -0.9992], nearly downward but tilted about 2.3° because of the measured orientation drift. The estimated fingertip xy position is [0.0986, -0.1180] m, compared with the end-effector xy position [0.1025, -0.1229] m, giving an offset of [-0.0039, +0.0049] m. At the assumed bar height of z = 0.765 m, its estimated center is [0.0981, -0.1211] m in xy. The fingertip x coordinate matches closely, and its y coordinate of -0.1180 m differs from the bar’s -0.1211 m by about 3 mm. That seems acceptable. The grasp orientation at obs_000293 was similarly [0.608, -0.344, 0.612, 0.372], so this small tilt does not seem to explain the miss. I used [0.608, -0.344, 0.612, 0.372] as a subsequent target rather than my originally intended quaternion [0.611, -0.356, 0.611, 0.356]. Perhaps local IK joint coupling caused the measured orientation to deviate significantly during the earlier motion. Nevertheless, the fingers still point nearly downward. The minimum achieved end-effector height of z = 0.924 m may help infer the table height. With the forward vector’s z component around -0.999, the estimated fingertip height there is z = 0.7665 m. If the table is at z = 0.765 m, the fingertips would be essentially touching it, so that table height seems likely. The bar’s top might then be at z = 0.773 m rather than 0.765 m, with its bottom at 0.765 m. Perhaps the high-camera and wrist correspondence matched z = 0.765 m because I selected a bottom or edge point rather than the top surface. Although the high view shows the top outline, an edge pixel could lie on the side near the bottom, and wrist pixel (380, 260) could also correspond to that lower side. If the top center is at z = 0.773 m, its estimated world xy position is [0.0967, -0.1254] m. At the grasp pose, end-effector xy coordinates around [0.102, -0.122] m and the slight tilt put the fingertips near [0.098, -0.117] m. That leaves about an 8 mm difference in y, which could explain the miss. Using the approximate fingertip offset [-0.004, +0.005] m, aligning the tip with that proposed top center would require end-effector xy coordinates [0.1007, -0.1304] m. I used [0.102, -0.122] m, about 8 mm off in y. Perhaps the actual bar-center y coordinate is around -0.125 to -0.13 m, and I was too far toward +y, behind it. Did the fingers therefore close in front of the bar? That remains uncertain. I should localize the top surface with stereo correspondences that have low ray error to estimate its actual height and center. I’ll triangulate high-camera center pixel (366, 250) against candidate wrist centers, including (380, 260), using the recorded observations at steps 287, 290, and 293. This should let me assess the best correspondence rather than choose another height assumption.

Triangulating the high-camera center with wrist pixel (360, 275) gives an estimated point of [0.0972, -0.1223, 0.7675] m with a ray error of 0.001 m. That suggests the bar’s top center is around z = 0.7675 m and y = -0.1223 m. My estimated fingertip y coordinate was -0.117 m, about 5 mm away, so an end-effector y coordinate near -0.127 m might be needed. The correction is still small. A more fundamental possibility is that I began lifting before closure finished. The opening command of 0.315 after three steps may simply have been an intermediate interpolated command. After another three steps during the lift, it reached 0, and the bar remained on the table. For other objects, I often closed for three steps and then lifted, but their opening commands stayed around 0.4 because contact happened quickly. Here, the fingers may still have been closing when the lift moved them away from the bar, leaving or pushing it rather than securing it. If the bar had been between the fingers, I would have expected closure to stop at a nonzero opening. Could holding the grasp pose for three more steps have allowed contact? The final zero command does not resolve that, because the arm was already moving upward. I should try a third grasp and hold closure for six steps at the same pose before lifting. I can reopen, align at the minimum achieved height of about z = 0.924 m, and then close. If the opening remains greater than zero, I’ll lift; if it reaches zero, I’ll treat that as no grasp. I considered correcting the bar grasp to x = 0.10 m, y = -0.13 m. If further height adjustment is impossible, grasping a potentially thicker end of the bar is another option. The right arm is currently around z = 0.960 m with its opening command at 0, and the bar is still on the table. Meanwhile, the free left arm can approach a remaining pepper. The left red pepper is near xy = [-0.122, -0.212] m, and the yellow pepper is near [0, -0.214] m. I’ll choose the left red pepper, consistent with having the left arm handle peppers. The left end effector is currently at approximately [-0.201, -0.03, 1.036] m with an open gripper and a 35° tilt. I estimate the distance to the red pepper’s downward-oriented hover pose at about 0.197 m. I’ll target [-0.122, -0.212, 1.02] m. For the right arm, I’ll return to the exact downward wxyz quaternion [0.5, -0.5, 0.5, 0.5], without the yaw adjustment, to reproduce the simpler grasp that succeeded on the purple bar. Returning from roughly -30° of yaw requires about 0.52 rad of rotation. This orientation closes along world x. The bar’s long axis is about 32° in the table plane, with an estimated length projection onto x of 0.09 m; the gripper gap may be about 0.1 m, so it should fit as the purple bar did. With this downward orientation, I’m treating the end-effector xy position as the bar-center alignment. Rather than rotate while descending directly to z = 0.924 m, I’ll first reopen and rotate at a target of [0.098, -0.123, 1.0] m. At the current height of about 0.96 m, I estimate the fingertips at z = 0.802 m, about 35 mm above the bar’s estimated top at z = 0.767 m, so the opening and rotation appear clear. Afterward, I can descend toward z = 0.923 m and refine alignment. I considered a three-step action, but I’ll use six steps for this reopening and rotation while the left arm approaches the red pepper’s hover pose.

The right gripper has only partially completed its rotation, and the left arm is still partway through its approach to the red pepper. The right end effector is at z = 0.997 m, with a wxyz quaternion beginning with 0.554; I’m unsure how much yaw remains. I’ll continue toward the same targets for six control steps, aiming to finish the right gripper’s downward orientation before descending and bring the left arm closer to its pepper hover pose.

The right gripper is now pointing downward, and the chocolate bar appears centered near wrist-image pixel (310, 150). The left red pepper’s center appears near pixel (397, 350), while the left end effector is at [-0.159, -0.131, 1.025] m and has not yet reached its approach target. Continuing toward that target should center it over the pepper. I’ll use three control steps to begin lowering the right arm toward z = 0.94 m while continuing the left arm toward its existing target.

The chocolate bar appears near pixel (310, 190) in the right wrist view, spanning image x = 170–450, so its alignment looks good. I’ll lower the right end effector toward z = 0.923 m. The left red pepper’s center appears near pixel (360, 250). The left arm has not yet reached its target xy coordinates of [-0.122, -0.212] m; reaching that hover pose will likely bring the pepper toward image x = 320. The move from its current xy position of [-0.14, -0.174] m is about 0.042 m. I’ll use three control steps to finish the left hover correction at z = 1.02 m while the right arm descends, then inspect the next observation.

The right end effector is at z = 0.929 m. In its wrist view, the bar spans image x = 120–500, with its center near pixel (310, 245). The open fingertips are near x = 120 and 520 at image y = 260. The bar’s lower-left end is near the left finger, but its center lies between the fingers, so the alignment looks good. The minimum grasp height may be z = 0.923 m; the arm is only 6 mm above that target. I considered using two steps for this final descent. The left pepper is centered near wrist-image pixel (320, 165). The left end effector is at z = 1.02 m, and I estimate the pepper’s top near its center at z = 0.82 m. I need to descend toward a grasp height of z = 0.925 m, first targeting z = 0.96 m. I’ll use three control steps for both arms, lowering the left toward z = 0.96 m and the right toward z = 0.923 m with both grippers open.

The right end effector is now at the minimum achieved height of z = 0.923 m with an exactly downward orientation. The bar’s center appears near wrist-image pixel (310, 260), close to the fingertip midpoint at (320, 275). I’ll close the right gripper and hold its pose for six control steps before lifting, while the left arm descends toward the pepper’s grasp height of z = 0.925 m. The left end effector is currently at z = 0.987 m, so I plan two three-step actions. First, I’ll target z = 0.95 m on the left with its gripper open and close the right gripper without moving its arm. Then I’ll keep the right gripper closed at the same pose for another three steps while targeting z = 0.925 m on the left. For this action, I’ll use three steps with the left target at z = 0.95 m and the right gripper commanded closed.

In the right wrist view, the fingers appear near image x = 240 and x = 400. Is the bar between them, with contact near its edges? The black left finger spans roughly x = 200–240 at y = 270, and the right finger is near x = 400. At y = 275, the bar appears to span x = 220–400, so contact seems possible but remains uncertain. I’ll hold the right grasp pose and continue commanding closure for another three control steps while lowering the left arm to the pepper’s final grasp target at z = 0.925 m.

The right chocolate bar appears to have rotated into a vertical alignment in the high-camera image near pixel (366, 250), whereas it was diagonal before closure. The opening command remains at 0.121 after six control steps, so the bar is likely grasped, or at least sandwiched between the fingers. The closing fingers may have rotated it into alignment rather than missed it. The fingertips appear near the bar’s middle-to-lower section. I estimate its horizontal image extent at roughly 100 pixels; near the inner finger faces at x = 280 and x = 360, the bar’s width looks closer to 80 pixels, suggesting contact. I could hold closure for another three steps to see whether the opening command reaches zero, since 0.121 might still interpolate downward. Instead, I’ll make a small test lift and inspect whether the bar moves with the gripper. I’ll target the right end-effector height at z = 0.953 m, a 3 cm lift, with its orientation unchanged and gripper commanded closed. The left pepper is at the grasp height of z = 0.926 m, so I’ll simultaneously close the left gripper while holding its arm pose steady. I’ll use three control steps for both arms.

The right gripper’s opening command remains at 0.119. Did the bar move in the high-camera view? It still appears vertical near pixel (366, 250), but its bottom may have shifted slightly from image y = 265 to y = 263 as the gripper lifted. Its position relative to the wrist camera is unchanged, so I judge that it is held. The left pepper’s closure command is at 0.422, and I still need to verify that grasp with a test lift. I’ll raise the right bar to an end-effector target of [0.098, -0.123, 1.06] m and tilt it 35° toward the middle basket for transport. The right gripper currently points downward with zero yaw. Does the bar’s vertical appearance in the wrist image mean its long axis is aligned with local X? It rotated in the table plane during closure, and the fingers now appear to hold across its width stably. The transport tilt will rotate the bar out of the table plane, which seems acceptable. I’ll target a left end-effector height of z = 0.976 m for the pepper’s test lift, keeping its orientation steady. Both grippers will remain commanded closed. I’ll use three control steps, so the right lift and tilt may only be partially completed.

I’m uncertain whether the left red pepper moved during the test lift. The left end effector rose 0.033 m, from z = 0.926 m at obs_000326 to z = 0.959 m at obs_000329, but the pepper’s high-camera position looks nearly unchanged. My initial estimates were (255, 284) before and (254, 284) afterward; it may still be on the table near (254, 286). Another estimate puts its body at (253, 285) in both observations. The gripper surrounds and partly occludes it, so these pixel estimates are uncertain. If the pepper followed the lift, its estimated position at x = -0.122 m, y = -0.212 m, z ≈ 0.8 m would rise to z ≈ 0.833 m. I would expect roughly 20 pixels of upward motion in the high view, perhaps from (255, 285) to (252, 267), yet it still seems near image y = 285. This raises the possibility of another missed grasp: I started lifting after only three closure steps, without holding closure longer, as in the earlier failed bar attempts. The left opening command was 0.422 after closure and is now 0.419. For comparison, the previous right-pepper grasp used four closure steps at z = 0.925 m, reported an opening command of 0.416, and remained at 0.415 after a three-step test lift. That grasp succeeded, so the similar left commands do not resolve the uncertainty. My tentative high-view estimates across obs_000323, obs_000326, and obs_000329 are (255, 285), (253, 286), and (253, 286), which could indicate a roughly two-pixel push during closure rather than a lift. The wrist view supports the pepper being held. At obs_000326 it fills approximately image x = 140–500 and extends from y = 170 to the bottom; at obs_000329 it fills the same horizontal interval and extends from about y = 160 to the bottom. Its width remains roughly 360 pixels. If the pepper stayed stationary while the wrist camera rose, I would expect it to appear smaller and lower in the image. Its nearly unchanged relative appearance, together with the steady opening command, makes a successful grasp seem likely. I briefly considered whether motion in y from a tilt could explain the high view, but the left lift was vertical with no orientation change. The pepper might actually be near (253, 277), with its upward movement hidden by the black gripper. I should inspect closer comparisons before transporting it. The visible red region at obs_000329 seems near (251, 284), compared with the original body center near (254, 285), so the overhead evidence is still inconclusive. If its estimated bottom rose from z = 0.75 m to z = 0.783 m, I would expect that bottom to project near image y = 272, about 13 pixels upward; the visible red bottom may instead be near y = 292. I could compare image-template dimensions programmatically, but a visual comparison should suffice. I’ll prepare side-by-side high-camera crops and left-wrist images from obs_000326 and obs_000329 to check whether the pepper followed the lift.

I’ll inspect the before-and-after high-camera and left-wrist comparisons to check whether the red pepper moved with the left gripper during the test lift. The overhead view is partly occluded and the grasp remains uncertain, so I need this comparison before transporting it.

The zoomed high-camera crop confirms that the pepper is held: its bottom rises from image y = 260 to y = 240, a 20-pixel change. Both grasps are now confirmed. The left pepper belongs in the right basket, and the right chocolate bar belongs in the middle basket. Both transfers need motion toward +y, but the pepper must also move laterally from x = -0.123 m toward the right basket at x = 0.28 m, about 0.4 m across. Moving both objects through the middle simultaneously could cause an arm or object collision. I could let the left arm cross above the blue basket while the right arm moves away, but I prefer to place the right bar first while keeping the pepper staged left of center. After the right arm releases the bar and retracts, the left arm can cross toward the red basket. I’ll raise the left pepper to z = 1.06 m with a 35° transport tilt. I’m considering a staging position at x = -0.12 m, y = -0.12 m, which I am treating here as its current staging location, until the right arm retracts. The pepper could then pass through an intermediate position at x = 0.05 m, y = -0.05 m toward the right basket at x = 0.28 m. Meanwhile, the right arm could approach the yellow pepper at [0, -0.214] m in xy or the last chocolate bar. The pepper crossing and a right-arm grasp of the yellow pepper might be possible together with sufficient vertical separation, but I should avoid overlapping paths near the middle. The right bar’s measured end-effector position is [0.098, -0.123, 1.001] m, with only about 13° of the transport tilt completed. I’ll first raise it to z = 1.06 m and finish the 35° tilt. One possible middle-basket placement target is end-effector x = 0.03 m, y = -0.03 m, z = 0.94 m with that tilt. I initially considered the purple bar to be lying flat at the blue basket’s center, x = 0 m, y = 0.05 m. To avoid overlap, I could place the white bar at x = 0.06 m or -0.06 m. A right-side placement at x = 0.06 m, y = 0.04 m might overlap the purple bar, but resting on top at an angle would be acceptable if both bars remain contained and stable. There are three bars in total—two white and one purple—and the basket is about 0.22 m wide. With the white bar about 0.1 m long, they may fit side by side along x if their lengths run along y. The white bar rotated during grasping and now appears vertical in the downward wrist view; image vertical at the object plane corresponds roughly to world -y, so its long axis now seems to follow world y. However, the released purple bar appears near high-camera pixel (341, 174), and in observation 326 near (342, 173), with perhaps 20 pixels of vertical length. The blue basket’s image center is x = 320, so the purple bar may actually occupy its right half. Its image x coordinate might correspond to world x ≈ 0.05 m. I placed it with end-effector x = 0 m, which should project to image x = 320 regardless of depth, so it may have shifted about +0.05 m on release, or I may be misreading the view. Another estimate is world x ≈ 0.04 m after sliding during release. I’ll treat the right side as occupied and use the left side for this white bar: end-effector x = -0.05 m, y = -0.03 m with the 35° tilt. The estimated +0.075 m object offset in y would put its center at [-0.05, 0.045] m in xy. The last bar can use the center or right side later. The first red pepper is already lying on its side in the right basket, perhaps centered at x = 0.28 m, y = 0.05 m. I considered placing the left red pepper at x = 0.20 m or 0.35 m, or using x = 0.36 m on the right side. The estimated basket interior spans x = 0.14–0.41 m. I’ll favor x = 0.20 m, y = 0.04 m for the new pepper. With estimated half-widths of 0.04 m for both peppers, it would touch the existing pepper at x = 0.28 m, which seems acceptable. The yellow pepper could later use x = 0.36 m. For the left red pepper, the corresponding end-effector y target would be -0.03 m. For the immediate action, I’ll raise both end effectors to z = 1.06 m, keep both grippers closed, and target the 35° tilt for six control steps. Afterward, the right bar can move toward [-0.05, -0.03, 1.02] m while the left pepper remains staged at approximately [-0.12, -0.12, 1.06] m. I also considered starting the left crossing through [0.02, -0.10, 1.06] m once the right bar is over the blue basket, but that would put it near the bar’s path. I’ll keep the pepper on the left until the bar is placed.

The left arm has lifted only 0.026 m and is tilted about 23°. It still needs to reach the target height of z = 1.06 m, although I judge its current staging pose sufficiently safe to hold if needed. The right arm is at z = 1.06 m with a 35° tilt. I’ll move the right arm to [-0.05, -0.03, 1.02] m over the middle basket. I estimate the target distance at 0.176 m, within the command limit. The bar’s estimated bottom height is currently 1.06 − 0.142 = 0.918 m and would be 0.878 m at the target height, so I judge the path over the blue basket’s front rim clear. Meanwhile, I’ll finish raising the left arm to z = 1.06 m and tilting it to 35°, keeping the pepper staged on the left. Both grippers will remain closed. I’ll use six control steps.

The right arm’s move toward negative x, with an estimated target distance of 0.176 m, failed the precheck. I’ll first use a closer intermediate target at [0.03, -0.07, 1.03] m, which I estimate is 0.082 m away, then continue toward the final placement target. The left arm’s staging-lift target may pass, so I’ll retain it and use six control steps for both arms.

The held bar appears over the right or central part of the blue middle basket. In the wrist view, the purple bar is to its left at image x ≈ 230 pixels, while the held bar is near x = 320 pixels. I’m still uncertain about the purple bar’s actual world x coordinate; another wrist estimate puts it at image x ≈ 235 pixels. This suggests that keeping the right end effector at its current world x = 0.046 m would place the held bar about 0.05 m to the right of the purple bar, so I can place it there rather than shifting farther toward negative x. The right end effector’s current y is -0.084 m. With the 35° tilt and estimated +0.075 m object-center offset, the bar’s center would be at y = -0.084 + 0.075 = -0.009 m, toward the basket’s front. Moving the end effector to y = -0.03 m would put the estimated bar center at y = 0.045 m. I’ll target [0.046, -0.03, 1.0] m, requesting a 0.034 m descent and a +0.054 m change in y, then lower toward z = 0.93 m afterward. This avoids the previously rejected transfer toward negative x. The left pepper is staged at [-0.123, -0.213, 1.06] m. I could begin moving it toward the red basket through an intermediate xy position of [-0.02, -0.10] m, but that would bring it near the right gripper, with separations of about 0.066 m in x and 0.07 m in y. The current x separation is 0.169 m; with an estimated pepper radius of 0.05 m and bar length of 0.1 m, moving the pepper closer could cause a collision. I’ll keep the left arm stationary with its grasp closed until the right arm releases the bar. For this action, I’ll use six control steps to center and begin lowering the right bar while holding the left staging pose, then continue with lowering and release.

In the current wrist view, the held chocolate bar’s long axis appears vertical, spanning the middle basket from front to back. The purple bar now appears behind it and to the right rather than to the left, which I attribute to the changed viewpoint. The held bar is near image x = 320 pixels and the purple bar near x = 370 pixels, so they appear positioned side by side. I’ll lower the right end effector from z = 1.0 m toward z = 0.93 m. I estimate that this will bring the held bar’s bottom from z = 0.858 m to z = 0.788 m; the basket floor may be around z = 0.765 m. I’ll use four control steps while holding the left arm and its pepper at the staging pose, then release the bar afterward.

The right end effector is at z = 0.953 m, with the bar’s bottom estimated at z = 0.811 m. Lowering the end effector to z = 0.93 m would put the estimated bottom at z = 0.788 m. I could release it now with an estimated 4.5 cm drop, which might be stable, but I prefer to lower it farther first. I’ll use three control steps toward the right-arm height of z = 0.93 m while holding the left arm steady, then release the bar afterward.

I’ll release the white bar from the right gripper. I considered using four control steps and perhaps retracting in the same action, but I’ll first open the gripper for three steps while holding its arm pose steady. I’ll keep the left arm stationary with the pepper held at its staging pose.

The released white bar is leaning against the purple bar, but it is supported and contained in the middle basket. I’ll retract the open right gripper to z = 1.05 m at its current x and y coordinates while holding the left arm and its pepper steady, using five control steps. After retracting, I could move the right arm toward the yellow pepper at xy = [0, -0.214] m while the left arm carries the red pepper toward the right basket. Initially, that seems safe because the yellow pepper is toward the front center, away from the left pepper’s eventual path at y = -0.03 m. However, the simultaneous paths could cross: the right arm would move from [0.046, -0.03, 1.05] m to the downward-oriented hover pose [0, -0.214, 1.02] m, while the left arm would move from [-0.123, -0.213, 1.06] m toward an intermediate pose [0.08, -0.10, 1.06] m. They could meet near xy = [0, -0.10] m at similar heights, with the left arm holding a pepper and the right gripper open. That poses a collision risk. Moving the right arm toward the last white bar at xy = [-0.062, -0.08] m would also keep it near the center. I could instead leave the right arm over the blue middle basket until the left pepper reaches the red right basket, then approach the yellow pepper. Concurrent motion is unnecessary with about 743 control steps remaining. I considered shifting the retracted right arm to [0.15, -0.03, 1.05] m while the left pepper passes through xy = [0.05, -0.10] m toward [0.20, -0.03] m, but that right-arm position would conflict with the pepper’s destination path. Retreating the right arm toward the front-right area at [0.3, -0.25, 1.05] m is another option, although I estimate the distance from the blue basket as 0.28 m, exceeding the 0.25 m command limit and requiring an intermediate pose. A simpler option is to lift the right gripper and hold it at x = 0.046 m, y = -0.03 m while the left pepper passes in front of it, around y = -0.15 m, before moving back over the right basket. That gives about 0.12 m of separation along y; with an estimated pepper radius of 0.05 m and gripper extent of 0.06 m, it may be safe. The left arm would move back toward its final xy target [0.20, -0.03] m only once x exceeds 0.15 m, away from the right gripper. I’ll plan the left transfer from its current xy position [-0.123, -0.213] m through [0.10, -0.16] m, then toward [0.20, -0.03] m. Relative to the retracted right gripper at [0.046, -0.03, 1.05] m, that intermediate point has 0.13 m of y separation and 0.054 m of x separation, giving a distance greater than 0.14 m that I judge safe. The subsequent move toward the right basket increases the x separation. The right arm can remain over the middle basket until the left pepper is placed, then proceed to the yellow pepper. For now, I’ll only retract the open right gripper to z = 1.05 m and hold the left arm steady for five control steps.

The right end effector is at z = 0.992 m, and I estimate its fingertips are at z = 0.863 m, 23 mm above the basket rim at z = 0.84 m. I judge that sufficient clearance to hold there without completing the full retraction. The held left pepper can pass in front of the right arm at y = -0.16 m. I’ll begin its transfer toward the right basket through the intermediate position [0.05, -0.16, 1.06] m, maintaining the 35° tilt and closed gripper. The target is about 0.18 m away, within the command limit. I’ll hold the open right gripper at its current pose and use six control steps.

The left arm is passing in front of the right arm. Its current end-effector xy position is [-0.051, -0.192] m. In the high-camera view, the gripper holding the pepper appears near pixel (317, 212), in front of the blue middle basket, while the right arm appears near (335, 140). The separation looks good. I could continue through the previous intermediate xy target [0.05, -0.16] m and then toward the red right basket at [0.20, -0.03] m. A direct target of [0.20, -0.03, 1.04] m initially looks about 0.27 m away, but using the horizontal displacement components gives sqrt(0.251² + 0.162²) = 0.299 m, exceeding the 0.25 m command limit. I therefore need another intermediate pose. I’ll target [0.12, -0.14, 1.06] m for the left arm, which I estimate is 0.184 m away, before continuing toward xy = [0.20, -0.03] m. I’ll use six control steps, maintain the pepper grasp, and hold the right arm stationary.

The longer left-arm move across the body was rejected without motion, so I’ll use a smaller segment of about 0.08 m. The left end effector’s current xy position is [-0.051, -0.192] m. I’ll target [0.03, -0.17, 1.06] m, an estimated displacement of 0.084 m, before continuing toward xy = [0.12, -0.14] m. I’ll use six control steps and hold the right arm stationary.

The left end effector is now at x = 0 m, y = -0.178 m, and the right is at x = 0.054 m, y = -0.03 m. The arms are close, but their vertical separation along y is 0.148 m. What about the pepper’s top? I think the spacing is acceptable. I’ll move the left arm toward xy = [0.12, -0.14] m, an estimated target distance of 0.126 m, while holding the right arm stationary. The earlier move from x = -0.051 m to x = 0.12 m, about 0.18 m away, failed the precheck. This shorter move may pass. I’ll use six control steps.

The repeated best precheck position error of 29.536 mm suggests that moving the left arm into positive x may be restricted by joint 1. The left end effector is currently at x = 0 m; could joint 1 be near a limit around 0.5 rad? I do not know what joint 1 angle the x = 0.12 m target would require. A different tilt or a lower height might help. So far, I have used the left arm to transport objects into the left basket, rather than across its body. The right arm succeeded in crossing toward x = 0 m with a 35° tilt after lowering to z = 1.0 m. The left arm’s current height of z = 1.056 m may be too high, so lowering it to z = 1.0 m while moving right could help. I’ll try the left target [0.08, -0.15, 1.0] m. I estimate the horizontal displacement at 0.087 m, the vertical change at -0.056 m, and the total target distance at 0.103 m. The pepper’s estimated bottom height would be z = 0.858 m, above the basket rim, and the front path at y = -0.15 m avoids the rim. I’ll maintain the pepper grasp and hold the right arm at its current pose.

The right arm moved unexpectedly despite being commanded to hold its measured pose from obs_000374 at [0.054, -0.03, 0.993] m with wxyz quaternion [0.631, -0.325, 0.329, 0.624]. Its new measured position is [0.088, -0.012, 0.989] m, and its orientation has changed. The high-camera view appears to show contact near the center as the left upper arm crosses near the right arm. I suspect I brought the arms too close and pushed the right arm through contact. I need to stop the pepper transfer and replan for more clearance. The wrists or arms may be touching near image pixel (330, 150). The left gripper holding the pepper appears near (340, 210), in front of the right gripper near (385, 160), and their upper arms cross. The current left end-effector position is [0.034, -0.158, 1.044] m. I estimate the distance between the two end effectors at 0.162 m, mostly along y, but that does not account for the apparent contact between the arm bodies or elbows. I could move the empty right arm rightward, toward the front, or upward while holding the left pepper steady. One possible right target is [0.20, -0.05, 1.10] m, which I estimate is 0.144 m away and within the command limit. Retaining the roughly 35° transport tilt and moving toward its own side may separate the arms. Returning directly toward the front-right position [0.3, -0.3, 0.95] m would require an estimated 0.35 m move, exceeding the 0.25 m limit. An intermediate target of [0.20, -0.10, 1.05] m would be about 0.16 m away. I estimate its separation from the left pepper’s current position at 0.176 m. The right elbow might still remain near the center, but moving rightward should help. I’ll hold the left arm at its current measured pose with the pepper grasp maintained and move the open right gripper toward [0.20, -0.08, 1.06] m with the 35° tilt. I estimate this target is 0.131 m away, within the command limit. I initially considered six control steps, but this is collision recovery, so I’ll use a shorter four-step action.

The right arm has moved only partway, about 0.04 m, and the arms are still close. I’ll continue toward the right-arm target of [0.2, -0.08, 1.06] m for six control steps while holding the left arm steady with the pepper grasp maintained. This should create more separation before I resume the transfer.

The right arm is back on its own side, and the arms now appear clear of each other. The left arm holds the red pepper at x = 0.034 m, y = -0.158 m and needs to continue toward the right-basket target at x = 0.20 m, y = -0.03 m. The right arm is at x = 0.192 m, y = -0.075 m, close to that destination path. I should move the empty right arm farther toward the front-right area, perhaps to [0.32, -0.25, 1.05] m or its initial pose, before continuing the pepper transfer. Another option is to move the right arm directly from [0.192, -0.075, 1.055] m to the yellow pepper’s hover pose at [0, -0.214, 1.02] m with the gripper pointing downward. I estimate that target distance at 0.243 m, within the 0.25 m limit, with an orientation change of about 0.61 rad. Initially this seems ideal: the right arm would move frontward and leftward while the left arm moves rightward and back. However, their paths run in roughly opposite directions along the same diagonal and could cross midway. I estimate their current separation at 0.222 m. I could move the right arm first while holding the left steady, then resume the red-pepper transfer, but the direct target might fail the precheck. An intermediate right pose at [0.10, -0.15, 1.03] m with the 35° tilt is about 0.125 m away, yet it would come within about 0.066 m of the left arm’s current xy position. That is too close. Instead, I’ll move the right arm straight toward the front at x = 0.192 m, targeting [0.192, -0.25, 1.03] m with a downward orientation. I estimate the target distance at 0.175 m and the orientation change at 0.61 rad. This keeps an x separation of 0.158 m from the stationary left arm, which I judge safe. Staging the right arm at xy = [0.192, -0.25] m also keeps it away from the left arm’s planned path from [0.034, -0.158] m to [0.20, -0.03] m. The minimum separation might be about 0.1 m; at the left arm’s destination, its separation from that right staging point would be about 0.22 m. I’ll use six control steps to move the open right gripper to the front-right hover pose while holding the left arm steady with the red pepper grasp maintained. After that, the left arm can continue toward the right basket while the right arm moves leftward toward the yellow pepper at xy = [0, -0.214] m, giving them diverging paths.

The left arm drifted slightly while holding, moving +0.005 m in x and -0.009 m in y. Could there still be contact between the arms? The right arm has moved farther away, which looks acceptable so far. I’ll continue the right arm toward the same front-right target at y = -0.25 m for six control steps, while holding the left arm at its current measured pose with the pepper grasp maintained. I’ll use the left arm’s current wxyz quaternion [0.636, -0.326, 0.321, 0.621] rather than its previous orientation to avoid commanding it back toward the earlier pose.

The left arm’s measured xy position has drifted from [0.039, -0.167] m to [0.059, -0.202] m despite the hold target. I estimate the position drift at 0.039 m over six control steps, which is substantial. Why is it moving? The pose could be near a singularity or joint limit, and gravity or controller behavior could contribute. The rounded quaternion should still allow a stable hold, but recomputing IK at every step might produce drift if there are initial errors. Contact with the right arm is another possibility: as the right arm moves forward, it may be pushing the left arm forward and rightward. The right end effector is at [0.22, -0.157, 1.044] m, and the left is at [0.059, -0.202, 1.042] m. I estimate their separation at 0.166 m. The high-camera view seems to show the left upper arm crossing under the right near the center, although I am unsure whether they touch. Their elbows, wrists, or forearms may still be in contact even if the grippers are separated. I need to increase clearance more urgently rather than continue the pepper transfer. Continuing the right arm forward toward y = -0.25 m should move it away, but holding the left arm may allow further drift until they are clear. I could retreat the left arm toward its own side, although carrying the pepper back would make the transfer harder. Raising it to z = 1.10 m at its current xy position might lift its elbow and create vertical separation; the pepper itself is already clear. Another option is a left target of [0, -0.20, 1.08] m while the right continues forward. I estimate that left move at 0.07 m, within the command limit, and it might relieve the cross-body configuration. The pepper still needs to reach the right basket; I will not attempt a handoff. I prefer to retreat the left arm farther toward the center-front, targeting [-0.03, -0.23, 1.08] m with the 35° transport tilt and the pepper held. I initially estimate that move at 0.096 m and judge the front-left retreat clear of the right arm. The empty right arm will continue toward [0.192, -0.25, 1.03] m with a downward orientation. From its current pose, I estimate that target distance at 0.098 m, and its orientation is already nearly downward. I also estimate the final left target distance at about 0.098 m. Its current wxyz quaternion is [0.654, -0.313, 0.342, 0.598]; I am not certain of its precise tilt, but I will target the 35° transport orientation. I considered ten steps to move the right arm away quickly, then six or eight steps for the combined motion. I judge this navigation clear and will use eight steps, keeping the left gripper closed and the right gripper open. Once the right arm reaches the front-right area and proceeds toward the yellow pepper, I can resume transferring the held red pepper.

The arms are now separated. The right camera shows only the table; the yellow pepper at x = 0 m is outside its view. I could move the right arm to the yellow pepper’s downward-oriented hover pose at [0, -0.214, 1.02] m, but holding the left arm at [-0.024, -0.23, 1.078] m would bring the arms too close. I considered moving both arms simultaneously: the left toward an intermediate pose at [0.10, -0.15, 1.02] m for the red-pepper transfer, and the right toward the yellow pepper at [0, -0.214, 1.02] m. From their current xy positions of [-0.024, -0.23] m and [0.193, -0.248] m, I estimate an initial separation of 0.218 m and a separation of 0.122 m at those targets. With estimated gripper or object radii of 0.05 m each, that leaves only about 0.02 m of margin. The arm bodies could still interfere near x = 0 m, y = -0.2 m. I’ll move the held red pepper to the right basket first while the empty right arm waits in the front-right area, then approach the yellow pepper. Earlier cross-body moves with the left arm failed at a high z coordinate. Its current height is z = 1.078 m, so a lower path may be reachable. I’ll first target [0.08, -0.15, 1.0] m, which I estimate is 0.142 m from the current left pose, before continuing toward [0.20, -0.03, 1.0] m over the right basket. With the right arm held at [0.193, -0.248, 1.03] m, I estimate 0.156 m of separation at the intermediate target and 0.218 m of separation along y at the later basket target. I judge those positions clear enough for this sequence. For this action, I’ll use six control steps to move the left arm toward the lower intermediate pose with the 35° transport tilt and its gripper closed. I’ll hold the right arm at its measured pose and downward orientation with its gripper open. The lower left target may pass the precheck; I’ll inspect the feedback before continuing.

The left end effector is now at [0.03, -0.188, 1.034] m. I’ll continue toward its intermediate target of [0.08, -0.15, 1.0] m while holding the right arm steady. I’ll use six control steps.

The left end effector is now at x = 0.073 m, y = -0.155 m. I could move it toward the right basket at [0.20, -0.03, 1.02] m or use the lower height of z = 1.0 m. I estimate the target distance at 0.177 m, within the command limit. However, reaching x = 0.20 m across the left arm’s body with the 35° transport tilt may still fail the precheck. The lower height may help, or I may need an intermediate pose near x = 0.14 m, y = -0.10 m. I’ll use the intermediate target [0.15, -0.10, 1.02] m, which I estimate is 0.097 m away. I’ll keep the pepper grasp closed, hold the right arm steady, and use six control steps.

The left arm’s cross-body target failed the precheck with a large position error. I should consider changing its orientation to ease the configuration. It currently has a 35° tilt toward +y while reaching across to the right. Perhaps increasing that tilt to 45° or 50°, or changing the yaw, would keep the wrist joint from limiting the motion. The right arm’s cross-body transfer succeeded with a 35° tilt and a lower height of z = 1.0 m; the left arm may need more tilt or a lower height. Are its current joints 2 and 3 near their limits? I’ll read current_state from obs_000422 before choosing the next motion.

The left arm is moving toward the front over the yellow pepper. In the high-camera view, the held red pepper appears directly behind the yellow pepper near pixel (320, 280); in the wrist view, the yellow pepper is adjacent on the left and toward the back. The red pepper’s center may be near x = 0.034 m, y = -0.18 m. With the end effector at approximately [0.034, -0.224] m in xy and tilted about 15°, I also estimate the object-center y coordinate near -0.19 m. The yellow pepper is near [0, -0.214] m in xy, giving an estimated separation of about 0.04 m and a possible collision risk. Has the yellow pepper shifted? Its high-camera center was near pixel (320, 285) and now appears near (320, 286), so it may have been touched, but contact remains uncertain. I need to avoid further collision. Continuing toward the front-table handoff point at [0, -0.33, 1.0] m moves the end effector and held pepper toward negative y, away from the yellow pepper. I’ll continue to that hover pose and finish the downward orientation over eight control steps, keeping the left grasp closed and the right arm stationary.

The yellow pepper is no longer visible at its original high-camera pixel position of (320, 285) in obs_000438. It may be occluded by the left arm or the held red pepper. The red pepper appears near (320, 340), and the left gripper near (320, 300), with the yellow pepper’s original position behind it. The yellow pepper may instead have been pushed elsewhere; I’ll need to locate it later. The left end effector is at [0.006, -0.312, 1.001] m, and I estimate the held red pepper’s bottom at z = 0.838 m, still above the table. The yellow pepper may be behind it near y = -0.25 m, while the red pepper’s handoff target at y = -0.33 m should provide separation. I’ll lower the left end effector toward z = 0.926 m with the grasp maintained, holding the right arm steady, then release the pepper afterward. I considered six control steps for the descent, but I’ll use five for this action.

The left end effector is at z = 0.947 m, with the red pepper’s bottom estimated at z = 0.786 m and the tabletop at z = 0.765 m. I’ll continue lowering the left arm toward z = 0.926 m for three control steps, then release the pepper for handoff.

The yellow pepper appears visible near pixel (318, 273) in the high-camera view, behind the left arm and near the red pepper. It has moved from approximately (320, 285) to (318, 273), farther along y; perhaps a collision pushed it back. It is still on the table. The red pepper is near pixel (320, 355), toward the front. I’ll release the red pepper over three control steps while holding the right arm steady.

The red pepper has been released. I’ll retract the left gripper before approaching the last white chocolate bar near xy = [-0.062, -0.08] m. A combined lift and move from [0, -0.33, 0.926] m to [-0.062, -0.08, 1.02] m with the gripper pointing downward would be about 0.274 m, exceeding the 0.25 m command limit. I considered first lifting at the same xy coordinates to z = 1.03 m, then moving toward the bar. The right arm should approach the red pepper’s handoff location after the left gripper clears it. From its current position of [0.193, -0.248, 1.03] m, the right-arm hover target [0, -0.33, 1.02] m is about 0.21 m away, within the limit, but the left gripper is still directly over the pepper. For now, I’ll lift the open left gripper to z = 1.04 m and hold the right arm steady for five control steps. Afterward, the left arm can move toward the bar while the right approaches the red pepper, with their paths diverging.

The left end effector is at z = 0.983 m. I estimate the fingertips at z = 0.825 m and the released pepper’s top at about z = 0.83 m, so the fingertips are still near the pepper rather than clearly above it. I’ll lift the open left gripper farther toward z = 1.04 m for four control steps while holding the right arm steady. Once the left gripper is clear, the arms can move along diverging paths toward their next objects.

The left fingertips are now at an estimated z = 0.869 m, above the pepper’s top at about z = 0.83 m, so they are clear. I considered moving directly toward the last chocolate bar at [-0.062, -0.08, 1.04] m. My initial distance estimate was about 0.253 m; using displacement components of approximately [-0.06, +0.251, +0.013] m gives about 0.259 m, slightly beyond the 0.25 m command limit. I’ll instead use the intermediate left-arm target [-0.04, -0.17, 1.04] m, about 0.166 m away. The right arm can approach the released red pepper at [0, -0.33, 1.02] m, about 0.21 m away. Starting from left-arm xy coordinates of approximately [0, -0.331] m and right-arm xy coordinates of [0.193, -0.248] m, their paths should diverge: the left arm moves back toward the chocolate bar while the right moves left and toward the front handoff point. I’ll use eight control steps for these targets. The right arm’s cross-body target at x = 0 m and z = 1.02 m may pass the precheck.

The yellow pepper is visible again near pixel (320, 285) in the high-camera view and in the left wrist view. Has it moved? With the left end effector at approximately [-0.034, -0.213] m in xy and the yellow pepper centered near wrist pixel (407, 157), its world position may be around x = 0 m, y = -0.25 m. The right arm should grasp it later. The released red pepper is near high-camera pixel (320, 350) and appears at the left edge of the right wrist view. The right arm still needs to approach its hover pose at [0, -0.33, 1.02] m. The left arm can continue toward the last chocolate bar at [-0.062, -0.08, 1.04] m. The arms are diverging, although I briefly wonder whether the grippers are close around the yellow pepper. In the high view, the left gripper is near (300, 225) and the right near (410, 280), which looks acceptable. I’ll continue both approaches for eight control steps with both grippers open.

The red handoff pepper appears near pixel (290, 170) in the right wrist view, slightly left of center. I’m uncertain about the x correction: perhaps +0.01 m, or perhaps -0.005 m given the current end-effector x = 0.011 m and an estimated pepper x = 0 m. I’ll unproject it later to check. The last chocolate bar appears near pixel (310, 65), toward the top of the left wrist view. Moving the left end effector from xy = [-0.058, -0.119] m toward [-0.062, -0.08] m takes it back along +y and should center it over the bar. The yellow pepper appears near pixel (435, 330) in that view and seems to be lying on its side with its stem pointing right. It was upright before, so my earlier collision may have toppled it. The right arm occludes it in the high-camera view, but it remains sortable. The red handoff pepper appears upright. I’ll continue toward the left hover target [-0.062, -0.08, 1.04] m. The right arm is close to its tentative red-pepper hover target [0, -0.33, 1.02] m, so I can begin lowering it toward z = 0.96 m while the left arm finishes alignment. I’ll use three control steps.

The last chocolate bar spans approximately image x = 220–425 and y = 60–165 in the left wrist view, with its center near (322, 112). The left end effector is at [-0.062, -0.098, 1.036] m. I’m unsure how moving its y target to -0.08 m will change the bar’s apparent alignment. With the assumed bar-top height of z = 0.765 m, the vertical difference is 0.271 m, and its projection is near image y = 110. The bar’s world center may be near y = -0.08 m, but its alignment with the fingertips remains uncertain. I could unproject pixel (320, 115) at z = 0.765 m to estimate its world position. I’ll leave that calculation for later; the xy target [-0.062, -0.08] m is likely correct. The red pepper is centered near pixel (320, 200) in the right wrist view. The right end effector is at z = 0.984 m and needs to continue toward z = 0.925 m. I considered finishing the left hover at z = 1.04 m before descending. Instead, I’ll combine its remaining y correction with a short descent, targeting [-0.062, -0.08, 0.97] m while the right arm continues toward z = 0.925 m. I’ll use three control steps with both grippers open. The left arm may move only partway, and I should check the final alignment before grasping.

The right end effector is at z = 0.95 m above the red pepper and needs to continue toward its grasp height of z = 0.925 m. The last chocolate bar appears centered near pixel (320, 165) in the left wrist view. The left end effector is at z = 0.999 m, still above its previous target of z = 0.97 m. Its current xy position is [-0.061, -0.086] m, while the bar’s center may be near [-0.062, -0.08] m, so I’ll retain the y target of -0.08 m. For the bar, I plan a final grasp height of z = 0.923 m and six control steps of closure before lifting, as learned from the earlier grasp. For now, I’ll use three control steps with both grippers open, targeting z = 0.94 m on the left and z = 0.925 m on the right. Afterward, I plan to lower the left arm to z = 0.923 m while closing the right gripper for three steps.

The right end effector is at z = 0.926 m, ready to grasp the red pepper. I’ll close the right gripper while lowering the open left gripper to its final grasp-height target of z = 0.923 m above the last chocolate bar. I’ll use three control steps for both arms.

If the bar’s center is at wrist-image pixel (320, 335), the plane calculation gives its world y coordinate as -0.1018 m. The left end effector is at y = -0.0793 m, so the gripper would be about 22 mm behind the bar in the +y direction. I should then move the end effector to y = -0.102 m to center it. That would mean my original high-camera estimate of y = -0.08 m was wrong because of the assumed bar-top height and selected pixel. However, the high-camera center may be near pixel (291, 235), or the originally selected (292, 235), which likely lies on the top surface. Unprojecting (292, 235) onto a plane at z = 0.765 m might give y ≈ -0.074 m or -0.075 m, whereas the close wrist estimate gives y ≈ -0.102 m. Which estimate is correct? I need to check the image and calculate the high-camera estimate before choosing the correction.

The dark band at the top of the left wrist view is likely the blue middle basket’s wall rather than the gripper. The camera looks toward negative y and downward. With the left end effector at approximately y = -0.079 m, z = 0.928 m, I estimate the camera origin at y = -0.028 m, z = 0.843 m, almost exactly at the basket’s front rim near y = -0.03 m, z = 0.84 m. The camera may be behind or embedded in the wall, explaining the occlusion. The bar is in front of the basket near y = -0.10 m. Camera or arm contact with the rim is also possible, although the gripper itself need not be colliding. I could use the high camera and perhaps the right wrist view to check this. This might explain why further descent below z = 0.923 m has been difficult for bars near the basket. For the earlier right-bar approach at x = 0.098 m and end-effector y = -0.123 m, the camera’s estimated y coordinate was -0.072 m, in front of the rim at y = -0.03 m, so that approach would avoid this contact. For the left bar, end-effector y = -0.08 m puts the camera near y = -0.029 m, directly at the rim. Moving the left gripper toward more negative y should move the camera away from the rim and also center the grasp if the bar is indeed near y = -0.10 m. The correction to y = -0.102 m therefore seems appropriate. The right pepper’s opening command is 0.41 after three closure steps. It is likely held, but closure and grasp stability still need checking. I could hold the right pose longer while aligning the left arm, or test-lift it now. I’ll use three control steps to move the open left gripper from its current height of z = 0.928 m toward [-0.062, -0.102, 0.923] m, with the downward orientation. At the same time, I’ll keep the right gripper commanded closed and target [0, -0.33, 0.976] m for a short test lift. In the next observation, I’ll check whether the left bar is centered and the wrist view is unobstructed, and whether the right pepper moves with its gripper.

The left wrist view is now unobstructed. The bar appears slightly right of center, initially near pixel (360, 240). It spans approximately image x = 120–610, with another center estimate of (365, 235), compared with the fingertip midpoint at (320, 275). The left end effector is currently at [-0.062, -0.099, 0.925] m, so I need to refine its alignment before closing. One candidate bar center is pixel (350, 250); unprojecting it at an assumed height of z = 0.765 m might give world x ≈ -0.05 m. I estimate the red left-end center at (140, 305) and the white right-end center at (575, 180), giving a midpoint of (357.5, 242.5), or approximately (358, 243). Unprojecting that point might give world x = -0.0517 m and y = -0.0916 m, but these are tentative estimates that I should calculate using the current calibration. The right red pepper appears held: its opening command remains at 0.409 and its wrist-view position is unchanged. Did it lift in the high-camera view? That evidence is less clear, but I judge the grasp confirmed. I can transport it after closing the left gripper. First, I’ll calculate the bar’s position from the candidate wrist pixels. With the left fingers pointing nearly downward, I’ll use the estimated bar-center x and y coordinates to align the end effector, since the fingertip xy position is nearly the same as the end effector’s.

A left end-effector target at xy = [-0.053, -0.094] m may center the bar near wrist-image pixel (320, 275). From the current xy position of [-0.062, -0.099] m, the correction is +0.009 m in x and +0.005 m in y. I initially wondered whether this would shift the bar left and upward in the image. Earlier, moving the end effector toward more negative y shifted the bar from image y = 340 to 240, upward, so increasing y by 0.005 m should instead move it downward toward 275. Increasing x by 0.009 m should shift it left. I’ll therefore use the nearby left target [-0.053, -0.094, 0.923] m with the gripper open. The right red pepper has been lifted to an end-effector height of z = 0.96 m. While the left arm aligns, I’ll raise the right arm toward [0, -0.33, 1.06] m with the pepper held and a 35° transport tilt. I’ll use three control steps for this combined action. After alignment, I plan to close the left gripper for six control steps before lifting, and transport the right pepper later.

The bar’s red left end triangulates to approximately [-0.092, -0.103, 0.766] m. Matching high-camera pixel (276, 242) with wrist pixel (170, 310) gives an error of about 0.007 m, which looks good. I did not find matching points for the white right end, likely because my pixel estimates were inaccurate. Estimating the center as 0.05 m along the long axis from the red left end, in the world direction (+0.9, +0.3), gives xy coordinates near [-0.047, -0.088] m, close to the current left end-effector xy position of [-0.053, -0.094] m. The center correspondence using wrist pixel (300, 250) gives another tentative world estimate of [-0.0592, -0.0859, 0.7685] m. I’ll use [-0.059, -0.086] m as the refined end-effector xy target. Relative to that target, the current position is 0.008 m more negative in y and 0.006 m more positive in x. Closure might still work at the current position if I hold it long enough, but I’ll make the small correction while keeping the target height at z = 0.923 m. With the current exactly downward orientation, I am treating the fingertip xy coordinates as equal to the end-effector’s, so this should align the fingertips with the estimated bar center. I considered two control steps for the alignment, then six steps of closure. I’ll use three steps for this action while the right arm continues raising its held pepper from the current end-effector height of z = 0.987 m toward z = 1.06 m with a 35° transport tilt. I’ll inspect the left alignment afterward before closing.

The left arm did not fully reach its alignment target. Its current xy position is [-0.054, -0.093] m, close to the previous pose. Although the requested move was small, its quaternion changed significantly. Could the fingers be touching the bar and preventing the alignment correction? That remains uncertain, but the bar is visible between the open fingers. I could close at the current pose and hold closure for six control steps, as I did for the successful right-hand bar grasp. The left bar still appears diagonal, with its center around wrist pixel (380, 170), possibly too high in the image. The successful right-hand grasp had the bar centered around (310, 260). Closure may push or rotate this bar into the gripper and secure it; if that fails, I can try a side grasp. With 605 control steps remaining, I’ll attempt closure now and inspect the result after holding it. I’ll first close the left gripper for three steps while the right arm continues raising its held pepper toward z = 1.06 m, then plan another three steps of closure before lifting the bar.

The left fingers appear to be closing around the bar’s red left end rather than its center, while the bar extends out of the frame toward the upper right. An end grasp is acceptable if it is stable. The left finger appears to touch the red end near pixel (230, 290), but I’m unsure whether the right finger near (410, 270) is touching the bar. Does the bar cross the left finger and lie between the fingers? The right finger might contact it farther toward the upper right. The left opening command is 0.338, and closure is still progressing. I’ll hold the grasp pose and continue closure for three more control steps while the right arm finishes lifting its held pepper toward the target height of z = 1.06 m.

The left gripper’s opening command remains at 0.168 after six closure steps, and the bar has rotated toward the center between the fingers. It is likely grasped near its end, but I should verify this with a small test lift while the right arm begins transporting the red pepper to the right basket. The right end effector is currently at [0, -0.33, 1.057] m with an approximately 32° tilt, which I judge safe for transport. The intended basket hover target is [0.28, -0.025, 1.04] m. I estimate its distance at 0.409 m, exceeding the 0.25 m command limit, so I’ll first use the intermediate target [0.14, -0.20, 1.04] m, estimated to be 0.195 m away, then continue toward [0.28, -0.025] m in xy. I should check clearance from the yellow pepper along this path. I am treating the held red pepper as starting at xy = [0, -0.33] m and the yellow pepper as being at [0, -0.214] m, giving an initial separation of 0.116 m. As the red pepper moves rightward toward [0.14, -0.20] m, I judge the path clear of the yellow pepper. I’ll target the left arm at [-0.059, -0.086, 0.953] m for the test lift, keeping its gripper closed. The right arm will move toward [0.14, -0.20, 1.04] m with a 35° transport tilt and its gripper closed. I estimate the separation between the left xy target [-0.059, -0.086] m and the right xy target [0.14, -0.20] m at 0.229 m, which I judge safe. I’ll use three control steps; the right arm may move only partway toward its intermediate target while the left performs the verification lift.

The left bar is held after the test lift, with an opening command of 0.155, and the right red pepper remains held. The measured end-effector positions are [-0.059, -0.087, 0.952] m on the left and [0.027, -0.305, 1.055] m on the right. I’ll transport the bar to the middle basket and the pepper to the right basket. I should first raise the left arm to z = 1.06 m with a 35° transport tilt while the right arm continues toward its intermediate pose. The arms may come near the middle basket later, so I need to coordinate their paths. A tentative left placement target is x = -0.05 m, y = -0.03 m, z = 0.95 m with the 35° tilt. The right pepper’s eventual basket target has x = 0.28 m and y = -0.025 m. The left bar’s path stays around y = -0.08 to -0.03 m, while the right pepper moves from the front around y = -0.3 to -0.2 m before moving back toward its basket. At the right basket target, x = 0.28 m is well separated from the left arm’s proposed x = -0.05 m, so I judge these coordinated paths safe. For this action, I’ll use six control steps, targeting the left arm at [-0.059, -0.087, 1.06] m and the right arm at [0.14, -0.20, 1.04] m. Both grippers will remain closed, with both target orientations set to the 35° transport tilt.

The left opening command has reached 0.0, and the bar is no longer clearly visible with the left gripper. It appears to have slipped during the lift and transport tilt. In the high-camera view, I see a vertical white/red bar near the blue middle basket’s left edge at approximately pixel (292, 186), alongside the previously placed white bar near (330, 172) and purple bar near (349, 171). Perhaps the last bar fell into the middle basket, which is its intended destination. It may count toward the task if it is inside, but I need to verify that. At obs_000510, the left wrist view shows the white/red bar at the upper right and the purple bar in the blue basket. There may also be a red/white sliver at the bottom between the closed fingers, though I am uncertain what it is. The last bar is absent from its old tabletop position near pixel (291, 235), suggesting that it was lifted and then dropped. It could have fallen onto the table, into the blue basket near (292, 188), or behind the left arm. The long white/red strip along the basket’s left wall, estimated near (292, 189), is likely the last bar, but it may be obscured in the wrist view by the camera or left wall. I am interpreting the zero opening command as indicating that the object was lost during the lift and tilt. I should open the left gripper and move it higher to inspect the drop location rather than continue transporting with an apparently empty, closed gripper. I briefly considered whether the bar could still be loosely held, although I regard that as incompatible with the zero opening command; opening the gripper is still my next choice. The left end effector is currently at [-0.059, -0.087, 1.047] m. I’ll keep its x and y coordinates unchanged and raise its target height to z = 1.1 m with the gripper open, a requested displacement of 0.053 m, to get a clearer view of the middle basket. Meanwhile, the right arm will continue carrying the red pepper toward its intermediate target of [0.14, -0.20, 1.04] m with its gripper closed. I’ll use five control steps, then inspect the high and wrist views to determine where the bar landed.

The clearer view shows that the last chocolate bar fell onto the table in front of the blue middle basket, near high-camera pixel (305, 215), rather than inside it. The right wrist also sees it at the left edge. I can regrasp it from above with the left arm; its isolated position near the basket may make this easier. My first tentative estimate of its world xy position is around [-0.03, -0.15] m, but I need to calculate its location. The right arm can place the red pepper and then handle the yellow pepper, while the left arm regrasps the bar and places it in the middle basket. I do not expect crossing paths to be a concern with that allocation. The left end effector is currently at [-0.06, -0.088, 1.098] m with its gripper open. I’ll unproject high-camera pixel (305, 215) onto an assumed height plane of z = 0.765 m. I tentatively expect x around -0.03 m and y around -0.045 m; another estimate is x ≈ -0.031 m and y ≈ -0.038 m. The pixel’s vertical coordinate of 215 is less than 240, which suggests a small negative world y coordinate, but I should use the proper ray-plane calculation. The bar appears below the basket’s front rim in the image, near image y = 210. I estimate the front rim’s world y coordinate at -0.03 m, while the bar might be around y = -0.04 m or -0.07 m. The earlier bar estimate from pixel (292, 235) gave y ≈ -0.084 m; pixel v = 215 might instead give y ≈ -0.034 m, which would put it inside the estimated front boundary. Perhaps the rim is nearer y = -0.02 m and the bar center nearer -0.05 m. These estimates remain uncertain. The left wrist sees the bar near pixel (385, 360), so I’ll also localize that point at z = 0.765 m. For the next grasp, I should complete closure and lift without tilting until the bar is higher. It slipped during the combined lift and tilt at an end-effector height of z = 1.047 m, which I attribute to a weak grasp near its end. This time I should grasp closer to its center and keep the initial transport vertical. I could retain the downward orientation for the short transfer to the nearby middle basket and use only a 20° tilt, or use a small translation with minimal tilt throughout. The right red pepper remains held, with its end effector at [0.127, -0.213, 1.043] m. The intended right-basket hover target is [0.28, -0.025, 1.04] m. I initially estimate the target distance at about 0.248 m; the horizontal changes of +0.153 m and +0.188 m suggest about 0.242 m, within the 0.25 m command limit. The precheck may pass with the 35° transport tilt, but I’ll favor an intermediate target of [0.22, -0.12, 1.04] m, estimated to be 0.134 m away, while the left arm localizes and approaches the dropped bar. A tentative left hover target is [-0.03, -0.06, 1.02] m with a downward orientation, starting from its current height of 1.098 m and 35° tilt, but I should calculate the bar’s position before choosing that target. I’ll first compare the high-camera and left-wrist ray-plane estimates.

The high-camera and wrist estimates disagree, perhaps because I selected the high-camera center near pixel (305, 216) and the wrist center near (385, 360). Triangulation could refine this, but I’ll tentatively use bar-center xy coordinates of [-0.025, -0.045] m. The bar is near the blue basket’s front rim at y = -0.03 m. With a downward gripper at end-effector y = -0.045 m, I estimate the camera would be at y = +0.006 m and z ≈ 0.84 m, inside the basket and vulnerable to rim occlusion again. Moving the end effector farther forward might help visibility, but a centered top-down grasp requires its y coordinate to match the bar’s. I could turn the downward gripper 180° so the wrist camera sits toward world -y rather than +y. The alternative downward wxyz quaternion [0.5, 0.5, 0.5, -0.5] has local Y along world +x and local Z along world -y, whereas the base quaternion [0.5, -0.5, 0.5, 0.5] has local Y along world -x and local Z along world +y. They differ by 180° about the downward finger axis, preserving closure along world x. I estimate that the camera offset would change from [0, +0.051, -0.085] m to [0, -0.051, -0.085] m relative to the end effector. That would put the camera in front of the basket, away from the rim, while its rotated optical direction would still let it see the fingertips. This seems promising for regrasping the dropped bar. The current left quaternion is approximately [0.627, -0.327, 0.327, 0.627], with a 35° transport tilt. Its dot product with the alternative quaternion is 0.3135 - 0.1635 + 0.1635 - 0.3135 = 0, giving an orientation distance of π, about 3.14 rad. Negating the alternative quaternion to [-0.5, -0.5, -0.5, 0.5] represents the same rotation and still gives a zero dot product. I therefore need intermediate rotations below the 1.0 rad command limit. A gradual 180° yaw might take about 20 control steps and could also improve the arm’s joint configuration for placement. I considered an intermediate 90° yaw quaternion, perhaps [0.5, 0.5, -0.5, 0.5], but I should calculate the sequence rather than rely on that tentative value. The left arm is open and empty at [-0.06, -0.088, 1.098] m. I’ll compute spherical linear interpolation from its current orientation to the alternative downward orientation at fractions 0.25, 0.5, 0.75, and 1, with each segment about 0.785 rad. I can align over the bar at [-0.025, -0.05, 1.04] m; the estimated displacement is [0.035, 0.038, -0.058] m, or about 0.077 m, within the 0.25 m limit. I’m considering four calls of five control steps each to rotate and align while the right arm continues placing the red pepper. Alternatively, I could retain the existing yaw and use the high and right wrist cameras for alignment despite low-height occlusion, but the new camera position may improve the grasp. There are about 585 control steps remaining for the held red pepper, the yellow pepper, and the last bar. Roughly 150 steps per object plus the reset seems affordable. My next planned motion is to continue the right pepper toward [0.22, -0.12, 1.04] m while the left arm moves to the bar hover pose with the first interpolation fraction of 0.25. First, I’ll use SciPy to calculate the quaternion sequence from the current measured left orientation to the alternative downward orientation.

The spherical interpolation path looks unusual because the left wrist starts tilted. At fraction 0.25, the wxyz quaternion is approximately [0.770, -0.110, 0.493, 0.388]. I’m unsure where local +X points at this intermediate orientation; the fingers may tilt away, but I judge the high hover position clear of collisions. Each interpolation segment is about 0.785 rad. I’ll target the left arm at [-0.025, -0.05, 1.04] m with the fraction-0.25 orientation and its gripper open. The right arm will carry the pepper toward [0.22, -0.12, 1.04] m with the 35° transport tilt and its gripper closed. I’ll use six control steps.

The right pepper appears over the front-left of the red basket, so I’ll continue toward its target. The left wrist camera may show the blue basket at an angle, with the dropped bar at the bottom right. The left wrist has not reached the first spherical interpolation target after six steps; its measured wxyz quaternion is [0.69, -0.255, 0.389, 0.554]. I could skip ahead to interpolation fraction 0.5 if its orientation distance from the measured pose is within the 1.0 rad command limit. Using the normalized current quaternion and the approximate fraction-0.5 quaternion [0.797, 0.122, 0.584, 0.09], the dot product is 0.69 × 0.797 + (-0.255) × 0.122 + 0.389 × 0.584 + 0.554 × 0.09 ≈ 0.55 - 0.031 + 0.227 + 0.05 = 0.796. The resulting angle, 2 acos(0.796), is about 1.3 rad, exceeding the limit. For fraction 0.25, the dot product is 0.69 × 0.771 + (-0.255) × (-0.110) + 0.389 × 0.493 + 0.554 × 0.388 ≈ 0.532 + 0.028 + 0.192 + 0.215 = 0.967, giving an angle of about 0.515 rad. I’ll therefore continue toward fraction 0.25 before advancing to fraction 0.5, rather than assuming each original 0.785 rad interpolation segment remains within the limit from the measured pose. I’ll continue the right arm toward [0.22, -0.12, 1.04] m while the left completes its first rotation target, using five control steps.

The right end effector is at x = 0.22 m, y = -0.12 m, with the held red pepper over the front-left of the right basket. I’m considering a final placement pose at x = 0.20 m, y = -0.03 m, z = 0.95 m with the 35° tilt. This would put the pepper’s estimated center at x = 0.20 m, y = 0.045 m, to the left of the existing red pepper at x = 0.28 m. I’ll first target [0.20, -0.03, 1.0] m, then lower toward z = 0.93 m. This requests a slight leftward change from x = 0.22 m to 0.20 m and a +0.09 m change in y. With the 35° tilt, I estimate the pepper’s bottom at 1.04 − 0.132 = 0.908 m currently and at 0.868 m for the z = 1.0 m target, clear of the rim. The left wrist still needs to reach interpolation fraction 0.25 before advancing to fraction 0.5. Its current wxyz quaternion is [0.732, -0.193, 0.437, 0.485]. My approximate dot product with the fraction-0.25 quaternion is 0.564 + 0.021 + 0.215 + 0.188 = 0.988, giving an orientation distance of about 0.312 rad. For fraction 0.5, the approximate dot product is 0.583 − 0.024 + 0.255 + 0.044 = 0.858, giving about 1.07 rad, slightly above the 1.0 rad command limit. I could use a halfway spherical interpolation from the current orientation toward fraction 0.5, but completing fraction 0.25 first is simpler. I considered three steps for the left rotation and six for the combined placement motion. I’ll use four steps now, keeping the empty left gripper open near its current position and targeting the fraction-0.25 orientation, while moving the right arm to [0.20, -0.03, 1.0] m with the pepper grasp maintained.

I’ll continue moving the right arm to its hover target at [0.20, -0.03, 1.0] m, then lower the held pepper for placement. The left wrist is now close to the orientation at interpolation fraction 0.25; its current quaternion’s w component is 0.758, compared with approximately 0.771 for that target. Can I advance directly to fraction 0.5? The approximate quaternion dot product is 0.604 - 0.017 + 0.276 + 0.038 = 0.901, giving an orientation distance of about 0.903 rad, below the 1.0 rad command limit. I can therefore target the fraction-0.5 orientation now. I’ll use five control steps, keeping the left gripper open during the rotation and the right gripper closed while it finishes moving to the hover target.

The red pepper fills much of the right wrist view over the right basket, but its bottom may still be above the floor. I’ll lower the right end-effector target to z = 0.93 m. The left wrist’s measured wxyz quaternion is [0.784, -0.074, 0.511, 0.346]. The target at interpolation fraction 0.5 is approximately [0.797, 0.123, 0.584, 0.09]. My approximate dot product is 0.625 - 0.009 + 0.298 + 0.031 = 0.945, giving an orientation distance of about 0.679 rad, within the command limit. I’ll continue toward that orientation. I considered lowering the right arm only to z = 0.95 m, but I’ll use z = 0.93 m, a requested descent of 0.07 m, and execute five control steps for both arms.

The right gripper’s opening command decreased from 0.41 to 0.296, which I suspect is due to the pepper contacting the basket. It may already be on the floor. At the measured end-effector height of z = 0.948 m and an estimated tilt of about 36°, I estimate the pepper’s bottom at z = 0.815 m, still about 5 cm above the estimated floor at z = 0.765 m. Contact with the rim or the other pepper could instead explain the opening change. It appears to be inside the red basket, but its support is uncertain: the wrist view shows the basket floor behind it and the pepper’s bottom near image y = 390 pixels, while the first pepper is out of view to the right. I’ll lower the right arm toward z = 0.93 m for three control steps before releasing it. The left wrist’s measured wxyz quaternion is [0.798, -0.007, 0.542, 0.262], close to the interpolation-fraction-0.5 target of approximately [0.797, 0.123, 0.584, 0.09]. I estimate about 0.35 rad of rotation remains. During the same three-step action, I’ll continue toward that orientation with the left gripper open, while keeping the right pepper grasp closed.

The right end effector is at z = 0.941 m rather than the commanded z = 0.93 m, which I attribute to contact with the basket support. Its gripper opening command is 0.204, and the pepper is likely resting on the floor, so I’ll release it now. The left wrist is near the orientation at interpolation fraction 0.5. Could I advance to fraction 0.75, whose approximate wxyz quaternion is [0.702, 0.337, 0.587, -0.222]? My approximate dot product with the current orientation is 0.563 + 0.011 + 0.328 - 0.047 = 0.855, giving an orientation distance of 1.085 rad, above the 1.0 rad command limit. I’ll therefore finish moving to the fraction-0.5 orientation before advancing to fraction 0.75. I’ll use three control steps to release the right pepper while holding the right arm’s pose steady and continuing the open left wrist toward the fraction-0.5 orientation.

The right gripper has released the second red pepper. I’ll retract it to [0.20, -0.03, 1.05] m with a 35° tilt and the gripper open, clearing the basket before approaching the yellow pepper. The left wrist is almost at the orientation for interpolation fraction 0.5, so I’ll continue toward that orientation with its gripper open. I’ll use five control steps for both arms.

The left wrist has reached the orientation at interpolation fraction 0.5, and the dropped bar is visible to the right, with its long axis vertical in the image. I’ll continue through fraction 0.75 toward the alternative downward orientation; further camera rotation will change the bar’s apparent position. The right arm has retracted only to z = 0.99 m, but I estimate its fingertips are at z = 0.86 m, clear of the basket rim. Its measured position is [0.203, -0.031, 0.99] m. I briefly considered whether the yellow pepper’s y coordinate might now be around -0.25 m after the collisions. However, its high-camera position still appears near pixel (320, 285), which gives y ≈ -0.214 m using an assumed z = 0.8 m plane. It appears upright again; perhaps it was previously occluded rather than toppled. I’ll use the downward-oriented hover target [0, -0.214, 1.02] m. I initially estimated the direct target distance at 0.248 m, but the displacement components [-0.203, -0.183, +0.03] m give about 0.275 m, exceeding the 0.25 m command limit. I’ll first use [0.10, -0.13, 1.02] m as an intermediate pose, with an estimated target distance of 0.143 m. The left arm is near [-0.025, -0.05, 1.04] m, about 0.154 m from that proposed right-arm intermediate pose. Both grippers are open and empty, so I judge roughly 0.15 m of arm separation sufficient for this motion, although they will approach each other. Later, the right arm will be toward the front over the yellow pepper while the left remains near the basket and dropped bar. I’ll use six control steps to move the right arm to the intermediate hover pose with a downward orientation while rotating the left wrist to interpolation fraction 0.75. The left orientation change from fraction 0.5 to 0.75 is about 0.785 rad, within the command limit.

The left target at interpolation fraction 0.75 failed the precheck with a position error of about 6.5 mm, which I attribute to the wrist configuration. A slight position adjustment may help. I’ll try the closer, lower left hover position [-0.03, -0.06, 1.03] m while retaining the fraction-0.75 orientation. I’ll keep the right arm’s existing approach target unchanged and use five control steps. The adjusted target may pass the precheck.

The left wrist’s measured wxyz quaternion is [0.782, 0.187, 0.594, 0.001], still short of the interpolation-fraction-0.75 target, approximately [0.702, 0.337, 0.587, -0.222]. I estimate about 0.52 rad of rotation remains, so I’ll continue toward that target. The right arm moved only slightly while rotating, so I’ll also continue its intermediate approach toward the yellow pepper. I’ll use six control steps with both grippers open.

The right arm has not yet reached its intermediate target, and the yellow pepper is not yet visible in its wrist view. I’ll continue rotating the left wrist toward the orientation at interpolation fraction 0.75 and moving the right arm toward its intermediate approach pose, using six control steps.

The yellow pepper is now visible at the lower left of the right wrist view. Moving the right arm to xy = [0, -0.214] m should center it over the pepper. The left wrist has almost reached interpolation fraction 0.75; the dropped bar appears diagonally near the top center of its view, with the blue basket below. I’ll finish the left rotation toward the alternative downward wxyz quaternion [0.5, 0.5, 0.5, -0.5]. The angular separation from the fraction-0.75 orientation is about 0.785 rad. I’m considering a left position of [-0.03, -0.06, 1.03] m and how the alternative orientation affects the end-effector-to-grasp-center relationship. The fingers will still point downward, with the same xy alignment, while the camera will be in front and should show the bar centered. The left precheck might fail because of joint limits. A slightly adjusted position of [-0.04, -0.08, 1.03] m is an alternative. The dropped bar’s estimated center is xy = [-0.03, -0.04] m, and I had considered a hover alignment at xy = [-0.03, -0.05] m. The current left position, [-0.031, -0.062, 1.028] m, is close, so I’ll first hold that position while rotating and adjust if the precheck fails. The right target is [0, -0.214, 1.02] m with the downward orientation, an estimated distance of 0.154 m from its current pose. I’ll use six control steps for both arms, keeping both grippers open.

The left target was again rejected with a marginal position error, so no motion occurred. I’ll adjust the left hover position to [-0.04, -0.07, 1.02] m while retaining the alternative downward wxyz quaternion [0.5, 0.5, 0.5, -0.5]. This slight position change may pass the precheck. I’ll keep the right target unchanged at [0, -0.214, 1.02] m with its downward orientation, and use five control steps with both grippers open.

The wrists are close together again above the blue middle basket. The empty left wrist is still rotating while the right arm approaches the yellow pepper, and they appear almost to touch. Their measured end-effector positions are [-0.044, -0.067, 1.024] m on the left and [0.058, -0.169, 1.013] m on the right, with an estimated separation of 0.145 m. The open grippers are about 0.2 m across, so their fingers may overlap. In the high-camera view, the left fingers appear near pixel (285, 225) and the right near (350, 220). That 65-pixel separation may be acceptable, but the wrists remain close. I could keep the left wrist in place and continue the right arm toward the yellow pepper at xy = [0, -0.214] m. This moves the right arm forward and leftward, toward the left arm’s x coordinate but farther away along y. I estimate a final x separation of 0.044 m and y separation of 0.147 m, giving a distance of about 0.154 m, similar to the current separation. Contact would still be possible. The left arm will eventually descend toward the bar near the blue basket while the right grasps the yellow pepper, so I should use cautious, shorter actions and monitor clearance. A better option is to move the empty left wrist farther left while finishing its rotation. I’ll target [-0.08, -0.06, 1.04] m with the alternative downward wxyz quaternion [0.5, 0.5, 0.5, -0.5], moving it left and upward. The dropped bar’s estimated center is at x = -0.03 m, so I can realign the left hover position after the rotation. The right target remains [0, -0.214, 1.02] m with its downward orientation. I estimate the separation between those targets as sqrt(0.08² + 0.154²) = 0.173 m, which gives more room. The left target may pass the precheck. I’ll use five control steps with both grippers open. This postpones the bar alignment, but I judge it safer.

The yellow pepper is now centered under the right gripper, and the left wrist has moved away, giving the arms more separation. The left wrist’s measured wxyz quaternion is [0.627, 0.416, 0.561, -0.346], still short of the alternative downward target [0.5, 0.5, 0.5, -0.5]. Their approximate dot product is 0.3135 + 0.208 + 0.2805 + 0.173 = 0.975, giving about 0.45 rad of rotation remaining. I’ll finish the left rotation at the position target [-0.08, -0.06, 1.04] m while beginning the right gripper’s descent toward z = 0.96 m above the yellow pepper. I’ll use three control steps with both grippers open.

The left wrist has not yet reached the alternative downward orientation; joint limits may be slowing its progress, but I can continue toward the same target. I’ll retain the left position target of [-0.08, -0.06, 1.04] m and the wxyz orientation [0.5, 0.5, 0.5, -0.5]. The right end effector is at z = 0.986 m and needs to descend toward the yellow pepper’s grasp height of z = 0.926 m. I’ll use four control steps for both arms, keeping both grippers open.

The right end effector is at z = 0.939 m, and the yellow pepper appears large in the wrist view. I’ll lower the right arm toward its grasp-height target of z = 0.926 m over two control steps. The left wrist is almost at the alternative downward orientation, so I’ll continue toward that orientation during the same two-step action, keeping both grippers open.

I’ll close the right gripper around the yellow pepper for three control steps. The left wrist has essentially reached the alternative downward orientation, with an orientation difference of about 0.04 remaining. In the left wrist view, the dropped bar appears horizontal near pixel (145, 120), at the upper left. The open fingers may be at the bottom left and right of the image. The camera now looks from the front toward +y and downward, with the bar appearing above the blue basket rim. The current left end-effector position is [-0.08, -0.062, 1.039] m, and the dropped bar’s estimated world xy coordinates are [-0.03, -0.04] m. With local +X pointing downward, the end-effector xy coordinates should match the object’s center. The current x coordinate is too far left, so a tentative alignment target is x = -0.03 m, y = -0.04 m. Would moving there center the bar in the image? I’ll first unproject pixel (145, 120) using the current camera calibration and an assumed bar height of z = 0.765 m to estimate its world position. Once that is calculated, I can combine the left alignment with the three-step right-gripper closure.

The unprojection puts the bar’s center near world x = 0.007 m, y = -0.063 m, rather than my previous estimate of [-0.03, -0.04] m. Could pixel (145, 120) be the wrong center? In the current left wrist view, the bar spans approximately x = 40–250 and y = 90–145 pixels, giving a center near (145, 117), so that selection seems reasonable. I estimate the dropped bar’s center at x = 0.007 m, y = -0.064 m. The earlier high-camera selection at (305, 215) gave x = -0.034 m, y = -0.03 m, which is substantially different. Perhaps the actual high-camera center is nearer (322, 222). Looking again at obs_000587, the dropped bar appears partly occluded beneath the left gripper, around (320, 225), with a visible portion near (319, 228). My old pixel selection at (305, 215) was its front red end rather than its center. I now estimate the high-camera center near (320, 226). At the assumed height of z = 0.765 m, that unprojects to approximately x = 0 m, y = -0.055 m, consistent with the wrist estimate of x = 0.007 m, y = -0.063 m. I’ll use [0.005, -0.064] m as the bar’s estimated center. The left end effector is currently at xy = [-0.08, -0.062] m, so its x coordinate is about -0.085 m relative to the estimated bar center, explaining why the bar appears left of center in the wrist view. I’ll move the open left gripper to [0.005, -0.064, 1.02] m, lowering it by 0.019 m. The estimated target distance is 0.086 m, within the command limit. The alternative orientation points local +X downward; the measured orientation is nearly there with a slight forward tilt, so I’ll target the exact wxyz quaternion [0.5, 0.5, 0.5, -0.5]. During the same three control steps, I’ll hold the right arm’s pose and close its gripper around the yellow pepper.

The left arm may have difficulty reaching across its body toward positive x with the alternative downward orientation. I’ll use smaller steps, first targeting x = -0.05 m and then x = -0.02 m. Its current x coordinate is -0.08 m, so the first target requests a +0.03 m change in x. For this action, I’ll target the open left gripper at [-0.05, -0.064, 1.02] m with the alternative downward wxyz quaternion [0.5, 0.5, 0.5, -0.5], while holding the right arm steady and closing its gripper around the yellow pepper. I expect this shorter target will likely pass the precheck. I’ll use three control steps.

The dropped bar’s center appears near pixel (190, 150) in the left wrist view, still left of the gripper center at image x = 320. I need to move the left arm rightward toward the estimated bar-center x coordinate of 0.005 m. From its current x = -0.051 m, I’ll use an intermediate target of [-0.025, -0.064, 1.02] m, requesting a +0.026 m change in x while keeping the gripper open. The right gripper has been commanded closed around the yellow pepper and reports an opening command of 0.419, but the grasp still needs a test lift. I’ll target its height at z = 0.977 m while keeping its orientation steady and gripper commanded closed. I’ll use three control steps for both arms.

The yellow pepper is held after the test lift. The dropped bar’s center now appears near pixel (235, 160) in the left wrist view, so the left arm needs to move farther right. Its current end-effector xy position is [-0.031, -0.069] m, and the target xy position is [0.005, -0.064] m, about 0.036 m away and within the command limit. The earlier full centering move failed from x = -0.08 m; this shorter move from x = -0.031 m should pass the precheck. I’ll target the open left gripper at [0.005, -0.064, 1.02] m with the alternative downward orientation, while raising the held right pepper to z = 1.06 m with a 35° transport tilt. I considered five control steps and will use that length: the right arm is navigating, and the left alignment is not yet near contact.

The repeated precheck error of 19.185 mm for the target x = 0.005 m suggests that the left arm cannot reach positive x with this alternative wrist orientation, possibly because of joint 1’s limit. I should not force the move. An off-center grasp at x = -0.02 m would be 25 mm left of the estimated bar center at x = 0.005 m and might still grip its left half securely. The bar’s image center is at x = 235 pixels rather than the gripper midpoint at 320 pixels. I could also lower at the current x = -0.031 m and inspect the alignment. However, the closing direction is a more important problem. With the alternative wxyz quaternion [0.5, 0.5, 0.5, -0.5], local Y points along world +x. The dropped bar’s long axis appears horizontal in the wrist image and along world x, so the fingers would close along its length. That would require a gap of about 0.12 m, beyond the maximum opening, and may explain why the earlier grasp near its end slipped. I should rotate the gripper’s yaw by ±90° so it closes along world y, across the bar’s width. I chose the alternative orientation to put the camera in front of the basket. Rotating it 90° about world z would move the camera offset to the side, perhaps world -x, rather than the front. With no y offset, it should still avoid the blue basket rim. A downward orientation with wxyz quaternion [0.707, 0, 0.707, 0] is another candidate: its local X points along [0, 0, -1], local Y along [0, 1, 0], and local Z along [1, 0, 0]. I still need to check whether its camera offset would be toward +x or -x, with the downward z offset. Either side view could provide clearance from the rim. The dot product between [0.707, 0, 0.707, 0] and the alternative quaternion is 0.3535 + 0 + 0.3535 + 0 = 0.707, giving an orientation distance of 1.571 rad, so I need an intermediate orientation. Negating the candidate to [-0.707, 0, -0.707, 0] represents the same rotation. I can instead calculate the target directly as R_z(+90°) multiplied by the alternative orientation. I am treating the alternative as the base orientation with 180° yaw, so adding 90° gives 270° yaw and should turn the closing direction from +x to either -y or +y; I’ll verify the sign. The resulting quaternion might be [0, 0.707, 0.707, 0], but I should calculate it rather than rely on that estimate. The empty left gripper is currently at [-0.031, -0.069, 1.017] m, above the bar, and I judge the rotation clear of obstacles. A 90° rotation can be divided into two orientation increments of about 0.785 rad each. With the camera moved to the side, the bar should appear vertical rather than horizontal, and perhaps centered. This should provide a more stable grasp for placement near the blue basket. The right arm can continue raising the held yellow pepper while the left wrist rotates. I’ll use SciPy to calculate the target orientation, its closing vector, and a spherical-interpolation midpoint before commanding the motion.

The calculated target orientation points the fingers downward and closes along world y, as expected. The intermediate wxyz quaternion is approximately [0.653, 0.271, 0.653, -0.271], about 0.785 rad from the left gripper’s current alternative downward orientation. I’ll rotate the empty left gripper to this intermediate orientation near its current position while raising the held yellow pepper with the right arm toward z = 1.06 m and a 35° transport tilt. I’ll use six control steps.

The left gripper has not reached its intermediate rotation target. Its measured wxyz quaternion is [0.562, 0.443, 0.566, -0.409], compared with the target [0.653281, 0.270598, 0.653281, -0.270598], and its position has moved slightly. I’ll continue toward that intermediate orientation. The right pepper lift is also only partly complete. Its measured wxyz quaternion, [0.576, -0.444, 0.409, 0.552], is not a simple transport tilt, possibly because of joint constraints, but the pepper remains held. I’ll continue raising the right arm toward z = 1.06 m with the 35° transport tilt, while continuing the left gripper’s intermediate rotation. I’ll use six control steps, keeping the left gripper open and the right gripper closed.

The left end effector unexpectedly rose to z = 1.071 m despite the target height of 1.02 m. I attribute this to joint reconfiguration; the gripper is empty, so that is acceptable. The right wrist’s measured wxyz quaternion is now [0.628, -0.388, 0.33, 0.588], rather than the intended 35° transport tilt, but the yellow pepper remains held. I could transport it with the current orientation instead of continuing to force the tilt. For the yellow pepper, I’m considering a final right end-effector target of [0.36, -0.03, 1.02] m on the right side of the basket, with the existing red peppers at x = 0.28 m and x = 0.20 m. The right arm is currently at x = 0.002 m, y = -0.213 m, so it needs to move rightward in segments. Should I retain its measured orientation or command the 35° tilt? The measured orientation differs from the target, and I could calculate the local +X forward direction to check the pepper’s clearance. The right gripper appears high above the yellow pepper near image pixel (320, 180), but the object’s bottom height and the precise forward tilt remain uncertain. One option is to retain the current quaternion while moving to [0.15, -0.15, 1.04] m, within the 0.25 m command-distance limit, then continue toward xy = [0.30, -0.03] m. The orientation may change as IK proceeds. I could also command the 35° tilt again during transport; it might reach that orientation as the joint configuration changes. Moving toward the right arm’s own side should avoid the earlier cross-body reach issue. I’ll use the 35° tilt for the proposed intermediate transport target [0.15, -0.15, 1.04] m. The left wrist has not reached its intermediate rotation target. Could I command the final downward, world-y closing orientation directly? Using the measured wxyz quaternion [0.616, 0.399, 0.620, -0.277] and the final quaternion [0.707, 0, 0.707, 0], I estimate their dot product as 0.435 + 0 + 0.438 = 0.873, giving an orientation distance of about 1.055 rad, slightly above the 1.0 rad command limit. For the intermediate quaternion [0.653, 0.271, 0.653, -0.271], the estimated dot product is 0.402 + 0.108 + 0.405 + 0.075 = 0.99, giving about 0.28 rad of remaining rotation. The measured wrist is therefore close to that intermediate orientation. Instead of continuing toward the old intermediate target, I’ll calculate a spherical-interpolation midpoint from the measured left orientation to the final orientation. I estimate that halfway rotation at about 0.525 rad, then I can proceed to the final orientation. A possible left hover position above the bar is [-0.02, -0.06, 1.04] m. With its current height of 1.071 m and x = -0.061 m, I’ll instead use [-0.03, -0.064, 1.04] m with the halfway orientation, estimating the move to be within 0.14 m. I’m planning six control steps for that motion and the right pepper’s intermediate transfer. First, I’ll use Python to calculate the left midpoint quaternion from the measured pose.

The calculated orientation distance from the measured left wrist pose to the final widthwise grasp orientation is 1.015 rad, just above the 1.0 rad command limit. I’ll use the halfway orientation, with approximate wxyz quaternion [0.683, 0.206, 0.685, -0.143], and target the open left gripper at [-0.03, -0.064, 1.04] m. At the same time, I’ll move the right arm holding the yellow pepper to [0.15, -0.15, 1.04] m with the 35° transport tilt and its gripper closed. I’ll use six control steps.

The right arm is moving very slowly, apparently because of its orientation and arm constraints, but I can continue its approach. The left wrist’s measured wxyz quaternion is [0.653, 0.325, 0.656, -0.194]. Its approximate dot product with the final widthwise grasp quaternion is 0.462 + 0 + 0.464 = 0.926, giving an orientation distance of about 0.777 rad, below the 1.0 rad command limit. I can now target that final orientation directly. I’ll target the open left gripper at [-0.03, -0.064, 1.04] m with the final orientation. The right arm will continue toward [0.15, -0.15, 1.04] m with the 35° transport tilt and its pepper grasp maintained. I’ll use six control steps.

The combined left position and orientation target failed the precheck without motion. I need to adjust the position or use an intermediate orientation. I could instead hold the left arm at its measured position of [-0.049, -0.064, 1.06] m and request only the final widthwise grasp orientation. An earlier rotation to the alternative downward orientation at a fixed position was marginally rejected, so this may or may not pass. I’ll try the final orientation at the left arm’s current position while the right arm continues carrying the yellow pepper toward its existing target. I’ll use five control steps.

I’ll calculate an intermediate orientation halfway between the left wrist’s measured orientation and the final widthwise grasp orientation, then try it at the same position. Using my estimated remaining angle of 0.777 rad, the halfway rotation would be about 0.389 rad. Could the current orientation already be adequate? Its closing direction may be near world +y, so I’ll calculate that direction as well, though I favor the halfway orientation. I also considered holding the left arm at its measured pose and transporting the yellow pepper with the right arm alone to avoid another left-arm precheck rejection, then adjusting the left wrist afterward. For now, I’ll calculate the midpoint quaternion and current closing direction before choosing the next motion.

The left gripper’s current closing-direction vector is approximately [0.679, 0.714, 0.171] in the environment frame. It is not horizontal because the fingers are not pointing exactly downward, so I still want to reach the final widthwise grasp orientation. I’ll use the intermediate wxyz quaternion [0.693, 0.166, 0.694, -0.099] at the left arm’s current position while the right arm continues carrying the pepper toward its basket. I’ll use five control steps.

The left intermediate rotation was marginally rejected with a position error of 5.43 mm. A slight position adjustment may ease the kinematics; a previous adjustment worked. I’ll target the empty left gripper at [-0.06, -0.08, 1.04] m while retaining the intermediate orientation, and keep the right arm moving toward its existing target with the pepper held. I’ll use five control steps.

The right end effector is now at x = 0.105 m, y = -0.17 m, and the yellow pepper appears near high-camera pixel (400, 188), close to the front of the red right basket. The arm has not yet reached its previous xy target of [0.15, -0.15] m. I’m considering a final placement target of [0.36, -0.03, 1.0] m, but I estimate its distance from the current pose at 0.298 m, exceeding the 0.25 m command limit. I’ll first use the intermediate target [0.25, -0.12, 1.04] m, about 0.154 m away, then continue to the final target. Moving toward the right arm’s own side should be easier. The left wrist’s measured wxyz quaternion is [0.674, 0.256, 0.676, -0.153]. Its approximate dot product with the final widthwise grasp quaternion is 0.476 + 0.478 = 0.954, giving an orientation distance of about 0.61 rad. The final orientation may now pass the precheck with a slight position adjustment to [-0.06, -0.08, 1.04] m. I’ll try that left target with the gripper open while moving the right arm to [0.25, -0.12, 1.04] m with the pepper grasp maintained. I’ll use six control steps and inspect whether the precheck accepts these targets.

The right wrist view shows two red peppers on the left and right of the basket, with the held yellow pepper in front. There may be an open space between them toward the center/front. I had planned to place the yellow pepper at x = 0.36 m, but one red pepper appears to occupy the right side near x = 0.35 m and the other the left side near x = 0.20 m, leaving a gap around x = 0.28 m. Their wrist-image positions are approximately (340, 40) and (550, 120), although the tilted camera makes their world-x positions uncertain. I could place the yellow pepper at the front center, around x = 0.28 m and y = -0.005 m, or farther back. With the 35° tilt, I estimate the object center at end-effector y + 0.075 m. Placing its center at y = 0 m would therefore require an end-effector target of [0.28, -0.075, 1.0] m. The red peppers may have centers near y = 0.05 m. With an estimated yellow-pepper radius of 0.04 m, the 0.05 m separation in y could allow slight overlap, though it might remain stable. Another option is an object center at [0.28, -0.01] m in xy; its estimated distances from red-pepper centers at x = 0.20 m and 0.35 m, y = 0.05 m, would be about 0.09 m and 0.08 m, which seems safe. However, the basket’s estimated front inner edge is at y = -0.02 m, and a center at y = -0.01 m with radius 0.04 m would extend to y = -0.05 m, potentially overlapping the front wall. It could lean against the wall, but I favor placing its center at y = 0.03 m instead. I’ll target the right end effector at [0.28, -0.045, 1.0] m, putting the estimated yellow-pepper center at x = 0.28 m, y = 0.03 m, between the red peppers. Their estimated y coordinate is 0.05 m, with about 0.08 m of separation along x, which looks adequate. I estimate the yellow pepper’s bottom at z = 0.868 m, clear of the rim. From the current right end-effector xy position of [0.187, -0.143] m, I estimate the target distance at 0.136 m, within the command limit. After centering it, I’ll lower the end effector toward z = 0.93 m. This replaces the earlier far-right placement at x = 0.36 m. Meanwhile, I’ll continue the left wrist toward its final widthwise grasp orientation at position [-0.06, -0.08, 1.04] m. Its current wxyz quaternion is [0.696, 0.144, 0.698, -0.087], and I estimate 0.424 rad of rotation remains to the final orientation. I’ll use six control steps, keeping the left gripper open and the right pepper grasp closed.

The right end effector is at x = 0.255 m, y = -0.073 m and has not yet reached the intended xy target of [0.28, -0.045] m. I’ll continue toward that position and consider lowering it for placement. The left wrist’s measured wxyz quaternion, [0.706, 0.029, 0.707, -0.017], is almost at the final downward orientation that closes along world y. Its end-effector position is [-0.061, -0.081, 1.039] m. In the left wrist view, the bar appears vertical near the top center, initially around pixel (300, 30), with the blue basket to the left. It seems to extend from approximately (290, 0) to (320, 95), so its center may be near (300, 45), although part of it is cut off. The previous view suggested a bar-center position of approximately [0.005, -0.064] m in world xy coordinates. I’m treating the dropped bar as stationary during the wrist rotations. That would suggest an end-effector xy target of [0.005, -0.064] m, but can the left arm reach positive x with this new orientation? It may be easier than with the alternative downward orientation because the joint 1 configuration is different. I should localize the bar again using the current camera before choosing the alignment target. What is the wrist camera’s offset in the environment frame with this orientation? I’ll read its current calibration and unproject the estimated bar-center pixel (300, 40) onto an assumed plane at z = 0.765 m. That will give me a position estimate to use for the next target. After the calculation, I’m planning a five-step action with the right target at [0.28, -0.045, 0.95] m to continue the yellow-pepper placement, while aligning the left arm to the newly estimated bar position. For now, I’ll calculate the left camera origin and the bar-position estimates.

The current left wrist camera origin is approximately x = -0.010 m, y = -0.083 m, z = 0.954 m, with an offset of about +0.05 m along world x. The new view estimates the bar’s world xy center near [-0.02, -0.07] m rather than the previous [0.005, -0.064] m. The discrepancy may come from inaccurate pixel selection where the bar was partly cut off. It appears at the top of the image spanning x = 270–330 pixels, with a center near (300, 45), giving an estimated world xy position of [-0.022, -0.072] m. This estimate seems likely to be accurate. The earlier front view gave x = 0.007 m, but perhaps pixel x = 145 was not actually the center. I’ll target the open left gripper at [-0.02, -0.071, 1.02] m with the downward orientation that closes along world y. From its measured position of [-0.061, -0.081, 1.039] m, I estimate the target distance at about 0.045 m, within the command limit. Keeping x negative also makes this target likely to be reachable. At the same time, I’ll lower the held yellow pepper with the right-arm target [0.28, -0.045, 0.95] m, retaining the 35° transport tilt and closed gripper. I’ll use five control steps for both arms.

The right end effector is at z = 0.953 m, with the yellow pepper’s bottom estimated at z = 0.82 m, still 55 mm above the basket floor at z = 0.765 m. I considered lowering the arm to z = 0.93 m or 0.92 m. I’ll target z = 0.93 m for three control steps, then release the pepper afterward. The bar appears vertical in the left wrist view near pixel (290, 80), extending beyond the top of the frame. I’m still checking its alignment with the gripper axis. The fingertip midpoint may still project to (320, 275), even with the changed camera orientation that closes along world y. The left end-effector height is z = 1.018 m, while the assumed bar height is z = 0.765 m, a difference of 0.253 m. I estimate the fingertip height at about z = 0.860 m, but briefly wonder whether the bar being below the fingertips could give a negative projection. The fixed fingertip projection still seems likely to be (320, 275). My approximate bar-center estimate is (300, 80). Lowering the left arm toward z = 0.923 m should bring that center toward image y = 275. The measured left alignment is x = -0.026 m, y = -0.076 m, and the bar’s image x coordinate near 290 looks close enough to continue the descent. I’ll first target a left height of z = 0.96 m while lowering the right arm to z = 0.93 m, using three control steps for both arms.

The right end effector is at z = 0.945 m, and its gripper opening command has increased to 0.442. The yellow pepper may be touching the basket bottom or another red pepper and is likely supported. I could release it at this height with a small drop, as I did earlier for the red pepper at z = 0.941 m. I’ll open the right gripper while holding its current position and measured orientation to avoid forcing it farther. At the same time, I’ll continue lowering the open left gripper toward z = 0.96 m for the last bar. I’ll use three control steps for both arms.

The yellow pepper has been released and is stable between the red peppers. Only the last chocolate bar remains on the table. The left arm descended only 0.001 m during the last three steps despite its target height of z = 0.96 m; its measured height is still z = 0.998 m. Its measured wxyz quaternion has drifted to [0.716, 0.013, 0.698, 0.016]. Could a near-singular configuration, joint limits, or contact be preventing descent? The left camera shows the blue basket wall on the left and the bar above it, so contact with the rim is a possibility. The camera may instead be positioned to the side, with an x offset of about +0.05 m; I am unsure of its y position. The exact downward orientation that closes along world y has repeatedly passed the precheck without producing the intended descent. Although the measured orientation differs only slightly from that target, the controller may be unable to maintain the exact orientation because of a joint limit. I’ll try descending with the measured orientation held steady instead, targeting the left position [-0.025, -0.072, 0.96] m with quaternion [0.716, 0.013, 0.698, 0.016]. At the same time, I’ll retract the open right gripper to z = 1.05 m so it can remain clear. I’ll use five control steps with both grippers open. If the left arm remains stuck, I’ll try a modest orientation change.

The current left orientation may have a finger-forward vector of [0.078, 0.08, -0.994]. Applying a -20° rotation about world y gives a forward vector of [0.389, 0.083, -0.917]. The closing direction has a z component of 0.075, so it retains a slight tilt already present in the measured orientation. That seems acceptable. I’ll first use the smaller -15° rotation, about 0.26 rad, and target the open left gripper at [-0.06, -0.072, 0.98] m. An estimated contact offset of 0.13 m gives a horizontal offset of 0.13 × sin(15°) ≈ 0.034 m, placing the estimated object center near x = -0.026 m. Moving the end effector from its current x = -0.029 m to x = -0.06 m shifts it left to accommodate that offset. I’ll also move the empty right arm to an intermediate pose toward its initial configuration. I’ll use five control steps for both arms.

The left gripper has only partly completed its tilt, and the bar appears vertical in the wrist view, centered near pixel (360, 150). The measured wxyz quaternion is [0.781, 0.025, 0.623, 0.033], close to the -15° tilt target of approximately [0.808, 0.023, 0.587, 0.035]. Perhaps only about 0.08 rad of rotation remains. I’ll continue toward that orientation while descending. The arm is also nearly at the previous position target of [-0.06, -0.072, 0.98] m. With the 15° tilt, I estimate the grasp-center offset along world x at +0.034 m. The current end-effector x coordinate of -0.051 m therefore puts the estimated grasp center near x = -0.017 m, which looks suitable. I estimate the fingers’ vertical extent at 0.152 m. At an end-effector height of z = 0.93 m, the tips would be at z = 0.778 m, 13 mm above the assumed tabletop at z = 0.765 m. Lowering the end effector to z = 0.92 m would put the tips near z = 0.768 m, so I’ll use 0.92 m as the eventual grasp height. From the current height of z = 0.986 m, I’ll first target the open left gripper at [-0.06, -0.072, 0.95] m with the -15° tilt, then continue toward z = 0.92 m. The open right gripper will continue toward its return-area intermediate pose of [0.3, -0.2, 1.0] m with the initial orientation. I considered five steps, but this is the left arm’s final approach, so I’ll use three. The right arm may move only partway during that action.

The left end effector is at z = 0.967 m. In the wrist view, the bar spans approximately image y = 35–320 pixels, with its center near y = 180. I briefly wonder whether the tilt changes the fingertip midpoint’s projection, but since the camera is fixed to the gripper, I expect that midpoint to remain at pixel (320, 275). At an end-effector grasp height of z = 0.92 m, the bar’s center might reach image y = 275, or perhaps closer to y = 300. That seems suitable for contact. For this action, I’ll target the left end effector at z = 0.925 m and use three control steps, keeping its gripper open. The right arm will continue toward the same return-area target with its gripper open.

The bar now spans image y = 0–365 pixels in the left wrist view, but its estimated center remains near y = 182 rather than moving down much. As the arm descended 0.03 m, the visible bar length increased while its center stayed near y = 180 because the top is outside the frame; its actual geometric center may be nearer y = 190. I estimate the white bottom end at pixel (365, 365), the red top end at (350, 0), and their midpoint at approximately (357, 182). The fingertip midpoint is at (320, 275), so the estimated bar center is 93 pixels above it. Could the end effector be too far forward along the tilted direction? Lowering should bring the bar center toward the fingertips, but the simultaneous orientation change may have shifted the view. The orientation is now settled. Another descent to z = 0.92 m might bring the center closer, although that is only 0.017 m below the current height. I could close at the current end-effector height of z = 0.937 m, but I estimate the fingers’ vertical extent as 0.1576 × cos(15°) ≈ 0.152 m, putting the tips at z = 0.785 m—20 mm above the assumed tabletop at z = 0.765 m. That is likely too high. I’ll instead lower the left target to z = 0.917 m, which should put the tips near z = 0.765 m, keeping the gripper open. I’ll use three control steps while the open right arm continues toward its return-area target.

The left end effector is at z = 0.922 m. In the wrist view, the bar spans image y = 0–397 pixels, with an estimated center near y = 200 and its white bottom end at y = 397. The right fingertip appears near pixel (550, 275), while the left fingertip is outside the frame. The bar lies to the left of the right finger, with its center near image x = 350. I’m still uncertain how the local Y closing direction projects into this view. Could the open fingers appear above and below rather than left and right? The visible right finger occupies roughly image x = 500–640, while the left finger may be off-screen to the left behind the blue basket. The camera’s +x offset may explain one finger occluding the basket and the other appearing on the right. The bar seems to lie between the pads, so I’ll close now and hold for six control steps before lifting. For this call, I’ll use three steps of left-gripper closure while the empty right arm continues toward the same return target.

The left gripper’s opening command is 0.714 after three control steps, much larger than the roughly 0.3 reported during earlier closures. I interpret this as the fingers having farther to close because of the current orientation and gap, with closure still underway. I’ll hold the left arm at the same grasp pose and continue closing for another three steps without lifting, while the open right arm continues toward its return-area target.

The left opening command changed only from 0.714 to 0.666 over the last three steps, unlike the usual interpolation toward 0. Earlier closures went from 1 to about 0.4 after three steps and about 0.12 after six. Here it was 0.714 after three steps and 0.666 after six. Perhaps closure is being blocked by contact with the bar or basket wall, or the closed target has not yet been fully applied. The opening command is not a measured finger gap, so I should be cautious about interpreting it as a wide physical opening. The visible right finger moved slightly toward the bar, while the left finger may be behind the blue basket wall and touching it. The gripper is closing across the bar’s width along world y, and one finger may be blocked by the basket rim. The bar appears just outside the rim, possibly directly against the basket’s front wall with one finger on the other side. That could explain closure stalling at 0.666 without securing the bar. If the rim is interfering, I could gently push the bar forward, toward negative y, with one open finger, then retract and regrasp in clear space. Another option is to grasp a protruding end or approach from the other side. Since only one object remains and the right arm is free, switching to the right arm may be easier than continuing with the blocked left grasp. The right arm’s kinematics near the center may be better, and its camera might be less obstructed. It previously grasped a similar white bar successfully at x = 0.098 m, y = -0.123 m. There are 436 control steps remaining. I could open the left gripper, move that arm toward its initial configuration, and use the right arm for the last bar. The right end effector is currently at [0.296, -0.173, 1.002] m, with an open gripper and an orientation near its initial orientation. A downward hover target above the dropped bar at [-0.02, -0.07, 1.02] m is an estimated 0.327 m away, exceeding the 0.25 m command limit, so I would use an intermediate pose at [0.14, -0.12, 1.03] m. The bar’s proximity to the rim would still matter. With the basic downward orientation, the right gripper closes along world x, along the bar’s length, and one finger might still enter the basket. I could first push the bar forward to y = -0.16 m, clear of the rim. Using the closed right fingers as a paddle from behind the bar would require accessing the basket side, perhaps by moving over the blue basket. Alternatively, the left gripper is already around the bar and could open and move forward to push or drag it. I would prefer to avoid risking the basket. I also considered grasping the white sealed end visible near the bottom of the left wrist image, around image y = 390 pixels. Perhaps that end protrudes farther forward, at world y = -0.10 m compared with a center at y = -0.07 m. Rotating a downward gripper by 90° could allow a widthwise end grasp. The right arm could instead use about -30° of yaw, as in an earlier attempt, and target an end near y = -0.11 m. Its camera would then be near y = -0.06 m, in front of the rim. Returning to zero yaw and letting closure rotate the bar is another possibility. However, the apparent front end may be a misleading interpretation of the wrist view. I initially estimate the high-camera bar near pixel (320, 225), with a white end at (333, 231) and a red end at (307, 218). In obs_000664, it appears roughly horizontal near (320, 226), about 40 pixels long along image x. It looks vertical in the left wrist view because of the camera’s 90° yaw. Its long axis is therefore along world x, so its ends are left and right rather than front and back. The blue basket’s front rim is estimated at y = -0.03 m, the bar center at y = -0.07 m, and the bar’s width along y at about 0.02 m. I could select its right end around x = +0.03 m, closer to the right arm, though a basic downward grasp would still close along its length. A downward grasp with about -30° yaw might close across its diagonal width, as before. But at the center [-0.02, -0.07] m, a camera near y = -0.02 m could be occluded by the rim. With -30° yaw, its estimated +0.044 m y offset would put it near y = -0.026 m, still close to the rim. Moving the grasp target to y = -0.10 m would be 3 cm ahead of the center and could miss a bar only 0.02 m wide. Pushing it away from the rim or using a side grasp may therefore be necessary. Before choosing a recovery, I should check whether the current left closure is actually contacting the bar rather than the rim. The opening command has changed only 0.048 over the last three steps and may be stopping because of contact. I suspect rim contact, but a secure grasp remains possible. I’ll make a small test lift with closure maintained and see whether the bar follows. I’ll target the left end effector at z = 0.953 m for three control steps, holding its x and y coordinates and measured orientation steady. The right arm will hold its current measured position, [0.296, -0.173, 1.002] m, and orientation with its gripper open. If the bar stays on the table, I’ll open the left gripper and switch approaches. If it moves with the left gripper, I can continue with that grasp.

The bar remains on the table, so the left grasp failed. I’ll clear the left arm and use the right arm for recovery. There are 433 control steps remaining and only one object left. I could use the left gripper to push the bar away from the basket because it is already nearby, then grasp it with the right. The left opening command is 0.6 despite being commanded closed; opening it to 1 should release the rim. Simply switching arms may leave the same rim obstruction, so I should move the bar forward first. The bar lies just outside the blue basket’s front rim. A closed gripper behind the bar, toward +y, could push it forward toward -y. However, the left end effector is at [-0.062, -0.07, 0.952] m, tilted from the left, and the bar’s estimated center is [-0.02, -0.07] m in xy. One finger is to the bar’s right and the other is behind the basket wall. Using a finger’s outer side to push the bar leftward or forward from this pose would be difficult. I could instead use the closed right gripper as a narrow paddle from above. My initial idea is to place the fingertip center behind the bar at x = -0.02 m, y = -0.02 m, z = 0.92 m with the fingers pointing downward, then move slowly toward y = -0.12 m to push against its back edge. The right arm could approach high from the front, move behind the bar over the basket opening, and then descend. But with the downward orientation and an end-effector height of 0.92 m, I estimate the fingertips at z = 0.762 m, approximately at the assumed tabletop height of 0.765 m. Descending at y = -0.02 m could hit the basket’s front rim, estimated at y = -0.03 m and z = 0.84 m. The wall may span y = -0.04 to -0.02 m, so that vertical path could pass through it. A better candidate is behind the bar but in front of the rim, at y = -0.045 m, followed by a push toward y = -0.15 m. The bar center is estimated at y = -0.07 m and its back edge at -0.055 m, so a fingertip at -0.045 m would begin 0.01 m behind that edge. If the wall’s outer surface is at y = -0.04 m, this starting point would be just in front of it and might permit descent. Moving toward negative y could then contact the bar’s back edge and slide it away from the rim. I’ll consider a right end-effector push pose of [-0.02, -0.045, 0.925] m with the fingers pointing downward and the gripper closed. I can approach at z = 1.02 m, descend toward 0.925 m, and push toward y = -0.12 m using 1–3 control steps at a time. I’ll need to monitor the contact and sliding motion. If the bar reaches y = -0.14 m, it would have an estimated 0.11 m clearance from the rim and should be easier to grasp. The right end effector is currently at [0.296, -0.173, 1.002] m, with its gripper open and its orientation near the initial orientation. I estimate the distance to the hover pose above the push point, [-0.02, -0.045, 1.02] m, at 0.344 m, exceeding the 0.25 m command limit. I’ll use an intermediate position of [0.14, -0.10, 1.03] m. For the left arm, I considered moving toward [-0.3, -0.25, 1.05] m with the initial wxyz quaternion [0.707, 0, 0, 0.707]. From its current tilted orientation, my approximate quaternion dot product is 0.573 + 0 + 0 + 0.031 = 0.604, giving an orientation distance of about 1.85 rad, above the 1.0 rad limit. That would require an intermediate rotation. Instead, I can open the gripper and move up and back toward [-0.20, -0.20, 1.08] m while retaining its measured wxyz quaternion [0.811, 0.029, 0.583, 0.043], then return it later. I estimate this position target is 0.196 m away and within the command limit. It should clear the bar and blue basket, though it still needs to pass the precheck. I also considered a smaller initial clearance move to [-0.12, -0.15, 1.04] m, but I’ll favor [-0.20, -0.20, 1.08] m because it moves toward the left arm’s own side. I’m considering eight control steps for the clearance and right-arm approach. The right arm also needs an intermediate orientation before pointing downward. I initially wondered whether its rotation distance might be 2.09 rad. Using its measured wxyz quaternion [0.701, -0.095, 0.094, 0.7] and the downward target [0.5, -0.5, 0.5, 0.5], my approximate dot product is 0.350 + 0.047 + 0.047 + 0.35 = 0.794, giving about 1.31 rad. That exceeds the 1.0 rad command limit, so I cannot command the downward orientation directly. I’ll calculate a spherical-interpolation midpoint from the measured orientation to the downward target, estimating a halfway rotation of about 0.655 rad. I can use that orientation for the intermediate approach and finish rotating downward afterward.

I’ll use the right gripper’s intermediate wxyz quaternion of approximately [0.634, -0.314, 0.313, 0.633] and target position [0.14, -0.10, 1.03] m. I estimate that position is 0.177 m from its current measured pose, within the command limit. I’ll retract the left arm and use six control steps for both arms.

Both arms have moved partway toward their targets, but the left arm is still near the bar. I’ll continue clearing the left arm toward [-0.2, -0.2, 1.08] m and positioning the right arm at [0.14, -0.1, 1.03] m with its intermediate orientation for the planned forward slide. I’ll keep both grippers open and use eight control steps.

The right end effector’s x coordinate is still 0.221 m, short of its target at x = 0.14 m, so it needs to continue approaching the push setup. The left arm is almost at its clearance target. I could move it toward its initial configuration eventually, but I’ll leave that for later. I’ll continue toward the same targets for eight control steps, keeping both grippers open. The right target remains [0.14, -0.1, 1.03] m with its intermediate orientation, while the left arm finishes its clearance motion.

The right arm is nearly at its intermediate target and has reached the intermediate orientation. I’ll move it from its measured position of [0.171, -0.117, 1.019] m to the push hover pose at [-0.02, -0.045, 1.02] m, with the downward wxyz quaternion [0.5, -0.5, 0.5, 0.5]. I estimate the position change at 0.206 m and the orientation change at 0.65 rad, both within the command limits. I’ll hold the left arm at its current clear pose and keep both grippers open. I’ll use eight control steps to approach the hover pose, then set up the push to slide the bar forward away from the basket rim.

The direct move to the push hover pose was rejected without motion, so I’ll use a closer intermediate right-arm target at [0.08, -0.08, 1.02] m with the fingers pointing downward. From the measured right-arm coordinates of x = 0.171 m and y = -0.117 m, this requests changes of -0.091 m in x and +0.037 m in y. I’ll use six control steps while holding the left arm clear, then continue toward the push point.

The chocolate bar is visible near the bottom-left edge of the right wrist view as the arm approaches. I’ll continue toward the intermediate hover target at [0.08, -0.08, 1.02] m with the right gripper open and pointing downward, using six control steps.

The bar is visible at the left edge of the right wrist view, but the right gripper is not yet pointing downward. I could continue toward [0.08, -0.08, 1.02] m, then move to the planned push point at xy = [-0.02, -0.045] m. Moving directly to that push point now would require an estimated 0.135 m displacement and about 0.6 rad of remaining rotation, within the command limits, but the precheck might still fail. I’ll instead use the closer intermediate target [0.03, -0.06, 1.02] m with the downward orientation, then continue toward the push point. I’ll use six control steps while holding the left arm clear.

The bar spans approximately image x = 30–260 and y = 120–190 in the right wrist view, with its center near pixel (145, 155). The right end effector is currently at [0.077, -0.085, 1.013] m, with the gripper nearly pointing downward. I need to locate the push point more accurately. Unprojecting the bar’s center onto an assumed plane at z = 0.765 m may put its world xy coordinates near [0.026, -0.057] m. If that estimate is correct, a push point behind the bar at x = 0.026 m, y = -0.04 m would be suitable. My previously planned xy point of [-0.02, -0.045] m may be too far left. I’ll use the current wrist calibration to unproject the bar pixels before choosing the corrected push point.

The bar’s estimated center is at x = 0.003 m, y = -0.064 m, consistent with the earlier estimate, and its back edge is near y = -0.055 m. I’ll use a pushing point just behind that edge at [0.003, -0.048, 0.923] m. First, I’ll move the right arm from its measured position of [0.077, -0.085, 1.013] m to the hover pose [0.003, -0.048, 1.02] m with the fingers pointing downward. I estimate the target distance at 0.081 m. I initially considered moving above the point for six steps before closing and descending, but I can close the empty gripper during this approach to form a narrow paddle. At the target height of 1.02 m, I estimate the fingertips at z = 0.862 m, above the bar at z = 0.765 m and 22 mm above the basket rim at z = 0.84 m, so I judge closure there clear of contact. I’ll use six control steps with the right gripper commanded closed, expecting closure to complete, while holding the left arm at its current pose with its gripper open. Afterward, I’ll lower the closed right gripper toward z = 0.923 m for the push.

Moving the right arm toward x = 0 m with the gripper pointing downward is proving difficult. I’ll use a nearer intermediate target at [0.04, -0.06, 1.02] m, moving its x coordinate from the measured 0.077 m toward 0.04 m, before continuing toward the push point at x = 0.003 m. I’ll use five control steps.

The right gripper is now closed, and the bar’s center appears near wrist-image pixel (185, 135). The measured right end-effector xy position is [0.059, -0.075] m, so it has not fully reached the previous xy target of [0.04, -0.06] m. Moving directly to the planned push point at xy = [0.003, -0.048] m may still be too far for the local solver. I could first target [0.02, -0.055, 1.02] m, then continue toward x = 0.003 m. However, pushing does not require exact centering: the closed fingertips can contact the bar’s right half at x = 0.02 m, compared with its estimated center at x = 0.003 m. That may translate and possibly rotate the bar, which is acceptable. I’ll therefore use the nearer right-arm target [0.02, -0.048, 1.02] m, an estimated displacement of 0.047 m, while holding the left arm clear. This target may pass the precheck. I’ll use four control steps.

The right arm’s downward orientation near x = 0 m seems restricted by joint 4’s limit. I’ll try tilting the closed fingers forward, as before. I considered tilting toward either +y or -y, but +y, away from the robot and toward the basket, lets the fingertips reach behind the bar while the end effector stays farther forward. This may ease the wrist configuration while keeping the fingers nearly vertical for the push. The current right wxyz quaternion is [0.504, -0.495, 0.496, 0.505]. I’ll use the previously calculated 20° tilt about world +x, approximately [0.5799, -0.4046, 0.4046, 0.5799]. With this tilt, I estimate the fingertip center at y = end-effector y + 0.054 m and z = end-effector z − 0.148 m. An end-effector height of z = 0.913 m would put the tips at z = 0.765 m. To contact the bar’s back edge at y = -0.055 m, the end effector should be at y = -0.109 m. That places the end effector in front of the bar with the fingers pointing back toward +y. Could moving the end effector toward -y slide the bar forward? If the fingertips contact its back edge, moving them toward -y should push the bar forward. This seems preferable because the arm stays in front of the rim. The camera clearance is less certain: at the 20° tilt, I estimate its origin at y = end-effector y + 0.077 m and z = end-effector z − 0.064 m. At the proposed low push pose, that gives approximately y = -0.032 m and z = 0.849 m, still close to the rim at z = 0.84 m, but the view may remain usable. I’ll first target the right end effector at [0.02, -0.109, 1.0] m with the 20° tilt and the gripper closed, then lower toward z = 0.913 m before pushing. From its current position of [0.059, -0.075, 1.014] m, the requested position change is [-0.039, -0.034, -0.014] m, with about 0.35 rad of rotation. These are within the command limits, and I expect the precheck will likely pass. I’ll use five control steps while holding the left arm at its clear pose. This may resolve the reach restriction.

The right gripper is tilted about 10°, and its measured end-effector position is [0.032, -0.093, 1.008] m. The closed fingertips may be near the bar’s back edge around pixel (320, 200). In the wrist view, the bar spans roughly y = 170–230 pixels, while the fingertip center appears near (320, 255), just below the bar in the image. Finishing the tilt and lowering should bring the fingertips into contact. I estimate the current fingertip height as 1.008 − 0.156 = 0.852 m, about 87 mm above the bar at z = 0.765 m. With a 20° tilt and an end-effector height of z = 0.93 m, I estimate the tips at z = 0.782 m, still 17 mm above the tabletop. A later end-effector target of z = 0.915 m would put the tips near z = 0.767 m. I considered first lowering to z = 0.93 m for three steps while finishing the tilt, then proceeding to z = 0.915 m. The intended end-effector xy position is [0.02, -0.109] m to place the fingertips at y = -0.055 m. At the current end-effector y = -0.093 m and 10° tilt, I estimate a fingertip y offset of +0.027 m, placing the tips at y = -0.066 m, already near the back edge. Finishing the 20° tilt at the intended position should put them at y = -0.055 m. I’ll use four control steps to move the right arm to [0.02, -0.109, 0.93] m and finish the tilt, keeping its gripper closed and the left arm stationary.

The right arm descended only 0.017 m in four control steps and is still well above the target height of z = 0.93 m. It may need several more three-step actions. The fingertip center appears near pixel (320, 255). Is it touching the bar’s back edge? I initially estimate the dark back edge near image y = 225, with the fingertips below it in the image, suggesting no contact yet. However, the bar spanned image y = 170–230 in obs_000717 and now appears to span y = 225–290 in obs_000721, overlapping the fingertip projection at y = 255. Its projection may now be near the fingertip center, so contact could occur soon, though I am uncertain how the projection will change during further descent. The measured right end-effector height is z = 0.991 m, and I estimate the gripper tilt at about 14°. The fingertips may be at z = 0.839 m, still 0.074 m above the estimated bar top at z = 0.765 m. Overlap in the camera image does not establish physical contact. I’ll continue toward the same right-arm target height of z = 0.93 m and 20° tilt for four control steps, keeping the right gripper closed and the left arm stationary.

The right end effector is currently at z = 0.961 m. I estimate the fingertip height at z = 0.813 m, still 48 mm above the bar’s estimated top at z = 0.765 m. I should lower toward an end-effector height of z = 0.915 m. For now, I’ll continue toward z = 0.93 m for four control steps, then lower toward z = 0.915 m.

I estimate the right fingertip height as z = 0.93 − 0.148 = 0.782 m, still 17 mm above the bar’s estimated top at z = 0.765 m. Its estimated y coordinate is −0.109 + 0.054 = −0.055 m, exactly at the bar’s back edge. Lowering the right end-effector target to z = 0.915 m should bring the fingertips into contact with that edge. I’ll use three control steps for this descent, then push the bar forward.

With the right end effector at z = 0.915 m, the bar has shifted and rotated during the descent, now appearing diagonal from the bottom center toward the left. This indicates that the paddle contacted it and pushed it slightly sideways. In the high-camera view, the angled bar is now near pixel (322, 231), perhaps a few pixels farther forward. I’ll push forward by moving the right end effector toward more negative y. Moving from y = -0.109 m to -0.16 m would put the estimated fingertip y coordinate at -0.106 m and move the bar forward by about 0.05 m. I’ll keep x = 0.02 m, z = 0.915 m, the 20° tilt, and the gripper closed. First, I’ll target y = -0.14 m, a displacement of 0.031 m, for two slow control steps and inspect the result. Two steps fit the guidance to use 1–5 steps for cautious pushing.

The bar has moved and rotated significantly. In the right wrist view, its white left end is near pixel (20, 180), and its red right end is near the gripper at pixel (320, 380), so its long axis is now diagonal. In the high-camera view, the bar is near pixel (330, 240), about 9 pixels farther down in the image, consistent with forward motion. I could continue pushing toward an end-effector y coordinate of -0.17 m or -0.19 m until the bar is clear of the rim. The measured right end-effector y coordinate is -0.129 m, so it has not fully reached the previous target of -0.14 m. I estimate the fingertip y coordinate at -0.075 m. I’m uncertain whether contact is still at the bar’s back edge or whether the red end is now at the front. I’ll target y = -0.17 m, a change of -0.041 m from the measured end-effector position, to continue moving the bar forward. I considered two control steps to keep the push slow, but I’ll use three steps for this short motion.

The bar now appears near pixel (332, 255) in the high-camera view, about 50 pixels in front of the blue basket, and is on the open table. In the wrist view, it has rotated into an almost vertical or diagonal orientation, with its right end near the paddle. I considered whether the closed fingertips might already hold the red end, but that end appears near (320, 420), below the fingertip contact region, so I judge it is not held. I’ll retract the paddle slightly upward and back, open the gripper, and reposition for a center grasp. The measured right end-effector position is [0.02, -0.163, 0.916] m with a 20° tilt. Using high-camera pixel (331, 255) and an assumed bar height of z = 0.765 m, I tentatively estimate its center near x = 0.02 m and y = -0.10 m, perhaps y = -0.108 m. I’ll calculate the ray-plane position before choosing the alignment. Since the bar is now away from the rim, I can raise the end effector to z = 1.0 m while opening and rotating to the basic downward orientation, then align over its center. I could use the same downward grasp and six control steps of closure that worked on the previous white bar; closing along world x may rotate this diagonal bar into alignment. Alternatively, I could adjust the gripper’s yaw to close across its width. I need to estimate the bar’s current long axis before choosing between those orientations. In the high view, the red tip appears near (328, 255), while the white end may be under the wrist near (337, 236), suggesting a roughly vertical image axis along world y. In the wrist view, the visible long axis runs approximately from (120, 60) to (270, 340). Candidate endpoints are the top white sealed-end center near (135, 55) and the bottom red end perhaps near (320, 420), partly occluded by a finger, with visible red near (320, 405). I’ll unproject the high-camera center and candidate wrist points onto the assumed z = 0.765 m plane to estimate the center and world-axis direction.

The high-camera estimate puts the bar center at y ≈ -0.133 m. The wrist estimates for the white end at pixel (135, 55), with xy coordinates [-0.019, -0.061] m, and the red end at (270, 340), with xy coordinates [0.0076, -0.125] m, give a midpoint near [-0.006, -0.093] m, inconsistent with the high-camera estimate. Perhaps high-camera pixel (331, 255) marks the red end rather than the center. A possible center at (333, 242) would give y ≈ -0.103 m, which is closer. If the red wrist endpoint is instead at (320, 420), its estimated y coordinate would be -0.147 m and the midpoint y would be -0.104 m. I’ll use an estimated bar-center xy position of [-0.005, -0.104] m. From the estimated white endpoint at [-0.019, -0.061] m to the possible red endpoint at [0.01, -0.147] m, the long-axis vector is [0.029, -0.086] m, mostly along world -y. The basic downward gripper orientation closes along world x, so it should close across the bar’s width and provide a stable grasp. I’ll open and raise the right gripper to the hover target [-0.005, -0.104, 1.02] m while restoring the basic downward orientation. Its current measured position is [0.02, -0.163, 0.916] m with a 20° tilt. I estimate the target distance at 0.107 m and the orientation change at 0.349 rad, both within the command limits. Could opening and moving upward and back contact the bar? The closed fingertip is currently near its red end at estimated y = -0.109 m and z = 0.768 m, so some contact is possible, but the bar is not held and I judge this withdrawal acceptable. I’ll use five control steps and hold the left arm steady.

The right arm has moved only partway upward and back. In the right wrist view, the bar now appears vertical near image x = 170 pixels, extending from the top of the image to y = 365 pixels, with its center estimated near (180, 180). The measured right end-effector position is [0.017, -0.152, 0.937] m, still short of the target [-0.005, -0.104, 1.02] m. Reaching that target requires moving back by +0.048 m along y, left by 0.022 m, and upward. I’ll continue toward the same target for five control steps. Afterward, the bar’s center will likely appear near wrist-image pixel (320, 150).

The bar appears near image x = 200 in the right wrist view, still left of the gripper’s center. The right end effector is currently at x = 0.014 m, y = -0.142 m, and its target is x = -0.005 m, y = -0.104 m. Will that shift the bar rightward in the image? As the end effector moves left, the object should move right in the wrist view, so the correction makes sense. I’ll continue toward the same target for six control steps with the gripper open.

The bar appears near image x = 240 in the right wrist view, still left of the gripper axis. The right end effector has not yet reached the target x = -0.005 m and y = -0.104 m. I’ll continue toward the same hover target for five control steps, then descend toward the bar.

The bar’s center appears near image x = 270 in the right wrist view, rather than the gripper center at x = 320. The right end effector is currently at [0.002, -0.115, 1.006] m, still short of the hover target [-0.005, -0.104, 1.02] m. Moving farther left and upward should shift the bar rightward in the wrist view. I’ll continue toward the same hover target for three control steps, then descend toward the bar.

The bar appears centered near pixel (290, 160) in the right wrist view, with the right end effector at z = 0.98 m. I’ll begin descending toward the grasp target of [-0.005, -0.104, 0.923] m, keeping the downward wxyz quaternion [0.5, -0.5, 0.5, 0.5] and the gripper open. Three control steps may bring it closer to the grasp height. I’ll hold the left arm steady.

The right end effector is at z = 0.946 m, and the bar’s center appears near wrist-image pixel (290, 210). The gripper axis is at image x = 320, so the bar is about 30 pixels left of it, which I estimate as roughly 5 mm. I need to finish descending to z = 0.923 m and may also need a small x correction. What world x coordinate would unprojecting pixel (290, 210) at an assumed object height of z = 0.765 m give? The measured end-effector x is -0.007 m, compared with the previous target of -0.005 m. I could calculate the correction, but it seems small. I initially consider targeting x = -0.01 m; estimating the bar center as about 0.004 m left of the measured end effector gives x ≈ -0.011 m, so I’ll use that target. As I descend to z = 0.923 m, I expect the bar’s image y coordinate to move from about 210 toward 260, closer to the contact region. I’ll target the open right gripper at [-0.011, -0.104, 0.923] m for two control steps, with a requested vertical descent of 0.023 m, then close afterward.

The bar’s center appears near pixel (310, 240) in the right wrist view, close enough to the fingertip midpoint at (320, 275) to attempt closure. I’ll close the right gripper and hold for six control steps, split into two three-step actions. For this first action, I’ll use three steps while holding the left arm steady.

The right fingers are closing on the bar’s sides, and the alignment looks good. I’ll hold the grasp pose and continue closing for three more control steps before lifting.

The right gripper’s opening command is 0.12, and the bar is centered between the fingers, so the alignment looks good. I’ll test the grasp by targeting a right end-effector height of z = 0.953 m for three control steps, keeping its orientation steady and gripper closed while holding the left arm in place.

The bar stays in the same position relative to the right gripper after the test lift, and the opening command remains at 0.119, confirming the grasp. I’ll first raise the right end effector to [-0.011, -0.104, 1.08] m with the downward orientation unchanged, using six control steps while holding the left arm steady. Keeping the orientation fixed during this lift should help avoid another slip. Once the bar is high enough, I can tilt it gradually for transport to the middle basket. The middle basket is behind the gripper at about y = +0.05 m. With a 35° transport tilt, an end-effector placement target at y = -0.03 m would require a +0.074 m change from the planned y = -0.104 m. I initially considered x = 0.05 m, but I need to identify the available space. The purple bar may occupy the right or central area near world x = 0.05 m, and the existing white bar may be near x = 0.03 m. In the high-camera view at obs_000775, the white bar appears vertical near image x = 349 pixels, with the purple bar perhaps behind it; the left side near image x = 300 pixels appears empty. I favor placing the last bar in the left lane at world x = -0.05 m. That requires only a small cross-body move, which may pass the precheck with the 35° tilt at a raised height. Placing it at x = 0 m is another option, with stable stacking acceptable, but the left lane looks preferable. The bar’s long axis follows world y, so it should fit there. My plan is to lift to z = 1.08 m, tilt 35° at the same x and y coordinates, then move toward [-0.05, -0.03, 1.0] m and lower for placement. For now, I’ll perform only the six-step lift with the downward orientation held steady.

The vertical lift to z = 1.08 m with the fingers pointing downward failed the precheck without motion. This may be related to the right arm reaching across its body into negative x. I’ll use a shorter upward segment to z = 1.02 m, a requested rise of 0.068 m, before continuing toward z = 1.08 m. I’ll keep the bar grasped and the orientation steady, hold the left arm in place, and use four control steps.

The right end effector is at z = 0.994 m, and the bar remains held. I’ll continue lifting toward z = 1.06 m, a requested vertical rise of 0.066 m, with the fingers pointing downward. Once it is high enough, I’ll tilt it for transport. I’ll use four control steps.

The downward wrist configuration again appears to be near a limit while the right arm reaches across into negative x, so I’ll tilt it to allow further lifting. At the current end-effector height of z = 0.994 m, I estimate the bar’s bottom at z = 0.833 m, assuming a 0.161 m vertical offset below the end effector. That is close to the basket rim at z = 0.84 m. I’ll tilt the right gripper 35° toward +y while raising its target height to z = 1.04 m. The bar is centered in the grasp, so I expect it to remain secure. The right target is [-0.011, -0.104, 1.04] m, with a requested height increase of 0.046 m and an orientation change of about 0.61 rad. I expect the precheck will likely pass. Will the tilt move the bar forward in y? Tilting toward +y should shift it back toward the basket while raising its bottom, which is useful here. I’ll use five control steps.

The bar remains held, and the right gripper’s opening command is 0.119. The right wrist is currently tilted about 18°, with the end effector at z = 1.039 m. I estimate the bar’s bottom at about z = 0.89 m, clear of the basket rim. I’ll move the right arm to the middle basket’s open left placement lane at [-0.05, -0.03, 1.0] m, targeting a 35° tilt and keeping the gripper closed. The requested position changes are -0.038 m in x, +0.073 m in y, and -0.039 m in z, within the allowed motion bound. This is a small cross-body move. I’ll use five control steps while holding the left arm steady, then lower the bar for placement.

I’ll use a closer intermediate right-arm target at [-0.03, -0.06, 1.02] m before continuing to the final placement pose. The wrist has not yet reached the intended 35° transport tilt, so I’ll finish that rotation during this smaller move. I’ll use five control steps while keeping the bar grasped and holding the left arm steady.

The held bar is over the center-left of the blue middle basket, with the other bars to its right. The right end effector is at [-0.028, -0.066, 1.023] m with an estimated tilt of about 31°. I estimate the bar’s center at y = -0.066 + 0.075 = 0.009 m, near the front half of the basket. The existing bars may be at x = 0.02–0.05 m and y = 0.05 m, so the last bar at x = -0.028 m is to their left. I can keep approximately the current x coordinate and move the end effector to y = -0.04 m, putting the estimated bar center at y = 0.035 m. I’ll target [-0.03, -0.04, 0.95] m with the 35° transport tilt to lower it into that space. The target is about 0.078 m from the measured pose, within the command distance limit. I’ll use five control steps with the grasp maintained, then release the bar afterward. There is no need to shift it farther left.

The right end effector is at z = 0.976 m. Using the original estimated 0.161 m offset to the bar’s bottom and the 35° tilt, with cosine approximately 0.819, I estimate the vertical offset at 0.132 m. That puts the bar’s bottom near z = 0.844 m, about 79 mm above the estimated basket floor at z = 0.765 m. The previous z = 0.95 m target was not reached after five control steps; the arm descended only 0.047 m while also rotating and translating. I initially considered lowering to z = 0.91 m or 0.90 m, or first moving to z = 0.93 m and perhaps continuing to 0.90 m afterward. Using an estimated fingertip height of end-effector z minus 0.129 m, the fingertips are currently at z = 0.847 m—above the rim at z = 0.84 m by 7 mm, rather than below it. At an end-effector height of z = 0.93 m, the fingertips would be at z = 0.801 m inside the basket, and the bar’s bottom would be near z = 0.798 m, about 33 mm above the floor. I judge release from that height safe, so I’ll target z = 0.93 m rather than 0.95 m for the next five control steps.

The right end effector is at z = 0.93 m, with the bar’s bottom estimated at z = 0.798 m and the basket floor at z = 0.765 m. I judge the 33 mm drop acceptable. The bar is fully contained in the middle basket’s left lane. I’ll open the right gripper for three control steps while holding the left arm steady, then verify that the bar stays contained.

The last bar has been released inside the blue middle basket and is lying on the floor at the left, with the other bars in the center and right. I count three wooden toys—the elephant and two lions—in the white left basket, three chocolate bars in the middle basket, and three peppers, including the yellow pepper, in the right basket. The sorting goal appears complete, but native_success is still false and the required arm reset remains. Before calling robot_reset, both grippers must be open and both arms must be in clear space. The right end effector is currently at [-0.031, -0.039, 0.93] m, with its open fingers still inside the middle basket. The left arm is open and clear at [-0.2, -0.2, 1.08] m, with what I am treating as a 15° tilt. I considered lifting the right arm to z = 1.08 m and moving the left arm toward [-0.3, -0.25, 1.05] m or its initial pose, then allowing 30–50 reset steps. There are 298 control steps remaining, which should be enough. For right-arm clearance, I also considered lifting at the same xy coordinates with the 35° tilt, then moving toward [0.1, -0.15, 1.08] m. A shorter initial lift is preferable because earlier vertical retractions near x = 0 with this tilt sometimes failed the precheck with about 26 mm of position error. A target height of z = 1.05 m would request a 0.12 m rise; I’ll instead first target z = 1.03 m, a 0.10 m rise, while holding the left arm steady. I could then continue toward z = 1.08 m or 1.1 m if needed. At the current right-arm height of z = 0.93 m and 35° tilt, I estimate the fingertips at z = 0.801 m, below the basket rim at z = 0.84 m. Raising the end effector to z = 0.98 m would put the tips near z = 0.851 m, so the z = 1.03 m target should provide clearance. That may be enough to reset with the left arm already clear at z = 1.08 m, but the reset’s joint interpolation could carry the right arm forward and down near the bars or table as it returns toward the initial y = -0.352 m and z = 0.921 m. I therefore prefer moving it to a front staging pose before resetting. One possible staging target is [0.05, -0.20, 1.05] m with the 35° tilt and open gripper. I estimate the displacement from the basket pose as approximately [0.08, -0.16, 0.12] m, with a total distance of 0.216 m, within the 0.25 m command limit, though it still needs to pass the precheck. I’ll separate this into a lift to z = 1.03 m followed by the frontward move. Once the right arm reaches clear front space, I can allow 50 reset steps. Reorienting the left arm to its initial orientation beforehand is another option, but clearance is the immediate requirement. For this action, I’ll hold the open left arm at its current pose and lift the open right gripper vertically to [-0.031, -0.039, 1.03] m with its orientation unchanged, using five control steps.

The right-arm retraction target failed the precheck with a position error of about 9.8 mm, so neither arm moved. I’ll try a shorter vertical lift to z = 1.0 m, a requested rise of 0.07 m, perhaps retaining the current measured quaternion exactly. I’ll keep both grippers open, hold the left arm in its clear pose, and use four control steps.

The right end effector has moved only partway to [-0.014, -0.075, 0.995] m. It is still above the basket but has moved forward, so I’ll continue toward the front clearance target of [0.05, -0.20, 1.04] m before resetting the arms. The left arm has reached its staging area. I’ll use eight control steps to continue the right retraction while holding the left arm in place.

The right end effector is now at [0.015, -0.135, 1.02] m, in front of the middle basket; the camera shows the front rim at the bottom of its view. I estimate the fingers’ y coordinate as -0.135 + 0.09 = -0.045 m, so they may still be near the front wall, although the gripper is open. I’ll continue toward the right-arm clearance target of [0.05, -0.20, 1.04] m for six control steps while holding the left arm in place. Once the right arm is clear, I’ll reset both arms.

I should check that both arms are in clear, open space before resetting. The left end effector is at [-0.25, -0.25, 1.05] m with its fingers open and pointing forward and downward; it may still be near the front of the left basket. The right end effector is at [0.047, -0.196, 1.039] m with its gripper open, clear in front of the blue middle basket. Returning to the initial joints may move the right arm toward x = 0.3 m, y = -0.352 m, z = 0.921 m along a forward, rightward, downward path that appears unobstructed. The left arm should move toward x = -0.3 m, y = -0.352 m, z = 0.921 m along a clear forward path with a slight descent. I judge both arms sufficiently clear for the return. I believe the manipulation goal is complete, so the condition for calling robot_reset is satisfied. I’ll allow 50 control steps because the arms are still away from their initial poses and their orientation differences are large. I expect native_success to become true after the reset, but that remains to be verified in the feedback.

The final observation reports native_success as true, and the episode has ended, so I must take no further robot actions. I’ll briefly report that the objects are sorted into their respective baskets and the arm-reset procedure has finished. I should distinguish the completed reset procedure from reaching the exact home configuration. The reset feedback reports reached_home as false despite native task success. The arms appear near their initial poses, but the final left height is z = 0.951 m compared with the initial z = 0.921 m, the final right height is z = 0.972 m, and the orientations differ slightly. The reported maximum home joint error is about 0.307 rad. I considered saying that the arms returned home, but that would overstate the feedback. I’ll report the successful supplied outcome concisely without claiming exact home arrival or adding a caveat.