按语言分拣物体任务成功

I need to sort the objects into their assigned baskets and then reset the robot. I’ll first read the robot-manipulation skill and the initial observation, then inspect the images and calibration to estimate object positions and poses. There is no need to spawn other agents. My initial reading of the head-camera image is that the left basket is white, the middle basket is blue, and the right basket is red. There appear to be seven objects: two peppers, three chocolate bars, and two wooden toys. The apparent image locations are a green pepper at (126, 271), a Snickers bar at (197, 260), a brown wooden toy at (238, 237), a yellow pepper at (244, 285), a yellow or white chocolate bar at (369, 251), a red chocolate bar at (466, 264), and a white wooden toy at (526, 246). I need to confirm these identifications and put the peppers in the left basket, the chocolate bars in the middle basket, and the wooden toys in the right basket. I could use both arms in parallel for objects on the left and right, with sequential actions where needed. I need careful position estimates from the cameras. Calibration-based projection and wrist images may help, possibly with code to triangulate positions using the tabletop plane. I still need to understand the coordinate frame and robot base positions. The starting end-effector positions are (-0.3, -0.352, 0.922) m for the left arm and (0.3, -0.352, 0.922) m for the right arm. The baskets might be around y = 0.05 and the objects around y = -0.2, but those are tentative estimates that I need to derive more carefully.

I need to derive the grasp poses and orientations. The initial quaternion [0.707, 0, 0, 0.707] represents a +90° rotation about Z. Link6’s local +X maps to environment +Y, local +Y maps to environment -X, and local +Z maps to environment +Z. Thus, the fingers initially extend horizontally along environment +Y toward the baskets, and close along environment X. The initial wrist camera likely looks along local +X with a downward tilt. From its extrinsics, the left camera is at approximately x = -0.3 m, but I still need to determine its y coordinate from the transform. The wrist view appears to show the basket and objects, consistent with a camera pointing roughly forward and down. For a grasp, I need to rotate link6 so that local +X points along environment -Z, with an appropriate yaw. A possible top-down quaternion with local X downward and local Y horizontal is [0.5, -0.5, 0.5, 0.5], but I need to check the conventions and compute it, perhaps using SciPy. I also need to map head-camera pixels onto a tabletop plane. The tabletop might be at z ≈ 0.75 m, but I need to establish its height. The starting end-effector height is about 0.921 m, and the grippers appear near the objects in the image, with the basket bases resting on the table. The wrist camera, known end-effector pose, and projected finger tips may help. The fingers extend 0.1576 m along local +X, which initially corresponds to environment +Y. With the starting end-effector at (-0.3, -0.352, 0.922) m, the tip is at approximately y = -0.194 m and z = 0.922 m. I am uncertain about the corresponding image locations: the left gripper tip might be near pixel x = 97, or the two fingers might be near (95, 243) and (154, 245). I need to inspect this more carefully. The tabletop is likely at z = 0.75 m or 0.72 m. Tentative basket centers are (-0.3, 0, 0.8), (0, 0, 0.8), and (0.3, 0, 0.8) m. I can compare these estimates with projections from the head-camera extrinsics. With an assumed tabletop height of z = 0.75 m and a basket center at (-0.3, 0.05, 0.78) m, the optical depth calculation is 0.5 × 0.05 - 0.866 × 0.78 + 1.33776 = 0.687 m. This gives pixel x = 194; the optical vertical coordinate is -0.866 × 0.05 - 0.5 × 0.78 + 0.29893 = -0.1344 m, giving v = 183.6. The observed basket centers appear near image y = 177. An alternative estimate of y = 0.10 m and z = 0.79 m gives optical depth 0.729 m, pixel x perhaps 195, and v = 175, which looks plausible. For the objects, the green pepper appears near head-camera pixel (128, 271). I can intersect its camera ray with an assumed plane at z = 0.75 m to estimate its position. I’ll use Python to calculate the planar mappings at candidate heights, including z = 0.75 m and 0.74 m.

The tabletop is likely at z = 0.75 m, with the outer baskets centered around x = ±0.32 m and y = 0.10 m, though these estimates are uncertain. The green pepper’s estimated x = -0.40 m seems reachable by the left arm, whose starting x is -0.3 m. The white wooden toy’s estimated x = 0.455 m looks plausible for the right arm. However, the white basket appears centered at pixel x = 320 in the initial left wrist image, suggesting an environment x of -0.3 m. Its head-camera center near pixel x = 192 maps to x = -0.328 m if z = 0.75 m. Its actual x could be -0.32 m, with the right basket at x = 0.32 m. The tabletop might instead be at z = 0.78 m. I’ll use the known end-effector pose and visible wrist-image projections to refine the object depth estimates. I can obtain the initial left wrist camera position by inverting its extrinsic transform. Its x coordinate may be about -0.299633 m; a tentative full position is approximately (-0.29963, -0.211, 0.829) m, but I need to calculate it.

The wrist camera is offset from the end effector by approximately +0.085 m in environment Y and +0.051 m in Z. Its viewing direction is [0, 0.866, -0.5] in the environment frame, pointing forward along +Y and downward by 30°. The fingers extend along +Y at z ≈ 0.922 m and appear at the sides near the bottom of the image. For a top-down grasp, I need to rotate link6 so that its local +X points downward. The wrist camera will rotate with it; will it then look more downward? I need to calculate the quaternion. I could set local X to (0, 0, -1), local Y to either (1, 0, 0) or (-1, 0, 0), and choose local Z accordingly. Initially, local X maps to (0, 1, 0), local Y to (-1, 0, 0), and local Z to (0, 0, 1). I considered pitching about local Y, but a rotation about environment X gives the mapping I need: +90° maps +Y to +Z, while -90° maps +Y to -Z. The top-down rotation should therefore be Rx(-90°) × Rz(90°). This maps local X to -Z and local Y to -X. Since Rx(-90°) maps +Z to +Y, the resulting rotation matrix has columns [-Z, -X, +Y]. The cross product (-Z) × (-X) = Z × X = Y is consistent with that choice. The quaternion in wxyz order may be [0.5, -0.5, 0.5, 0.5]; I’ll check it with SciPy.

The top-down quaternion (0.5, -0.5, 0.5, 0.5) maps local Y to environment -X, so the gripper closes along environment X. Initially, the fingers extend forward along environment Y. For the small chocolate bars, I could grasp across their short dimension, with local Y aligned across the width. Most bars appear diagonal at roughly 45° in the image, so I could adjust the top-down orientation’s yaw to match them. Should I grasp the peppers across a narrower part of the body or around the stem? The green and yellow bell peppers appear to be about 5 cm in size. The gripper’s maximum opening might be 0.08, but that is only an assumption. A downward grasp around the stem or upper body might work, using downA to close along environment X or rotating it to align with the pepper. The wooden toys have irregular shapes. Does the brown one resemble an upright animal, and is the white one lying flat? I need enlarged crops to inspect them. The original image may only be 640 pixels wide, but I can crop and upscale it for viewing. Python image processing is suitable for generating these artifacts without apply_patch. I’ll create an enlarged contact sheet of the initial objects.

I’ve created an enlarged contact sheet of the initial objects. I’ll inspect it to clarify their shapes, especially the wooden toys, and choose suitable grasp points and finger alignment.

The brown wooden toy may be a standing animal figurine with four legs. It looks somewhat like a standing dog, with an estimated vertical height of 0.05. The white wooden toy may have a rectangular base with a small figurine on it. I need to place both in their assigned basket. This appears to be a standard tabletop sorting task, with object coordinates likely randomized. I need to plan the reaches, and I can control both arms in parallel. To determine the tabletop’s z coordinate and the objects’ world positions more accurately, I can combine the initial head-camera and wrist-camera views. Using corresponding pixels and the known camera calibrations, I can triangulate visible points with projection matrices without assuming a tabletop height. In the left wrist image, the green pepper appears partly at the bottom near pixel (150, 470), the Snickers bar near (425, 440), and the brown toy near (550, 390). In the right wrist image, the red bar appears near (410, 445) and the white toy near (550, 420). I still need to confirm these correspondences by identifying the same points in the head and wrist images. I am uncertain whether the middle bar is visible in either wrist view. It seems to be beyond the left wrist camera’s field of view to the right; the right wrist view may show the blue basket at its left edge but not the bar. I could use the tabletop plane to estimate the middle bar’s position. The green pepper is at the bottom of the left wrist view, and the yellow pepper may be outside the field of view below it. I could move a wrist camera for a better view, but first I can use the initial stereo views to triangulate the visible key points. I’ll create enlarged wrist images with coordinate grids, then inspect them to identify pixel correspondences more precisely.

I’ll inspect the enlarged left wrist image with its coordinate grid to identify points that correspond to the head-camera view. This should help refine the left-side object position estimates through triangulation.

The left wrist view helps: the left basket’s front is near image y = 310 pixels, and its opening spans roughly y = 160–235 pixels. The brown toy is partly occluded by the right finger, but its legs are visible. I need to consider whether the initial grippers are close to the objects. In the head view, the green pepper appears near the left fingers without touching them. I should lift and rotate during the approach. I could begin by grasping the green pepper with the left arm and the white wooden toy with the right arm, since they are on opposite outer sides. Another option is the left Snickers bar and the right red bar, but transporting both to the middle basket could make the arms cross near the center; those placements could be sequential. The 1100-step budget is ample, corresponding to about 44 seconds of simulation, although many actions will be needed. Each robot_act permits up to 15 steps, with a target distance limit of 0.25 m and an orientation-distance limit of 1 rad. The top-down orientation is 1.57 rad from the initial orientation, so I need an intermediate rotation and a two-action approach. The starting end-effector positions are approximately x = ±0.3 m, y = -0.352 m, z = 0.922 m. A pose above the green pepper at (-0.40, -0.17, 1.0) m is about 0.24 m away, but its rotation still needs two stages. A pose above the white toy at (0.45, -0.1, 1.0) m is about 0.31 m away, exceeding the 0.25 m limit and requiring an intermediate position. Perhaps I should initially choose the green pepper and the right red bar, whose estimated horizontal position is (0.31, -0.15) m; both approach targets would be within 0.25 m. The green pepper’s body is roughly round, so several horizontal closing directions may work. The right red bar runs from approximately (450, 280) to (482, 243) pixels in the head image, with its long axis pointing up and right. For a tabletop object, image up corresponds to environment +Y, so its long world direction may have positive X and positive Y components, at roughly 45°. I should rotate the top-down gripper so local Y closes perpendicular to that long axis, across the bar’s width. I still need to determine the precise direction and calculate the yaw quaternion. Using downA for every object would simplify control because it closes along environment X. A diagonal bar’s width has an X component, which might suffice, but the fingers could instead contact along its long axis. I should align the fingers properly. For a general top-down orientation, local X points down and local Y is the horizontal unit closing direction c = (cx, cy, 0). Local Z is then (0, 0, -1) × c = (cy, -cx, 0), giving the rotation matrix [[0, cx, cy], [0, cy, -cx], [-1, 0, 0]]. I can compute the quaternion for the chosen yaw. For the round green pepper, closing along environment X or Y seems reasonable; downA uses c = -X. The right red bar’s world long axis may point toward positive X and Y. The left bar’s head-image endpoints are approximately (178, 274) and (220, 244) pixels, giving an image X difference of 42 pixels and an estimated world Y difference of about +0.1 m. I could invert these endpoints at z = 0.75 m to estimate its long-axis vector and orientation. The wrist views after reaching a top-down pose may provide a better view of the geometry. I considered approaching with the initial orientation and rotating over the object, but rotating near the objects could knock them. It is better to lift to z = 1.05 m, rotate, and then translate. Both grippers start at z = 0.922 m with the fingers extending horizontally forward at the same height. The object tops are likely around z = 0.78–0.83 m, leaving roughly 0.09 m clearance. Rotating in place could sweep the tips downward. At end-effector y = -0.352 m, the tips initially reach y ≈ -0.194 m, close to the green pepper at y ≈ -0.17 m. A full downward rotation at the initial height would put the tips at z ≈ 0.764 m behind the objects, leaving only 0.014 m above a table at z = 0.75 m. That may be possible, but it is too close. I should instead lift about 0.13 m to z = 1.05 m while rotating halfway, then complete the downward rotation. For the halfway quaternion, a -45° rotation about X maps local +Y to (0, 0.707, -0.707). The fingers extend about 0.111 m forward and downward, placing their tips at y ≈ -0.241 m and z ≈ 0.939 m when the end effector is at z = 1.05 m. That appears safe. Fully downward, the tips would be at y = -0.352 m and z ≈ 0.892 m, also clear. I can move in X and Y concurrently toward poses above the objects. Before choosing the exact targets, I need to triangulate the object positions using matching points in the camera views. I’ll inspect the right wrist image with its coordinate grid next.

The right bar is mostly beyond the bottom of the wrist image, while the white toy is visible. Starting with the white toy may be easier than starting with the occluded bar. Its position should be around x = 0.45 m, y = -0.1 m. I could approach it from above with the right arm, while the left arm approaches the green pepper, perhaps at x = -0.4 m, y = -0.17 m. I need to account for the approach distances and rotation. I could triangulate the brown and white toys using the head and wrist views, although matching their centers is difficult. The brown toy’s head-camera center may be at pixel (238, 237), but is that the top of its body? In the wrist view, it may be near (545, 385), mostly occluded. Its legs span approximately x = 528–575, y = 340–450 pixels, while its body appears behind the finger at x > 520, y < 350 pixels. The white toy’s body appears near (525, 251) in the head view and perhaps (540, 409) in the wrist view. Approximate triangulation could estimate its z coordinate. The green pepper’s head-camera center is near (128, 272), and its visible top is near (170, 467) in the wrist view, but it is truncated. Another option is to use basket corners to estimate the table height. The symmetric basket centers are likely at x = ±0.32 m. The white basket’s front bottom appears around head-camera pixel (192, 207), but I am unsure of the corresponding front-face y coordinate. In the wrist view, its front bottom is around (350, 309); could its x coordinate be approximately 0? These correspondences are difficult. I’ll try stereo triangulation using recognizable features on the white toy. A small black or dark tip appears at the upper right near head-camera pixel (533, 238), while a white figurine tip appears near wrist pixel (535, 365). I need to establish whether these are the same feature. Another estimate puts the pointed white wrist-view tip at (536, 364). The toy might be a white wooden horse on a rectangular base. Its base looks diagonal in the head view, with a small dark gray feature, possibly a mane, at the upper right. In the wrist image, the tall pointed white head is near (535, 365), the body center near (543, 404), and the base near (525, 441). The head-camera tip may instead be at the dark-and-white border near (532, 236). I could use (532, 237) and (536, 364) as an approximate correspondence. For the red bar, the gold icon may correspond between head-camera pixel (478, 249) and wrist pixel (403, 450). Its upper-right portion is partly under a finger in the head view, so the gold feature is uncertain there. The text is near (464, 267), and the wrist-view gold feature appears near (402, 450). The left Snickers bar’s gold feature appears near (211, 248) in the head view and (444, 422) in the wrist view. The green pepper’s stem appears near (129, 270) in the head view and perhaps (170, 477) in the truncated wrist view. I’ll code the triangulation and residual checks using these tentative correspondences.

The green pepper’s center triangulated to z = 0.8313 m, which seems too high compared with my estimate that its top is around z = 0.80 m. The pixel correspondence may be wrong; perhaps the wrist-view center is not at x = 170 pixels. Only the top of the pepper appears visible in the initial wrist view, around x = 120–210 and y = 459–480 pixels. Is its stem visible at all? The head-camera center may be near (128, 272) pixels. I’ll project positions along its camera ray into the wrist view at several assumed heights, including z = 0.75 m, to check the expected pixel coordinates. The earlier plane-based position (-0.403, -0.168, 0.75) m might project to approximately (154, 560) pixels in the wrist image, but I need to calculate this. I’ll compare the projections across different z values.

I’ll start with the green pepper and white wooden toy on opposite sides, which are clear of the baskets. I’ll raise both open grippers and move toward positions above these objects while using the intermediate rotation toward a top-down grasp, leaving clearance for the fingers as they turn.

After 12 steps, the arms have moved only about 0.05 m rather than reaching the targets, which requested roughly 0.2 m of travel. The left arm’s observed displacement is approximately (-0.014, 0.036, 0.034) m, with about 0.32 rad of rotation. The remaining distance to its intermediate target is about 0.164 m, and the remaining rotation to the halfway orientation is about 0.46 rad, within the 0.25 m and 1 rad command limits. A direct command to the final top-down orientation would require roughly 1.25 rad from the current orientation, exceeding the rotation limit, so I should continue toward the halfway pose. The slow progress may be due to the small local IK increments and the coordinated 0.05 rad joint-increment bound. I am still unsure why 12 steps produced so little motion. With six joints, I was considering a maximum of 0.3 rad per step, but the actual motion may depend on the damped least-squares solve, target interpolation, and the 0.04 s control interval. The apparent end-effector speed might be around 0.003 m per step, or perhaps 0.004 m per step with interpolation. The left arm moved about 0.052 m in 12 steps, and moving 0.2 m might require about 45 steps. I’ll repeat the same target using obs_000012 for 15 steps, the maximum per navigation call. Reaching the intermediate pose might take 30 steps, but I can inspect progress after this call. The original budget is 1100 steps; seven objects at perhaps 100 steps each would take about 700 steps, or roughly 800 steps with parallel work, so the budget still seems sufficient. I considered choosing an intermediate orientation closer to the final one to save time, but I’ll retain the planned halfway orientation and positions. The left arm currently has quaternion [0.697, -0.117, 0.115, 0.698], about 0.324 rad from its starting orientation. Another 15 steps would bring the total to 27; I tentatively expect its position to be near (-0.32, -0.27, 0.99) m and its orientation near halfway, after which I could command the final top-down orientation. For this action, I’ll keep both grippers open and continue the high, unobstructed approach toward the left target (-0.37, -0.2, 1.05) m and the right target (0.39, -0.16, 1.05) m, using the same halfway quaternion for both arms.

Both arms are now close to the halfway-orientation targets. In the left wrist view, the green pepper is truncated at the bottom near pixel (315, 480), the bar is near (490, 390), and the top of the white basket is truncated. In the right wrist view, the white toy is near (460, 350) and the right bar near (240, 410). I should complete the downward orientation and perhaps adjust the horizontal positions. The measured left end-effector position is (-0.355, -0.229, 1.023) m. A possible target above the green pepper is (-0.38, -0.18, 1.04) m. The right end effector is at (0.357, -0.224, 1.004) m, and a possible target above the white toy is (0.42, -0.13, 1.04) m. With the downA quaternion, the remaining rotation is about 0.785 rad; the positional distances to these proposed targets are about 0.063 m for the left arm and 0.118 m for the right. Perhaps 15 steps would reach them. I still need to refine the green pepper’s world position. Its apparent head-camera location has changed slightly: I previously estimated (128, 273), or (127, 271), and now estimate (135, 275), or a center near (135, 274). Since the head camera is fixed, could the gripper have bumped the pepper slightly to the right? It was mostly occluded after 12 steps. The current left gripper is at (-0.355, -0.229, 1.023) m with the fingers partly downward, while the pepper might be around (-0.37, -0.17, 0.8) m, so contact and pushing are possible. However, in obs_000027 the black gripper is near pixel (115, 215), separated from the pepper near (135, 275). The apparent change from my earlier estimate of (128, 272) may simply reflect imprecise visual estimates; perhaps its original center was actually around (130, 275). I have not established that it moved. I can map the current head-camera center, approximately (134, 274), to a plane at z = 0.80 m. The earlier point (128, 271) mapped to approximately x = -0.368 m, y = -0.185 m at that height. The new point might give x around -0.357 m or -0.35 m, but I should calculate it. The white toy remains near head-camera pixel (525, 246), and the brown toy appears unchanged. I’ll use the current head and wrist views to triangulate the visible green pepper and white toy features. The pepper’s visible top is approximately at left-wrist pixel (315, 460), while its center is truncated below the image. Completing the top-down orientation might bring it nearer the image center, but I need to understand the camera offset before treating image centering as grasp alignment. From the initial pose, the wrist camera center is approximately the end-effector position plus (0, 0.085, 0.051) m. Its initial environment-to-optical rotation has rows [[1, 0, 0], [0, -0.5, -0.866], [0, 0.866, -0.5]]. The camera transform is fixed in link6’s local frame. I estimate its local offset as R0 transpose times (0, 0.08484, 0.05094), giving (0.05094, -0.08484, 0) m, roughly local x = 0.051 m, y = -0.085 m, z = 0. Under downA, rotating this offset gives local X times 0.05094 plus local Y times -0.08484: (0, 0, -0.05094) + (0.08484, 0, 0) = (0.08484, 0, -0.05094) m. Thus, I estimate that the camera sits about 0.085 m along environment +X and 0.051 m below the end effector in the top-down pose. The initial optical +Z viewing direction is (0, 0.866, -0.5) in environment coordinates. I briefly considered whether its local components were (0.866, 0, 0.5), but taking dot products with the initial local axes gives (0.866, 0, -0.5). Under downA, that becomes (0, -0.5, -0.866), so the camera looks downward and toward environment -Y. A point directly beneath the finger tip, at the end-effector x and y and z minus 0.1576 m, would lie to the camera’s left because of the estimated +X camera offset. The initial optical X axis is environment +X, or local (0, -1, 0), which downA maps to environment +X. The object directly beneath the gripper is therefore about 0.085 m left of the camera. The initial optical Y axis is (0, -0.5, -0.866) in environment coordinates, or (-0.5, 0, -0.866) locally. Under downA, it becomes (0, -0.866, 0.5). A point below the camera has a negative Z displacement and therefore a negative optical Y component, putting it above the image center. By this reasoning, a point under the gripper appears left and above the wrist-image center. I should use calibration and finger geometry rather than simply center the object in the image. Projecting the desired grasp point and finger tips could guide alignment. I could calculate the fixed camera offset more precisely from the initial observation and predict the top-down projection of the estimated pepper position. Alternatively, I could derive a tabletop plane from head and wrist correspondences. The easiest approach may be to complete the top-down orientation above the estimated objects, then use wrist-image object centers, calibration, and an estimated height to localize them. I can do that after the final rotation. I am also considering a revised downA target of (-0.36, -0.17, 1.03) m for the left arm, while retaining (0.42, -0.13, 1.04) m for the right. Why use x = -0.36 m rather than -0.38 m? If the pepper’s top is at z = 0.82 m, its head-camera position may imply x around -0.35 m; the point (134, 274) may give x = -0.342 m at that height. Its actual x might be around -0.36 m. Initially, the left wrist camera was near x = -0.3 m and the visible pepper was near wrist x = 170 pixels. Now the camera may be near x = -0.35 m and the visible pepper top near wrist x = 315 pixels. These estimates need triangulation before I settle on a target. The current pepper stem may be near left-wrist pixel (315, 477) and head-camera pixel (135, 271). The white toy’s body may be near head-camera pixel (526, 252) and right-wrist pixel (461, 350). I’ll first calculate approximate triangulations from the current observation using candidate pepper, toy, and bar feature correspondences, and obtain both current wrist-camera centers from their extrinsics.

The green pepper’s triangulated top is at z ≈ 0.795 m and its center at z ≈ 0.793 m, which seem consistent. The tabletop might be at z ≈ 0.74 m, with a pepper height of about 0.055 m. The estimated center is (-0.357, -0.19, 0.793) m, although I am unsure whether that point is actually near the top. I guessed the wrist-image correspondence near the bottom of the image, so it remains approximate. The white toy’s triangulated body, base, and head heights are about 0.781 m, 0.765 m, and 0.801 m respectively. Is its head really only at z = 0.801 m? It may be a fairly flat toy, about 0.04 m tall, on a tabletop at z ≈ 0.75 m. These results refine the horizontal estimates to (-0.357, -0.1905) m for the green pepper’s center and (0.4243, -0.1293) m for the white toy’s body. The Snickers gold feature triangulated to z = 0.7432 m, which seems improbably below the table. The correspondences may be wrong, or the tabletop could instead be at z ≈ 0.73 m with the bar’s top at z ≈ 0.743 m. The white base estimate of z = 0.7648 m, approximately 0.765 m, is plausible with a table at z = 0.75 m. The green pepper’s bottom height is unknown. The earlier brown-foot estimate of z = 0.7666 m might also fit a table at z = 0.75 m. I would expect the Snickers gold feature to be around z = 0.755 m; a triangulation error of about 0.012 m could plausibly come from mismatched pixels. I’ll use x = -0.357 m and y = -0.19 m as the green pepper’s target horizontal position. For the white toy, a possible body grasp is at x = 0.424 m, y = -0.129 m, with contact at z ≈ 0.78 m. Its rectangular base appears to be about 0.09 × 0.06 m, with a figure on top that may be a horse. Should I grip the base or the figure? I favor grasping around the central figure or body, closing across its narrower dimension. The white base runs diagonally from approximately head-camera pixel (508, 267) to (540, 234). Its long axis might point toward +Y in the world frame, but I need to establish that. In the obs_000027 wrist view, the base appears to run from the lower-left point (390, 360) to the upper-right point (485, 280), with the figure’s long axis perhaps aligned with the base. The body is near pixel (450, 348). To grasp across the short axis, I should set the quaternion’s yaw so the closing direction is perpendicular to the long axis. The planned downA orientation closes along environment -X. If the base’s long axis points diagonally toward +X and +Y, closing along -X would only partly align across its width. I could rotate 45° about Z to improve alignment. I should estimate the base’s world orientation from its head-camera corners using a plane at z = 0.755 m. I am unsure whether its lower-left corner is near pixel (509, 260), or whether the original base polygon includes a point near (508, 250). The white toy appears unchanged in the obs_000027 head view. I’ll create enlarged head-camera crops with coordinate grids every 5 pixels, then inspect them to clarify the corners and grasp geometry.

I’ll inspect the enlarged head-camera crop of the white wooden toy to clarify its base corners and long-axis direction. This should help me choose a grasp point and align the fingers across its narrower dimension.

The white wooden toy may be a bird on a base. The base’s long direction runs from approximately image pixel (520, 263) at the bottom to (529, 235) at the top, mostly upward with a small X component. Its world long axis therefore appears nearly aligned with +Y, with its short axis along X. The base spans about 25 pixels horizontally and 30 pixels vertically in the head view; its world long-axis vector may have components x = 0.02 m and y = 0.09 m. Closing along environment X with the top-down downA orientation seems appropriate for gripping the central body. The white figure appears to have a black beak near pixel (536, 236) and a body near (525, 246). A possible body grasp center is pixel (525, 248), corresponding approximately to world x = 0.424 m and y = -0.129 m from the triangulation. The green pepper’s top is round, so downA also seems suitable for it. I’ll command downA with the left end effector at (-0.357, -0.19, 1.03) m and the right at (0.424, -0.129, 1.03) m, keeping both grippers open for 15 steps. I estimate the remaining positional distances as 0.045 m for the left arm and 0.122 m for the right, with about 0.785 rad of rotation remaining. The arms may not fully reach the target positions in this call, but they will likely reach the intended orientation.

The objects are now clearly visible in the wrist views. Neither gripper is fully oriented downward yet; I estimate about 0.19 rad of rotation remaining for the left arm and 0.26 rad for the right. Their positions are close to the targets. The green pepper appears large in the left wrist image, with its center near pixel (320, 260). The white toy’s base appears centered near pixel (350, 250) in the right wrist image. I can use the current calibration and corresponding points in the head and wrist views to triangulate the grasp centers. For the green pepper, I’ll use head-camera pixel (134, 275) and left-wrist pixel (319, 260) to estimate its 3D center. For the white toy’s body, I am considering head-camera pixel (525, 247) and right-wrist pixel (330, 263), though I am uncertain about that correspondence. I’ll calculate the triangulated positions.

The green pepper’s estimated center is at x = -0.357 m, y = -0.193 m, with its stem top at z ≈ 0.808 m and body center at z ≈ 0.797 m. The left end effector is at (-0.357, -0.191, 1.029) m, almost perfectly aligned horizontally. With the desired top-down orientation at this height, the finger tips would be at z ≈ 0.871 m, about 0.06 m above the pepper at z ≈ 0.81 m. An eventual end-effector height around 0.93 m would put the tips at z ≈ 0.772 m, allowing contact around z = 0.79 m. The right end effector is at (0.414, -0.143, 1.022) m, while the estimated white toy body is at x = 0.420 m, y = -0.130 m. I should adjust the right arm by +0.006 m in X and +0.013 m in Y. The full top-down orientation closes along environment -X. The toy’s body may be about 0.05 m wide, and I estimate the open gripper width at about 0.09 m. An end-effector height of 0.945 m would put the tips at z ≈ 0.787 m, near the body center at z ≈ 0.789 m and above the base top at z ≈ 0.777 m. With the pads extending upward about 0.05 m, this may allow contact across the body around z = 0.79 m. I could also use a height of 0.94 m for the toy and 0.93 m for the pepper. Neither gripper has fully reached the downward orientation. For the quaternion [0.541, -0.455, 0.456, 0.54], I roughly estimate a tilt of 17° from downward and a downward finger-direction component of about 0.97. At an end-effector height of about 1.02 m, the tips would be at approximately 1.02 - 0.153 = 0.867 m, still above the objects. I could rotate fully downward and descend in one action to (-0.357, -0.193, 0.94) m on the left and (0.420, -0.130, 0.95) m on the right. The rotation would be less than 0.3 rad, and the positional distances would be about 0.089 m and 0.073 m, within the command limits. However, I should first approach a higher pre-grasp pose with the horizontal alignment and full downward orientation. I considered left and right heights of 0.97 m and 0.975 m. At those heights, the left tips would be at z ≈ 0.812 m, just above the pepper’s stem at 0.808 m, and the right tips at z ≈ 0.817 m, above the toy at about 0.80 m. I considered 6–8 steps; at an estimated movement of 0.005 m per step, a 0.06 m descent might need 12 steps, while 8 steps might bring the arms close to these targets. But this is the final approach near contact, where the instructions require 1–3 steps throughout grasping. I’ll use 3 steps, inspect the partial descent and rotation, and continue as needed. After 3 steps, the height might still be around 1.01 m with the orientation nearly downward. Both objects are visible, I see no collision, and 1058 steps remain, so there is no need to rush. The downA orientation closes along environment -X, which suits the white toy’s narrow body because its base’s long axis appears mostly aligned with +Y. It also suits the round green pepper. For this immediate action, I’ll keep both grippers open, use the exact top-down quaternion, and target (-0.357, -0.193, 0.975) m on the left and (0.420, -0.130, 0.98) m on the right for 3 steps.

Both grippers are now nearly fully downward. The left end effector is at z = 0.982 m, with an estimated finger-tip height of 0.824 m. The pepper’s top is at about 0.808 m, leaving 1.6 cm of clearance. The right end effector is at z = 0.983 m, with its tips at about 0.825 m. The toy’s head may be at z = 0.80 m, leaving about 2.5 cm of clearance. I could lower the left end effector to z = 0.94 m, putting the tips at about 0.782 m to contact the pepper’s body sides around z = 0.79 m. For the right arm, a height of 0.945 m would put the tips at about 0.787 m. I’ll use 3 steps with target heights of 0.935 m on the left and 0.94 m on the right. I expect an actual descent of about 0.04 m, bringing the measured heights to roughly 0.942 m and 0.945 m, respectively. I should keep the horizontal alignment stable. The right arm is currently at (0.419, -0.132) m, close to the tentative toy-body target of (0.42, -0.13) m. The left arm is already exactly at the green pepper’s target horizontal position. I’ll keep both grippers open for this short descent.

The left end effector is at z = 0.949 m, with an estimated finger-tip height of 0.791 m, near the green pepper’s body center at z ≈ 0.797 m. Do the open fingers surround the pepper? In the wrist view, the pepper spans x = 183–446 pixels, a width of 263 pixels, while the fingers occupy x = 0–125 pixels and x = 515 pixels onward. The gap looks large in the image, but I estimate the physical opening at about 0.085 m and the pepper’s width at perhaps 0.055 m. Closing seems appropriate. The right end effector is at z = 0.943 m, with an estimated tip height of 0.785 m, near the white toy’s body center at z ≈ 0.789 m. Are the fingers around its central body? The toy’s center may be near wrist-image pixel (350, 270), with the fingers again at the left edge around x = 0–125 pixels and the right around x = 515 pixels. Both objects may be between the pads. The head view also appears to show the left gripper at the green pepper and the right at the white toy. I’ll close both grippers while holding their current poses. I initially considered 2 steps, but that might leave the opening command only partly interpolated. I’ll use 3 steps for closure, within the instructed 1–3 steps.

After 3 closure steps, the left and right opening commands are 0.42 and 0.338, so they have not yet reached the fully closed command. The left gripper’s fingers appear to contact the green pepper’s sides around image x = 190 and 450 pixels, although there may still be gaps. The right gripper’s left finger is near pixel (230, 330), beside the toy’s base, and its right finger is near pixel (440, 270), beside the toy’s side. It appears to be gripping the toy’s body and base, but this is not yet certain. The opening commands are interpolated control values, not measured finger gaps. I estimate that reaching the closed command may take about 8 steps. Could the grasps already be secure enough for a test lift while closure continues? I would rather continue closing for another 3 steps while holding both poses unchanged, then perform the test lift.

The left opening command remains at 0.42, likely indicating contact with the pepper. The right opening command has decreased to 0.257. Has the white toy moved in the head-camera view? It now appears near pixel (524, 253) and may have shifted or rotated. In the wrist view, it appears closer and larger, with its base rotated vertically and the fingers at the sides of its body. The right gripper may be squeezing or slightly lifting the toy through contact, even though the measured end-effector pose is unchanged. I’ll perform a small test lift, considering a left end-effector height change from 0.949 m to 0.975 m (+0.026 m) and a right height change from 0.943 m to 0.969 m. I’ll use 2 control steps, which may produce about +0.026 m of actual lift, while maintaining both orientations and keeping the grippers commanded closed. Then I’ll check whether each object moves with its gripper.

Did the test lift succeed? In the head view, I initially thought the green pepper moved from pixel (130, 273) to (128, 278), but it now appears nearer (128, 276), beside the gripper and perhaps slightly raised. Its width in the wrist view stayed about 260 pixels from obs_000054 to obs_000056 while the camera rose 0.021 m. If the pepper were left on the table, I would expect it to appear smaller. Its unchanged scale suggests that it is likely held. The white toy’s orientation changed substantially in the wrist view between those observations, with its base now horizontal at the top. The grasp may have rotated it during the lift, but is it still securely held? It remains large and centered and appears to move with the camera. In the head view, it shifted from approximately pixel (524, 250) to (533, 251), with the right gripper near image x = 535 pixels. It looks lifted, perhaps with its base at z = 0.82 m. I should lift farther before transport to give the objects and fingers clearance above the basket rim, estimated at z = 0.84 m. With the top-down grasp, I estimate the held object’s height near the finger tip as z = end-effector z − 0.1576 m + approximately 0.02 m. At an end-effector height of 1.05 m, the object’s bottom would be around 0.88 m, above the rim. I could lift to 1.08 m for safety. From the current height of about 0.97 m, another 10 steps toward a target of 1.10 m might produce an actual rise of about 0.07 m. Alternatively, I could combine the lift with movement toward the baskets at z = 1.08 m. I need more precise basket-center estimates first. The white basket is around x = -0.28 m and perhaps y = 0.07 m; the red basket is around x = +0.28 m, y = 0.07 m. I previously estimated the front rim at y ≈ -0.02 m, z ≈ 0.83 m. With a possible front-to-back depth of 0.16 m, the center would be near y = 0.06 m. The head-view opening center appears near pixel (192, 170). Does it correspond to z = 0.84 m? Using pixel (191, 169) at that height, I tentatively estimate x = -0.279 m and y = 0.132 m, but I need to calculate this. Earlier, image y = 177 pixels at z = 0.75 m gave environment y = 0.098 m; at a rim height of 0.84 m, could it instead give y = 0.044 m? I’ll recompute the plane intersections, including the opening center at pixel (192, 169) with z = 0.83 m, to refine the placement coordinates.

At an assumed rim height of z = 0.83 m, the plane intersections give front y = -0.017 m, back y = 0.132 m, and center y = 0.0575 m. They give front x = -0.271 m and back x = -0.304 m, but those estimates used the same image coordinate u = 192 pixels. That is not exact for a basket whose physical center stays at x = -0.28 m: perspective changes its projected u coordinate with depth. Could both front and back centers really be at u = 192 pixels? I would instead expect perhaps u = 184 pixels at the back and u = 203 pixels at the front. I am unsure whether the apparent symmetry in the images helps resolve this. I’ll use an estimated white-basket center of (-0.28, 0.06, 0.83) m, which might project near head-camera pixel (197, 172). The baskets are likely centered at x = ±0.28 m, y = 0.06 m, with the blue basket at x = 0 m. The triangulated white-basket front corners had x coordinates of -0.405 m and -0.162 m, giving center x = -0.2835 m, with y ≈ -0.024 m. I could perhaps triangulate the back rim corners at head-camera pixels (145, 141) and (237, 141) using the wrist view. For now, the estimated basket width of 0.24 m and depth of 0.16 m support using x = -0.28 m for the white basket and x = 0.28 m for the red basket. Moving the left arm directly from (-0.357, -0.194, 0.97) m to (-0.28, 0.06, 1.08) m would require about 0.272 m, exceeding the 0.25 m command limit. I need an intermediate target, such as (-0.30, -0.02, 1.08) m, at an estimated distance of 0.199 m. The right arm’s direct move from (0.42, -0.131, 0.966) m to (0.28, 0.06, 1.08) m would be about 0.263 m, also slightly over the limit. An intermediate target of (0.32, -0.02, 1.08) m would be about 0.194 m away. I can raise both objects while moving toward positions near the basket fronts. The left object’s bottom may currently be around z = 0.79 m; a lift of 0.11 m would bring it to about 0.90 m, above the rim estimated at 0.84 m. The path toward +Y passes over the Snickers bar near (-0.25, -0.13) m, but an object height of about 0.9 m should provide clearance. At end-effector z = 1.08 m, the finger tips would be around z = 0.92 m, above the baskets. A 15-step call may produce only about 0.08 m of motion, perhaps reaching z = 1.04 m and y = -0.12 m rather than the targets, so I may need to repeat after inspecting the result. The right wrist view shows the white toy centered and lifted, which supports proceeding with transport, and the left pepper appears stable. I’ll command intermediate positions of (-0.30, -0.02, 1.09) m for the left arm and (0.32, -0.02, 1.09) m for the right arm for 15 steps, keeping both grippers closed and maintaining the downward quaternion [0.5, -0.5, 0.5, 0.5].

The IK precheck failed with a position error of about 5.5 mm at the target. Neither arm moved, and no control steps were spent. I should try a closer waypoint or a different orientation. One option is an intermediate position of (-0.33, -0.08, 1.06) m for the left arm and (0.36, -0.08, 1.06) m for the right. I estimate the travel distances as 0.137 m and 0.139 m, both within 0.15 m. These closer targets would likely pass, after which I could continue toward the baskets. I also considered a target height of z = 1.05 m with y = -0.06 m. I’ll instead use (-0.32, -0.06, 1.07) m for the left arm and (0.34, -0.06, 1.07) m for the right, estimating the travel distance at about 0.17 m. The earlier precheck may have stalled because of joint limits with the top-down orientation at a high position. The arms can reach their current poses, but the previous targets at y = -0.02 m and z = 1.09 m may have been too far away or near a singularity. A closer waypoint should help. I’ll use 12 steps, maintaining the top-down orientation and keeping both grippers closed.

Both objects are still held. In the head-camera view, the green pepper is now near the front left of the white basket, and the white toy is near the front of the red basket. The left end effector is at y = -0.114 m and z = 1.028 m; the right is at y = -0.075 m and z = 1.049 m. I’ll move above the basket centers, targeting (-0.28, 0.06, 1.08) m for the left arm and (0.28, 0.06, 1.07) m for the right. I estimate the travel distances as 0.177 m and 0.154 m, respectively. These targets may pass the IK precheck now that the arms are closer; the previous failure may have been due to the roughly 0.2 m move and the high target positions. I’ll use 15 steps while maintaining both grasps and orientations.

The precheck failed with a position error of about 65 mm. Perhaps the target at y = 0.06 m and z = 1.08 m is near the arm’s reach limit with the top-down orientation. The starting end-effector pose had y = -0.352 m and z = 0.921 m, with the arm base behind it, so reaching forward to y = +0.06 m at that height requires extension. Perhaps the forward reach is limited to around y = -0.02 m at z = 1.07 m. This remains a hypothesis rather than proof of unreachability. Could lowering the end-effector height to z = 1.0 m allow more forward reach over the basket? With the top-down orientation, link6 needs to be about 0.157 m above the basket. At z = 1.0 m, I roughly estimate the object bottom at z ≈ 0.84 m, which is borderline above the rim at z = 0.83 m. A placement height of z = 1.02 m, with y = 0.04 m, may be reachable. The earlier precheck error of about 5 mm for the target (-0.3, -0.02, 1.09) m also suggests that forward and upward motion may be near the reach limit. Lowering the height could help. I considered targets of (-0.28, 0.04, 1.0) m for the left arm and (0.28, 0.04, 1.0) m for the right. I initially estimated the left travel distance as 0.22 m, but with changes of +0.154 m in Y, -0.028 m in Z, and +0.053 m in X, my revised estimate is about 0.165 m. I estimate the right travel distance as 0.172 m. These targets should pass the precheck. Using the estimate 1.0 - 0.157 + approximately 0.015 m gives a finger or object-bottom height of about 0.858 m, leaving about 0.028 m above the rim at 0.83 m. Once over the centers, I could lower to z = 0.95 m for release if needed. For the immediate action, I’ll try (-0.28, 0.04, 1.01) m for the left arm and (0.28, 0.04, 1.01) m for the right, using 15 steps while maintaining the top-down orientation and keeping both grippers closed.

The precheck still fails with a position error of about 13 mm. Perhaps I need a smaller forward increment, first approaching the front rim at y = -0.01 m and z = 1.01 m, then moving toward the center. I am unsure whether the local precheck needs a sequence of closer targets; it can fail for a distant target even if that pose is reachable, so I’ll try intermediate poses about 0.08 m closer to the baskets. For the left arm, I’ll move from the current y = -0.114 m toward y = -0.03 m, a planned change of +0.084 m, with x = -0.29 m and z = 1.03 m. For the right arm, I’ll move from y = -0.075 m toward y = 0 m, a planned change of +0.075 m, with x = 0.29 m and z = 1.03 m. These closer targets should pass, after which I can try y = 0.04 m. I’ll command the left target (-0.29, -0.03, 1.03) m and the right target (0.29, 0, 1.03) m for 12 steps, maintaining both grasps and orientations. I estimate the left object’s bottom will be around z = 0.88 m, which should clear the front rim during the crossing; the same should hold for the right object.

The green pepper appears near the front left of the white basket’s opening at head-camera pixel (170, 184), and the white toy appears within the red basket’s opening at pixel (466, 181). However, their height may make them look farther inside than they actually are. The left end effector is at y = -0.031 m, and the pepper’s center may be near y = -0.03 m. With the basket front estimated at y = -0.02 m and its center at y = 0.06 m, is the pepper still just outside or above the front rim? The top-down fingers are at the end effector’s y coordinate, but I am uncertain about the held object’s offset from the gripper. The right end effector is at y = -0.002 m, placing the toy near the front of the red basket. If the front rim is at y = -0.02 m and the toy extends approximately ±0.04 m around its center, it may still be partly over the front wall. I should move both objects farther inside before releasing them, toward y = 0.03–0.05 m. I’m considering another roughly 0.04 m movement along +Y. The earlier target at y = 0.04 m failed from farther away; perhaps it will pass the IK precheck now that the arms are closer. I’ll target (-0.28, 0.045, 1.01) m for the left arm and (0.28, 0.045, 1.01) m for the right, maintaining their orientations and closed grippers. The planned travel is about 0.08 m, with a descent of 0.019 m and forward movements of 0.076 m on the left and 0.047 m on the right, within the command limits. I expect the IK check is likely to pass. I considered 10 steps, but I’ll use 8 because the objects are near the baskets. At an end-effector height of 1.01 m, I estimate the object bottoms at z = 0.86 m, which should leave clearance above the rims at z = 0.83 m.

Both arms again have the same precheck position error, about 17.6 mm. Is y = 0.045 m difficult to reach with the top-down orientation? Perhaps joint constraints limit the arms when extended forward to y = 0.045 m at an end-effector height of z = 1.01 m. Tilting the grippers forward might allow farther reach. Could I release the objects at their current positions if they are already inside the baskets? I need to verify their actual positions relative to the baskets before deciding. Another possible waypoint is y = 0.02 m, z = 1.03 m, without lowering. The earlier target at y = 0.04 m failed from the left arm’s position at y = -0.114 m, which may have been too far away. Now the target at y = 0.045 m fails with about 17 mm of position error even from closer poses; perhaps the target at z = 1.01 m is near a singularity. I’ll inspect the current joint values in the observation’s current_state to better understand the constraint.

Are the joints near their limits? The left arm’s joint values are q2 = 2.18 rad, q3 = 2.13 rad, and q4 = -1.52 rad. The right arm has q2 = 2.37 rad and q3 = 2.445 rad, perhaps near a maximum of 2.5 rad. Reaching forward with a top-down orientation may bring q3 near its limit. Tilting the grippers could reduce the required q3 rotation and help reach the baskets. The task has no placement orientation requirement. I could tilt the fingers forward so that local +X has an environment +Y component while still pointing downward along -Z. Starting from downA, a positive rotation about environment X gives Rx(θ) × (0, 0, -1) = (0, sinθ, -cosθ). This would extend the object into the basket while keeping the end effector closer. I estimate the object center would be ahead of the end effector by 0.157 sinθ m. With end-effector y = -0.03 m and θ = 30°, the object would be at y ≈ +0.049 m. The finger-tip height would be end-effector z − 0.157 cosθ m; at end-effector z = 1.03 m, the tip would be at z ≈ 0.894 m, above the rim. A forward tilt of 30–45° could therefore move the objects over the openings without moving the end effectors to the basket centers, and might also improve IK feasibility. One option is Rx(30°) × R_down, premultiplying by the environment-frame rotation. The downA quaternion is [0.5, -0.5, 0.5, 0.5] in wxyz order. A 30° change has a rotation magnitude of 0.524 rad, within the 1.0 rad command limit. Possible target positions are (-0.29, -0.03, 1.04) m for the left arm and (0.29, 0, 1.04) m for the right, with both grippers tilted +30° about environment X. Would the objects swing forward and upward? In the downward pose, I estimate the object center is about 0.02 m above the finger tip, or roughly 0.15 m below the end effector. A 30° forward tilt rotates the relative vector (0, 0, -0.15) m to approximately (0, 0.075, -0.13) m, moving the object +0.075 m in Y and +0.02 m in Z with the end effector unchanged. The objects are currently at the front edges, so swinging them forward and upward seems safe, though I should consider clearance between the fingers and the front rims. Another option is a 40° tilt, giving approximately +0.096 m of forward extension. That would put the object centers near y = 0.065 m on the left and y = 0.094 m on the right, inside the baskets. I could then release while tilted so the objects drop into the containers. The white toy may have rotated within the right grasp, so its relative offset remains uncertain, but this approach still seems suitable. I’ll use SciPy to calculate the quaternion for Rx(35°) × R_down and compare the 25°, 35°, and 45° options before choosing the motion.

With the 35° forward tilt, local +X maps to Rx(35°) × (0, 0, -1) = (0, 0.574, -0.819), so the fingers will extend forward and downward. Both grippers are currently pointing straight down. I’ll hold their measured end-effector positions unchanged and command the 35° tilt for 8 steps, keeping both grippers closed. The requested rotation is about 0.61 rad. With a maximum rotational increment of 0.1 rad per step, 8 steps may be enough, although the actual rotation might only reach about 0.45 rad. I considered raising the end effectors slightly to z = 1.05 m for clearance during the swing. However, I estimate that the swing itself will raise the objects by about 0.02 m, so keeping the current height of approximately z = 1.03 m seems safe. Changing the wrist orientation may also make the IK precheck easier. Both targets are within the 0.25 m position and 1 rad orientation limits.

After 8 steps, have the grippers tilted only about 14°? The quaternion difference from the downward orientation may be about 0.28 rad, or 16°. Reaching the planned 35° tilt appears to need another 8 steps. In the head-camera view, the green pepper is at the front left of the white basket but appears above its interior. The right toy’s center may still be near the front rim. I’ll continue toward the same 35° orientation target for 8 steps, holding the current end-effector positions and keeping both grippers closed.

Both grippers are close to the planned 35° forward tilt; the left may be at about 31°. The wrist views show the objects over the basket interiors. In the head view, the green pepper appears near the back rim at pixel (174, 143), and the white toy is near (456, 143), but their height affects that projection. I can estimate the object positions from the end-effector orientations and their offsets along local +X. The left end effector is at (-0.29, -0.026, 1.032) m. At an estimated 31° tilt, local +X has a forward component of sin(31°) ≈ 0.515 and a downward component of about -0.857. If the grasp point is approximately 0.14 m along local +X from the end effector, its estimated position is y = -0.026 + 0.072 = 0.046 m and z = 1.032 - 0.12 = 0.912 m. Thus, the pepper’s center may be near y = 0.046 m, z = 0.91 m, over the basket center estimated at y = 0.06 m. A height of z = 0.91 m is also consistent with its head-camera vertical coordinate of about 143 pixels. Its bottom may be at z = 0.88 m, above the rim at about 0.84 m, with a drop of roughly 0.1 m to the basket base at 0.75 m. For the right toy, the estimated center is at y = 0.006 + 0.07 = 0.076 m, also inside its basket. I could release now at an object height of about 0.9 m, allowing a drop of about 0.1 m. However, lowering the end effectors to z = 1.0 m first would reduce the drop, and the tilted orientation may make that reach feasible. Keeping the same horizontal positions and orientation, the proposed height change is within 0.032 m. I also considered lowering toward z = 1.005 m for 3 steps; that could put the object bottoms near z = 0.85 m, just above the rims, with a release drop of about 0.08 m. I need to account for possible finger contact with the rims during descent. At the planned 35° tilt, the estimated finger-tip height is 1.032 - 0.1576 cos(35°) = 1.032 - 0.129 = 0.903 m, leaving 0.073 m above a rim at z = 0.83 m. The objects may extend below the tips. For the initial toy grasp, the end effector was at z = 0.943 m, the tip near 0.785 m, and the body center near 0.789 m, approximately the same height. The toy’s bottom may have been near 0.76 m, with a vertical offset from the end effector of about -0.18 m. After tilting, its bottom position also depends on the object’s height and orientation. I currently estimate the object bottoms near z = 0.88 m. Lowering by 0.03 m would put them near 0.85 m, leaving about 0.02 m of rim clearance. At an end-effector height of 1.00 m, the tips would be near 0.871 m and the object bottoms near 0.85 m. Releasing from the current height may already be safe. Is a 0.1 m drop acceptable for the pepper and toy? The wooden toy could tip, but it should remain contained. I prefer to lower slightly before opening. I’ll target z = 1.00 m for both arms for 3 steps, preserving their current horizontal positions, keeping both grippers closed, and using the full 35° target quaternion [0.62721138, -0.32650558, 0.32650558, 0.62721138]. The measured heights may only reach about 1.01 m during this call. The IK precheck may pass with the tilt despite the nearby joint limits. If it fails, I’ll release from the current positions.

I’ll release both objects by setting gripper_closed to false while holding both arms at their current poses. Three steps might only open the grippers partially; should I use 6? I estimate that the left opening command could increase from 0.416 toward 1 at about 0.194 per step. During closure, it went from 1 to 0.42 after 3 steps, then stayed at 0.42 against the pepper; the right command decreased to 0.257. Three opening steps should bring the commands approximately to 1, so I’ll use 3 steps.

The first two objects are placed, leaving five: the yellow pepper, the brown wooden toy, and three chocolate bars. I can retract the arms into clear space and next approach the yellow pepper with the left arm and the rightmost red chocolate bar with the right arm. My current head-camera estimates are the left bar at pixel (196, 262), the brown toy at (240, 239), the yellow pepper at (244, 286), the middle bar at (370, 251), and the right bar at approximately (473, 267) or (474, 267). The white toy is no longer on the table. I initially estimated the right bar near (470, 266), with world x perhaps 0.32 m. The yellow pepper may be around (-0.14, -0.21, 0.79) m. Could I triangulate them using the current wrist views? Those views currently show the baskets, so I should move the arms back toward the objects and rotate the grippers downward before refining the estimates. Both grippers are open and tilted forward by approximately 35°. The measured end-effector positions are (-0.29, -0.025, 1.014) m on the left and (0.29, 0.008, 1.019) m on the right. For the yellow pepper, I can intersect the head-camera ray through pixel (244, 286) with a plane at z = 0.79 m. Earlier estimates at z = 0.78 m gave x = -0.148 m and y = -0.206 m; at z = 0.80 m they gave x = -0.142 m and y = -0.214 m. At z = 0.79 m, I estimate x = -0.145 m and y = -0.210 m. The body center may be at pixel (244, 286), while the stem top may be near (245, 281) at z = 0.81 m, giving slightly different horizontal coordinates. A later wrist view should help refine these estimates. Moving the left arm horizontally from (-0.29, -0.025) m to (-0.145, -0.21) m would require about 0.235 m of travel. I considered a pre-grasp height of 1.0 m; including a height difference of about 0.014 m gives a total distance of roughly 0.236 m, within the 0.25 m limit. The rotation from the 35° tilt to straight down is about 0.61 rad, below the 1 rad limit. I could target a pose directly above the yellow pepper at (-0.145, -0.21, 1.02) m with the downward orientation for 15 steps. Would that path pass over the brown toy or left bar? At an end-effector height of 1.02 m, I estimate the downward finger tips at z = 0.86 m. With object tops at about 0.81 m, that leaves approximately 0.05 m of clearance. The placed green pepper is around z = 0.78 m. Do I need to lift before leaving the basket? At the current left end-effector height of 1.014 m, the tilted tips are around z = 0.88 m, about 0.05 m above the rim at z = 0.83 m. Rotating downward while withdrawing along negative Y would swing the tips backward and lower them from approximately z = 0.885 m to 0.856 m if the end-effector height stayed unchanged. That would still leave about 0.026 m above the rim, so this withdrawal and approach appear safe. For the right bar, projecting pixel (474, 267) onto a plane at z = 0.755 m may give x around 0.33 m, but I need to calculate it. I also need to align the gripper yaw across the diagonal bar’s width before approaching. Its approximate head-camera endpoints may be (453, 278) at the lower left and (491, 251) at the upper right. Is the upper end partly beneath the gripper? The current bar appears to span roughly x = 451–491 pixels. My earlier endpoint estimates were (451, 277) and (485, 249), giving a long-axis image difference of 34 pixels in X and -28 pixels in vertical position. I’ll map the endpoints onto the z = 0.755 m plane using the head-camera calibration, obtain the bar’s world long-axis vector, and choose a perpendicular closing direction. The left Snickers bar will likely need similar alignment later. The middle bar appears nearly vertical in the image with a slight diagonal. For the brown toy, downA, which closes along environment X, may work if its base’s long axis is along +Y. The yellow pepper is round, so that orientation should also be suitable. For the next calculation, I am considering right-bar endpoints (455, 275) and (483, 249) on the z = 0.755 m plane. I’ll calculate the current object projections and the right bar’s grasp orientation before issuing another robot motion.

The right bar’s estimated center is at x = 0.324 m, y = -0.156 m. Its long axis has a world-frame angle of about 39°, so the perpendicular closing direction has an angle of about 129°, with target quaternion [0.666, -0.237, 0.666, 0.237] in wxyz order. The downA orientation closes along -X, at 180°, giving a yaw difference of 51°. The orientation difference from downA may be about 0.89 rad. The right gripper’s current quaternion is [0.619, -0.342, 0.342, 0.619], from the forward-tilt motion toward 35°. Its orientation distance to the bar-grasp quaternion may be about 1.05 rad. I need to check whether it is within the 1.0 rad command limit. I’ll use SciPy to calculate the orientation distances from the current right-gripper orientation to both downA and the bar-grasp orientation.

The right gripper’s orientation distance to the bar-grasp orientation is slightly greater than the 1.0 rad limit, so I need an intermediate orientation. One option is to move above the bar using downA, which closes along environment X but is not yet aligned across the bar’s width, then rotate the yaw by 51° in a second action. That yaw change is below 1 rad and seems safe, though it adds an action. Alternatively, I could interpolate between the current right-gripper orientation and the bar-grasp orientation. A SLERP fraction of 0.9 would give an orientation change of about 0.936 rad. A proposed position of (0.32, -0.155, 1.02) m would be about 0.166 m from the current position. I favor using a fraction of 0.8, then completing the rotation in a later action. The left gripper’s change to downA is about 0.56 rad, and the right gripper’s change to the 0.8 intermediate orientation would be about 0.83 rad. Although the maximum rotational increment is 0.1 rad per step, the actual change may be closer to 0.03 rad per step. Combining removal of the current 35° tilt with the bar’s yaw alignment may be more complex. A 15-step action might achieve only about 0.4 rad of rotation, followed by another 15-step action toward the final orientation. The direct left-arm target near the yellow pepper is also close to the position limit. From the current position (-0.29, -0.025, 1.014) m to (-0.144, -0.212, 1.02) m, I estimate about 0.236–0.237 m of travel, and the local IK precheck might fail. I could first use (-0.18, -0.16, 1.03) m, with an estimated distance of 0.190 m. Instead, I’ll use the intermediate position (-0.17, -0.17, 1.03) m, about 0.194 m away, near the yellow pepper with an estimated offset of (-0.026, -0.042) m. For the right arm, moving from (0.29, 0.008, 1.019) m to (0.324, -0.156, 1.03) m would require about 0.168 m of travel. I’m planning a 15-step approach using the left intermediate position and an intermediate right-gripper orientation. I’ll first calculate the SLERP quaternion.

I’ll use the right gripper’s SLERP intermediate orientation at a fraction of 0.75, requiring about 0.78 rad of rotation. I’ll target (0.324, -0.156, 1.04) m for the right arm and (-0.17, -0.17, 1.04) m for the left arm, with the left gripper pointing straight down. Both grippers will remain open for this 15-step motion. The right gripper’s path passes above the red chocolate bar while its fingers rotate. With the bar at an estimated z = 0.75 m and the end effector targeted at z = 1.04 m, this appears safe. The left arm will move out of the white basket, possibly passing over the brown toy or a bar. Its downward-pointing finger tips will be around z = 0.88 m; with the brown toy’s top estimated at z = 0.82 m, that leaves about 0.06 m of clearance. I’ll proceed.

The left end effector is currently at x = -0.215 m, y = -0.119 m, while the yellow pepper’s estimated world position is x = -0.144 m, y = -0.212 m. The pepper appears at pixel (475, 350), toward the bottom right of the left wrist image. I need to move the left gripper over its horizontal position; the gripper is already pointing downward. The right chocolate bar appears near wrist-image pixel (350, 220). The right gripper has reached the intermediate orientation and still needs the final bar-grasp orientation. I could target pre-grasp end-effector positions of (-0.144, -0.212, 1.00) m on the left with the downward orientation, and (0.324, -0.156, 1.00) m on the right with the bar-grasp orientation. I estimate the target distances as 0.115 m and 0.04 m, respectively, with about 0.26 rad of rotation remaining on the right. A 15-step action might move the left arm about 0.09 m toward its target. Should I instead use a slow, 3-step approach? The current end-effector heights are 1.028 m and 1.04 m, with the objects about 0.23 m below, so the grippers are not yet near contact. I could use 12 navigation steps toward a pre-grasp height of 0.99 m, putting the finger tips near 0.83 m above the pepper and bar. More specifically, I estimate the yellow pepper’s top at z = 0.80 m. A left end-effector height of 0.98 m would put the tips at about 0.822 m, leaving roughly 0.02 m of clearance. The right bar’s top is estimated at z = 0.755 m; an end-effector height of 0.95 m would put the tips at about 0.792 m, leaving 0.037 m of clearance. I could perhaps descend directly to grasp heights of 0.95 m on the left and 0.925 m on the right, but I should first verify alignment in the wrist views after completing the right gripper’s rotation. I favor pre-grasp heights of 0.985 m on the left and 0.97 m on the right. The right grasp orientation closes perpendicular to the bar’s long axis. I need to check how the bar aligns with the fingers in the wrist image. Its long axis currently appears nearly vertical, slanting right at the top, with the fingers at the lower sides of the image. With the final orientation, should the bar appear vertical or horizontal? The fingers close along local Y, and the wrist image’s horizontal direction may correspond roughly to local Y. My reasoning is that the initial optical X axis is environment X, which corresponds to negative local Y for downA, so the camera’s horizontal direction is opposite the closing direction. If the bar’s long axis is perpendicular to that closing direction, it should appear vertical in the wrist image while the fingers close horizontally across its width. It already looks nearly vertical with the intermediate orientation; the final orientation may make that alignment exact. The yellow pepper should be centered between the fingers once the left end effector reaches its estimated horizontal position. It is currently at wrist-image x = 475 pixels, right of center. Moving the end effector by +0.071 m in X and -0.093 m in Y should move the camera similarly, but will the pepper shift left and up in the image? My earlier estimate placed the downA wrist camera 0.085 m along environment +X from the end effector, which would make an object directly beneath the gripper appear left of image center. Yet in obs_000048, the aligned green pepper appeared near x = 320 pixels, centered rather than left. Perhaps my camera-offset orientation estimate was wrong. I’ll check the actual camera centers and their offsets from the end effectors using the calibration in obs_000048 and obs_000117. For the earlier green-pepper alignment, the end effector was at (-0.357, -0.193, 0.949) m and the estimated object center at (-0.357, -0.193, 0.797) m. Computing the camera center from that observation should help clarify the discrepancy before I continue the approach.

The measured camera offset in the downward pose is approximately (0, +0.051, -0.085) m, rather than my earlier estimate of (+0.085, 0, -0.051) m. I made an error when expressing the initial offset in the link6 frame. The initial camera-center offset from the end effector is (0, 0.08484, 0.05094) m. Since the initial local X axis maps to environment Y, local Y to environment -X, and local Z to environment Z, the local offset is (0.08484, 0, 0.05094) m, not (0.05094, -0.08484, 0) m. Thus, the camera is offset about 0.0848 m along local +X and 0.0509 m along local +Z. In the downward pose, this maps to (0, 0.0509, -0.0848) m. The initial optical Z direction, (0, 0.866, -0.5) in the environment frame, is (0.866, 0, -0.5) locally and becomes (0, -0.5, -0.866) in the downward pose, as I calculated before. The camera is therefore above and behind the object along +Y, looking forward and downward. An object directly beneath the end effector should appear horizontally centered. Its vertical image position is less certain: with the camera at end-effector y + 0.05 m and z - 0.085 m, a representative vector to the object is about (0, -0.05, -0.07) m, which may put it near image y = 320 pixels. The green pepper appeared near y = 290 pixels in obs_000048. Horizontal centering at x = 320 pixels should nevertheless make alignment easier. The current right-camera offset includes about +0.035 m in environment X because of the gripper’s yaw. The bar is near wrist-image x = 350 pixels, so it appears close to alignment. For a general downward grasp with closing direction c = (cx, cy, 0), local Z is (cy, -cx, 0). The camera offset is 0.0848 m along downward local X plus 0.0509 m along local Z. For the bar orientation, its horizontal component could be approximately (0.039, 0.032) m. Could that shift the object horizontally in the image? The optical X axis is negative local Y, or -c, and both offset components are perpendicular to it. They affect image depth and vertical position rather than horizontal position. An object at the end effector’s horizontal coordinates should therefore appear at image x = 320 pixels for any yaw. The yellow pepper is currently near left-wrist x = 476 pixels. I need to shift the left end effector so it moves toward x = 320 pixels, and the estimated world target seems appropriate. The right bar is near x = 350 pixels; its estimated horizontal position, (0.324, -0.156) m, is approximately aligned with the end effector. Completing the bar-grasp orientation should bring it near x = 320 pixels. I’ll target the left end effector at (-0.144, -0.212, 0.985) m with the downward orientation, and the right at (0.324, -0.156, 0.97) m with the bar-grasp orientation. I estimate the left travel distance at 0.118 m with almost no rotation remaining, and the right travel distance at 0.07 m. The left might move only about 0.06 m during this action, although it moved about 0.12 m in the preceding 15 steps, so it may reach the target. I’ll use 12 steps with both grippers open. This is an approach to poses above the objects; there is no contact yet.

Both end effectors have reached their intended positions. The yellow pepper’s wrist-image center is near (330, 230) pixels, and the bar’s center is near (325, 195) pixels. I should now descend. The left end-effector height is 0.985 m, with the finger tips at about 0.827 m. The yellow pepper’s top may be at 0.80 m, leaving about 0.027 m of clearance. The right end-effector height is 0.97 m, with the tips at about 0.812 m. Using the estimated bar-top height of 0.755 m gives about 0.057 m of clearance. I could use a left grasp height of 0.949 m, as with the green pepper, and perhaps 0.915 m on the right. However, the table height is estimated at 0.75 m, and 0.755 m was an assumed world height for the bar’s center; its actual top could be at 0.77 m. The finger-tip height is the end-effector height minus 0.1576 m. A right end-effector height of 0.925 m would put the tips at about 0.767 m, near the bar’s top or middle. A left height of 0.95 m would put the tips at about 0.792 m, which seems suitable for the pepper. The yellow pepper is centered between the widely open fingers. Is the right gripper properly aligned with the bar? The bar appears long and vertical in the wrist image, which looks appropriate. The pads are near the bottom at x = 0–125 and x = 515–640 pixels, and the opening direction is horizontal in the image. The bar is about 110 pixels wide at its center, so I expect the fingers to grasp across its width. The grasp point should be near the bar’s center, perhaps at end-effector y = -0.156 m. In the wrist image, the bar extends from y = 55 to 337 pixels, with its center around y = 196 pixels; contact should be near mid-length, around y = 200 pixels. For the green pepper, the pre-grasp image center was around y = 230 pixels. Would descending make the object appear larger and lower? I’ll descend with both grippers open for 3 steps, targeting a left height of 0.94 m and a right height of 0.915 m. The measured heights afterward may only reach about 0.956 m and 0.941 m, respectively. I’ll inspect the next observation before continuing.

The right chocolate bar appears large in the wrist view, with its center near pixel (340, 265) and the gripper pads on either side. I’ll close both grippers in place for 3 control steps.

The left opening command is 0.45, with contact against the yellow pepper appearing stable. The right opening command is 0.327; perhaps the right gripper is not fully closed yet. Its fingers appear to contact the chocolate bar at the middle of its sides, around image x = 200 and 420 pixels. Has the bar rotated slightly? The contact looks suitable to continue closure. I’ll keep both arms at the same poses and both grippers commanded closed for another 3 control steps, allowing the right gripper to continue closing while the left remains stable before lifting.

The right gripper’s opening command is 0.185 and is still decreasing. The bar has rotated to a vertical orientation as expected from the finger alignment. I considered another 3 closure steps to let the command settle, perhaps near 0.08, before lifting. It may already be held well enough for a test lift, but I prefer another 2 closure steps first. I’ll hold both poses and keep both grippers commanded closed for those 2 steps.

The right gripper’s opening command is stable at 0.185, and the contact looks good. I’ll perform a test lift for 2 control steps, targeting an end-effector height of 0.98 m on the left and 0.951 m on the right. I’ll keep both grippers closed and preserve their current orientations, then check whether the yellow pepper and chocolate bar move with them.

Both objects followed the test lift. In the head-camera view, the yellow pepper is near pixel (240, 285), and the red chocolate bar is near (475, 258), up from its earlier image y coordinate of 267. I’ll take the yellow pepper to the white basket and the bar to the blue basket, possibly using the forward-tilt technique again. The current end-effector positions are (-0.144, -0.213, 0.974) m on the left and (0.324, -0.158, 0.945) m on the right. The estimated horizontal basket centers are (-0.28, 0.06) m for the white basket and (0, 0.06) m for the blue basket. Their destinations are separated by 0.28 m in X, which seems sufficient. Both transport paths would move leftward and forward, so I need to consider arm clearance near the center. After closure, the bar appears vertical in the wrist view, consistent with its world long axis being perpendicular to the closing direction. The bar-grasp orientation has an approximate closing vector of (-0.63, 0.776), while the long-axis vector is (0.776, 0.63), at about 39° in the world frame. With an estimated length of 0.12 m, the held bar extends approximately ±0.047 m in X and ±0.038 m in Y around its center. At the blue basket’s horizontal center, (0, 0.06) m, it should remain clear of the pepper at x = -0.28 m. The right arm’s links may pass near the center while the left arm is around x = -0.2 m, but their separation appears adequate. A possible left waypoint above the white basket’s front is (-0.29, -0.03, 1.03) m. I initially estimate its distance at about 0.236 m; the component changes are (-0.146, +0.183, +0.056) m, giving roughly 0.24 m, within the 0.25 m command limit. A right waypoint above the blue basket’s front at (0, -0.03, 1.02) m is about 0.351 m away, exceeding that limit. I could first use (0.15, -0.09, 1.02) m, about 0.205 m away, or (0.14, -0.06, 1.03) m, about 0.214 m away, then continue toward horizontal coordinates (0, -0.03) m. The left arm might reach its front waypoint in one 15-step action, though actual motion could be partial, and the long target with a downward orientation might fail the IK precheck. Closer alternatives are (-0.24, -0.10, 1.04) m on the left, about 0.165 m away, and (0.16, -0.08, 1.03) m on the right, about 0.188 m away. Before moving horizontally, I need to raise the objects. Their bottoms may currently be at z = 0.77 m for the pepper and 0.76 m for the bar. The left path toward (-0.24, -0.10) m passes near the left bar at (-0.263, -0.145) m and the brown toy at (-0.163, -0.114) m; carrying the pepper at its current height, around z = 0.8 m, could cause a collision. I considered a target height of z = 1.04 m, estimating rises of 0.066 m on the left and 0.085 m on the right, with object bottoms around 0.84 m and 0.85 m. That would put the pepper above the brown toy’s estimated top at 0.82 m, and the right path appears clear. However, combining the lift with horizontal travel could bring the pepper near an obstacle before it is high enough. Along the proposed left path, at y = -0.145 m the pepper would be around x = -0.206 m, possibly close to the left bar, whose extent may reach x = -0.21 m. A vertical lift first is safer. I considered raising both end effectors to z = 1.06 m; after 8 steps they might only reach about 1.02 m on the left and 1.0 m on the right, with an object bottom around 0.85 m. For the immediate action, I’ll target z = 1.06 m on the left and 1.04 m on the right, since the right needs less height. I’ll use 8 steps, keep the horizontal positions and orientations unchanged, and maintain both closed grippers. This will also let me check that the grasps remain stable before horizontal transport.

Both objects have been lifted. The yellow pepper now appears high in the head-camera view near pixel (225, 265). I considered moving the left arm directly toward the white basket’s front at (-0.29, -0.03, 1.04) m, an estimated distance of 0.233 m, but that target could fail the IK precheck. I’ll instead use the closer waypoint (-0.25, -0.08, 1.05) m, about 0.173 m away. For the right arm, I’ll use an intermediate waypoint toward the blue basket at (0.16, -0.08, 1.04) m, about 0.184 m away. I’ll use 15 steps for both arms, keeping both grippers closed and preserving their current orientations, including the bar’s grasp orientation. Afterward, I’ll continue toward the basket fronts. I need to avoid the held right bar passing too close to the middle bar, whose estimated horizontal position is (0.108, -0.118) m. The right arm’s planned path runs from (0.324, -0.159) m to (0.16, -0.08) m. The held bar extends approximately ±0.05 m in X, so the closest separation from the middle bar may be about 0.06 m. However, I estimate the held bar’s bottom at z = 0.86 m and the middle bar at z = 0.76 m, which should provide safe vertical clearance.

The left gripper is now above the white basket’s front, and the right is above the area between the blue and red basket fronts. I could move to front approach positions of (-0.29, -0.026, 1.03) m on the left and (0, -0.02, 1.03) m on the right, with estimated travel distances of 0.07 m and 0.172 m. A 15-step action might reach them. At the right target, the held bar would extend approximately ±0.05 m in X, within the blue basket’s estimated width of 0.24 m. I could then tilt it forward by 35°, as before, to swing it into the blue basket. Alternatively, the left gripper could tilt by 45° from its current horizontal position of (-0.25, -0.08) m. I estimate that this would swing the pepper forward by about +0.11 m in Y, placing it at y = 0.03 m inside the basket; x = -0.25 m is also within the basket. However, I prefer to repeat the previously successful approach: move the left gripper to (-0.29, -0.026, 1.03) m while pointing downward, then tilt forward. For the right arm, I would move to (0, -0.02, 1.03) m with the bar-grasp orientation, then tilt +35° about environment X. Would that preserve the yaw? The intended swing is toward environment +Y. Premultiplying the bar-grasp rotation by Rx(35°) gives a rotation change of about 0.61 rad. It rotates the downward finger direction forward toward +Y and also rotates the closing direction, approximately (-0.63, 0.776, 0), so the closing direction would no longer be horizontal. That seems acceptable while holding the bar. The bar’s long axis would rotate too, swinging the object toward +Y over the basket centered at x = 0 m. I’ll calculate the quaternion for Rx(35°) multiplied by the bar-grasp rotation.

At the right front-approach target, x = 0 m and y = -0.02 m, a subsequent 35° forward tilt should shift the held bar’s center about +0.07 m in Y to y = 0.05 m. For the left target at x = -0.29 m and y = -0.026 m, the same estimated shift would put the pepper’s center at y = 0.044 m. Those positions seem suitable for placement inside the baskets. I’ll use 15 control steps to move both arms to the basket-front poses. The right arm’s estimated travel distance is 0.172 m, within the command limit, but will the local IK solve converge? Reaching toward the blue basket’s center at x = 0 m requires the right arm to reach across toward the middle. The target at y = -0.02 m and z = 1.03 m seems reachable, though the precheck could still produce a small error. Its current horizontal position is (0.161, -0.081) m, and the target is (0, -0.02) m. I could use a closer intermediate point at x = 0.04 m and y = -0.04 m, but the direct move of about 0.17 m is similar to previous transfers. I’ll try the direct targets while maintaining both grasps and their current orientations.

The left target would pass the precheck, but the right target failed with about 52 mm of position error. I should use a closer right waypoint at (0.06, -0.04, 1.03) m, an estimated travel distance of 0.11 m, then perhaps move to x = 0 m afterward. Could I use the left arm for the middle-basket bars instead? The right arm may still be able to reach x = 0 m at y = -0.02 m with the top-down orientation. A joint limit might be causing the difficulty, but a closer increment could pass the local precheck. I’ll retain the left target at (-0.29, -0.026, 1.03) m and use the closer right waypoint at (0.06, -0.04, 1.03) m for 12 steps, maintaining both grasp orientations and keeping both grippers closed.

The right arm’s precheck still has a position error of about 9.3 mm. I could try a closer waypoint at x = 0.09 m, y = -0.055 m, or adjust its orientation. Instead, I’ll move the left arm alone to the white basket’s front while holding the right arm in place, then work on the right transfer with smaller increments. Both targets undergo the precheck, so holding the right arm at its current pose should allow the left move to proceed. The arms do not need to move simultaneously on every action. I’ll use 12 steps with the left target at (-0.29, -0.026, 1.03) m. For the right arm, I could read the exact pose from the observation JSON, but I’ll use the rounded pose supplied in obs_000167: position (0.161, -0.081, 1.039) m and quaternion [0.666, -0.237, 0.666, 0.237] in wxyz order. I expect the approximately 0.001 m positional rounding and small quaternion rounding to be insignificant for the precheck. Both grippers will remain commanded closed.

The left gripper is at the white basket’s front, so I can tilt the yellow pepper into the basket and later release it while the right arm remains elevated. I could also move the right arm a short distance to x = 0.10 m, y = -0.06 m, keeping its current quaternion and z = 1.039 m. That move is about 0.065 m and will likely pass the IK precheck. I considered using 8 steps for both the left gripper’s 35° forward tilt and the right arm’s short move. However, I estimate that the left tilt needs 16 steps to reach the full angle. I’ll use 10 steps now, which may let the right arm reach its waypoint, then continue with the left arm’s lowering and release and the right arm’s next move. This should avoid collisions: the pepper will swing into the basket while the bar stays high. I’ll hold the left end-effector position unchanged and target the 35° tilt quaternion [0.6272, -0.3265, 0.3265, 0.6272] in wxyz order. The right target will be (0.10, -0.06, 1.039) m with its current quaternion. Both grippers will remain closed for this 10-step action. I expect the precheck to pass.

The right end effector is now at x = 0.1 m, y = -0.061 m. The held bar appears high in the head-camera view at pixel (361, 205), just in front of the blue basket, whose front edge is also near image y = 205 pixels. I could try moving the right arm to x = 0 m, y = -0.02 m, with an estimated travel distance of 0.108 m. The earlier attempt from x = 0.161 m failed, but the arm is closer now, so perhaps the precheck will pass. The left gripper needs to complete its 35° forward tilt from an estimated current tilt of about 20° and lower toward z = 1.0 m. I could target (-0.29, -0.023, 1.01) m with the 35° tilt while moving the right arm to (0, -0.02, 1.03) m for 8 steps. If the right target fails its precheck, the left action will not execute either. I could move the arms separately to avoid that. Instead, I’ll try a shorter right-arm move to (0.02, -0.03, 1.03) m, with an estimated travel distance of 0.087 m. The x coordinate of 0.02 m is within the blue basket and close enough to its center for a subsequent forward tilt to swing the bar inside. I’ll lower and continue tilting the left gripper while making this right-arm transfer, keeping both grippers closed for 8 steps. I expect the shorter right target is likely to pass the precheck.

The right-arm target at x = 0.02 m, y = -0.03 m failed the IK precheck with the bar-grasp orientation, perhaps because of a joint limit. I could tilt the right gripper first to improve its reach, or try a closer waypoint at x = 0.06 m, y = -0.05 m. Could I place the bar from x = 0.1 m using a tilt and lateral swing? The basket is estimated to be centered at x = 0 m, with a width of 0.24 m and its right edge at x = 0.12 m. With the bar’s center at x = 0.1 m and its long axis extending approximately ±0.05 m in X, it would be partly outside. A forward tilt would not change the center’s X coordinate, though rotation could change the long axis’s X extent. I could rotate the bar’s yaw so its long axis lies along Y, reducing its X extent, then place it from x = 0.06 m. Moving the right end effector to x = 0.06 m may be possible. The earlier target at x = 0.06 m from x = 0.161 m missed the position tolerance by about 9.3 mm, but a move from x = 0.1 m to x = 0.06 m would likely pass. I could use y = -0.04 m, or the smaller waypoint at x = 0.06 m, y = -0.05 m. I still want to aim for x = 0 m, although a fully contained placement may be sufficient. If the right arm cannot reach x = 0 m with its current orientation while reaching across its body, would changing to downA, which closes along environment -X, improve the IK solution? The right arm’s earlier successful white-basket placement was at x = 0.29 m. Reaching the middle basket at x = 0 m requires extending left across the body; would joint 1 need to become negative? The bar-grasp orientation’s 51° yaw may require more joint motion and put the arm near a limit. Could downA make x = 0 m easier to reach? I’ll inspect the joint states, including the current right-arm joints in obs_000189, to understand the kinematic difficulty.

The right arm’s measured joint angles are joint 2 = 2.308 rad, joint 3 = 2.383 rad, joint 4 = -1.646 rad, and joint 6 = 1.362 rad. Perhaps joint 3 is approaching a limit of 2.5 rad and restricting the reach. Would tilting forward change joint 4 and reduce the required joint 3 angle? Tilting the left gripper previously allowed it to lower farther. The right gripper could tilt at its current horizontal position, x = 0.1 m and y = -0.061 m, swinging the bar forward by about 0.08 m to y ≈ 0.02 m, inside the basket front. However, x = 0.1 m is near the right edge. I estimate the blue basket’s interior X range as -0.11 to +0.11 m. The bar’s original world long-axis angle is about 39°. Applying Rx(35°) would rotate its long-axis vector from approximately (0.776, 0.63, 0) to (0.776, 0.516, 0.361), leaving its X extent at about ±0.047 m. With its center at x = 0.1 m, it would reach x = 0.147 m, beyond the right rim estimated at x = 0.12 m. It could hit the rim. It might still drop inside with its center at x = 0.1 m and part of it over the wall, but I should shift it left by at least 0.05 m to center it at x = 0.05 m. Another option is to rotate the bar’s long axis along environment Y before placement. Its X half-width would then be about 0.015 m, allowing a center at x = 0.08 m to remain inside. The current closing direction is approximately (-0.63, 0.776), and the bar’s long-axis direction is approximately (0.776, 0.63). A +51° yaw about environment Z would rotate the long-axis angle from 39° to 90° and the closing-direction angle from 129° to 180°, or environment -X. That is the downA orientation. Since the bar rotated into alignment during closure and its long axis is perpendicular to the closing direction, changing the right gripper to downA should turn the held bar lengthwise along +Y and narrow its X extent. I could first rotate to downA while staying at x = 0.1 m, y = -0.061 m. That orientation might also make a target at x = 0.02 m, y = -0.03 m easier for IK, after which I could tilt forward as before. There is no need to preserve the bar’s original orientation during transport or placement. I also considered combining the rotation with a move to (0.06, -0.04, 1.03) m, estimating a position change of about 0.05 m and an orientation change of about 0.89 rad, below the 1 rad limit. I’ll instead try the right target (0.04, -0.03, 1.03) m with downA, while continuing the left gripper’s planned tilt and lowering motion. If the right precheck fails, I’ll move the left arm alone. I estimate the held bar’s bottom at z ≈ 0.87 m from 1.038 - 0.157 - 0.01 m. That is about 0.11 m above the middle yellow chocolate bar at z ≈ 0.76 m, so rotating the held bar’s long axis from 39° to 90° appears safe despite sweeping near that object horizontally. The right orientation change from the bar-grasp pose to downA is about 0.892 rad, below 1 rad. I estimate the distance to (0.04, -0.03, 1.03) m at 0.074 m. The new orientation may let the IK precheck pass. I’ll keep both grippers closed and use 10 steps to rotate and shift the bar while finishing the pepper’s placement motion.

The combined right-arm rotation and translation still failed the precheck. I should try a smaller move or separate the orientation change from translation. Right joint 1 is at about 0.474 rad; reaching x = 0.04 m might require about 0.7 rad, which seems acceptable, but joint 3 may be near its maximum. Reaching forward to y = -0.03 m and leftward to x = 0.04 m might require joint 3 to exceed its limit. Lowering could help. The current right end-effector height is 1.038 m, and the rejected target height was 1.03 m, only slightly lower. A height of 0.98 m might improve the reach, but I estimate the held bar’s bottom would then be at z = 0.81 m, below the basket rim at about 0.83 m. With its center near y = -0.03 m, just outside the interior, and its long axis extending about 0.06 m along +Y into the basket, rotating it horizontally could hit the front rim. I should not lower it until it is over the interior. I could tilt forward at the current position to swing the bar into the basket and change the joint angles, then move left. I estimate that the tilt would shift the object about +0.08 m in Y, putting its center near y = 0.02 m inside the basket. Its center at x = 0.1 m would remain near the edge, but rotating to the straight-down downA orientation would turn the bar lengthwise and reduce its X extent to about 0.015 m. With the right interior width estimated at 0.11 m, that may be close but acceptable. I might then release from x = 0.08 m. Perhaps reaching x = 0 m is unnecessary, although I should aim as close to the basket center as possible and could try x = 0.07 m later. First, I’ll rotate the right gripper to downA at its current position without translating, narrowing the bar’s sideways extent and testing whether the IK precheck can solve that pose. The orientation change is about 0.892 rad, so I expect it to pass. Could the orientation-only precheck still fail? The earlier rotation error of about 3° may reflect nearby joint limits, but removing translation may help. I considered moving the left arm alone; instead, I’ll continue its placement motion while rotating the right gripper in place at (0.1, -0.061, 1.038) m. I’ll retain the left target at (-0.29, -0.023, 1.005) m with its planned forward tilt, keep both grippers closed, and try 10 control steps.

The yellow pepper is ready to be released from the left gripper. The right gripper has rotated about halfway toward the straight-down downA orientation. Its current quaternion is [0.599, -0.377, 0.599, 0.376], which I estimate corresponds to a yaw of about 26°. Does the bar look more vertical in the head-camera view? It is near pixel (367, 190), but its long axis still appears diagonal. I’ll continue rotating the right gripper toward downA without translating it, keeping the bar held. At the same time, I’ll open the left gripper while holding its current pose. Five control steps may fully open the left gripper and bring the right orientation closer to its target. I’ll check the pepper’s placement in the next observation after release.

The yellow pepper is in the white basket. The right bar appears high in the head-camera view near pixel (373, 186), with its length likely now along environment +Y. The right gripper is close to the straight-down downA orientation, with perhaps 0.2 rad remaining. Its current quaternion is [0.554, -0.44, 0.554, 0.439], compared with downA at [0.5, -0.5, 0.5, 0.5]; I estimate that difference at 0.31 rad. Could I move directly from the current orientation to the 35° forward-tilted downA orientation? The target quaternion is approximately [0.627, -0.326, 0.326, 0.627], with an estimated orientation difference of about 0.75 rad, within the 1 rad limit. The right end effector is at x = 0.099 m, y = -0.061 m. Tilting forward will swing the bar along +Y into the blue basket, but its center is near the right edge. Assuming its length is now along Y and its width is 0.03 m, its estimated X extent is 0.084–0.114 m, while the basket’s interior right edge may be at x = 0.11 m. It might just fit, but I should shift left slightly to x = 0.08 m if possible during the tilt. I’ll try the right target (0.08, -0.04, 1.03) m with the 35° tilt, estimating a positional distance of 0.031 m and an orientation change of 0.76 rad. The tilted orientation might improve the IK solution. After the swing, I estimate the bar’s center at y = -0.04 + 0.08 = 0.04 m and x = 0.08 m, inside the basket. The left arm needs to retract after releasing the pepper. Its current end-effector pose is (-0.29, -0.022, 1.007) m, tilted with the gripper open and the basket below. I’ll move upward and backward to (-0.25, -0.12, 1.06) m while returning to downA. I estimate an orientation change of 0.61 rad and a positional distance of 0.138 m; this appears to provide a safe withdrawal. The next left-arm target could be the left Snickers bar or the brown toy. I considered moving directly above the Snickers bar at (-0.263, -0.145, 1.02) m with a suitable bar-grasp orientation, but the rotation from the current 35° tilt might exceed 1 rad, so I’ll leave that for later. The withdrawal waypoint also heads toward the left bar. I’ll use 10 control steps, keeping the left gripper open and the right gripper closed. The right arm may not fully reach the 35° tilt in this call; afterward, I can continue with lowering and release.

The right gripper has not quite reached its target orientation. Its measured wxyz quaternion is [0.612, -0.367, 0.402, 0.573], compared with the desired [0.627, -0.326, 0.326, 0.627], leaving an estimated 0.24 rad of rotation. Its horizontal position is (0.077, -0.036) m. The fingers may currently be tilted about 30°, although the measured orientation is not simply Rx(35°) multiplied by the straight-down orientation because the interpolated motion is coupled. The bar appears vertical and elevated over the front-right of the blue basket, with the basket filling the wrist-view background. Its center may be near x = 0.08 m, y = 0.03 m. Before release, I need to make sure the bar is inside rather than over the right rim. In the head view, it appears near pixel (358, 160), while the blue opening spans approximately x = 265–374 pixels, placing it inside but near the right edge. Its actual center may instead be around x = 0.08 m, y = 0.05 m. With its length along environment Y and an estimated width of 0.03 m, it appears to fit. I can finish the tilt and lower the right end effector to z = 1.00 m in preparation for release. I initially considered 3 lowering steps. The left arm is still near the white basket front but moving away. Its measured position is (-0.269, -0.076, 1.032) m, and its orientation is partway toward straight down. I’ll use 5 steps to continue retracting it toward (-0.25, -0.12, 1.06) m with quaternion [0.5, -0.5, 0.5, 0.5] and the gripper open. At the same time, I’ll lower the right arm toward (0.077, -0.036, 1.00) m with the planned 35° tilt, keeping its gripper closed until release.

The rightmost bar is over the blue basket, so I’ll release it while beginning alignment for the remaining left Snickers bar. The left end effector is at (-0.259, -0.102, 1.046) m, with quaternion [0.527, -0.471, 0.472, 0.527], nearly pointing downward, and its gripper is open. The left bar’s estimated horizontal position from the head view is (-0.263, -0.145) m. Its head-image endpoints are approximately (177, 276) and (218, 244) pixels, giving differences of +41 pixels horizontally and -32 pixels vertically and an estimated world long-axis angle of about 43°. A grasp orientation similar to the previous bar’s quaternion, approximately [0.666, -0.237, 0.666, 0.237] in wxyz order, should let the fingers close across its short axis. The bar’s current head-image center appears unchanged near (197, 262) pixels. I’ll target a left pre-grasp pose at (-0.263, -0.145, 0.985) m with that bar orientation. I estimate the orientation change at about 0.88 rad, below the 1 rad limit, and the positional distance at about 0.074 m. I considered 8 steps, though the orientation might still be incomplete afterward. Opening the right gripper at its current pose should need about 3 steps; I also considered 5 steps to allow the left approach to progress. The brown toy is near horizontal position (-0.163, -0.114) m. At a left end-effector height of 0.985 m, I estimate the finger tips at z = 0.83 m, only 0.01 m above the toy’s estimated top at z = 0.82 m. However, the left path keeps x nearly constant from -0.259 to -0.263 m and moves y from -0.102 to -0.145 m, away from the toy, so it appears safe. The left fingers are currently open and tilted at an end-effector height of 1.046 m, with one near the white basket; moving downward and backward also appears to avoid it. I’ll use 6 steps for the simultaneous left approach and right release, then inspect the result.

The rightmost bar is now in the blue basket. I initially counted four remaining objects, but there are only three: the left red bar, the middle yellow bar, and the brown wooden toy. Of the initial seven objects, the green pepper, yellow pepper, white toy, and rightmost bar have been placed. The left arm is approaching the left bar, and the right arm is free above the blue basket. I could have the right arm handle the middle yellow bar while the left handles the left bar, then decide which arm should handle the brown toy. The toy is on the left, so the left arm is nearby, but placing it in the red basket would require crossing the middle. The right arm could instead place the middle bar, travel to the brown toy, and then carry it to the red basket. Another allocation would let the left arm handle the middle bar after placing the left bar, while the right goes directly to the brown toy now. The right end effector is currently at x = 0.075 m, y = -0.033 m above the blue basket. The brown toy is estimated at x = -0.163 m, y = -0.114 m, with an estimated travel distance of 0.252 m, slightly beyond the 0.25 m command limit; a raised waypoint could address that. Having the right arm handle the brown toy while the left handles the left bar could be efficient: the toy would go to the red basket, the bar to the blue basket, and either arm could then handle the middle bar. However, that would put the arms close together. The left bar is near x = -0.26 m and the brown toy near x = -0.16 m, a separation of about 0.1 m. The right arm would reach left of its base while the left arm reaches right of its base, creating a possible collision risk. Using the left arm for the brown toy avoids that nearby approach, but its later transfer to the red basket would be long. I could have both arms place their respective bars in the blue basket, then let the left arm carry the brown toy to the red basket while the right clears the area. Alternatively, the right could approach the brown toy after the left bar is placed, though the left arm moving toward the blue basket and the right moving toward the toy could still conflict. With only three objects remaining, roughly 300 steps may be enough for a more sequential plan. The right arm seems better suited to the final brown-toy transfer. The left arm’s base is at x = -0.3 m, and reaching the red basket at x = +0.29 m, y = 0 m with a tilted orientation might be impossible: the distance is about 0.6 m, and the maximum reach may also be about 0.6 m. For the right arm, moving the toy from x = -0.16 m to the red basket at x = +0.28 m is about 0.44 m and seems manageable. The left arm is better suited to carrying bars to the blue basket at x = 0 m, about 0.26 m away. One appealing sequence is for the right arm to handle the brown toy now while the left handles the left bar, then for the right to pick the middle bar. After placing the toy near x = 0.29 m, the right arm would be close to the middle bar at x = 0.108 m. But the immediate adjacent grasps remain a concern. The left gripper would be around the bar at (-0.263, -0.145) m, and the right around the toy at (-0.163, -0.114) m, with estimated centers 0.113 m apart. Open grippers about 0.09 m wide in different orientations could come close. The brown toy and left bar are separated by about 45 pixels in the head view, or an estimated 0.116 m in the world frame. Simultaneously grasping adjacent objects with each gripper open about 0.1 m wide would be difficult, so I should avoid it. I could let the right arm wait until the left bar has been lifted and moved away. The left grasp might take about 20 steps, while the right moves to a staging pose at (0.05, -0.20, 1.06) m, perhaps preparing for the middle bar. Once the left moves toward the blue basket, the right could approach and grasp the brown toy during the left bar’s transport. Another safe option is to have the right grasp the middle bar at (0.108, -0.118) m while the left handles the left bar. After releasing the left bar, the left arm could retreat to a staging position while the right places the middle bar and then approaches the brown toy. There are 875 steps remaining, so I can prioritize reliable manipulation. The left arm still needs its final approach to the left bar. The free right arm could retract to a clear staging pose such as (0.25, -0.20, 1.05) m with the straight-down downA orientation and its gripper open, then handle the toy later. However, the middle bar is about 0.37 m from the left bar, so the right arm could align and grasp it concurrently without the close spacing of the bar-and-toy option. I’ll handle the two bars in parallel, then have the right arm handle the brown toy while the left retreats. The right arm’s next object is therefore the middle yellow bar, estimated at horizontal position (0.108, -0.118) m with its top at z = 0.755 m. I need its grasp orientation. In the head view, its center is near pixel (370, 251), and its long axis appears to run from the lower-left endpoint (359, 270) to the upper-right endpoint (383, 233), giving differences of +24 pixels horizontally and -37 pixels vertically. Its world long-axis angle may be about 65°, with a perpendicular closing direction around 155°, requiring a different quaternion. I’ll use the current head-camera calibration and a plane at z = 0.755 m to calculate the bar orientations. The middle bar appears unchanged.

The left grasp target should use the wxyz quaternion [0.649, -0.280, 0.649, 0.280] rather than the previous quaternion with components near 0.666. The difference between the earlier 51° estimate and the 47° estimate is small. The current left quaternion, [0.578, -0.413, 0.54, 0.452], is partway through alignment. I’ll target the left pre-grasp position (-0.261, -0.14, 0.985) m with the revised orientation. The middle bar’s grasp quaternion is [0.620, -0.340, 0.620, 0.340]. The right gripper is open and currently has the tilted quaternion [0.622, -0.345, 0.361, 0.604]. Is its orientation distance to the middle-bar target about 0.9 rad? That needs calculation; my later rough estimate is about 0.85 rad, within the command limit. I estimate the left orientation change at 0.45 rad. The distance from the right arm’s current position, (0.075, -0.033, 1.015) m, to (0.109, -0.119, 0.985) m is about 0.099 m. I can move both open grippers toward these pre-grasp poses simultaneously for 12 steps. I need to check clearance as the right gripper leaves the blue basket. Its fingers are currently around the placed bar near the right edge. At the current end-effector height of 1.015 m, I estimate the tilted finger tips at z ≈ 0.88 m, giving 0.05 m clearance above the rim at z = 0.83 m. Moving backward out of the basket toward y = -0.119 m while rotating downward would lower the tips to about z = 0.857 m, still leaving 0.027 m clearance. The placed bar is near x = 0.08 m, and the planned right-arm displacement is +0.034 m in X and -0.086 m in Y, moving away from it. This appears safe. Could the open left gripper contact the nearby brown toy? The left bar’s estimated center is (-0.261, -0.14) m, and the toy is near (-0.163, -0.114) m, about 0.103 m away. The left closing-direction vector is approximately (-0.728, 0.685), with the open fingers roughly ±0.04 m along that direction. I initially considered the finger at center + 0.04c as pointing toward the toy, but its estimated position, (-0.290, -0.113) m, is actually farther in negative X. I have not explicitly located the other finger, though the sign of the closing vector does not change the pair of finger positions. The fingers extend downward along local +X rather than horizontally. Could the gripper body extend horizontally along local Z? In the top-down pose, the wrist body is above the objects, and the toy at x = -0.163 m remains about 0.1 m away, so the approach appears clear. I’ll move both open grippers to their respective pre-grasp positions and orientations for 12 control steps.

The left gripper is fully aligned. The right gripper has not reached its final orientation: its current wxyz quaternion is [0.628, -0.345, 0.578, 0.39], and local +X may still be tilted. Is the bar already vertical in the wrist view? It appears vertical and flat, so the alignment looks acceptable for continuing the approach. Both end effectors are at a pre-grasp height of 0.985 m. I’ll lower them toward a grasp height of 0.923 m, using each arm’s exact intended grasp quaternion and keeping both grippers open. I considered 3 steps followed by another 3 if needed. The right gripper may have about 0.24 rad of rotation remaining; would 3 steps be enough? It did not finish rotating during the previous 12 steps, perhaps because the IK motion is slow. Another option is 5 steps toward 0.93 m with the final orientation, followed by 2 steps toward 0.923 m. I’ll use 4 steps with both target heights set to 0.923 m. The left arm has no rotation remaining. I expect it may descend about 0.04 m to 0.945 m, while the right may also descend about 0.04 m and come close to its target orientation. I’ll inspect the next observation before proceeding.

The left end effector is at z = 0.94 m, with estimated finger-tip height 0.782 m and bar-top height 0.765 m, which looks suitable for closure. The right end effector is at z = 0.931 m, with estimated finger-tip height 0.773 m, also suitable. The yellow bar on the right may be narrower and may make contact at an opening command of about 0.2. I’ll close both grippers in place for 3 control steps.

Both gripper opening commands are 0.329 after 3 closure steps, so I think another 3–4 steps are needed. The left fingers appear to be near the lower middle of the bar rather than exactly at its center, but the grasp around the middle of the label looks suitable. The right fingers appear centered on their bar. I’ll continue closing both grippers in place for 3 steps.

The left opening command is 0.0. Did the gripper miss the red bar, or did the bar slip out during closure? The fingers appear fully closed, but I am unsure whether the bar is between them. In the wrist view, the fingers seem to touch at the center line; the pads may have closed in front of the bar while it lies below them, without making contact. In the head view, the bar still appears to be on the table. The right opening command of 0.203 likely indicates contact with the yellow bar, but I should verify both grasps. I am uncertain about the left bar’s alignment in the wrist images. In obs_000244, the fingers’ inner edges appeared near x = 240 and 400 pixels, with the bar perhaps about 180 pixels wide. In obs_000247, the fingers meet near x = 320 pixels, while the bar may be behind or above them. At image y = 280 pixels, its width may span x = 300–420 pixels. The fingers converge near (320, 270) pixels and may be contacting only its left edge. The bar’s central axis seems to be near x = 370 pixels, to the right of the gripper center at x = 320 pixels. My world-coordinate estimate of x = -0.261 m may therefore be off by about 0.02 m; perhaps the bar’s actual center is near x = -0.24 m. Its original head-camera center at (197, 262) pixels mapped to x = -0.263 m using a plane at z = 0.755 m. If its top is instead at z ≈ 0.78 m, that would give x ≈ -0.25 m. The grasp center’s Y coordinate is also uncertain. Was the bar’s axis already near wrist-image x = 365 pixels rather than 320 pixels in obs_000237? I also recall it extending from about x = 335 pixels at the top to x = 310 pixels at the bottom, with its center around x = 340 pixels. The approach target at world x = -0.261 m may have left the bar slightly right of center. In obs_000241, its top appeared to span x = 350–480 pixels and its bottom x = 290–390 pixels, with a central position near x = 385 pixels. After alignment, it looked long and vertical, but its center may have been near x = 380 pixels at the top and 340 pixels at the bottom, leaving the gripper closing near x = 320 pixels at the bottom edge. The grasp point may be offset both along the bar and sideways. Closure might have pushed it, although its position in the head view may be unchanged. I’ll test-lift both objects before transporting them and regrasp the left bar if it was missed. I’ll use 2 control steps, aiming for end-effector heights of 0.97 m on the left and about 0.96 m on the right, while keeping the grippers closed and their orientations steady. If the left gripper is empty, it will rise without the bar; if the right grasp is secure, the yellow bar should follow it. I need the next observation to confirm this.

The left red bar stayed on the table at the same location in the head-camera view, so the left grasp missed. Did the right yellow bar move with its gripper? The right gripper lifted 0.024 m, but the bar initially appeared near the same head-camera pixel (369, 251). Its size in the right wrist view seems unchanged, spanning image y = 75–425 pixels both before and after the lift, which suggests it is held. My revised head-camera estimate is (365, 250), only slightly different from the previous (369, 251). The right opening command is stable at 0.196, and I believe the bar remains held. I need to regrasp the left bar with a corrected center. I could transport the right bar first, or hold it while correcting the left grasp. Holding the right arm at its current pose for a few actions seems reasonable. I’ll use the head and left wrist views to localize the red bar more accurately by triangulating a recognizable feature with the current camera calibrations. The red bar appears near head-camera pixel (195, 263), with its gold icon perhaps at (207, 253). In the left wrist view, the gold icon may be near (371, 105); another estimate of its center is (373, 108). The upper portion of the bar appears to extend approximately from (325, 25) to (455, 90). I need more precise correspondences. Triangulating the gold icon should give the bar’s world position at its top surface. I could also match features in the central “SNICKERS” text. The earlier head-camera crop placed the gold icon near (209, 251). The bar currently appears unchanged, with the gripper no longer contacting it. I’m considering a gold-icon correspondence of head-camera pixel (208, 252) and wrist pixel (373, 107). Another candidate is the bottom corner at head-camera pixel (180, 276) and perhaps wrist pixel (319, 338), although the bottom may be hidden behind a finger. In the current wrist view, the bar’s bottom extends behind the closed fingers near y = 340 pixels, with a visible left edge near (315, 280). The gold icon should be easier to match. I could also compare the top-right corner near head-camera pixel (219, 244) with wrist pixel (453, 60), but that correspondence remains tentative. I’ll first generate enlarged crops of the current head-camera and left wrist images with coordinate grids, then inspect them to refine these feature locations before triangulating.

I’ll inspect the enlarged head-camera and left wrist crops to identify matching features on the red bar. Their coordinate grids should help refine its position through triangulation and correct the missed grasp point.

I initially estimate the red bar’s gold icon center at head-camera pixel (208, 250). I need to read the wrist crop’s coordinates carefully: it starts at original x = 280, and the grid line labeled x = 340 should be at display x = 120. The top labels appear to be 280, 300, 320, 340, 360, 380, 400, 420, 440, and 460. The displayed crop is 380 pixels wide, from 190 pixels enlarged by a factor of 2. I first wonder whether the wrist icon center is near original x = 369 or 350. Its displayed center may be near x = 177, with its displayed extent around x = 124–237, corresponding approximately to original x = 342–398. That supports the earlier estimate of original x = 370, with y ≈ 110. On closer inspection, another estimate for the head-camera icon center is (207, 251). I’ll triangulate this feature. The red bar’s bottom center appears near head-camera pixel (186, 272). In the wrist crop, a visible bottom portion may be near original pixel (337, 275) before it becomes occluded, but I am still unsure of the bottom wrapper’s exact y coordinate. A possible correspondence is head-camera pixel (183, 275) with wrist pixel (337, 280), where the fingers touch. The top end may correspond between head-camera pixel (215, 246) and wrist pixel (390, 40). I’ll calculate several triangulations using these tentative feature correspondences.

The triangulated points look coherent. The bar’s top surface is at approximately z = 0.755–0.78 m, with the label center near (-0.254, -0.147, 0.765) m and the gold icon near (-0.233, -0.128, 0.775) m. The estimated long axis runs from the bottom at (-0.282, -0.172) m to the top at (-0.220, -0.119) m, giving differences of +0.062 m in X and +0.053 m in Y and a length of about 0.081 m. The actual bar length may be 0.12 m, so those endpoints may not be exact. Its center is around (-0.251, -0.145) m. My previous grasp target, (-0.261, -0.14) m, was about 1 cm off, which seems enough to miss this narrow bar. I could grasp at the label center, (-0.254, -0.147) m, or the midpoint, (-0.251, -0.1455) m, with the end effector at z = 0.94 m. I’ll choose (-0.253, -0.1465) m. Relative to that center, the missed target had an offset of (-0.008, +0.0065) m. Projecting it onto the closing direction, (-0.728, 0.685), gives 0.0058 + 0.0045 = 0.0103 m, about 1 cm laterally. Along the long-axis direction, (0.685, 0.728), it gives -0.0055 + 0.0047 = -0.0008 m. This indicates a lateral miss of about 1 cm, causing one finger to push the bar and the gripper to close empty. I’ll correct the target by +0.008 m in X and -0.0065 m in Y, reopen the left gripper, and lower it from its current height of 0.963 m toward 0.94 m while preserving its grasp orientation. The right arm can prepare the held yellow bar for transport while the left regrasps. I considered moving it directly from (0.109, -0.119, 0.955) m to a blue-basket front waypoint near (0.04, -0.03, 1.03) m, but its current middle-bar orientation might cause IK difficulties. The straight-down downA orientation helped with lengthwise placement earlier. I’ll rotate the right gripper to downA and lift vertically at its current horizontal position to z = 1.04 m before moving toward the blue basket. The middle-bar closing angle is about 147.6°, compared with 180° for downA, giving a difference of 32.4°, or about 0.565 rad, with the current orientation also to consider. The planned vertical lift is 0.085 m and appears safe. I’ll use 8 control steps to reopen and move the left gripper to (-0.253, -0.1465, 0.94) m while lifting and rotating the right gripper with its grasp maintained. The empty left fingers are just above the bar, so opening while descending toward the corrected center appears safe. Afterward, I can close the left gripper again and perhaps move the right bar toward the blue basket.

After the correction, the red bar’s center in the left wrist view may still be near pixel x = 350, slightly right of the gripper center at x = 320. In obs_000249, I estimated the bar’s center near x = 360, so the small correction may have reduced that offset to x = 350. Does it need another correction? I targeted the label center using the head-camera view, but I am still unsure about the grasp’s Y alignment and whether I am visually identifying the same point rather than the overall bar center. My triangulated label-center estimate was approximately (-0.254, -0.1465) m horizontally, while the current end effector is at (-0.253, -0.146) m. If the calibration and orientation are exact, I expect that point to project near wrist-image x = 320. Yet I tentatively see the current label center near x = 330, or perhaps pixel (335, 220). The earlier triangulation used the guessed wrist correspondence (355, 190) in obs_000249, so that estimate also remains uncertain. I’ll use the current camera calibration to project the estimated world point (-0.2538, -0.14655, 0.765) m into the left wrist image. I expect its horizontal coordinate might be near pixel x = 321, but have not determined its vertical coordinate. Checking the projection should help verify the alignment before another correction.

The projection places the gold icon at wrist-image x = 331 pixels, close to my tentative visual estimate of 334 pixels. The label center projects to x = 318 pixels. I overestimated the visual offset, so the corrected target looks appropriate. The open pads are on either side of the bar, and the grasp point projects near (320, 236) pixels. I’ll close the left gripper. The right gripper still holds the yellow bar and has not fully reached the straight-down downA orientation. Its current wxyz quaternion is [0.551, -0.444, 0.551, 0.443], with an estimated 0.28 rad of rotation remaining. I can finish that rotation and lift toward an end-effector height of 1.04 m, keeping its current horizontal position, while the left gripper closes. I considered 3–6 steps, or an initial 3-step closure followed by another closure action if needed. I’ll use 4 steps for both arms. The left opening command might decrease from 1 to about 0.1 or 0; if the corrected grasp makes contact, I expect it to settle around 0.18. The right gripper will remain commanded closed.

The left opening command decreased from 1 to 0.157 over 4 steps. Has it stabilized against the red bar? That could indicate contact, since the similar-width bar in the right gripper has an opening command near 0.19. I’ll test-lift the left bar while beginning the right arm’s transfer. I’m considering a left end-effector height of 0.97 m, a lift of about 0.03 m over 2 steps. For the right arm, a waypoint at (0.06, -0.06, 1.04) m with the straight-down downA orientation would be an estimated 0.078 m move from its current horizontal position of (0.109, -0.123) m. That is within the command limit and would likely pass the precheck. I could then approach (0.06, -0.04) m horizontally before tilting forward. Another option is (0.06, -0.05, 1.04) m, with an estimated travel distance of 0.094 m. The downA orientation may help with the precheck when reaching toward the middle. The right arm previously reached x = 0.1 m, y = -0.061 m with downA. I’ll choose the closer waypoint (0.08, -0.06, 1.04) m, an estimated 0.068 m move, which appears safe and likely to pass. The next motion can tilt the bar forward at x = 0.08 m. Both arms share the same step count, so I’ll use 5 steps for the left test lift and right transfer. I expect the left arm to reach its lift target in about 2 steps and hold for the remainder. If the red bar is held, it should rise about 0.03 m with the left gripper while the right bar remains elevated. Both grippers will stay closed.

The left opening command dropped from 0.157 to 0 during the lift, and the red bar stayed on the table again. This was a second empty grasp. The value of 0.157 after 4 closure steps did not indicate stable contact; closure was still progressing, and the gripper closed fully during the following 5 lift steps. I need a better grasp strategy for this Snickers bar. Perhaps the fingers are too high to reach its sides. At a link6 height of 0.94 m, I estimate the finger tips at z = 0.782 m, which is 0.017 m above the label surface estimated at z = 0.765 m. In the wrist view, the black finger tips appear near image y = 250 pixels, close to the label, while the bar lies behind or beneath them. The fingers may be passing over the bar during closure. I am unsure exactly where the contact pads sit relative to the tips. The previous successful right-bar grasps used link6 heights of 0.923 m and 0.931 m, with estimated tip heights of 0.765 m and 0.773 m. This left bar might be thinner, or the table might be higher than I estimated. Its triangulated bottom seal is at z = 0.755 m, gold feature at z = 0.775 m, and label center at z = 0.765 m. Even relative to the 0.775 m top estimate, the tips at 0.782 m are 7 mm above it. The pads extend upward, but perhaps effective contact requires the fingers to reach below z = 0.78 m. I could lower link6 to 0.92 m or 0.915 m, giving estimated tip heights of 0.762 m or 0.757 m so the pads can surround the bar. The lateral offset has been corrected, so height now seems to be the main issue; the first miss also used a 0.94 m link6 height. For this third attempt, I want a grasp roughly 0.02 m lower. I’ll choose 0.915 m. With the table likely at z = 0.75 m, the estimated tip height of 0.7574 m leaves about 7 mm of clearance, which seems safe. The bar bottom estimate of 0.755 m is also consistent with a table near 0.75 m. I’ll retain the corrected horizontal center at (-0.253, -0.1465) m and the same closing orientation. I initially considered reopening and lowering the left arm from 0.972 m to 0.915 m over 6 steps, then closing for 6 steps and inspecting before another lift. The previous attempt had 4 closure steps followed by 5 lift steps, 9 steps total, and reached an opening command of 0; a successful contact should stop closure before that. At the lower height, I expect the pads to contact the bar. The right arm is at (0.095, -0.093, 1.036) m and still holds the yellow bar. I’ll move it toward (0.08, -0.04, 1.03) m with the straight-down downA orientation, then tilt it later for placement in the blue basket. I estimate that target distance at 0.053 m, which should be straightforward. I’ll combine this transfer with reopening and lowering the left gripper for 8 steps. The planned left descent is 0.057 m. The left gripper will be commanded open with gripper_closed set to false, and the right will remain closed. Then I’ll inspect the wrist view to check the fingers around the red bar at the lower height; the bar appears unchanged in the head view.

After 8 steps, the left link6 height is 0.923 m rather than the target of 0.915 m. I estimate the finger-tip height at 0.7654 m, which seems low enough. Its measured x coordinate is -0.255 m, slightly different from the target of -0.253 m, and the gripper is open. I am still uncertain about the bar’s image alignment: at this lower height it appears larger, with its center perhaps near wrist-image x = 365 pixels, while the central label may be near x = 340 pixels. With the measured x offset and slightly imperfect orientation, the target might project near x = 318 pixels. The alignment seems acceptable, though I have not checked that projection. I’ll lower the left arm the remaining 0.008 m to a link6 height of 0.915 m, which I expect may take about 2 steps, and keep it open with the exact intended grasp orientation. Meanwhile, the right arm is at (0.085, -0.054, 1.027) m, holding the yellow bar high near the basket front. I considered tilting it forward by 35° at x = 0.075 m, y = -0.04 m, and z = 1.015 m. I’ll instead use the target position (0.08, -0.04, 1.015) m and the approximate wxyz quaternion [0.627, -0.326, 0.326, 0.627]. That requires about 0.02 m of travel and 0.61 rad of rotation. I’ll use 8 steps for the combined action. I expect the left arm to finish its small descent in about 2 steps and then hold open while the right gripper tilts with its grasp maintained. The right tilt may only be partially completed during this call. Afterward, I can close the left gripper while lowering and releasing the right bar. This motion appears safe.

The left arm did not descend farther: its measured link6 height remains 0.923 m despite the target of 0.915 m and 8 executed steps. Was this due to IK behavior or physical contact? The feedback reported no fault. The fingers may be contacting the table or bar and preventing further descent. Perhaps the actual table height is z = 0.765 m, with the finger tips also at about z = 0.765 m. If so, 0.923 m may be the lowest link6 height with the fingers on the table. Closing around the centered bar at this height should work, whereas the previous 0.94 m height may have been too high. The right bar has swung over the blue basket and appears high near image pixel (357, 180). I’ll finish its tilt and lowering before releasing it. For the left arm, I considered using the desired quaternion, but that could cause a slight movement. Holding the measured pose is safest and avoids requesting another descent: position (-0.255, -0.147, 0.923) m and wxyz quaternion [0.651, -0.276, 0.646, 0.287]. I’ll close the left gripper there. For the right arm, I’ll finish the 35° forward tilt from its estimated current tilt of about 20° and lower link6 from 1.018 m toward 1.0 m, targeting (0.078, -0.036, 1.0) m with the planned tilt quaternion. I’ll keep its gripper closed. I’ll use 6 steps for both arms, which should let the left closure settle. I am unsure where its opening command will stop; if the grasp makes contact, I expect about 0.17.

The right opening command is now 0.0, and the yellow bar appears in the blue basket near head-camera pixel (350, 184). The right wrist view shows it below the fingers, apparently inside the basket, while the gripper may have closed empty. Perhaps contact with the basket wall caused it to fall out, or the tilt brought it against the bottom and squeezed it out before I opened the gripper. It seems to be lying at the front-right of the blue basket, with the previously placed red bar farther back. I need to verify containment after withdrawing rather than attempt another grasp if it is already inside. The whole task is not yet successful because objects remain to be sorted. The left opening command is now 0.188 at the lower grasp height, so the red bar is likely secured, but I still need a test lift. The right gripper’s current wxyz quaternion is [0.6, -0.375, 0.376, 0.599], which I estimate as about a 25° tilt, with its fingers in the basket and the yellow bar below them. I considered opening the right gripper and retracting upward and backward to (0.15, -0.12, 1.07) m with the straight-down orientation. Instead, I’ll first open it while holding its current pose for 3 steps, then retract in the next action. At the same time, I’ll test-lift the left bar with its current orientation and the gripper kept closed. I considered a left end-effector height of 0.95 m, a lift of +0.027 m. I’ll use 3 control steps for this opening and test-lift action.

Did the left bar lift successfully this time? In the head view, the red bar appears at pixel (174, 264), compared with its original position near (195, 262), suggesting it shifted left during the grasp and lift. Its size in the wrist view is unchanged, and the opening command is stable at 0.185, so I believe it is held. The yellow bar is lying in the blue basket, with the previously placed red bar visible farther back. Once I place the held red bar, only the brown wooden toy will remain. The right arm should handle that toy after retracting. The left end effector is at (-0.255, -0.147, 0.951) m, and the right arm is free above the blue basket. I need to coordinate their paths so the left bar’s transfer to the blue basket does not collide with the right arm’s approach to the brown toy. One possible right staging pose is (-0.05, -0.16, 1.04) m with the gripper open and pointing straight down. I could first lift the left arm vertically to z = 1.04 m while moving the right arm toward the toy. The toy is near (-0.163, -0.114) m, close to the bar’s original location. A right-arm approach from horizontal position (0.076, -0.033) m to (-0.05, -0.14) m would end about 0.11 m from the toy and 0.2 m from the left arm, which seems safe while the left arm moves only vertically. However, the subsequent motions could interfere. I initially considered a left transfer from x = -0.255 m toward x = -0.29 m, but the blue basket is centered at x = 0 m. A more suitable placement approach is near x = -0.08 m, y = -0.04 m, using a forward tilt to place the bar on the basket’s left side. The path from (-0.255, -0.147) m to (-0.08, -0.04) m passes above the brown toy at (-0.163, -0.114) m. After lifting, I estimate the held bar’s height would be above 0.86 m, compared with the toy’s top near 0.82 m. At an end-effector height of 1.04 m, the finger tips would be near 0.88 m. That should clear the toy, but a right gripper approaching it simultaneously could collide with the left gripper or held bar. I should therefore lift and transfer the left bar away before bringing the right gripper to the toy. The right arm could stage near horizontal position (0.1, -0.2) m. Leaving it above the blue basket would risk collision when the left arm arrives. Another clear staging option is (0.25, -0.15, 1.06) m, but a later right-arm path from x = 0.25 m to x = -0.16 m could cross the blue basket and left arm if executed simultaneously. Approaching the toy from the front may provide better separation in Y. For example, the right arm could stage at (0.05, -0.25, 1.04) m while the left lifts. Yet moving the right arm toward (-0.16, -0.114) m while the left moves toward (-0.08, -0.04) m could bring their paths together near (-0.1, -0.1) m, depending on timing. A better sequence is to transfer the left bar first while the right stages at front-right horizontal position (0.15, -0.25) m. Once the left arm is near the blue basket at y = -0.04 m, the right can approach the toy along a path that stays at y < -0.1 m. For the immediate action, I’ll lift the left arm vertically to z = 1.05 m, a rise of 0.099 m, keeping the bar grasped. I’ll retract the right arm backward and rightward from the blue basket to (0.18, -0.22, 1.06) m with its gripper open and the straight-down quaternion [0.5, -0.5, 0.5, 0.5]. I estimate that move from (0.076, -0.033, 1.006) m at about 0.225 m, within the 0.25 m limit, and the orientation change toward straight down at about 0.6 rad. This path moves away from the left arm. I’ll use 12 control steps; the right arm may only move partway to its staging target, so I’ll inspect its measured progress afterward.

The right arm has not reached its previous target; its measured horizontal position is (0.133, -0.136) m, but it appears clear enough. The left bar remains held and appears vertical in the wrist view. The brown toy is visible near head-camera pixel (240, 237). I’ll transport the left bar toward the blue basket’s left front, initially considering (-0.08, -0.04, 1.03) m. Its current grasp orientation corresponds to a bar angle of about 46°. Has the bar’s world long-axis angle remained the same after closure? It appears vertical in the wrist view, and I think it has. At a placement center of x = -0.08 m, its diagonal length could extend approximately ±0.04 m in X, reaching the border at x = -0.12 m. Rotating to the straight-down downA orientation would turn the bar lengthwise along environment +Y and reduce that sideways extent. I can rotate during the transfer. I initially estimate the orientation change at 0.83 rad; thinking of the change from 46° to 90° as about 43° gives approximately 0.75 rad, within the limit. A target of (-0.08, -0.04, 1.04) m is about 0.201 m away, within the 0.25 m position limit. The left arm’s reach toward the center may be easier than the right arm’s, although that remains uncertain. Alternatively, I could first use (-0.15, -0.08, 1.05) m, about 0.128 m away, with downA, then continue to horizontal position (-0.08, -0.04) m. For the right arm, I considered approaching the brown toy at (-0.163, -0.114, 0.98) m with a suitable grasp orientation. From its current horizontal position, that move is about 0.297 m, exceeding the 0.25 m limit, so it would need a waypoint such as (-0.05, -0.14, 1.02) m, about 0.184 m away. However, that right waypoint and the left waypoint at horizontal position (-0.15, -0.08) m would leave the gripper centers only about 0.118 m apart. The left bar would be lengthwise along +Y and the right gripper open, so roughly 0.1 m separation might be workable, but both arms would be near the toy. I prefer to stage the right arm in front of it at (-0.02, -0.23, 1.04) m, about 0.178 m away. That would provide 0.15 m of Y separation from the left intermediate waypoint. Moving the right arm onward to the toy would require approximately +0.116 m in Y and -0.143 m in X, but its target would then be too close to a left arm still at (-0.15, -0.08) m. I’ll stage the right arm now and defer its toy approach until the left arm has advanced to (-0.08, -0.04) m, tilted, and released the bar. For this immediate action, I’ll target (-0.08, -0.04, 1.04) m for the left arm and (-0.02, -0.23, 1.04) m for the right, both with the downA quaternion [0.5, -0.5, 0.5, 0.5] in wxyz order. I estimate the travel distances at about 0.20 m and 0.178 m respectively. The left path runs from horizontal position (-0.255, -0.147) m toward (-0.08, -0.04) m, while the right runs from (0.133, -0.136) m toward (-0.02, -0.23) m. Could they cross near the center? At their approximate halfway positions, (-0.167, -0.093) m and (0.056, -0.183) m, I estimate about 0.24 m of separation, which appears safe. The left bar would pass above the brown toy near x = -0.163 m, y = -0.093 m, with an estimated bottom height of 0.88 m versus the toy’s top at 0.82 m, leaving 0.06 m clearance. At the right target height of 1.04 m, its open finger tips would also be near 0.88 m and appear clear. I’ll use 15 control steps, keeping the left gripper closed and the right open. If the left IK precheck fails, I’ll adjust the target.

The left arm’s IK precheck had a position error of about 6 mm, close to the tolerance. I’ll use a nearer left target at (-0.10, -0.055, 1.04) m, with an estimated travel distance of 0.178 m, and keep the right staging target unchanged. I expect this revised target to pass the precheck.

In the head-camera view, the arms appear close together or crossed near the center, but I see no collision. The left gripper holds the bar near the brown toy, while the right arm is staged farther forward. I should avoid moving both arms across this area simultaneously. The left arm has approximately 0.095 m remaining to the blue-basket approach point at (-0.1, -0.055) m and an estimated 0.38 rad remaining to the straight-down downA orientation. Should the right arm begin approaching the toy only after the left reaches the blue basket? The left end effector is currently at horizontal position (-0.18, -0.103) m, very close above the brown toy’s estimated position of (-0.163, -0.114) m. The right arm is farther away at its staging position, (-0.02, -0.23) m. I’ll hold it there while moving the left bar away from the toy. I’ll use 10 control steps to move the left arm toward (-0.1, -0.055, 1.04) m with the downA quaternion [0.5, -0.5, 0.5, 0.5], keeping its gripper closed. The right arm will hold its current pose with its gripper open. This should bring the bar lengthwise over the blue basket’s front-left area. I can then tilt it into the basket and release it before approaching the toy with the right arm.

The left end effector is at horizontal position (-0.123, -0.072) m, and the held bar appears high near head-camera pixel (260, 220), at the blue basket’s front-left side. A 35° forward tilt should swing the bar about +0.08 m in Y into the basket. The bar is lengthwise along Y and about 0.03 m wide. With the interior left edge estimated at x = -0.12 m, its current center at x = -0.123 m may be slightly outside. I considered shifting to x = -0.09 m during the tilt. The previous target at (-0.1, -0.055) m was not fully reached in 10 steps, leaving about 0.03 m to go. I’ll instead target the left end effector at (-0.08, -0.04, 1.015) m with the 35° forward-tilt orientation. I estimate the positional distance from its current pose at 0.056 m and the orientation change at 0.61 rad. Will the IK precheck pass? Lowering slightly near the basket may help. I’ll use 10 steps, keeping the left gripper closed and holding the right arm in place with its gripper open. After the tilt, I expect the bar’s center near x = -0.08 m, y = +0.04 m, inside the basket’s left side, ready for release. I considered having the right arm approach the brown toy from its staging pose toward (-0.163, -0.18, 1.0) m while the left moves toward (-0.08, -0.04) m. That right waypoint would still be about 0.066 m in front of the toy. With representative horizontal gripper positions of (-0.1, -0.06) m on the left and (-0.16, -0.18) m on the right, their separation would be about 0.13 m. That might be sufficient, but could the elevated arms collide? The right arm appears to cross near the left arm in the head view, and moving it left toward the toy could bring their bodies too close. I’ll keep the right arm stationary until the bar is released and the left arm has retracted to the left side.

The wrist view shows the held red bar over the left side of the blue basket’s interior. The left end effector is at (-0.08, -0.039, 1.017) m with wxyz quaternion [0.592, -0.387, 0.387, 0.591]. I estimate its current forward tilt at about 26°, compared with the planned 35°. The object’s center may be at y = 0.03 m, inside the basket. I could release now, but I prefer to lower another 0.017 m first. I’ll use 5 control steps to target the left pose at (-0.08, -0.039, 1.0) m with the 35° tilt, keeping its gripper closed and holding the right arm stationary. I considered combining the release with arrival, but I should verify the measured pose first; 5 steps may be enough to reach it. After that check, I plan to release with 3 steps and retract the left arm.

The left gripper is ready to release the bar. Could I use 3 release steps while the right arm begins approaching the brown toy? The left arm is still over the blue basket and will need to retract afterward. The right arm is staged in front at y = -0.23 m, while the toy is near y = -0.114 m. If the right gripper approached a pre-grasp pose at (-0.163, -0.114, 1.0) m while the left remained at horizontal position (-0.078, -0.037) m, I estimate the horizontal separation between the grippers at 0.118 m, with different heights. The grippers might avoid direct contact, but the arms could still be too close. In the head-camera view, the left elbow appears near pixel (280, 150) and the right arm’s base near pixel (340, 200). Moving the right arm leftward and upward in the image might cause it to collide with the left arm. It is safer to hold the right arm until the left has retracted. I’ll open the left gripper for 3 control steps while holding both arm poses and keeping the right gripper open. Then I’ll retract the left arm before approaching the toy.

The released red bar is resting on the left side of the blue basket, so all three chocolate bars are sorted. The brown wooden toy remains near head-camera pixel (240, 237). I need to retract the left arm into clear space before approaching the toy with the right arm. One possible left withdrawal target is (-0.25, -0.15, 1.06) m with the gripper open and the straight-down downA orientation. From its current position of (-0.078, -0.037, 1.006) m, I estimate a travel distance of 0.218 m and an orientation change of 0.61 rad, within the command limits. For the right arm, I am considering a toy pre-grasp position near (-0.163, -0.114, 0.99) m, but I still need to choose the orientation from the toy’s shape. It looks like a carved animal, perhaps with four legs and a head. A grasp across the central body along environment X, or an appropriate diagonal, may work. The current right wrist view from the staging pose seems to show only the table. I am unsure how its forward-and-downward viewing direction relates to the toy’s location. The toy should be 0.116 m ahead along +Y, but it may be outside the left side of the camera’s field of view: the camera is near x = -0.02 m, while the toy is near x = -0.163 m, a leftward offset of 0.143 m. Moving toward x = -0.163 m should bring it into view. A right pre-grasp target of (-0.163, -0.114, 1.0) m with downA would close along environment X. I estimate the distance from its staging position of (-0.02, -0.23, 1.04) m at 0.186 m. However, moving both arms simultaneously could cause a collision near the toy. With the left moving from horizontal position (-0.078, -0.037) m toward (-0.25, -0.15) m and the right moving from (-0.02, -0.23) m toward (-0.163, -0.114) m, their approximate halfway positions would be (-0.164, -0.094) m and (-0.091, -0.172) m. I estimate only 0.108 m of separation, with both end effectors around z = 1.03 m. The grippers could be close, and the arm bodies might collide. I could avoid that simultaneous crossing by first moving the left arm to a front-left waypoint at (-0.20, -0.20, 1.06) m while holding the right arm, then approaching the toy with the right as the left continues toward a farther-left staging pose. Another option is to withdraw the left arm horizontally at y = -0.037 m toward (-0.25, -0.037, 1.06) m. That would move it away from the blue basket but near the white basket. At the end of the right approach, their Y separation would be 0.077 m and their X separation 0.087 m, giving an estimated distance of 0.116 m. That might be adequate for the grippers, but I remain concerned about the arm bodies, so sequential motion is safer. There are 754 control steps remaining. I’ll first retract the left arm to (-0.25, -0.12, 1.06) m with downA and its gripper open, while the right arm holds its staging pose. I’ll use 12 steps. This moves the left arm away from the center before the right approaches. The left path passes above the toy: at approximately x = -0.163 m and y = -0.077 m, it would be 0.037 m away in Y from the toy at y = -0.114 m. I estimate the open finger tips at z = 0.90 m when link6 is at z = 1.06 m, which should avoid contact. The right arm will remain farther forward at y = -0.23 m, and moving the left arm away from it appears to reduce the arm-collision risk. After inspecting the withdrawal, I can approach the brown toy with the right arm.

The left arm has not fully retracted. Its horizontal position is (-0.169, -0.083) m, directly above the brown toy, and its wrist camera now gives a clear view of it. The right arm remains at its staging pose. I can use the left wrist view to localize the toy before continuing the withdrawal. The toy now looks like an owl figurine, possibly with two ear tufts and a wide head at the front. In the left wrist view, I tentatively identify the head near image y = 330, the body center near y = 240, and a tail near y = 140. Is it standing upright, with its height accounting for this appearance? The head-camera view near pixel (239, 237) shows its side. A body grasp across environment X with the straight-down downA orientation seems appropriate. My tentative body-center estimate is (-0.163, -0.114, 0.8) m. The left end effector is at (-0.169, -0.083, 1.032) m and nearly pointing down, while the toy’s center appears near wrist pixel (320, 240). The end effector’s X coordinate is nearly aligned with the toy, but its Y coordinate is offset by about 0.031 m. I still need to identify the base and head positions. I could triangulate the body center using the head and left wrist views. Possible corresponding body-center pixels are (239, 238) in the head view and (320, 238) in the wrist view; a possible head location in the head view is (240, 248). I need to make sure these features correspond. Another reading places the head-camera head or body near (236, 238), while the wrist body center is near (321, 236), the head near (320, 325), and the tail near (343, 156). The body’s top in the head view may be near (238, 228). Because the toy is small in the head image, an alternative is to intersect a wrist-camera ray through its base with the tabletop plane at z = 0.75 m. That requires identifying where the base contacts the table. It seems to have two feet near wrist image y = 340 and a tail near y = 140, but I am unsure of those interpretations. Its body looks vertically elongated in the image, and the apparent head near y = 330 has what may be two ear tufts. If it is an upright owl, the head should be physically highest. Since the camera looks downward and forward, height could make the head appear lower in the image, so the feature at the image bottom may actually be the toy’s top. I still cannot distinguish the base from the apparent tail confidently. The head in the head-camera view may instead be near (239, 232). I’ll create enlarged head-camera and left wrist crops with coordinate grids, then inspect them to clarify the toy’s shape and feature locations.

I’ll inspect the enlarged head-camera and left wrist crops of the remaining brown wooden toy to clarify its shape and identify corresponding features. This should help refine its position and choose a suitable grasp point and finger alignment.

The owl’s head, with two ear tufts, appears near the bottom of the left wrist image, and its large body is near the center. In the head-camera view, the head may be near (239, 224) pixels and the feet or base near (239, 251). A possible head correspondence is wrist-image y = 335 with head-camera pixel (239, 223). The body center near wrist pixel (320, 245) may correspond to head-camera pixel (235, 236). I should triangulate the body and head to refine their positions. The gripper may partly occlude the toy’s right side in the head view, but its left side is visible. I am considering a body-center correspondence of head-camera pixel (233, 235) and wrist pixel (320, 240); what height will that give? Other tentative correspondences are the head at (238, 222) in the head view and (320, 335) in the wrist view, and the base at (237, 253) in the head view and (345, 155) in the wrist view. Why would the base appear at the bottom of the head view but at the top of the wrist view? Could the owl be lying down rather than standing? The head-camera geometry supports an upright interpretation. The rounded head appears near (239, 221), with the body extending down toward image y = 251. Greater height moves a point upward in this view, so the head at y = 221 and base at y = 251 are consistent with the owl standing. The wrist camera gives the opposite vertical projection: its height is approximately z = 0.947 m, while I estimate the owl’s head at z = 0.84 m and base at z = 0.75 m. For points with the same horizontal coordinates, the downward-facing camera’s optical Y direction is approximately (0, -0.866, 0.5) in the environment frame. Increasing z therefore increases optical Y and moves the point downward in the image. That explains why the higher head appears near wrist-image y = 335. The apparent tail near y = 150 could be the base, though I am still unsure whether it marks the base center. The roughly 180-pixel vertical extent could result from a 0.09 m height viewed at close range. I therefore think the owl is standing, with its base low in the head view and high in the wrist view. I should grasp the body around mid-height, approximately z = 0.79–0.81 m, closing along environment X at its world center. Link6 should be 0.1576 m above the finger tip. To contact the body around z = 0.80 m, a link6 height of 0.95 m would put the tip near z = 0.792 m, similar to the pepper grasp. Another estimate is an owl height of 0.09 m, with its head at z = 0.85 m and base at z = 0.75 m. A body grasp around z = 0.80–0.82 m should be stable and avoid the head; link6 at 0.96 m would put the tips near z = 0.802 m. The horizontal grasp center should be near the estimated base position (-0.163, -0.114) m. That earlier estimate came from head-camera pixel (240, 239) at an assumed z = 0.80 m. The head and base should have approximately the same horizontal coordinates, but stereo triangulation should refine the body’s position. I’ll calculate several candidate correspondences. Besides the body estimate at head pixel (233, 235) and wrist pixel (320, 240), I am considering the head at (239, 222) and (320, 330), the base at (239, 252) and (343, 150), and the body at (234, 235) and (320, 245), respectively. The feature near wrist pixel (343, 150) may not be the base center, so these matches remain tentative.

The triangulated body position near (-0.17, -0.11, 0.805) m and head position near (-0.163, -0.111, 0.853) m look coherent. The base height estimate of about 0.733 m seems inconsistent with the likely tabletop height of 0.75 m. I could grasp the body at horizontal position (-0.17, -0.11) m, using a link6 height of 0.96 m and the straight-down downA orientation to close along environment X. The body might be about 0.05 m wide. The left wing is near x = -0.183 m and the right side perhaps near x = -0.15 m, suggesting a width of 0.033 m, or about 0.06 m including the wings. The estimated open-gripper width of 0.085 m should accommodate it. I would aim for contact around the body height of 0.805 m. The left arm needs to retract farther before the right approaches, to avoid a collision. I considered moving it from (-0.169, -0.083, 1.032) m to (-0.30, -0.14, 1.06) m with downA for 12 steps while holding the right arm. That leftward and backward path appears clear. Afterward, the right arm could approach a pre-grasp height of 0.99 m and then descend to 0.96 m. I considered combining the left withdrawal with the right approach to 0.99 m, but the left arm starts directly above the owl, and both motions could converge near it. I’ll keep the motions separate. Another possibility was a 10-step left withdrawal, perhaps reaching x = -0.25 m, followed by the right approach while the left continued farther away. For this action, I’ll instead use 12 steps to target the left arm at (-0.32, -0.15, 1.07) m with downA and its gripper open, while holding the right arm at its current open-gripper pose. I estimate the left travel distance at 0.165 m, and the path appears safe.

The left arm is clear, so I’ll move the open right gripper to a pre-grasp pose above the owl’s body at (-0.17, -0.11, 0.995) m, using the straight-down downA quaternion [0.5, -0.5, 0.5, 0.5]. I estimate the target distance at 0.199 m, with position changes of (-0.15, +0.12, -0.045) m, below the 0.25 m command limit. I’ll use 15 control steps. I could move the left arm to a more distant staging pose near the start at (-0.30, -0.30, 1.05) m, perhaps with its initial orientation, since a final reset is still needed later. However, its current pose appears clear enough to hold. Its horizontal position is (-0.32, -0.15) m, about 0.15 m from the owl. With both open grippers estimated to have a 0.085 m gap along X, I tentatively estimate their finger-edge separation at 0.107 m, which seems sufficient to avoid interference. In the head view, the left arm is near the white basket and the right arm is nearer the center. I’ll hold the left arm at its current pose with the gripper open while the right approaches.

Reaching far to the left with the right gripper pointing straight down appears difficult, so I need a closer intermediate pose with smaller changes in X and Y. The right end effector is currently at (-0.02, -0.23, 1.04) m. I’ll target (-0.10, -0.16, 1.02) m, estimating the travel distance at 0.114 m; this is likely to pass the local IK precheck. I’m considering 15 control steps for that move. Afterward, I can continue toward the owl’s pre-grasp pose at (-0.17, -0.11, 0.995) m, an estimated further move of about 0.09 m.

Even the closer target failed the IK precheck, with a position error of about 21 mm. The right arm may be near joint limits in its current configuration, making leftward motion with the gripper pointing straight down difficult. I may need a smaller movement or a different orientation. The right end effector is currently at (-0.02, -0.23, 1.04) m, after moving from x = 0.3 m to a negative X coordinate. I suspect its joints may be near their limits, so I’ll read the current joint values before choosing the next motion.

The right arm’s measured joint 1 angle is 0.9695 rad, and joint 6 is at 0.9698 rad. Moving left to x = -0.1 m might require joint 1 to reach about 1.2 rad; would that be within its limit? Perhaps the limit is around 1.0 rad, although the ARX X5 joint 1 range could be ±1.57 rad. The precheck’s position error of about 21 mm might indicate a target beyond that limit. With the right end effector currently at x = -0.02 m and its base at x = 0.3 m, reaching the owl at x = -0.17 m might require joint 1 to reach about 1.4 rad, near 1.57 rad but possibly still reachable. Joint 6 is also approximately equal to joint 1, perhaps because of yaw coupling in the top-down orientation. I do not know the required joint 6 angle at the target; it might exceed 1.2 rad. The local IK failure may be due to the size of the requested change. A smaller target at (-0.05, -0.21, 1.035) m, with an estimated travel distance of 0.036 m, should pass, and I could increment X and Y slowly. Alternatively, I could use a sideways or tilted gripper orientation to reduce the joint 6 requirement, approach the owl, and then rotate downward near it. Tilting might redistribute motion between joints 4 and 6 rather than keeping joint 6 coupled to joint 1. Smaller waypoints seem easiest, and 730 control steps remain. I’ll try the right target (-0.055, -0.205, 1.035) m, estimating this short move at 0.047 m, while holding the left arm in place. I’ll keep both grippers open and retain their current orientations for 8 control steps.

The small right-arm waypoint worked. I’ll next target (-0.10, -0.17, 1.015) m, estimating a travel distance of 0.064 m; this may pass the IK precheck. After that, I could continue to (-0.15, -0.125, 0.99) m. I considered using 8 control steps for each waypoint or trying a larger 0.08 m move. For now, I’ll use 10 steps toward (-0.10, -0.17, 1.015) m.

I’ll reduce the right arm’s next movement to roughly 0.05 m after the failed precheck. I’ll try the target position (-0.085, -0.18, 1.02) m, estimating a travel distance of 0.043 m, and use 8 control steps.

The owl appears partly cropped at the top-left of the right wrist view. I considered moving the right end effector to (-0.125, -0.15, 0.995) m, an estimated move of 0.057 m, but I am unsure whether that would pass the IK precheck. The previous small move of about 0.043 m passed, so I’ll choose the closer target (-0.115, -0.155, 1.005) m, estimating a travel distance of 0.047 m, for 8 control steps. A later move to the final grasp pose at (-0.17, -0.11, 0.96) m, estimated at 0.075 m, might fail the precheck. I could first use an intermediate pose at (-0.15, -0.125, 0.98) m and continue in roughly 0.05 m increments. The right end effector is currently at x = -0.081 m, y = -0.183 m, while the owl’s estimated horizontal position is (-0.17, -0.11) m. The relative horizontal offset is (-0.089, +0.073) m, consistent with the owl appearing to the left in the wrist view. The immediate target shifts the gripper by -0.034 m in X and +0.028 m in Y to (-0.115, -0.155) m. I’ll proceed with 8 control steps.

Even the move estimated at 0.047 m failed the IK precheck, with about 27 mm of position error. The right arm may be approaching a reach or joint limit as it moves farther into negative X and forward in Y. Perhaps I should change its orientation or use the left arm for the owl after all. A joint 1 limit might prevent the right arm from reaching the owl with a top-down grasp, whereas the left arm can grasp it easily. If I use the left arm, I still need to get the owl into the red basket. I could pick it up with the left arm, carry it toward the middle or front, and hand it off to the right arm. Another option is to carry it directly to the right basket with an extended reach and a tilted gripper, but reaching across to x = +0.28 m may be too far for the left arm. A stretched diagonal reach with a sideways gripper orientation would probably also be too far. A more feasible fallback may be to use the left arm to place the owl temporarily on the table near the right arm, for example at horizontal coordinates (0, -0.2) m, then have the right arm grasp it and place it in the red basket. The final requirement is to put the wooden toy in the right basket; an intermediate table placement is allowed. This would add steps but seems feasible. Before switching arms, I should explore whether a different right-gripper orientation would allow the reach. The right end effector is currently at (-0.081, -0.183, 1.018) m with the downA orientation. What is its current joint 1 angle? I’ll read the current joint values before deciding.

The right arm’s measured joint angles are q2 = 2.4898 rad, q3 = 2.6254 rad, and q4 = -1.7055 rad. Perhaps joint 3 has a maximum near 2.7 rad. Moving forward and left increases extension, so q3 may be approaching that limit. Could lowering the end effector substantially improve the reach? Its current height is 1.018 m, and the rejected target was at 1.005 m, a descent of 0.013 m combined with +0.028 m in Y and -0.034 m in X. Joint 3 is already around 2.625 rad. Lowering toward 0.96 m might reduce the required q3 angle, although I am unsure whether lowering during a forward, top-down reach increases or decreases arm flexion. Lowering helped with an earlier basket target. A target at (-0.115, -0.155, 0.96) m would descend 0.058 m and might pass the IK check, but the estimated finger-tip height would be 0.802 m, near the owl’s head at about 0.85 m. The gripper is still off-center by roughly 0.07 m, so its open fingers could hit the head during descent. I should not descend until centered. I could instead tilt the gripper toward the owl, extending the fingers without requiring link6 to reach directly above it. The current right end-effector position is (-0.081, -0.183, 1.018) m, and the owl is near horizontal position (-0.17, -0.11) m, left and forward rather than simply along +Y. An angled grasp could point local +X diagonally left and forward toward the body. The vector from the end effector to the estimated body point is (-0.089, +0.073, -0.213) m, where the vertical component is 0.805 - 1.018 m. Its estimated length is 0.248 m, nearly within the 0.25 m target bound. With fingers about 0.157 m long, pointing along that vector would place their tips near (-0.137, -0.137, 0.883) m, still above and left of the body. The body is 0.248 m away, so I would still need to move closer. Could the finger and camera geometry help here? The gripper’s farthest extent is about 0.157 m, so I estimate that link6 needs to be within about 0.18 m of the grasp point. A further move of about 0.05 m would still be needed. Tilting might nevertheless reduce the required forward movement and improve the joint 3 configuration. A top-down grasp is preferable for the owl, but an angle up to about 30° may be acceptable. A fallback is to pick up the owl with the left arm and transfer it to a position the right arm can reach. The left arm is already near the owl and can reach it. I could place it temporarily on the table at the center-front position (0, -0.25) m, retract the left arm, and have the right arm pick it up there and place it in the red basket. Only the final sorting location is required, so an intermediate table placement is acceptable. There are 714 control steps remaining, which should be enough. Carrying it directly with the left arm from its base near x = -0.3 m to the red basket near x = +0.28 m would be a long reach; a handoff or intermediate placement seems safer. Placing it in the middle blue basket would not satisfy the task. I could also hold the owl at the center-front position with the left arm and grasp it directly with the right, avoiding a set-down. However, using both arms on one object is discouraged unless necessary, and a handoff would be risky. An intermediate supported placement seems more robust. Before switching arms, I want to assess whether a tilted right-gripper orientation can solve the reach. One possibility is to keep the current X and Y coordinates, lower toward z = 0.98 m, and tilt toward the owl. The owl is offset 0.089 m left and 0.073 m forward. A finger direction with horizontal components around (-0.06, +0.05) and a downward component would shift the tips toward it. I could define local X as the normalized vector (-0.5, 0.5, -1), giving about a 35° tilt toward the left-front, and choose local Y perpendicular to the horizontal approach, perhaps (0.707, 0.707, 0). I still need to decide how best to keep the pads across the owl’s body width. For a 30° alternative, I could use local X direction d = (-0.35, 0.35, -0.866). I considered projecting an environment-X closing direction perpendicular to d, or choosing a direction roughly along environment Y. With horizontal approach h = (-0.707, 0.707), a natural perpendicular closing direction is c = (0.707, 0.707, 0), closing diagonally along X + Y. That might contact the body sides adequately. A rotation matrix with columns d, c, and d × c is a valid orientation. Its distance from the current downA orientation might be about 1.1 rad; I would need to calculate it. A tilted target near (-0.11, -0.155, 1.005) m might be easier for IK than the same position with the unchanged orientation. I could first tilt at the current position, then translate. Would rotating the open fingers there hit the owl’s head? Link6 is at z = 1.018 m, with the tips initially near z = 0.860 m and the head near z = 0.853 m, leaving about 7 mm of vertical clearance. Tilting would shift the tips horizontally toward the owl and raise them to around z = 0.882 m. That appears safe and may improve the view, but the angled grasp would be more complicated. A simpler alternative is to change only the top-down yaw. I considered a downA alternative with local Y along +X rather than -X, using a quaternion such as [-0.5, 0.5, -0.5, -0.5] in wxyz order. That would effectively change yaw by 180° while retaining the same closing axis, but could require a π change in wrist joint 6 and exceed its range. Changing to the other horizontal closing axis may be more useful. The down_yaw90 quaternion [0.707, 0, 0.707, 0] keeps local X downward and maps local Y to environment +Y. The owl’s standing body seems roughly symmetric, so closing along Y may also work. This yaw change would alter joint 6 relative to the arm. Joint 1 and joint 6 are currently both near 0.96 rad with downA. With the alternative yaw, joint 6 might become joint 1 plus or minus π/2; one possibility is 0.96 - 1.57 = -0.61 rad, farther from a limit, while joint 4 also changes. That could improve IK while preserving a top-down grasp. I estimate the owl’s front-to-back thickness and width at about 0.05 m each, so either horizontal closing axis seems plausible. I’ll try rotating the open right gripper at its current position toward the more precise down_yaw90 quaternion [0.70710678, 0, 0.70710678, 0]. The earlier calculation maps local X to -Z, local Y to +Y, and local Z to +X. Its orientation distance from downA is π/2, or 1.571 rad, exceeding the 1 rad command limit, so I need an intermediate yaw. DownA’s closing direction is -X, with an angle of 180°, and the desired +Y closing direction has an angle of 90°. The shortest change is therefore -90°. I can first use a closing direction at 135°, approximately (-0.707, +0.707, 0), requiring a 45° yaw change and an orientation distance of 0.785 rad. The earlier bar quaternion [0.666, -0.237, 0.666, 0.237] used closing direction (-0.631, 0.776), at about 129°, so it is not exactly this intermediate orientation. For 135°, I expect a quaternion near [0.6533, -0.2706, 0.6533, 0.2706], but I should check it. A second rotation can then complete the move to the 90° closing direction. This yaw rotation would sweep the open fingers horizontally around link6 without changing their estimated tip height of 0.860 m. The owl’s head is near z = 0.853 m, and its horizontal distance from the gripper is about 0.116 m. The open fingers are offset about ±0.04 m along the closing direction. Rotation might bring one finger closer, but the 0.116 m separation is greater than 0.06 m, so it appears safe. I can then retry the approach with the new yaw. Joint 2 and joint 3 may still be near limits because of the reach itself, rather than just wrist orientation. Changing orientation might allow a different elbow solution or change joint 4, although the local IK search starts from the same joint configuration and may remain on the same branch. It is worth testing before switching to the left-arm transfer plan. I’ll use SciPy to calculate the top-down quaternions for closing direction c = (0, 1, 0) and the intermediate direction c = (-0.707, 0.707, 0). I expect the final quaternion near [0.7071, 0, 0.7071, 0] and the intermediate near [0.65328148, -0.27059805, 0.65328148, 0.27059805], in wxyz order.

I’ll rotate the open right gripper to the calculated intermediate orientation at its current position, while holding the left arm stationary, for 8 control steps. After that, I may complete the rotation to the final orientation with a 90° closing-direction angle and retry the approach to the owl.

The right gripper has only partially completed the rotation. I estimate its current yaw at about 22°; going directly to the final 90° orientation would require a 68° change, or about 1.19 rad, exceeding the 1 rad command limit. I should first finish the intermediate orientation with a 135° closing-direction angle, estimating about 0.6 rad remaining, then make the approximately 0.785 rad change to the final orientation. I could combine the intermediate rotation with a small approach toward the owl, since the changed orientation might improve the IK solution. For now, I’ll keep the right gripper at its current position and continue toward the intermediate orientation for 8 control steps, with both grippers open and the left arm held stationary. Afterward, I may complete the final rotation and retry the owl approach.

The right gripper is now near the intermediate orientation with a 135° closing-direction angle. I’ll try the final 90° closing-direction orientation while moving to (-0.115, -0.155, 1.005) m toward the owl. I estimate the orientation change at 0.785 rad and the positional move at 0.047 m. The new orientation may let the IK precheck pass; if it fails, neither arm will move. I’ll use 10 control steps, keeping both grippers open and holding the left arm stationary.

The latest precheck still has a position error of about 27.6 mm, suggesting that changing the orientation has not helped with this target. The right arm’s reach may be the limiting factor, or the solver may be stopping at a joint 3 limit. I could first complete the 90° closing-direction orientation at the current position and then try a smaller move. Lowering the target to z = 0.96 m might also help. There are 698 control steps remaining, but switching to a left-arm pickup and an intermediate table placement seems more reliable. The right arm’s joint angles are approximately q2 = 2.49 rad, q3 = 2.625 rad, and q4 = -1.705 rad at link6 position (-0.081, -0.183, 1.018) m. Is the arm extremely folded, with joint 3 near its maximum? A further forward-left move of about 0.047 m might require q3 to exceed 2.7 rad. Changing wrist yaw may not substantially change the shoulder and elbow requirements for the link6 position. I am considering whether the elbow configuration is determined solely by that position, since link6 is at the wrist end and the arm’s length to it is fixed. If the link6 target is beyond the arm’s reach, orientation alone would not fix it, although lowering could change the reach requirement. I am still uncertain about the base location and geometry. If the right base is near (0.3, -0.35) m horizontally, the target above the owl at (-0.17, -0.11, 0.995) m may be about 0.53 m from it, perhaps near maximum reach. I estimate the current right position to be about 0.46 m from the base, but joint 3 may be near its limit because of the height. The base might instead be near (0.3, -0.15, 0.95) m. The right arm started at (0.3, -0.352, 0.922) m with zero joint angles; I am unsure how that corresponds to its arm configuration. Another option is to move the right arm back and around, perhaps through a lower pose with its initial orientation, to approach on a different joint branch. The local IK search may remain on the current branch, however. I’ll use the left arm to pick up the owl and place it temporarily where the right arm can reach it. The right arm can retreat toward a receiving area near horizontal coordinates (0.05, -0.25) m or (0.1, -0.25) m while the left approaches the owl. The left arm is currently at (-0.32, -0.15, 1.07) m. I considered moving it directly to (-0.17, -0.11, 0.96) m with the straight-down quaternion [0.5, -0.5, 0.5, 0.5] and its gripper open, estimating the distance at 0.156 m and expecting its IK check to pass. I also considered a right retreat target of (0.10, -0.25, 1.02) m with the same quaternion and an open gripper. I estimate that move at about 0.19 m and the change from the intermediate 135° closing-direction orientation to straight down at about 0.785 rad. Moving the right arm backward and rightward should reduce its reach requirement. These paths appear to separate the arms: the left moves toward the owl while the right moves away. After grasping, the left arm could carry the owl to a front-center table staging point at (0, -0.26) m horizontally. From the owl’s estimated horizontal position of (-0.17, -0.11) m, I estimate that transfer at 0.226 m before accounting for height. A right receiving position near (0.05, -0.25) m would be close. I could set the owl down at (0, -0.25) m, retract the left arm, and let the right grasp it and carry it to the red basket. The temporary placement needs to leave the owl upright with its base supported. Another candidate is horizontal position (0, -0.24) m with link6 at z = 0.96 m. If the body is held at z = 0.805 m with link6 at 0.96 m, its relative vertical offset is -0.155 m. Returning the body to 0.805 m should put the base back at its original height on a table at z = 0.75 m. I would gently set it down and ensure support before opening. The right arm could then grasp it with either the straight-down orientation or the 90° closing-direction orientation. The front-center table area at x = 0 m, y = -0.25 m appears clear; the middle yellow bar originally lay near y = -0.119 m. Both arms started near y = -0.35 m, and I expect both can reach this staging area without disturbing the sorted baskets. For the immediate action, I’ll stop the right-arm approach and move the left open gripper to the higher pre-grasp pose (-0.17, -0.11, 0.995) m. I’ll retreat the right open gripper to (0.10, -0.25, 1.04) m. Both will use quaternion [0.5, -0.5, 0.5, 0.5]. I estimate the left travel distance at 0.156 m and the right at about 0.19 m, and expect both prechecks may pass. I’ll use 15 control steps. The left approach remains above the owl, while the right rotates back toward straight down and moves backward and rightward. After inspecting the result, I can lower the left arm toward z = 0.96 m and close around the owl’s body while the right waits.

The left gripper has reached a clear pre-grasp pose above the owl. The right arm has not reached its staging target at (0.1, -0.25) m. Did it move in the wrong direction? Its measured horizontal position is now (-0.006, -0.208) m, compared with the previous (-0.081, -0.183) m, so it moved +0.075 m in X and -0.025 m in Y. That is progress toward the target, just incomplete, and its orientation is still intermediate. It can continue retreating. The left end-effector height is 0.995 m, putting the finger tips at approximately 0.837 m. The owl’s estimated body height is 0.805 m and its head height is 0.853 m. The open tips may be near the head, but the body is lower. I’ll descend toward a link6 height of 0.955 m, with an estimated tip height of 0.797 m, to reach the body while maintaining the straight-down orientation. I considered 4 steps for the left descent and inspection, or 8 steps to let the right retreat progress while the left reaches its target and holds. However, the grasping instructions require 1–3 steps per action. I also considered holding the right arm during the descent, but it can safely continue moving away at the same time. I’ll use 3 steps with both grippers open, then inspect and continue in another short action if needed. The right target remains (0.1, -0.25, 1.04) m with the straight-down orientation; I estimate about 0.45 rad of rotation and 0.115 m of travel remaining, so this call will likely move it only partway.

The left end effector is at z = 0.96 m, with an estimated finger-tip height of 0.802 m, which looks suitable for grasping the owl’s body. The body appears about 200 pixels wide in the wrist view, with the open fingers at x = 0–125 pixels and x = 515 pixels onward. I estimate the physical opening at 0.085 m and the owl’s width at perhaps 0.055 m. I am still slightly uncertain about horizontal centering. The body initially looks centered near x = 360 pixels rather than the gripper’s x = 320 pixels. In obs_000420, I estimate its left and right edges at x = 230 and 450 pixels, giving a center near x = 340 pixels; the circular emblem may also be near x = 340 pixels. The target x = -0.17 m came from stereo localization, and the measured end-effector x is also -0.17 m. With no camera offset in X, the estimated body point (-0.1706, -0.1075, 0.806) m would likely project near x = 318 pixels, though I have not calculated that projection. I could check it, but the alignment seems adequate, with perhaps only a 0.005 m offset. The open fingers appear to straddle the body. Closing along environment X at this height should contact the body around its middle, below the head, and provide a stable grasp. I’ll close the left gripper in place for 3 control steps while the open right gripper continues retreating toward its staging position at x = 0.1 m, y = -0.25 m.

The left fingers are contacting the owl’s wings or body sides, and the opening command is 0.358 after 3 closure steps. The owl’s body is wide, so the command may settle around 0.3. I’ll continue closing the left gripper in place for another 3 control steps while the right arm continues moving clear.

The left gripper’s opening command is stable at 0.359, and it may have a secure grasp around the owl’s wings. I’ll test-lift it to a link6 height of 0.99 m using 2 control steps to confirm the grasp. The right arm is nearly at its staging position: its measured horizontal coordinates are (0.064, -0.235) m, compared with the target of (0.1, -0.25) m. I’ll let it continue that small remaining move during the same 2-step action.

The owl appears to follow the left gripper, although the head-camera change is small and uncertain. Did its image y coordinate change from 236 to 240 pixels? Its current head-camera position may be near (237, 237) pixels, perhaps almost unchanged. Its wrist-image scale is similar and the opening command is stable. The feet appear near head-image y = 253 pixels rather than the earlier 256 pixels, which may indicate that the base has risen. I think it is likely held. I should lift vertically to a link6 height of 1.06 m before transporting it horizontally toward the front-center table area. I initially considered 8 steps toward the left pose (-0.17, -0.111, 1.06) m, then a transfer toward (0, -0.25, 1.02) m, estimated at about 0.22 m and within the command limit. The right arm is essentially near its previous waiting target of (0.1, -0.25, 1.04) m, but its measured horizontal position is (0.083, -0.243) m. That puts it about 0.083 m from the planned temporary placement point at (0, -0.25) m, leaving the grippers too close. I’ll move the right arm farther right to (0.25, -0.25, 1.04) m while lifting the owl. I estimate that retreat at 0.167 m, and its rightward path appears safe. For this action, I’ll use 10 steps, keep the left gripper closed and the right open, and use the straight-down quaternion [0.5, -0.5, 0.5, 0.5] for both arms. Then I can transport and temporarily place the owl at (0, -0.25) m while the right arm holds clear. After the left arm retracts, the right can approach from x = 0.25 m.

The owl is held stably around its body. Its head looks as though it is dangling downward, although the owl is actually upright, and I am uncertain about the base’s apparent height. With the left link6 at z = 1.06 m, I estimate the finger tips at z = 0.902 m and the body at z = 0.905 m. The object’s bottom might be at z = 0.78 m, or its base perhaps at z = 0.80 m; it appears clear of the table. I considered transporting it to (0, -0.25, 1.02) m, estimating a travel distance of 0.229 m, while holding the right arm at (0.218, -0.251, 1.041) m. That left target is within the 0.25 m limit, but it might narrowly fail the IK precheck. I’ll instead use the closer pre-placement target (-0.02, -0.25, 1.03) m, with an estimated distance of 0.211 m. The slightly left-of-center location should be easier for the left arm and still reachable by the right arm. The table area at x = -0.02 m, y = -0.25 m appears clear. After transport, I plan to lower link6 to z = 0.96 m, placing the body near z = 0.805 m for a stable set-down on its base. The right arm at x = 0.218 m is about 0.238 m away from this placement location, which appears to leave sufficient clearance. The left path runs from horizontal coordinates (-0.17, -0.111) m to (-0.02, -0.25) m, in front of the blue basket. I estimate the owl’s base near z = 0.80 m at the start of the horizontal motion, with link6 at z = 1.06 m. The basket rim may be at z = 0.83 m and its front at y = -0.02 m, but the planned Y motion moves away from that front edge, so it does not cross the basket. The path may pass over the table area where the middle bar was removed, which is now clear. I’ll use 15 control steps, maintaining the left grasp and orientation while holding the right arm stationary with its gripper open.

I’ll lower the owl to set its base on the table. At the original grasp, the left end-effector height was 0.96 m and the owl’s base was on the table. The opening command is now 0.346 rather than 0.356, suggesting slight compression during transport. The owl’s orientation has remained unchanged with the gripper pointing down, so I expect its base to retain the same position relative to the end effector. Returning the end-effector height to 0.96 m should put the base at the original estimated table height of z = 0.75 m. I’ll lower slowly for 3 control steps toward a target height of 0.955 m, keeping the left gripper closed and holding the right arm in place. From the current height of 1.03 m, I’m considering a descent of about 0.07 m. I expect the first 3 steps to produce about 0.04 m of actual descent, reaching roughly 0.99 m, with another 3 steps afterward bringing it toward 0.955 m. I’ll execute the first 3 steps now.

I’ll continue lowering the left end effector toward a height of 0.96 m for another 3 control steps.

The left end-effector height is 0.964 m, and its opening command has increased from 0.349 to 0.401. The owl appears slightly tilted in the wrist view, with its right wing raised. Contact with the table may have caused it to shift or rotate against the fingers. Its base appears near head-camera pixel (310, 323), possibly on the table. Since the current end-effector height of 0.964 m is close to the original grasp height of 0.96 m, the base should be near the table, but I still need to verify its support. I am unsure why the opening command increased while the gripper remained commanded closed. Could the owl have moved or expanded between the fingers? The observation reports the controller’s latest interpolated opening command, not a measured finger gap, so I cannot directly interpret this as the owl pushing the fingers apart. Perhaps interpolation or dynamics explains the change, or it reflects the owl rotating against the fingers; this remains unresolved. I considered releasing at the current pose or lowering another 0.004 m. Another option is to lower toward 0.955 m for 2 steps and then open. However, if the base is already on the table, further downward pressure could topple the owl. It is likely supported, so I’ll open the left gripper now for 3 control steps while holding both arms at their current poses and keeping the right gripper open. Then I’ll check whether the owl remains stable.

The brown wooden toy is an elephant with a saddle on its body, rather than the owl I previously identified. It initially stood on four legs, but it toppled onto its side after release and is now lying in the front-center area. The task does not specify an orientation for container placement, so resting on its side in the right basket is acceptable, and this intermediate placement is also acceptable. The right basket already contains the white wooden toy. Grasping the elephant across its body from this position may be easier than grasping it upright. I need to localize its new position and choose a closing direction across a suitable narrow part of the body. In the left wrist view, its body appears near pixel (300, 220), its head near (190, 340), and its legs to the right. Its head-to-body axis runs roughly from lower left to upper right in that image. The left gripper mostly occludes it in the head-camera view, so withdrawing should give me a clearer view. I could triangulate corresponding features using the current left wrist calibration and the head view, or inspect the head view after withdrawal. Its world position may be around (-0.03, -0.26) m horizontally, but I need to verify that. I considered retracting the open left gripper to (-0.25, -0.20, 1.06) m with the straight-down downA orientation while holding the right arm, then approaching the elephant with the right gripper. Another withdrawal target is (-0.20, -0.22, 1.06) m, with an estimated travel distance of 0.21 m, using 12 steps and keeping the right arm at its current x coordinate of 0.218 m. However, the left gripper is currently open around the body at z = 0.964 m, with estimated finger-tip height z = 0.806 m, while the elephant’s lying height may be about 0.80 m. Moving horizontally now could push it. I’ll first lift the open left gripper vertically to z = 1.05 m for 8 steps while holding the right arm stationary, then retract. With the fingers separated, this vertical withdrawal appears safe and should avoid knocking the elephant.

The elephant appears to be lying compactly near head-camera pixel (315, 280), with its legs visible. I should retract the left arm to (-0.25, -0.20, 1.06) m, then perhaps approach with the right arm near horizontal coordinates (0.02, -0.26) m. I need to refine the elephant’s world position first. If its body center is at pixel (315, 280) and its height is about z = 0.78 m, its horizontal position might be near x = -0.015 m, y = -0.19 m. However, the original handoff target was at y = -0.25 m. What image coordinates would that target produce at z = 0.8 m? I’ll project the world point (-0.02, -0.25, 0.8) m into the head-camera view to check this discrepancy.

The elephant appears near head-camera image y = 280 pixels rather than the projected y = 311 pixels, so its actual environment Y coordinate may be closer to -0.20 m than -0.25 m, or its height may be greater than assumed. Did its body shift forward or backward when it toppled? In obs_000470, I initially identified a visible part near pixel (315, 280), perhaps its feet. The original set-down target had environment y = -0.25 m, with the base projected near image y = 312 pixels. I estimated the base near image y = 323 pixels in obs_000459 and y = 320 pixels after release in obs_000462. On reconsideration, the tan feature in obs_000470 may be near pixel (313, 280), beneath the gripper fingers at image y = 270 pixels. It could be the elephant’s body, with the base occluded behind the fingers near image y = 300 pixels. A full head-camera crop could help, but the left gripper still obstructs the view. I’ll retract the open left gripper to (-0.25, -0.20, 1.06) m for 12 control steps while the right arm waits. Then I’ll inspect the head-camera view to localize the elephant before the right-arm approach.

The elephant appears near head-camera pixel (310, 278), lying on its side. Is its long axis roughly horizontal in the image? It looks compact, with its feet to the right and trunk to the left. I need to estimate its world position. Its image center may be near (309, 278), and the top of its body may be at z = 0.78 m. Using a plane at that height, I tentatively estimate world x ≈ -0.019 m, but the Y coordinate is still unknown. I’ll use the camera calibration to calculate the position.

The right arm has moved only partway toward its target, and the elephant appears at the left edge of the right wrist view. I’ll continue toward the intermediate position (0.08, -0.21, 1.02) m and the orientation with a 135° closing-direction angle for 12 control steps; it may reach that pose during this call. Afterward, I plan to move toward (-0.02, -0.19, 0.99) m with the final 90° closing-direction orientation. I considered commanding that final pose directly from the current pose. I estimate the positional distance at 0.192 m, but the orientation change may be about 1.2 rad. The current wxyz quaternion is [0.577, -0.408, 0.578, 0.408], which I estimate corresponds to about 22° of yaw progress. The remaining 68° change is about 1.19 rad, exceeding the 1 rad command limit. I should therefore reach the intermediate orientation first, then command the final orientation. For this action, I’ll keep both grippers open and hold the left arm stationary.

The elephant may be lying on its back: all four foot soles and the trunk are visible, with the saddle underneath. It appears stable. Its body center is near pixel (110, 280) in the right wrist view, while the gripper’s horizontal center is at x = 320 pixels. I’ll move the right end effector approximately 0.112 m left and 0.023 m forward toward the object, targeting (-0.02, -0.19, 0.99) m. I’ll also finish rotating from the intermediate 135° closing-direction orientation to the final 90° closing-direction orientation. I estimate the orientation change at 0.785 rad and the positional distance at 0.117 m. This should center the gripper over the body. I’ll use 12 control steps with the grippers open, hold the left arm stationary, and inspect the alignment afterward.

The right end effector is at (0.02, -0.198, 0.999) m and has not fully reached the previous target of (-0.02, -0.19, 0.99) m. Could joint constraints be slowing it? Its wxyz quaternion is [0.689, -0.156, 0.690, 0.158], which I estimate corresponds to a yaw of about 77°, close to the intended 90° closing-direction orientation but not exact. In the right wrist view, the elephant’s center appears near pixel (280, 265), with the torso near (290, 280). The open fingers occupy approximately x = 0–125 pixels and x = 520 pixels onward. The object appears about 220 pixels wide, so it should fit between them. The target x coordinate of -0.02 m may center the body near image x = 320 pixels. The measured end effector is still 4 cm farther right, at x = 0.02 m, yet the object looks nearly centered. Is the object’s world x coordinate closer to zero? The head-camera center near x = 310 pixels suggested world x = -0.02 m. That would leave a -0.04 m offset from the current end effector, consistent with the wrist-image center being about 40 pixels left of center. I should complete that leftward movement and descend to grasping height. The elephant is lying with its legs upward. I estimate its torso center height at about 0.79 m. The current closing direction is nearly along environment Y, bringing the fingers together from front and back. At the measured end-effector height of 0.999 m, the estimated tip height is 0.841 m, while the legs may reach about 0.82 m. Should I descend to 0.955 m or 0.96 m? The earlier upright body grasp used an end-effector height of 0.96 m. In this lying pose, the feet may reach about 0.80 m and the torso center may be nearer 0.78 m. An end-effector height of 0.94 m would put the tips near 0.782 m, suitable for contact around the torso. I need to avoid the raised feet and grasp the body between the legs. My initial wrist-image reading puts the rounded torso near (290, 300), the legs extending upward toward y = 180 pixels, and the head to the left near (200, 270). At the intended 90° closing-direction orientation, optical X is negative local Y, or environment -Y, so closing along environment Y maps to horizontal motion in the image. If the grasp center is wrong, the fingers might contact the head or trunk on one side and the legs on the other instead of opposing torso surfaces. Should I instead close along environment X at the estimated world center (-0.02, -0.19) m? Looking more carefully, the broad torso seems to span roughly pixel (220, 250) to (350, 350), with four legs around y = 170–260, the head near (190, 280), and the trunk near (210, 190). The back or saddle appears to rest on the table. Closing horizontally could contact the head or trunk on the left and the torso’s right edge, which might be unstable. Centering slightly toward the torso could let the left finger contact its edge near x = 220 rather than the head near x = 180. A torso-center estimate of (290, 290) pixels looks nearly aligned with the current end effector. The fingers could contact the torso around x = 220 and x = 350, though their pads’ vertical extent might still bring one into contact with the protruding head. There is an unresolved orientation question here. If the head lies left of the torso in the wrist image and image horizontal is the closing direction, the head-to-body axis may align with the closing axis. That would mean grasping along the long dimension rather than across the short one. My earlier head-camera reading suggested a long axis along environment X, for which closing along environment Y would be appropriate. But at the 90° closing-direction orientation, wrist-image horizontal represents environment Y. A horizontally elongated body in that view would instead suggest a long axis along Y. I cannot yet reconcile those visual readings. With the straight-down downA orientation, optical X maps to environment +X, but I am unsure how the body would appear in that view. The head-camera image offers another estimate: the head or trunk is near pixel (296, 278), the legs or feet near (323, 280), and the body center near (311, 280). The head-to-tail direction may be approximately horizontal, with a 25-pixel X difference and no vertical difference. On the tabletop plane, head-camera image horizontal corresponds to environment X, suggesting that the long axis is along X and the fingers should close along Y. The intended 90° orientation maps local Y to +Y, which suits that interpretation. For that orientation, local X points downward, local Y points along +Y, and local Z along +X. Optical X is therefore -Y. The camera’s initial local optical Y direction, (-0.5, 0, -0.866), becomes (-0.866, 0, 0.5) in environment coordinates. Image downward thus combines environment -X and +Z, so an environment-X head-to-body axis should appear vertically in the wrist view. Yet the head appears left and the legs upward. Perhaps the relevant axis from the head near (190, 280) to the torso or tail near (300, 300) is more complicated than it first looks. The raised features are legs, not the tail. The elephant’s side-resting orientation may also make the head protrude along Y because of its roll. These interpretations remain tentative. The rounded central torso is still the best grasp candidate, ideally with opposing contacts perpendicular to the spine. I could return to downA and close along environment X, as the left arm successfully did when the toy was upright. Its orientation changed when it toppled, though, and rotating the right gripper back by 90° would take additional actions. The current orientation may give a sufficiently stable torso or leg grasp, provided I verify it with a test lift. The final basket placement has no orientation requirement. A grasp along Y might encompass the torso and head, or two legs. Opposing contacts through the head and rump could be stable if the center of mass lies between them, but I estimate the maximum gripper opening at 0.085 m and the head-to-rump length at perhaps 0.12 m, which would be too long. Another estimate from head-camera x = 290–328 pixels gives a body length of about 38 pixels at a depth of 0.8, or roughly 0.08 m in the world frame. That would just fit the estimated 0.085 m opening, although the head and trunk add length. Grasping across a width of about 0.05 m would be preferable. Using the current head-image extents, x = 290–328 pixels suggests an environment-X length of about 0.09 m, while image y = 265–296 suggests an environment-Y length of about 0.08 m. The lying toy therefore appears nearly round in those estimates, and the current closing orientation may fit. I’ll proceed toward the tentative torso center at (-0.02, -0.19) m, descend toward an end-effector height around 0.95 m, then close and test-lift. If the grasp misses or is unstable, I’ll adjust it. For the immediate action, I’ll target the right end effector at (-0.02, -0.19, 0.955) m with wxyz quaternion [0.707106781, 0, 0.707106781, 0], keeping the gripper open. After 3 steps, I tentatively expect x to be around 0.005 m, z around 0.975 m, and the orientation closer to its target; another 3 steps may be needed to reach 0.955 m. The remaining 0.04 m leftward movement could still be difficult, since the preceding 12-step action reached only x = 0.02 m while also translating and rotating. I considered 6 navigation steps toward a pre-grasp height of 0.97 m followed by 3 final steps toward 0.95 m, but near contact I should use repeated 1–3-step actions. I’ll use 3 steps now and hold the left arm at its current open-gripper pose.

The elephant’s torso appears centered near pixel (310, 300) in the right wrist view, with the open fingers on either side. I’ll descend for another 3 control steps, targeting a right end-effector height of 0.945 m. The measured height may only reach about 0.955 m during this action.

The right end-effector height is 0.964 m, and its orientation is near the intended 90° closing-direction alignment. In the wrist view, the torso center appears near pixel (335, 300). The open fingers occupy x = 0–125 pixels and x = 515 pixels onward, while the elephant spans approximately x = 180–465 pixels, a width of about 285 pixels. I estimate its physical width at perhaps 0.07 m, compared with a maximum gripper gap of 0.085 m. I could close now and inspect the result. Closing horizontally in the image might contact the head or trunk on the left and a leg or the body on the right. At the current end-effector height of 0.964 m, I estimate the finger tips at 0.806 m, while the raised legs may reach 0.82 m, so the pads might contact the legs first. Could pinching two legs still secure the object if the body is supported between them? The fingers close along environment Y and might pinch both legs and body, but I would need a test lift to verify that. I prefer to lower slightly more to reach the torso below the legs. At an end-effector height of about 0.95 m, I estimate the tips at 0.792 m, above the table at 0.75 m, so this appears safe. I’ll keep the fingers open and use 3 control steps toward a target height of 0.945 m, expecting the measured height may reach about 0.95 m. Then I’ll close and test the hold.

The right end effector is now at a height of 0.95 m, with an estimated finger-tip height of 0.792 m. The elephant’s torso and legs appear large in the wrist view, with its center near image x = 340 pixels and the open fingers on either side. I’ll close the right gripper for 3 control steps and inspect the resulting contact. I could use either the current quaternion or the intended 90° closing-direction orientation, since they are nearly aligned. I’ll retain the measured orientation and position (-0.016, -0.19, 0.95) m to avoid drift during closure, while holding the left arm stationary.

The right gripper’s opening command is 0.572 after 3 closure steps, larger than in previous closures. Perhaps this relates to the opening scale at the current 90° closing-direction orientation. In the wrist view, the left finger is near x = 175 pixels and the right near x = 470 pixels; they may be contacting the elephant’s outer head or torso surfaces. I’ll continue closing for another 3 control steps without changing the grasp pose.

The right gripper’s opening command is stable at 0.572. Is the left finger contacting the elephant’s head and the right finger contacting its torso? The fingers appear widely separated, and the grasp may span the elephant’s long axis, perhaps about 0.08 m. I’ll test-lift it for 2 control steps toward a right end-effector height of 0.98 m. If the elephant follows the gripper and remains stable, I can proceed; if it slips, I’ll regrasp it.

The right gripper’s opening command decreased from 0.572 to 0.381 during the test lift. The elephant appears to have rotated or slid within the grasp: its head shifted down, its legs shifted up, and the fingers now seem to contact the middle of its body. It may be secure after this adjustment, but I am not yet sure it lifted with the gripper or whether its scale in the wrist view became smaller. Is the opening command now stable at 0.381? In the head-camera view, I tentatively see the elephant beneath the gripper near image y = 287 pixels, or around (315, 280), though I am unsure about the feet. My earlier estimate was (310, 278), and my post-lift estimate is (313, 285). Should a raised object project higher or lower? For unchanged horizontal coordinates, I believe increasing its height would move it upward in this view, decreasing its vertical pixel coordinate, as in the earlier basket projections. Its increased vertical pixel coordinate might instead reflect a shift closer to the camera, along negative environment Y, as it rotated. It still appears between the fingers in the wrist view. The decreased opening command suggests it slipped into a narrower orientation, but does not necessarily mean it dropped. I should let the grasp settle and check again before transporting it. I considered holding the closed gripper at the same pose for 2 steps, followed by another 2-step test lift. A further lift toward a right end-effector height of 1.02 m could help verify that the elephant stays held; if it falls onto the table, I can regrasp it. For the immediate action, I’ll hold both arms at their current poses for 3 control steps, keeping the right gripper closed and the left open.

The right opening command is now 0.0, but is the elephant still between or above the closed fingers? In the wrist view, it looks as though it might be resting on the gripper or caught on the fingers rather than securely held. The head view still shows it beneath the gripper near image y = 290 pixels; perhaps the fingers are around a narrow neck region. Its body spans wrist-image x = 200–480 pixels, while the fingers meet near (320, 250). It is likely behind the fingers, with the gripper closed in front of it and the elephant resting on the table. Even if it is supported on top of the closed fingers and could be transported carefully, that is not a secure grasp. I have 562 control steps remaining and should regrasp with a different orientation or position. The current q90 orientation closes along environment Y. The fingers appear to have pushed the elephant, slid along its body, and closed empty, perhaps because its shape along Y is too wide or irregular. I could grasp across the legs or the torso with downA instead, closing along environment X across the torso’s narrower dimension. The left arm successfully held the elephant upright with downA, although it is lying down now. I could use the left arm again, but a right-arm body grasp with downA at a lower height may work similarly. Changing from q90 to downA requires a 90° rotation in two moves. One possible sequence is to open and raise the right gripper to 1.02 m while rotating to downA, then descend to (-0.02, -0.19, 0.95) m and close along X. That may contact the torso sides rather than the head-to-tail direction. I should first check whether the failed grasp moved the elephant. Its estimated head-camera position is now (316, 287) pixels rather than the initial (310, 278), suggesting a shift about 0.02 m closer along Y and +0.005 m in X. Its world center may be near (-0.01, -0.215) m horizontally, rather than the earlier estimate of (-0.02, -0.19) m. The wrist-image center is near (340, 200), with the right end effector at (-0.015, -0.191, 0.974) m in the q90 orientation. The elephant may be on the table at z ≈ 0.78 m. Recognizable features in the head and wrist views could be triangulated, although the gripper partly occludes the head view. For the immediate action, I’ll open the right gripper and lift it to 1.05 m at its current horizontal position, holding its current orientation for 6 control steps. I’ll hold the left arm stationary with its gripper open. This should release anything merely supported by the fingers onto the table and clear the view so I can inspect the elephant’s resting position before rotating for another grasp.

The elephant appears to be resting on its back or side near head-camera pixel (320, 289). It looks smaller in the right wrist view, with its center near (340, 140), so it is not held. Has it shifted closer along Y? Using head-camera center (320, 288) and an assumed height of z = 0.78 m, I tentatively estimate world x = 0 m and y = -0.15 m, but I still need to calculate that. I can rotate the open right gripper at its current raised position toward downA, which closes along environment X, then approach using the refined object position. Its current wxyz quaternion is [0.706, -0.034, 0.707, 0.036], close to the orientation with a 90° closing-direction angle. I would first rotate to the intermediate 135° closing-direction orientation, an estimated orientation change of 0.785 rad, and then to downA, possibly adding the horizontal pre-grasp movement afterward. I could combine the intermediate rotation with localization. First, I’ll estimate the torso’s world position from corresponding features in the head and right wrist views using the current calibration. The rounded torso appears near head-camera pixel (324, 286) and wrist pixel (368, 160). The head view may still be partly occluded by the gripper: I also estimate the elephant near (319, 287), with the fingers above it around image y = 265 pixels and the legs and trunk visible. In the wrist view, the large rounded torso occupies the right half, with its center near (369, 159), the head near (295, 190), and the upper legs near (300, 60) and (390, 50). Tentative matching points are the torso at head-camera pixel (328, 289) and wrist pixel (375, 165), the head at (308, 292) and (294, 190), and a leg feature perhaps at (325, 278) and (385, 65), respectively. I’ll calculate the triangulations before choosing the next grasp pose.

The triangulated torso height of about 0.816 m may represent the top of the body. The second torso estimate is (-0.005, -0.212, 0.806) m. The head estimate, (-0.037, -0.192, 0.756) m, suggests that the head is lower and resting on the table, while the legs are near (0.019, -0.203, 0.803) m. I estimate the body center at approximately (-0.005, -0.21) m horizontally, with its top around 0.81 m. The current right end-effector position, (-0.013, -0.193, 1.037) m, is more over the head than the torso, which explains the off-center failed grasp. I should target the torso at (-0.005, -0.212) m rather than (-0.02, -0.19) m, shifting about -0.02 m in Y. Should I use downA, which closes along environment X, across the torso? From the head at (-0.037, -0.192) m to a possible tail position at (0.02, -0.225) m, the estimated long-axis vector is (0.057, -0.033) m, with an angle of about -30° and a length of roughly 0.066 m. A perpendicular closing direction would be c = (0.5, 0.866), at 60°, or equivalently 240°. DownA closes along -X at 180°, which is not ideal. The q90 orientation closes along +Y at 90°, closer to the estimated perpendicular direction of 60°. The previous orientation was therefore reasonably suited to the body; the grasp center being too close to the head seems to have been the main issue. I’ll keep q90 and correct the horizontal target to x = -0.005 m and y = -0.212 m. The fingers likely closed empty because they were around the irregular head and torso region. Centering on the torso should give a more secure grasp. I could retry at a height of 0.96 m rather than 0.95 m to contact the torso and legs. The current end-effector height is 1.037 m, the estimated object top is 0.816 m, and the estimated finger-tip height is 0.879 m, leaving clearance. The immediate pre-grasp target will be (-0.005, -0.212, 0.99) m with q90, followed by a descent toward 0.955 m. I can approach directly without changing the closing axis. The earlier plane-based target was off by about 0.02 m, enough to explain the miss; the stereo localization now gives a more precise torso estimate. I’ll use the q90 quaternion [0.7071, 0, 0.7071, 0] in wxyz order, estimating an orientation difference of 0.07 rad and a positional distance of 0.051 m. I’ll execute 6 steps with the right gripper open and hold the left arm stationary. Afterward, I can descend toward 0.95 m and close. The torso’s front-to-back width along Y may be about 0.05 m, so I expect contact to stop closure at a nonzero opening. I’ll briefly explain the corrected torso location to the user before the approach.

The elephant’s torso center appears near pixel (345, 190) in the right wrist view, with its head near (255, 235) and legs near (230, 120) and (330, 80). The gripper’s horizontal center is at pixel x = 320, so the torso looks sufficiently centered. I’ll lower the right end effector from its measured height of 0.998 m toward 0.95 m in 3-step increments. I expect the first 3 steps may bring it to about 0.967 m, with another 3 steps bringing it toward 0.95 m. I’ll execute the first 3 steps now.

The right end-effector height is 0.965 m, and the elephant’s torso center appears near pixel (350, 240) in the right wrist view, with the open fingers on either side. The alignment looks good. I’ll lower toward a target height of 0.95 m for 3 control steps; the measured height may reach 0.95 m during this action.

At a right end-effector height of 0.95 m, the elephant’s torso appears centered near wrist-image pixel (320, 260), with its head to the left. The open left finger spans approximately x = 0–125 pixels, and the right finger starts near x = 515 pixels. The body spans approximately x = 100–425 pixels, so the left finger may contact the head, trunk, or front leg, while the right finger contacts the torso. I could shift slightly right toward the torso near image x = 340 pixels, but the end effector has reached the intended x coordinate of -0.005 m, and the estimated torso center projects near image x = 320 pixels. I’ll keep this pose and close for 3 control steps, then continue closure for another 3 steps.

The right gripper’s opening command is 0.402 after 3 closure steps. The fingers appear to contact both sides of the elephant’s torso and legs, which looks much better. The left finger may be contacting a leg or the body rather than the head; it appears near wrist-image pixel (200, 300), while the right finger is near (420, 270). I’ll continue closure in place for another 3 control steps to let the opening settle.

The right gripper’s opening command is stable at 0.4. I’ll perform a test lift for 2 control steps, targeting a right end-effector height of 0.98 m, then inspect the next observation to check whether the elephant follows without slipping.

The right gripper’s opening command again decreased, from 0.4 to 0.151, as the elephant rotated or slid. The fingers now visibly pinch the torso sides near wrist-image x coordinates of 280 and 360 pixels. The object appears above the fingers and may be held. Has it actually lifted? In the head view, it appears near pixel (320, 292), at a similar location as before, with the fingers near image y = 280 pixels and the body below them. I should avoid another 3-step hold, since the opening command reached 0 during the previous attempt. Perhaps closure is continuing because the object is sliding; transporting it immediately might keep it pinched. However, with the opening command at 0.151 and the object between the fingers, the grasp may now be secure around the narrower bottom of the torso. I’ll verify that with another small lift rather than transport it yet. I’ll keep the right gripper commanded closed and use 2 control steps toward an end-effector height of 1.00 m. If the opening command stays at 0.151 and the elephant follows, that will support proceeding. If it reaches 0 and the elephant falls, I’ll need a different method.

The elephant slipped again. Why does the opening command fail to remain stable even when the fingers appear to pinch it? Perhaps closure pushes it forward because it is below the fingers rather than between the pads at the correct depth. My fingertip-height estimate is 0.95 − 0.157 = 0.792 m, compared with a torso top at 0.816 m and a torso base at 0.75 m. The pads may be above the body center and contacting only the raised legs, although a secure leg grasp should also support it. Alternatively, an incorrect end-effector Y position may put the fingers in front of the object, closing in air despite their apparent overlap in the wrist image. Could the target Z position instead be too low, placing the fingers below the object so they push it from underneath? These possibilities remain unresolved. With a top-down gripper, the fingers extend downward from the end effector, and the camera sits above and behind them. In the wrist image, the fingers extend from the bottom toward the center, while the object on the table appears above the fingertips in image coordinates. During closure, the fingers converge near image y = 260 pixels, while the torso center is near y = 220 pixels. The apparent contact may therefore be behind the tips rather than between the pads. Perhaps link6 needs to be higher rather than lower. I estimate that the pads extend along local X from about 0.06 to 0.157 m. At an end-effector height of 0.95 m, they span environment z = 0.793–0.89 m, while the object spans approximately 0.75–0.82 m. That gives an overlap of 0.793–0.82 m, or 2.7 cm, which seems sufficient. At an end-effector height of 0.98 m, the pads span z = 0.823–0.923 m. A held object should rise with them; an object left on the table would lose that overlap. It appears to have slipped as closure continued. Could the maximum opening be too small? I tentatively associate an opening command of 0.4 with a physical opening of about 0.04 m, while estimating the torso width along the closing direction at 0.06 m. Does contact occur as the command decreases from 1 to 0.4? If the object’s maximum width is 0.08 m, contact might occur around an opening command of 0.6. Continued closure toward 0 could then push it out because the contacts are not opposed or centered. The elephant’s irregular torso makes a whole-body grasp difficult; I should seek flatter, more nearly parallel contact surfaces. The left arm successfully grasped the body while the elephant was upright. I could stand it upright again and repeat that grasp, or use a smaller feature such as a leg shaft or neck. A grasp around one or two cylindrical leg shafts, or possibly the head or trunk, may offer better opposing contacts. Lifting by one leg could let the elephant rotate or dangle, but that is acceptable for placement inside the basket. The torso-and-leg grasp is not working, so I’ll switch to closing across a leg’s width. The four legs have flat foot soles and roughly cylindrical shafts that I estimate at 0.015–0.02 m thick; a shaft diameter around 0.015 m may be a suitable grasp target. In the right wrist view, one front leg appears near (380, 160) pixels, running from a foot near (390, 100) to the body near (350, 250). Another leg appears near (260, 160). If the shaft’s long axis is vertical in the image, closing horizontally, along environment Y, would grasp across its width. I favor the image-right front leg near (365, 170), aiming at the middle of the shaft rather than the torso. A shaft about 0.02 m thick should offer a smaller, more uniform contact. Pinching the thickness of a foot sole is another possibility, but I prefer the shaft. The right gripper is currently empty and closed at (-0.003, -0.214, 0.997) m, with the elephant on the table. I need to localize a specific shaft using the head and wrist views. The earlier leg triangulations from obs_000544 may help, but I still need a matching feature in the current views. In obs_000566, the elephant appears near head-camera pixel (320, 290), with its legs mostly occluded by the gripper. I considered opening and lifting to 1.05 m to clear the head view and make the object smaller in the wrist view. A later approach could retain the q90 orientation and use an end-effector height around 0.97 m, with an estimated tip height of 0.812 m, to pinch the shaft around z = 0.80 m. I estimate the foot soles at z = 0.82 m and the shafts at z = 0.78–0.82 m; a tip height of 0.792 m may also be suitable. The shaft center will need localization within about 5 mm, which stereo views may provide. For the immediate action, I’ll open the right gripper and lift it to 1.06 m at its current horizontal position for 8 control steps, holding its orientation and keeping the left arm stationary. After clearing the view, I’ll inspect the head image and a coordinate crop of the obs_000566 right wrist image to locate a leg shaft for the next grasp.

The elephant appears near head-camera pixel (320, 300), partly beneath the gripper, with its legs visible. The right wrist view shows the whole elephant, centered around (320, 140). Two of the nearest legs appear around (350, 120) and (290, 120) in that wrist image. I initially favor the image-right front leg shaft, perhaps near (352, 124). The elephant is small in the head view, so matching a particular leg between cameras may be difficult. I could instead intersect a ray from the current wrist image with an assumed height plane. For example, intersecting the ray through pixel (350, 130) with z = 0.80 m would give exact world X and Y coordinates conditional on that height assumption and the current calibration. The earlier stereo estimate of z ≈ 0.803 m could guide the assumption, without requiring a new head-camera correspondence. Should the grasp end effector have the same horizontal coordinates as that point? With the top-down q90 orientation, optical X maps to environment -Y, so the image’s horizontal position reflects an environment-Y offset. I can use the ray-plane calculation to align the end effector with the shaft, but I need to choose the shaft’s pixel center accurately. The right wrist image is 640 × 480 pixels. I estimate the four foot soles near (281, 70), (312, 62), (354, 75), and (382, 80). A possible left-front leg runs from its foot at (284, 72) toward (294, 153), with its shaft center near (291, 120). Another leg runs from (312, 64) toward (310, 120). The image-right leg runs from (354, 76) toward (346, 150), with its center near (350, 120). The far-right leg runs from (383, 80) toward (370, 140). These feature identifications remain approximate. I want an isolated shaft with room for a finger on either side. The rightmost leg near (370, 120) lies at the torso’s outer edge, with free space outside the object and another leg on its inner side. Since the fingers close horizontally in the wrist image, they could pinch that shaft with pads near image x = 350 and x = 390, although the adjacent leg near x = 350 might interfere. The leftmost shaft near (290, 120) is another option, with the trunk farther left near x = 245 and an adjacent leg near x = 315. There may be enough space there too. I estimate the pad width at about 0.02 m and the space between legs at about 0.02 m, so fitting a pad between them may be possible. I favor the outer right shaft near (365, 130), which appears about 25 pixels wide, or approximately 0.015 m. A grasp point around (366, 130), between the foot and body, seems suitably isolated. The plan is to approach with the gripper open, descend with a pad on each side, and close around the shaft. I could calculate its world position by intersecting that pixel’s ray with z = 0.80 m. I should also check the projection of a point directly below the end effector at that height. Would placing the end effector at the resulting world X and Y coordinates make the grasp point project to image x = 320 by construction? Pixel x = 366 indicates an environment-Y offset from the current end effector, so I would shift the end effector accordingly, but I can verify this with projection. The shaft height is still uncertain. The earlier stereo estimate of z ≈ 0.803 m, from head-camera pixel (325, 278) and wrist pixel (365, 65), referred to a foot rather than a shaft. The shaft midpoint might be nearer z = 0.78 m. If the legs extend upward from the lying body, I estimate the foot soles around z = 0.82 m and their attachment to the body around z = 0.78 m. I’ll use z = 0.79 m as a candidate midpoint. Intersecting the ray through (366, 130) at z = 0.79 m rather than 0.80 m should change the horizontal estimate by less than 1 cm. A new stereo correspondence could resolve the height more directly. In the head view, I estimate the elephant near (320, 299), with feet around (312, 287) and (325, 287). The rightmost shaft might be near (327, 296), but the gripper still occludes the upper part, so that match is uncertain. I also considered using the tabletop plane at z = 0.75 m to locate the shaft’s base, but I prefer the estimated midpoint height of 0.79 m for the grasp. I’ll calculate world positions for several candidate wrist pixels and heights, including z = 0.79 m and 0.80 m, then project them into the head view to compare with the visible leg.

The outer leg’s estimated world position is approximately (0, -0.235, 0.79) m. Its head-camera projection at (320, 298) pixels matches the visible tan foot there. I interpret this as the foremost leg, closer to the robot, so I’ll use (0, -0.235) m as the horizontal target for the shaft grasp. The right end effector is currently at (-0.003, -0.214, 1.06) m. It needs a planned shift of +0.003 m in X and -0.021 m in Y, followed by descent toward a grasp height of about 0.95 m. At that end-effector height, I estimate the finger tips at 0.792 m and the pads spanning 0.793–0.89 m, overlapping the shaft’s estimated height range of 0.78–0.82 m. I’ll retain the q90 orientation, which closes along environment Y. I’ll first approach (0, -0.235, 0.965) m, then descend toward 0.95 m. The first target requests a 0.095 m descent from the current height of 1.06 m. I tentatively expect 6 steps to bring the measured height to about 0.99 m, followed by 3 steps toward 0.96 m and another 3 toward 0.95 m. I also considered targeting 0.96 m for 8 steps, but I’ll use 6 steps toward 0.965 m and inspect the result. There is some collision uncertainty during descent. With the gripper open along Y and centered at y = -0.235 m, I estimate one finger near the body at y = -0.20 m and the other outside it at y = -0.27 m, with an opening of about 0.085 m. The body may extend from y = -0.17 to -0.24 m, so the inner finger could contact the torso or another leg. A finger placed in the gap between the outer leg and torso may fit: I estimate that gap at about 0.02 m and the open finger’s thickness at about 0.01 m. This depends on accurate positioning. An alternative is to grasp both front legs, with the inner finger between the legs and the outer finger outside, centering around y = -0.22 m. However, the earlier body grasp slipped, so I favor the single outer shaft with the inner finger in the gap. I’ll move the open right gripper toward (0, -0.235, 0.965) m for 6 control steps while holding the left arm stationary.

The right end effector is measured at (-0.004, -0.224, 1.011) m, so it has not fully reached the target. The elephant appears centered near pixel (300, 180) in the right wrist view. I’ll continue toward (0, -0.235, 0.965) m for 6 control steps with the fingers open; this may be enough to reach that pose. Afterward, I plan to descend to the final grasp height of 0.95 m.

The right gripper is at the pre-grasp height of 0.965 m. I am still checking which visible shaft corresponds to the selected outer leg. It may be near wrist-image pixel (340, 170). The four feet appear across the top at x coordinates of approximately 150, 230, 305, and 345 pixels, with the torso below. The front-right leg appears near (300, 200), while the far-right leg appears near (350, 170). Which of these corresponds to my horizontal world target of (0, -0.235) m? The gripper is centered at image x = 320 pixels, but I am unsure of the shaft’s vertical pixel coordinate. The front-right leg near (300, 200) looks close to the grasp center. The open fingers occupy the image sides, around x = 0–125 pixels and from x = 515 pixels onward. The selected leg appears near x = 320 pixels, with the elephant’s overall center farther left and the outer leg on its right side around x = 330 pixels. This looks suitable for the final descent. I’ll lower the right end effector to 0.95 m for 3 control steps, then close the fingers around the shaft.

The elephant now appears large in the right wrist view. Is the outer leg near pixel (320, 250)? The central right leg shaft appears to be around (310, 270), between the gripper fingers, which are still open on either side. I’ll close the right gripper for 3 control steps to grasp the shaft. I expect contact may stabilize the opening command around 0.15–0.2, though that remains to be verified.

After closure, the fingers appear near wrist-image x coordinates of 210 and 420 pixels. Are they still bracketing the legs and torso rather than just the selected shaft? The view has changed slightly, suggesting that the elephant rotated as the closing gripper pushed the whole object. The right opening command is 0.391. The fingers still seem widely separated at an opening command of about 0.39. I estimate the shaft width at perhaps 0.02 m, which might correspond to an opening command near 0.2. I’ll continue closure in place for another 3 control steps to let it settle. If the opening stabilizes, I’ll test-lift; if it decreases to 0, I’ll consider the leg grasp unsuccessful.

The right gripper’s opening command is stable at 0.379. I’ll use a very small test lift of about 0.015 m rather than 0.03 m to check whether the hold remains stable without rotating the elephant. I’m considering 1–2 control steps toward a right end-effector height of 0.966 m, a planned increase of 0.015 m; one step might produce an actual lift of about 0.011 m. To keep the test brief, I’ll use 1 control step with a target height of 0.965 m, then inspect the opening command and the elephant’s motion.

The right gripper’s opening command decreased again, from 0.379 to 0.273, after the approximately 1 cm lift. The elephant rotated, and the fingers are now closer together but still between the legs. This suggests that the elephant may be lifting and rotating because the grasp is off-center, allowing the fingers to close as it presents a narrower section. If they are pinching a leg, the opening might stabilize before reaching 0, perhaps around 0.2. The previous whole-body grasp reached an opening command of 0 after about 5 cm of lift. I could hold the current pose for 3 control steps to see whether the opening stabilizes or reaches 0; if it reaches 0, the object may drop. Instead, I’ll make one more small lift toward a right end-effector height of 0.975 m, a planned increase of 0.013 m, using 1 control step. If the opening remains above 0.1 and the elephant follows the gripper, the grasp may be secure.

The right opening command is 0.127, and the elephant still appears between the fingers, near head-camera image y = 300 pixels, possibly still on the table. Another 1-step lift toward an end-effector height of 0.99 m would likely bring the opening command to 0 and let it drop. My leading interpretation is that the fingers are pushing and rotating the elephant on the table rather than lifting it cleanly, but I am not certain. I also need to be careful about interpreting the opening command: it is a command, not a measured finger gap. Perhaps commanding closure simply interpolates it toward 0 independently of contact. However, its change from 0.391 to 0.379 over 3 steps, followed by an apparently stable value in obs_000595, seems slower than that interpretation would suggest. Could the interpolation be asymptotic, or could physical contact affect the actuator? Other grasps maintained nonzero opening commands at contact. I cannot resolve this from the command alone. The alternative is that the elephant is following the gripper while rotating into a thinner configuration. In the head view, it appears near pixel (320, 299) after about 0.024 m of lift, but its world X and Y coordinates may also be changing. Its large wrist-image scale looks similar between obs_000595 and obs_000597. If it remained on the table while the camera rose 0.024 m, I would expect its scale to decrease by roughly 5%, which may be too subtle to judge. Rotation could also make it look the same size or larger. In obs_000597, I tentatively see the left finger at (285, 260) on one leg shaft and the right finger at (355, 260) on another, with the body below. It could be securely pinching two legs. Even an opening command of 0 would not prove the gripper empty if a very thin shaft remained between the pads, although earlier attempts left the elephant on the table. Stereo triangulation could help determine whether the elephant’s height increased with the end effector. Its height might have risen from 0.80 to 0.82 m; an earlier body estimate was 0.806 m, and it may now be near 0.81 m. Unfortunately, the head view is occluded, making matching features difficult. A possible head or trunk correspondence is head-camera pixel (309, 298) and wrist pixel (200, 280). The head view shows two tan foot-like rectangles near (317, 296) and (328, 296), while the wrist foot soles appear near (287, 137), (338, 145), (400, 170), and (440, 170). I do not know which features correspond; a front foot may be near head pixel (320, 300). I could inspect an enlarged head-camera crop, but if the elephant remains on the table, I need to change the grasp rather than continue lifting. The q90 orientation itself is top-down: it maps local +X downward. Pushing the elephant into the red basket is not a useful substitute. The baskets are behind it near environment y = +0.05 m, while the elephant is near y = -0.22 m. The basket wall would prevent it from sliding inside along the table, so it needs to be lifted over the rim. I have tried 3 grasps, so using both arms may now be justified if necessary. They could support opposite sides of the torso, or one could help turn the elephant upright while the other grasps it. The left arm is near x = -0.188 m and the right near x = 0 m, so both could potentially support the object from its sides or underneath. Carrying both arms together to the red basket would be complex, however. Another option is to use the open left gripper as support while the right lifts or rolls the legs, restoring the elephant to an upright position. The left arm previously held its upright body successfully across environment X. Reorienting it and then grasping the body would take more steps but may be feasible. I could also retreat the right arm and try a left-arm torso grasp directly. The left arm is open at (-0.188, -0.215, 1.058) m. A target near (-0.005, -0.212, 0.96) m with downA would involve an X change of 0.183 m and remain within the 0.25 m command limit. However, closing along environment X might grasp along the lying elephant’s head-to-tail direction instead of across its width. The earlier estimated horizontal points were head (-0.037, -0.192) m, torso (-0.005, -0.212) m, and legs (0.019, -0.203) m. The head-to-torso vector is (0.032, -0.02) m, so the spine appears diagonal in X and Y. Closing along X would partly follow it and might contact the ear and torso rather than opposing body surfaces. The q90 closing direction along Y is more nearly perpendicular, yet those grasps have still failed. Its orientation may have changed, but I do not have a clear reason to prefer the left-arm attempt yet. Height and pad overlap may be the more important problem. I considered a higher grasp at an end-effector height of 1.0 m around the raised foot soles, with tips near 0.84 m. But the estimated pad span would be z = 0.843–0.943 m, above the object’s estimated top at 0.82 m, so there would be no contact. The previous 0.95 m grasps put the tips near 0.792 m and may have contacted only the upper body or raised legs. With the body spanning roughly z = 0.75–0.81 m, that gives only 0.792–0.81 m, or 18 mm, of overlap. Lowering could engage substantially more of the torso. At an end-effector height of 0.92 m, I estimate the pads would span z = 0.763–0.86 m. At 0.925 m, the tips would be near 0.767 m and the pads would span z = 0.768–0.865 m, giving approximately 42 mm of overlap with the body. That could cradle the broad torso and reduce rotation, with an estimated 0.017 m of table clearance. Lowering also resolved the earlier red-bar grasp. I have not tried an elephant grasp below 0.95 m. During the earlier upright set-down at an end-effector height of 0.964 m, the tips were near 0.806 m and the base reached the table; in the lying pose, that height would engage only the upper surfaces of an object whose top is near 0.82 m. A lower torso grasp seems worth trying before resorting to both arms. I will reopen the right gripper at its current height of 0.974 m, retain q90, and lower toward the corrected torso center. I initially considered horizontal coordinates (0, -0.215) m, but the selected torso target is (-0.005, -0.212) m rather than the current outer-leg position near (0.002, -0.235) m. The planned target is (-0.005, -0.212, 0.925) m, with an estimated travel distance of 0.052 m. I will use 6 control steps with the right gripper open and hold the left arm stationary. The open fingers could contact the raised legs during descent, but I estimate the opening at 0.085 m and the torso width at 0.06 m, which should leave room. At the target height, the estimated tips at 0.767 m remain above the table at 0.75 m. After inspecting this lower pose, I plan to close for 6 steps and test-lift again. More pad contact around the corrected torso center may secure the elephant.

The right opening command is unexpectedly 0.488 after 6 steps with gripper_closed set to false, so it has not fully opened. Its measured wxyz quaternion has changed to [0.694, 0.01, 0.72, 0.009], indicating a slight tilt. Could that be due to a collision? The measured end-effector height is 0.948 m rather than the requested 0.925 m, so it has not reached the lower target. The fingers may be contacting the elephant or table and preventing further descent. The incomplete opening might also relate to interpolation from the previous closure command. The opening command was previously 0. I expected it to increase by about 0.194 per step when commanded open and reach 1 after 6 steps. Could the reported value instead reflect physical opening? I interpret the remaining value of 0.488 as contact blocking the opening, with the fingers wedged against the elephant or table. The elephant has rotated so its torso appears vertical. There may now be enough contact and pad overlap to grasp it by closing at the current height of 0.948 m. I take the partial opening as an indication that the elephant is between the fingers and holding them apart. Closing from this position might secure it. Earlier, closing from an opening command of 1 allowed the fingers to push the elephant; starting partially open around it may cause less pushing. The slight orientation deviation may also be due to contact. This attempt might succeed, but I should inspect the result before lifting. I will not force a deeper descent. I’ll hold the right arm at its measured position of (-0.001, -0.214, 0.948) m and wxyz quaternion [0.694, 0.01, 0.72, 0.009], command its gripper closed for 3 control steps, and keep the left arm stationary with its gripper open. Then I’ll inspect the contact before proceeding to a lift.

The right gripper’s opening command is 0.095, but is the elephant securely between the fingers? One leg now appears centered. In the wrist view, the left finger near pixel (250, 270) seems to touch the left side of the central leg, while the right finger near (380, 270) touches its right side or the adjacent body, with the torso below. This narrower grasp looks promising, though its stability is still uncertain. I could hold closure for 3 control steps to see whether the opening command stays at 0.095 or reaches 0, then lift for 1 step. Instead, I’ll immediately test the grasp with a 1-step lift toward a right end-effector height of 0.96 m. If the elephant moves with the gripper, the opening command may stabilize around 0.1.

The right gripper’s opening command increased from 0.095 to 0.106 after the lift rather than collapsing. The elephant appears to have lifted or rotated: its feet changed position, and its scale in the wrist view may be unchanged. The contact looks stable, so this may finally be a successful grasp. The slight increase could reflect the object shifting into the pads, though that remains uncertain. The elephant may still appear in the same place in the head view, while the wrist view seems to show a leg being lifted. I’ll use another single control step toward a right end-effector height of 0.972 m. If the opening command remains around 0.1 and the elephant follows the gripper, that will support concluding that the grasp is secure.

The elephant has rotated significantly, while the right gripper’s opening command remains stable at 0.098. It may finally be held by a narrow leg pinch and hanging freely; that is acceptable for container placement as long as it stays held. In the head-camera view, it appears below the gripper near pixel (315, 303), but I cannot tell whether it is still on the table. The changing foot positions in the wrist view suggest it is dangling and turning. Finger contact could also rotate it on the table during a vertical lift, so this is not conclusive. I considered lifting the closed right gripper toward an end-effector height of 1.03 m for 5 steps to check whether the elephant stays with it. Another option was 5 steps toward 1.04 m, with an estimated actual rise of about 0.04 m; if held, the elephant should stay in view, whereas an unsupported object may drop away. I’ll use the more cautious option of 3 steps toward 1.01 m, expecting an actual rise of about 0.025 m, and inspect the next observation before transporting it.

Is the elephant now definitely held? It remains large in the wrist view and stays in the same position relative to the fingers after the 0.035 m lift. In the head view, it is near pixel (314, 299) and still appears to be on the table, though it may be raised. The opening command is stable at 0.093, so I think it is held by two legs. I should transport it carefully to the red basket. The right end effector is at (0.001, -0.216, 1.004) m with wxyz quaternion [0.695, 0.01, 0.719, 0.009], close to q90 but slightly tilted; local +X may point downward with a small tilt. The elephant hangs roughly horizontally, with its center of mass perhaps 0.15 m below the fingers and a long extent of about 0.1 m. I considered a transport target at (0.15, -0.12, 1.06) m with q90, [0.7071, 0, 0.7071, 0], estimating the distance at 0.18 m, within the command limit. The left arm is at (-0.188, -0.215, 1.058) m, about 0.189 m from the right arm, so the grippers are perhaps 0.19 m apart. How far does the elephant’s head extend leftward in X? It could potentially contact the left arm, although moving the right arm rightward would take it away from the left arm and appears safe. I should lift vertically first to ensure the elephant’s bottom clears the table and the blue basket rim during transfer. Its bottom may currently be around z = 0.82 m. With link6 at z = 1.004 m, I estimate the finger tips at z = 0.846 m and the held legs near z = 0.85 m. The feet appear above the torso in the wrist view, but the body’s bottom might still be near z = 0.75 m. The head view also suggests that the body could still touch the table and be dragged despite the leg hold. I’ll raise the right end effector vertically to z = 1.08 m for 5 control steps, keeping its gripper closed and using q90 while holding the left arm stationary with its gripper open. If the elephant stays held, I estimate its bottom will reach about z = 0.83 m, clearing the rim. I’ll inspect the next observation before transporting it.

The elephant appears stably held with the right end effector at z = 1.045 m. In the head-camera view, it has risen from about image y = 300 pixels to y = 288 pixels. I considered another 5-step vertical lift toward z = 1.08 m, which might bring the measured height to about 1.075 m, followed by transport. Instead, I can combine the lift with a rightward move to (0.15, -0.12, 1.08) m while maintaining q90. I estimate the target distance at 0.175 m and will use 15 control steps, holding the left arm stationary. The elephant’s bottom may still be around z = 0.80 m, or perhaps 0.79 m at the start of this move. The path through horizontal position (0.15, -0.12) m stays in front of the blue basket, which is behind it near y = 0 m. The planned Y displacement is +0.098 m, and the X movement is roughly +0.15 m, away from the left arm. There are no remaining objects on this tabletop path. With the blue basket’s front at about y = -0.02 m, the waypoint at y = -0.12 m should remain clear even if the horizontally extended elephant spans approximately ±0.05 m in Y. The combined lift and transfer therefore seems safe. After this waypoint, I could continue toward a red-basket front approach at (0.28, -0.03, 1.05) m. Another possible approach is (0.29, -0.01, 1.03) m, though I may need to change orientation for a forward swing. The current q90 orientation closes along environment Y. The elephant is held by its legs and appears horizontal in the wrist view, with its head to the left and its legs to the right. Is its long extent along the closing direction? It appears to be held by two legs and extends left of the fingers, so its asymmetric shape needs clearance from the rim. For placement, I could rotate q90 by Rx(35°) about environment X, as before, to point the fingers forward and swing the elephant into the basket. Moving directly over the basket center at x = 0.29 m, y = 0.04 m may be better if reachable. That position is near the right arm’s base; the earlier downA approach at the red basket worked, although q90 may change the reach. I could also aim for an end-effector pose at (0.29, -0.02, 1.05) m and then tilt forward. At an end-effector height of 1.08 m, I estimate the elephant’s bottom might be at z = 0.86 m, above the rim at about 0.83 m. For now, I’ll execute the 15-step move to (0.15, -0.12, 1.08) m with the right gripper closed and the left arm held in place.

The elephant appears stably held and elevated at the front-left of the red basket, hanging roughly horizontally. I’ll move the right end effector to a front approach pose at (0.29, -0.02, 1.06) m while retaining q90, the wxyz quaternion [0.707106781, 0, 0.707106781, 0]. I estimate the target distance at 0.174 m, within the command limit. The position is near the right arm’s base and likely reachable. Does the elephant’s long body extend leftward in the head-camera view? It appears near pixel (415, 220), while the red basket’s front spans approximately x = 385–515 and y = 140–210 pixels. The elephant therefore appears just outside the front-left edge at image y = 220 pixels. A forward swing along environment +Y should bring it into the basket. At the current end-effector horizontal position of (0.15, -0.12) m, I estimate the object center’s x coordinate near 0.15 m, but its y coordinate is uncertain. The fingers hold a leg near x = 0.15 m, and the body may extend along environment -Y. In the wrist view, the red basket is at the upper left, the blue basket is to the left, and the elephant’s center is near pixel (350, 220). Moving to horizontal coordinates (0.29, -0.02) m should bring it above the red basket’s front before I tilt forward. Could the q90 approach still have reach problems? A previous right-arm approach at (0.29, 0, 1.03) m succeeded with the straight-down downA orientation. q90 changes the wrist orientation, but the link6 position is the same, so this approach may be reachable. I plan to use 15 control steps toward (0.29, -0.02, 1.06) m, then tilt forward by 35° about environment X. First, I’ll calculate the tilted quaternion as Rx(35°) multiplied by q90.

The calculated forward-tilt quaternion is approximately [0.6744, 0.2126, 0.6744, 0.2126] in wxyz order; this also rotates the gripper’s local Y axis. Another option is to move the end effector about +0.08 m in Y over the basket center while retaining q90, avoiding a tilt that might rotate the held elephant into the rim. I also considered a direct target of (0.29, 0.04, 1.05) m from the current horizontal position of (0.15, -0.12) m. I estimate that move at 0.216 m, within the command limit, and lowering slightly might help the IK solve during the forward reach. Alternatively, I could first move to horizontal coordinates (0.29, -0.02) m, then target (0.28, 0.04, 1.0) m over the center. The earlier direct red-basket-center approach with downA failed, apparently because of arm extension. Is the right arm’s base near x = 0.3 m, y = -0.35 m? That remains uncertain, and q90 may have the same positional reach limitation. Moving to the front and then tilting seems safer. I’ll use 15 control steps to target the right end effector at (0.29, -0.02, 1.06) m with q90, preserving the leg hold while keeping the left arm stationary.

In the head-camera view, the elephant appears over the front-left of the red basket’s interior, perhaps already above the white toy. Its apparent position is pixel (474, 181), within the opening’s estimated image bounds of x = 383–512 and y = 140–205 pixels. It might already be directly over the interior, in which case a tilt may not be necessary, but its elevation could make it appear farther inside than it really is. The right end effector is at (0.29, -0.021, 1.059) m, near the front rim. The legs are held near the gripper, but I am uncertain whether the body hangs forward or left. In the wrist view, the elephant’s center is near pixel (390, 220), while the red interior occupies roughly x = 150–300 pixels to its left. With q90, image horizontal corresponds to environment -Y, so image left corresponds to greater environment Y. This suggests the basket interior is farther forward than the elephant, which may still be over only the front portion of the opening. I could move another +0.05 m along Y or tilt forward about environment X to swing the held leg and body along +Y. I’ll choose the 35° forward tilt, using the approximate wxyz quaternion [0.67438, 0.21263, 0.67438, 0.21263] and target position (0.29, -0.021, 1.04) m, lowering by about 0.02 m over 10 control steps. The long, horizontally held elephant could bring its feet or head near the rim during rotation. However, the forward swing should also raise it slightly relative to the end effector, helping clear the front rim while the small descent offsets that rise. I’ll maintain the grasp, hold the left arm stationary, and inspect the next observation before releasing.

The elephant appears over the red basket’s interior at head-camera pixel (466, 172), with the white toy near (462, 158). They look close but distinct. The wrist view also shows the elephant over the basket floor and the white toy toward the upper left. The right end-effector height is currently 1.046 m. I estimate its forward tilt at about 15°, the elephant’s bottom at z ≈ 0.86 m, and the rim at z ≈ 0.83 m. I’ll finish the 35° forward tilt and lower farther before release. I considered lowering to 1.0 m; the immediate target will be (0.29, -0.016, 1.005) m with the 35° tilt quaternion, using 8 control steps. I need to avoid contact with the white toy. Its exact position in the red basket is uncertain: was it near head-camera x = 466 pixels, and is the elephant above it? In the wrist view, the white toy is toward the upper center-left, with the elephant’s head and trunk below and to its left, so there may be some overlap. I estimate the basket width at 0.24 m and each toy’s size at about 0.08 m, so both should fit. The right end effector is centered at x = 0.29 m, and the white toy may initially have been placed around environment x = 0.30 m. It previously appeared near head-camera pixel (466, 177) and now seems near (462, 156), perhaps toward the back center. The elephant should settle toward the front or center. The elephant could contact the basket bottom and slip during lowering, but that would be acceptable if it remains contained. I’ll keep it grasped through this 8-step lowering motion, then release it.

In the head-camera view, the elephant appears at pixel (449, 165), inside the front-left of the red basket. The white toy is partly occluded behind the gripper, perhaps near pixel (469, 160). The wrist view shows the elephant centered over the red basket floor, with the white toy toward the top of the image. The right end-effector height is 1.016 m, and I estimate its tilt at about 20°. The elephant’s bottom may be at z = 0.85 m, with the basket floor at about z = 0.77 m, giving an estimated release drop of 0.08 m. I could lower for another 5 control steps toward an end-effector height of 0.99 m with the planned 35° tilt, but that might cause contact with the white toy or basket. Is the elephant near the front-left wall? The wrist view shows basket floor around it, so releasing from the current height appears safe. The leg grasp is delicate, and opening the fingers should let the elephant drop inside the basket. I’ll open the right gripper for 3 control steps while holding both arm poses and leaving the left gripper open, then verify that the elephant remains inside.

All seven objects appear to be in their assigned baskets: the green and yellow peppers in the white basket, three chocolate bars in the blue basket, and the white horse toy and elephant in the red basket. The wrist view shows the elephant lying supported inside the red basket, with the white horse also inside. The manipulation goal appears complete, but native_success is still false because the arms still need to return. Before calling robot_reset, I need to ensure the objects are released and both arms are in clear, open space. The left gripper is already open at (-0.188, -0.215, 1.058) m in the clear front-left area. The right gripper is at (0.29, -0.012, 1.016) m, tilted near the red basket with its fingers extending into the opening. I need to move it upward and backward before the return motion. I considered moving the right arm to (0.30, -0.20, 1.08) m with the downward quaternion [0.5, -0.5, 0.5, 0.5], or an orientation closer to its initial one. For the left arm, I considered (-0.30, -0.30, 1.05) m with its initial orientation. However, changing the right orientation from its current quaternion [0.691, 0.149, 0.691, 0.149] to the downward orientation might require about 1.3 rad. The q90-to-downward change is 90°, and with the current tilt of about 20°, I also estimate the remaining difference might be about 1.14 rad, still above the 1 rad command limit. I could use an intermediate orientation, but simply retaining the current orientation during withdrawal is easier; robot_reset can handle the rotation afterward. I’ll move the right end effector backward along negative Y and upward to (0.30, -0.20, 1.08) m, retaining its current quaternion and commanding the gripper open. I estimate this move at 0.198 m, within the distance limit. Keeping the fingers tilted while raising and withdrawing them appears safe. I’ll move the left arm to (-0.30, -0.30, 1.06) m with its current downward orientation and its gripper open, estimating that move at 0.137 m. Both motions move the arms away from the center. I’ll execute this withdrawal for 15 control steps and inspect the measured poses afterward. The right arm may not fully reach its target in that call, so I’ll check whether it has enough clearance before resetting. Its opening command is currently 0.922 after 3 release steps, nearly open; continuing with gripper_closed set to false should finish opening it. Once both arms are clear, I plan to allow 50 steps, the maximum per call, for robot_reset and inspect the result. The left starting position was (-0.3, -0.352, 0.922) m. At the planned withdrawal pose, I estimate it will be 0.146 m from that position with a 90° orientation difference. The right withdrawal pose will be about 0.215 m from its starting position, with its tilted orientation still to return. Fifty steps may only complete part of the return, so multiple reset calls may be needed. There are 433 steps remaining, which should leave enough budget. I’ll only treat the whole task as successful once the reset completes and native_success is true.

All objects are sorted and both arms are clear, so I’ll call robot_reset. The left link6 is at (-0.3, -0.3, 1.06) m, pointing downward, and the right is at (0.299, -0.181, 1.074) m with its tilted orientation. Both grippers are open. The initial poses had y = -0.352 m and z = 0.9215 m, with the initial orientation. The reset may swing the arms, but they are now in clear space above the front of the table. The right arm will return from y = -0.181 m toward -0.352 m, away from the baskets, which appears safe. The left arm is already close to its initial y position at -0.3 m and will descend about 0.14 m through an area without objects. Will 50 steps be enough? Earlier motions moved about 0.15 m in 15 steps. The reset uses joint interpolation, with a maximum of 50 steps per call, and its actual speed might be about 0.02 rad per step. The joints are still far from their initial configurations; for example, the right arm’s joint 2 might be around 1.5 rad. I’ll allow 50 steps for this reset and inspect the resulting observation to see whether the return is complete.

The episode has ended with native_success set to true, so I should report the supplied successful outcome briefly and take no further robot actions. I could list the peppers in the left basket, chocolate bars in the middle basket, and wooden toys in the right basket, then note that the environment reported success after the arm-return sequence. The reset feedback says reached_home is false, so I should not claim that the arms reached their exact initial configurations. Should I mention that separately? The task requires arm return, but native termination accepted the return with the arms close to home and reported success. I’ll state that all seven objects were sorted into their designated baskets and that the arm-return sequence finished the episode, without claiming exact home arrival.