按语言分拣物体任务成功

I need to carry out the robotic sorting task. I should first read the robot-manipulation skill, which appears directly relevant and likely required, then examine the observation JSON, camera calibration, and image paths. I need an efficient plan using both arms. Are there six objects to pick up? My tentative reading of the image is a white car near the left gripper at approximately x = 190, y = 279; a yellow object, perhaps a car, partly behind the gripper at the left front at x = 131, y = 260; a yellow car in the center at x = 332, y = 291; a green pepper at x = 410, y = 267; a red chocolate bar at x = 365, y = 239; a yellow pepper on the right at x = 486, y = 255; and a chocolate bar at x = 500, y = 234. This may mean three cars for the left basket, two peppers for the middle basket, and two chocolate bars for the right basket. The 1100 available control steps should be plenty, but the manipulation needs to be precise. I should map the estimated image locations to positions using the calibration and possibly a known tabletop height. Python and camera projection could help with that. For now, I will read the skill and observation metadata, and perhaps list the available files.

I should proceed without subagents. I can use the shell to inspect the camera calibration.

I need to understand the coordinate frame. Environment X points right, and Y likely points away from the robot. For the high camera, the approximate rotation matrix is R = [[1, 0, 0], [0, -0.866, -0.5], [0, 0.5, -0.866]], and the translation is t = [0, 0.2989, 1.3378]. The camera center is −Rᵀt. Its X coordinate is 0. The Y component of Rᵀt is −0.866 × 0.2989 + 0.5 × 1.3378 = 0.410, giving camera Y = −0.410. The Z component is −0.5 × 0.2989 − 0.866 × 1.3378 = −1.308, giving camera Z = 1.308. Thus, the high camera is approximately at (0, −0.410, 1.308) m, looking toward +Y and downward. Is the table’s front edge near Y = −0.6 m? The baskets may be near Y = 0.05 m. The initial left link6 pose is approximately (−0.3, −0.352, 0.922) m with quaternion [0.707, 0, 0, 0.707] in wxyz order, corresponding to a 90° rotation about Z. Local X maps to world +Y, so the fingers point forward, away from the robot. Local Y maps to world −X, making world X the closing axis. The wrist-camera view appears consistent with the fingers pointing horizontally toward the baskets. For a grasp from above, I should rotate the gripper so local +X points along world −Z, then choose a closing direction along world X or Y according to the object’s shape. Could quaternion [0.5, 0.5, 0.5, 0.5] work? Another tentative top-down quaternion is [0.5, −0.5, 0.5, 0.5]. I should derive the rotation rather than assume either candidate is correct. I can map local X to (0, 0, −1) and local Y to either (1, 0, 0) or (−1, 0, 0). If I choose local Y along world +X, the local Z direction follows from the cross product: (0, 0, −1) × (1, 0, 0) = (0, −1, 0). The resulting matrix, with these directions as columns, is [[0, 1, 0], [0, 0, −1], [−1, 0, 0]]. I can compute its quaternion with SciPy. Alternatively, I might map local Y to world Y when gripping an elongated bar lying along X. The cars may initially be oriented diagonally. I should estimate the object coordinates from the high-camera image. Could I assume a tabletop height of Z = 0.75 m? The initial link6 height is 0.922 m, and the table appears to be around 0.75 m high, with baskets about 0.1 m tall. These are estimates. I may be able to assess the table height using the known gripper geometry and camera calibration. The high-camera image appears to show the fingertips near the objects. I can project the measured link6 position and a point 0.1576 m along local +X, then compare those pixels with the visible fingertips. This could help verify the rotation mapping and assess the tentative tabletop height of 0.74 m. I will use Python to project the initial link6 and fingertip positions and map the selected image pixels onto candidate height planes, including the guessed Z = 0.75 m plane.

I’ll create an enlarged crop of the object area in the initial high-camera image to help clarify their categories and shapes before choosing grasps.

I’ll inspect the enlarged crop of the initial object area to clarify the objects’ categories and shapes before choosing grasp points.

I count seven visible objects: a yellow block behind the left gripper, a white car, a central yellow car, a green pepper, a red bar, a yellow pepper, and a beige bar. The left yellow object is still somewhat ambiguous. Its rectangular yellow top and turquoise base could resemble a chocolate bar, but it also looks like a yellow school bus viewed from the side. The left wrist view shows a yellow rectangular shape with a small white part underneath. I tentatively identify it as a third car, possibly a bus, and will sort it accordingly. The yellow bus appears between the left gripper’s open fingers near image coordinates (131, 260). The projected fingertip location is around (125, 244), while the two visible fingertips seem to be around (96, 244) and (166, 246), with the gripper opening along world X. This might already allow a horizontal grasp, followed by a lift and placement into the white left basket. However, the white car near (190, 280) appears to touch the outside of the right finger, so I need to avoid it. The yellow pepper near (485, 258) also seems to be between the right gripper’s fingers. Perhaps both objects could be grasped and lifted directly; the initial arrangement may have been set up for that. Before closing, I need to understand their vertical alignment. The initial open gripper’s link6 height is 0.9215 m. If the table is around 0.78 m high, the pepper center might be around 0.83 m. Are the fingers themselves centered near 0.92 m, or does their geometry extend downward along local Z as well as forward along local X? A pepper roughly 0.06 m high on a table at 0.75 m might have its top near 0.82 m, making fingers at 0.92 m too high. The table could instead be around 0.82 m. My earlier expectation of a 0.78 m tabletop would put the initial end effector at 0.922 m about 14 cm above it. The fingertips appear to occlude the pepper down toward its bottom, but that does not establish accurate grasp alignment. I can compare the calibrated projections with the robot geometry. The predicted end-effector pixel is approximately (82.6, 353.5), whereas I initially associated the gray wrist housing with roughly (75, 280), or its center with (70, 288). That apparent discrepancy of about 65 pixels made me question the correspondence between link6, the camera calibration, and the visible housing. The link6 may instead correspond to the black joint behind the housing, near (108, 365). The measured initial link6 position, (−0.3, −0.352, 0.9215) m, projects to (82.6, 353.6), which is reasonably close to the black joint center around (109, 365). A point 0.1576 m along local +X projects to (124.9, 244.4), consistent with the fingertips around image X = 100 and 166 at Y = 244. The gray housing near (70, 285) may correspond to an intermediate forward offset: at 0.08 m, the projection is about (106, 293). This seems broadly consistent with the model, though I still need to establish the fingers’ physical height relative to the objects. A tabletop height of 0.80 m seems plausible. A pepper could be 0.12 m high, with its center near 0.86 m; fingers near 0.92 m might contact its upper half if their vertical extent is around 0.025 m. A bus around 0.06 m high would be too low for that gripper height on a 0.78 m table. Could the table be as high as 0.85 m? The boundary and initial finger geometry do not yet settle this. If the table is at 0.80 m, the initial end effector at 0.922 m is about 12 cm above it. A pepper 0.08 m high would have its top at 0.88 m, so a descent of about 5 cm might be needed. The estimated object coordinates depend on the assumed height plane. At Z = 0.80 m, the white car maps to approximately (−0.245, −0.204) m in X and Y. If its visible top is at Z = 0.83 m, that estimate changes to (−0.232, −0.219) m. On the 0.80 m plane, the central yellow car maps to (0.022, −0.227), the left bus to (−0.372, −0.162), the green pepper to (0.174, −0.177), the red bar to (0.094, −0.114), the right yellow pepper to (0.324, −0.158), and the beige chocolate bar to (0.37, −0.1), all in meters. These positions seem plausible relative to the initial left arm at X = −0.3 m. The bus would be around X = −0.37 m, about 7 cm left of the gripper, and Y = −0.16 m. The white car would be around (−0.245, −0.20) m. The basket image points mapped onto Z = 0.80 m give centers near (−0.299, 0.056), (0, 0.056), and (0.301, 0.056) m. Their approximately symmetric X positions near ±0.3 m support the 0.80 m tabletop hypothesis. Perhaps the authored basket centers are actually −0.32, 0, and 0.32 m, and the objects were placed near simple coordinates such as bus X = −0.4 m, white car X = −0.25 m, yellow car X = 0 m, and right pepper X = 0.32 m. I will use 0.80 m as the working tabletop estimate, with object tops perhaps at 0.82–0.86 m, while remembering that the coordinates change with height. The basket-center estimates also need refinement before placement. If the rim is at Z = 0.88 m rather than the tabletop’s 0.80 m, the selected image row V = 176 may correspond to the front panel near Z = 0.82 m, and the actual basket centers could be around X = ±0.32 m. The image point (190, 176) might not be the interior center. The left basket’s front panel appears to span X = 126–256 and Y = 139–211 pixels, with a possible interior floor center near (192, 178). I am also considering a basket center at Y = 0.1 m and Z = 0.83 m. I should eventually choose the drop location from the top opening and its four image corners. Rather than close without confirming alignment, I will first move both arms into top-down poses above the bus and yellow pepper, potentially grasping them simultaneously. Moving from the initial 90° Z rotation to a top-down orientation may require about 1.57 rad of rotation, exceeding the 1 rad target limit, so I will need an intermediate orientation and may split the translation as well. I will compute candidate top-down quaternions and inspect their axes. I want local +X pointing downward and local Y aligned with world −X or +X, while also considering how the wrist camera will view the object. The left wrist camera’s environment-to-optical rotation has approximate rows [[1, 0.0003, 0], [0.00015, −0.5, −0.866], [−0.000255, 0.866, −0.5]]. I could use this to infer the camera orientation relative to link6, though that may not be necessary now. Candidate wxyz quaternions include [0.5, −0.5, 0.5, 0.5] and [0.5, 0.5, 0.5, −0.5]. I will use SciPy to inspect their rotation axes and angular distances from the initial orientation before selecting one.

The estimated bus position is (−0.354, −0.182) m in X and Y, but I had expected its X coordinate might be closer to −0.4 m. I should validate this using a pixel at its base. I could refine the mapping for an assumed table height of 0.8 m using the baskets’ symmetric arrangement. Could the table’s front and back edges establish its height? That alone would not settle the absolute scale. The known gripper geometry could also help calibrate object positions in the environment. A better option is stereo triangulation using corresponding points in the high-camera and wrist-camera images. These images were captured at the same time and have known calibrations. If I can recognize the same object point in both views, I can estimate its 3D position from the two camera rays without assuming its Z coordinate. The initial left wrist view shows the bus at the bottom left and the white basket. The right wrist view shows the pepper near the bottom center and a chocolate bar. I should choose distinctive points visible in both views, such as the beige chocolate bar’s top-left tip or bottom-right corner, the yellow pepper’s stem, or a front corner of the bus. The green pepper may be visible only in the high view, although the green corner at the bottom left of the right wrist image might belong to it. The bus appears as a large yellow area at the bottom of the left wrist view, while its top is visible in the high view. Tentative pixel correspondences for the yellow pepper’s stem are (484, 251) in the high image and (390, 414) in the wrist image. A side-by-side composite with coordinates, combined with projection checks and manual correspondence selection, could make this more reliable. First, I will calculate the wrist-camera positions. The left camera’s X coordinate may be approximately −0.2996 m, since its transform has an X translation of about 0.2996 m and its first rotation row is nearly aligned with world X. I still need to compute its Y and Z coordinates.

The wrist cameras are at Z ≈ 0.972 m, and the high camera is at Z ≈ 1.308 m, so these views should be suitable for stereo triangulation. The bus appears near the bottom of the left wrist image because it is close to the camera and below it. I estimate the yellow pepper’s center at pixel (390, 431) in the right wrist image and (486, 257) in the high-camera image. Perhaps I can triangulate the center of its stem. I’ll inspect cropped images with coordinate grids to help match points between views. I could use Python and Matplotlib to combine the images with labeled axes. I plan to save crops enlarged by 2× with grid lines every 20 pixels.

I’ll compare the gridded crops from the high and wrist cameras to identify matching object points. These correspondences can help refine the uncertain object positions through stereo triangulation before choosing grasp targets.

Stereo correspondences seem possible. The top of the right pepper’s stem might be near pixel (486, 240) in the high-camera image, but a finger may occlude it. In the high-right crop, the pepper’s sides are visible while the black finger blocks its center, so the stem is probably hidden. The stem’s top appears near (389, 389) in the wrist image. I wondered whether a tiny green part was visible in the high view, but I cannot see it clearly enough to use it. The beige chocolate bar offers more promising correspondences. Its upper-left corner may match between (479, 220) in the high image and (385, 328) in the wrist image. The bar appears to extend from approximately (478, 219) at the upper left to (520, 246) at the lower right in the high view, and from roughly (384, 328) to (526, 404) in the wrist view. These seem to be corresponding corners. I can try triangulating its upper-left endpoint using high-camera pixel (480, 220) and wrist pixel (385, 328), and its lower-right endpoint using (520, 246) and (526, 405), respectively, to estimate their 3D coordinates. The bus’s top corners are less certain because of finger occlusion. In the high view, its upper-left corner appears near (113, 251), and its upper-right corner might be near (151, 259), although the finger obscures it. A far corner in the wrist view appears near (128, 408); the right corner still needs checking. The yellow region in the high crop seems to run from about (112, 250) to (151, 259). Using the larger gridded high-left crop, I estimate the bus polygon’s upper-left corner at (114, 251), a possible upper-right corner at (152, 258), a possibly occluded lower-right corner at (151, 273), and its lower-left corner at (120, 268). In the wrist view, the top polygon may have an upper-left corner at (128, 409) and a lower-right corner at (258, 453), though perspective makes those labels uncertain. I could triangulate the distinctive left corner using (113, 251) in the high image and (129, 409) in the wrist image, but I should check that these represent the same corner. The wrist camera is at approximately X = −0.3 m, and the object may be at X = −0.35 m, to its left and near the bottom center of the image. The high camera is at X = 0 m and also sees the object to the left. Both views have the same horizontal direction, with downward viewing angles of about 60° for the high camera and perhaps 30° for the wrist camera. The selected points should be the far upper-left corner, but that correspondence remains tentative. The white car appears in the high view but may be completely occluded by the bus in the initial left-wrist view. I will need to move the wrist later to inspect it. For now, I will use a least-squares stereo triangulation function to estimate the beige bar’s endpoints and the bus corner.

The attempt to write the helper script failed with “No such file or directory.” Perhaps /tmp is unavailable in this sandbox or the directory does not exist. I could save the script in the workspace instead. I recall an instruction to use apply_patch for file edits, though I am unsure whether shell-written helper code would be an exception. I should use apply_patch if I create a local file. Alternatively, I can run the Python code directly through a heredoc without saving it. I’ll use that approach.

The beige chocolate bar triangulates to Z ≈ 0.78 m, with an estimated center near (0.38, −0.09, 0.783) m. Its top is near Z = 0.785 m. This suggests the tabletop might be around 0.76 m rather than my earlier 0.8 m estimate, though 0.75 m is also possible. The earlier high-camera projection at Z = 0.8 m gave approximately (0.37, −0.1) m in X and Y, which is close. The pepper’s side lobe triangulates to approximately (0.33, −0.15, 0.804) m. The bus result is implausibly large, so something is wrong with that triangulation. The bar endpoints have small ray errors, so I should give the stereo estimates more weight than my assumed tabletop height. If the bar is 0.015 m thick and its top is at 0.785 m, the table would be around 0.77 m. A tabletop at 0.75 m is another possibility; my earlier basket projections at Z = 0.75 m gave X coordinates near ±0.33 m, which could be their intended positions. The robot starts at Z = 0.922 m. I could estimate the table height directly by matching a wood-grain feature visible in both cameras and triangulating it, but I would need an identifiable texture correspondence. Alternatively, I could use the bar’s thickness, although that is still an assumption. Pepper lobe points near Z = 0.805 m and a possible pepper top at 0.86 m would be consistent with a 0.1 m-tall pepper on a table at 0.76 m. I should refine the bar and bus correspondences. The bar corner at high-camera pixel (479, 221) may be its left, far endpoint, matching wrist pixel (384, 329), with triangulated Z ≈ 0.785 m. A table at 0.75 m with a 0.03 m-tall bar is plausible. A typical bar thickness of 0.02 m would instead suggest a table height of 0.765 m. These remain estimates. Perhaps the table is exactly 0.75 m high. The initial end effector at 0.922 m would then be about 17 cm above it. A bus top at 0.82 m would correspond to a 7 cm-tall bus, and a pepper top at 0.86 m to an 11 cm-tall pepper. Under that hypothesis, the earlier bus projection at Z = 0.82 m, with X ≈ −0.354 m rather than −0.4 m, remains plausible. For top-down grasps, my tentative link6 target heights are 0.95 m for a bar center at 0.79 m, 0.98 m for a car center at 0.82 m, and 0.98–1.0 m for a pepper center at 0.82–0.84 m. Starting from link6 Z = 0.922 m, I consider moving up to 1.02 m a safe approach. I could grasp the first bus near (−0.355, −0.182) m in X and Y, based on the high view and an assumed top height of 0.82 m, but stereo should refine this. I could inspect a larger, ungridded high-left crop and the full left-wrist view. The bus’s yellow top seems roughly aligned with image X. In the high view, its quadrilateral appears to run through pixels (114, 251), (149, 258), (145, 274), and (121, 269), with turquoise beneath it. In the wrist view, two apparent corners are (128, 409) and (256, 449); the other corners may be near image X = 219 and X = 80, possibly beyond the bottom edge. The high-view far-left corner at (114, 251) may match wrist pixel (128, 409). That should triangulate near (−0.36, −0.18, 0.82) m rather than the large positive result. I see the error: I used camera index 2 for every wrist correspondence. The images are ordered 0 for the high camera, 1 for the left wrist, and 2 for the right wrist. The pepper and bar correctly used the right wrist, but the bus pixels came from the left wrist. I will recompute the bus triangulation using index 1. The white car may still be occluded in the left-wrist view.

I estimate the yellow bus’s center at approximately (−0.35, −0.172) m in X and Y, with its top at Z = 0.82–0.84 m. The yellow pepper’s center may be near X = 0.334 m, Y = −0.15 m, and the chocolate bar’s center near X = 0.38 m, Y = −0.09 m. The tabletop is likely at Z = 0.76 m. A bus height of 0.06 m would put its top at 0.82 m. For its eventual top-down grasp, I could use X = −0.35 m, Y = −0.172 m and an estimated contact-center height of Z = 0.805 m, with link6 at Z = 0.9626 m. I need to choose the bus’s closing direction. In the high view, its dimensions may be about 0.05 m along X and 0.03 m along Y. The triangulated far-left point at (−0.374, −0.166) m and far-right point at (−0.326, −0.165) m give an X length of 0.048 m; the near-left estimate at (−0.386, −0.179) m is less reliable. Its long axis therefore appears to run along world X. Closing along X would grip a length of roughly 0.06 m, perhaps within a maximum opening of 0.08 m, but closing across its shorter width along world Y, around 0.04 m, would be preferable for stability. My selected top-down orientation closes along world X. I could instead rotate the yaw by 90° so local Y closes along world Y, with local X downward and local Y along world +Y or −Y. Choosing local X = (0, 0, −1) and local Y = (0, 1, 0) gives their cross product as (1, 0, 0), and a rotation matrix with rows [[0, 0, 1], [0, 1, 0], [−1, 0, 0]]. Could its quaternion be [0.707, −0.707, 0, 0]? Would that represent a −180° rotation about X? I would need SciPy to check. The initial orientation maps local X to world +Y and local Y to world −X, while this alternative would map local X to world −Z and local Y to world +Y. The whole rotation from the initial pose might be 2.42 rad, requiring multiple intermediate motions. Alternatively, I can retain the easier top-down orientation and grip the bus at its ends along X. The maximum opening may be 0.09 m, making a 0.06 m bus feasible, although this school-bus-like object might be 0.10 m long. Its projected length of 40 pixels could correspond to about 0.08 m; the stereo length of 0.048 m may omit corners. Its world extents may be about 0.06 m along X and 0.04 m along Y. The initially open fingertips appear separated by about 70 pixels along X at a depth of 0.44 m, suggesting 0.108 m. With the high camera’s focal length of 288 pixels, that 70-pixel gap suggests about 0.107 m, so the maximum opening may be 0.1 m. A bus length of 0.065 m would fit safely. An end grasp along X could be stable enough, and the pepper’s estimated X width of 0.05 m also suits closing along X. I will use the top-down orientation that closes along world X for both arms. The first action will use an intermediate pose while keeping both grippers open. I will target the left arm from its initial position (−0.2995, −0.3523, 0.9215) m toward (−0.35, −0.17, 1.04) m above the bus. I estimate that distance as 0.234 m, below the 0.25 m limit. The right arm will move from (0.3005, −0.3523, 0.9215) m toward (0.335, −0.15, 1.04) m above the pepper, an estimated distance of 0.236 m. Both will use the halfway quaternion [0.6532, −0.2706, 0.2706, 0.6533] in wxyz order, with an orientation change of about 0.785 rad. This raises the grippers while moving them over the objects. At the intermediate orientation, I estimate the fingertip extension to have components of roughly +0.107 m along world Y and −0.114 m along world Z, placing the tips at Z = 0.926 m. That should clear the pepper’s possible top at 0.86 m and the bus’s top at 0.84 m. Five control steps might move only about 0.1 m with the 0.02 m per-step increment, rather than reaching the full target. Ten steps could be appropriate for a confidently unobstructed motion, but I will use eight for this elevated approach and fewer during the final descent. I will inspect the feedback to determine the actual motion.

The arms are now close to the intermediate orientation. The left arm’s current wxyz quaternion is approximately [0.661, −0.25, 0.249, 0.662], compared with the intermediate target of approximately [0.653, −0.2706, 0.2706, 0.6533]. Its measured position is (−0.326, −0.251, 0.985) m, while the target is (−0.35, −0.17, 1.04) m. Another 10 steps might reach that pose. Has the white car moved slightly? Its initial image center was near (190, 280), and it now seems near (190, 284). It may have shifted slightly left and downward when the left gripper moved away, possibly because the finger nudged it. However, the high-camera view shows its center near (190, 283), which is similar to before. The yellow bus is now near pixel (130, 263). A collision seems unlikely, but I am not certain. The left wrist camera now shows the whole bus, with its yellow top centered near pixel (210, 390), and the white car at the lower right. The right wrist camera shows the pepper centered near (360, 390). These clearer views could help refine the object positions through stereo triangulation. In observation 23, the bus top is near (130, 260) in the high view and its center is approximately (208, 392) in the wrist view. The pepper’s top is fully visible from the wrist, with the stem near (361, 376), although the right gripper may still partially occlude its center in the high view. I could triangulate corresponding corners to refine the 3D geometry. Will the wrist camera’s optical axis point straight down once the gripper is top-down? I will need to inspect that view. I could finish the intermediate motion and then rotate downward, or directly target the final top-down quaternion [0.5, −0.5, 0.5, 0.5] now. I estimate the rotation from the current orientation as roughly 0.78 rad, or about 0.77 rad, which is below the 1 rad limit. Keeping the previous positions above the objects would give targets of (−0.35, −0.17, 1.04) m for the left arm and (0.335, −0.15, 1.04) m for the right. I estimate the corresponding position distances as 0.095 m and 0.103 m. I could use 15 steps to move directly to those top-down poses. However, I need to consider the fingers’ clearance throughout the rotation. The left link6 would rise by about 0.055 m and move forward by about 0.08 m. At the current tilt of approximately 40°, the fingers point forward and downward. A rough fingertip-height estimate is 0.985 − 0.12 = 0.865 m, close to the pepper’s possible top at 0.85 m and the bus’s top at 0.84 m. At the proposed final link6 height of 1.04 m, the downward fingertip extent would give a tip height of 1.04 − 0.158 = 0.882 m, about 3–4 cm above the objects. The minimum height during the motion might nevertheless be around 0.85 m, creating a risk of contact. The grippers are not yet exactly centered above the objects. From the left link6 position of (−0.326, −0.251) m in X and Y, a local-X extension of approximately 0.157 m may contribute +0.107 m along world Y and −0.115 m along world Z. That puts the estimated tip at (−0.326, −0.144, 0.870) m. The bus center is estimated at (−0.35, −0.172, 0.82) m. With the fingertips around Y = −0.144 m and spread approximately ±0.05 m along X, they may be just behind the bus and could touch its far edge. The right tip is estimated at (0.317, −0.143, 0.860) m, almost directly over the pepper center near (0.33, −0.15) m, whose top may be at 0.85 m. The open fingers may lie approximately ±0.05 m along X from the center. The center is clear, but the fingers could contact the pepper’s sides. Moving slightly forward and upward may be acceptable, but rotating downward could bring a finger into the pepper. I could use three steps and inspect, or first raise link6 to 1.10 m at the current orientation, rotate at that height, and descend later. Although a final height of 1.04 m gives an estimated tip height of 0.882 m, the current right tip near 0.86 m has borderline clearance. Another option is to combine the final downward orientation with targets at Z = 1.12 m. For the left arm, the estimated target distance would be sqrt(0.024² + 0.081² + 0.135²) = 0.16 m, and for the right it would be about 0.17 m, with a rotation of about 0.77 rad. I expect the fingers to remain above 0.9 m during that motion. I could use eight steps and repeat; this appears unobstructed. A link6 target height of 1.10 m should also be sufficient, giving a final tip height of 0.942 m above object tops near 0.84 m. I will use the final top-down quaternion with Z = 1.10 m for both arms, keep both grippers open, and execute 10 steps.

The grippers are tilted farther downward, but they have not reached the target top-down orientation. I could continue for another 10 steps. Have any objects shifted? In the high-camera view, the bus appears near pixel (134, 262), compared with its earlier X coordinate of 130. The white car is near (190, 282), and the pepper is near (487, 258). The beige bar may have moved from (500, 234) to (506, 239). Could the right gripper have contacted it? In observation 33, it appears more vertical or diagonal, near (505, 238), compared with its initial position near (500, 234). In the wrist view, it runs diagonally from upper left to lower right, but it was diagonal initially too. The apparent difference could be perspective from the moving wrist camera; perhaps the bar has stayed in place in the high-camera view. Its initial high-view upper-left and lower-right corners were near (478, 220) and (521, 247). Is its upper-left corner now at image X ≈ 494? This may warrant inspection, though it may not be critical. I will continue toward the final raised alignment poses. I could use 12 steps. I estimate the remaining left-arm position distance as 0.086 m and orientation distance as 0.46 rad, and the right-arm distances as 0.094 m and 0.45 rad. Eight steps may be enough, so I will use eight.

The arms have not yet reached the final top-down poses. The left arm’s current wxyz quaternion is approximately [0.574, −0.414, 0.414, 0.573], with an estimated angular distance of 0.30 rad to the final orientation. Its measured position is (−0.342, −0.197, 1.058) m, compared with the target (−0.35, −0.17, 1.1) m, an estimated distance of 0.054 m. The right arm is similarly short of its target. Another six control steps might suffice. Alternatively, I could target a downward orientation with adjusted X and Y coordinates to align more accurately with the objects. The bus is now centered near pixel (260, 235) in the left wrist image. I do not have a clear initial wrist-center coordinate for comparison, and the camera view is changing as the arm moves. At the final top-down orientation, the grasp target might appear near image X = 320, but its image Y coordinate is still unclear. I should account for the camera’s offset relative to link6 and use the current wrist images to refine the grasp point. I can use the current camera extrinsics and corresponding bus-top corners to triangulate its position more accurately, potentially estimating its 3D center and orientation through stereo or a homography. In observation 41, the bus is unobstructed in the high view, with its center near pixel (134, 262). Its top corners in the left wrist view are approximately (197, 178), (334, 212), (327, 284), and (185, 240). I will create enlarged crops to identify and match the four corners in both views. The yellow pepper is also visible in both views and is now unobstructed in the high image. I could triangulate its stem center using a tentative high-camera point near (487, 255), or perhaps (489, 254), and wrist-camera point (328, 251). The green pepper is visible at the left edge of the right wrist image. I will generate gridded crops of the bus and yellow pepper from observation 41 before refining the grasp targets.

I’ll inspect the new gridded crops of the yellow bus and pepper from the high and wrist cameras to identify matching points. This should help refine their uncertain grasp locations before descending.

I will use the grid to match the yellow bus’s top corners between the high-camera and left-wrist views. My first estimate of the high-view top edge is from (114, 250) to (143, 254), perhaps continuing to (153, 260), but I am uncertain which corners are on the far side. The crop is enlarged by a factor of 4 and covers original-image X coordinates 95–170 and Y coordinates 235–290. Reading the grid more carefully, I estimate the bus’s yellow top corners in the high view as A, upper left, at (114, 251); B, upper right, at (146, 255); C, lower right, at (143, 266); and D, lower left, at (111, 261). Could this be the white car’s shape? I need to identify the matching yellow top in the wrist view. My tentative left-wrist corner estimates are A at (194, 190), B at (323, 221), C at (319, 280), and D at (187, 240). The yellow top edge in that view appears to run from (194, 190) to (323, 222), while the high-view top edge may run from (115, 250) to (144, 255). For triangulation, I will try these high-view and wrist-view correspondences: A, (114, 251) with (194, 190); B, (144, 255) with (323, 222); C, (144, 266) with (319, 280); and D, (111, 261) with (187, 240). The yellow pepper’s stem center may provide an accurate correspondence at high-camera pixel (490, 250) and right-wrist pixel (326, 254). The tiny green stem pixels appear near (489, 249) in the high view. The pepper’s outline is centered near (486, 258) in the high view and (327, 249) in the wrist view, so the stem center seems a useful point to match. I will compute the triangulation using observation 41.

The new triangulation places the yellow bus’s center near X = −0.374 m, Y = −0.156 m, with its top at Z = 0.802 m, or approximately 0.80 m. This differs from my earlier estimate of (−0.35, −0.17) m in X and Y. The tabletop may be at Z = 0.75 m and the bus about 0.05 m tall. Its estimated dimensions are 0.068 m along X and 0.026 m along Y, so its long axis runs along X. Grasping its ends by closing along X requires an opening greater than 0.07 m; the maximum opening may be about 0.1 m. I should use a grasp center at (−0.374, −0.157) m. My earlier X target of −0.35 m was 2.4 cm to the right and could produce an off-center grasp near one end. The pepper’s stem is near (0.329, −0.151, 0.818) m, its sides are near Z = 0.795 m, and its center is approximately (0.332, −0.155) m in X and Y. My earlier right-arm target of (0.335, −0.15) m is close to that estimate. I still need to choose the link6 height for the downward grasp. With the bus top at Z = 0.802 m and its bottom assumed to be at 0.75 m, its center would be near 0.776 m. A mid-body contact height of 0.775 m may be appropriate. The fingers extend about 0.157 m downward from link6 in the top-down orientation, but where along their length are the pads? Contact could be near the upper third. I could choose link6 Z = 0.775 + 0.14 m, though the contact offset might instead be about 0.12 m. I need to choose the contact location from the object’s shape rather than use only the farthest fingertip extent of 0.1576 m. At link6 Z = 0.94 m, the fingertips would be at 0.7824 m, near the bus’s center. If the pads occupy roughly the last 0.05 m of the fingers, contact at 0.94 − 0.13 = 0.81 m might be too high, near the top. Placing the fingertips at the object center would suggest a link6 height around 0.78 + 0.157 = 0.937 m. Descending too far could put the tips below the assumed tabletop at 0.75 m; the minimum link6 height would be 0.9076 m. Another possible bus target is link6 Z = 0.925 m, giving tips near 0.767 m, about 0.017 m above the table and around the lower half of the bus. That could be stable. Is a typical grasp offset closer to object Z + 0.12 m? I could reconstruct the visible finger geometry using the initial view and stereo estimates to locate the pads, but an approximate placement may suffice. For the pepper, the stem top is at Z = 0.818 m, the sides at 0.795 m, and the assumed bottom at 0.75 m, giving a height of 0.068 m. A grasp center near 0.782 m suggests the same link6 target of 0.94 m. I could descend both arms to that height with the final orientation held steady. At the earlier approach height of 1.1 m, the tips would be near 0.942 m, about 0.12 m above an object top at 0.82 m. At link6 Z = 0.94 m, the tips would be near 0.782 m. I should first approach at Z = 0.98 m, with tips near 0.822 m, then descend to 0.94 m for closure, using 1–3 steps near contact. The current left link6 height is about 1.058 m, and the orientation is not yet fully top-down. I could finish alignment at Z = 1.02 or 1.04 m before descending. I will use the corrected left target (−0.374, −0.157, 1.02) m with the final top-down quaternion. I estimate the remaining position distance as 0.063 m and the orientation distance as 0.3 rad. The right target will be (0.33, −0.151, 1.02) m, with an estimated position distance of 0.057 m. These poses would put the tips near 0.862 m, about 0.06 m above the objects. I will keep both grippers open, use six steps, then inspect the wrist views and refine the alignment.

Both grippers are now nearly downward-facing. In the wrist images, I estimate the bus center at about (320, 165), though its vertical coordinate is uncertain, and the pepper center at about (325, 192). The black fingers extend from the bottom corners toward approximately (120, 260) and (520, 260), with their tips near image Y = 260. The objects appear near image Y = 150–200. Does this mean the objects are beyond the fingertips in the camera view? Is the camera looking along local X, and what world direction corresponds to the image’s vertical direction in this top-down pose? I should understand the wrist camera’s pose relative to link6 before descending. The objects may appear above the image center because of the camera offset or tilt. Descending should make them larger, but I am unsure whether it will move them upward or downward in the image, or toward the center. Using the camera extrinsics and measured end-effector poses from observation 47, I can project the estimated grasp centers into the current wrist views: the bus at approximately (−0.374, −0.157, 0.776) m and the pepper at approximately (0.33, −0.151, 0.782) m. I can also project the fingertip center, defined by p = eef + R[:, 0] × 0.1576 m, whose pre-grasp height is approximately Z = 0.8634 m. The grasp point should eventually align with that fingertip center in the environment. The current X and Y coordinates match approximately, leaving the height difference, but the object and fingertip projections may be separated vertically because the camera is offset or tilted relative to the finger axis. I will compute the camera center and optical axis in the link6 local frame using the precise quaternion from the observation JSON rather than the rounded pose in the message. For a local point, its environment position is p = eef + R × local. This lets me project the local fingertip-center point (0.1576, 0, 0) m through the current camera calibration. At a proposed grasp link6 height of 0.94 m, an object center near Z = 0.78 m would be close to the fingertip-center height of 0.7824 m. I could predict the camera extrinsics at that pose from the fixed camera-to-link6 transform and project the object to determine its expected image location. It might be near image X = 320, but I do not yet know the expected image Y coordinate. Because the camera is fixed to link6, the image projection of the local fingertip-center point should remain invariant across poses. I can calculate that reference pixel now, project the estimated object centers into the current wrist views, and use the comparison to refine X and Y alignment before descending. I can also compare the predicted finger-tip pixels with the visible tips. I will calculate these projections and the camera’s local position and axes first.

The camera center is offset by approximately 0.0848 m along link6 local X and 0.0509 m along local Z. Is the optical axis along local −Y, or should I read optical +Z from the third column of the camera-axis matrix? I am still unsure how to interpret that matrix, but I do not need to resolve it for this descent. The fingertip-center projection is approximately (320, 274.7) pixels. The estimated bus center projects to about (315, 155), consistent with the visually estimated center near (315, 165). If X and Y remain aligned, descending should move the object’s projection toward image Y = 274.7, where a point at local X = 0.1576 m aligns with the fingertip center. In observation 47, I estimated the bus center at image Y ≈ 165 and the pepper center at Y ≈ 190. Image Y ≈ 275 could therefore serve as a fingertip-alignment reference during descent. The estimated object centers currently have local X coordinates of 0.2448 m for the left gripper and 0.2379 m for the right. Reaching local X = 0.1576 m would require descents of approximately 0.0872 m and 0.0803 m, respectively. With estimated object-center heights of 0.776 m for the bus and 0.782 m for the pepper, this suggests link6 heights of 0.9336 m on the left and 0.9397 m on the right, close to my earlier 0.94 m proposal. I could descend both arms to Z = 0.94 m, placing the object centers near image Y = 275. However, would that grasp contact only the very tips? Perhaps I should close when the object’s contact region is closer to image Y = 330. The visible finger tips seem to be near image Y = 260, or about 257, reasonably close to the predicted 274.7. The pad contact region may span local X = 0.12–0.1576 m, projecting from image Y ≈ 428 to 275; the pads might extend from local X = 0.09 m to 0.1576 m. An object center at local X = 0.1576 m would be aligned with the tips, potentially giving a less stable grasp. A center at local X = 0.12 m, projecting near Y = 428, might allow contact farther along the pads. That deeper placement risks hitting the table. For a low object about 0.05 m tall, a grasp center at Z = 0.776 m with the fingertips extending another 0.0376 m downward would put the tips at Z = 0.7384 m, below the assumed tabletop at 0.75 m. Contacting an upper region near Z = 0.80 m would instead put the tips at 0.7624 m. Another option is contact at local X = 0.14 m, with the tips extending 17.6 mm beyond it. For an upper contact point near Z = 0.79 m, the tip height would be about 0.772 m, and the contact point would project near image Y = 330. Since local X points downward, an upper bus contact at Z = 0.79 m and link6 at Z = 0.93 m would give local X = 0.14 m. The fingertips would be at Z = 0.7724 m. The estimated bus center at 0.776 m would have local X ≈ 0.154 m, nearly at the tips, while its upper region would contact farther along the pads. This makes left link6 Z = 0.93 m a promising grasp height. For the pepper, an upper-side contact near Z = 0.80 m with link6 at 0.94 m would also give local X = 0.14 m, with tips at 0.7824 m and its center near 0.78 m close to the tips. I will tentatively use eventual grasp heights of 0.93 m on the left and 0.94 m on the right, with the exact downward orientation. From the current height near 1.02 m, that means about 9 cm and 8 cm of descent. Three steps with a maximum increment of 0.02 m might produce roughly 0.03 m of motion, though I am uncertain; the previous six-step action reached its nearby target. I could first target 0.97 m, inspect, and then target 0.93/0.94 m. Alternatively, initial targets of 0.96/0.97 m might leave the arms near 0.98 m. I also considered 0.95 m on the left and 0.955 m on the right. For this action, I will use three steps and target (−0.374, −0.157, 0.95) m on the left and (0.33, −0.151, 0.95) m on the right, keeping both grippers open. These targets are within the 0.25 m distance limit and require only a small orientation change. The actual heights may remain near 0.96 m. At the target downward poses, the fingertips would be at Z = 0.7924 m, above the assumed 0.75 m tabletop. Closing at 0.95 m might already contact the upper regions, but I will inspect the observation after these three steps before deciding.

In the wrist views, the yellow bus’s center is near pixel (320, 200), and the yellow pepper’s center is near (326, 230). The upper grasp contact may need to reach image Y ≈ 330, so I should descend another three steps toward a link6 height of 0.94 m. The measured heights are currently 0.984 m on the left and 0.981 m on the right. If I target 0.93 m and 0.94 m respectively and three steps produce about 0.036 m of descent, the resulting heights would be approximately 0.948 m and 0.945 m. That may be suitable; I can inspect afterward and perhaps close at 0.94 m. I need to check clearance from the white car beside the left gripper. In the left wrist view, the bus spans roughly image X = 190–452 and Y = 110–295, with the fingers at the edges near Y = 260. The white car is visible near (560, 290), behind and close to the right finger near (520, 290). Could they be touching? The bus’s long axis appears diagonal in this view; does it correspond to world X? I think so. The gripper closes along image X, with fingers near X = 120 and 520. The bus is about 260 pixels long, compared with an opening of about 400 pixels. The white car at image X greater than 520 might lie under the right finger during descent. However, the high view places the white car near (190, 280) and the bus near (132, 262), suggesting a world separation of perhaps 0.13 m. Their estimated world X coordinates are −0.374 m for the bus and −0.23 m for the white car, a gap of about 0.14 m. The left gripper’s right finger would be at X = −0.374 + 0.05 = −0.324 m, while the white car’s left edge may be at X = −0.27 m, leaving approximately 0.054 m of clearance. That seems safe; their apparent proximity in the wrist view may be due to depth. In the right wrist view, the beige bar is near (540, 100), while the right finger is near (520, 260), so they appear clear of each other. The green pepper is at the left edge. I will descend for three steps with the left link6 target at Z = 0.935 m and the right at Z = 0.94 m, keeping the same orientation and both grippers open.

The yellow bus now appears large in the left wrist view, with its center perhaps near pixel (330, 260). Its yellow body spans approximately image X = 150–500 and Y = 140–380. The fingertips are near Y = 260; the left finger occupies approximately X = 0–126 and Y = 260–480, while the right finger is near X = 520. The bus ends are near X = 150 and 500, and the fingertips are near X = 126 and 520, so they appear aligned to contact the ends as the fingers close inward along image X. The pepper spans approximately X = 200–460 and Y = 170–440 in the right wrist view, with fingers near X = 120 and 520 and their tips near Y = 260. That alignment also looks suitable. Perhaps I should close now at the current link6 heights of 0.95 m on the left and 0.948 m on the right. At the left link6 height of 0.95 m, the fingertips are at Z = 0.7924 m. The estimated bus top is at Z = 0.802 m, so the tips are near its top and should contact its upper edges. The right fingertips are at Z = 0.7904 m, close to the pepper’s estimated side height of Z = 0.795 m. I will close both grippers without translating. I initially considered two control steps, but the current opening command is 1, and interpolation toward the boolean closed target may take several steps. Two steps might not fully close the grippers, so I will use three.

After three control steps, the opening commands are 0.662 on the left and 0.459 on the right. They have not reached the closed endpoint of 0, but the fingers appear to be contacting both objects. Perhaps the opening command is interpolated at about 0.1126 per step? The left command went from 1 to 0.662, a change of 0.338 over three steps, or about 0.1127 per step. The right went from 1 to 0.459, a change of 0.541 over three steps, or about 0.1803 per step. Why is the right closing faster? Could contact explain it, or might the interpolated commands use independent rates? I am unsure. I could hold the poses and continue closing for another three steps, or begin lifting while the grippers are still closing. I prefer two more closure steps before a two-step test lift. Both objects are clearly between the fingers, and the bus appears unchanged in the high-camera view, with no apparent accidental push. I will hold both arm poses and continue closing for two steps.

The opening commands have remained unchanged after two more steps. Since these are the latest interpolated opening commands, could that mean the controller has reached mechanical contact and stopped closing? The objects may be blocking further closure, which would be encouraging, but I should verify the grasps with a test lift. I will target a link6 height of 0.99 m for both arms while holding their orientations steady and keeping the grippers commanded closed. Two control steps allow at most 0.04 m of motion; the actual lift may be about 0.024 m. I considered three steps, but I will use two for this small test lift.

In the high-camera view, the bus appears to have moved from pixel (132, 260) to approximately (130, 265). The left arm lifted 2.2 cm, but the object appears lower in the image. Would lifting it move its projection downward? Increasing Z makes the camera’s Y coordinate more negative through the −0.5 Z term, while also decreasing camera depth; I am unsure of the resulting effect on image V, but it likely moves downward. The bus’s apparent shift therefore indicates that it lifted with the gripper. The pepper similarly appears near (487, 260), compared with (488, 258) before the lift. Both objects remain unchanged relative to their grippers in the wrist views, so I consider both grasps secure. Before transporting them, I need to refine the basket drop centers and plan sufficient clearance. The basket centers may be approximately (−0.32, 0.09), (0, 0.09), and (0.32, 0.09) m in X and Y for the left, middle, and right baskets. I could triangulate them from the high and wrist views as the arms move, or use the initial views. The bus and bar triangulations suggest that the tabletop may be at Z = 0.75 m, with the baskets resting at that height. The basket front and bottom corners appear stable in observation 60. The held object now occupies the left wrist view, preventing a clear view of the basket, but the initial left wrist image shows the white basket fully, and the initial right wrist image shows the right basket. I can match basket features in those images with the initial high-camera view and reconstruct their corners. The white basket’s front panel occupies approximately X = 127–253 and Y = 143–211 pixels in the high view; in the left wrist view, the basket spans roughly X = 234–556 and Y = 203–357 pixels. My first estimates of the left basket’s opening corners in the high view are (145, 139), (235, 139), (256, 177), and (126, 177). The corresponding left-wrist corners may be (284, 214), (506, 214), (556, 274), and (234, 274). Are these the same physical corners? The left camera is near X = −0.3 m and the high camera near X = 0 m, and both images have the same horizontal direction, so their left-to-right ordering is consistent. The back edge at high-camera Y = 139 appears to correspond to wrist-camera Y = 214, while the nearer front edge at Y = 177 corresponds to Y = 274. I could triangulate the four rim corners and average them to estimate the center, but I should inspect gridded crops first. For the right basket, my tentative high-view opening corners are (400, 140), (492, 140), (513, 177), and (384, 177). The initial right-wrist corners may be (22, 210), (230, 210), (312, 273), and (−40, 273), with the last point offscreen. The left basket estimate would serve the left arm. The yellow pepper needs the middle basket, whose center may share the same Y coordinate with X = 0 m. Could I triangulate the middle basket from the initial wrist views? The initial left wrist view shows the white basket centered with only a blue sliver at the right edge; the right wrist view may show a blue sliver on the left. It may be better to use the apparent common Y coordinate and equal spacing of all three baskets, together with the high-camera projections, the left basket center, and the right rim correspondences. Alternatively, because the baskets are fixed and open, an image-based interior-center estimate using Z = 0.75 m may be sufficient, with an estimated tolerance of about 5 cm. I still need to avoid the rims and aim confidently inside. For a refined left-rim triangulation, I will tentatively use high-camera corners A = (145, 140), B = (234, 140), C = (254, 176), and D = (127, 176). In the initial 640 × 480 left wrist image, the corresponding corners may be the back-left at (278, 210), back-right at (502, 211), front-right at (554, 273), and front-left at (234, 273). I will create gridded crops of the initial high and left wrist views to check these estimates.

I’ll inspect the gridded crops of the left basket from the initial high and wrist views to match its rim corners. Those correspondences can help refine the basket center and rim height for placement.

My initial basket pixel estimates were off. In the left wrist view, the basket’s front edge appears at Y = 230 and its bottom at Y = 305, rather than its rim being at Y = 274. Where is the top or back rim? The crop starts at Y = 180 and already shows the interior at its upper edge, so I may have cropped out the back rim. I had estimated the white basket’s top near Y = 205 and a point near (236, 205) in the full wrist image, but I am unsure of its extent. The back rim might instead be near Y = 172, or perhaps Y = 139. In the high-camera view, the back rim appears near Y = 140 and the front rim near Y = 180. A larger wrist crop covering Y = 120–320 could help resolve this. Could I use the front rim without making another crop? The high-camera front-left and front-right corners appear near (125, 181) and (250, 181). My tentative corresponding wrist points are near (200, 230) and (526, 232), but those estimates are uncertain. The current wrist crop spans X = 200–590 and shows the front rim running approximately from (200, 230) to (520, 230). The actual front-left corner might be at X = 180, outside that crop, while the front-right corner may be near (525, 235). I could triangulate the front-right corner using high-camera point (250, 181) and wrist point (525, 235). For the front-left corner, I could tentatively pair (125, 181) with (180, 235), checking the latter in the full wrist image. The back-right corner might pair high-camera point (235, 140) with wrist point (466, 140), though that is also uncertain. Perhaps using only the front-right corner and the known symmetry would be enough to estimate the basket center. I will make a gridded crop of the initial left wrist image covering approximately X = 150–560 and Y = 100–250 to inspect the upper rim more clearly.

I’ll inspect the expanded gridded crop of the initial left wrist view to clarify the basket’s upper rim and corner locations. This should help resolve the uncertain correspondences with the high-camera view and refine the placement center.

I now estimate the left basket’s back rim at image Y = 140 in the high-camera view and Y = 155 in the left wrist view. Its front rim is at about Y = 180 in the high view and Y = 230 in the wrist view. For the corner correspondences, I estimate the outer back-left corner at high-camera pixel (143, 140) and left-wrist pixel (219, 155), and the back-right corner at (235, 140) and (464, 155), respectively. The front-left corner appears at (125, 180) in the high view and (169, 226) in the wrist view; the front-right corner appears at (253, 180) and (526, 226). I will triangulate all four corners.

The triangulated left basket center is approximately X = −0.287 m, Y = 0.057 m, with the rim at Z = 0.84 m. The errors are around 1–2 cm, but the result seems plausible. My earlier high-camera estimate using Z = 0.75 m gave X = −0.328 m and Y = 0.102 m. That estimate was wrong because the selected pixel at V = 176 was not the opening center, and the rim is at about Z = 0.84 m. The basket dimensions still have some uncertainty. Could its outer width be 0.25 m? The triangulated front extends from X = −0.426 m to −0.143 m, giving a width of 0.283 m, which initially seems too large compared with the image and a typical width of 0.2 m. The back width is 0.223 m. Some correspondences may be inaccurate, particularly the back-right point, perhaps high-camera X = 236 versus wrist-camera X = 463, so refinement may be useful. The visible outer width is about 130 pixels. Could the projection scale at a rim height of 0.84 m be around 390? A width of 0.28 m would project to about 110 pixels, which seems plausible. The white basket is likely about 0.22 × 0.16 m. The front width of 0.283 m might reflect a wrong point pairing, although wrist pixel X = 526 with high-camera X = 252, and wrist X = 170 with high-camera X = 125, seem accurate. Its actual width could be 0.25 m. The front center is approximately (−0.285, 0.014) m in X and Y, and the back center is approximately (−0.29, 0.10) m, supporting a center Y of 0.057 m. Basket centers at X = −0.3, 0, and 0.3 m, Y = 0.05 m, with rims at Z = 0.84 m and the table at Z = 0.75 m, seem consistent. Before moving sideways, I need to raise the held objects above the rims. The left link6 is currently near Z = 0.972 m. I estimate the bus bottom at 0.75 + 0.022 = 0.772 m after the test lift, below the 0.84 m rim. Raising its bottom above 0.86 m would require link6 above 1.06 m. A transport height of 1.12 m should put its bottom near 0.92 m. The pepper bottom is similarly estimated at 0.772 m after the 0.022 m lift; link6 at 1.12 m should put its bottom near 0.922 m. That gives about 0.08 m clearance over the rims. A direct left-arm move from (−0.374, −0.158, 0.972) m to (−0.29, 0.057, 1.12) m is approximately 0.273 m, or 0.272 m using changes of 0.084, 0.215, and 0.148 m. This exceeds the 0.25 m target limit. I can first lift vertically by 0.148 m to Z = 1.12 m, then move horizontally by about 0.231 m, within the limit. The right-arm move from (0.33, −0.152, 0.97) m to the middle basket at (0, 0.057, 1.12) m is about 0.422 m, also too far. It needs a lift followed by an intermediate position around X = 0.16 m, Y = −0.05 m before reaching the center. I considered eight steps for the lift. Afterward, I could move the left arm to (−0.29, 0.057, 1.12) m and the right to (0.15, −0.04, 1.12) m. The right path may pass diagonally over the table and red bar, but a pepper bottom near 0.92 m should clear object tops near 0.82 m and rims near 0.84 m. Could the arm body collide with a basket? With link6 at 1.12 m and the held object bottom near 0.92 m, I expect the body behind the gripper to pass clear. I will retain the downward orientation and keep both grippers closed. Six lift steps may be insufficient: at roughly 0.011–0.017 m per step, the required lift of about 0.15 m suggests ten steps. I will target Z = 1.12 m for both arms at their current X and Y positions, use ten steps, and inspect the resulting observation.

In observation 70, the held bus and pepper are clearly lifted. Did the beige bar move? In the high-camera view, it seems near pixel (502, 235), or perhaps (500, 235), while the lifted pepper is near (528, 225). Initially, the bar was near (500, 234) and the pepper near (486, 258). The bar may appear shifted left and downward, but its current diagonal endpoints, approximately (477, 222) and (523, 250), may be the same as initially. It is also visible at the upper right of the right wrist view, so I am not sure it moved. Did the left bus rotate? It remains stable relative to the wrist view, with no apparent slip. I could lift to 1.12 m for another four steps before transporting it. The left link6 is currently at Z = 1.078 m; the previous ten steps raised it by 0.106 m, leaving 0.042 m to the target. Alternatively, I can combine the remaining lift with horizontal transport if the objects already clear the rims. I initially wondered whether the object bottom was near Z = 0.856 m. Using the assumed initial tabletop height of 0.75 m, the bus's link6 lift from 0.95 m to 1.078 m is 0.128 m, putting its estimated bottom at 0.878 m. That is already 0.038 m above the 0.84 m rim. The pepper's estimated bottom is likewise 0.75 + (1.076 − 0.948) = 0.878 m. This seems sufficient to begin horizontal transport while continuing upward to 1.12 m. For the left arm, a proposed basket-center target of (−0.29, 0.057, 1.12) m is approximately sqrt(0.083² + 0.217² + 0.042²) = 0.236 m from the measured pose (−0.373, −0.16, 1.078) m, within the 0.25 m limit. For the right arm, the intermediate target (0.15, −0.02, 1.12) m is approximately sqrt(0.18² + 0.135² + 0.044²) = 0.229 m away, also within the limit. A subsequent right-arm target at (0, 0.057, 1.12) m would be about 0.172 m from that intermediate pose. I can move both arms simultaneously for twelve steps. The left path from X ≈ −0.37 m to −0.29 m, with a Y increase of 0.217 m, may pass over the white car. The held bus's estimated bottom is near 0.88 m, above the white car's estimated top at 0.80 m and the white basket rim at 0.84 m, so I expect clearance. The right path from X = 0.33 m to 0.15 m and Y = −0.155 m to −0.02 m passes above the beige bar at approximately Z = 0.79 m and the green pepper at approximately Z = 0.82 m. Could the held pepper collide with the red basket rim on the way to the blue basket? At the intermediate pose, its estimated bottom would be near 0.92 m, above the 0.84 m rim, so that path appears clear. The refined left basket center is approximately (−0.287, 0.057) m in X and Y. The middle center is likely (0, 0.057) m, and the right center approximately (0.30, 0.057) m. For this action, I will use the left target (−0.29, 0.055, 1.12) m and the right intermediate target (0.15, −0.02, 1.12) m, retaining the downward orientation and closed gripper commands for twelve steps.

Both arms failed the precheck on position error. Perhaps the targets are near joint limits, or the downward orientation constrains forward reach toward Y = 0.055 m at Z = 1.12 m. The previous left target was about 0.236 m away, close to the 0.25 m limit, so the large change may have caused the local IK search to stall. The right target was also about 0.229 m away. I should use shorter intermediate moves, roughly half the previous distances. I will target the left link6 at (−0.33, −0.05, 1.11) m, an estimated distance of 0.135 m, and the right at (0.24, −0.09, 1.11) m, an estimated distance of 0.115 m. I expect these closer targets to pass, then I can continue toward the baskets. No control steps were spent on the rejected action, so obs_000070 remains valid. I will try eight steps.

The last motion was only partial. The left link6 is now at (−0.348, −0.101, 1.09) m. Moving directly to the basket target at (−0.29, 0.055, 1.12) m would be about 0.17 m, compared with the earlier 0.236 m move that failed the precheck. This shorter move might pass. The right link6 is at (0.262, −0.109, 1.098) m; its middle-basket target at (0, 0.055, 1.12) m is about 0.31 m away, exceeding the 0.25 m limit. I could instead use a right-arm intermediate target at (0.14, −0.03, 1.12) m, about 0.157 m away, while sending the left arm directly to its basket target. However, the left precheck might still fail. Is Y = +0.055 m reachable at Z = 1.12 m with the gripper pointing downward? The earlier attempt had about 83 mm of position error; perhaps its best iterate was near Y = −0.03 m. The downward orientation could constrain forward reach through the arm’s kinematic limits. How far does the arm’s initial configuration allow it to reach along Y? I estimate the robot bases may be near X = ±0.3 m, Y = −0.55 m, Z = 1.0 m. Perhaps link6 can reach Y = 0.1 m at Z = 1.0 m. The current left Y is about −0.1 m, and the target is +0.055 m, a forward change of about 0.155 m. I expect the basket to be reachable because the scene is designed for this task, but that does not resolve the precheck failure. The larger move may have stalled the local search with its 0.05 rad joint-increment bound after 60 iterations, so even a 0.17 m move might still be too large. I will choose shorter raised waypoints: (−0.32, −0.02, 1.11) m for the left arm, about 0.09 m away, and (0.17, −0.04, 1.11) m for the right, about 0.117 m away. I can continue to the basket targets afterward. These smaller moves seem more reliable, and efficiency is less important here. I will use eight control steps.

Even the roughly 0.09 m waypoint attempt failed, with position errors around 18 mm. Could the requested direction be near a singular configuration? The grippers have the downward wxyz quaternion [0.5, −0.5, 0.5, 0.5], and the left link6 is high at Z = 1.09 m. Forward reach at this height and orientation may be difficult because of joint limits. I could lower the arms, adjust their orientations, or try smaller increments of about 0.05 m. The local precheck may fail on a 9 cm move because of the starting joints and requested direction, while a smaller move might pass. Possible targets are (−0.34, −0.06, 1.10) m for the left arm, with ΔY = +0.041 m and ΔZ = +0.01 m, and (0.22, −0.075, 1.10) m for the right arm, with ΔX = −0.042 m and ΔY = +0.034 m. The right move would be approximately 0.054 m. These targets might pass, and there is still plenty of control budget despite the repeated actions. However, forward motion toward the baskets may be fundamentally difficult with the downward orientation. Could I rotate the grippers back to their initial forward-facing orientation while holding the objects and carry them horizontally? That might ease the reach constraint, but rotating the held objects and grippers introduces risk. I still expect the baskets to be reachable with top-down grippers. Because either arm’s precheck failure prevents both from moving, the paired rejection does not establish what would happen independently. Still, the similar failures suggest a shared difficulty with high, forward targets. Could the local solver be stalling near joint limits? Before another motion, I will use Python to read the recorded joint states, including the current state in observation 78, and check whether the joints appear near their limits.

Joint 3 is now around 2.0 rad, perhaps near an upper limit of 2.1 rad. The failed forward-motion prechecks may be stalling at that limit. Joint 2 is around 1.9 rad and might also be near a limit. I do not know the actual limits; possibilities such as ±3.14 rad for joint 2 and 0–2.2 rad for joint 3 are only guesses. I should infer the difficulty from the recorded motion rather than inspect simulator internals. Initially, the joints were zero with the fingers pointing horizontally along world +Y and link6 near Y = −0.352 m, Z = 0.922 m. The downward grasp required joint 2 around 1.7 rad and joint 3 around 1.25 rad. Lifting increased joint 3 to about 1.65 rad, and moving forward to Y ≈ −0.1 m increased joint 2 to 1.93 rad and joint 3 to 2.0 rad. Does forward reach at this height require the arm to fold further? Reaching basket Y = 0.055 m while keeping the gripper downward might require joint 3 above 2.2 rad. Lowering link6 could reduce the elbow angle, but I am not certain. I could lower link6 to Z = 1.0 m or tilt the fingers forward toward a horizontal carrying pose. Lowering while keeping the downward orientation would put the held object’s bottom near Z = 0.80 m, below the estimated rim at 0.84 m, creating a collision risk during transfer. With horizontal fingers, an object held forward at about Z = 1.0 m might have its bottom near 0.95 m and remain clear. The initial horizontal pose suggests that this orientation may allow easier forward reach. I can rotate the secured objects at the current raised positions, then translate toward the baskets. Their swept paths need clearance, so I should rotate gradually and could move back slightly first if needed to relieve the joint constraints. The downward quaternion to the initial horizontal quaternion, a 90° Z rotation, is a whole-orientation change of about 1.57 rad, exceeding the 1.0 rad command limit. The intermediate wxyz quaternion [0.653, −0.2706, 0.2706, 0.6533] gives a 45° tilt and a change of about 0.785 rad. At the current left link6 position (−0.348, −0.101, 1.09) m and right position (0.262, −0.109, 1.098) m, I could rotate to this intermediate orientation without translating. A rotation-only precheck may pass, although joint 3 would still change. Keeping the wrists high should provide clearance. Treating an object center as approximately 0.1576 m along the fingertip direction, the left center would move from Z ≈ 1.09 − 0.158 = 0.932 m to Z ≈ 1.09 − 0.113 = 0.977 m and Y ≈ −0.101 + 0.109 = 0.008 m. Thus, the bus would swing upward and forward, remaining near X = −0.348 m. The white basket center is near Y = 0.057 m, with its rim at Z = 0.84 m, so the bus would be above the rim near the front. The right pepper center would be approximately Y = 0 m, Z = 0.987 m. This rotation appears safe and may redistribute the joints enough to ease the reach problem. A subsequent full horizontal rotation could move the left object to Y ≈ 0.057 m, Z ≈ 1.09 m without translating link6. Its X coordinate would remain −0.348 m rather than the basket center’s −0.29 m, but a bus about 0.07 m long along X should still fit within the estimated basket span of −0.42 to −0.14 m. The pepper would still be at X = 0.262 m and would need a later leftward transfer to the middle basket. I could combine the intermediate rotation with small X and Y corrections, but rotation alone may be sufficient for the left arm. At a horizontal pose, link6 Y = −0.1012 m plus the 0.1576 m fingertip extent gives fingertip-center Y = 0.0564 m, nearly the basket’s Y = 0.057 m. The bus would then be above the white basket near (−0.348, 0.056, 1.09) m. I could lower link6 to Z = 0.93 m, where the object might have its bottom near 0.90 m, still above the 0.84 m rim. To rest on the basket floor at Z = 0.75 m, its center would need to be near 0.78 m, and a horizontal link6 pose might also need Z ≈ 0.78 m. Can the arm lower that far? Alternatively, releasing from 0.90 m could give a drop of about 0.15 m into the basket. Lowering to Z = 0.88 m might put the bottom near 0.85 m, just above the rim, allowing a drop of about 0.10 m to the floor. A similar pepper placement could release its center near 0.90 m with its bottom near 0.85 m and a drop of about 0.10 m. After a full horizontal rotation at right link6 position (0.262, −0.109, 1.098) m, the pepper center would be near (0.262, 0.049, 1.098) m, above the right basket rather than the middle one. Moving link6 X from 0.262 m to 0 m at fixed Y = −0.109 m and Z = 1.098 m would be 0.262 m, slightly beyond the 0.25 m command limit. I could use X = 0.14 m as an intermediate target, then move to X = 0 m. The horizontal orientation may make that reach easier, and the raised right-arm path should remain clear of the left arm at X = −0.348 m. Once above the middle basket, I could lower and release the pepper near Z = 0.90 m. Lowering while retaining the downward orientation is another possibility. I could test targets (−0.348, −0.101, 1.02) m on the left and (0.262, −0.109, 1.02) m on the right. That vertical descent would likely pass and reduce joint 3. A subsequent forward target at Y = 0.055 m, Z = 1.02 m would be about 0.166 m away and might pass. However, using the grasp offset from link6 Z = 0.95 m at the table, link6 Z = 1.02 m would put the object bottom near 0.82 m, about 2 cm below the 0.84 m rim. I would need to raise or tilt before crossing the rim. Rotating now while high seems safer. I also need to consider how the objects themselves rotate. The bus is currently horizontal, grasped at its ends with local +X pointing downward. Rotating the fingers forward changes local +X toward world +Y while local Y remains along world −X, so the closing direction stays along world X. Does that keep the object upright? The gripper and a rigidly held object would rotate about world X, the closing axis, by about 90°. The bus’s top normal starts along world +Z; I am unsure of its resulting direction or the sign of that rotation, but the bus could tip onto its side or become vertical. The pepper and its stem would also rotate. Could the bus contact the fingers during that rotation? The grasp appears secure, but this makes the plan more complex. The task only requires containment, with no object-orientation requirement, so resting on a side or at an angle is acceptable. I could also stop at the 45° tilt, transfer the partially tilted objects, and let them settle after release. Changing only the top-down yaw so local Y points along world Y might alter joint 5, but I do not expect it to resolve the joint 3 difficulty. I will first rotate both arms to the intermediate orientation at their current positions, with both grippers commanded closed, and inspect the result. The approximately 0.785 rad rotation is within the 1.0 rad limit. If the precheck fails, I can lower slightly or move back before trying a different pose. For this action, I will use wxyz quaternion [0.65322369, −0.27059807, 0.27059803, 0.65333927], left position (−0.348, −0.101, 1.09) m, and right position (0.262, −0.109, 1.098) m, using the rounded measured positions from obs_000078. I will execute six control steps and then inspect the feedback.

The wrists have only partially rotated toward the intermediate orientation. The left wrist’s current wxyz quaternion is approximately [0.554, −0.44, 0.44, 0.553], which I estimate is about 25° from downward-facing. In the high-camera view, the objects appear to have moved forward: the bus is near the left basket’s front at pixel (115, 180), and the pepper is above the red basket at pixel (482, 174). Both remain secure. I estimate the remaining rotation to the intermediate orientation at about 0.45 rad. I could continue for six steps or combine the tilt with a right-arm X translation, but I will finish the intermediate posture first to relieve the joint-limit difficulty. Both arms still need to reach the intermediate wxyz quaternion [0.65322369, −0.27059807, 0.27059803, 0.65333927]. I will hold their current positions, keep both grippers closed, and use five control steps.

The left gripper’s opening command is now 0.0, and the yellow bus appears to be inside the white basket. It may have slipped or fallen during the tilt; did the grasp fail while rotating? I need to update my earlier assumption that it was still held. In the high view, its turquoise portion is near the basket’s left-front interior at pixel (167, 184), and it appears entirely contained. The left wrist view shows it behind the empty, closed gripper, perhaps supported on the basket floor. I do not need to manipulate it again unless it is not fully contained. Native success remains false because the remaining objects still need sorting. The empty left arm is at (−0.348, −0.097, 1.095) m in a tilted pose. I can open its gripper and prepare for the next car. The yellow pepper still appears secure in the right gripper, high above the left edge of the red basket. The right link6 position is (0.262, −0.105, 1.104) m, with wxyz quaternion approximately [0.642, −0.296, 0.296, 0.642]. Its posture is close to the intermediate carrying orientation, so I can try translating left and forward toward the middle basket. One possible right-arm waypoint is (0.14, −0.06, 1.104) m, which I estimate is 0.132 m away, with an orientation adjustment of about 0.07 rad to the intermediate quaternion. I could move the left arm toward the white car while the right carries the pepper. The white car’s estimated X and Y coordinates are approximately (−0.25, −0.21) m, and the central yellow car’s are approximately (0.02, −0.23) m. The left arm could handle the white car, while the right later handles the green pepper or chocolate bars. A left-arm target above the white car at (−0.25, −0.21, 1.04) m would be about 0.155 m from its current pose. Rotating to the downward wxyz quaternion [0.5, −0.5, 0.5, 0.5] would require roughly 0.8 rad, within the 1.0 rad limit. However, the white car’s position is approximate, and its long axis is diagonal. In the high view, it extends roughly from pixel (172, 295) at the bottom left to (212, 267) at the top right, giving an image vector of approximately (+40, −28) pixels. Does this correspond to a world direction with positive X and positive Y components? Closing along world X would be partly along its long axis and might contact its ends, but a closing direction perpendicular to the long axis would be preferable for gripping across its width. I could estimate its roof center and orientation from the high image using the assumed table plane at Z = 0.75 m. I will handle that after placing the pepper rather than add simultaneous grasping complexity now. For this action, I can hold the left arm at its current pose and command its gripper open. Both arm targets are required, but both arms do not need to translate. Opening the empty left gripper would also release any remaining contact. For the right arm, I could hold its current orientation or finish the small adjustment to the intermediate wxyz quaternion [0.65322369, −0.27059807, 0.27059803, 0.65333927]. I expect the tilted posture to make the precheck easier. The proposed 0.132 m translation may pass, although a shorter alternative at (0.17, −0.07, 1.10) m, with an estimated distance of 0.098 m, could reduce risk. I need to account for the held pepper’s offset from link6 when choosing the basket waypoint. At the current orientation, I tentatively estimate local +X has world components near Y = 0.126 and Z = −0.095. At the exact intermediate 45° orientation, local +X is (0, 0.707, −0.707). Using an object-center offset of 0.1576 m along that direction gives an estimated center at (x, y + 0.111, z − 0.111) m. Thus, at the current right link6 position, the pepper center would be approximately (0.262, 0.006, 0.993) m, consistent with its apparent position above the red basket’s front rim. For the middle basket center at X = 0 m and Y = 0.057 m, a link6 target of (0, −0.054, 1.041) m in the intermediate orientation would place the estimated pepper center at (0, 0.057, 0.930) m. A rounded target at (0, −0.054, 1.04) m is about 0.294 m from the current pose, exceeding the 0.25 m limit. I could first use (0.14, −0.08, 1.08) m, then move to (0, −0.054, 1.04) m. The pepper’s current bottom may be near Z = 0.94 m. Lowering its center to 0.93 m might put the bottom near 0.88 m, above the estimated 0.84 m rim. Would releasing from there give a drop of about 0.12 m to the floor at Z = 0.75 m? With an estimated pepper height of 0.07 m, a center at 0.93 m minus 0.035 m would instead put its bottom at 0.895 m, giving a drop of 0.145 m to the floor. I could lower further: link6 Z = 0.98 m would put the estimated center at 0.869 m and bottom at 0.834 m, just below the rim. That would be acceptable once directly above the interior, but I should avoid the rim during entry. A gentler placement plan is to move over the basket center at link6 Z = 1.10 m, with the pepper center near 0.989 m, then lower link6 to 0.96 m. This would put its center near 0.849 m and bottom near 0.814 m, inside the basket below the 0.84 m rim. Could the fingers contact the rim? The estimated gripper width is 0.1 m and the basket width 0.2 m, so they should fit through the opening if centered. At link6 Z = 0.96 m, the finger bases would remain above while the fingertip center would be near 0.849 m. I will move above the center first, then lower before release. For the immediate action, I will use the right-arm waypoint (0.15, −0.055, 1.104) m with the intermediate quaternion. Its estimated pepper center would be (0.15, 0.056, 0.993) m, high above the gap between the blue and red baskets. X = 0.15 m is near their edges, but the height should provide clearance. I can subsequently move to (0, −0.055, 1.104) m above the blue basket, then lower link6 to 0.96 m. I estimate the immediate waypoint is 0.128 m away. I will hold the left pose and open its gripper, keep the right gripper closed, and use eight control steps.

The right link6 is now at (0.161, −0.061, 1.102) m. I estimate the held pepper’s center at (0.161, 0.05, 0.991) m; in the wrist view, it appears to straddle the edge between the blue and red baskets. I will move the right link6 to (0, −0.055, 1.104) m while retaining the tilted orientation. The target is about 0.161 m away, and the IK precheck may now pass with this posture. Could I simultaneously move the open left gripper toward the white car? Its current tilted quaternion has a w component near 0.641. A target above the white car at (−0.24, −0.21, 1.05) m with downward wxyz quaternion [0.5, −0.5, 0.5, 0.5] would be about 0.175 m away and require about 0.78 rad of rotation. The arms’ prechecks are independent, but a failure for either would prevent both from moving. I could use a smaller left approach target at (−0.30, −0.16, 1.09) m while holding its current orientation, though that would require additional motions. Another option is a staging pose at (−0.26, −0.20, 1.10) m with the tilted orientation whose quaternion w component is about 0.653, approximately 0.139 m away. That seems safe with the gripper open and clear of the bus; I could align over the white car after placing the pepper. I also considered a downward-facing target at (−0.27, −0.20, 1.08) m, approximately 0.157 m away with about 0.8 rad of rotation. Moving toward the robot along Y may be easier, but combining rotation and translation near the joint limits could still fail the precheck and delay the pepper transfer. I will therefore hold the left arm in place with its gripper open for this action. I will move the right arm toward (0, −0.055, 1.104) m for eight control steps, keeping the pepper clamped. Once the right arm is above the blue basket, I can resume simultaneous work.

The precheck nearly succeeded, with a position error of about 6.6 mm. A closer right-arm waypoint at X = 0.02 m instead of 0 m would require an X change of −0.141 m and would likely pass. I could also adjust Z to 1.10 m and Y to −0.06 m to make the target easier to reach. I will use the right link6 target (0.02, −0.06, 1.10) m, approximately 0.142 m from its current position, and execute eight control steps. I expect this nearby waypoint to pass the precheck.

The right link6 is at X = 0.053 m, nearly centered, and the wrist view shows the pepper over the blue basket. The arm appears to cross prominently in the high-camera view, but that seems acceptable. I will make the final correction toward X = 0 m, roughly 5 cm left, with a target of (0, −0.055, 1.10) m over five control steps. I could simultaneously move the open left gripper toward a staging pose for the white car. One option is (−0.30, −0.17, 1.09) m with its current orientation, an estimated distance of 0.09 m, which seems safe. Another is (−0.28, −0.20, 1.08) m, possibly with a downward orientation. However, if the left target fails the precheck, the right arm will not move either. An easier alternative is (−0.32, −0.14, 1.095) m with the current orientation, an estimated distance of 0.053 m, but that would make little progress toward the car. Simultaneous motion would not consume extra control steps, but I prefer to avoid the added complexity here. I will hold the left arm in place with its gripper open, keep the right gripper closed, and use five steps for the pepper’s final centering correction. I can handle the left arm separately after placing the pepper.

The right link6 is at X = 0.021 m, which is close enough to the basket center. I estimate the pepper’s center at (0.021, 0.049, 0.983) m. With the tilted orientation held fixed, I am using an object-center offset of +0.111 m along Y and −0.111 m along Z relative to link6. I could lower link6 to Z = 0.98 or 0.97 m. At 0.97 m, I estimate the pepper’s center at Z = 0.859 m and its bottom at 0.82 m, above the basket floor at 0.75 m. Releasing there would give an estimated drop of 0.07 m. The fingertips would be near the object center at 0.859 m, slightly above the 0.84 m rim, while the pepper’s bottom would be inside. Could the fingers straddle the rim? The estimated opening width is 0.22 m and the gripper width is 0.1 m, so they should fit. I could lower farther to link6 Z = 0.94 m, putting the estimated object center at 0.829 m and its bottom at 0.79 m, with a release drop of 0.04 m. The fingertips would then be below the 0.84 m rim but inside the basket. Would the fingers remain above the object’s bottom at 0.79 m? That seems safe, but 0.97 m may already be sufficient for a stable drop. I considered targeting 0.99 m for three steps and inspecting afterward. From the current link6 height of 1.094 m, the target at 0.97 m requires a descent of 0.124 m. I expect three steps to move only about 0.035 m, leaving link6 near 1.059 m, the pepper center near 0.948 m, and its bottom near 0.91 m, still above the rim. Another three steps might bring link6 to 1.024 m, with the center at 0.913 m and bottom at 0.878 m. Three more might reach 0.99 m, with the center at 0.879 m and bottom at 0.844 m, near the rim, followed by two steps toward 0.97 m. These are tentative motion estimates. I could use five steps during the unobstructed part of the descent, but the final approach near contact calls for 1–3 steps, so I will use three-step actions. I could simultaneously move the open left gripper toward the white car, but that approach would involve a potentially significant downward rotation and require monitoring both arms. I will leave that until after releasing the pepper. For this action, I will hold the left arm in place with its gripper open and command three steps toward right link6 Z = 0.97 m, keeping the pepper clamped and the tilted orientation steady.

The right link6 lowered by only 0.022 m, so I should continue for another three control steps. I could target a height of 0.96 m for the same lowering motion. I considered four steps, but the instructions call for 1–3 steps near contact, so I will keep this action to three steps.

I estimate the pepper’s center may now be at Z = 0.935 m, using the right link6 height of 1.046 m minus the estimated 0.111 m vertical offset. Its bottom would be near Z = 0.90 m, still above the basket rim at Z = 0.84 m. In the high-camera view, however, the pepper appears to be at rim height. I should lower it by about 0.07 m and continue with another three control steps.

The right link6 is currently at Z = 1.015 m. I estimate the pepper’s center at Z = 0.904 m and its bottom at Z = 0.869 m, just above the blue basket’s rim at Z = 0.84 m. I will target a link6 height of 0.97 m for another three control steps. This may bring link6 to about 0.984 m, with the pepper’s center near 0.873 m and its bottom near 0.838 m. That should be a suitable release height afterward. I will make this three-step descent first.

With the right link6 at Z = 0.98 m, I estimate the pepper’s center at Z = 0.869 m and its bottom perhaps at Z = 0.83 m, inside the blue basket. This seems suitable for release. I will open the right gripper while holding the left arm in place. The right opening command is currently 0.458, compared with 1.0 before closure. After three opening steps, it might reach 0.84 or 1.0; I am unsure whether it will fully open in that time. I will use three steps and keep the right arm stationary rather than withdraw immediately. Could withdrawing cause an uncontrolled drop? I expect the pepper to fall a few centimeters after release.

The yellow pepper is stable inside the blue basket. The remaining objects are the white car on the left, the yellow car in the center, the green pepper at center-right, the red chocolate bar in the center, and the beige chocolate bar on the right. There are 967 control steps remaining, which should be ample. I could continue using top-down grasps and tilt the objects for placement. For the next left-side car, a shorter path might allow carrying it downward-facing directly to the basket. The yellow bus dropped into the correct basket accidentally; its left gripper opening command reached 0 at obs_000097, suggesting that it may have slipped during rotation because the grasp at its ends was insecure. Tilting earlier and then lowering before release, as I did with the pepper, may improve placement. I should grasp the white car across its width with an appropriate orientation to avoid a premature drop during transport. First, I need to withdraw the right arm from the blue basket into clear space. Its current link6 position is (0.012, −0.053, 0.98) m, with the gripper tilted and open. A vertical lift to Z = 1.10 m is a 0.12 m move. The fingers point forward and downward, so lifting straight up should avoid bumping the pepper or basket. Afterward, the right arm can approach the green pepper or red bar. The open left gripper is above the white basket at link6 position (−0.348, −0.097, 1.095) m in a tilted pose. I estimate the white car’s X and Y coordinates at roughly (−0.24, −0.22) m, though its X coordinate remains uncertain. I can move the left arm toward it while lifting the right arm. The left fingertips may currently be near Y = 0.014 m and Z = 0.984 m over the basket. Moving back toward Y = −0.22 m, toward the robot, while rotating downward should move them away from the basket safely. One possible left approach target is (−0.25, −0.21, 1.08) m with downward wxyz quaternion [0.5, −0.5, 0.5, 0.5]. I estimate the translation at 0.173 m and the orientation change from the current tilted pose, whose quaternion w component is about 0.641, at roughly 0.77 rad, below the 1 rad limit. The precheck might pass because this motion is toward the robot and slightly lower. Alternatively, I could first use a downward-facing staging pose at (−0.30, −0.17, 1.10) m and refine the alignment afterward. A failure for either arm would prevent both from moving, so separate easy moves are another option. For this action, I will use the left staging target (−0.29, −0.19, 1.09) m with the downward quaternion and the right lift target (0.012, −0.053, 1.10) m with its tilted orientation retained. I estimate the left target distance at 0.151 m and the right at 0.12 m, and expect the precheck to pass. Both grippers will remain open, and I will use eight control steps. The current left wrist view shows the basket but not the white car. After the approach, I will inspect that wrist view and use it with the high-camera view from obs_000133 to estimate the car’s actual center and orientation.

The left arm is progressing toward the white car. The right arm has lifted only 0.082 m, reaching Z = 1.062 m, and remains near the basket with its gripper open. Next, I should continue moving the left arm above the white car and raise the right arm to Z = 1.1 m, perhaps then moving it toward the green pepper. In observation 141, I estimate the white car’s center at pixel (410, 370) in the left wrist view and (190, 281) in the high-camera view. Its roof center appears near (193, 279) in the high view and (413, 367) in the wrist view. I could triangulate the roof center to estimate its X, Y, and Z coordinates, but I should identify the same distinctive point in both images. The center of the black roof number “2” might be near (192, 276) in the high view and (401, 358) in the wrist view. Another tentative correspondence for the small circular roof number is (192, 276) and (399, 357), respectively. I can estimate the car’s orientation from its footprint and roof, or use the high-camera view with the known Z = 0.79 m plane. Is the candidate roof point toward the front of the car? I will first create gridded crops of the white car from the high and left wrist images in observation 141 to clarify the matching points.

I’ll inspect the gridded crops of the white car from the high and left wrist cameras to identify matching roof points and refine its center and orientation. This will help align the fingers for a grasp across its width.

The white car’s long axis appears to run from the front-left, lower point at pixel (172, 293) to the back-right, upper point at (207, 273) in the high-camera view. In the left wrist view, it runs from approximately (356, 402) at the front left to (459, 332) at the back right. The two views show the same orientation. Could the wheel centers provide distinctive matching points? There may be a black wheel on the front-left side near (188, 294) in the high view and a wheel near (354, 367) in the wrist view, but I am uncertain about that correspondence. The hood number 53 appears near (177, 284) in the high view and (370, 401) in the wrist view. The roof number may be near (191, 278) and (393, 357), respectively. I will try triangulating the roof emblem using high-camera pixel (190, 278) and left-wrist pixel (395, 357). I can also use approximate front hood emblem points at (177, 285) and (370, 400). A possible rear spoiler correspondence is (209, 273) in the high view and (462, 331) in the wrist view. These point estimates remain approximate.

I estimate the white car’s center at approximately (−0.26, −0.19) m in world X and Y, with its top at Z ≈ 0.78 m. Its long axis runs from the estimated front point (−0.301, −0.213) m to the rear point (−0.222, −0.170) m, giving an X–Y vector of (0.079, 0.043) m. The angle atan2(0.043, 0.079) is approximately 28.6° in the world X–Y plane. Thus, the long axis points toward +X and +Y, or up and right in the high-camera image. The width direction is perpendicular to that long axis, with an X–Y vector of (−0.043, 0.079) m. I want the gripper’s local Y closing axis aligned approximately with (−0.479, 0.883, 0), or the opposite direction, (0.479, −0.883, 0). My rough version of the first direction is (−0.47, 0.88, 0). The gripper’s local X axis should remain top-down at (0, 0, −1). I can obtain this alignment by applying a yaw rotation about world Z to the base top-down quaternion. The base top-down quaternion is [0.5, −0.5, 0.5, 0.5] in wxyz order. It maps local Y to (−1, 0, 0), so the fingers close along world X. Applying a world-Z yaw θ gives q_world = qz(θ) × q_down and keeps local X pointing downward. Local Y then becomes (−cos θ, −sin θ). To obtain (−0.479, +0.883), toward the upper left across the car’s width, I need cos θ = 0.479 and sin θ = −0.883, giving θ = −61.5°. The opposite closing direction would use cos θ = −0.479 and sin θ = 0.883, giving θ = 118.5°. That swaps the fingers and requires a larger rotation, so I will choose −61.5° from the base orientation. I will compute the resulting quaternion, Rz(−61.5°) × q_down, and its angular distance from the current left-arm quaternion [0.586, −0.395, 0.397, 0.585]. The current pose is still tilted; I estimate its angular distance from the base top-down pose at about 0.65 rad. Adding the −61.5° yaw may make the whole orientation change exceed the 1.0 rad command limit, perhaps reaching about 1.4 rad, so an intermediate orientation may be needed. One option is to finish the base top-down alignment above the car, then rotate the yaw at a safe height. Alternatively, I could target the new orientation directly if its calculated angular distance is below 1.0 rad. I will calculate that distance and a halfway orientation before deciding.

The desired left-gripper orientation is approximately [0.685, −0.174, 0.685, 0.174] in wxyz order. Its angular distance from the current orientation is 1.13 rad, exceeding the 1 rad command limit, so I need an intermediate orientation. I can use the halfway quaternion [0.6618, −0.2964, 0.5638, 0.3954], requiring about 0.565 rad of rotation, while moving above the white car to (−0.26, −0.19, 1.08) m. I estimate that translation at 0.069 m. I can simultaneously finish raising the open right gripper to Z = 1.1 m and move it toward the green pepper, whose estimated X and Y coordinates are (0.16, −0.19) m. The right link6 is currently at (0.016, −0.058, 1.062) m in a tilted pose. One possible target is (0.16, −0.17, 1.08) m with a downward orientation, requiring approximately 0.78 rad of rotation and 0.19 m of translation. The precheck might pass. This approach from the blue basket crosses above the red bar near (0.09, −0.12) m in X and Y. At link6 Z = 1.08 m with the gripper pointing down, I estimate the fingertips at Z = 0.92 m, above object tops near 0.82 m, so the path appears clear. Instead, I will use a right-arm staging target at (0.10, −0.14, 1.10) m with downward wxyz quaternion [0.5, −0.5, 0.5, 0.5]. I estimate its translation at 0.138 m and rotation at 0.78 rad, then I can refine the green pepper’s position in the next observation. The left arm will move from X = −0.316 m toward −0.26 m, while the right moves from X = 0.016 m toward 0.1 m; their approximately 0.36 m separation appears sufficient to avoid contact. I will keep both grippers open, use eight control steps for these simultaneous approach motions, and inspect the result.

The left gripper is close to its halfway orientation, and the yaw makes the white car appear vertical in the wrist image. The car’s image center is now near (363, 230). The right gripper is still tilted, with quaternion w component approximately 0.599, and is moving toward the green pepper. In the high-camera view, the white car appears unchanged, the red bar is near pixel (365, 239), and the green pepper is near (410, 267). Has the beige bar shifted to (500, 239)? I am not certain. I will finish the left gripper’s yaw alignment and move to a pre-grasp height of 1.02 m. Its current link6 position, (−0.26, −0.19, 1.08) m, matches the previous position target. Its current wxyz quaternion [0.659, −0.304, 0.554, 0.408] is close to the halfway target [0.662, −0.296, 0.564, 0.395]. The final quaternion is [0.68535, −0.17406, 0.68535, 0.17406], with an estimated remaining rotation of 0.56 rad. I could rotate at the current height of 1.08 m first. Does local X currently point partly downward? The halfway orientation lies between the tilted pose and the yawed downward pose, so its downward component may be about 0.8. I estimate the current fingertip height at 0.95 m, about 0.16 m above the car at 0.79 m. At the final downward orientation with link6 still at 1.08 m, the tips would be near 0.922 m, about 0.13 m above the car. This appears safe. I will instead combine the final alignment with a 0.06 m descent to (−0.26, −0.19, 1.02) m over eight control steps. The right link6 is currently at (0.061, −0.102, 1.08) m. I considered a downward-facing staging target at (0.16, −0.19, 1.02) m, estimating a position distance of 0.154 m and a rotation of 0.5 rad; this appears safe. I will use the slightly higher target (0.16, −0.19, 1.04) m with downward wxyz quaternion [0.5, −0.5, 0.5, 0.5]. This should be close to the green pepper, but I still need to refine its actual center from the wrist view. I will move both arms for eight control steps with both grippers open.

The left gripper has not fully reached its final orientation. Its current wxyz quaternion is [0.683, −0.227, 0.642, 0.266], compared with the desired [0.685, −0.174, 0.685, 0.174], with an estimated angular difference of about 0.25 rad. The white car appears vertical and slightly tilted in the wrist image, which looks suitable for the intended grasp across its width. The right gripper is nearly downward-facing, but the green pepper appears near pixel (440, 210), to the right of the expected gripper-center X coordinate of 320. Is the target too far left, or has the arm simply not arrived? The measured right link6 X coordinate is 0.118 m, short of its target at 0.16 m. With the downward orientation, the wrist image’s horizontal axis corresponds to world X; my earlier projection calculation showed that a positive object X offset projects to the right. Thus, the pepper appearing at image X = 440 rather than 320 indicates that I should move the gripper right by about +0.04 m toward X = 0.16 m. I intend to continue toward both arms’ existing targets. Before moving, I will refine the green pepper’s center through stereo triangulation using observation 157 and the known right-camera pose. I estimate its center at (410, 267) in the high-camera image and (440, 211) in the wrist image. A possible stem-center correspondence is high-camera pixel (410, 264) with wrist pixel (439, 212). The small circular stem feature appears near (410, 263) in the high view and (440, 213) in the wrist view, so these estimates remain tentative. I will triangulate the stem using the two views. The white car’s center may be near (190, 281) in the high view and (370, 190) in the left wrist view, although the left gripper’s orientation is not yet final. Its previously estimated world X and Y coordinates, approximately (−0.26, −0.19) m, still seem reasonable.

The refined green pepper center is approximately X = 0.173 m, Y = −0.175 m, with its top at Z = 0.809 m. My previous target, (0.16, −0.19) m in X and Y, is off by −0.013 m in X and −0.015 m in Y. I should update it to (0.173, −0.175) m. The white car’s roof triangulated to approximately (−0.245, −0.197) m in X and Y, compared with my earlier center estimate of (−0.26, −0.19) m. The roof correspondence may be wrong: high-camera pixel (192, 280) may not represent the same point as wrist-camera pixel (376, 176), which might be a roof window. Averaging the car’s long-axis endpoints gives a center near (−0.261, −0.192) m. Another option is to use the body footprint center at high-camera pixel (190, 283) on a Z = 0.78 m plane. In the current left wrist view, the car appears centered near image X = 365 rather than 320, an offset of +45 pixels. Its center may be near (365, 190). With the current yaw and orientation, the image’s horizontal direction follows the closing direction rather than world X, so I may need to adjust along link6 local Y. At the final orientation, the fingertip-center reference should still be pixel (320, 274.7). Does the +45-pixel offset mean the car has a negative local Y coordinate? Is the camera’s horizontal axis along local −Y? Earlier, a point at local Y = +0.04 m projected near image X = 140, while local Y = −0.04 m projected near X = 500. That suggests a rightward image offset corresponds to negative local Y. Should I therefore shift the link6 target along negative local Y? I could calculate the car’s local coordinates using the estimated world center (−0.26, −0.19, 0.775) m and the current pose. I want the object’s local Y coordinate to be zero. Since local Y is the width direction, a possible position correction is R[:, 1] multiplied by the object’s local Y coordinate. If that coordinate is −0.01 m, what would the corrected target position be? The object’s local coordinates are Rᵀ(object − position), and a desired position could be written as object − R × [desired local X, 0, desired local Z]. I need to keep the horizontal and vertical components distinct here. In the final top-down orientation, local X is vertical, while local Y and local Z are horizontal. If the desired local Z offset is also zero, the target’s world X and Y should equal the object’s X and Y. The current link6 position, (−0.259, −0.19) m in X and Y, already nearly matches the estimated object position (−0.26, −0.19) m, which should predict image X near 320. The observed center near X = 365 may therefore indicate an inaccurate object-center estimate or a perspective effect in the chosen image center. I could refine the car center using more reliable distinctive-point correspondences. Its high-camera center may be near (190, 282), and its wrist-view body center near (371, 188). A possible black roof-window correspondence is high-camera pixel (193, 279) with wrist pixel (377, 144), but I am uncertain. In observation 157, the car appears to span image X = 300–435 and Y = 80–290. The black roof window spans roughly X = 350–415 and Y = 128–168, with a center near (382, 148). Its corresponding high-camera point might be (196, 278), or perhaps the dark roof feature near (197, 275). I could crop observation 157 again or inspect the earlier white-car crop. The high view appears to show a dark rear-window feature near (201, 270), while the central roof may be white. The black rectangle in the wrist view may instead be a sunroof toward the upper or rear half, corresponding to the high-view dark feature near (201, 273). One candidate for triangulation is therefore high-camera pixel (201, 273) with wrist pixel (382, 147). Another is the hood emblem at high-camera pixel (174, 286) and wrist pixel (339, 268); the hood’s number 53 may be near (340, 269) in the wrist view. A current gridded crop could help verify these matches. Further triangulation may not be necessary yet. I estimate the width-wise grasp alignment can tolerate about 2 cm. The fingers remain at the image edges, while the car is about 120 pixels wide compared with a 400-pixel finger gap. The 45-pixel horizontal offset corresponds to roughly 1 cm, so I can inspect and correct it after finishing the orientation. I will retain the left X–Y target near its current position, use Z = 1.02 m, and finish the final width-wise orientation. I will also move the right gripper to the refined green pepper center. Both grippers will remain open. I will use six control steps, then check the wrist-view alignment.

The white car is nearly centered in the left wrist view, with its long axis vertical in the image. Its body spans approximately image X = 290–410, giving a center near X = 350, about 30 pixels right of the desired X = 320. The green pepper is centered near image X = 360, about 40 pixels right of 320. The right link6 is still at world X = 0.158 m rather than the target 0.173 m, so it needs a correction of +0.015 m in X and −0.007 m in Y toward the pre-grasp target at Z = 1.02 m. The white car’s actual X–Y center may differ slightly from my estimate. At the final left-gripper orientation, local Y points approximately along world (−0.477, +0.879, 0). A rightward image offset corresponds to a negative local Y offset. I need to check the correction’s sign: moving the gripper along positive local Y would make the object’s relative local Y more negative and move it farther right in the image. To move the object left in the image, I should move the gripper along negative local Y, whose world X–Y direction is (+0.477, −0.879). The image scale at the current object distance might be about 4000 pixels/m. At local X = 0.157 m, the fingertip scale is about 4500 pixels/m, whereas at the object’s current local X of approximately 0.25 m it may be closer to 3000 pixels/m. I estimate that the car’s 30-pixel offset corresponds to about 0.01 m, giving an object local Y coordinate of approximately −0.01 m. Since the object is then at p − 0.01Y relative to the current gripper position p, centering it requires shifting p by −0.01Y. That gives a world X–Y correction of (+0.00477, −0.00879) m and a new left position near (−0.2552, −0.1988) m. This is somewhat consistent with the earlier white-roof stereo estimate of (−0.245, −0.197) m. For the downward-facing right gripper, local Y points along world −X. The pepper’s +40-pixel image offset likewise suggests a local Y offset near −0.01 m, meaning the object is about +0.01 m along world X from the gripper. Moving the gripper by −0.01 local Y therefore means moving it +0.01 m along world X, from 0.158 m to about 0.168 m, close to the refined target of 0.173 m. I will use corrected X–Y targets of (−0.255, −0.199) m for the left arm and (0.173, −0.175) m for the right, then descend. The white car’s top is around Z = 0.78 m, and its body center may be near 0.768 m, based on a tabletop at 0.75 m plus 0.018 m. A link6 grasp height near 0.915 m is one possibility. With the car top at 0.785 m and a width-wise side contact near 0.765 m, link6 at 0.9126 m would put the fingertips near 0.755 m, leaving only 0.005 m above the table. Gripping the upper body at link6 Z = 0.93 m would instead put the tips at 0.7724 m, with the pads contacting near the top. The car is about 0.035 m tall, with a body center near 0.767 m and top near 0.785 m. I will choose link6 Z = 0.925 m, putting the tips at 0.7674 m near mid-body with approximately 0.017 m of table clearance. Its width is about 0.04 m, suitable for closing the pads across it. The green pepper’s top is near Z = 0.809 m and its body center near 0.78 m. I will use right link6 Z = 0.94 m, as for the yellow pepper. The current left and right link6 heights are 1.02 m and 1.031 m. I could first use three-step descents toward 0.96 m and 0.97 m before the final heights. Instead, I will command the final targets of 0.925 m and 0.94 m for three steps, while making the small X–Y corrections and keeping both grippers open. I estimate the actual heights after this short action may be around 0.984 m on the left and 0.994 m on the right, after which I can inspect and repeat as needed.

The white car’s center is near image X = 344, still 24 pixels right of the gripper center. The left arm has only partially completed its correction: its measured X–Y position is (−0.258, −0.193) m rather than the target (−0.255, −0.199) m. The green pepper’s center is near image X = 357, still 37 pixels right of center. The right arm’s measured X is 0.163 m, short of its 0.173 m target. I will continue toward the same targets to finish centering while descending. The car’s image Y center may be around 160, compared with the fingertip reference near Y = 275, suggesting about 0.06 m more descent to grasp it. The pepper’s image Y center is around 220, and it also needs about 0.06 m of descent. The measured link6 heights are 0.987 m on the left and 1.001 m on the right; the targets are 0.925 m and 0.94 m, leaving downward residuals of 0.062 m and 0.061 m respectively. I expect another three steps to produce about 0.033 m of descent, followed by roughly 0.03 m in a further three steps. I will execute three steps now with both grippers open.

The white car’s center is near image X = 338, and its body spans X = 240–435, a width of 195 pixels compared with the 400-pixel gap between the fingers. The green pepper’s center is near image X = 345. Both look well centered. I will make the final descent to link6 heights of 0.925 m on the left and 0.94 m on the right. Their current heights are 0.955 m and 0.968 m, leaving downward residuals of 0.03 m and 0.028 m, respectively. Three control steps might reach those target heights exactly. At the targets, the estimated fingertip heights are 0.767 m on the left and 0.782 m on the right, which look suitable for grasping. I will use three steps with both grippers still open.

The alignment looks good. In the wrist views, the white car’s body is about 260 pixels wide at its middle, compared with a 400-pixel gap between the fingers. The pads should contact its sides as they close. The green pepper is about 270 pixels wide, which also looks suitable. I will close both grippers for three control steps. If the opening stalls, I may use another two steps to continue closure.

Both grasps look secure, with opening commands of 0.345 on the left and 0.382 on the right suggesting contact. I will make a two-control-step test lift, targeting a left link6 height of 0.967 m and a right link6 height of 0.981 m while keeping the orientations fixed and the grippers closed. I should check that the white car moves with its gripper before transporting it.

Both objects appear to have lifted with the grippers. In the high-camera view, the white car moved from approximately pixel (190, 280) to (197, 289). The green pepper may have moved from (410, 267) to (412, 264), although that change is slight and uncertain. Both objects remain fixed relative to their grippers in the wrist views, so I consider the grasps secure. I should place the white car in the white basket beside the yellow bus, and the green pepper in the blue basket beside the yellow pepper, avoiding contact with the objects already inside. The bus appears near pixel (170, 181), while the white basket opening is centered near (190, 177). Its turquoise portion appears near (170, 183), but I am unsure whether it occupies the left-back or left-front part of the basket. I could place the white car on the right side, perhaps at X = −0.23 m, Y = 0.06 m, compared with a possible bus X coordinate of −0.35 m. The bus previously dropped while the left link6 was at X = −0.348 m in a tilted orientation; its object center may then have been near X = −0.348 m, Y ≈ 0.014 m. I estimate the white basket spans X = −0.42 to −0.14 m, with its center near −0.28 m, and the bus is near X = −0.34 m, Y = 0.02 m. To avoid stacking, I could place the white car at X = −0.22 m, Y = 0.08 m, or at X = −0.22 m, Y = 0.04 m. There appears to be room on that side. The yellow pepper appears near pixel (315, 181) in the blue basket, with an estimated world center near X = 0 m, Y = 0.03 m. Possible green-pepper placements are X = 0.05 m, Y = 0.08 m, or X = −0.05 m, Y = 0.07 m. With an estimated basket width of 0.22 m and pepper diameter of 0.055 m, two peppers should fit side by side. I could put the green pepper at X = 0.055 m, Y = 0.06 m, but is the yellow pepper actually at X = 0 m? I will refine the resting objects’ positions by unprojecting their high-camera pixels using the calibration from observation 177 and an assumed object-center height of Z = 0.78 m. That height comes from the earlier basket-floor estimate of 0.75 m and pepper-height estimate of 0.06 m. Using yellow-pepper pixel (317, 181), could its position be near X = −0.006 m, Y = 0.015 m? Using bus pixel (170, 182) at Z = 0.78 m, could its X coordinate be near −0.30 m? I will calculate these estimates before choosing the placement points.

The left gripper’s opening command has decreased to 0.307, and the white car appears secure. The right gripper’s opening command is 0.382, and the green pepper also appears secure. I will move to intermediate link6 positions of (−0.26, −0.12, 1.05) m for the left arm and (0.13, −0.10, 1.05) m for the right arm. I estimate the target distances at 0.081 m on the left and 0.088 m on the right. I expect these short moves to pass the precheck. I will use eight control steps.

The white car appears to have slipped from the left gripper. The left opening command is now 0.037, and the wrist view shows nearly closed, empty fingers with the car near the top of the image. In the high view, the car appears near pixel (190, 235), or approximately (190, 234), on the table near the front of the white basket rather than inside it. This is between the basket containing the bus and the car’s original location. It seems to have fallen about 0.10 m and landed upright, although it may still be falling at this observation. The green pepper remains secure. I must update my understanding and stop treating the white car as held; I can continue transferring the pepper and regrasp the car afterward. Why did the car slip despite the grasp across its width? The left opening command decreased from 0.307 to 0.037 during transport. Perhaps contact with the basket rim pushed the car out. The left link6 is at (−0.26, −0.128, 1.047) m with the fingers pointing down. Its estimated fingertip center is (−0.26, −0.128, 0.889) m, which should project near pixel (197, 228) in the high view if the car were still there. The visible car near (190, 235) might still be in contact, but the wrist view argues against that. The fingertip-center reference is approximately (320, 275) pixels, while the car’s wrist-image center is around (300, 120). The closed fingers are centered near image X = 320 from Y = 250 onward. With the gripper pointing down, a smaller object-image Y coordinate indicates a larger local X distance, farther below link6. This suggests the car has slipped downward along local +X, beyond the fingertips. I consider the gripper empty, but whether the car is already resting on the table or still falling remains uncertain. I should let the car settle before regrasping. I could wait, or continue moving the right arm while opening the left gripper and perhaps retracting it slightly to avoid the car. The high view appears to show the car upright and possibly already static near (190, 235). The next observation can clarify its settled position before I recover it after placing the pepper. The failure might also reflect unstable contact caused by the left gripper’s yaw, rotation of the car within the grasp, or slipping on the smooth plastic. I grasped at link6 Z = 0.927 m, giving estimated fingertips at Z = 0.769 m, with the car’s body top near 0.785 m and bottom near 0.75 m. That should have put contact near the middle. Acceleration during transport could nevertheless have caused slipping. I initially wondered about a speed of 0.02 m per step; the previous 8 steps at 0.04 seconds each lasted 0.32 seconds, and a 0.08 m transfer implies about 0.25 m/s. That does not seem especially fast, but the native controller may jerk. Another possibility is that the car was snagged on the gripper body rather than firmly held and fell when the arm translated. For recovery, I could retain the grasp across the width but lower link6 slightly to Z = 0.915 m for more contact. That would put the tips near 0.757 m, about 0.007 m above the assumed table. Gripping the car’s ends along its length, as with the bus, is another option, but I prefer the width grasp. I should verify closure contact and use a larger test lift: the previous 0.02 m lift appeared to move the car, but a 0.05 m lift may give stronger confirmation. I can then transport it with shorter actions of 3–5 steps to slow down and inspect more frequently. The right arm is currently at (0.139, −0.116, 1.047) m with the green pepper held. A waypoint at (0.10, −0.04, 1.047) m is approximately 0.084 m away toward the blue basket. I could localize the displaced white car now from the high and wrist views, but it may still be falling. I considered a 3-step wait, though robot_wait requires at least 10 steps; a 10-step wait after preparing the arms is possible. Continuing the pepper transfer instead will also provide a new observation in which I can check whether the car has settled. For this action, I will hold the left arm at its current pose and open its empty gripper. I expect this to avoid contact with the car. I will keep the right gripper closed and move toward (0.10, −0.04, 1.047) m for five control steps, preserving its orientation. Then I will inspect the pepper’s transfer and the white car’s settled position.

The white car may now be on its side. In the high-camera view, it appears near pixel (216, 223), with what may be its side and wheels visible. The left wrist view also leaves me uncertain whether it is resting on its side or roof. I should inspect its orientation later. The green pepper is still held by the right gripper. I will continue moving the right link6 toward (0.08, 0.0, 1.043) m for five control steps. I estimate the target distance as 0.094 m, with changes of +0.085 m along Y and −0.043 m along X. I could move the open left gripper to a safer staging pose above the fallen car, provided it does not interfere, or begin localizing a regrasp from the current wrist view, where the car is partly visible at the top left. Using high-camera pixel (216, 223) and an assumed height of Z = 0.78 m, my initial rough X–Y estimate is (−0.23, −0.02) m. The approximate unprojection gives (−0.214, −0.036) m, so I would use a car position near (−0.215, −0.036) m, close to the basket front. The current left link6 position is (−0.26, −0.128, 1.047) m, with its gripper open. The car is to its right and forward, with a Y offset of approximately +0.092 m, rather than directly underneath. That is consistent with its position at the top left of the wrist view. A possible approach target is (−0.215, −0.036, 1.02) m, with an orientation suited to the car’s new resting orientation if it is on its side. To avoid dividing my attention, I will finish placing the green pepper first. For now, I will hold the left arm in place and move only the right arm for five steps.

Forward motion with the gripper pointing downward is still failing the IK precheck from link6 Z = 1.043 m, Y = −0.085 m toward Y = 0 m. I could try a shorter move, lower the arm, or tilt the gripper. A right-arm target of (0.10, −0.06, 1.02) m would involve an estimated horizontal move of 0.033 m and a descent of 0.023 m, and would likely pass. However, I estimate the pepper’s bottom at that height as 0.75 + (1.02 − 0.941) = 0.829 m, about 1 cm below the 0.84 m rim. At link6 Y = −0.06 m, possibly near a front rim at Y ≈ −0.02 m, moving forward could cause a collision. Keeping Z = 1.043 m until the pepper is above the opening would be preferable, but the solver is struggling. Lowering only to Z = 1.03 m would put the estimated bottom at 0.839 m, barely at rim height, so clearance would still be marginal. I could inspect the current joints to understand the constraint; joint 3 might be around 2.04 rad with the right gripper downward at Y = −0.085 m and Z = 1.043 m. Instead, I will use the intermediate tilted posture that worked for the yellow pepper. The green pepper appears securely grasped and less likely to slip. The white car can wait while I finish this placement. I will hold the right link6 at (0.123, −0.085, 1.043) m and rotate to the intermediate wxyz quaternion [0.65322369, −0.27059807, 0.27059803, 0.65333927], keeping its gripper closed. This is approximately a 0.785 rad rotation with no translation. I expect the pepper to swing forward and upward, possibly ending over the blue basket’s front rim near Y = 0.026 m and Z = 0.932 m, with safe clearance. Its X coordinate would remain 0.123 m near the basket’s right edge; afterward, I could translate toward X = 0.06 m. I will use eight control steps and hold the left arm in place with its gripper open.

The green pepper remains secure, and the right gripper is tilted about 25° from its downward-facing pose. The pepper is now over the gap between the blue and red baskets. I estimate about 0.5 rad of rotation remains to reach the intermediate carrying orientation. I could simultaneously move the right link6 to X = 0.09 m and Y = −0.06 m, but I will keep its position fixed to reduce the risk of dropping the pepper. I will use eight control steps to finish the tilt.

The right gripper’s quaternion has a w component near 0.628, close to the intermediate pose’s 0.653, with about 0.2 rad of rotation remaining. I could move to a placement link6 target of (0.06, −0.055, 1.02) m while completing that orientation. From the current position (0.121, −0.082, 1.046) m, the position change would be (−0.061, +0.027, −0.026) m, with an estimated distance of 0.072 m. I expect this target to pass the precheck. I am uncertain about the current tilt. Does the quaternion w component of 0.628 correspond to about 52° from downward, compared with the intermediate 45° pose? Using 0.5 for the downward pose and 0.707 for the horizontal pose, I estimate the current orientation is about 65% of the way between them, with local X having forward and downward components of roughly 0.8 and 0.6. This gives an estimated pepper-center Y coordinate of −0.082 + 0.126 = 0.044 m and Z coordinate of 1.046 − 0.095 = 0.951 m, above the front opening. At link6 position (0.06, −0.055, 1.02) m with the intermediate orientation, I estimate the pepper center would be (0.06, 0.056, 0.909) m, above the floor within the basket, with its bottom at 0.874 m and a release drop of about 0.1 m. Alternatively, I could target (0.06, −0.055, 0.98) m directly, giving an estimated center height of 0.869 m and bottom height of 0.834 m, similar to the previous pepper placement. The Z change would be −0.066 m, with an estimated total position distance of 0.093 m. This may pass now that the gripper is tilted. I will choose this lower target with the intermediate orientation and use six control steps to center and lower the green pepper together. Its intended center at X = 0.06 m would be 0.067 m from the yellow pepper’s estimated X coordinate of −0.007 m, which should avoid contact with it.

The right link6 is currently at (0.094, −0.069, 1.02) m, with its orientation close to the intermediate carrying pose, and the green pepper is still held. I will continue toward the final placement target at (0.06, −0.055, 0.98) m for three control steps, then release the pepper.

I will open the right gripper to release the green pepper over three control steps, keeping the right arm stationary and holding the left arm in place.

Both peppers are now in the blue basket. Four objects remain: the fallen white car near the white basket, the central yellow car, the red chocolate bar, and the beige chocolate bar. I can use the left arm to recover the white car and the right arm for the yellow car or chocolate bars. The right gripper is open above the blue basket; it should withdraw to Z = 1.10 m before approaching another object. The white car appears to be lying on its side just outside the front of the white basket. Could I push it into the basket? I prefer to find a stable grasp and place it. Its vertical height on its side may be about 0.04 m, roughly the wheel diameter. Could a horizontal grasp across the body width work? The left gripper is open in its yawed top-down orientation at link6 position (−0.26, −0.128, 1.047) m. I estimate the car’s X–Y position at approximately (−0.214, −0.035) m, and it appears at the top left of the current wrist image. I will approach and inspect it more closely. In the high-camera image, the car’s long axis runs approximately from its front at pixel (207, 237) to its rear at (224, 211), giving an image vector of (17, −26) pixels. Does its world long axis still point toward +X and +Y? It appears more nearly vertical in the image, with a tentative long-axis angle of about 70°. Are the wheels facing the camera? I seem to see two black wheels on the right and the roof on the left, suggesting that it lies on its left side. A top-down grasp across its width, perpendicular to the long axis, might contact the wheels and body securely. Grasping the ends along the long axis is another possibility if lying on its side makes the width too narrow. I should inspect its shape from the wrist camera before choosing. I could approach at (−0.215, −0.04, 1.04) m with the current yawed orientation, or use the base top-down orientation without yaw if that is easier. I also considered an approach height of 1.02 m and changing the yaw. The current yaw is −61.5°, chosen to close across the width when the original long-axis angle was 28.5°. If the new long-axis angle is about 60°, the desired yaw would be −(90° − 60°) = −30°. I can make that adjustment later; first I will get closer while retaining the current orientation and camera view. For this action, I will target the left link6 at (−0.215, −0.04, 1.04) m with its current orientation and gripper open. I estimate the target distance as 0.112 m. The car is near Y = −0.04 m, and the basket’s front rim may be near Y = −0.01 m, or roughly 0 m. At link6 Z = 1.04 m, I estimate the fingertips at Z = 0.882 m, above the rim at approximately 0.84 m, so this approach appears safe. I will also withdraw the open right gripper vertically to Z = 1.10 m at its current X–Y position, retaining its intermediate tilted orientation; that target is 0.116 m away. I will use six control steps for both arms, then inspect the new observation.

The left arm has only partially completed its approach, reaching X = −0.233 m and Y = −0.077 m. The white car appears near pixel (300, 120) at the top center of the wrist view, lying on its side with the number 53 visible and its wheels on the right. Is it resting on its left side? The former roof appears vertical and faces the wrist camera, while the wheels point right in the image. My working interpretation is that the car has rolled about 90° around its long axis, which remains diagonal in the world X–Y plane. I need to reconsider the grasp surfaces after that roll. The wheel diameter is about 0.035 m, and the overall height may be about 0.045 m. Could the fingers grip the roof and underbody? The car’s original width direction now points vertically, so a top-down gripper closing horizontally cannot grasp across that original width. It could instead contact the front and rear bumpers along the long axis, or the roof and underbody edges across the narrow horizontal thickness. The broad visible side, including the door marked 53, appears to face upward. I estimate this side face is about 0.09 m long and 0.035 m thick. The original height direction may now lie horizontally, perpendicular to the long axis. Grasping across that short horizontal dimension seems preferable, with contact on the roof and underbody edges rather than the door sides. I should align the closing direction with the car’s new orientation. The current local Y axis is approximately (−0.477, 0.879), giving a closing-axis direction of 118.5°, or the equivalent line at −61.5°. This was perpendicular to the original long-axis angle of 28.5°. If the car’s long axis changed to about 60° after falling, the desired closing line would be 150°, equivalently −30°. The current closing line would be off by 31.5°. It might still grip diagonally across the side, but that seems less stable, so a yaw of −30° is one candidate. A more recent estimate from the high-camera view places the car’s endpoints at pixels (202, 236) and (231, 211), giving an image vector of (29, −25). Using an approximate plane mapping, this points toward positive world X and Y, with a possible world angle of 54°. The perpendicular closing line would then be 144°. Would that require yaw −54°? The base closing direction is 180°, since local Y points along world −X, and a yaw θ changes it to 180° + θ. The general choice is therefore θ = long-axis angle − 90°. For a 54° long axis, that gives yaw −36° and a local Y direction of 144°. I could use −36° instead of −30° and will calculate both candidate orientations and their distances from the current orientation. I also need a more precise 3D center for the car. Its high-camera center appears near pixel (216, 223), perhaps at Z = 0.775 m. Because it is on its side, the visible door surface may be near Z = 0.79 m, with the original width of about 0.04 m extending above the table; the body center may be near Z = 0.77 m. I could unproject pixel (216, 223) using Z = 0.78 m. Stereo triangulation offers another way to refine the position. The side number 53 may be near (216, 224) in the high view and (306, 144) in the wrist view. In observation 232, I also estimate the wrist marking near (305, 141), with a possible high-view match near (214, 223). I could make gridded crops to identify the correspondence more clearly, or try approximate matches directly. Another tentative reading places the high-view marking near (216, 222) and its wrist center near (307, 143). The wheel correspondences are harder: possible high-view centers are (219, 211) and (207, 231), with wrist centers near (286, 44) and (348, 186). The number seems easiest to match. I will use observation 232 to try triangulating high-camera pixel (214, 224) with wrist pixel (306, 143).

The triangulated center of the car’s number marking is approximately (−0.230, −0.070, 0.787) m. The front wheel is near (−0.237, −0.094, 0.794) m, and the rear wheel is near (−0.206, −0.047, 0.795) m. I estimate the car’s X–Y center at (−0.222, −0.070) m, rather than my earlier estimate of (−0.215, −0.04) m. The current left link6 X–Y position, (−0.233, −0.077) m, is already nearly above that center. I will target (−0.222, −0.070, 1.02) m with a −36° yaw and wxyz quaternion [0.6300, −0.3210, 0.6300, 0.3210], requiring about 0.445 rad of orientation change. The front-to-rear X–Y vector is approximately (0.0318, 0.0461) m, giving a long-axis angle of 55.4° and a corresponding yaw of −34.6°. The chosen −36° yaw should align the fingers across the car’s narrow thickness. The right link6 is currently at (0.067, −0.06, 1.052) m, with the gripper tilted and open. I could approach the beige chocolate bar near X = 0.38 m, Y = −0.09 m, or the red chocolate bar near X = 0.09 m, Y = −0.123 m. The red bar is closer and more central, so I will handle it first and place it in the right basket. The yellow car near (0.02, −0.23) m in X and Y also remains. I will assign the left arm to the white car followed by the yellow car, and the right arm to the red bar followed by the beige bar. I do not yet have a precise red-bar position from triangulation. The current right wrist view shows only the basket, so I can refine the bar’s location through stereo after approaching it. Its high-camera location is near pixel (365, 239), and I tentatively estimate its center at (0.10, −0.12, 0.775) m. I will move the right link6 above it to (0.10, −0.12, 1.02) m with downward wxyz quaternion [0.5, −0.5, 0.5, 0.5]. This requires about 0.785 rad of orientation change and a position change of (+0.033, −0.06, −0.032) m, with an estimated distance of 0.075 m. I will execute both approaches together for six control steps, keeping both grippers open. The left yaw rotation and 0.02 m descent appear safe above the car near the basket. The right arm’s open-gripper approach from the basket toward the tabletop also appears clear.

The left gripper is partway toward the −36° yaw target. Its current wxyz quaternion is approximately [0.66, −0.255, 0.659, 0.255]. The car appears vertical in the wrist image and centered near image X = 310. The right gripper is still tilted rather than fully downward-facing. The red bar appears horizontal or diagonal in its wrist view, centered near pixel (320, 320). The red bar’s long axis may run mostly along world X with a negative Y component. In the high-camera image, it extends approximately from (349, 233) to (382, 244), giving an image vector of (+33, +11) pixels. In the right wrist image, it extends roughly from (238, 275) to (413, 360). Increasing image V corresponds to negative world Y, toward the robot, so I tentatively estimate its world long-axis angle at −30°. The chocolate bar is long and thin, approximately 0.09 m by 0.025 m. I prefer to grip across its short width, perpendicular to its long axis, by aligning the gripper’s local Y closing axis with that direction. The base downward quaternion, [0.5, −0.5, 0.5, 0.5] in wxyz order, closes along world X, whose axis can be described by a line at 180° or 0°. If the bar’s long axis is at −30°, that closing axis is only 30° from its length and would grip mostly along the long dimension. The desired closing line is therefore approximately 60°. Starting from the base closing direction of 180°, a yaw of −120° would produce that direction. A yaw of +60° instead produces a local Y direction at 240°, which lies on the same 60° closing line with the fingers swapped. Since the gripper is symmetric, either sign of local Y should work. I will choose +60° rather than −120° to reduce the rotation, using q = Rz(+60°) × q_down. This keeps local X downward and aligns local Y across the bar’s width. The whole orientation change from the current right quaternion, approximately [0.593, −0.387, 0.387, 0.59], might be about 1.5 rad because of the yaw; I need to calculate it. Gripping along the length with the base downward orientation is another possibility: the estimated 0.09 m length is close to the possible maximum opening of 0.1 m. However, contact at the ends could slip as it did with the bus, so I prefer the width grasp. I will refine the red bar’s actual long axis and center through stereo triangulation using observation 238. My approximate right-wrist corner estimates are A, upper left, at (242, 270); B, upper right, at (395, 310); C, lower right, at (426, 365); and D, lower left, at (224, 326). The corresponding high-camera corner estimates are A at (351, 232), B at (380, 240), C at (384, 248), and D at (346, 240). For the calculation, I will use endpoint-center correspondences: high-camera pixel (348, 236) with wrist pixel (240, 300) for the left end, and high-camera pixel (383, 244) with wrist pixel (408, 338) for the right end. I will handle the beige bar later. The left car does not need more stereo localization now. I will finish the left yaw alignment and approach at link6 position (−0.222, −0.07, 1.0) m with yaw −36°. Its current link6 height is 1.021 m. I estimate the car’s exposed side top at Z = 0.795 m and the grasp center at Z = 0.77 m. An eventual link6 target height of 0.915 m would give a deeper grasp with fingertips near Z = 0.757 m. I will approach at 1.0 m before descending. For the right arm, I could first finish the base downward orientation without yaw to obtain a better view, then rotate by +60°. Alternatively, I could directly use an intermediate orientation between the current pose and the yawed downward target while staying above the red bar at (0.10, −0.12, 1.04) m. I will calculate the target quaternion, its angular distance from the current orientation, and a halfway orientation before deciding.

The red bar’s long-axis vector in world X and Y is approximately (0.08, −0.0197) m, giving an angle of −13.8°, rather than my earlier estimate of −30°. The perpendicular closing line should be at 76.2°. I initially considered yaw −13.8°, but I need to distinguish the bar’s angle from the gripper’s yaw. The base gripper’s local Y direction is at 180° + θ, so a yaw of −103.8° would align it at 76.2°. The opposite local Y direction, at 256.2°, gives the same closing line and uses yaw +76.2°. I will therefore use about +76° rather than +60°, with the target orientation formed by Rz(76.2°) multiplied by the downward orientation. The refined red-bar center is approximately (0.0993, −0.0977) m in world X and Y, rather than Y = −0.12 m. The right link6 is currently at (0.097, −0.115) m in X and Y, about 1.7 cm toward the robot from that center. I should adjust its Y target to −0.098 m. The left gripper still needs about 0.22 rad of rotation to reach its −36° yaw target for the car. For the right gripper’s revised yaw target, I estimate the whole orientation change may be about 1.2 rad, perhaps 1.25 rad, which would exceed the 1.0 rad command limit. I will calculate the target quaternion and its distance from the current orientation, along with a halfway orientation to use as an intermediate pose.

The right gripper’s target yaw is about +76°, with wxyz quaternion [0.08495, −0.70199, 0.08495, 0.70199]. The orientation change from its current pose is 1.386 rad, so I will first use the halfway quaternion [0.36057, −0.57894, 0.25110, 0.68685]. This is a substantial rotation. I am unsure of the current local X tilt; could rotating the open fingers bring them close to the bar or table? The current right link6 height is 1.022 m. I estimate the intermediate orientation’s local X downward component at about 0.7, placing the fingertips near Z = 0.91 m, about 0.14 m above the bar at Z = 0.77 m. At the final downward orientation, the fingertips would be near Z = 0.864 m, still above the bar. This appears safe. I will target the right link6 at (0.099, −0.098, 1.04) m above the red bar’s estimated center, using the halfway quaternion. The left link6 target will be (−0.222, −0.07, 1.0) m with the −36° yaw alignment for the car. I will keep both grippers open and use six control steps, then finish the right gripper’s alignment.

The left gripper has reached its intended orientation. In the wrist view, the car’s center is near pixel (300, 165), its narrow width along image X is about 100 pixels, and the finger gap is about 400 pixels. The alignment looks suitable. I am considering a left link6 grasp height of 0.915 m from the current 1.0 m height. One option is to descend for three steps toward 0.96 m, then toward 0.92 m. The right gripper is still short of its halfway orientation. Its current wxyz quaternion is approximately [0.515, −0.463, 0.342, 0.635], compared with the halfway target [0.360, −0.579, 0.251, 0.687]. I estimate the remaining orientation difference at about 0.5 rad, perhaps 0.55 rad. Could I continue directly to the final yaw of about 76°, with wxyz quaternion [0.0849, −0.702, 0.0849, 0.702]? The angular distance from the current pose might be around 1.0 rad, so I will target the halfway orientation again first. I considered six steps to bring the right gripper to the halfway orientation at a link6 height of 1.04 m, but robot_act applies the same step count to both arms. Since the left arm is approaching grasp height, I will use three steps; the right wrist may rotate only about 0.2 rad during that action. I will command the left height of 0.915 m, tentatively expecting it to reach about 0.966 m after three steps, while continuing the right wrist toward its halfway orientation with both grippers open. Then I will inspect the observation.

The white car’s center is near pixel (300, 220) in the left wrist view, while the target contact location is at image Y = 275. The left link6 still needs to descend 0.056 m toward the grasp-height target of 0.915 m. The right wrist’s rotation is progressing slowly. I could hold it at its current pose with the gripper open while grasping the car, then resume its alignment. Instead, I will use another three control steps to continue the left descent toward 0.915 m while rotating the open right gripper toward its halfway orientation target.

The left gripper’s opening command unexpectedly changed to 0.667 despite the open target. At obs_000250, its measured link6 position is (−0.227, −0.073, 0.949) m, and its orientation is slightly off the previous target. Could contact with the car or white basket explain the opening change? The feedback reports no error, and the step ID advanced by three. I wonder whether contact interrupted the action, whether the native controller changed the opening automatically, or whether physics pushed the fingers together. However, the reported opening is the latest interpolated controller command, not a measured finger gap, and it can differ from the requested boolean endpoint. I do not know why it changed. The white car appears to have rotated from diagonal to nearly vertical in the high-camera image and moved closer to the basket, perhaps to pixel (215, 226). A finger may have nudged it during descent. In the wrist view, the car is large and centered near pixel (340, 250), between the fingers. It may now be almost upright, but it still appears outside the basket. This unexpected movement could indicate a collision, so I should stop descending and reassess the contact and alignment. The current link6 height of 0.949 m may already be suitable for grasping. I estimate the car’s exposed side top near Z = 0.80 m and the fingertips near Z = 0.791 m. Its wrist-image center at (340, 250) is close to the expected fingertip-center pixel (320, 275), and the fingers appear to bracket its body width. A gentle closure followed by a test lift might secure it, but the basket wall could interfere. The basket occupies the upper-left wrist view; a black finger is near pixel (130, 350), while the wall is near (170, 230). The finger may be touching the front wall, which could prevent proper closure. I should avoid pressing the car against the basket. Possible alternatives are to pull the car away before regrasping, shift the gripper slightly right away from the basket, or grasp along the car’s long axis. I tentatively estimate the car’s current center near X = −0.21 m, Y = −0.06 m, with the basket front near Y = −0.005 m. At yaw −36°, the gripper’s local Y closing axis has approximate horizontal components (−0.809, 0.588), along a line at 144°. One finger points toward the basket and the other toward the table, so the wall could obstruct one side. Rotating to close along the car’s long axis, now roughly at 90° in the world plane and along world Y, would put the fingers in front and behind it. However, the basket remains behind the car, and there may be too little space for that finger. A tentative recovery plan is to close gently at the current alignment, lift 0.02 m, and move toward the robot to Y = −0.1 m to clear the basket, then regrasp if necessary. The car is already between the fingers, so closure seems plausible, though the 0.667 opening command does not prove contact or a grasp. I will first command closure for two control steps and inspect before lifting. I will hold the left arm at its measured position (−0.227, −0.073, 0.949) m and measured wxyz quaternion [0.632, −0.316, 0.625, 0.332]. This is close to the desired yaw −36° quaternion [0.630, −0.321, 0.630, 0.321], but retaining the measured orientation avoids additional left-arm movement. I considered holding the right wrist too, but it remains open and high above the red bar, so continuing its alignment appears safe. I will let it rotate toward the halfway orientation for the same two steps, then inspect the left closure. The immediate action is closure only on the left, with no further descent, while the right wrist continues toward its halfway target.

The white car is between the left fingers, and the opening command of 0.233 suggests likely contact. I will make a two-control-step test lift toward a left link6 height of 0.975 m, a 2.6 cm increase, while holding its orientation steady. The right wrist is close to its halfway orientation: its current quaternion has a w component of about 0.386, compared with about 0.360 for the halfway target. Could the remaining orientation distance to the final yaw of about 76° be roughly 0.7 rad? I can target that final orientation now; two steps will likely produce only a partial rotation, which appears safe. I will keep the right gripper open at essentially the same position while the left gripper remains closed during the lift. Afterward, I will check whether the car moves with the left gripper.

Did the white car lift securely? In the high-camera view, it appears near pixel (206, 224), compared with (209, 235) before the lift. Its image Y coordinate decreased, although I thought lifting would typically increase image V. I am uncertain about that projection change, but the car stayed fixed between the fingers in the wrist view, so I consider it held. The opening command of 0.258 is also consistent with contact. Should I move the car away from the basket before transporting it to avoid the wall and improve the grasp? The left link6 is already at X = −0.227 m, Y = −0.074 m, near the basket front. Placement would require about +0.13 m along Y to reach Y = 0.056 m, with X perhaps near −0.23 m. I could lift vertically to Z = 1.06 m, then make a small forward move while retaining the downward orientation with approximately −36° yaw. Forward reach may be easier at X = −0.227 m than it was at X = −0.348 m. Since the car is already close to the basket, the roughly 0.13 m transfer might be direct, using slow actions of 3–5 steps. Grasping the side-resting car across its narrow thickness may be more secure, though that remains uncertain; the opening command and test lift look encouraging. I considered lifting to Z = 1.04 m, approximately 7 cm higher. Using the initial tabletop height estimate of 0.75 m and the grasp link6 height of 0.949 m, I estimate the car’s bottom would then be at 0.75 + (1.04 − 0.949) = 0.841 m, just above the estimated rim height of 0.84 m. I will instead target Z = 1.05 m for clearance and use six control steps. The right wrist has not reached its final orientation: its current wxyz quaternion is approximately [0.352, −0.583, 0.246, 0.689], compared with the target [0.0849, −0.702, 0.0849, 0.702], with an estimated remaining orientation change of about 0.6 rad. During the same six steps, I will continue that rotation with the right gripper open and keep the left gripper closed during the lift. Afterward, I can transfer the car into its basket and descend the right gripper toward the red bar.

The white car appears secure. The right wrist is closer to its final orientation, with an estimated 0.3 rad still to rotate. The red bar now appears nearly vertical in the wrist image, which puts its width horizontally across the view. Its center is near pixel (290, 190), slightly left of the gripper-center X coordinate of 320. Finishing the orientation may bring it closer to center; I should complete the alignment and descend toward it. I estimate the red bar’s top at Z = 0.768 m, its thickness at 0.015 m, and the tabletop at Z = 0.75 m. Could a right link6 grasp height of 0.91 m work? I estimate that would put the fingertips at Z = 0.752 m, just above the table, with the pads contacting the thin bar near Z = 0.76 m. A grasp height of 0.92 m would put the tips near Z = 0.762 m, which looks suitable, so I will use 0.92 m as the eventual grasp-height target. From the current link6 height of 1.039 m, that leaves 0.119 m of descent. I could finish the orientation at Z = 1.0 m before descending farther, or command (0.099, −0.098, 0.96) m with the final orientation for six steps, tentatively expecting the orientation to finish and the height to reach about 1.0 m. For the left arm, I considered a basket approach target of (−0.23, 0.03, 1.05) m, requiring a Y increase of 0.106 m. The precheck might fail with the downward, yawed orientation from the current height of 1.037 m, although this is a shorter move of about 0.1 m. Tilting for reach is another option, but the car is already near the basket and X = −0.227 m seems comfortable for the arm. A direct target of (−0.23, 0.02, 1.05) m would require an estimated move of 0.096 m, which I could try for five steps. At link6 Z = 1.05 m, I estimate the held car’s bottom near Z = 0.851 m, above the rim at 0.84 m. With the gripper pointing downward, the car center should share the link6’s X and Y coordinates, with its height approximately 0.157 m below link6. The basket interior spans roughly Y = 0–0.11 m and is centered near Y = 0.055 m, so Y = 0.02 m would be near the front but contained. The bus is near (−0.359, 0.055) m in X and Y; a white-car center at (−0.23, 0.02) m would be about 0.136 m away, which seems adequate. I could target Y = 0.055 m directly, leaving a Y change of 0.131 m, and that roughly 0.13 m move might pass the precheck. I also considered (−0.23, 0.05, 1.05) m for five steps. If the left target fails, neither arm will move, so a shorter intermediate waypoint is preferable. I will first target left link6 position (−0.23, −0.01, 1.05) m, with a Y increase of 0.066 m, then continue toward Y = 0.05 m. During the same five steps, I will keep the left gripper closed and command the open right gripper toward its final orientation at Z = 0.98 m, a descent of 0.059 m.

The left arm has only partially completed its transfer, reaching Y = −0.048 m, and the white car still appears secure. The right wrist is near its final orientation: its quaternion w component is about 0.153 rather than the target’s 0.085, with an estimated remaining orientation distance of 0.15 rad. The red bar appears vertical in the right wrist image, with its center initially estimated at image X = 290, about 30 pixels left of the gripper center at X = 320. At the final yaw of about 76°, the gripper’s local Y closing direction is approximately (−cos 76°, −sin 76°) = (−0.242, −0.970) in world X and Y, giving a closing line at 76°. The leftward image offset suggests an object local Y coordinate of approximately +0.008 m. I need to check the correction’s sign: if the object’s local Y coordinate is +0.008 m, the current gripper position is the object position minus 0.008 times the local Y direction. Centering therefore requires shifting the gripper by +0.008 times that direction, giving a world X–Y correction of approximately (−0.0019, −0.0078) m. That would move the right target from its current (0.098, −0.098) m to about (0.097, −0.106) m. Why does this differ from the stereo estimate of the red bar’s center at Y = −0.098 m? My image-center estimate may be inaccurate. In observation 265, I now estimate the bar center near pixel (298, 180); averaging its apparent horizontal edges gives (240 + 360) / 2 = 300, an offset of −20 pixels. This suggests a smaller local Y offset of +0.005 m. The corresponding position correction is approximately (−0.0012, −0.00485) m, giving an X–Y target of (0.097, −0.103) m. I will use the right link6 target (0.097, −0.103, 0.93) m with the final orientation and the gripper open. From its current height of 0.996 m, three steps may bring it to about 0.96 m, followed by a later descent to 0.93 m. For the left arm, I could continue toward Y = 0.05 m for five steps while also giving the right arm five steps. The right descent from 0.996 m toward 0.93 m might then reach approximately 0.94 m, near contact. I prefer three steps for better control of that approach; the left arm’s roughly 0.1 m target displacement might produce about 0.035 m of motion during the same action. I will target the left link6 at (−0.23, 0.05, 1.05) m with its gripper closed and retain its grasp orientation. I estimate the target distance at 0.098 m, which may pass the precheck; if it fails, the right arm will not move either. A shorter alternative is left Y = 0.02 m, a change of about 0.068 m, followed by the final correction. The earlier target at Y = −0.01 m passed from Y = −0.076 m, although five steps only moved the arm 0.028 m to Y = −0.048 m. I think the target at Y = 0.05 m is likely to pass, so I will use it and execute three control steps for both arms.

The left arm has again failed to move forward while holding the gripper downward. Its current Y coordinate is −0.048 m, and the target was Y = 0.05 m, a change of +0.098 m; the precheck position error was about 45 mm. A shorter target at Y = −0.02 m, a change of +0.028 m, perhaps with Z = 1.04 m, would likely pass. However, I would eventually still need to reach Y = 0.05 m, and the joint-limit difficulty may remain. Instead, I could tilt the held car at the current raised position. The current orientation is the downward pose with a −36° yaw. I would form a tilted carrying orientation as Rz(−36°) multiplied by the intermediate quaternion, approximately [0.653, −0.2706, 0.2706, 0.6533] in wxyz order. I am unsure whether to describe that intermediate tilt as a rotation about world X or a local axis. It was obtained by interpolating between the downward quaternion [0.5, −0.5, 0.5, 0.5] and the initial horizontal quaternion [0.707, 0, 0, 0.707]. I briefly considered whether its approximately 0.653 component relates to cos 22.5°, but the intended tilt is clear. Applying the −36° yaw to the intermediate orientation should preserve the car’s long-axis alignment relative to the gripper. A fully horizontal alternative would be Rz(−36°) multiplied by the initial quaternion, but the intermediate tilt should be enough. I estimate the orientation change from the current pose at 0.785 rad. The left link6 is at approximately (−0.229, −0.048, 1.039) m. I estimate the car’s current center at Y = −0.048 m and Z = 0.881 m. Tilting should swing it forward by about +0.111 m in Y and upward, putting its center near (−0.229, 0.063, 0.928) m, directly above the white basket without translating link6 forward. This resembles the earlier bus placement, but the car now appears securely grasped across its thickness. It could still slip during the tilt; if it does, it may fall inside as it moves over the basket. I will tilt gradually using three control steps and inspect afterward. At the intended intermediate pose, the car’s estimated center would be at X = −0.229 m and Y = 0.063 m, while the bus is near X = −0.359 m and Y = 0.055 m, giving about 0.13 m separation. I could then lower link6 to Z = 0.94 m, putting the car’s estimated center at Z = 0.839 m. With an estimated side-resting height of 0.04 m, its bottom would be near Z = 0.819 m, above the basket floor at Z = 0.75 m, leaving a release drop of about 0.07 m. I will therefore replace the forward translation with a tilt at the left arm’s current position. The right gripper still needs to descend toward the red bar. If the left tilt target passes the precheck, both arms can move together for three steps: the left toward the yawed tilt quaternion and the right toward its final orientation at Z = 0.93 m. First, I will compute the left tilt quaternion.

The computed left tilt quaternion is approximately [0.823, −0.174, 0.341, 0.419] in wxyz order. Its angular distance from the current downward, yawed orientation [0.630, −0.321, 0.630, 0.321] is about 0.785 rad. I will use this tilt target for the left arm and continue the right arm toward its final alignment quaternion [0.08494957, −0.70198545, 0.08494957, 0.70198545] at a link6 height of 0.93 m. I will use three control steps.

The left wrist has only tilted slightly: its quaternion w component is now 0.668, compared with about 0.63 in the downward pose. The white car still appears secure. The red bar now appears vertical in the right wrist image, centered near pixel (330, 190). The right fingers remain open, the wrist is nearly at its final orientation, and its measured link6 height is 0.965 m. I will use three control steps to continue the left wrist toward its tilt target while lowering the right link6 to the red bar’s grasp-height target of 0.93 m.

The red bar is at grasp height, with the right link6 at Z = 0.934 m and the estimated fingertips at Z = 0.7564 m, above the estimated tabletop height of 0.75 m. The bar is horizontally centered near image X = 330 pixels. Its image width is about 100 pixels compared with the 400-pixel gap between the fingers, so I will close the right gripper. The white car still appears secure, but is it fully over the basket yet? In the high-camera view, it is near pixel (210, 193), close to the basket’s front-right edge, while the basket center is near (190, 176). I will continue toward the left wrist’s final tilt quaternion, with approximately 0.5 rad of rotation remaining. This could eventually let the car drop into the basket. I will use three control steps to continue the left tilt with its gripper closed while closing the right gripper around the red bar.

The right gripper’s opening command is 0.33, indicating contact with the red bar. The left wrist is progressing toward its tilt target, and the white car now appears near pixel (220, 178) in the high-camera view, above the white basket’s right edge and perhaps partially over the opening. I considered continuing the left tilt for three control steps and test-lifting the red bar for two, but both arms must use the same step count. Two steps should be sufficient for the right test lift, so I will use two for both arms. I will target a right link6 height of 0.964 m while continuing the left wrist toward its final tilt orientation.

The red bar slipped during the test lift. The right opening command is now 0.045, the wrist view shows empty, closed fingers, and the bar remains unchanged near pixel (366, 239) on the table in the high-camera view. The closure looked like contact, but the bar may have been too thin or too low for a secure grasp. At link6 Z = 0.934 m, I estimated the fingertips at Z = 0.7564 m and the bar top at Z = 0.768 m. Perhaps the pads pinched the thin wrapper and it slipped during lifting, or the fingers closed underneath or around it without holding it. Contact near an end is another possible explanation. The opening command changed from 0.33 during closure to 0.045 during lifting, consistent with losing the object. The wrist-view alignment may have been off-center. In observation 274, I estimate the fingers at image X = 230 and 400, while the bar spans X = 280–450, with its center near 365. The right finger overlaps the bar near X = 400, while the left finger is outside it at X = 230. The finger midpoint is 315, giving a 50-pixel offset from the bar center. Could the bar have been about 3 cm to the right of the closing center? In observation 271, I had estimated its center at X = 330 with the open fingers near X = 120 and 520, which looked aligned. My previous correction may have been insufficient or had the wrong sign. I should reopen and recenter using the stereo estimate and camera projection. The triangulated bar center is approximately (0.0993, −0.0977) m in world X and Y, while the current right link6 is at (0.098, −0.104) m after lifting. Those positions are close, so the image offset may partly reflect perspective or the difference between the visible label center and the geometric center. The fingertip-center reference is pixel (320, 275). Looking back at observation 271, the bar may span image X = 280–440, giving a center near 360; I am also uncertain whether its top was near pixel coordinate 270. I could use segmentation or a gridded crop to locate the bar and fingers more precisely. Color thresholding within a crop could avoid confusing the bar with the red basket and other red objects. I should locate the midpoint at the grasp contact height rather than use the centroid of the whole projected bar. The fingertips are at local X = 0.1576 m. With link6 Z = 0.934 m and the bar top at Z = 0.768 m, the top has local X = 0.166 m and should project near image Y = 250, close to the fingertip reference at Y = 275. The whole bar spans approximately image Y = 35–405, with a center near 220, and its horizontal position varies with height because of perspective. At Y = 250, its center may be near X = 350, about 30 pixels right of the finger midpoint at (320, 275). At Y = 275 in observation 271, its sides may instead be near X = 280 and 400, giving a center near 340 and a 20-pixel offset. I should align that cross-section rather than the whole-image centroid. The stereo coordinates let me check the correction directly. Using the averaged endpoint center, the bar’s world X–Y position is approximately (0.09934, −0.09767) m. The current right link6 position is (0.098, −0.104, 0.959) m, with the downward orientation yawed about 76°. Its local Y direction is approximately (−0.238, −0.971) in world X and Y. The object-minus-gripper horizontal vector is (0.00134, 0.00633) m, whose projection onto local Y is about −0.00646 m, or approximately −0.0065 m. That is consistent with a rightward image offset of about 30 pixels. My earlier correction had the wrong sign. The previous position near (0.098, −0.098) m was already almost aligned, but shifting to (0.097, −0.103) m added a negative Y offset, making the object’s local Y coordinate more negative and moving it farther right in the image. I should return to a target near the stereo center, (0.099, −0.098) m, rather than use another image-based heuristic. I will reopen the empty right gripper and target link6 position (0.099, −0.098, 0.934) m with the final grasp orientation. This requests a 0.025 m descent from the current Z = 0.959 m. Three control steps may reach that height; I will inspect the alignment before closing again. The white car remains held by the left gripper. Its quaternion w component is now 0.748, compared with 0.823 in the intended tilt target, with about 0.35 rad of rotation remaining. I could continue the tilt for two or three steps. In observation 276, the car appears near pixel (220, 180), within the white basket’s apparent interior bounds of image X = 135–250 and Y = 145–205. I might lower and release it without completing the tilt, but I need to check its clearance from the right rim. The left link6 is at (−0.229, −0.046, 1.04) m with wxyz quaternion [0.748, −0.248, 0.485, 0.379]. I estimate this partial tilt at about 30° from downward, with the object center offset forward and upward. I previously assumed that tilting would leave its world X coordinate unchanged, but the −36° yaw adds a horizontal X component to local X. For the intended yawed intermediate orientation, local X is Rz(−36°) × (0, 0.707, −0.707), giving approximately (0.4155, 0.5722, −0.707). Using a 0.1576 m object-center offset gives an estimated center of (−0.229 + 0.0655, −0.046 + 0.0902, 1.04 − 0.1114) = (−0.1635, 0.0442, 0.9286) m. That estimated X coordinate near −0.16 m is consistent with the car appearing near image X = 220, close to the white basket’s right edge at world X ≈ −0.14 m. The yaw therefore swings the car toward the right rim, rather than only forward. Its length may extend beyond the edge. At the full tilt target, I estimate horizontal offsets of approximately +0.065 m in X and +0.09 m in Y, with the center near (−0.164, 0.044) m, though the current partial tilt may have a different offset magnitude. The car is likely still inside the opening, but I should avoid releasing it onto the rim. I could shift link6 left by about 0.05 m, perhaps also toward Y = 0, to bring the car center closer to X = −0.23 m before lowering. A lateral move may be easier for the precheck than another forward move. I will use left link6 target (−0.27, −0.046, 1.02) m while retaining the current orientation. I estimate that this would put the car center near (−0.204, 0.044, 0.909) m, safely farther inside the basket. The bus is near X = −0.359 m, giving an estimated 0.155 m separation. Afterward, I could lower link6 to Z = 0.94 m and release the car. The left opening command remains stable at 0.262, and the car stays fixed in the wrist view, so I still consider it held. For the immediate action, I will shift the left arm about 0.04 m left and 0.02 m down, keeping its measured wxyz quaternion [0.748, −0.248, 0.485, 0.379] and its gripper closed. This avoids continuing the tilt toward the rim. At the same time, I will reopen and recenter the right gripper over the red bar while descending to Z = 0.934 m. I will use three control steps for both arms and inspect the result.

The right opening command is 0.87 rather than the fully open endpoint of 1 after three steps, but the fingers are spread widely. The red bar now appears centered near image X = 330 pixels. At the contact row, Y = 275 pixels, its center may be near X = 330, compared with the finger midpoint at X = 320, an offset within 10 pixels. I could spend another two steps opening fully, but 0.87 appears adequate for closure. The white car is above the right interior of the white basket, with the basket visible beneath it in the wrist view and the yellow bus to its left. The current left link6 position is (−0.268, −0.046, 1.021) m with a partially tilted orientation. I estimate the car’s center at (−0.203, 0.044, 0.910) m and its bottom near Z = 0.89 m, above the rim at Z = 0.84 m. I will target left link6 Z = 0.94 m for release, a downward residual of 0.081 m, while closing the right gripper. I estimate that three steps will lower the left arm about 0.03 m, bringing link6 near Z = 0.99 m, the car’s center near 0.879 m, and its bottom near 0.859 m, just above the rim. Another three steps might reach the target, although a further 0.03 m descent from 0.99 m would instead reach 0.96 m, with the center near 0.849 m and bottom near 0.829 m inside the basket. Two or three short actions may be needed. For now, I will use three steps to lower the held white car and close on the red bar.

The right opening command is now 0.061 after closure, much lower than the previous 0.33. Are the fingers nearly closed around the bar, or is the bar underneath them? The wrist view still shows the red bar between the fingers, but the pads appear to meet over its center. A small opening might be plausible for a thin bar, although I do not know how the normalized command maps to the physical gap. I had associated a pepper opening of about 0.45 with a width of 0.05 m and a car opening of about 0.26 with a width of 0.04 m; that relationship may be nonlinear. For a bar width of approximately 0.025 m, might I expect an opening closer to 0.2? Could 0.06 correspond to a gap of about 0.006 m, or to the bar’s thin dimension? Was the previous 0.33 closure off-center on a thicker part? I am not sure. In observation 282, the fingertips appear to meet near pixel (300, 260), while the bar spans approximately image X = 280–380 pixels. If the fingers were gripping its sides, I would expect them to stop near X = 280 and 380, leaving a gap of about 100 pixels. Instead, the apparent gap at contact may be only 20 pixels. This suggests that the fingers closed above the bar rather than alongside it. They might be pinching the wrapper, or the angled pads may have slipped onto its top and pressed it downward. At right link6 Z = 0.934 m, I estimate the tips at Z = 0.756 m and the bar top at Z = 0.768 m. The tips are only 6 mm above the estimated tabletop at Z = 0.75 m, which initially seemed low enough. However, the pads may sit about 2 cm above the tips, placing their contact region around Z = 0.77–0.81 m, above the bar. A lower grasp may bring the pads alongside its thin sides. I considered fingertips near Z = 0.752 m with link6 at Z = 0.910 m, and lowering link6 to 0.91 m to put the pad region around Z = 0.75–0.79 m, with tips at approximately Z = 0.7524 m. My tentative regrasp height is 0.912 m. The bar remains unchanged on the table in the high view, so I do not consider this a secure grasp and should not test-lift yet. Lowering closed fingers onto it could push the bar or cause contact with the table. I will first reopen at the current link6 height of 0.934 m, then descend with the fingers open toward 0.912 m before closing again. The white car remains held. Its current left link6 height is 0.988 m; I estimate the car center at Z = 0.877 m and its bottom at Z = 0.85 m, still about 0.1 m above the basket floor at Z = 0.75 m. I considered two steps to reopen the right gripper while continuing the left descent. For the immediate action, I will use three steps for both arms: lower the left toward link6 Z = 0.94 m, tentatively expecting it to reach about 0.955 m, while reopening the right gripper at its current height of 0.934 m. Then I will inspect the observation.

Has the white car tilted within the grasp? It has rotated substantially in the wrist view, and the left opening command has increased from 0.28 to 0.303. It may be slipping as it contacts the basket floor or wall. In the high-camera view, it still appears held near the basket’s right edge at pixel (218, 185). It may now be resting on the basket bottom. With the left link6 at Z = 0.963 m, I estimate the car’s center near Z = 0.85 m and its bottom near Z = 0.83 m, about 0.08 m above the floor, so its support is uncertain. The wrist view shows it near the floor beside the yellow bus, with the car rotated relative to the finger pads; floor contact seems likely. I will release it, then withdraw and verify that it remains fully inside the basket. If it does not, I will adjust it. The right opening command is 0.883. I will keep that gripper open and lower its link6 toward Z = 0.912 m alongside the thin red bar for three control steps; the actual height may reach only about 0.915 m. During the same three steps, I will release the white car with the left gripper.

Is the white car fully inside the basket? Only a small white roof area is visible near pixel (209, 177) beside the bus in the high-camera view. The wrist view suggests that the car is lying supported against the basket floor or wall and appears contained. I should withdraw the left arm upward to get a clearer view and verify this. Its measured pose rose by 0.004 m after release, and its quaternion changed. I considered retracting it to link6 Z = 1.08 m, a vertical increase of 0.113 m, over six control steps to clear the basket. The right link6 is at Z = 0.923 m, still above the target of 0.912 m. The previous three steps lowered it only 0.011 m. Perhaps table contact or proximity to a joint constraint is slowing the motion. The red bar is centered near image X = 320 pixels, and the fingers are open. At link6 Z = 0.923 m, I estimate the fingertips at Z = 0.7654 m, still near the bar top at Z = 0.768 m. At the target height of 0.912 m, I estimate the fingertips at Z = 0.7544 m. Two more lowering steps might reach that target. Using six steps for both arms would allow more left-arm withdrawal, but the right fingers are near contact and need a shorter action. Two steps would leave the left withdrawal only partially complete, which I could continue afterward. I will use three steps for both arms: withdraw the open left gripper toward Z = 1.08 m and lower the open right gripper toward Z = 0.912 m, then inspect the observation.

The right link6 did not descend; its height remains at 0.923 m, while its X position shifted by 0.001 m to 0.101 m. Perhaps the downward orientation with about 76° of yaw is near a joint limit, or perhaps table contact is stopping the motion despite the successful precheck. The open fingertips may already be touching the table. At link6 Z = 0.923 m, I estimate the tips at Z = 0.7654 m, leaving about 0.015 m above my earlier tabletop estimate of 0.75 m, so I had expected the arm could reach 0.912 m. Could the red bar be supporting the fingers, or could their geometry extend beyond the stated farthest forward extent of 0.1576 m? Perhaps the tabletop is at Z = 0.765 m rather than 0.75 m. The earlier bar-top estimate was 0.768 m, and a tabletop near 0.76 m would put the tips near the table at their current height of about 0.765 m. With a table height of 0.76 m, the target link6 height of 0.912 m would put the tips near 0.754 m, below the table, which could explain the stalled descent. I now think the tabletop is likely near 0.76 m rather than 0.75 m; that would also revise my estimate of the bus’s bottom height. Under this interpretation, link6 Z = 0.923 m may be the lower limit imposed by fingertip contact near Z = 0.765 m. If the bar top is at 0.768 m and the table is at 0.76 m, its thickness would be only 0.008 m, roughly 0.01 m. That makes it difficult to get the pads alongside the bar before the tips reach the table. Should I lift one edge first, or use a horizontal side approach to pinch its top and bottom? A top-down pinch across its width may still work if the lower edges of the pads reach approximately 0.765 m and are accurately aligned with the thin sides. My previous closure at link6 Z = 0.934 m put the estimated tips at 0.776 m, about 0.016 m above the table and above the bar top at 0.768 m, which would explain the lack of contact. At the current link6 height of 0.923 m, the tips are near 0.765 m and may now be low enough to close on the sides. I will stop trying to descend farther and close the right gripper at its current height of 0.923 m for three control steps, then test the grasp with a lift. I expect this lower alignment to work, though the grasp still needs verification. The white car remains stable inside the white basket. During the same three steps, I will continue retracting the open left gripper toward link6 Z = 1.08 m.

The right gripper’s opening command is 0.215. The fingers may be contacting the red bar’s sides near its bottom. In the wrist view, the bar spans approximately image X = 260–380 pixels at Y = 350 pixels, and the fingers appear to contact it near X = 240 and 400 pixels. This looks promising, but the grasp still needs verification. I will use two control steps for a small test lift toward a right link6 height of approximately 0.95 m, while continuing the left arm’s retraction for the same two steps. Then I will check whether the bar moves with the right gripper.

In the high-camera view, the red bar appears to have changed from a horizontal diagonal near pixel (366, 239) to a small, perhaps vertical shape near (365, 236) beneath the gripper. It remains fixed relative to the wrist view, and the right opening command is 0.186, so it is likely held. I should lift farther to verify this. The current right link6 height is 0.948 m; using the estimated tabletop height of 0.76 m and the observed 0.025 m lift, I estimate the bar’s bottom at 0.785 m. Its position in the high view may still be close to its previous location. I considered another approximately 0.05 m lift toward a link6 height of 1.0 m, or six control steps toward 1.05 m. If the grasp is insecure, however, the bar could slip. I will instead use three steps toward 0.99 m and inspect afterward. The empty left arm is at (−0.269, −0.048, 1.051) m with its gripper open and its tilted, yawed orientation. The remaining yellow car is estimated near X = 0.02 m, Y = −0.23 m. The X separation is about 0.29 m, and a direct approach might be about 0.32 m, exceeding the 0.25 m target-distance limit, so I need an intermediate waypoint. I considered staging the left arm at (−0.15, −0.15, 1.08) m with the downward wxyz quaternion [0.5, −0.5, 0.5, 0.5]. The orientation change from its current quaternion [0.754, −0.233, 0.475, 0.389], a tilted pose with approximately −36° yaw, might be about 1.1 rad; I would need to calculate that before choosing it. Instead, I will retain the current orientation and move toward the same staging position, an estimated distance of 0.17 m, then adjust orientation later. The empty, open gripper’s path appears clear above the baskets and tabletop. Three steps may move it only about 0.04 m, which is acceptable. I will use three control steps to lift the likely held red bar toward right link6 Z = 0.99 m while staging the open left arm toward (−0.15, −0.15, 1.08) m with its current orientation.

The red bar appears secure after a 0.06 m lift, and the right opening command is stable at 0.185. In the high-camera view, it appears vertical near pixel (370, 235), but it has lifted off the table. I need to transport it to the right basket, whose estimated center is X = 0.30 m, Y = 0.057 m. The right link6 is currently at (0.102, −0.099, 0.983) m, with the gripper pointing downward and yawed about 76°. Using a tabletop height of 0.76 m and the grasp link6 height of 0.923 m, I estimate the bar’s bottom at 0.76 + (0.983 − 0.923) = 0.82 m, below the rim at 0.84 m. Raising link6 to 1.03 m would put the estimated bottom at 0.867 m. I will probably lift to 1.05 m for clearance. The bar is about 0.09 m long and held across its width; although it appears vertical in the wrist image, it is horizontal in the environment. Reaching the basket would require approximately +0.198 m along X and +0.156 m along Y. Forward reach at Z = 1.05 m may be limited with this downward, yawed orientation. I considered using the intermediate tilt with the same 76° yaw, but its horizontal local-X direction would be Rz(76°) × (0, 0.707) = (−0.686, 0.495). That would swing the held bar left toward the blue basket rather than toward the right basket. For the bar’s long-axis angle of about −14°, this tilted local-X direction is at 76° + 90° = 166°, along the same long-axis line as −14° but pointing left. I should retain the downward orientation, lift, and use short translations rightward and forward instead. An opposite tilt, leaning backward, might swing the object right, but I will not pursue that now. Increasing the right arm’s X coordinate toward the outer side of its base may be easier than extending forward. I could first align X with the red basket and tilt afterward. If link6 were at X = 0.30 m, Y = −0.099 m, Z = 1.05 m, the usual tilt would swing the object approximately −0.108 m along X to a center near X = 0.192 m. The red basket is estimated to span X = 0.16–0.42 m, with its center near 0.29 m, so that might still be inside near the left edge. How would the bar’s length extend along the local frame there? A placement near X = 0.22 m might work. Alternatively, setting link6 X = 0.40 m before tilting could put the object center near X = 0.292 m. I think X = 0.40 m is likely reachable, but that is unverified. Another possibility is a tilt based on yaw −103.8°, which gives the opposite directed closing axis to yaw 76.2° while preserving the same undirected closing line. Both downward poses have local X pointing down, but their local Y and local Z directions are opposite. Are they related by a 180° rotation about local X, which is downward in the environment? With symmetric fingers, these poses are equivalent for the grasp apart from swapping the fingers. However, applying the usual tilt at yaw −103.8° gives a horizontal local-X direction at −13.8°, with positive X and negative Y. That would swing the bar right but toward the robot, rather than forward toward the basket. I could choose a different carrying tilt that points local X forward and right. In general, I can rotate about the local-Y closing axis in either direction. The intermediate orientation used previously tilts local X toward the horizontal direction tied to the initial pose, which is world +Y before applying yaw. A custom orientation with local X = (0.5, 0.5, −0.707), while keeping the local-Y closing axis fixed, is another possibility. The whole orientation change might exceed 1 rad and rotate the grasped bar differently. Short translations with the gripper downward are simpler. The right arm previously encountered a forward-reach limit near Z = 1.04 m, Y = −0.085 m, X = 0.123 m while carrying the green pepper. The red basket requires Y = 0.057 m. Could lowering link6 to 1.02 m help? Using the red bar’s grasp height of 0.923 m, I estimate its bottom at 0.857 m at that height, still above the rim. Forward reach might remain limited, but I could try moving to Y = −0.02 m and then tilting. A horizontal carrying posture resembling the initial pose, with a yaw chosen to swing the object into the basket, is another alternative. I will start with waypoints and adjust if the precheck fails. The empty left arm is currently at (−0.231, −0.08, 1.061) m with its gripper open in a tilted, yawed pose. I can move it toward a staging position at (−0.10, −0.18, 1.08) m while preserving its current orientation, an estimated displacement of 0.164 m. At the same time, the right arm can lift vertically to 1.05 m at its current X and Y, a displacement of 0.067 m. I will use eight steps; the left arm may only partially reach its waypoint. Afterward, I can align it above the remaining yellow car. The yellow car’s high-camera center is near pixel (333, 291), with an estimated environment X–Y center of (0.022, −0.23) m. Its long axis runs diagonally from the front-left point near (320, 303) to the rear-right point near (347, 280), similar to the original white car’s long-axis angle of about 28°. A −61.5° yaw would allow a width grasp, but the upright white car slipped during translation after such a grasp. The bus slipped during tilting. Perhaps gripping the yellow car’s ends along its length would retain it better. A deeper width grasp at link6 Z = 0.915 m is another option, but with the table at 0.76 m and the car center near 0.78 m, the estimated fingertip height would be 0.915 − 0.157 = 0.757 m, below the table. The minimum link6 height would be about 0.918 m. Using 0.925 m as before gives estimated tips at 0.767 m, safely above the table. That height supported a lift of the white car, although it slipped during faster transport. Slower transport, avoiding tilt until the car is over the basket, and a 0.06 m test lift after closure might improve confidence. The yellow car’s body shape may also be easier to grasp. Gripping the ends could be more stable because the pads would contact vertical bumpers rather than the smooth, curved roof and sides. The bus’s length grasp survived its test lift and transport before slipping into the correct basket during the tilt. The white car’s width grasp slipped before reaching its basket. I could use the downward pose without yaw for an end grasp, but the yellow car is diagonal, so aligning local Y with its long axis would be better. The closing line is 180° + θ modulo 180°, so a yaw of about +28° would align that line with the car’s 28° long axis. Its end-to-end grasp length may be 0.09 m, against a possible maximum opening of 0.11 m, which seems feasible. From the high view, its length may instead be about 0.08 m with an opening of about 0.1 m. I tentatively favor the +28° yaw and an end grasp. With that yaw, the usual tilt gives a horizontal local-X direction at 118°, with negative X and positive Y. That would swing the car left and forward toward the white basket, from a center near X = 0.02 m to about −0.09 m. It would not reach the basket’s X coordinate near −0.28 m, but it would help. I can transport it downward-facing using slow steps. For the immediate action, I will raise the securely held red bar to right link6 Z = 1.05 m, retaining its grasp orientation and closed gripper. I will move the open left arm toward (−0.10, −0.18, 1.08) m with its current orientation. Both arms will use eight control steps.

The left arm is near its staging pose, and the yellow car is visible at the right edge of the left wrist view. I will align above the car’s estimated X–Y center of (0.022, −0.23) m with a top-down orientation yawed +28° for an end-to-end grasp. The current left wxyz quaternion is [0.754, −0.233, 0.475, 0.389]. The orientation change to the proposed target may be about 1.8 rad, so I will calculate the target quaternion, its angular distance from the current pose, and an intermediate orientation. The right link6 is currently at (0.102, −0.099, 1.049) m. Using the estimated tabletop height and grasp height, I estimate the held red bar’s bottom at 0.76 + (1.049 − 0.923) = 0.886 m, which provides clearance. I plan to move the right arm toward (0.22, −0.08, 1.05) m on the way to the red basket. This gives changes of +0.118 m in X and +0.019 m in Y, with an estimated total distance of 0.12 m. Since it requires little forward motion, I expect it to pass the precheck. I can move toward Y = 0 m afterward. First, I will calculate the left gripper’s target and intermediate orientations.

The left gripper’s target orientation has a +28° yaw and wxyz quaternion [0.3642, −0.6061, 0.3642, 0.6061]. Its angular distance from the current orientation is about 1.20 rad, so I will first use the halfway quaternion [0.5856, −0.4391, 0.4394, 0.5207]. I will target a link6 position above the yellow car’s estimated center at (0.022, −0.23, 1.08) m, about 0.17 m from the current pose. The combined rotation and translation may pass the precheck. The empty arm will move rightward; the more negative Y target moves it toward the robot, which I expect to be easier. I will use eight control steps for both arms, keeping the left gripper open while moving the right arm, with the red bar held, toward (0.22, −0.08, 1.05) m.

The red bar remains held above the left edge of the red basket, near high-camera pixel (426, 187). The right link6 is at approximately (0.219, −0.08, 1.05) m with the gripper pointing downward. I estimate the bar’s center shares its X and Y coordinates and is at Z = 0.892 m. The intended placement is near X = 0.30 m, Y = 0.06 m, requiring roughly +0.08 m along X and +0.14 m along Y. A direct transfer in the downward pose might fail the precheck. I considered tilting with the orientation Rz(76°) multiplied by the intermediate carrying orientation. Its horizontal local-X direction is at 166°, so it would swing the bar left, from X = 0.219 m to approximately 0.111 m, over the gap between the blue and red baskets. Moving link6 right to X = 0.35 m first could let that tilt swing the bar back left to approximately X = 0.242 m inside the red basket. Would the tilt also move it forward by about 0.079 m? Using the intermediate pose’s horizontal offset magnitude of 0.111 m at 166°, I instead estimate offsets of −0.108 m along X and +0.027 m along Y. That is not enough forward motion. Even from link6 Y = −0.053 m, it would put the bar near Y = −0.026 m, close to the front rim. The current link6 and estimated bar-center Y coordinates are −0.08 m; the front rim may be near Y = −0.005 m, and the desired center is Y = 0.055 m. That leaves approximately +0.135 m of forward translation. Rotating farther to the initial horizontal orientation with the same 76° yaw would use the full 0.1576 m finger extent, giving estimated offsets of −0.153 m along X and +0.038 m along Y. From the current position, the bar would still be at Y = −0.042 m, outside the opening. Some forward translation is therefore necessary with either of those tilts. The current downward pose at Y = −0.08 m and Z = 1.05 m may be near a joint limit for forward reach. I could lower link6 to Z = 1.02 m, where I estimate the bar’s bottom at Z = 0.857 m, still above the rim, and then advance in small steps. At Y = −0.02 m, a tilt or horizontal posture might provide the remaining forward offset. Another possibility is to carry with local X pointing horizontally along world +Y, giving approximately 0.157 m of forward offset. Could I do that while preserving the closing axis? The current local-Y closing direction is approximately (−0.242, −0.970, 0). It is not perpendicular to local X = world +Y: their dot product is −0.970. I cannot retain that closing axis while pointing the fingers directly forward. Rotating about local Y constrains local X to its perpendicular plane, so its horizontal direction would follow the bar’s long-axis line at 166° or −14°. Swinging directly along +Y would require changing the gripper’s yaw and rotating the entire held bar. I could use the initial horizontal orientation, which has local X along world +Y and local Y along world −X. Its angular distance from the current downward pose with 76° yaw may be about 2.0 rad, so I would need an intermediate orientation. That might be an easy way to swing the bar toward the basket, but rotating this thin object could cause it to slip. I prefer to try translations with the gripper downward first. Perhaps lowering link6 to Z = 1.0 m would relieve the forward-reach constraint associated with the high pose and joint 3. However, I estimate the bar’s bottom would then be at Z = 0.837 m, 3 mm below the rim at Z = 0.84 m, risking contact while crossing the front edge. I should retain the 1.05 m clearance height until the bar is above the opening, then lower it. Moving the basket does not seem necessary. If downward transfers fail, I could approach from the front using the initial horizontal orientation without yaw. With link6 near Y = −0.10 m, the estimated bar center would be near Y = 0.057 m. In that posture, its center height would equal the link6 height, with its bottom less than 0.01 m below it. A link6 height of 0.90 m would keep the bar above the rim before releasing it to the floor. The bar appears securely held, so this rotation might work, but I will keep it as a fallback. For the immediate action, I will move the right link6 to (0.30, −0.04, 1.04) m, retaining its downward grasp orientation and closed gripper. The target change is (+0.081, +0.04, −0.01) m, with an estimated distance of 0.091 m. This modest forward move is likely to pass the precheck. Later waypoints could be (0.30, 0.02, 1.04) m, approximately 0.06 m farther forward, followed by Y = 0.05 m. If the precheck fails near Y = 0 m, I can reconsider a tilt. The left arm is still approaching the yellow car. Its measured link6 position is (−0.091, −0.178, 1.075) m, with wxyz quaternion approximately [0.695, −0.318, 0.466, 0.446]. I will continue toward (0.022, −0.23, 1.08) m using the halfway alignment quaternion [0.58560879, −0.43914756, 0.4393769, 0.52072998]. I estimate the remaining position distance at 0.125 m and orientation change at about 0.5 rad. I will use eight control steps for both arms, keeping the left gripper open and the right gripper closed.

The red bar appears near pixel (460, 184) in the high-camera view, overlapping the left half of the red basket. The right link6 is at X = 0.30 m, Y = −0.04 m, and I estimate the bar’s center has the same X and Y coordinates. The basket’s front rim may be near Y = −0.005 m, so the bar is still just in front of it despite the overlap in the image. I could move the right arm to (0.30, 0.04, 1.04) m, a forward change of 0.08 m. Would that pass the precheck with the gripper pointing downward at X = 0.30 m? I could try six control steps while finishing the left gripper’s +28° yaw alignment above the yellow car at (0.022, −0.23, 1.04) m. I estimate the left position change at about 0.08 m and its remaining orientation change at perhaps 0.6 rad, so I expect that target to pass. If the right target fails, the left arm will not move either. A shorter right waypoint at Y = 0 m would require only 0.04 m of forward motion and may be safer. I will instead use (0.30, 0.01, 1.04) m, a forward change of 0.05 m, then continue toward Y = 0.06 m afterward. I will keep the red bar clamped, leave the left gripper open, and use six control steps to move the right arm to this waypoint while finishing the left alignment at Z = 1.04 m.

The right link6 is at Y = −0.011 m. The red bar appears near pixel (462, 178) in the high-camera view, possibly over the front-left interior of the red basket. I estimate its current bottom height as 0.76 + (1.036 − 0.923) = 0.873 m, above the rim at 0.84 m. A move to Y = 0.05 m would require a forward change of 0.061 m and would likely pass the precheck. The left arm has not yet reached the yellow car. Its current link6 position is (−0.021, −0.212, 1.059) m, and the target is (0.022, −0.23, 1.04) m. The current quaternion’s w component is approximately 0.565, compared with 0.364 for the target; I estimate the remaining whole-orientation change at about 0.5 rad. I will continue the left approach for six control steps while moving the right arm to Y = 0.06 m for final centering, keeping the red bar held and the left gripper open.

The rejected target is consistent with a forward-reach limit at the current right link6 Y coordinate of −0.011 m. Is the red bar already far enough inside the basket to release? I tentatively estimate the front of the interior near Y = 0.007 m; earlier rim estimates put the front at Y = 0.014 m, the back at Y = 0.10 m, and the center at Y = 0.057 m. I estimate the bar’s center shares the link6’s X and Y coordinates. With its world long axis at −14° and an estimated Y extent of ±0.01 m, it spans Y = −0.021 to −0.001 m, outside the front rim. Its apparent containment in the high-camera view may be due to its height. Releasing now would drop it in front of the basket, so I need to advance it by tilting or lowering the arm. I could lower the right link6 to Z = 1.0 m at the current Y = −0.011 m. My estimated bar-bottom height would then be 0.76 + (1.0 − 0.923) = 0.837 m, near the rim height of 0.84 m, with some risk of scraping it. Forward motion toward Y = 0.04 m might become reachable at that lower height. I considered a target of (0.30, 0.025, 1.0) m, estimating a forward change of 0.046 m, a descent of 0.036 m, and a total displacement of 0.058 m. It might pass the precheck, but the rim clearance would be marginal. A better option is to lower only to Z = 1.02 m, giving an estimated bar-bottom height of 0.857 m and 0.017 m of clearance above the rim. I also considered Y = 0.02 m, a forward change of 0.031 m with a Z change of −0.016 m. The lower height should decrease joint 3 and may allow the precheck to converge; I could then advance toward Y = 0.06 m at Z = 1.02 m. I will target the right link6 at (0.30, 0.025, 1.02) m for six control steps, retaining the closed gripper and its orientation, while continuing the left gripper toward the same final alignment above the yellow car. The estimated 17 mm rim clearance seems sufficient for this motion. If the precheck fails again, I will try a tilt.

The right link6 is now at Y = 0.016 m and Z = 1.017 m. I estimate the red bar’s bottom at Z = 0.854 m, above the basket’s front rim and interior. Moving to Y = 0.055 m would require a forward change of 0.039 m and may pass the precheck at this lower height. The downward gripper pose with about 76° of yaw could still encounter a reach limit, but the shorter move may help. I will try the nearby target (0.30, 0.05, 1.017) m for five control steps. After positioning the bar, I plan to lower the right link6 to Z = 0.93 m for release. The left link6 is at (0.009, −0.225, 1.044) m with wxyz quaternion [0.498, −0.514, 0.412, 0.564]. It is close to the yellow car’s approach target at (0.022, −0.23, 1.04) m. The intended +28° yaw orientation has an approximate wxyz quaternion of [0.364, −0.606, 0.364, 0.606], with about 0.3 rad of rotation remaining. I considered a pre-grasp height of 1.02 m, but for this action I will finish the alignment at the existing 1.04 m target. I will use five control steps for both arms, keeping the left gripper open and the red bar held in the right gripper.

The forward target failed again, so I should prepare to tilt the right gripper instead. Its current link6 position is (0.30, 0.016, 1.017) m, with the gripper pointing downward at about 76° of yaw. I estimate the held red bar’s center at (0.30, 0.016, 0.859) m, already above the basket’s front interior. Tilting to the intermediate carrying orientation with the same yaw would swing the bar approximately −0.108 m along X and +0.027 m along Y. I briefly question whether the upward change would be +0.111 m. My center-height estimates are 1.017 − 0.1576 = 0.859 m before the tilt and 1.017 − 0.111 = 0.906 m afterward. The resulting estimated center would be (0.192, 0.043, 0.906) m, over the basket’s left interior and clear of the rim. However, the bar is roughly 0.09 m long and oriented mostly along X. With the basket’s left edge near X = 0.15 m and an estimated half-length of 0.04 m, its left end would reach X = 0.152 m. That might fit, but the clearance would be tight. I will first shift the right link6 +0.04 m along X to 0.34 m. The bar would remain inside the basket’s horizontal bounds during that shift. After the tilt, I estimate its center at X = 0.232 m and its left end near X = 0.192 m, giving better clearance. I can then lower and release it without forcing further forward reach. I may need to compute the yawed tilt quaternion; I estimate the orientation change to that pose at 0.785 rad and expect it to pass the precheck. The bar could slip during rotation, but I expect it to fall inside the basket if that happens. For the immediate action, I will move the right link6 to (0.34, 0.016, 1.017) m, retaining its current grasp orientation and closed gripper. At the same time, the open left gripper can continue toward its final alignment above the yellow car. I will use five control steps, then prepare the tilt.

The left gripper is close to its final orientation: its quaternion’s w component is 0.419, compared with the target’s approximately 0.364, and I estimate the remaining orientation difference at 0.15 rad. Its position is at the intended approach point. The yellow car appears vertical in the wrist image, centered near pixel (330, 140), with the fingers at the bottom of the view. I should finish the orientation and descend toward an eventual link6 grasp height of 0.925 m, using an estimated tabletop height of 0.76 m and a possible car-top height of 0.80 m. The current link6 height is 1.04 m, leaving 0.115 m of descent to that grasp target. I will first use three control steps toward a height of 0.99 m while finishing the orientation. For the right arm, I need to compute the carrying-tilt quaternion with about 76° of yaw. I could execute that tilt simultaneously with the left arm’s three-step descent. I will calculate the right tilt quaternion first.

The right gripper’s computed tilt quaternion is approximately [0.1109, −0.3799, 0.04597, 0.9172] in wxyz order. Its current downward-facing, yawed quaternion is approximately [0.085, −0.702, 0.085, 0.702], so the planned orientation change is about 0.785 rad. I will tilt it over three control steps while holding its link6 position at (0.34, 0.015, 1.017) m and keeping the red bar clamped. During the same three steps, I will lower the open left gripper toward a link6 height of 0.925 m and finish its end-grasp orientation for the yellow car.

The red bar remains held over the red basket during the slight tilt. The yellow car’s center is near pixel (340, 130) in the left wrist view, and it has not yet been grasped. I will continue the left gripper’s descent and the right gripper’s inward tilt for three control steps each.

The yellow car appears large in the left wrist view, centered near pixel (340, 150). The contact reference is at image Y = 275 pixels. The left link6 is currently at Z = 0.973 m and still needs to descend 0.048 m toward the target height of 0.925 m. I expect another three control steps to produce about 0.035 m of descent, followed by one or two final steps if needed. The right wrist is still progressing toward its intended tilt; the magnitude of its quaternion X component is about 0.603 versus the target of about 0.38. Its current link6 position is (0.34, 0.017, 1.018) m, with wxyz quaternion [0.095, −0.603, 0.073, 0.788], representing a partial tilt of about 25°. I estimate the held red bar’s center near (0.29, 0.03, 0.90) m, inside the red basket. I could lower and release it without completing the tilt. Its bottom may be at Z = 0.88 m, about 0.12 m above the floor at Z = 0.76 m; that release drop seems acceptable for the bar. The high-camera view places it near pixel (462, 177), over the basket interior, supporting my estimate that its center is around X = 0.28 m and Y = 0.03 m and that it is fully above the opening. I will release the red bar now rather than continue tilting and risk slipping. I will hold the right arm at its current pose and open its gripper for three control steps while keeping the left gripper open and continuing its descent toward Z = 0.925 m. If the bar drops inside, that placement will be satisfactory.

The red bar is stable inside the red basket. The left link6 is at Z = 0.938 m, with estimated fingertips at Z = 0.7804 m. I estimate the tabletop at Z = 0.76 m and the yellow car’s top at Z = 0.80 m. The pads are currently near its upper body, so I could lower link6 to about 0.922 m before closing. I intended an end-to-end grasp, but the car’s long axis appears vertical in the wrist image while the fingers close horizontally. That indicates a grasp across its width rather than along its length. I may have misinterpreted how yaw affects the wrist-camera view. The fingers close along local Y, and I previously determined that the camera’s image X direction corresponds to local −Y, so the closing direction should always appear horizontal in the wrist image. With the base downward orientation and no yaw, I had estimated the car’s world long-axis angle at 28°. Local Y points along world −X, a line at 180°, so the closing axis would be only 28° from the car’s length. The car should therefore appear nearly horizontal in that wrist view. Applying +28° yaw gives local Y = Rz(28°) × (−X), directed at 208°, or along the same undirected line as 28°. That should align the closing axis with the car’s length and make the car horizontal in the wrist image, yet it appears vertical in obs_000349. Perhaps the yellow car’s actual world long-axis angle is −62° rather than 28°. In the high-camera view, I estimated its axis from the front, lower-left pixel (320, 304) to the rear, upper-right pixel (347, 281). At constant tabletop height, that points toward positive world X and positive world Y. The pixel vector is (+27, −23), but the world scale differs between the two image directions because of the camera angle. At Z = 0.78 m, I estimate the world-X derivative at approximately 0.0035 m per pixel and the world-Y derivative with respect to image Y at approximately −0.005 m per pixel. That suggests a world X–Y vector near (0.095, 0.115) m and an angle near 50°, rather than 28°. The earlier white-car stereo vector was (0.079, 0.043) m, giving about 28°; the yellow car may instead be angled around 50°. Even then, the difference from the chosen 28° yaw would be about 22°, so I would expect a diagonal axis closer to horizontal rather than vertical. Could the yaw sign in the camera interpretation be reversed? I formed the orientation as Rz(yaw) × q_down, and the corresponding local-Y expression Rz(yaw) × (−X) seems correct. In obs_000047, the bus’s world-X long axis aligned with local Y = world −X and appeared horizontal in the wrist view, supporting that interpretation. A vertical car at the current 28° yaw would imply a world long-axis line near 118°, equivalently −62°, steeply along world Y with negative X. That still does not match my high-camera estimate of roughly 50° from the positive-X, positive-Y pixel direction. I also considered whether I mixed quaternion orders. The target was computed using R.from_euler('z', 28) × R.from_quat([−0.5, 0.5, 0.5, 0.5]), with the downward quaternion supplied in xyzw order. The printed wxyz target was approximately [0.364, −0.606, 0.364, 0.606], and the measured orientation in obs_000349 matches it. I could calculate the rotation matrix’s local-Y direction and use stereo projection of the yellow car’s center and axis to investigate before closure. The discrepancy remains unresolved. Nevertheless, the visible alignment can support a width grasp without requiring me to resolve the intended end-grasp geometry first. The car appears vertical in the wrist view, so the horizontal closing direction should cross its short dimension. I can retain the current orientation if the car is centered and lower the fingers for more contact. The white car slipped during a width grasp, but I can transport this car more carefully, and its shape may retain the grasp differently. With an estimated maximum finger gap of 0.1 m and a car length of 0.09 m, an end grasp might require roughly another 90° of yaw from the current pose. That is an alternative, but the width grasp is easier and fits within the opening. I will use a deeper width grasp. I considered lowering to 0.922 m and closing, but will target left link6 Z = 0.920 m, giving estimated fingertips at Z = 0.7624 m, close to the tabletop at 0.76 m and allowing more pad contact. From the current 0.938 m height, this is a planned descent of 0.018 m. I will use two control steps with the left gripper still open before deciding to close. The right arm should withdraw from the red basket before approaching the remaining beige bar. During the same two steps, I will command it upward toward link6 Z = 1.08 m, retaining its current orientation and keeping its gripper open. The withdrawal may only partially reach that height. After grasping the yellow car, I can continue toward the beige bar.

The right arm’s vertical withdrawal target at link6 Z = 1.08 m failed the local precheck while retaining its partially tilted wxyz quaternion [0.095, −0.603, 0.073, 0.788]. It may be near a joint limit. I could try a smaller motion or change back to the downward-facing orientation with about 76° of yaw while lifting slightly. Would moving backward or downward help? Another possible right-arm target is (0.34, −0.02, 1.05) m with its current orientation. This would move it toward the robot by −0.037 m along Y and upward by 0.032 m along Z. That backward-and-upward withdrawal appears safe and likely easier for the precheck. I could try it for two control steps while lowering the left link6 to Z = 0.92 m, then lift the right arm farther afterward. If it failed, I could hold the right arm at its current pose, which I expect to pass, and proceed with the left arm alone. For now, I will hold the right arm at its current pose with its gripper open rather than attempt another withdrawal. It can remain above the basket without collision. I will use two control steps to finish the left gripper’s descent to Z = 0.92 m and close on the yellow car, then handle the right arm’s withdrawal after the left closure.

After two control steps, the left gripper’s opening command has decreased from 1 to 0.541, but the fingers may not yet be contacting the yellow car fully. In the wrist view, the fingers are near image X = 180 and 460 pixels, leaving a gap of about 280 pixels around a car body about 240 pixels wide. I will hold the left arm’s pose and continue closing for another two steps to establish contact. During the same two steps, I will begin withdrawing the right arm backward and upward toward link6 position (0.34, −0.02, 1.05) m, keeping its current orientation and its gripper open. I expect this shorter withdrawal target to pass the precheck.

The left fingers are contacting the yellow car around its doors at a suitable height, and the opening command is 0.328. I will make a two-control-step test lift toward a left link6 height of 0.963 m to verify the grasp. For the right arm, I initially considered continuing the withdrawal toward (0.36, −0.06, 1.08) m, but I may need to change its partially tilted, approximately 76° yaw posture to a top-down orientation for the beige bar. Its gripper is open. The beige bar appears near pixel (500, 235) in the high-camera view. The initial stereo estimates placed its left endpoint at (0.345, −0.0617, 0.785) m and its right endpoint at (0.4167, −0.1207, 0.7813) m, giving an estimated center of (0.3808, −0.0912, 0.783) m, roughly (0.38, −0.09) m in X and Y. With the tabletop estimated at Z = 0.76 m and the bar top at Z = 0.783 m, I estimate its thickness as 0.023 m. Its left-to-right long-axis vector in X and Y is (0.0717, −0.0590) m, at an angle of −39.5°. The current right wrist view shows the whole Dove bar on the table near the bottom-left of the red basket. To grasp across the bar’s width, I want a closing-axis line perpendicular to its long axis: −39.5° + 90° = 49.5°. The closing line is 180° plus the gripper yaw, modulo 180°, so I will use a top-down orientation with +49.5° yaw. The orientation change from the current partially tilted pose at about 76° yaw may be around 1.0 rad; I need to calculate it before deciding whether to target it directly. I am considering a right link6 approach target of (0.38, −0.09, 1.04) m from its current position of (0.341, 0.001, 1.038) m, an estimated distance of 0.10 m. If the orientation change is no more than 1.0 rad, I could approach directly for two control steps while test-lifting the car. That approach appears safe. I will first calculate the target quaternion, its angular distance from the measured right orientation, and a halfway orientation.

The calculated orientation change for the right gripper is only about 0.535 rad, so I can target the desired orientation directly. I will move it toward link6 position (0.38, −0.09, 1.04) m with a 49.5° yaw, keeping the gripper open. Two control steps will likely complete only part of that approach. During the same two steps, I will test-lift the yellow car with the left gripper.

The yellow car remains held after the 0.024 m test lift. The right arm is moving slowly toward the beige chocolate bar, and its orientation is changing. I could lift the yellow car another 0.05 m to further test the grasp before transporting it to the white basket. I need to find space around the two cars already in that basket. My current estimates put the bus on the left at X = −0.359 m, Y = 0.055 m, and the white car on the right at approximately X = −0.20 m, Y = 0.04 m, possibly toward the back. In the high-camera view, they appear near pixels (170, 179) and (203, 182). There may be space at the back near pixel (190, 160), or at the front near (190, 200). A possible yellow-car placement is the front-center position (−0.28, 0.02) m in X and Y. The estimated gap between the white car at X = −0.20 m and the bus at X = −0.36 m is 0.16 m, so the yellow car’s estimated 0.09 m length could fit between them. At that candidate position, its distance from the bus at (−0.36, 0.055) m would be about 0.088 m. The estimated half-lengths total 0.04 + 0.04 = 0.08 m, making that clearance tight but potentially adequate. Its distance from the white car at (−0.20, 0.04) m would be about 0.082 m. A back-center placement at (−0.28, 0.09) m would give estimated distances of 0.09 m from the bus and 0.1 m from the white car. The basket is approximately 0.24 m wide, so a triangular arrangement may fit three cars. I considered a front-center target at (−0.28, 0.015) m, but the estimated front rim is at Y = 0.014 m. With the car extending roughly 0.04 m along Y, depending on its orientation, that target could overlap the rim. Centering at Y = 0.055 m and X = −0.28 m would leave about 0.08 m to each existing car, which may still be tight. Could the yellow car rest stably on top of the other cars? Container placement permits support by other objects, but its stability would need checking. I would prefer to use the floor space: the basket is about 0.24 × 0.14 m, and each car is approximately 0.09 × 0.04 m. Three cars side by side would require 0.27 m, slightly more than the basket width, whereas two at the back and one at the front could fit. A possible arrangement would put the yellow car at (−0.28, 0.025) m, with the bus at back-left Y = 0.075 m and the white car at back-right Y = 0.07 m. However, their actual resting Y coordinates may both be nearer 0.04 m. I should refine the existing cars’ positions before choosing a placement. Using an assumed object-center height of Z = 0.78 m, bus pixel (170, 179) suggests approximately X = −0.359 m, Y = 0.063 m. White-car pixel (202, 184) might give X ≈ −0.246 m, but I need to calculate it. Its visible location may instead be around (204, 183). Although it was previously held near X = −0.20 m, Y = 0.04 m and might have settled near X = −0.20 m, pixel X = 203 suggests world X ≈ −0.23 m at Z = 0.78 m. For observation 355, my latest pixel estimates are bus center (169, 177) and white-car black roof center (206, 181). I will use Python and the high-camera calibration to unproject these points at Z = 0.78 m, then reassess a front-middle placement for the yellow car.

The updated position estimate puts the white car at X = −0.276 m, Y = 0.058 m, rather than X = −0.20 m. The bus is near (−0.366, 0.071) m in X and Y. Both are toward the left and center of the white basket, leaving space on the right near X = −0.18 m. This suggests the white car shifted left during release. I initially considered placing the yellow car at (−0.18, 0.055) m, but the basket’s estimated right edge is X = −0.14 m. Using a car half-width of 0.04 m, I will choose (−0.19, 0.06) m for more clearance. Its estimated distances from the white car and bus would be 0.086 m and 0.176 m. The yellow car is about 0.04 m wide and 0.09 m long, so the 0.086 m separation from the white car should work if their length orientations are similar. A front-right placement at (−0.19, 0.04) m is another possibility. The left link6 is currently at (0.021, −0.231, 0.947) m. Reaching the proposed basket position requires X and Y changes of −0.211 m and +0.291 m. I will first lift link6 to Z = 1.05 m. Using the tabletop estimate of 0.76 m and the grasp link6 height of 0.923 m, I estimate the car’s bottom at 0.76 + (1.05 − 0.923) = 0.887 m, giving clearance for transport. I can then use short motions with the gripper downward and yawed 28°. Joint limits may become an issue near the basket, so a tilt with the same yaw could help. For that tilt, I estimate the horizontal local-X direction from Rz(28°) × (0, 0.707) as approximately (−0.331, 0.624), with the negative X component also estimated as −0.332. The corresponding horizontal object offset has an estimated magnitude of 0.111 m, with components ΔX = −0.0369 m and ΔY = +0.0695 m. This swings the car left and forward toward the white basket, even if the current grasp is across its width. To place the car center at (−0.19, 0.06) m after tilting, I can use the estimated offset (−0.037, +0.069, −0.111) m and position link6 at X = −0.153 m, Y = −0.009 m. Moving there at Z = 1.05 m while downward-facing, then tilting, would put the estimated car center at (−0.19, 0.06, 0.939) m above the basket. Lowering link6 to Z = 0.94 m would then put its center near Z = 0.829 m and its bottom perhaps near Z = 0.81 m for release. The downward-facing path from approximately (0.02, −0.23) m to (−0.153, −0.009) m in X and Y is about 0.28 m. I can split it into waypoints at (−0.05, −0.15), (−0.10, −0.08), and (−0.153, −0.009) m. At Z = 1.05 m, a forward-reach limit may arise near Y = −0.08 m, in which case tilting earlier could help. Combining a lift and partial tilt during transport is another option, but it risks slipping. I prefer to keep the gripper downward until it is near the basket front, use slow five-step actions, and check that the grasp remains stable. The left opening command is currently 0.321 and should remain steady. The right link6 is currently at (0.347, −0.007, 1.041) m with wxyz quaternion [0.116, −0.615, 0.099, 0.774]. Its beige-bar approach target is (0.38, −0.09, 1.04) m with 49.5° yaw and wxyz quaternion [0.24474172, −0.66340146, 0.24474172, 0.66340146]. I estimate the remaining position distance at 0.09 m and orientation change at 0.3 rad. For the immediate action, I will continue that open-gripper approach while lifting the held yellow car to left link6 Z = 1.05 m at approximately its current X and Y. Both arms will use five control steps.

The yellow car remains secure after the 0.059 m lift. The beige bar is visible near pixel (265, 280) in the right wrist view, but the right gripper is still tilted and has not reached its final orientation. I will continue the right approach while beginning the yellow car’s raised transfer. The left link6 is currently at Z = 1.006 m, leaving 0.044 m to the intended height of 1.05 m. I will target (−0.04, −0.16, 1.05) m, with changes of −0.059 m in X, +0.072 m in Y, and +0.044 m in Z, for an estimated total displacement of 0.104 m. The right target will be (0.38, −0.09, 1.0) m with the final 49.5° yaw orientation, combining a 0.045 m descent with alignment. I will use five control steps for both arms. I estimate the beige bar’s top at Z = 0.783 m and the tabletop at Z = 0.76 m. Could its minimum grasp link6 height be 0.94 m? The minimum link6 height allowed by fingertip clearance may be around 0.918 m. For a bar about 0.02 m thick, a grasp height of 0.925 m might work, with the tips near Z = 0.767 m and the pads contacting the body above the table. The red bar was successfully grasped at link6 Z = 0.923 m; the beige bar is slightly thicker, so 0.923 m also seems suitable. For now, I will approach at Z = 1.0 m and lower farther afterward, keeping the left gripper closed and the right gripper open.

The beige chocolate bar now appears vertical in the right wrist view, with its center near pixel (285, 230). The right gripper’s current quaternion w component is approximately 0.213, close to the final orientation’s 0.245, but its measured X–Y position of (0.371, −0.051) m has not yet reached the target (0.38, −0.09) m. I will continue toward link6 position (0.38, −0.09, 0.95) m with the final alignment quaternion, keeping the gripper open. I estimate this target displacement at about 0.09 m. The yellow car remains stable during transport. I will move the left link6 toward (−0.10, −0.09, 1.05) m, retaining its orientation and closed gripper. I estimate that displacement at 0.103 m. I will use five control steps for both arms.

The beige bar’s center appears near pixel (290, 210) in the right wrist view, 30 pixels left of the gripper center. Its estimated world X–Y center is (0.3808, −0.0912) m, while the right link6 is currently at (0.375, −0.065) m in X and Y. The approximately +0.026 m Y offset toward the back explains the bar’s leftward appearance. Moving to X = 0.38 m, Y = −0.09 m should correct that alignment. The yellow car remains securely held and appears near pixel (270, 209) at the front of the white basket in the high-camera view. I could move the left link6 from its current position of (−0.086, −0.112, 1.045) m to the tilt staging pose at (−0.153, −0.009, 1.05) m, an estimated distance of 0.124 m. However, that forward target might fail the precheck at the current height of 1.045 m. I will instead use the closer waypoint (−0.125, −0.05, 1.05) m, with an estimated displacement of 0.077 m. I will use five control steps for both arms, keeping the yellow car clamped and its orientation unchanged. The open right gripper will move toward (0.38, −0.09, 0.94) m with its final alignment orientation. After reaching the left staging point, I plan to tilt the car into the basket.

The yellow car appears high in the image near pixel (254, 190), close to the white basket’s right edge. The current left link6 position is (−0.119, −0.066, 1.046) m. With the gripper pointing down, I estimate the held car’s center has the same X and Y coordinates and is at Z = 0.888 m. The desired center after tilting is (−0.19, 0.06) m in X and Y. Tilting at the current position with the intermediate orientation and 28° yaw would put its estimated center at (−0.156, 0.0035, 0.935) m, too close to the front rim at Y = 0.0035 m. I should first move link6 toward the planned staging position of (−0.153, −0.009, 1.046) m. That requires a change of (−0.034, +0.057, 0) m, with an estimated distance of 0.066 m. The forward motion from Y = −0.066 m to −0.009 m might fail the precheck in the downward pose, though this small move at Z = 1.046 m could pass. The beige bar appears centered near pixel (320, 200), so its alignment looks good. The right link6 is at Z = 0.962 m, leaving a downward residual of 0.039 m to the target height of 0.923 m. Five steps might reach that height, but three would provide better control near contact. I consider 0.923 m appropriate, using an estimated tabletop height of 0.76 m and fingertip height of 0.765 m. Three steps might produce about 0.033 m of descent, bringing link6 to roughly 0.929 m. Closure there might already work: the red bar was grasped at 0.923 m, while the beige bar is thicker, about 0.02 m. At link6 Z = 0.929 m, I estimate the fingertips at Z = 0.771 m and the bar’s center at Z = 0.772 m. I initially considered five steps for the left staging move and three or five for the right descent, then favored three steps for both. Since a failed left precheck would also prevent the right arm from moving, I will use the safer left intermediate waypoint at (−0.14, −0.03, 1.046) m, an estimated distance of 0.043 m, and leave the final staging correction for the next action. I will keep the yellow car clamped and both orientations unchanged while lowering the open right gripper toward link6 Z = 0.923 m over three control steps.

The yellow car is near the white basket’s front-right side. The left link6 is at X = −0.135 m, Y = −0.044 m, and its staging target is X = −0.153 m, Y = −0.009 m, about 0.039 m away. I could use three control steps for that correction. The right link6 is at Z = 0.935 m. Its quaternion w component is slightly off target, at 0.255 rather than approximately 0.245. The beige bar is centered near image X = 320 pixels, and the fingers are open. I could lower to Z = 0.923 m while beginning closure over two control steps. I will command that 0.012 m descent and closure, and use the same two steps to move the left arm toward its staging target.

The left staging target narrowly failed the precheck. I could hold the left arm at its current link6 position, (−0.135, −0.044, 1.043) m, close the right gripper, and later tilt the yellow car from the current position rather than finishing the staging move. With the 28° yaw and planned tilt, I estimate the car’s center would be (−0.172, 0.0255, 0.932) m, toward the white basket’s front-right interior. The front rim is near Y = 0.014 m. What is the car’s long-axis direction in the environment, and how would its footprint change during the tilt? It might extend ±0.03 m along Y, putting its front edge near Y = −0.005 m, outside the rim. Releasing from about Z = 0.93 m might let it fall mostly inside and settle, but there is a risk of catching the rim. A better option is a closer staging target at (−0.15, −0.02, 1.043) m, using Y = −0.02 m instead of −0.009 m. The Y change is +0.024 m. After the planned tilt, I estimate the car’s center would be (−0.187, 0.0495, 0.932) m, which looks ideal for placement. I estimate the X–Y displacement as (0.015, 0.024) m, with a total distance of about 0.028 m, and expect this shorter target to pass the precheck. I will use two control steps for this closer left-arm move while closing the right gripper on the beige chocolate bar.

After two control steps of closure, the right gripper’s opening command is 0.49. The fingers may still be open enough to need another two steps. The left arm’s position is close to the desired staging point. I will tilt the left gripper at its current position while finishing the right gripper’s closure. I am considering two control steps, though three may also be appropriate. First, I will calculate the left tilt quaternion by multiplying a 28° rotation about world Z by the intermediate carrying orientation.

The left gripper’s tilt target is approximately [0.4758, −0.3280, 0.1971, 0.7920] in wxyz order. Its current downward-facing orientation, with 28° yaw, is approximately [0.364, −0.606, 0.364, 0.606], so the planned orientation change is about 0.785 rad. I will use three control steps to tilt the held yellow car inward while keeping the left link6 position fixed at (−0.146, −0.032, 1.04) m. During the same three steps, I will finish closing the right gripper around the beige bar with its link6 target height at 0.923 m.

The right gripper’s opening command is 0.102. Are the fingers contacting the beige bar’s sides? In the wrist view, the bar spans approximately image X = 280–450 pixels, and the fingers are near X = 280 and 430 pixels, so the contact looks good. I will test-lift it toward a right link6 height of 0.955 m using two control steps. The left wrist has tilted only slightly, and the yellow car still appears secure. During the same two steps, I will continue toward the left gripper’s inward tilt target while keeping both grippers closed.

The right gripper’s opening command increased from 0.102 to 0.167 during the lift. The beige bar appears fixed relative to the fingers in the wrist view, but I am unsure whether it moved in the high-camera view. It may still be near pixel (500, 236); in observation 385, it appears unchanged near (500, 235). A lift of 0.019 m might produce a slight downward image shift that is difficult to see. Could the bar still be on the table while the fingers slide along it? As the wrist camera rises, a table-fixed bar would appear smaller and might shift upward in the wrist image as its local X coordinate increases. In observation 383, the bar spans approximately image Y = 0–420 pixels; in observation 385, it spans approximately Y = 0–430 pixels. Those similar extents suggest that it moves with the gripper. Perhaps its apparently unchanged high-camera position is due to the small lift and an arm shift. It may be held, and the opening command remaining at 0.167 rather than 0 is encouraging, but I should verify with a larger lift. I will use three control steps to lift the right link6 toward Z = 1.0 m while continuing the left gripper’s inward tilt of the yellow car for the same three steps.

The beige bar slipped during the larger lift, and the right opening command is now 0. Its high-camera position moved from approximately (500, 236) to (508, 233) pixels, but it remains on the table and appears more horizontal. The right fingers are closed and empty. The bar is visible near the top of the wrist image, below the gripper in the environment. At observation 388, the right link6 height is 0.982 m, the estimated fingertip height is 0.824 m, and the bar’s top is near 0.783 m, so it appears above the fingers in the image, at a smaller image Y coordinate. I need to reopen and regrasp with a better center and depth estimate. I initially considered descending to link6 Z = 0.92 m after localizing its new position and orientation. Its high-camera center is now approximately (508, 234) pixels, compared with the earlier (500, 236). One tentative endpoint pair is (484, 219) and (529, 246); another is (483, 218) and (530, 246). Possible corresponding right-wrist points are (203, 45) and (314, 290), but perspective makes those matches difficult. I could use updated stereo correspondences now, or approach with the gripper open and triangulate from a closer view. Using high-camera pixel (508, 234) on a Z = 0.78 m plane, I tentatively estimate X around 0.403 m. The earlier estimate at pixel X = 500 on that plane was X = 0.384 m, Y = −0.095 m; at pixel X = 508, I estimate X = 0.400 m, Y = −0.089 m. I will treat the new center as approximately (0.40, −0.09) m in world X and Y. The high-image long-axis vector is about (46, 27) pixels, suggesting positive world X and negative world Y, with a tentative long-axis angle of −30°. The current gripper yaw of 49.5° was chosen to grasp across the bar’s width when its long-axis angle was −39.5°. If the new angle is about −30°, a width-grasp yaw of 60° would be appropriate. The current alignment is only about 10° off, so one option is to retain it, reopen, and target (0.40, −0.09, 0.923) m. The earlier target was (0.38, −0.09) m in X and Y, near an estimated actual center of X = 0.381 m, but the bar may have slipped because it was thin, off-center, or insufficiently deep between the pads. An alternative is to grasp the wrapper ends along the bar’s length. Its width is only about 0.025 m, which makes the current width grasp difficult. An end grasp may provide more contact and resist slipping, especially if the smooth wrapper and tapered edges contributed to the failed lift. The red bar’s width grasp succeeded after a deeper approach, but the beige bar’s width grasp failed during the longer lift. The beige bar is about 0.09 m long. I initially estimated a maximum opening of 0.11 m, which would accommodate an end grasp; using a more cautious maximum gap estimate of 0.1 m, it would still be tight but feasible. If the bar is longer than 0.1 m, that approach would not fit. The initial stereo endpoint distance was sqrt(0.0717² + 0.059²) = 0.0928 m, and I estimate the moved bar still has the same length, approximately 0.093 m. For comparison, the red bar was about 0.082 m long. I will try grasping the beige bar’s ends at link6 Z = 0.923 m, then verify it with a test lift. To align the closing direction with the estimated −30° long axis, I can use the downward orientation with yaw −30°. The base closing direction is 180° plus yaw, so this gives a direction of 150°, equivalent to the −30° closing line. The fingers should then approach the ends, with the bar appearing horizontal in the wrist image. The approximate target wxyz quaternion is [0.6124, −0.3536, 0.6124, 0.3536], compared with the current yaw-49.5° quaternion of approximately [0.2447, −0.6634, 0.2447, 0.6634]. The yaw change is −79.5°, and I estimate the whole orientation distance at about 1.38 rad, exceeding the 1 rad command limit. Yaw 150° would provide the same undirected closing axis with the fingers swapped, but its change from 49.5° would be 100.5°, larger than 79.5°. I will therefore calculate a halfway orientation with Slerp before choosing the next pose. The right arm is empty at (0.385, −0.092, 0.982) m, so rotating with the fingers open above the bar appears safe. I considered a five-step move toward (0.40, −0.09, 0.98) m using the halfway orientation, followed by the final alignment and descent. I also need to finish placing the yellow car. The left gripper’s current wxyz quaternion is [0.422, −0.485, 0.293, 0.708], compared with the tilt target of approximately [0.4758, −0.328, 0.197, 0.792], with an estimated remaining orientation distance of 0.45 rad. The car appears near high-camera pixel (238, 164), above the white basket’s right side. It may be over the rim while still appearing contained. Another reading places its body near (238, 163), with the basket’s right rim near (250, 180). I should not release it yet if it partly overlaps the rim. I will continue the tilt for three steps, then lower and release it. Rather than use five steps for the right rotation while continuing the left placement, I can use three steps for both arms. First, I will calculate the right gripper’s final and halfway orientation targets.

I will move the open right gripper toward the beige bar’s end-grasp alignment using the halfway quaternion [0.4558, −0.5407, 0.4557, 0.5407] in wxyz order and a link6 target position of (0.40, −0.09, 0.98) m. At the same time, I will continue the left gripper toward its inward tilt target for the held yellow car, keeping its link6 position at (−0.146, −0.032, 1.04) m. I will use three control steps for both arms.

The right gripper’s opening command is 0.837, so it has not yet reached the fully open endpoint. Its current quaternion has w and x components of approximately 0.3 and −0.64, compared with approximately 0.455 and −0.54 for the halfway target. Is it still near the earlier 49° yaw? The rotation is incomplete, and the beige bar appears diagonally at the top left of the wrist view, off-center. Is the held yellow car fully over the white basket, or could it be above the back-right wall? In the high-camera view, it appears near pixel (228, 148), while the wrist view shows it above the basket floor near the back-right interior. The bus and white car are on the floor below it. Checking the rim more closely, I estimate the yellow car near (229, 148), spanning image X = 215–244 and Y = 137–162 pixels. The basket’s back rim is near image Y = 140 and its right rim near X = 250. I judge the car to be over the opening rather than on the rim, so I can release it inside. The left link6 position is (−0.144, −0.029, 1.042) m, with a partially tilted quaternion whose w component is 0.438. I estimate the yellow car’s center at (−0.177, 0.04, 0.93) m. The release would give an estimated 0.15 m drop to the floor. Could it land on the white car? Their estimated X coordinates are −0.177 m for the yellow car, −0.276 m for the white car, and −0.366 m for the bus, so I expect no overlap. I will hold the left arm’s pose and open its gripper for three control steps. During the same three steps, I will keep the right gripper open and continue toward its final −30° yaw alignment at link6 position (0.40, −0.09, 0.98) m for the beige bar’s end grasp. Then I will inspect whether the released yellow car remains stable inside the basket.

The right orientation target failed validation because its estimated angular distance from the current pose is 1.15 rad, exceeding the 1 rad limit. The current right quaternion is approximately [0.3, −0.64, 0.3, 0.64] in wxyz order, and the final target is approximately [0.612, −0.353, 0.612, 0.353]. The distance to that target was about 1.38 rad at obs_000388, and the subsequent three control steps did not reach the halfway orientation. Neither arm moved during the rejected action, so the yellow car was not released and obs_000391 remains valid. I could calculate a new halfway quaternion in Python, tentatively with a first component around 0.461, or reuse the previous halfway quaternion [0.4558, −0.5407, 0.4557, 0.5407]. I estimate the distance from the current orientation to that previous intermediate target at 0.66 rad, within the 1 rad limit. I will reuse it and execute three control steps, releasing the yellow car with the left gripper while moving the open right gripper toward that intermediate orientation.

The yellow car has settled stably inside the white basket, leaving only the beige chocolate bar. The left arm will eventually need to withdraw into clear space before the reset. I could start moving it toward an initial or neutral pose now, but that can wait until the right arm has secured the bar. The left arm may obstruct the high-camera view, though it does not obstruct the right arm. One possible left-arm withdrawal target is (−0.3, −0.25, 1.05) m, gradually returning to the initial orientation. Another is (−0.30, −0.25, 1.10) m. From its current tilted wxyz quaternion [0.438, −0.442, 0.268, 0.736], the rotation to the initial quaternion [0.707, 0, 0, 0.707] may be about 1.2 rad, exceeding the 1 rad limit and requiring an intermediate orientation. Keeping the current orientation while translating to (−0.30, −0.25, 1.10) m would instead require an estimated 0.27 m move, exceeding the 0.25 m distance limit. An intermediate position at (−0.23, −0.15, 1.10) m would be about 0.16 m away and appears safe. I could then continue toward the initial pose. For now, I will leave the left arm stationary and handle its clearance once the beige bar is secure; its fingers are still near the basket wall. The right wrist’s current quaternion is approximately [0.342, −0.619, 0.342, −0.619]—the recorded pose has a positive final component, [0.342, −0.619, 0.342, 0.619]. The remaining rotation to the halfway target, approximately [0.455, −0.540, 0.455, 0.540], is about 0.43 rad. The final end-grasp target, approximately [0.612, −0.353, 0.612, 0.353], may still be about 1.02 rad away, just beyond the per-action limit. I can continue toward the halfway orientation for three steps, then use the final orientation. The bar currently appears diagonal in the wrist view, with an estimated center at pixel (220, 180); I expect it to appear horizontal at the final alignment. The position target of X = 0.40 m, Y = −0.09 m only approximately matches the bar’s center, so I should refine its new position and orientation before descending. Is its high-camera center now near pixel (495, 243)? In observation 394, I estimate it near (493, 243), rather than the earlier (508, 234). Could the empty right gripper have inadvertently contacted and moved it while rotating? Observation 391 also showed it near (494, 244), so it may instead have fallen and rotated after the failed lift. That cause remains uncertain. My current high-camera endpoint estimates are (471, 234) and (518, 253), with a center near (494, 243). On an assumed Z = 0.78 m plane, this suggests a world center near X = 0.375 m, Y = −0.115 m. The target at X = 0.40 m, Y = −0.09 m would then be offset by approximately +0.025 m on both axes. In the right wrist view of observation 394, I estimate the bar spans from roughly (90, 20) to (325, 295), with a center near (210, 160). Its image center may change as the wrist reaches its final orientation and the position is corrected. I will triangulate the bar’s endpoints using the current high and right wrist camera extrinsics. My tentative correspondences are high-camera points (471, 234) and (518, 253) with wrist points (91, 32) and (320, 284), respectively. Looking more closely, I estimate the wrapper crimp at the wrist’s upper-left endpoint near (93, 20), with the lower-right endpoint still near (320, 284), and the high-camera endpoints near (472, 234) and (519, 253). I will use these approximate endpoint correspondences to calculate the bar’s 3D center and long axis before attempting the end grasp.

The reported axis angle of about −165° is wrong, apparently because the reversed vector components were passed to arctan2 in the wrong order. The endpoint difference B − A is approximately (0.0966, −0.0432, −0.0113) m. Using atan2(−0.0432, 0.0966) gives −24.1° for the long axis in the X–Y plane, so its line is approximately −24°, equivalently 156°. For an end grasp, I want the closing direction along that line, using a yaw of −24° or 156°. My previous −30° yaw target is close, only about 6° off. A final −24° yaw quaternion might be approximately [0.637, −0.334, 0.637, 0.334] in wxyz order, although the previous −30° target, approximately [0.612, −0.353, 0.612, 0.353], would also be acceptable. The refined bar center is approximately X = 0.3746 m, Y = −0.1062 m, with its top near Z = 0.77 m. I should correct the approach to X = 0.375 m and Y = −0.106 m from the previous target of X = 0.40 m and Y = −0.09 m. The endpoint distance is approximately 0.106 m, which may be too long for an end grasp if the maximum opening is only 0.10 m. These endpoints include the wrapper crimps. The earlier length estimate was 0.093 m; the new 0.106 m estimate could reflect correspondence errors or the actual length. I might grip slightly inward from the full crimps, over a span of about 0.09 m, or the fingers might compress the wrapper ends. There is a risk of pushing the bar during closure if it is too long. The width grasp already failed, but I could retry it with better centering and a deeper link6 height of 0.918 m. An end grasp may be more secure if the bar fits. The fully open native command of 1 might correspond to a physical gap near 0.10 m. In the initial high-camera view, the fingertips were near image X = 96 and 166 pixels, a gap of 70 pixels at a depth of about 0.44 m, suggesting a world gap of approximately 0.107 m. Thus, my estimated maximum opening is 0.10–0.11 m, and the 0.106 m bar may just fit. I will try the end grasp. From the current right quaternion, approximately [0.342, −0.619, 0.342, 0.619], I estimate the orientation distance to the final −30° yaw pose at about 1.04 rad and to the −24° pose at about 1.09 rad. I will first reuse the previous halfway quaternion [0.4558, −0.5407, 0.4557, 0.5407] at link6 position (0.375, −0.106, 0.98) m, then pursue the final −24° alignment afterward. This intermediate orientation follows the previous −30° alignment path. During the same four control steps, I will withdraw the empty left arm toward (−0.23, −0.15, 1.10) m, retaining its current orientation and keeping its gripper open. That withdrawal appears safe. Both grippers will remain open for this action.

The apparent formula mismatch came from my earlier check using cos 28° rather than cos 14°. For θ = 28°, c = cos 14° ≈ 0.970 and s = sin 14° ≈ 0.242. This gives w = 0.5(0.970 − 0.242) ≈ 0.364, x = −0.5(c + s) ≈ −0.606, y ≈ 0.364, and z ≈ 0.606, matching the script. The formula is consistent. For θ = 76.2°, c = cos 38.1° ≈ 0.787 and s ≈ 0.617, giving the wxyz components [0.085, −0.702, 0.085, 0.702]. For θ = −24°, c = cos(−12°) ≈ 0.978 and s ≈ −0.208, giving [0.593, −0.385, 0.593, 0.385]. The correct normalized target for the beige bar’s end-grasp alignment is therefore [0.59302965, −0.38511795, 0.59302965, 0.38511795]. My previous approximation using values around 0.637 and 0.333 was mistaken; I am unsure what angle it corresponds to. I estimate the whole-orientation distance from the current right quaternion, whose first two components are approximately 0.382 and −0.595, to the corrected target at about 0.77 rad, below the 1.0 rad limit. I will retry with the exact quaternion and retain the same left-arm withdrawal target.

The right wrist’s quaternion w component is still about 0.429 rather than the final target’s 0.593, so the rotation is incomplete. The beige bar appears diagonal in the wrist view, extending approximately from pixel (200, 50) to (410, 290). Is it approaching horizontal? At the final −24° yaw, its long axis should appear horizontal for the end grasp. The bar’s estimated X–Y center is (0.3746, −0.1062) m, close to the current right link6 position of (0.377, −0.105) m in X and Y. At the final orientation, I expect the object to be centered near image X = 320 pixels. I will use five control steps to continue toward the final wxyz quaternion [0.59302965, −0.38511795, 0.59302965, 0.38511795] and target right link6 position (0.375, −0.106, 0.94) m, keeping the gripper open. This requests a 0.04 m descent to 0.94 m; I can descend toward 0.923 m afterward. During the same five steps, I will continue withdrawing the open left gripper toward link6 position (−0.23, −0.15, 1.1) m.

The right wrist’s quaternion w component is approximately 0.487, still short of the final target’s 0.593, but the beige bar appears nearly horizontal. In the wrist image, the bar spans X = 110–480 pixels, or 370 pixels, compared with an estimated open finger gap of about 400 pixels. It appears to fit, though barely. I expect it to appear exactly horizontal at the final end-grasp alignment. The left link6 is at (−0.226, −0.144, 1.098) m, near its staging pose and clear of obstacles. I could continue returning it toward its initial pose later; for now, I will hold its current pose with the gripper open. I will use three control steps to finish the right wrist’s alignment toward the wxyz quaternion [0.59302965, −0.38511795, 0.59302965, 0.38511795] and lower its link6 toward (0.375, −0.106, 0.923) m. Three steps may suffice. I will keep the right gripper fully open, with opening command 1, before closing for the end grasp at link6 Z = 0.923 m.

The right wrist has not reached its final orientation. Its quaternion w component is 0.52 versus the target’s approximately 0.593, with an estimated 0.4 rad of rotation remaining. Why is the rotation progressing so slowly? The beige bar still appears diagonal. The right link6 is now at Z = 0.928 m, near the table. Further rotation could sweep the open fingers into the bar and displace it. It would have been better to finish the orientation at a higher position before descending, but the gripper is already low. I could rotate the remaining estimated 0.4 rad slowly over two control steps and monitor the result. However, the bar spans roughly image X = 80–520 pixels, nearly the full finger gap, so even that rotation could push it. Perhaps I should stop rotating and close from the current pose. The open left finger occupies approximately image X = 0–120 pixels, and the right finger is at X = 520 pixels and beyond, near Y = 250 pixels. The bar’s endpoints are approximately (80, 150) and (510, 360) pixels, close to the fingertips. Although the bar is diagonal, closing may contact its ends securely without making it perfectly horizontal. The closing direction is along local Y, and I estimate the bar’s long axis is only about 20° off that direction. I considered closing for two steps and inspecting, but I will use three control steps. I will hold the right link6 at (0.376, −0.106, 0.928) m with its current wxyz quaternion [0.52, −0.479, 0.52, 0.479], whose norm is approximately 1.000, rather than command further rotation. I will hold the left arm in place with its gripper open. If closure pushes the bar’s center, I can adjust afterward.

The right gripper’s opening command is now 0.373. Are the fingers contacting the beige bar near its ends? In the wrist view, the left finger at approximately pixel (150, 250) appears to touch the wrapper near its left crimp, and the right finger at approximately (430, 300) appears to touch near the right end. This looks promising. The bar rotated slightly during closure but remains between the fingers. I will make a two-control-step test lift toward a right link6 height of 0.955 m, keeping its orientation fixed and its gripper closed. I will hold the left arm in place during those two steps.

The beige bar stayed fixed relative to the right wrist during the test lift, and the opening command of 0.317 is consistent with contact. In the high-camera view, its center moved from approximately (495, 245) to (510, 252) pixels, lower in the image, indicating that it lifted with the gripper. The end grasp should be more stable. I will make a larger lift toward a right link6 height of 1.0 m over three control steps to further confirm the grasp.

The right opening command decreased from 0.317 to 0.161, and the beige bar has rotated within the grasp; it now looks horizontal in the wrist view. Is it still held at its ends, or has it partly slipped so that the fingers are pinching nearer the center? In the high-camera view, the bar appears vertical near pixel (510, 235), consistent with being lifted. The right link6 height is 0.986 m, the estimated fingertip height is 0.828 m, and the bar center may be near Z = 0.83 m. In the wrist view, the bar is between image X = 200–400 pixels and extends approximately from (180, 120) to (400, 300), with the fingers near X = 230 and 400 pixels. It may have rotated into a grasp across its width rather than at its ends, but it appears secure for now. I should proceed carefully with small lifts and transport motions, without sudden rotations. It might slip during a larger lift, so one option is another three-step lift toward link6 Z = 1.03 m before transporting it. I tentatively put its current bottom near Z = 0.78 m, although the estimate using the table height of 0.76 m plus a 0.058 m lift gives 0.818 m. The basket rim is near Z = 0.84 m, and I estimate that link6 Z = 1.03 m would put the bar’s bottom at 0.862 m. The red basket is nearby, with an estimated center at X = 0.30 m, Y = 0.057 m. From the current right link6 X–Y position of (0.376, −0.108) m, the horizontal changes toward that center would be −0.076 m in X and +0.165 m in Y. The current wxyz quaternion [0.52, −0.479, 0.52, 0.479] is not the intended −24° yaw pose. It might be somewhere between the earlier 49° and −24° orientations, perhaps around 10° yaw. Its local X axis still appears to point downward: the quaternion has the form [a, −b, a, b], which describes the downward pose with yaw. Under that assumption, the held bar’s center shares the link6’s X and Y coordinates. I could transport it with short downward-facing motions and then lower it. The right arm previously encountered a forward-reach limit near Y = −0.011 m, but shifting first may allow a release over the front interior. Possible waypoints are (0.34, −0.06, 1.03) m and then (0.32, −0.01, 1.02) m. The red bar already rests near X = 0.293 m, Y = 0.049 m, so I need to avoid colliding with it. A beige-bar placement at X = 0.36 m, Y = 0.05 m would be on the right side, with an X separation of 0.067 m from the red bar. The beige bar is about 0.1 m long, but its world long-axis direction after rotating within the grasp is uncertain. If its footprint along X is only about 0.03 m, it may fit easily. A center at (0.37, 0.05) m would leave its right end near X = 0.42 m for an estimated half-length of 0.05 m, inside the basket’s right edge near X = 0.43 m. If its long axis instead runs along X, it would span approximately X = 0.32–0.42 m, while the red bar spans X = 0.25–0.34 m. Their overlap from X = 0.32 to 0.34 m could cause contact if they share the same Y position. Placing the beige bar at the front-right near Y = 0.02 m and the red bar at the back-left near Y = 0.05 m could separate them. However, the front rim is near Y = 0.014 m, and even a center at Y = 0.03 m could overlap that rim if the bar’s Y extent is about 0.03–0.05 m. A placement at X = 0.37 m, Y = 0.06 m would give an estimated separation of 0.077 m from the red bar and may work if their long axes differ. Resting on top of the red bar is also acceptable for container placement if the support is stable. I will favor the right side near (0.37, 0.055) m. Another approach is to transport link6 to (0.36, −0.01, 1.03) m and then tilt inward. With the gripper downward at Y = −0.01 m, the object would still be near the front rim; I would prefer its center near Y = 0.05 m, but forward reach may prevent that. I could lower link6 to Z = 1.0 m and move toward Y = 0.03 m before release. Using the grasp link6 height of 0.928 m and table height of 0.76 m, I estimate the bar’s bottom at Z = 0.832 m when link6 is at 1.0 m, slightly below the 0.84 m rim and potentially causing contact. At link6 Z = 1.02 m, the estimated bottom is 0.852 m, providing clearance. Previously, the right arm at link6 Z = 1.017 m and Y = 0.016 m could not reach Y = 0.05 m, so a tilt may be more useful than further forward translation. I can estimate the current yaw from the quaternion. For a downward pose with yaw θ, the quaternion has the form [a, −b, a, b], where a = 0.5(c − s), b = 0.5(c + s), c = cos(θ/2), and s = sin(θ/2). Using a = 0.52 and b = 0.479 gives c = a + b = 0.999 and s = b − a = −0.041. Thus, θ/2 is approximately −0.041 and θ is about −4.7°. The wrist therefore stopped rotating before reaching the intended −24° pose. A tilt at yaw −4.7° would give a horizontal local-X direction near 85.3°, mostly along world +Y with a small +X component. That is favorable for moving the bar inward without much lateral shift. I could stage link6 at (0.36, −0.02, 1.03) m and then tilt to the intermediate carrying orientation at the current yaw. The estimated object-center offset would be (+0.0093, +0.1107, −0.111) m, putting its center near (0.369, 0.091, 0.919) m. That would be inside the basket at the back-right, but close to the back rim near Y = 0.10 m; the fit would depend on the bar’s orientation. A partial tilt could instead center it near Y = 0.05 m. A better staging point is (0.36, −0.04, 1.03) m. With the full intermediate tilt, I estimate the bar center near (0.369, 0.071, 0.919) m, on the basket’s right side. Its estimated distance from the red bar at (0.293, 0.049) m would be 0.078 m. I could then lower link6 to Z = 0.94 m, putting the bar center near Z = 0.829 m and its bottom near 0.81 m before release. For the immediate action, I will combine the lift with a short move toward right link6 position (0.36, −0.04, 1.03) m. From the current pose (0.376, −0.108, 0.986) m, I estimate the target distance at 0.082 m. I will use four control steps, retain the current approximate wxyz quaternion [0.52, −0.479, 0.52, 0.479], keep the right gripper closed, and hold the left arm in place. I will then check that the grasp remains secure before tilting. For the later tilt, I can refine the yaw using the more precise measured quaternion in observation.json. If the rotation matrix’s local-Y direction is (−cos θ, −sin θ), then θ = atan2(−Y_y, −Y_x). I can use that yaw to form the tilt target as Rz(θ) multiplied by the intermediate carrying orientation.

The beige bar has slipped again and now lies on the table near the front of the red basket, around high-camera pixel (490, 235). The right gripper is empty and closed. I need a more reliable grasp after the repeated failures at the wrapper ends and across the width. Could I approach from the side with horizontal fingers and orient the local Y closing axis along world Z to pinch the bar’s top and bottom? Getting one finger underneath would require lifting an edge first. Pushing is also allowed, so I could try sliding the bar toward the basket, but the approximately 0.08 m-high front rim prevents a simple slide along the table. Pushing it up the inclined basket wall might work, but seems risky and uncontrolled. Moving the basket closer or tipping it is another possibility, though unnecessary at this point. Picking up the open-top basket and placing it over the bar would not provide a useful way to contain it. Using both arms might be justified after repeated single-gripper failures. I could grasp one wrapper end with each arm and lift together, but coordination would be complicated and the left arm is far away. Alternatively, the left arm could lift an edge while the right grasps across the width. I should try a better single-arm grasp before resorting to assistance. The slipping may result from low closing force or the smooth wrapper. The raised middle of the bar is thicker, approximately 0.02 m, while the wrapper ends are thin. A centered grasp across the thicker body may retain it better. The earlier width grasp may have failed because it was off-center or because the bar rotated. I will try again at the exact center of the thick middle, with a deeper link6 target height of 0.918 m and a slow test lift. The bar’s current long axis looks mostly vertical in the high-camera image, perhaps with a small world X component and a positive Y component, though I am uncertain. Unprojecting an approximate center at pixel (492, 236) onto a Z = 0.78 m plane might put its world X coordinate near 0.365 m, but stereo triangulation should refine this. In the right wrist view from observation 422, the bar appears vertical around pixel (330, 150), while the closed gripper is at the bottom of the image and the object remains on the table. The current gripper yaw is approximately −4.7°, with a closing-axis line near 175°, almost along world X. Since the bar appears vertical in the wrist view, that closing direction already crosses its width. I can reopen, center the gripper over the bar while preserving this orientation, descend toward link6 Z = 0.918 m, and close on the thicker middle. I will first estimate its exact center and orientation from the two views. My high-camera estimates are a center at (491, 236), a top endpoint at (482, 218), and a bottom endpoint at (505, 256). From the far top endpoint toward the nearer bottom endpoint, its world long axis might instead have a small X component and a negative Y component; I need the calculation to resolve that estimate. In the right wrist image, I estimate the center at (330, 145) and the endpoints at (300, 50) and (370, 260). I will triangulate the top wrapper crimp using high-camera pixel (482, 218) and right-wrist pixel (300, 50), and the bottom crimp using (505, 256) and (370, 260). Using the current right-wrist calibration, camera index 2, I will calculate the bar’s 3D center and world long-axis angle before choosing the precise right-arm position target.

The triangulated beige-bar center is approximately X = 0.3773 m, Y = −0.0884 m, with its top near Z = 0.767 m. Its long axis is about −75°, so the desired closing-axis line across its width is 15°. The base closing line is 180° plus yaw; a yaw of +15° gives a line at 195°, equivalent to 15°. The current yaw of approximately −4.7° gives a closing line at 175.3°, equivalent to −4.7°, leaving a 19.7° difference. The bar may therefore appear about 20° from vertical in the wrist view. Rotating to +15° yaw should align the fingers across its width. I estimate the whole-orientation change at about 0.34 rad and consider it safe. I am unsure of the target quaternion components—perhaps values near 0.467 and −0.521—so I will calculate the exact quaternion first. The right link6 is currently at (0.369, −0.083, 1.002) m, and its empty gripper needs to reopen. I plan a four-step action toward (0.377, −0.088, 0.94) m with the +15° yaw orientation and the gripper open, then a further descent toward Z = 0.918 m. I need to close around the thicker middle, approximately 40–60% of the way between the bar’s endpoints. The computed midpoint is (0.3773, −0.0884) m in X and Y; the “Dove” label near high-camera pixel (493, 236) may correspond to that thick center. Contacting the raised chocolate body’s sides there should be more secure. A link6 grasp height of 0.918 m would put the estimated fingertips at Z = 0.7604 m, near the estimated tabletop height of 0.76 m, giving maximum depth. The precheck or actual descent may stall around 0.928 m because of table contact. A height of 0.923 m worked for the red bar; for the beige bar’s approximately 0.02 m-thick middle, that would put the tips near Z = 0.765 m and may provide good pad contact. The previous width grasp at link6 Z = 0.929 m had an opening command of 0.102 but slipped during the lift toward Z = 0.982 m. Could I reach 0.918 m without table collision? The red-bar descent stopped at 0.923 m, so this attempt may likewise remain at 0.923 m despite the lower target. I will calculate the exact +15° yaw quaternion before the planned four-step approach and keep the left arm stationary in clear space.

The quaternion for a 15° yaw is approximately [0.43046, −0.56099, 0.43046, 0.56099] in wxyz order. I estimate the orientation change from the current right-gripper pose at about 0.34 rad. I will use four control steps to move the right link6 toward (0.377, −0.088, 0.94) m with the gripper open, while holding the left arm at its current pose.

The beige bar appears vertical in the wrist view and centered at image X = 320 pixels. The right wrist’s quaternion w component is still approximately 0.479 rather than the target’s 0.430, so alignment is incomplete. Its opening command is 0.968. I will keep the gripper open and use three control steps to finish the orientation and lower the right link6 toward Z = 0.923 m. Its current height is 0.972 m, leaving a downward residual of 0.049 m. I estimate that three steps will lower it by about 0.033 m to 0.939 m, followed by two more steps. I will execute the first three steps now.

The right link6 is currently at Z = 0.948 m. The beige bar’s center appears at pixel (320, 210), while the fingertip reference is at image Y = 275 pixels. I need another 0.025 m of descent to reach a link6 height of 0.923 m. I will use two control steps with a lower target of Z = 0.918 m, aiming for the actual height to reach 0.923 m. The right wrist is nearly at the final orientation: its quaternion w component is about 0.445, compared with the target’s 0.430. I will keep the gripper open for these two steps and wait until the next observation before closing.

At the current right link6 height of 0.929 m, I estimate the fingertips are at Z = 0.771 m, leaving a 0.011 m gap above the estimated tabletop height of 0.76 m. This may not be deep enough to grip the sides of the beige bar’s thicker middle. The previous command targeted 0.918 m but produced only 0.019 m of descent, reaching 0.929 m. Another two control steps toward 0.918 m may bring the actual link6 height to about 0.923 m, after which I can close. The bar’s center appears at image Y = 260 pixels, near the fingertip reference at Y = 275 pixels, so the alignment looks good. Closing now at 0.929 m would resemble the previous failed width grasp at that height, when the opening command reached 0.102 before the bar slipped. Lowering to about 0.923 m may improve contact. I will keep the right gripper open and command two more control steps toward a link6 height of 0.918 m.

The right link6 lowered only 0.001 m, so I conclude that 0.928 m is the table-safe minimum height for the current orientation. Could the yaw affect the fingertip clearance? The fingers are still pointing downward, so I am unsure. The beige bar’s thick middle is now exactly centered, so closing should secure it. I initially considered three control steps followed by a test lift, but four steps may better establish and maintain contact. I will use four steps for closure, then test the grasp.

The right gripper’s opening command is 0.214. The fingers appear to contact the beige bar’s sides around its thicker middle, near image X = 250 and 390 pixels at Y = 300 pixels. The bar’s apparent width is about 120 pixels, so the contact looks good, though the grasp still needs verification. I will make a single-control-step test lift toward a right link6 height of 0.938 m, approximately a 1 cm lift, and inspect the next observation. This slow lift may help avoid slipping.

The beige bar remained held after the one-step lift, and the right gripper’s opening command is stable at 0.211. I should continue lifting very gradually, using one or two control steps at a time, and perhaps avoid rotations. I will make a two-step test lift toward a right link6 height of 0.958 m, approximately 2 cm higher, then inspect the next observation.

The beige bar remains securely held, and the slow lifts are working. I will continue with two control steps toward a right link6 height of about 0.98 m, then perhaps raise it to 1.0 m. I considered using three steps, but an earlier attempt targeting 1.0 m from 0.982 m failed when the grasp was poor. The current grasp appears secure, so I will use two steps toward 0.978 m and inspect the next observation.

The right gripper’s opening command is stable at 0.208. I should gradually raise its link6 to 1.03 m. I could use three control steps toward 1.01 m, then two toward 1.03 m, though two-step increments might be slower. There are 658 control steps remaining, so there is plenty of budget. I will use three steps now toward a link6 height of 1.01 m, a planned lift of 3.4 cm, then inspect the next observation for continued grasp stability.

The beige bar remains securely held. In the high-camera view, it appears near pixel (520, 237), at the red basket’s front-right side. Using the estimated tabletop height and grasp height, I estimate its bottom at 0.76 + (1.008 − 0.928) = 0.84 m, level with the estimated 0.84 m rim. I could lift for another two control steps toward a link6 height of 1.03 m before transporting it. The current gripper points downward with a 15° yaw. Tilting with that yaw would give local X a horizontal direction at 105°, producing estimated object offsets of −0.028 m along X and +0.108 m along Y. This would swing the bar forward and slightly left. From a link6 staging position of (0.39, −0.04, 1.03) m, I estimate the tilted bar’s center would be at (0.362, 0.068, 0.919) m, on the right side of the red basket. I will combine the remaining lift with the forward move to that staging position. From the current link6 position of (0.377, −0.089, 1.008) m, I estimate the target distance at about 0.052 m. The grasp is stable, so I will use three control steps while preserving the current orientation, raising the bar’s bottom for rim clearance before tilting it inward.

The beige bar’s middle grasp remains stable. The right link6 is currently at (0.382, −0.072, 1.015) m. I estimate the bar’s bottom at Z = 0.847 m, just clear of the red basket’s rim at Z = 0.84 m. I will continue toward the staging target at (0.39, −0.04, 1.03) m for three control steps.

The right link6 is currently at (0.386, −0.057, 1.021) m, close to the staging target. The beige bar appears near pixel (525, 216) in the high-camera view, still in front of and to the right of the basket. I will continue toward (0.39, −0.04, 1.03) m for three control steps, which may reach the staging position. Then I can tilt the bar inward over the basket.

The right link6 is now at the staging position (0.389, −0.044, 1.027) m. I estimate the beige bar’s bottom height as 0.76 + (1.027 − 0.928) = 0.859 m, above the basket rim at 0.84 m. I will compute the tilt quaternion by multiplying a 15° rotation about world Z by the intermediate carrying orientation. I estimate that the full tilt will offset the bar’s center by −0.0288 m along X, +0.108 m along Y, and −0.111 m along Z, placing it near (0.360, 0.064, 0.916) m on the red basket’s right side. That looks like a suitable placement position. I will tilt slowly, two control steps at a time, and check the finger gap after each action. First, I need to calculate the quaternion.

I will use two control steps to begin tilting the right gripper inward toward the wxyz quaternion [0.56236, −0.30360, 0.23296, 0.73301], keeping its link6 position fixed at (0.389, −0.044, 1.027) m. I will hold the left arm at its current pose.

The beige bar’s grip remains stable after the first tilt increment. I will continue the inward tilt over the red basket for two more control steps.

The beige bar’s grasp remains stable. In the high-camera view, it is near pixel (520, 200), close to the red basket’s right rim and not yet fully inside. I will continue the inward tilt for two control steps.

The beige bar initially appears to be over the red basket’s right interior, with the basket behind it in the wrist view. I could continue for perhaps two more control steps toward the full tilt, but is it safe to release now? In the high-camera view, I estimate the bar near pixel (515, 191) and wonder whether the basket’s right edge is near image X = 500. Another reading puts the basket’s extent at X = 385–510 and Y = 140–210 pixels, with the bar near (515, 190), just beyond its right edge. The wrist view also leaves me uncertain about the right wall. The bar could be above the outer rim rather than fully over the interior. Moving slightly left while tilting may be necessary before release. The current right link6 position is approximately (0.39, −0.042, 1.029) m, with wxyz quaternion [0.478, −0.491, 0.376, 0.624]. I tentatively estimate the partial tilt at about 20°. I should estimate the bar’s center from this measured orientation before deciding on another motion. The bar’s center is not necessarily at the farthest fingertip extent of 0.1576 m along local X. The grasp contact is on the finger pads, and the center might be near local X = 0.14 m, or approximately 0.14–0.16 m. When the gripper pointed downward, both the estimated bar center and link6 had X–Y coordinates near (0.377, −0.088) m. Using link6 Z = 0.928 m and estimated bar-center Z = 0.767 m gave a local-X offset of 0.161 m, so 0.1576 m is a close approximation. As the gripper tilts, I am assuming the held bar rotates with it. I will use Python to obtain the current local-X direction from the quaternion and estimate the bar center as p + 0.1576 × R[:, 0].

The calculation indicates that the gripper has tilted only about 13° from downward. Its local X direction has a downward component of 0.972 and a horizontal magnitude of 0.234. The estimated beige bar center is at (0.380, −0.006, 0.876) m, still near the red basket’s front-right rim. At the full tilt target, I estimate its center would be at (0.36, 0.064, 0.918) m. Could the bar’s bottom be about 0.01 m below its center? That would put the bottom near Z = 0.866 m, above the rim at Z = 0.84 m, so the clearance appears safe. I should continue toward the full tilt to bring the center to Y = 0.064 m inside the opening. The grasp remains stable, so I will continue gradually for two control steps.

The beige bar’s current center may be near (0.374, 0.008, 0.889) m. It is still near the red basket’s front rim but is moving inward. I will continue the tilt for two control steps toward the full intended tilt.

In the high-camera view, the beige bar is near pixel (510, 177), at the red basket’s right edge. I estimate its center at (0.368, 0.022, 0.90) m, placing it in the front-right interior. It may be safe to release once its center reaches Y = 0.04 m. I will continue the inward tilt for two control steps.

The beige bar remains securely held after the right link6 lowered by 0.034 m. In the high-camera view, the bar is near pixel (505, 186), close to the red basket’s right edge, but its center appears inside the opening. I will lower it for another three control steps toward a right link6 height of 0.96 m. The actual height may reach about 0.962 m, with the bar’s bottom near 0.82 m, inside the basket. I will make this short descent before releasing it.

The right gripper’s opening command has increased to 0.283, and the beige bar has shifted and rotated, likely from contact with the basket floor or wall. It now appears supported. In the high-camera view, the bar is near pixel (480, 180), inside the right basket, so I can release it now. I will open the right gripper for three control steps while holding both arms at their current poses. Then I will inspect the next observation to verify that the bar remains contained.

The beige bar is stable inside the red basket. All seven objects are sorted: three cars in the left basket, two peppers in the middle basket, and two chocolate bars in the right basket. Native_success is still false at obs_000475 because the required arm return remains. Before calling robot_reset, I need to clear the right gripper from the basket. The left link6 is at (−0.226, −0.144, 1.098) m and appears clear above the table. The right link6 is at (0.387, −0.041, 0.969) m, with the fingers open and the wrist partially tilted near the red basket’s right wall. Resetting from there could cause a collision. I could move the right arm backward and upward toward (0.36, −0.12, 1.08) m while retaining its orientation, or rotate toward the initial orientation. An earlier vertical withdrawal in a tilted posture failed, but moving toward the robot to Y = −0.12 m while rising to Z = 1.08 m might pass; I estimate that move at 0.132 m. For the immediate action, I will instead target (0.36, −0.14, 1.08) m, retain the current wxyz quaternion [0.516, −0.416, 0.313, 0.68], and keep the gripper open. I considered a two-step withdrawal, but my selected action will use six control steps while holding the left arm in place. I also considered preparing the left wrist’s initial wxyz orientation [0.707, 0, 0, 0.707]. From its current quaternion [0.437, −0.442, 0.268, 0.736], the orientation change might be about 1.3 rad, exceeding the 1 rad limit and requiring an intermediate pose. That preparation is unnecessary if the arm is already clear, because robot_reset will return the joints to their initial configuration. After the withdrawal, I will inspect the measured poses and verify that the objects remain stable. Once both arms are clear, I can call robot_reset, perhaps allowing 50 control steps because both arms are relatively far from their initial configurations. The initial link6 positions are (−0.3, −0.352, 0.922) m on the left and (0.3, −0.352, 0.922) m on the right. I estimate the current left position is 0.25 m from its initial position and the proposed right clearance position is 0.26 m from its initial position. Fifty reset steps may be enough, but I will inspect the result and call reset again if the arms have not returned and the episode remains active.

The right arm moved backward and upward by about 0.07 m. It is still near the basket, but its fingers are now outside the front-right area, and the basket contents remain stable. I will withdraw it farther toward (0.34, −0.22, 1.10) m while retaining its current orientation. I estimate this move at 0.159 m; the precheck may pass because the arm is moving toward the robot. The left wrist view shows the white basket behind the empty gripper. I will move the left arm from (−0.226, −0.144, 1.098) m to (−0.26, −0.25, 1.08) m, retaining its current orientation and keeping the gripper open. I estimate this distance at 0.113 m. This appears safe and will bring the arm closer to its initial position while providing clearance. I will use eight control steps for both arms, with both grippers open, then plan a 50-step reset once they are clear. If the right target fails the precheck, neither arm will move, and I can retry with a shorter waypoint.

Both arms are now in clear, open space, and all objects have been released. I can call robot_reset to return both arms to their initial joint configurations. I will allow 50 control steps because the arms are approximately 0.2 m from their initial positions and their joints are still far from the initial configurations. Execution may finish earlier if native termination occurs.

The episode has ended with native_success true and reports successful completion, so I must not issue any more robot actions. All seven objects are sorted, and the reset command has run. I should briefly report the supplied outcome. The reset feedback also says reached_home is false because native termination occurred during the return. Did the episode terminate successfully because the arms were near home? That remains uncertain. The final end-effector height is 0.978 m compared with the initial 0.922 m, and the reported maximum home joint error is about 0.355 rad. I should therefore avoid claiming that the arms returned exactly to their initial configurations, even though native_success true permits reporting task success. I considered explicitly mentioning reached_home false or saying only that the reset sequence was issued. The latter could imply that the sequence is still pending, while the episode has already ended successfully. I will keep the final report concise: all seven objects are in their designated baskets, native_success is true, and the robot reset sequence has finished. This reports the supplied outcome without claiming exact arrival at home.