按语言分拣物体任务成功

I may need to manipulate seven objects: two wooden toys, three watches, and two chocolate bars. In the high camera image, the left basket appears white, at approximately x = -0.27; the middle basket is blue, at x = 0; and the right basket is red, at x = 0.27. I tentatively see two watches on the left side of the table, around x = -0.2, and one on the right near x = 0.17. Their approximate image positions are (123, 247), (192, 282), and (415, 297) pixels. The wooden toys may be the two light wooden objects resembling stacked rings near the center, at image x coordinates of about 250 and 330 pixels. There may be two chocolate bars: a white package near the center around x = -0.02, standing diagonally, and a Snickers package on the right. I should sort these objects into their designated baskets. First, I should read the robot-manipulation skill.

I should estimate more precise coordinates by projecting image pixels onto an assumed table plane. The table height may be z = 0.75 m, judging from the baskets, but this still needs estimation. The starting end-effector height is z = 0.9215 m. I initially read the quaternion [0.707, 0, 0, 0.707] as a 90° rotation about X and wondered whether local +X mapped to environment −Y. However, the quaternion is in wxyz order: w = 0.707 and z = 0.707, so it represents a 90° rotation about Z. Local +X maps to environment +Y, and local +Y maps to environment −X. Thus the fingers extend along environment +Y and open and close along environment X. This agrees with my impression that the grippers point away toward the baskets. The end effector is at y = −0.352 m, with the finger tip at approximately y = −0.194 m. The table front may be around y = −0.5 m. For the high camera, the projection equations are u = fx*x/Z + 320 and v = fy*(−0.866*y − 0.5*z + 0.29893)/(0.5*y − 0.866*z + 1.33776) + 240. With an assumed table height of z = 0.75 m and basket centers around v = 177 pixels, I can solve for y. Could I estimate the table height from object dimensions, or from whether the bottoms of the black fingers are at table level? For now, I tentatively assume that the table and basket bases are at z = 0.75 m. I will use a script to intersect pixel rays with assumed height planes and output coordinate estimates.

The estimated object spacing looks plausible, but the table height might be z = 0.78 m. I should use image cues to refine that estimate. The initial end-effector height is z = 0.9215 m, and the fingers extend approximately 0.157 m along environment +Y from link6. In the high camera image, the fingers may be around pixel coordinates (160, 282). The wrist cameras show the bottom tips and the table. I can use the known gripper geometry and its image projection to help calibrate the table plane. The left end effector is at (-0.2995, -0.3523, 0.9215) m in the environment frame. Where does that point project in the high camera image?

The gripper tips appear at approximately (92, 244) and (155, 243) pixels, rather than at x = 124 pixels individually. Could their open width be about 0.066 m in the environment frame? The link6 center projects at about x = 82 pixels; I wonder whether its initial location is near the gripper base at (82, 280) pixels. The quaternion represents a 90° rotation about Z, so the fingers extend along environment +Y. Reading the tips as roughly x = 90 and x = 154 pixels gives a center near (122, 243), which agrees with the projected fingertip center around x = 124. A table height of z = 0.75 m therefore still seems plausible. The left rear watch appears around (123, 245) pixels, or roughly (122, 245), between the gripper tips near (91, 245) and (156, 245). Is it directly beneath the starting fingertip position? The starting end effector is at y = −0.352 m and the tip at y = −0.195 m, whereas the watch is estimated at y = −0.10 m. Their similar image positions can result from their different heights: the tip is at z = 0.921 m and the watch at about z = 0.75 m. To grasp that watch, I tentatively considered moving the end effector from y = −0.352 m to perhaps −0.18 m; using a fingertip target of y = −0.1 m instead gives a link6 target of y = −0.258 m. I would also lower z by about 0.15 m. This seems doable. I should divide the seven objects between the arms for efficient simultaneous work. One option is for the left arm to handle the left watches and left toy, while the right handles the right bar, right watch, right toy, and left bar. Using each arm for nearby objects and then handling the center objects could instead give the left arm both toys and the two left watches, four objects total, and the right arm both bars and the remaining watch, three total. That seems reasonable. Another possibility is for the left arm to pick the left toy and left bar. I should avoid crossing the arms. The main challenge will be choosing grasp orientations for the small, irregular watches and toys. I should inspect enlarged crops, starting with a Python crop of the objects in the high-camera image.

I’ll view the enlarged crop of the initial objects to clarify their shapes and choose suitable grasp points and orientations before moving the arms.

I now identify two wooden rocking horses, three watches with looped bracelets, and two flat chocolate bars. Grasping near each object's center seems appropriate. For a watch, I could pinch the outer edges across its approximately 0.05 m diameter. I am still unsure of the maximum gripper opening. The initial open tips appear about 64 pixels apart. At the tip, the estimated optical depth is 0.5 × (−0.195) − 0.866 × 0.921 + 1.338 = 0.642 m, giving a scale of 449 pixels/m and a separation of about 0.14 m. Using finger positions of 90 and 155 pixels gives 65/449 = 0.145 m. The gap might be about 0.12 m or 0.10 m, although these may be outer-edge measurements; the inner gap could be about 0.08 m. A 0.05 m watch should fit. Keeping the 90° yaw would leave the fingers pointing along environment +Y and closing along X, suitable for pinching across a watch's diameter. The right Snickers bar lies mostly along X, so closing along X at its center may require an opening greater than its roughly 0.12 m length. A yaw of 0° would point the fingers along environment +X and make them close along Y, across the bar's short dimension. I am also considering whether to pitch the wrist downward for a top grasp. The initial orientation has local X pointing horizontally along environment +Y and local Z along +Z. The grippers appear to point forward horizontally, with the fingers at z = 0.921 m. It may be simpler to lower the whole horizontal gripper until the pads reach object height and the fingertips extend beyond the object's center. Are the fingers long, vertically oriented plates? Their shape is still uncertain. A tentative contact location is about 0.12 m forward of link6, rather than at the 0.157 m fingertip extent. Link6 might need to be around z = 0.78 m, and the fingers' vertical extent may be about 0.04 m. Lowering from z = 0.921 m to 0.78 m would also put the tips at 0.78 m. A downward grasp using yaw and pitch is another possibility, but kinematic constraints may make horizontal pinching easier. I initially considered taking the right Snickers bar and left rear watch simultaneously. Assuming a table height of 0.76 m, the rear watch is around x = −0.428 m, or roughly −0.43 m. That seems far left of the starting x = −0.3 m, though a proposed end-effector displacement of −0.13 m in X, +0.12 m in Y, and −0.14 m in Z seems manageable. Is the left arm's base also at x = −0.3 m? The left front watch, at x = −0.257 m, is closer and more accessible, so it may be a better first choice. The bar would still require about a 90° orientation change to close along Y. Could I grip an end while retaining the current orientation? Its image spans approximately x = 402 to 462 pixels, a width of 60 pixels. I first estimated an optical depth of about 1.06 m and a length of 0.226 m, but with z = 0.76 m and y = −0.14 m, the depth is −0.07 − 0.658 + 1.338 = 0.61 m. The scale is then 472 pixels/m, making the 60-pixel length about 0.127 m. Its 14-pixel width is about 0.03 m. With an inner gap perhaps only 0.07 m, pinching along its length seems unsuitable. A yaw of 0° would let me approach from the left, with the bar center at approximately x = 0.237 m and z = 0.77 m. From the right arm's starting x = 0.30 m, y = −0.35 m, I could rotate by −90° and move link6 to x = 0.10 m, y = −0.14 m, z = 0.77 m, putting the forward contact near the bar center. This may be challenging and would need staged rotations within the 1 rad target limit. A diagonal end grasp or pushing the bar into a different orientation is another possibility, but changing yaw seems better. For the left front watch, I can retain the 90° yaw and close along X. With its center around y = −0.19 m, a contact offset of about 0.12 m suggests link6 near y = −0.31 m, x = −0.257 m, z = 0.78 m. One possible approach from the starting pose of approximately (−0.3, −0.352, 0.921) m is to move to (−0.26, −0.32, 0.82) m for five steps, then lower to z = 0.77 m. The fingertip would reach around y = −0.15 m, beyond the watch, while contact could occur around y = −0.18 m at a local forward offset of about 0.13 m. After a verified grasp, the watch belongs in the middle basket, centered around x = 0 m, y = 0.055 m. I could lift to z = 0.94 m, move link6 toward x = 0 m and perhaps y = −0.05 m, which would put the contact center at y = 0.08 m with a 0.13 m offset, then place around z = 0.90 m and open. The basket bottom may be at z = 0.76 m and the watch about 0.02 m tall. Lowering the horizontal gripper to z = 0.80 m could risk hitting the rim. The front rim may be near y = −0.03 m; the basket's front and back appear near image rows 207 and 140, and its Y extent may be about −0.08 to 0.20 m. A possible approach is to carry the object at z = 0.91 m above a rim estimated at z = 0.82 m, then lower the object to z = 0.82 m and release for an approximately 2 cm drop. Does that also imply link6 at z = 0.82 m? That remains tentative. Deep insertion should not be necessary, and placing two or three objects near the same basket center may be fine. I should check the table height with the wrist views after moving. For the first action, approaching the left front watch and the right watch simultaneously is simpler because both can use the current orientation. Their estimated centers are (−0.257, −0.192) m and (0.187, −0.225) m in X and Y. Keeping X aligned and subtracting about 0.13 m from each object's Y gives link6 targets of y = −0.322 m and −0.355 m. A later approach height of z = 0.80 m would lower the grippers about 0.12 m and bring the wrist cameras closer. I considered four steps, but an estimated 0.122 m motion at 0.02 m per step would need about 6.1 steps. Six steps could suit navigation, while the final approach near contact should use only one to three. I will first approach at z = 0.85 m with open grippers for five steps, then inspect before lowering. An alternative right-arm intermediate target of (0.187, −0.345, 0.85) m from (0.3, −0.352, 0.921) m has an estimated distance of 0.138 m and might need seven steps, so five may give only partial progress. I also considered first aligning X at z = 0.86 m for five steps. The arms will remain about 0.44 m apart, which seems safe.

The joints have changed significantly, but the end-effector heights have barely changed. Could the links' contributions to height be canceling out? The left arm's second joint is at 0.636 rad and its fourth joint is around 0.72 rad; perhaps the height will change as the motion continues. The left arm's X and Y positions are close to their targets, but it still needs to descend about 0.08 m. Could a large orientation error explain this? Its measured quaternion, [0.707, 0.01, -0.023, 0.707], is close to the target orientation. I expect another 15 steps toward the same approximate height of z = 0.84 m to produce descent now that the arm is bent. The right arm is still at x = 0.237 m, compared with its target of x = 0.187 m. I will continue for 15 steps.

The grippers are now descending at approximately 0.0013 m per step on the left and 0.0005 m per step on the right. This may take many steps, perhaps 40. Could I lower the target to z = 0.78 m while staying within the 0.25 m distance limit? The distance to that target is about 0.13 m, so the precheck might pass. A larger error would still be subject to the 0.02 m task-increment cap, and scaling the joint steps affects the motion direction. A target of z = 0.78 m would request larger joint changes, but each joint increment is capped at 0.05 rad. The current target is z = 0.835 m, with about 0.065 m remaining on the left. Is the joint cap why a desired translational increment of 0.02 m produces only about 0.001 m of actual motion? Could opposing joint contributions be canceling, making 0.05 rad joint changes produce little movement? Orienting the wrists downward might make reaching the table easier, but that rotation would take time and its benefit is uncertain. I have 1065 control steps remaining for seven objects, approximately 150 per object, so I should use them efficiently. Could the arms be near joint limits at zero joint angles? Does a positive second-joint angle bend the arm backward? My understanding of the six-degree-of-freedom ARX X5 is that the end effector is horizontal when all joints are initially zero. Lowering the gripper should involve rotating shoulder joint 2 and elbow joint 4. Those angles are about 0.6 rad and 0.7 rad, yet z is still about 0.9 m. With the table estimated at z = 0.75 m, I may need joint 2 near 1 rad and joint 4 near 1.5 rad. I will continue for another 15 steps.

The left gripper has a larger orientation deviation, about 0.12 rad, while the right remains close to the aligned orientation. The watches are still visible in the high-camera view, though the left front watch may now be hidden by the gripper. Is the left gripper near that watch? It appears that it may be. I still need to lower the grippers to approximately z = 0.78 m. I am considering another 15 control steps.

The orientations have unexpectedly drifted by about 0.25 rad despite constant targets. Could this be due to controller dynamics, or differences between the local precheck and the actual IK and arm physics? I need to restore the grasp orientations. The wrist views show the watches near the bottom center, between the fingers on the left and right. With the left end effector at z = 0.824 m, the left watch is partly visible at the bottom. The fingertips may also be at z = 0.824 m; if the watch is at z = 0.75 m, they are still about 0.074 m above it. The right end effector is at z = 0.839 m. I should descend to z = 0.775 m. The left arm is offset from its desired position by +0.016 m in X and +0.024 m in Y, so I need to correct those residuals. The right arm's X and Y positions are close to their targets. Could gravity cause orientation errors to accumulate while I keep the target quaternion constant? I expect the orientations to converge. I considered 12 steps for both arms, but I will use 10 steps toward z = 0.775 m.

The right gripper's opening command is now 0.64 even though I commanded gripper_closed = false to keep it open. Could that change be due to a collision, perhaps a right finger contacting the Snickers bar? Its orientation also looks unusual. The left end effector seems stuck at z = 0.821 m, with almost no further descent. The right is at z = 0.817 m and x = 0.158 m, compared with its target x = 0.187 m. Perhaps the table is actually at z = 0.8 m rather than my assumed 0.75 m, and the fingers are contacting it, preventing further descent. The watches are visible at the bottom of the wrist views. If the table is at z = 0.8 m, the object centers might be at z = 0.82 m, so my earlier height assumption could be wrong. A target of z = 0.775 m would then push the grippers into the table, and contact might explain the stalled motion. The right opening command of 0.64 might also be associated with a finger hitting the watch or a bar. These are still hypotheses. I need to determine the table height using the known gripper geometry and the high-camera calibration. Where is the table front in Y, and could the basket bases provide a contact reference? I cannot yet infer the height from the initial fingertip geometry alone; I can locate known points using the finger model, but I do not know the exact mesh. With the current left end effector at z = 0.821 m, I tentatively see its fingertips around (217, 285) pixels in the high view. The watch is around (193, 282) pixels, so the finger bottoms may be at table level. Initially, the fingers were at z = 0.921 m and the left rear watch was behind them at a similar projected location. Now the left gripper is near the front watch, and its fingers may be touching the table around z = 0.82 m. I will project the measured link6 positions and forward fingertip points using the current rotations, then compare those predictions with the image. In observation 72, the left fingertip center may be around (193, 270) pixels. I tentatively see the left gripper body around (190, 276) pixels, with fingers at x coordinates of about 159 and 258 pixels. The right gripper center appears around (420, 300) pixels. Where do the current measured link6 poses and forward tips project?

The orientation tilt puts the forward fingertips below link6: the left tip is at z = 0.772 m and the right at z = 0.792 m. This matches my reading of the left fingers near (220, 260) pixels in the high-camera image. The fingers are pitched downward, with local +X having a negative environment Z component. The left orientation error explains why its tip is at z = 0.772 m even though link6 is at z = 0.821 m. The table could still be at z = 0.75 m. The right watch appears around (415, 298) pixels, while the predicted right fingertip is around (399, 280) pixels. The possible contact point 0.13 m forward of link6 projects near (402, 292) pixels, close to the watch. However, that contact point has environment x = 0.152 m, compared with my estimated watch x = 0.19 m, an offset of 0.038 m caused by the arm's X drift. The right opening command of 0.64 might be related to contact with the watch. I should restore a level orientation and adjust the alignment. But why has the right orientation drifted from the constant target [0.707, 0, 0, 0.707] to [0.68, -0.122, -0.014, 0.722]? Could physical contact with the object or table be causing the measured end-effector orientation to deviate from the commanded joints? Perhaps joints 5 and 6 provide a clue. I will inspect the recorded joint states.

The grippers are now clear. Both watches remain in the same positions in the high-camera view, and no objects have moved. A top-down grasp seems like a better strategy. I will switch the left arm to a downward orientation while perhaps keeping the right arm in its current orientation. There are 1018 control steps remaining, which should be enough, but I should use them efficiently and work out the exact orientation and control. I will use SciPy to compute the downward-facing quaternion. I want local X to map to (0, 0, -1), local Y to (-1, 0, 0), so the fingers close along environment X, and local Z to (0, 1, 0). This is a right-handed frame because (0, 0, -1) × (-1, 0, 0) = (0, 1, 0). I will construct the rotation matrix from these vectors and obtain its quaternion with SciPy.

Quaternions q and −q represent the same orientation, so [-0.5, 0.5, -0.5, -0.5] is equivalent to [0.5, -0.5, 0.5, 0.5], which is also the final Slerp output. The intermediate quaternion is [0.614, -0.350, 0.350, 0.614]. I estimate its orientation distance from the left arm's current quaternion, [0.711, -0.046, 0.084, 0.697], at about 0.86 rad, within the 1 rad limit. I estimate the right arm's distance to the intermediate orientation at about 0.78 rad. I can rotate both grippers while raising them. Their local X axes will pitch downward. Fully rotating downward with link6 at z = 0.845 m would put the fingertip at about z = 0.69 m, below the table, so I need to raise link6 to roughly z = 0.98 m before completing that rotation. The fingers currently point mostly horizontally with a slight downward tilt. At the intermediate orientation, local X will likely have environment +Y and −Z components. I estimate that the tip would drop by about 0.07 m to z = 0.775 m, close to but above the table. Raising link6 simultaneously to z = 0.95 m would put the tips around z = 0.88 m, which seems safe. I will target the left link6 at [-0.257, -0.322, 0.95] m and the right at [0.187, -0.355, 0.95] m, both with the intermediate quaternion and open grippers. The target distance is about 0.11 m and the orientation change is less than 1 rad, so the precheck may pass. I will use 12 steps for both arms. Afterward, I may complete the downward rotation at z = 0.98 m. This may be an easier grasp pose.

The arms did not lift, with z still around 0.845 m, although their orientations moved slightly toward the target. Perhaps z = 0.95 m is unreachable at these X and Y positions with the requested rotation. The precheck passes, but the actual motion may be stalling because the joints are at their limits. Are the arms at maximum reach in this configuration? Joint 2 is above 2 rad, and lifting from this low pose may require joint 4 to exceed a limit of about 1.8 rad while maintaining Y. I considered moving Y backward or forward to enable the lift. Retracting toward the body seems more promising. My target y = −0.32 m is near the current position and toward the front; moving to a more negative Y, such as −0.42 m, may allow the arms to rise. Initially, z was about 0.92 m at y = −0.352 m with zero joint angles, whereas lowering has bent the elbow to about its 1.8 rad maximum. I should try retracting to y = −0.45 m. A top-down grasp may not require a wrist height of z = 0.95 m if z = 0.9 m above the object is enough, but I first need to retract to lift. I will plan to move both arms to y = −0.45 m and z = 0.96 m while keeping X the same. I considered restoring a level orientation to simplify the motion. What is the current orientation distance to the intermediate quaternion? Rather than add another rotation now, I can explicitly use each arm's current measured quaternion and hold its orientation during the retraction. I will retract and lift for 15 steps.

Both arms are now rising as they retract. I will continue retracting and lifting them for another 15 control steps.

The arms have still barely retracted along Y. Perhaps joint 1 or other joints are at their limits; I should inspect the joint states. This motion could take many more steps. The wrists are rotating downward, and the watches now appear centered and fully visible in the wrist views. Perhaps I can grasp them with the current pitch rather than completing a fully top-down rotation. The left link6 is at z = 0.876 m, but the fingers extend forward and downward, so what is the fingertip height? I will compute the rotation matrices from the current measured quaternions to inspect the finger directions.

The joint configuration has changed drastically: the left arm's joint 2 is now at 0.74 rad rather than about 2.1 rad, and joint 4 is near 0 rad. Retraction reset the elbow configuration through a singularity. The left link6 height is 0.876 m, and the finger axis has a downward component of about 0.57, putting the fingertip at z = 0.786 m. Thus the fingers are near the table even though link6 remains high. With the current left-arm Y position at −0.338 m and the watch around y = −0.19 m, the forward tip is at approximately y = −0.208 m, z = 0.786 m. This may already be close to a grasp-ready pose. In the high-camera view, the watch is visible around (193, 282) pixels and the left gripper tip appears around (190, 277) pixels. The watch also appears centered in the wrist view. I may not need a fully downward orientation; the current tilt of about 35° seems suitable. For the right arm, the finger-axis components are approximately y = 0.906 and z = −0.424. Its fingertip is around y = −0.225 m, z = 0.818 m. The right watch is also around y = −0.225 m, but its top is estimated at z = 0.77 m, leaving the tip about 0.05 m too high. I should lower the right gripper or pitch it farther downward. The left watch's center is likely at (−0.257, −0.192, 0.76) m. A possible contact point 0.13 m forward of link6 is at approximately (−0.242, −0.231, 0.802) m, which is too high and too near the robot along Y. At a forward offset of 0.157 m, the fingertip is around y = −0.208 m, z = 0.786 m. The watch may extend from y = −0.22 m to −0.16 m. The contact pads span forward offsets of about 0.07–0.15 m, corresponding to heights of approximately 0.836–0.791 m, so they might pinch the upper portion around z = 0.79 m. Link6 is at x = −0.243 m versus the estimated object center at x = −0.257 m; the 0.014 m offset is within the band's radius. Perhaps I could close the left gripper now. Its open gap runs along environment X, and the watch center appears at (318, 253) pixels in the wrist view, centered between the finger edges. Is that enough to close safely? A small forward and downward adjustment should put the pads more securely around the band. I will target the left link6 at (−0.257, −0.31, 0.85) m, moving forward by 0.028 m and lowering by 0.026 m while holding its current quaternion. This would put the fingertip around y = −0.18 m, z = 0.76 m, with contact near the watch center. For the right arm, a target of (0.187, −0.36, 0.83) m with its current quaternion would put the fingertip around y = −0.218 m, z = 0.763 m. My plan is to lower both by about 2–3 cm and align them. The final approach should use only 1–3 control steps; I will use 3 with both grippers open.

The last 3 steps produced only a small movement, as expected. The left link6 still needs to descend 0.018 m to its target height, and the right needs to descend 0.039 m. Over those 3 steps, their Z positions changed by −0.008 m and −0.016 m respectively, with the right descending farther. I considered using 10 steps, or perhaps 6, for the remaining approach, but the grasping instructions call for short actions of 1–3 steps to maintain stability. I can repeat 3-step actions as needed. I will take another 3 steps toward the same targets with both grippers open.

The left arm is nearly at its target, while the right still needs to descend another 0.027 m. In the left wrist view, the watch center now appears at (330, 285) pixels. The fingers are at approximately x = 125 and x = 520 pixels, with their tops at y = 260 pixels and the pads extending downward. Is the band between and forward of the tips? It is likely ready for grasping. In the right wrist view, the watch center appears at (270, 320) pixels, about 50 pixels left of the possible gripper center at x = 320 pixels. Does link6 need to move left? Its measured X position is 0.190 m, while my estimated watch X position is 0.187 m, so why is the watch off-center in the camera? This could reflect the wrist camera's offset or rotation, or the watch might actually be at x = 0.17 m because my table-height assumption was wrong. I should refine the positions using the actual watch size and table height. The right watch face appears at the bottom of the wrist image, with the band center around (270, 320) pixels; the Snickers bar is centered around (400, 120) pixels. The end-effector orientation gives local X only a small environment-X component, about 0.01, so I would not expect much camera shift from that. Could the wrist camera's extrinsic translation include a local offset from the end effector? I could project the estimated object coordinates into the wrist image using its calibration and compare them with the observed pixels, then solve for the object position using a known Z height. Alternatively, I can triangulate the same object point exactly from its high-camera and wrist-camera pixels, since both cameras are calibrated and synchronized. I should identify matching points to determine the object centers in 3D. For the left front watch, a distinctive point on the band or face would work. Its face may be around (192, 283) pixels in the high view. In the initial crop, the silver elliptical face was centered around (193, 281) pixels, and it appears unchanged in observation 130. In the left wrist view, the clock-face center appears around (360, 335) pixels. I need to select the same precise point, such as the clock center, in both views. At the high image's original resolution, that small point might be around (196, 284) pixels. I will create enlarged crops of the high and wrist images to inspect these correspondences.

I’ll inspect the enlarged high-camera crop to locate a distinctive point on the front-left watch that can be matched in the wrist view, helping refine its position before grasping.

The front-left watch is partly occluded by the gripper in the high-camera view. Its face may be near (199, 280) pixels. The crop covers original-image x coordinates from 155 to 225 and is displayed at 210 × 165 pixels. I am unsure whether the watch's left edge is near original-image x = 187 pixels. The band appears to span crop x coordinates of about 108–181, corresponding to original-image x coordinates of about 191–215 and y coordinates of about 270–284. Its face may be hidden by the gripper body near (196, 282) pixels. The watch was initially near (193, 282) pixels. Now the gripper body appears to span x = 132–195 near y = 276 pixels, while the band spans roughly x = 190–215 near y = 270 pixels. Could the gripper have pushed the watch? In observation 124, the watch appeared near (190, 280) pixels behind the gripper, compared with its initial center near (193, 282). It may still be in the same position. The left gripper body obscures its left half, while the wrist view shows the entire watch centered.

The left watch looks large and close in the wrist view. The fingers are around x = 125 and 520 pixels, and the band's outer edges are around x = 229 and 437 pixels. I am unsure of the physical gap; the camera scale might be about 2000 pixels/m, and the watch diameter might be 0.055 m. The open inner gap looks large relative to the watch. Should I close at the current pose? Only the triangular tops of the black fingers are visible, with their contact pads extending below. Their inner edges are near x = 125 and 520 pixels at y = 260 pixels, while the watch edges are around x = 230 and 438 pixels over y = 200–370 pixels. The watch therefore appears to be between the fingers, but their contact height relative to the watch is still uncertain. The fingertips appear near y = 257 pixels, and the bottoms extend beyond the image. I could close now and then test the grasp with a small lift. The right watch is left of center, suggesting that the gripper's X position may be off by about 0.01 m. The watch still appears between the fingers, with its edges around x = 170 and 355 pixels and the inner finger gap spanning x = 125–520 pixels, but closing could push it aside unless I center it. Its center is around x = 262 pixels versus the image center at x = 320 pixels, so I could shift the gripper left in the image by 58 pixels. Does image +X align with environment X? The first row of the camera extrinsic rotation is approximately [1, …], suggesting a negative world-X shift of about 58/f times the depth. If the watch depth is about 0.20 m, that gives approximately 0.029 m. From the right arm's current x = 0.190 m, this suggests a target near x = 0.16 m. Did the earlier target of x = 0.187 m and measured position of x = 0.158 m put the watch at the center in the high-camera view? Was its wrist-image center around x = 450 pixels in observation 72? I should inspect the right wrist crop now. A simpler adjustment may be to shift the right gripper by −0.02 m in X to x = 0.17 m. The left watch center is around x = 330 pixels, close to 320 pixels, so its alignment seems acceptable. I am considering closing the left gripper for 1 step while approaching with the right gripper toward x = 0.17 m and z = 0.83 m for 3 steps. Since both arms share the action duration, I could instead close the left gripper and approach with the right over the same 3 steps, then inspect.

The center of the right watch’s outer band appears to be at approximately x = 150 + (300/3) = 250 pixels and y = 230 + (250/3) = 313 pixels in the original wrist image. This puts it about 70 pixels left of the image center. I will shift the right gripper by −0.03 m along environment X, setting its target X position to 0.16 m, and close the left gripper.

The left fingers have closed against the watch’s outer sides at approximately x = 220 and 420 pixels, with the watch touching both fingers between them. This looks good. Perhaps 2 more steps will complete closure while the right gripper continues descending. The left opening command decreased from 1 to 0.376 over 3 steps, implying a rate of 0.208 per step and about 2 more steps to reach 0. Could a physical gap remain because of contact? The documentation says this value is an opening command, not a measured finger gap. I will hold the left pose and continue commanding closure for 2 more steps, while continuing the right approach for 3 steps.

The left opening command has stopped at 0.375, which I take as a good sign of contact. The right watch appears centered near x = 350 pixels, close to the wrist image center at x = 320 pixels. The right link6 is at z = 0.843 m and still needs to approach its target of z = 0.83 m, so I will continue for another 3 steps. At the same time, I will test the left grasp with a small lift, increasing its target Z by 0.025 m to 0.887 m while keeping X, Y, and the quaternion unchanged. I will use 3 steps for this lift and the right arm’s continued approach.

The left watch moves with the gripper: it stays in the same position in the wrist view and is no longer at its original location in the high-camera view. I conclude that it is held. The right watch has shifted right in the wrist view as the gripper moved left, and its center now appears at x = 420 pixels rather than the image center at x = 320 pixels. I seem to have overshot the X alignment. At a right link6 X position of 0.17 m, the watch center was around 350 pixels; at 0.159 m, it appears around 420 pixels. A 10 mm shift producing about 70 pixels of image motion seems plausible. The right arm's Y and Z positions also changed. I should target x = 0.167 m while holding z = 0.837 m. Could I close there? The inner finger edges currently appear at x = 160 and 520 pixels, while the watch's outer edges span x = 305–535 pixels, leaving one edge beyond the right pad. A rightward gripper correction of +0.008 m to x = 0.167 m should center it. I initially considered 2 steps of open-gripper alignment followed by 3 steps of closure. I can continue lifting the left watch while the right gripper aligns, preparing to transport it to the middle basket. The left link6 is at z = 0.876 m; I am considering lifting to z = 0.93 m and retracting Y to perhaps −0.38 m to avoid the elbow limit. The estimated motion distance is 0.067 m, within the command limit. I considered 6 navigation steps, but will use 5 because the object is newly held, although the space after lifting appears clear. Both arms share the action duration, so rather than using 2 steps for the right arm separately, I will use 5 steps to lift the left arm and align the open right gripper.

The right watch’s center appears near x = 380 pixels, still slightly right of center. I could target the right gripper at x = 0.162 m. The watch’s outer right edge is near x = 493 pixels, within the right finger’s inner edge at x = 520 pixels; its left edge is near x = 267 pixels, compared with the left finger’s inner edge at x = 125 pixels. During closure, the right pad would move left and the left pad would move right. The offset may cause the right pad to contact first and push the watch left toward the center, so closure might center it. I prefer a target of x = 0.163 m. The right wrist quaternion shows a slight tilt and roll, but the alignment looks acceptable. The left watch remains held, and I can begin transporting it to the blue middle basket. I estimate the contact location at a local forward offset of about 0.13 m from link6. With the current local X axis approximately (0.006, 0.823, −0.569), the watch’s environment-frame position is approximately link6 + 0.13 times that axis, or (−0.251, −0.224, 0.819) m. Its height is therefore about 0.82 m. It appears around x = 196 pixels in the high-camera view; I have not identified its y pixel coordinate. For the blue basket center at approximately (0, 0.055, 0.78) m, I need to subtract the held-object offset to choose the link6 target. I initially considered approximately (−0.001, −0.052, 0.84) m if releasing the object at z = 0.84 m above the basket, or perhaps a link6 height of 0.86 m. However, the estimated vertical offset at 0.13 m forward is −0.074 m, and the object is currently at z = 0.819 m. Releasing the object at z = 0.85 m would require link6 at z = 0.924 m. I will therefore aim for link6 near (0, −0.05, 0.93) m with the same quaternion. That target requires approximately 0.25 m in X, 0.28 m in Y, and 0.04 m in Z, for a total distance of about 0.38 m, exceeding the 0.25 m per-action limit. I need intermediate targets. First, I could lift and retract to (−0.15, −0.30, 0.94) m, about 0.11 m away, over 10 steps. From there, (0, −0.05, 0.93) m would still be about 0.295 m away, so I could use another intermediate target at (−0.05, −0.20, 0.94) m, about 0.15 m away, before the final approach. I can begin moving the left arm while the right grasps its watch, then continue the left arm’s transport. I am considering 3 steps for right-gripper closure and 8 steps for the left lift.

The right fingers appear to contact the watch band, but the band is tilted and may have been pushed. The reported opening command is nonzero at 0.384. I will test the right grasp with a small lift while continuing to move the secured left watch toward the blue middle basket, targeting the left link6 at (−0.05, −0.20, 0.94) m. For the right arm, I plan to increase Z by 0.025 m to a target height of 0.867 m and decrease Y by 0.02 m. I will use 6 control steps.

Both watches appear to be held. The right watch seems to have disappeared from its original high-camera position near (415, 298) pixels, though there may still be a small silver shape near the gripper at (415, 299) pixels. The stronger evidence is that the watch stays fixed relative to the wrist camera while the background shifts, so I conclude that it is held. The left arm is progressing slowly through the larger move and needs another action. In 6 steps it moved only about 0.04 m along X, with 0.116 m still remaining along X to the target. I could now use 10 navigation steps: I estimate the held object's height at z = 0.85 m and the table objects at z = 0.78 m, giving 0.07 m of clearance. However, the left path crosses above the left toy near (−0.15, −0.10) m in X and Y. With the held object around z = 0.85 m and the toy around z = 0.80 m, that could be close. I considered lifting link6 to z = 0.98 m and retracting to y = −0.3 m before crossing. The existing link6 target of (−0.05, −0.2, 0.94) m would put the held object at approximately z = 0.866 m, which I judge sufficient above an estimated toy maximum height of z = 0.82 m, so continuing toward that target seems acceptable. I plan to lift the right link6 to z = 0.92 m and retract it to y = −0.43 m while keeping its orientation unchanged. I am considering 8 steps for that motion and for continuing the left arm toward (−0.05, −0.2, 0.94) m.

Is the left watch near the right wooden toy in the high-camera view? The left link6 is at (−0.08, −0.221, 0.935) m, and I estimate the held watch at (−0.079, −0.114, 0.861) m. The right toy is estimated at (0.03, −0.11, 0.79) m. With X positions of approximately −0.08 m and 0.03 m, the gap is about 0.11 m, so I judge there is no collision. Moving the left link6 to (0, −0.07, 0.94) m would put the held watch at approximately (0, 0.037, 0.866) m, above the blue basket. The basket’s front rim may be around y = −0.05 m; the watch should pass over it. I will use 12 steps toward this target, an estimated distance of 0.174 m. For the right arm, I am considering a lift and retraction to (0.16, −0.43, 0.93) m, about 0.07 m away, over 10 steps. I can execute both motions simultaneously over 12 steps.

Did the left watch rotate because it collided with the basket rim? The opening command changed from 0.375 to 0.314, and the watch now appears vertical in the wrist view rather than as a horizontal ring. The gripper may have contacted the blue basket’s front rim during the move, causing the watch to rotate. Is the left gripper near the basket’s left side in the high-camera view? I estimate the held watch’s current position at (−0.022, −0.003, 0.864) m. The front rim may be at y = −0.04 m with its top at z = 0.85 m. Although the watch’s center is at z = 0.864 m, the lower part of its band may be at z = 0.82 m and could have hit the rim. The watch has rotated upward but remains held. I could lift the left link6 to z = 1.0 m and move it to y = −0.06 m, putting the watch at approximately y = 0.05 m. Its current x = −0.023 m is already near the basket center. The earlier target height was z = 0.94 m, but the measured height is 0.938 m. Should I lower it? Raising it by about 0.04 m and then moving it forward by 0.04 m seems better. I will target the left link6 at (0, −0.07, 0.99) m, an estimated distance of 0.09 m. The right arm can begin moving toward the blue basket, but I need to avoid a collision between the arms. The left arm is approximately at x = 0 m, y = −0.11 m, z = 0.94 m, while the right is at (0.164, −0.408, 0.917) m, still well separated. I will move the right arm to the intermediate position (0.12, −0.30, 0.95) m rather than directly to the basket. I am considering 12 steps for the right arm and 8 for the left.

The left arm has reached its target exactly. The wrist view shows the basket below, though the held watch may be near the front edge. Its actual offset from link6 is unknown after the rotation. I estimate the left fingertip position at a forward offset of 0.13 m as (0.001, 0.037, 0.916) m. With the basket bottom at approximately z = 0.76 m and the object at approximately z = 0.9 m, I judge the 0.14 m drop safe. The estimated placement is near the center, at x = 0 m and y = 0.037 m, so I will release the watch now. The right arm still needs to lift. I am considering opening the left gripper for 4 steps while holding its pose and continuing the right arm toward the intermediate target (0.08, −0.25, 0.96) m. I need to consider an arm collision because the left arm will remain over the basket center after release, but the right staging position at x = 0.08 m and y = −0.25 m appears sufficiently separated. I am considering 6 steps for the combined action.

The released watch is inside the blue basket. I should move the left arm away toward either the left toy or the remaining rear-left watch while the right arm places its watch. I will prepare to grasp the rear-left watch. My initial rear-left watch estimate was (−0.428, −0.106, 0.75) m, assuming the table was at z = 0.75 m. I can refine that assumption using the successful front-left grasp. Its link6 pose was (−0.253, −0.325, 0.862) m; an estimated forward contact offset of 0.13 m gives an object center near (−0.252, −0.218, 0.788) m. Is that consistent with the wrist view? The original high-camera object position was (193, 282) pixels. Would projecting it at z = 0.788 m give x = −0.264 m? The earlier projection at z = 0.76 m gave x = −0.257 m and y = −0.192 m; at z = 0.788 m, I estimate x = −0.246 m and y = −0.208 m. This seems consistent with my inferred object position, suggesting a table height around z = 0.77 m and a watch center at z = 0.788 m. For the rear-left watch at high-camera coordinates (123, 245) pixels, using z = 0.785 m gives approximately x = −0.404 m and y = −0.133 m. My earlier X estimate at z = 0.76 m was −0.428 m, but the actual X position may be nearer −0.404 m. I should refine this through wrist-camera triangulation during the approach. I will retain the left wrist’s pitched orientation. With contact 0.13 m forward along the approximate local X direction (0.006, 0.823, −0.569), the link6 target is the object position minus that offset: approximately (x − 0.001, y − 0.107, z + 0.074) m. This suggests a rear-left pregrasp target near (−0.405, −0.24, 0.862) m, comparable to the successful front-left link6 pose of (−0.253, −0.325, 0.862) m and its estimated object center of (−0.252, −0.218, 0.788) m. From the release pose (0, −0.07, 0.99) m, the distance is about 0.43 m, so I need intermediate poses. I considered (−0.20, −0.15, 0.99) m followed by (−0.36, −0.22, 0.90) m. Meanwhile, I can bring the right watch toward the blue basket, perhaps targeting (0.03, −0.065, 0.99) m, while checking that the arms do not cross near x = 0 m. The right held watch is currently around x = 0.115 m, and the left arm is at x = 0 m; both are high. For a right link6 target of (0.03, −0.07, 0.99) m, I initially estimated a distance of 0.266 m; from the current pose (0.115, −0.326, 0.95) m, I estimate 0.273 m, exceeding the 0.25 m limit. I will instead use (0.04, −0.15, 0.98) m, about 0.194 m away, before the final approach. For this action, I will move the left arm to (−0.22, −0.17, 0.99) m. Is that exactly 0.25 m away? The distance is approximately sqrt(0.22² + 0.10²) = 0.242 m, so it is within the limit. I should also check whether the right held watch’s path crosses above the right toy. I estimate the watch’s current position at (0.116, −0.218, 0.876) m; the Snickers bar is near (0.237, −0.14) m in X and Y, so I judge it clear. At the proposed right link6 target, I estimate the watch at (0.04, −0.043, 0.906) m, safely above the basket rim. I will use 12 steps to move the left arm away and advance the right watch.

The left arm is moving slowly: it has moved about 0.1 m along X toward the requested 0.22 m shift, while the right arm is near its target. The left wrist view shows no held object, with the blue and white baskets visible. In the high-camera view, the arms look close together, but the grippers are at approximately x = −0.1 m and x = 0.054 m. I judge their estimated 0.154 m separation safe. I will continue moving the left arm toward the remaining watch, targeting (−0.32, −0.21, 0.96) m, an estimated 0.244 m from its current pose. I will move the right arm to (0.015, −0.07, 0.99) m, an estimated distance of 0.119 m, to bring its watch over the blue basket for release. I will use 12 control steps.

The right watch is above the blue basket. I will open the right gripper to release it, allowing 5 steps for release. I considered continuing the left arm to (−0.405, −0.24, 0.90) m, an estimated distance of 0.184 m with a descent of 0.071 m. Is that safe? The left open fingers are currently over the white basket, with link6 at (−0.244, −0.179, 0.971) m. I estimate the fingertip at y = −0.05 m and z = 0.881 m, above the white basket rim at approximately z = 0.82 m. At the proposed lower target, the fingertip would be around y = −0.11 m and z = 0.81 m, close to the remaining left watch’s estimated top at z = 0.79 m. I should instead use the higher pregrasp target of (−0.405, −0.24, 0.93) m and inspect before approaching farther. I estimate that distance at 0.184 m and am considering 12 steps, with the right gripper open.

The right wrist view shows the second watch in the blue basket. The remaining watch appears left of center at approximately (125, 415) pixels in the left wrist view, so I need to move the left gripper toward negative X and perhaps forward. The left link6 is currently at (−0.346, −0.22, 0.944) m with a pitched orientation, and the watch is likely near (−0.407, −0.13, 0.785) m. I estimate the finger contact point 0.13 m forward of link6 at (−0.345, −0.113, 0.87) m, above and to the right of the watch. A negative-X adjustment of about 0.05 m seems appropriate, so the existing X target of −0.405 m looks good. With link6 at y = −0.24 m and z = 0.93 m, I estimate contact at y = −0.133 m and z = 0.856 m, still about 0.07 m above the watch. I should eventually lower link6 to z = 0.862 m. I could first inspect at (−0.405, −0.24, 0.90) m, where contact would be around z = 0.826 m, compared with an estimated watch top at z = 0.80 m. While the left arm approaches the watch, I can prepare the right arm for the Snickers bar. I could instead pick the right wooden toy first, but I planned to use the right arm for the bars. Its release is complete, and its link6 is now at (0.017, −0.074, 0.989) m above the blue basket. The current pitched orientation closes the fingers along environment X while they extend forward and downward. The Snickers bar lies roughly along environment X, so I need a 90° yaw change to close across its short dimension along Y. I want an orientation with local X pointing roughly along environment +X and −Z, allowing an approach from the bar’s left side, and local Y closing along environment Y. My starting rotation estimate has local X = (0.006, 0.823, −0.569) and local Y = (−1, 0.015, 0.011). I want local X approximately (0.823, 0, −0.569), and perhaps local Y = (0, −1, 0). Applying a −90° rotation about environment Z to the current rotation would instead give local X approximately (0.823, −0.006, −0.569) and local Y approximately (0.015, 1, 0.011). Closing along +Y rather than −Y is acceptable. The fingers would point mostly along +X and approach the bar from the left. The right arm’s base is at approximately x = +0.3 m. A link6 position near x = 0.13 m, to the left of the bar near x = 0.237 m, seems reachable. The −90° yaw change is 1.57 rad, so it needs an intermediate rotation of about 0.785 rad. I can rotate while the gripper is high and moving. I will calculate the intermediate quaternion by applying Rz(−45°) to the current quaternion, then calculate the final quaternion using Rz(−90°). I considered moving directly toward link6 x = 0.13 m and y = −0.14 m. Using the bar’s high-camera location of (432, 259) pixels and an assumed height of z = 0.78 m gives an estimated bar center at x = 0.232 m and y = −0.151 m. With contact 0.13 m forward along a local X direction of (0.823, 0, −0.569), the corresponding link6 target is approximately (0.125, −0.151, 0.854) m. However, descending directly from (0.017, −0.074, 0.989) m toward that target would cross above the right toy near x = 0.03 m and y = −0.11 m, creating a collision risk with the open gripper. I should first retract to a high staging pose at (0.17, −0.30, 0.98) m while making the intermediate rotation, then approach the bar from the front-left. Picking the toy first with the current orientation would require the right arm to cross toward the white left basket, which seems inefficient and risky, so I prefer to continue with the bars. The left watch’s proposed grasp target is (−0.405, −0.24, 0.862) m, about 0.107 m from the current left link6 pose. I am considering 10 navigation steps followed by 3 closure steps, with the right arm moving to its high staging pose using the intermediate quaternion. First, I will calculate the right wrist quaternions.

The desired final right-wrist quaternion is [0.977, −0.025, 0.213, 0.002] in wxyz order. Is this orientation mostly a rotation about X? Its local X axis points approximately along (0.823, −0.006, −0.568) in the environment frame, as intended. The rotation from the current orientation to the intermediate orientation is about 0.785 rad. The proposed right link6 target of (0.17, −0.30, 0.98) m is about 0.277 m away, exceeding the 0.25 m limit. Its X and Y changes are +0.153 m and −0.226 m, with an estimated horizontal distance of 0.273 m. I will instead choose (0.14, −0.25, 0.98) m, about 0.217 m away. For the left arm, I will use the lower pregrasp target of (−0.405, −0.24, 0.89) m. I considered 8 steps, but the instructions call for 3-step actions during the final approach. Another option is 6 steps toward z = 0.89 m followed by inspection, while the right arm takes 10 steps to move and rotate. I will use 10 steps for both arms; the left may reach z = 0.89 m during that action.

The remaining left watch appears centered at x = 262 pixels rather than 320 pixels, an offset of 58 pixels to the left, with link6 at z = 0.89 m. I should shift the gripper left by perhaps 0.015–0.02 m and lower it by 0.028 m. The current X target is −0.405 m, but the watch’s world X position may be around −0.423 m, closer to the initial estimate of −0.428 m, suggesting a gripper X target near −0.425 m. The Y alignment may already be good, since the watch center is at y = 320 pixels. For the previous left watch, the wrist-image center was at x = 330 pixels with link6 at x = −0.253 m; the remaining watch’s center near x = 263 pixels suggests that link6 should be around x = −0.42 m. I will target the left link6 at (−0.423, −0.24, 0.862) m and use 3 steps for the final approach. The right wrist is still rotating, but its measured X and Y position is only (0.068, −0.141) m rather than the staging target of (0.14, −0.25) m. Rotation may be consuming the available joint increments. I plan to continue toward the staging position (0.14, −0.25, 0.98) m with the final wxyz quaternion [0.977, −0.025, 0.213, 0.002]. I estimate the position distance at 0.132 m and the remaining rotation at 0.58 rad, and initially considered 12 steps. Both arms share the action duration, so giving the right arm 12 steps would also leave the left gripper open at its final target for 12 steps. Could it drift or accidentally push the watch if it reaches contact early? I could first use 3 steps for the left approach while holding the right arm, then navigate the right arm separately. Letting both move for 12 steps might also be acceptable, but I prefer to use 3 steps for both now and repeat as needed.

The validation rejected the right target because its orientation distance exceeds 1.0 rad. The right wrist has only moved partway toward the earlier intermediate orientation, so the remaining rotation to the final target may be about 1.1 rad, perhaps 1.03 rad. The current right-wrist quaternion is [0.823, -0.134, 0.162, 0.527], and the desired final quaternion is [0.977, -0.025, 0.213, 0.002], both in wxyz order. I will calculate their angular distance and use Slerp to choose an intermediate orientation. A halfway orientation would be a suitable alternative to commanding the final orientation directly.

Shouldn’t the rotation from the planned intermediate quaternion, whose w component is 0.902, to the final orientation be about 0.785 rad? The calculated distance from the current measured orientation to the final orientation is 1.135 rad. Could the wrist have progressed in a different rotational direction? The original right-wrist quaternion at obs_000227 was [0.689, -0.168, 0.133, 0.692], and the final target is [0.977, -0.025, 0.213, 0.002], both in wxyz order. Their orientation distance is 1.571 rad. At obs_000237, the measured quaternion is [0.823, -0.134, 0.162, 0.527]. I would have expected its distance to the final target to be about 0.87 rad. Should I calculate that again?

The left watch is now well centered at x = 315 pixels. Its band’s outer edges span x = 215–413 pixels, between the fingers’ inner edges at x = 125 and 520 pixels. The left link6 is at z = 0.868 m, slightly above the target of 0.862 m. Could I close now? This is similar to the previous successful left grasp at z = 0.862 m; being 6 mm higher may be acceptable if I close while continuing the small descent. I will use 3 steps to close the left gripper and lower it toward the target while the right gripper continues rotating toward its intermediate orientation. Based on the earlier closure, I expect the left opening command may reach about 0.376 after those 3 steps.

The left watch appears secure with an opening command of 0.375. I will test the grasp with a 3-step lift toward a link6 height of z = 0.887 m while the right arm continues toward its intermediate quaternion. Then I will transport the watch.

The third watch is held. I should transport it to the blue middle basket while the right arm prepares to grasp the chocolate bar. The right wrist is still some way from the final wxyz quaternion [0.977, -0.025, 0.213, 0.002]; I estimate the remaining orientation change at perhaps 0.79 rad, or around 0.77 rad now. I will continue toward that orientation and the staging position (0.14, -0.25, 0.98) m for 12 control steps. For the left arm, I will lift and begin moving toward the blue basket, going from the measured link6 position (-0.423, -0.249, 0.887) m to (-0.30, -0.25, 0.96) m. I estimate the distance at 0.15 m and judge the target safe. I am considering 10 control steps for this motion.

The chocolate bar appears near the bottom center of the right wrist view, around (340, 450) pixels. The right wrist has not yet reached its final orientation. With its current wxyz quaternion [0.926, -0.09, 0.186, 0.316], I estimate that its local X axis points approximately along (0.66, 0.46, -0.59) in the environment frame. Completing the rotation should align the fingers toward environment +X while keeping the bar in view. My next left link6 target is (-0.15, -0.22, 0.98) m, at an estimated distance of 0.171 m. I will also continue the right wrist toward its final quaternion at the same staging position. Is the left watch’s path clear of the white basket? I estimate its current position at (-0.317, -0.143, 0.875) m, with the white basket’s front edge at y = -0.05 m, so I judge it clear. Moving rightward above the left toy near x = -0.15 m, y = -0.1 m with the watch at about z = 0.9 m also seems safe. I will use 12 control steps for both motions.

The left arm is moving slowly and has not yet reached its X target of −0.15 m. The right wrist has not reached the final wxyz quaternion [0.977, −0.025, 0.213, 0.002], but I estimate its remaining orientation error at about 0.39 rad. The chocolate bar appears around (230, 420) pixels in the right wrist view, with its length vertical in the image. That looks suitable for pinching its width horizontally, though I am still considering whether local Y, the closing axis, maps horizontally in this view. Its center is about 90 pixels left of the image center; another approximate reading is (225, 430) pixels. I want to center it horizontally before grasping. The right link6 is currently at x = 0.145 m. With local X pointing mostly along environment +X, would moving along +X shift the bar left in the image? I should determine the camera-axis relationship once the wrist reaches its final orientation. The camera’s right axis may be approximately −local Y. Initially, local Y pointed along environment −X while image right pointed along environment +X, consistent with that relationship. If image right is −local Y, moving the gripper along +local Y should shift the object right in the image. I am still unsure of the current local Y direction and should compute it rather than assume it points along −Y. At the final orientation, after the −90° yaw rotation from the original pose, local Y is approximately (0.015, 1, 0.011), pointing mostly along environment +Y. Image right would therefore point approximately along environment −Y, so moving the gripper along environment +Y should shift the bar right in the image. The estimated bar center has environment y = −0.15 m, while link6 is at y = −0.239 m. The bar is ahead of link6, with differences of about 0.09 m in both X and Y. Once local X points along environment X without a Y component, link6 should have approximately the same Y coordinate as the bar. Moving Y by about +0.09 m might shift the bar substantially right in the image. This supports my planned link6 Y target of −0.151 m. I will use a high right pregrasp target of (0.125, −0.151, 0.94) m with the final quaternion. At link6 z = 0.94 m, the estimated vertical contact offset of −0.074 m puts contact at z = 0.866 m, above the bar at approximately z = 0.78 m. The eventual grasp height for link6 would be z = 0.854 m. I estimate the motion to the high pregrasp pose at about 0.09 m with a rotation of about 0.4 rad, and considered 10 steps. The left arm will continue carrying its watch toward (−0.05, −0.15, 0.99) m, about 0.18 m away. I will use 12 steps for the combined motion.

The right arm has reached its target exactly, and the bar appears well centered at approximately (285, 400) pixels in the wrist view. Is the left watch over the blue basket’s left rim? I estimate its current position at (−0.081, −0.06, 0.91) m, above the front-left area, though I am unsure of the Y coordinate of the basket interior’s front edge. I will move the left link6 to (0, −0.07, 0.99) m, an estimated distance of 0.124 m. For the right arm, I will descend to a link6 height of z = 0.866 m, putting the estimated object contact height at z = 0.792 m. The bar center may be around x = 0.232 m, y = −0.151 m, which looks appropriately aligned. I considered 3 steps for the right descent and 10 for the left motion, but both arms share the action duration. A 10-step action might leave the right arm holding at its target after the first 3 steps, perhaps stably, but it would still conflict with the instruction to use 1–3 steps per action throughout grasping. I will use 3 steps for both arms and continue afterward. There are 817 control steps remaining, which should be enough. The right arm needs to descend 0.074 m; I expect about 0.018 m of actual descent over 3 steps, so it may need roughly 12 steps in repeated short actions. I expect the left arm to move about 0.03 m per 3-step action and need about four rounds. I will keep this action to 3 steps.

The right link6 descended 0.042 m in 3 control steps, more than I expected, and is now at z = 0.898 m. It still needs to descend 0.032 m to reach the target height of z = 0.866 m; perhaps another 3 steps will be enough. The left link6 moved only 0.02 m along X and 0.023 m along Y, so it needs to continue toward its target. I will use another 3 control steps for both arms.

The right link6 is at the target height of z = 0.867 m. In the right wrist view, the bar center is around (285, 370) pixels, its width is approximately 80 pixels, and the fingers’ inner edges are at x = 125 and 520 pixels. The alignment looks good, so I will close the right gripper for 3 steps. Can I release the left watch now? It appears above the center-left of the blue basket, with the basket visible underneath in the wrist view. The current left link6 position is (−0.045, −0.122, 0.985) m, and I estimate the watch contact position at (−0.044, −0.015, 0.911) m. The blue basket center is at y = 0.055 m, so the watch is near the front half but inside. The front rim may be at y = −0.06 m, and the watch bottom may be at z = 0.85 m, above the rim. I judge the release safe. I will open the left gripper and close the right gripper together for 3 steps.

The right fingers may not yet be pinching the chocolate bar. In the wrist view, the left finger at x = 260 pixels appears to touch the bar’s left edge at x = 260 pixels, while the right finger is at x = 365 pixels and the bar’s right edge is around x = 320 pixels, leaving a 45-pixel gap. The opening command is 0.179, and closure is still in progress. The bar seems to have shifted left because of pressure from the left finger. Another reading puts its right edge at x = 315 pixels, still short of the right pad at x = 365 pixels. Would another 3 steps bring the opening command to 0 and establish contact? Perhaps another 2 steps would finish closure, though the bar might be pushed farther left. If the left pad is already touching and the right pad continues moving, I expect the bar to move left until the right pad contacts it. That seems acceptable provided it does not fall. I will hold the right pose and continue commanding closure for 3 steps. Meanwhile, I should move the left arm away from the released watches toward a high pregrasp pose for the left wooden toy, estimated at x = −0.15 m and y = −0.10 m. With the current left quaternion, a contact point 0.13 m forward of link6 has an estimated vertical offset of −0.074 m. Assuming the toy’s center is at z = 0.79 m gives a link6 grasp height of 0.864 m and an approximate grasp target of (−0.151, −0.207, 0.864) m. First, I will move from the current left link6 position of (−0.045, −0.122, 0.985) m to the higher pregrasp target of (−0.15, −0.22, 0.93) m, an estimated distance of 0.16 m. Moving leftward away should avoid the released watches. I considered 8 steps for the left motion and 3 for the right closure, then a shared action of 4 steps to finish seating the right fingers.

The right opening command has reached 0. Does that mean the fingers closed fully without holding the bar? The bar is visible below, and one closed finger appears to bisect the image, but the bar could still be between the fingers. I would expect a nonzero opening when grasping across the bar’s approximately 0.03 m width. However, this value is the native controller’s latest interpolated opening command, not the actual finger gap, so could it reach 0 even with contact? For the watches, the command stalled at 0.375; perhaps contact prevented further interpolation. Reaching 0 here therefore suggests little resistance and possibly a missed grasp, but it is not conclusive. The bar seems to lie under a finger and extend toward the bottom of the image. Perhaps the fingers are too far forward along the bar, or they closed just behind it. I should test the grasp with a small right-arm lift toward z = 0.89 m, perhaps keeping Y unchanged. If the bar is held, it should move with the gripper. I am considering 3 steps for the test while the left arm continues toward its wooden-toy pregrasp target.

The right chocolate bar now appears centered at approximately (335, 360) pixels in the wrist view. The right link6 height is z = 0.88 m, 13 mm higher than during the previous grasp attempt. Perhaps the fingers need to descend to z = 0.867 m or 0.86 m. Since I attribute the missed grasp to alignment, I will retry the approach to z = 0.867 m for 3 steps while positioning the left gripper for the toy. The left wooden toy is partially visible at the bottom of the wrist image, centered around (300, 480) pixels. Do I need to approach farther forward along +Y, or does its low image position mean the gripper is too close and should move backward? The current left link6 position is (−0.132, −0.204, 0.94) m with a pitched wrist. In the high-camera view, the toy is around (252, 243) pixels, with an estimated environment-frame X and Y position of (−0.15, −0.10) m. The estimated contact point currently has y = −0.097 m, close to the toy’s estimated y = −0.10 m, so the Y alignment seems reasonable. The successful watch grasp had its image center near y = 280 pixels, whereas the toy’s center is near y = 480 pixels. Perhaps the toy appears so low because of the height difference: link6 is at z = 0.94 m, the fingertips are around z = 0.85 m, and the toy is below them at about z = 0.78 m. Would lowering bring it upward in the image? When the right gripper descended from z = 0.94 m to 0.867 m, the bar’s top moved from image y = 345 to 255 pixels. Perhaps this relates to the camera angle or its lower position. Lowering the left link6 to z = 0.87 m should similarly bring the toy upward. Its current X position of −0.132 m is close to the toy’s estimated X position of −0.15 m; I will use a tentative left target of (−0.15, −0.21, 0.88) m. Could I pinch the wooden horse across X at the middle of its body? Its long axis appears diagonal in the high-camera view, its body width is approximately 0.05 m, and the current gripper orientation closes along X. Its center of mass seems near the body at x = −0.15 m, y = −0.10 m, so that grasp seems suitable. I will use 3 steps with both grippers open, targeting left link6 at (−0.15, −0.21, 0.88) m and right link6 at (0.11, −0.139, 0.867) m.

The right gripper is ready to close on the chocolate bar for 3 control steps. The left link6 still needs to descend another 0.034 m toward the wooden horse. I will use a 3-step action to close the right gripper while continuing the left gripper’s open-finger approach.

The right opening command is 0.306, and the pads appear to straddle the chocolate bar’s edges, which looks promising. Perhaps 2 more control steps will finish closure; I should then test the grasp with a small lift. The left wooden horse’s body is at the bottom center of the wrist view, with the fingers on either side. The left link6 is still at z = 0.891 m rather than its target of z = 0.88 m. I will use another 3 steps to continue the left gripper’s open-finger descent while continuing right-gripper closure for 3 steps. Then I will close the left gripper.

The right opening command has again reached 0 after further closure. Perhaps the bar slipped because the pad contact was too near an end, or perhaps the command can reach 0 even while an object is held. Could the watches have stayed at 0.375 because their loop shapes resisted closure? The bar’s thickness along the closing direction might be only 0.015 m, allowing it to remain held against the finger sides despite a zero command. I could test-lift again, but the high-camera view still shows the bar at its original position, partly under the right gripper, and it remains at the bottom of the wrist view. There is no evidence of a secure grasp. I would expect a bar width of about 0.02 m to leave a gap of about 0.02 m, perhaps corresponding to an opening command of 0.1. The change from 0.306 after 3 steps to 0 after another 3 suggests that contact occurred only during closure and the bar then slipped. I conclude that this attempt likely missed again. I should reconsider the grasp geometry. The bar lies flat, and the tilted fingers approach from the left along its long axis, closing along environment Y. At link6 z = 0.867 m, I estimate the fingertip height as 0.867 − 0.089 = 0.778 m. The table is estimated at z = 0.75 m and the bar’s top at about z = 0.77 m. The finger contact region spans from the tip at z = 0.778 m up to the base at about z = 0.96 m, so even the lowest part may be above the bar. Lowering link6 another 0.02–0.03 m would put the fingertip near z = 0.75 m and give the pads overlap with the bar. The watches were about 0.02 m tall, and their outer bands may have reached 0.03 m above the table. Their successful grasp at link6 z = 0.862 m had a finger height of about z = 0.805 m at a forward offset of 0.1 m, a tip height of z = 0.772 m, and an estimated band top at z = 0.79 m. That provided overlap, whereas the bar’s estimated top at z = 0.77 m is 8 mm below the current right fingertip. The right wrist’s local X axis has an environment Z component of −0.569. Lowering link6 to z = 0.845 m would put the tip at approximately z = 0.756 m. Excessive height now seems a more likely explanation for the first miss than alignment. I will reopen the right gripper and lower it about 0.02 m to z = 0.845 m over 3 steps. For the left wooden horse, the estimated fingertip height is 0.88 − 0.09 = 0.79 m, with the toy’s body top around z = 0.83 m and its base around z = 0.75 m. Gripping its body at z = 0.79 m seems reasonable. The body appears centered around (340, 450) pixels in the wrist view. The fingers are outside its approximately 0.1 m-wide base, while the body is about 0.06 m wide. I will close the left gripper at its current pose for 3 steps while reopening and lowering the right gripper.

Do the left fingers contact the wooden horse’s body? They appear at image x coordinates of about 190 and 450 pixels, while the horse’s body spans approximately x = 130–500 pixels, so I think they do. The left opening command is 0.49 after 3 control steps and likely needs 2 more steps to finish closure. The right opening command is 0.836, so reopening is still in progress. The bar’s center has shifted to about image x = 360 pixels, which looks good. I will use 3 steps to finish reopening the right gripper while continuing to close the left gripper. After that, I will close the right gripper on the bar.

The left gripper’s opening command is stable at 0.49, indicating contact with the wooden horse’s body. I will test the grasp with a 3-step lift toward a left link6 height of z = 0.905 m. At the same time, I will close the right gripper on the chocolate bar for 3 steps while holding its link6 height at z = 0.845 m.

The left wooden toy, originally at (251, 243) pixels in the high-camera view, may now be hidden by the gripper. It stays fixed in the wrist view, so it is likely held. The right pads appear to contact the bar at image x coordinates of 275 and 390 pixels, with the bar between them. The right opening command is 0.262 after 3 control steps. Should I test-lift the right bar before closure finishes? The opening command may reach 0 again, but the lower grasp height should help retain it. I will use 3 steps to lift the right link6 toward z = 0.87 m and lift the left link6 toward z = 0.93 m, perhaps retracting it as well. If the bar is held, it should stay fixed in the wrist view while the background moves. Another possible left target is z = 0.94 m and y = −0.24 m, also over 3 steps.

The right opening command has again reached 0, and the bar remains on the table after the lift, so this grasp missed. Could the bar be too narrow, or could it compress enough for the command to reach 0? In the high-camera view, it now appears around (430, 270) pixels, compared with its initial position at (432, 259) pixels. It seems to have shifted toward the robot, in negative environment Y, by about 0.02 m during the attempts. It is not held. I should try a different grasp strategy, perhaps a top-down grasp or using a thumb along the bar’s length near an end. Could I grasp its short end across its thickness? I need to ensure that the fingers actually intersect the bar. In the high-camera view, the gripper appears above and left of the bar: the fingers are around (418, 260) pixels and the bar around (430, 268) pixels. Perhaps the contact position is wrong along X, causing the fingers to close near the far end and push the bar away. Moving the gripper backward along negative environment X would put the bar deeper between the pads. I already changed link6 X from 0.125 m to 0.11 m, a backward adjustment of 0.015 m, but contact may still be too close to the end. Another possibility is to move backward by 0.04 m to x = 0.07 m. In the wrist view, the bar’s far end is near image y = 225 pixels, its near end extends below the image, and the fingertips are near y = 255 pixels. When closed, the fingertips are around (320, 255) pixels. The bar extends both above and below that point, placing the fingertips within its length near the far end. The pad contact area extends from image y = 255 pixels down toward the bottom, so it seems that there should be overlap along the bar’s length. The bar’s centerline and the meeting point of the closed fingers are both at image x = 320 pixels. Why does it still fail to hold? Perhaps the bar remains underneath the fingers because the grasp height is still too high. At link6 z = 0.845 m, I estimate the fingertip height at z = 0.755 m, the table at z = 0.75 m, and the bar’s top at z = 0.765 m. That should provide contact, but I am uncertain about the pad geometry. Could the pads lie in the local XY plane? The fingers extend along local X, close along local Y, and have thickness along local Z. I estimate the current local Z axis at approximately (0.569, 0, 0.823), which has a vertical component. The fingers’ vertical extent may be offset in either direction along local Z rather than centered on the link6 X axis. In the high-camera view, the black fingers appear to extend downward from the body. If they extend along +X at z = 0.78 m with perhaps 0.02 m of vertical thickness, I would expect contact. I could lower link6 another 0.02 m to z = 0.825 m, putting the tip around z = 0.735 m, below the table. That would risk table contact, although a flat-object grasp might require the fingers to contact the table lightly. During the earlier watch approach, link6 stalled around z = 0.821 m with a level target orientation and an estimated tip height of z = 0.772 m, which was consistent with a possible table height of z = 0.75 m. Here, lowering to z = 0.825 m would put the tip around z = 0.736 m and cause its lower edge to collide with the table. A smaller first adjustment to link6 z = 0.835 m, 10 mm lower, would put the tip around z = 0.746 m and might let the fingers straddle the bar. The lateral alignment also remains slightly uncertain: in the open-gripper view at obs_000322, the bar center was near image x = 355 pixels, right of center. Closure may have pushed it toward the center. A steeper downward orientation seems preferable because it could put the pads vertically around the flat bar while avoiding table contact. The current pitch is about 35°. Rotating farther downward would let the fingers approach the bar from above and then close. The earlier top-down quaternion [0.5, -0.5, 0.5, 0.5] in wxyz order maps local X to environment −Z, but it maps the closing axis, local Y, to environment −X. That is unsuitable for a bar whose length runs along environment X. I need local X along environment −Z and local Y along environment Y. The desired rotation has columns (0, 0, -1), (0, 1, 0), and (1, 0, 0), since (−Z) × Y = +X. Its matrix is [[0, 0, 1], [0, 1, 0], [-1, 0, 0]]. I initially wondered whether its quaternion was [0, 0.707, 0, 0.707]; I should compute it. This appears to be a +90° rotation about Y, mapping local X to (0, 0, -1), local Y to Y, and local Z to X, with wxyz quaternion [0.707, 0, 0.707, 0]. From the current quaternion [0.977, -0.025, 0.213, 0.002], the orientation change may be about 1.11 rad, so I may need an intermediate orientation. For a downward grasp, placing link6 about 0.13 m above the object would give a height near z = 0.91 m, with X and Y directly over the bar’s center. This seems better suited to the flat bar. I can lift the right link6 to z = 1.0 m while rotating and moving toward the estimated bar coordinates x = 0.23 m, y = -0.14 m. At the downward orientation, link6 at (bar X, bar Y, 0.92) m would put the fingertips near z = 0.76 m, allowing closure along environment Y across the bar’s width. The right-arm pose (0.23, -0.14, 0.92) m seems reachable. I will calculate the orientation distance from the current quaternion to the top-down Y-rotation quaternion [0.707, 0, 0.707, 0] and obtain an intermediate quaternion.

The calculated rotation to the right gripper’s vertical grasp orientation is 1.142 rad, exceeding the 1 rad limit, so I will use the midpoint orientation, about 0.57 rad away. I will open the right gripper and lift it from its current link6 position of (0.11, −0.139, 0.87) m to (0.17, −0.15, 0.99) m while rotating to that midpoint. The estimated position distance is 0.135 m and the orientation change is 0.57 rad. I will use 10 control steps. The left wooden toy is held, so I will transport it toward the white basket, whose estimated center is (−0.304, 0.05) m in X and Y. The toy’s contact offset may be about 0.11 m along the local X axis, whose environment-frame direction is approximately (0.006, 0.823, −0.569). Using an offset of 0.13 m instead, I estimate a link6 placement target of (−0.305, −0.04, 0.984) m to hold the object above the basket center at z = 0.91 m. From the current left link6 position of (−0.151, −0.227, 0.924) m, I considered an intermediate target of (−0.25, −0.17, 0.98) m, about 0.128 m away. I will now move the left arm to (−0.26, −0.15, 0.99) m for 10 steps, keeping the toy held, before making the final approach to the white basket. Both arms will move together during this action.

In the high-camera view, the left wooden toy is still held above the white basket near its left edge. The right wrist has mostly completed its rotation, and the bar appears vertical in the wrist view. The desired final top-down quaternion is [0.707, 0, 0.707, 0] in wxyz order; I estimate the remaining orientation distance at 0.49 rad. I will lift the right link6 from its current position of (0.153, −0.146, 0.962) m to (0.23, −0.14, 1.0) m, approximately 0.086 m away, while completing the rotation. With local X pointing along environment −Z in the final orientation, this should place link6 above the estimated bar center at x = 0.23 m and y = −0.14 m. I plan to use 12 control steps for the right motion. For the left arm, the final white-basket link6 target is (−0.304, −0.05, 0.99) m, approximately 0.128 m away. Assuming contact 0.13 m forward of link6 gives an environment-frame offset of (0.001, 0.107, −0.074) m, I estimate the toy center at that target as (−0.303, 0.057, 0.916) m, which looks suitable. I am considering 10 steps for the left motion and will release the toy later.

The triangulated bar center is at z = 0.748 m. The table top may be around z = 0.74 m, so my earlier assumption of z = 0.75 m seems close. With the top-down link6 at z = 1.0 m, I estimate the fingertip at z = 0.842 m, which is 0.094 m above the bar. Lowering link6 to z = 0.90 m would put the tip at z = 0.742 m, which seems appropriate. The estimated bar position is (0.232, −0.134, 0.748) m, and the measured right link6 position is (0.229, −0.14, 1.0) m, so X and Y already appear aligned. However, the bar is near image y = 150 pixels in the wrist view, while the fingertips appear near y = 255 pixels. The wrist camera’s optical axis is angled, so where should the vertical finger axis project? A point directly below link6 might be expected near y = 150 pixels, but could the fingertips be offset along local Z? The camera angle or its translation relative to link6 may explain the difference. I could calculate the bar’s projection with link6 at z = 1.0 m and z = 0.9 m as the camera moves with the end effector, accounting for the orientation-dependent extrinsics. With X and Y unchanged, would the bar remain near image y = 150 pixels, or move toward y = 120 pixels? As the camera descends, the vertical separation decreases and the angular offset may change. At link6 z = 0.9 m, the bar would be about 0.15 m below it rather than 0.25 m. If the optical forward axis has an environment-X component of 0.5, an X-aligned bar might project upward because the camera points toward +X, away from the bar. Would moving the gripper along negative environment X make the bar lie farther along relative +X and move it downward in the image, centering it at the pads? I need to derive this from the current extrinsics and measured link6 pose. The camera transform’s third rotation row may be approximately [0.5, 0, −0.866], meaning it looks downward and toward environment +X. A point directly below link6, at the same X coordinate, would lie behind the optical forward direction and appear high in the image, around v = 150 pixels. Local +X points downward, while the camera looks at an angle toward environment +X. The fingertips, about 0.157 m along local +X, should also be directly below link6, so why do they appear near y = 255 pixels rather than y = 150 pixels? There may be a camera translation offset along environment X or another direction. I will use the current right-wrist calibration to project points along the measured link6 local +X axis at offsets of 0, 0.05, 0.1, 0.13, and approximately 0.157 m. This will give the finger-axis center’s pixel position at each offset. I will also project the triangulated bar position for comparison.

The projected fingertip center at (320, 275) pixels matches what I see. The bar center at (306, 157) pixels lies farther along local +X than the fingertip because it is lower. With right link6 at z = 1.0 m, the bar is about 0.25 m below it, corresponding to a local +X offset of approximately 0.25 m and a projected image y coordinate of 156 pixels. To bring the bar into the pads at a local +X offset of about 0.12–0.14 m, I should lower link6 by 0.11 m to z = 0.89 m. The bar would then be at an offset of about 0.14 m and project near image y = 340 pixels, in the contact region. The X and Y alignment looks good. At this target height, I estimate the fingertips at z = 0.732 m, 0.016 m below the bar center at z = 0.748 m. The pads at a local +X offset of 0.12 m would be at z = 0.77 m and intersect the bar’s top, which seems suitable for grasping the flat bar. I will lower the right link6 from z = 1.0 m toward z = 0.89 m in 3-step actions, estimating about 0.03 m of descent per action. I can release the left horse simultaneously and then retract the left arm. I considered allowing 5 steps for release, or opening the left gripper and lowering the right for 4 steps. Could 4 steps produce about 0.07 m of actual descent? Another estimate is 0.04–0.06 m. I will use 3 steps for this action.

The released horse is inside the white basket. The bar is moving downward in the right wrist image, with its center near y = 170 pixels, after the right link6 descended 0.033 m. There is another 0.077 m to descend toward the target. I estimate that 3 more steps will bring link6 to z = 0.934 m and the bar to image y = 220 pixels; lowering to about z = 0.90 m afterward should bring it near image y = 330 pixels. Meanwhile, I will move the left arm away toward the second wooden toy, estimated at x = 0.03 m and y = −0.11 m. From the current left link6 pose of (−0.304, −0.05, 0.989) m to its proposed pregrasp pose of (0.03, −0.21, 0.93) m, I estimate a distance of 0.337 m, so I need an intermediate target. The pose (−0.15, −0.15, 0.98) m is approximately 0.182 m away and appears safely above the objects. I considered 5 steps for partial left-arm progress, or 8 steps for the left motion while allowing only 3 for the right descent. However, both arms share the action duration, and 8 steps could bring the right arm toward z = 0.89 m too quickly during the final approach. I will use 3 steps for both arms, keeping both grippers open, with the left target at (−0.15, −0.15, 0.98) m and the right height target at z = 0.89 m.

The bar’s center appears near image y = 220 pixels in the right wrist view, while the fingertips are near y = 255 pixels, so they are nearly in contact. Lowering the right link6 by 0.043 m to z = 0.89 m would bring the bar’s center near image y = 350 pixels. However, a target of z = 0.90 m may be better to avoid table contact. At the current link6 height of z = 0.933 m, I estimate the fingertip height at z = 0.775 m, which is 0.027 m above the bar at z = 0.748 m. At link6 z = 0.90 m, the tip would be at z = 0.742 m, which seems ideal. I will target the right link6 at z = 0.90 m and expect 3 control steps to reach that height. The left arm will continue toward (−0.15, −0.15, 0.98) m during the same 3-step action.

The right link6 descended only 0.009 m, with an orientation drift of about 0.034 rad. Could it be making contact? Its height is now z = 0.924 m, with the fingertip estimated at z = 0.766 m and the bar’s top at z = 0.758 m, so they are nearly touching. Why has the descent stalled at z = 0.924 m? A finger may be hitting the bar. The opening command is still 1, and the slight wrist roll could be caused by contact. I see no movement in the high-camera view. The bar appears large near image y = 220 pixels, between the fingers; perhaps a finger’s lower edge is contacting its top and resisting further descent. I will target right link6 z = 0.905 m rather than 0.90 m and restore the vertical quaternion over 2 control steps. The left target remains (−0.15, −0.15, 0.98) m. Is the left finger touching the horse in the white basket, as the wrist view might suggest? In the high-camera view, the finger appears above the white basket’s edge, so I judge it safe. I could move the left arm faster in a separate 8-step action, but the right arm is near contact, so I will use 2 steps for both now.

The right link6 has stalled at exactly z = 0.924 m, which I interpret as contact between the fingers and the table. The pads may already be low enough to grasp the bar. I estimate the vertical fingertips at z = 0.766 m, the bar’s center at z = 0.748 m, and its top at z = 0.756 m. The tip is still about 0.01 m above the center, but perhaps the fingers’ vertical thickness extends below it. If contact is causing the stall, that implies a table height of about z = 0.75 m, with some part of a finger touching it. Closing now should grasp the bar. I will close the right gripper while holding its current pose and continue moving the open left gripper toward the second wooden toy, using a target of (−0.05, −0.18, 0.96) m, approximately 0.16 m away. I will use 4 control steps for both arms.

The right pads visibly straddle the bar’s edges at image x coordinates of 260 and 390 pixels, and the opening command is 0.192, which looks promising. Perhaps further closure will bring the command to 0. I considered holding the pose and continuing closure for 2 more control steps before a test lift. I will use 3 steps to continue closing the right gripper while the left arm continues toward the remaining wooden horse.

The right gripper’s opening command is stable at 0.189, which indicates good contact with the bar. I will test the grasp with a 3-step lift toward a right link6 height of z = 0.95 m, a planned increase of 26 mm, while the open left gripper continues approaching the remaining wooden horse.

Does the right bar move with the gripper? It stays in the same position in the wrist view, although it still appears near (425, 256) pixels in the high-camera view after the gripper lifted 0.025 m. The bar may have lifted while retaining a similar projection in the high camera. I should confirm with a further lift of about 0.05 m toward z = 1.0 m and a retraction toward y = −0.18 m, then check whether the lift is visible in the high view. The right opening command is now 0.188, and I judge the grasp secure enough to proceed toward the red basket. The held-object offset may be about 0.18 m along local +X. Using an estimated downward offset of about 0.175 m from link6, the bar center would be at z = 0.774 m when link6 is at z = 0.949 m. For the red basket center at approximately (0.307, 0.05) m in X and Y, a link6 placement pose of (0.307, 0.05, 0.98) m would put the bar at z = 0.805 m, above the estimated basket bottom at z = 0.74 m. The rim may reach z = 0.80 m, and the bar bottom may be around z = 0.80 m, so release could be possible there. The fingertips would be at approximately z = 0.822 m, above the rim. This vertical placement seems easier. I considered a right link6 target of (0.307, 0.05, 0.99) m, approximately 0.205 m from its current pose of (0.231, −0.138, 0.949) m and within the 0.25 m command limit, using 12 steps. The path moves the object from y = −0.138 m to y = 0.05 m and by +0.076 m in X, with no other apparent obstacles. However, the Snickers bar is initially held around z = 0.77 m and could hit the red basket’s front rim unless lifted first. I will therefore first raise the right link6 to (0.25, −0.16, 1.02) m, an estimated distance of 0.075 m, over 8 steps, then move toward the basket. At the same time, I will move the open left gripper from (−0.058, −0.178, 0.961) m to the second toy’s pregrasp pose at (0.03, −0.21, 0.93) m, an estimated distance of 0.095 m. With the wrist pitched and the toy center estimated near (0.03, −0.11) m in X and Y, this pregrasp pose puts the estimated contact height at z = 0.856 m, above the toy at about z = 0.83 m. I will use 8 steps for both motions.

At first, I thought the right chocolate bar was still on the table at (445, 238) pixels in the high-camera view. The Snickers bar remains fixed in the wrist view, which could indicate that it is held. On reconsideration, its high-camera position has moved from approximately (432, 259) to (445, 238) pixels, upward and to the right near the gripper. That is consistent with the lift, so I conclude that it is held. The second wooden toy appears near the bottom of the left wrist view at approximately (250, 470) pixels, and the remaining white chocolate-bar package is near the bottom-left edge. The second toy is still around (330, 250) pixels in the high-camera view. The left link6 has reached its pregrasp position of (0.03, −0.21, 0.93) m exactly. I will lower it to z = 0.88 m, as for the first horse. I will move the right link6 over the red basket toward (0.307, 0.05, 1.02) m, an estimated distance of 0.216 m. I considered 12 navigation steps for the right arm and 3 steps for the left final descent, but both arms share the action duration. The open left fingers might contact or push the toy while continuing toward the target. I estimate that the left arm would reach z = 0.88 m in 6 steps and remain stable for the remaining 6 steps of a 12-step action. I will instead use 6 steps for both arms. The right arm may move only about 0.1 m toward its target and need another action afterward.

The right-arm target over the red basket at y = 0.05 m and z = 1.02 m may be unreachable with the vertical wrist orientation in the current arm configuration. I should first use an intermediate pose around y = −0.05 m and z = 1.0 m. I will target right link6 at (0.30, −0.04, 1.0) m, an estimated distance of 0.135 m, which will likely pass the precheck. After that, I could move to y = 0.05 m, perhaps lowering z to 0.96 m. The left-arm target remains valid. I will use 6 control steps for both arms.

Only a small part of the second wooden toy is visible at the bottom center of the left wrist view. At link6 height z = 0.88 m, perhaps its grasp point appears lower than the first toy’s because it has a different orientation. The left wrist orientation is unchanged, with link6 at x = 0.03 m and y = −0.21 m. The toy appears near (330, 248) pixels in the high view, with an estimated world position of (0.03, −0.113, 0.78) m. I estimate the fingertip at y = −0.08 m, z = 0.79 m, and the toy’s body center at z = 0.78 m. Only the top of its base is visible near image y = 450 pixels. The first toy’s body center also appeared near y = 450 pixels at link6 z = 0.88 m, although in obs_000316 its base spanned image y = 350–480 pixels and its body was around y = 400 pixels. Perhaps only a base corner is visible because the second toy is at world y = −0.09 m. Moving the gripper backward, toward more negative Y, might move the toy forward relative to the gripper and upward in the wrist image. The estimated contact point 0.13 m forward of link6 is currently at y = −0.103 m, which initially seemed suitable, but how does the camera’s viewing direction affect this interpretation? The second toy is rotated differently from the first: its head appears near (338, 241) pixels and its base center near (330, 252) pixels in the high view, whereas the first toy’s body grasp point was near (250, 245) pixels. Seeing the second toy’s base near the bottom with its body beyond the image suggests that link6 is too far forward along positive Y. I could retract by 0.03–0.04 m, toward y = −0.25 m, to bring its body into view. For the first toy, with link6 at y = −0.21 m, I initially wondered whether the toy was at world y = −0.15 m. However, projecting its high-camera position of (251, 243) pixels at z = 0.78 m gives y = −0.121 m rather than −0.10 m; the contact estimate of y = −0.103 m seemed reasonable. For the second toy, projecting (334, 248) pixels at z = 0.78 m gives y = −0.133 m, farther toward the front, in negative Y, than the first. The current contact point at y = −0.103 m is therefore about 3 cm beyond it. Setting left link6 y = −0.24 m would put the estimated contact point at y = −0.133 m. I will keep z = 0.88 m and tentatively retain x = 0.03 m, retracting the open gripper by 0.03 m in a short 3-step action. The right arm should continue toward the red basket’s front approach target of (0.30, −0.04, 1.0) m. I considered 6 steps for that continuation, but will use 3 steps for both arms.

The second horse is now large and visible in the left wrist view, with its body centered around (280, 380) pixels. If the gripper center is at image x = 320 pixels, the body is slightly left of center, so I could shift the gripper by −0.01 m along environment X. The current link6 X position is 0.03 m, and my estimated toy X position is also 0.03 m; perhaps the wrist orientation causes a camera offset. The first horse appeared at image x = 340 pixels with link6 at x = −0.15 m. Does the second horse appearing at x = 280 pixels imply an actual toy X position of 0.04 m? I am unsure. Image right corresponds to environment +X, so an object appearing left calls for moving the gripper toward negative X. In the high view, the left gripper appears near image x = 350 pixels, possibly over the toy’s head, while the toy center is near x = 330 pixels and the gripper body near x = 365 pixels. This also suggests that the gripper is too far right. I will shift the left link6 by −0.02 m to x = 0.01 m. The horse’s body is diagonal, and I want to pinch its middle across environment X near x = 0.02 m. I considered closing at the target pose of (0.01, −0.24, 0.88) m, but I should align first with the fingers open, perhaps over 2 control steps. The right bar is near the red basket’s front edge. With link6 at approximately (0.295, −0.055) m in X and Y and the held bar about 0.17 m below it, I estimate the bar center at (0.295, −0.055, 0.825) m. The front rim may be at y = −0.04 m, leaving the bar just outside the basket. The red basket appears to the left rather than at the bottom of the wrist view, perhaps because of the camera offset. I will move the right link6 to (0.307, 0.04, 1.0) m, an estimated distance of 0.096 m, to bring the bar inside. The earlier target at y = 0.05 m and z = 1.02 m failed the precheck from farther away, but this nearer target may pass. I considered 8 steps for the right motion and 2 for the left alignment. Since both arms share the action duration, the left could shift and then hold open without descending during an 8-step action. I will use 6 steps for both arms instead.

The right opening command dropped from 0.188 to 0.092, and the bar rotated in the wrist view, suggesting another contact with the rim. In the high-camera view, the bar appears across the red basket’s front rim near image y = 190 pixels, partly inside but still held. I initially considered lifting the right link6 to z = 1.04 m to clear the rim, then moving to y = 0.04 m. Its current height is z = 0.999 m. If the bar’s bottom is around z = 0.83 m and the rim is around z = 0.80 m, why is it contacting the rim? The bar is about 0.13 m long and may be oriented somewhat vertically. Perhaps it is held at an angle with its bottom touching the rim; the opening change supports the contact hypothesis. I should raise the right arm about 0.04 m and move the bar toward the basket center. I considered a right link6 target of (0.307, 0.04, 1.05) m, with an estimated distance of 0.068 m, but the precheck might fail at z = 1.05 m. I will instead try z = 1.03 m, an increase of 0.031 m, while targeting y = 0.04 m. At that height, I estimate the bar center at z = 0.855 m and its bottom perhaps at z = 0.82 m, which should provide clearance. The second horse’s body now appears centered near image x = 370 pixels, slightly right of center, but its outer body is between the left pads. I can close the left gripper now. I considered 3 steps for left closure and 6 for the right lift; I will use 5 steps for the combined action.

The right arm cannot reach the target at y = 0.04 m and z = 1.03 m with the current vertical wrist orientation. I should lower the target height or change the orientation. From its current position at y = −0.018 m and z = 0.999 m, its vertical-orientation reach seems to extend only to around y = 0 m at z = 1.0 m. Could lowering z to 0.96 m make y = 0.04 m reachable farther inside the basket? The earlier target at y = 0.05 m and z = 1.02 m also failed. Perhaps the arm’s maximum reach is about 0.4 m from its base, and perhaps the base is at y = −0.45 m; I am uncertain. The target at y = 0.04 m and z = 1.03 m may be too far away. Would lowering z reduce the reach requirement? The radial reach may remain similar, but the lower pose might work. I could use an intermediate right link6 target of (0.307, 0.015, 0.98) m, about 0.05 m away, then move to y = 0.04 m and z = 0.96 m. At that lower placement height, subtracting the estimated 0.17 m downward offset puts the bar’s bottom at z = 0.79 m, near the basket rim at z = 0.8 m. That might be acceptable once the bar is inside and ready for release. I should center it at y = 0.04 m. I will try the right link6 target (0.307, 0.04, 0.98) m, an estimated distance of 0.061 m, while closing the left gripper on the horse.

The right opening command is now 0. Is the chocolate bar standing on its edge inside the red basket? The wrist view shows the Snickers package’s vertical edge between the fingers, while it has disappeared from the high-camera view, perhaps because it is inside the basket. It may have slipped into the basket during the rim contact, leaving the closed gripper empty, which would be a good placement outcome. Alternatively, it may still be held on its side or lying on the rim. I should verify its position, perhaps with a crop of the red basket in the high-camera image, although the gripper may be occluding it. The left opening command is 0.22, and the horse has rotated vertically in the wrist view. Am I gripping its head or neck rather than its body? In the high-camera view, the second toy is still around (330, 245) pixels, partly beneath the gripper. The closure changed the toy’s orientation, and the grasp around its body or head is likely secure, but I should test it with a small lift. The right link6 is currently at (0.299, 0.006, 1.0) m, with the vertical fingers above the center or front of the red basket. I will hold that pose and open the right gripper for 5 control steps, then inspect whether the bar remains inside. For the left horse, I am planning a 3-step test lift toward a link6 height of z = 0.905 m.

The Snickers bar is inside the red basket. The left arm is holding the second horse by its head or neck, and the grasp appears stable. I will place it in the white basket while the right arm prepares to grasp the remaining chocolate bar, which is left of the horse at approximately environment-frame coordinates (−0.04, −0.14) m in X and Y. The right link6 is currently at (0.299, 0.006, 1.0) m with the gripper open and vertically oriented. Using the remaining bar’s high-camera position of (300, 260) pixels and an assumed height of z = 0.75 m gives an estimated position of x = −0.044 m and y = −0.142 m. In the initial crop, the package extended from approximately (289, 247) to (309, 277) pixels. It looks nearly vertical in the image, suggesting that its long axis runs mostly along environment Y with a small X component, though it may be diagonal. The current vertical orientation, approximately [0.707, 0, 0.707, 0] in wxyz order, puts local Y along environment Y, so the pads would close along the bar’s length. That seems unsuitable. I should yaw the vertical gripper by 90° so it closes approximately along environment X across the bar’s width. For this top-down grasp, I want local X along environment −Z and local Y along environment X. Since (−Z) × X = −Y, local Z should point along environment −Y. The rotation matrix would have columns (0, 0, −1), (1, 0, 0), and (0, −1, 0), giving [[0, 1, 0], [0, 0, −1], [−1, 0, 0]]. Could its wxyz quaternion be [0.5, 0.5, −0.5, 0.5]? I should calculate it. Applying a −90° environment-Z rotation to the current vertical orientation would map environment Y to X while leaving local X along −Z. Perhaps that instead gives [0.5, −0.5, 0.5, 0.5]; I will check with a script. The bar’s actual long-axis direction may be approximately (0.5, 0.866) in environment X and Y, but closing along X should still be roughly across its short dimension.

The desired right-wrist quaternion is [0.510, 0.514, 0.493, −0.482] in wxyz order, and the intermediate quaternion is [0.656, 0.286, 0.652, −0.250]. Moving the right link6 from the red basket to a high staging pose above the remaining bar at (−0.04, −0.14, 1.0) m would require about 0.38 m of travel, so I need an intermediate pose at (0.15, −0.10, 1.02) m while completing half the rotation. The left arm also needs an intermediate pose to carry the horse from its current link6 position of (0.01, −0.24, 0.905) m toward the white-basket target of (−0.304, −0.05, 0.99) m, an estimated distance of 0.38 m. I will use (−0.15, −0.17, 0.98) m. The paths could converge near the left staging position of (−0.15, −0.17) m and the right staging position of (0.15, −0.10) m in X and Y, but their approximately 0.3 m separation appears safe. I will move both arms for 12 control steps, keeping the left gripper closed on the horse and the right gripper open with the intermediate quaternion. Will the right gripper clear the blue basket and the second horse? It holds no bar, and at link6 height z = 1.02 m I estimate its vertical fingertips at z = 0.86 m, above the blue rim at z = 0.8 m, so I judge the path safe. The held horse’s bottom may currently be at z = 0.84 m. Its path leads from the toy area around y = −0.13 m toward the white rim; after lifting, I estimate the object height at about z = 0.9 m, using 0.98 − 0.074 = 0.906 m. That also appears to provide safe clearance.

The left arm has reached its intermediate target. The right wrist has only partly rotated: its quaternion’s x component is 0.15 versus the target value of 0.286, and its link6 X position is 0.241 m rather than 0.15 m. I attribute this partial progress to the simultaneous rotation and translation, so I will continue both motions. I will move the left arm toward the white basket at a link6 target of (−0.304, −0.05, 0.99) m, approximately 0.2 m away. For the right arm, I will use the next staging position of (0.08, −0.13, 1.02) m with the intermediate wxyz quaternion [0.656, 0.286, 0.652, −0.25]. I estimate the right arm’s remaining orientation change at 0.65 rad and its position distance at 0.187 m. The two paths remain separated, so I will move both arms for 12 control steps.

The left opening command dropped from 0.19 to 0.125, which I attribute to contact with the first horse or the basket rim, but the second horse remains held. It is now above the white basket near the existing horse. With left link6 at (−0.291, −0.063, 0.987) m, I estimate the held horse’s center at approximately (−0.29, 0.04, 0.913) m, high enough to release. It should fall a short distance and settle, perhaps atop the first horse; that is acceptable if it remains contained and stable. The right wrist is near its intermediate orientation, with link6 at x = 0.18 m and y = −0.067 m. I will complete the rotation and move above the remaining bar to (−0.04, −0.14, 1.0) m, using the wxyz quaternion [0.510, 0.514, 0.493, −0.482]. I estimate the position distance at 0.234 m, within the 0.25 m limit, and the orientation change at 0.785 rad. The precheck may pass. The path is high above the blue basket, with the vertical fingers rotating only in yaw and their tips around z = 0.86 m, so I judge it safe. I considered 12 control steps for the right motion and 5 for the left release. Holding the left gripper open for the rest of a shared 12-step action would be acceptable. I then considered using 10 steps for the combined action.

I should use a shorter right-arm intermediate target at (0.10, −0.12, 1.02) m. Its current wxyz quaternion, [0.661, 0.272, 0.658, −0.237], is already close to the intermediate orientation, with an estimated difference of 0.05 rad. I estimate the position distance to this target at 0.095 m. Afterward, I can target (0, −0.14, 1.0) m with the final quaternion. I wondered whether that rotation would be 1.57 rad, but the rotation from the current intermediate orientation to the final orientation is about 0.785 rad. I will allow 5 steps for releasing the horse with the left gripper and 8 steps for the right arm’s intermediate motion.

Both horses are stable inside the white basket. One is tipped onto its side, which is acceptable because the task specifies no orientation requirement for objects inside a container. The remaining bar appears at the far right edge of the right wrist view. The right link6 is currently at x = 0.1 m, y = −0.12 m, while the bar is estimated at x = −0.04 m, y = −0.14 m, directly to its left; the camera’s yaw makes it appear on the right. I will target right link6 at (−0.04, −0.14, 1.0) m with the final wxyz quaternion [0.510, 0.514, 0.493, −0.482]. I estimate the position distance at 0.14 m and the orientation change at 0.785 rad. The precheck may pass from this closer pose; the previous attempt failed from x = 0.18 m with an approximately 0.22 m X displacement. I will try 10 control steps. I also need to retract the empty left arm into clearance for the eventual reset. I considered a safe pose at (−0.3, −0.25, 0.98) m, or moving toward its initial pose at approximately (−0.3, −0.35, 0.92) m with a level wrist. Its current link6 pose is (−0.291, −0.063, 0.987) m above the white basket, with pitched, open fingers. I should call reset only after the remaining manipulation is complete. Another option is to retract left link6 to (−0.3, −0.30, 0.96) m with the initial wxyz quaternion [0.707, 0, 0, 0.707]. I estimate the orientation change at about 0.85 rad, within the limit, and the position distance at roughly 0.24 m, more specifically 0.237 m. The precheck might pass. I could also use an intermediate pose at (−0.3, −0.22, 0.98) m with the initial quaternion, about 0.16 m away, then reset later. Retraction should avoid collision with the white basket. For this action, I will target left link6 at (−0.3, −0.25, 0.96) m with the initial quaternion and open fingers, while moving the right arm to its final alignment target, using 10 steps for both arms.

The right arm’s local IK keeps failing when I try to move it left to x = −0.04 m with the rotated vertical wrist. Could reaching across its body be the problem? I could try a smaller intermediate X target of 0.05 m and complete the rotation first, but using the now-free left arm for the remaining bar may be much easier. The bar is near the center at x = −0.04 m, while the left link6 is above the white basket at x = −0.291 m, y = −0.063 m. With the left arm’s base at x = −0.3 m, the target requires about 0.26 m of reach along X, compared with 0.34 m from the right base at x = 0.3 m. I suspect reach is causing the right-arm failure, and I think the left arm can handle it. I will switch the remaining bar grasp to the left arm and retract the right arm into clear space for a later reset. The left wrist is currently pitched. The vertical wxyz quaternion [0.707, 0, 0.707, 0] would close along environment Y, but the bar’s long axis runs along Y, so I need closure along X. I tentatively identify the desired orientation as Rz(−90°) applied to that vertical orientation, giving [0.5, −0.5, 0.5, 0.5], similar to the right arm’s final target. A horizontal approach from the front is another possibility, but the vertical grasp has already worked, so I prefer to rotate the left gripper downward and move it above the bar. The right link6 is at (0.1, −0.12, 1.02) m. Moving directly toward (0.3, −0.35, 0.92) m with the initial wxyz quaternion [0.707, 0, 0, 0.707] would require an estimated position change of 0.32 m and perhaps an orientation change of 1.5 rad, so I need an intermediate pose. I plan to move it first to (0.25, −0.25, 1.0) m while holding its current intermediate orientation; that seems safe. The left link6 remains at (−0.291, −0.063, 0.987) m with wxyz quaternion [0.679, −0.205, 0.216, 0.671]. I am unsure of the rotation distance to the proposed top-down quaternion [0.5, −0.5, 0.5, 0.5]; perhaps it is 1.7 rad. I will calculate that distance and interpolated orientations before choosing the next motion.

The calculated left-wrist rotation is 0.966 rad, just below the 1.0 rad limit, so I can command the desired top-down orientation directly. I will raise left link6 to z = 1.04 m while keeping it above the white basket at x = −0.291 m and y = −0.063 m. With the fingers fully downward, I estimate their tips at z = 0.882 m, above the white rim at approximately z = 0.8 m, so this appears safe. After rotating, moving directly above the bar to (−0.04, −0.14, 1.0) m would require about 0.263 m of travel, exceeding the 0.25 m limit. I can first use the intermediate pose (−0.15, −0.1, 1.02) m, then move to the final pose. I initially considered rotating and lifting the left arm toward (−0.29, −0.063, 1.04) m over 10 control steps while retracting the right arm to (0.25, −0.25, 1.0) m over the same 10 steps. The right retraction is about 0.2 m and appears safe with its current wxyz quaternion [0.656, 0.286, 0.652, −0.25]. Both prechecks might pass, but a right-arm failure would prevent either arm from moving. I will instead rotate only the left arm now and hold the right arm at its measured pose, then retract the right separately. The left orientation change is near the bound but valid. I will use 12 control steps, targeting left link6 at (−0.291, −0.063, 1.04) m with wxyz quaternion [0.5, −0.5, 0.5, 0.5] and keeping both grippers open.

The left wrist has only partly rotated, with measured wxyz quaternion [0.644, −0.295, 0.303, 0.638] rather than the target [0.5, −0.5, 0.5, 0.5]. I will continue rotating it while moving to the intermediate link6 position (−0.15, −0.10, 1.03) m toward the remaining bar, an estimated distance of 0.146 m. The path above the blue and white baskets appears clear at z = 1.03 m, with the fingers partly pointing downward. At the same time, I will retract the right link6 to (0.25, −0.25, 1.0) m, about 0.2 m away, while holding its current orientation. It needs no further rotation for this motion, and the retraction appears safe. The targets may pass the precheck. I will use 12 control steps for both arms.

The left arm has not yet reached its target, but its wrist is about 0.27 rad from the final orientation. The right arm is continuing to retract. I will move the left link6 to (−0.04, −0.14, 1.0) m, an estimated distance of 0.18 m, with the final wxyz quaternion [0.5, −0.5, 0.5, 0.5]. I will continue retracting the right link6 toward (0.3, −0.35, 0.95) m while holding its current quaternion. I estimate that target is about 0.22 m away and requires a Z change of −0.06 m. Will it pass the precheck? The right wrist has an unusual vertical yaw orientation, but moving toward its base should help it pass. I will use 12 control steps.

The left gripper is above the remaining bar, whose center appears around (350, 175) pixels in the wrist view. Its long axis looks mostly vertical in the image, with a diagonal tilt. I want to check the closing direction for the vertical wxyz quaternion [0.5, −0.5, 0.5, 0.5]. I understand this target as Rz(−90°) applied to Ry(90°), placing local Y along environment X, so the fingers close along X. The bar’s length runs mostly along environment Y, making that closing direction suitable. I estimate the bar center at (−0.04, −0.14, 0.75) m. The current left link6 position, (−0.057, −0.137, 1.001) m, is close horizontally. I will lower its target height to z = 0.925 m, using the Snickers grasp’s contact-limited link6 height of z = 0.924 m as a reference. Although this is the other arm, the table is the same. I estimate the current vertical fingertip height at z = 0.843 m; the planned 0.076 m descent would put it at z = 0.767 m, which seems appropriate. The bar is currently at image y = 175 pixels, and I expect it to move downward toward y = 220 pixels as the gripper descends. I will use 3 control steps for the descent while continuing the right arm’s retraction toward (0.3, −0.35, 0.95) m without changing its orientation. I could also begin rotating the right wrist back to its initial orientation in clear space, but that is not necessary until the reset.

The remaining bar looks well centered at approximately (330, 210) pixels in the left wrist view. I will lower the left link6 by 0.039 m toward z = 0.925 m over 3 control steps. The right arm is nearly in clear space, so I will hold it at its current pose.

At the left link6 height of z = 0.927 m, the bar appears large in the wrist view, with its center around (290, 270) pixels and a width of approximately 100 pixels. The fingers’ inner edges are at x = 125 and 520 pixels. The alignment looks ready, so I will close the left gripper for 4 control steps.

The left gripper’s opening command is 0.205, which looks like good contact with the bar. I considered finishing closure for 2 steps and then test-lifting for 3 steps. Instead, I can lift directly toward a link6 height of z = 0.95 m for 3 steps while keeping the gripper commanded closed, as in the earlier successful grasp. I will use that 3-step test lift.

The bar lifted and rotated slightly, and I judge it to be held. Transporting it directly to the red basket would move the left arm from x = −0.04 m to x = 0.307 m and from y = −0.14 m to y = 0.05 m. With the left wrist vertical, this may be an unreachable cross-body motion. The left base is at x = −0.3 m, so the red basket is 0.607 m away along X, roughly 0.6 m. Could the arm’s maximum reach be about 0.65 m, or its reachable end-effector X position only about 0.2 m? I need to assess that. The right arm already struggled to reach x = −0.04 m from its base at x = 0.3 m, a 0.34 m X offset, perhaps because of the orientation or Y position. The left arm’s 0.607 m offset would be much worse. Perhaps I should have kept using the right arm for this bar and tried intermediate orientations. Now that the left arm holds it, I can either transfer it directly to the right arm at a central location or set it on a clear part of the right side of the table for a new grasp. A two-arm handoff is possible but complex. Placing it within the left arm’s reach, for example at x = 0.15 m, y = −0.20 m, would let the right arm grasp it vertically at x = 0.15 m and finish the placement. The right gripper is open with the intermediate wxyz quaternion [0.656, 0.286, 0.652, −0.25], whose closing direction is rotated by about 45°. Should I use the Snickers-style vertical quaternion [0.707, 0, 0.707, 0]? This bar’s long axis runs along environment Y, so the right fingers need to close along X instead, using [0.5, −0.5, 0.5, 0.5], the same orientation as the left gripper. At x = 0.15 m, the right arm would have only a 0.15 m X offset from its base, which seems feasible. One option is to move the bar to a staging pose at (0.12, −0.20, 0.95) m, release it on the table, retract the left arm, and then rotate and align the right gripper for another grasp. A direct handoff at that same pose would let the right fingers surround the bar while the left still holds it, but it adds collision risk. Table staging is simpler and safer, even though it requires two grasps. There are 614 control steps remaining, so I have enough budget and should avoid losing progress. I could test a left-arm intermediate pose toward red at (0.15, −0.05, 1.02) m and then try x = 0.307 m, but perhaps the left arm’s maximum reach is only 0.5 m. The bases are at x = ±0.3 m, and the table is about 0.8 m wide. I estimate the ARX reach at roughly 0.55 m; the 0.607 m X offset combined with about 0.4 m along Y would require more than 0.7 m of reach. I conclude that the left arm cannot reach red and will use staging. The right arm may be able to take over at x = 0.15 m, y = −0.14 m with the final quaternion [0.5, −0.5, 0.5, 0.5], closing along X. Its previous failure was at x = −0.04 m, while x = 0.1 m worked with the intermediate orientation. I could stage the bar at x = 0.12 m, y = −0.18 m. From the right arm’s current pose of (0.273, −0.318, 0.962) m, moving to (0.15, −0.18, 1.0) m while completing the rotation would likely be within the command bounds. For that alternative, the left link6 would move from (−0.04, −0.14, 0.952) m to (0.12, −0.18, 1.0) m, an estimated distance of 0.167 m. With the wrist vertical, I estimate the held object at z ≈ 0.83 m, above the table. I could then lower link6 to z = 0.925 m and release. The arms would be close at that staging point, so the left must retract before the right descends. Moving both arms simultaneously to the same X and Y coordinates, with the right pregrasp at (0.12, −0.18, 1.05) m, would risk a collision. I will keep the right arm stationary or retracted until the left releases and moves away. Another possible staging location is x = 0.12 m, y = −0.22 m, followed by a leftward and upward withdrawal. The area near the right bar’s original location is now empty and appears clear of object obstacles. For the immediate action, I will lift the left-held bar while moving link6 to (0.12, −0.20, 1.02) m, an estimated distance of 0.174 m. I will retain its vertical orientation and closed-gripper command, hold the right arm at its current pose, and use 12 control steps.

Even the staging target at x = 0.12 m and z = 1.02 m failed the precheck. I should use a smaller intermediate pose, perhaps (0.05, −0.17, 0.98) m. The left arm’s cross-body reach may be limited to around x = 0.08 m. I will try the link6 target (0.05, −0.18, 0.99) m, an estimated distance of 0.105 m from its current pose, for 10 control steps. After that, I may try (0.12, 0.2, 0.98) m.

The left link6 is approximately at (0.05, −0.18, 0.989) m, with the bar held below its center. I will move it to the staging pose at (0.12, −0.20, 0.99) m, an estimated distance of 0.073 m. The precheck is likely to pass now that the intermediate move has succeeded. I could begin moving the right arm to a high pose at (0.16, −0.18, 1.0) m while rotating to its final grasp quaternion. However, with the left arm staging near x = 0.12 m, y = −0.20 m, the grippers would be only about 0.04 m apart in the same high area, creating a collision risk. I will keep the right arm at its current pose until the left arm releases the bar and retracts. I am planning 10 control steps for the left move to (0.12, −0.20, 0.99) m.

The left link6 is at x = 0.103 m rather than the staging target of x = 0.12 m, but that is close enough. I will keep its current X and Y positions and lower it from z = 0.986 m to z = 0.927 m. I estimate the bar’s center is currently at z = 0.82 m; lowering link6 by 0.059 m should bring the bar’s center to about z = 0.76 m on the table. I could open the gripper at z = 0.986 m, but I estimate that would produce a 0.23 m drop, which could leave the bar unstable. Instead, I will lower it in 3-step increments, repeating as needed before releasing it. The right arm will hold its current pose.

The left link6 is now at z = 0.955 m, and the bar remains in the same position in the wrist view. I will lower the left gripper another 0.028 m over 3 control steps.

The bar is now at the table surface. I will open the left gripper for 5 control steps, then retract the arm. Could I combine opening with an upward motion? Opening while lifting risks dropping the bar, though it might be acceptable over only 5 steps. It is better to open the gripper while holding both arms stationary, then inspect before retracting.

The staged bar is lying flat, with its long axis vertical in the left wrist image. I am unsure how that maps to the world frame; with the left camera yawed by −90°, image vertical likely corresponds to environment Y. I will retract the left arm upward, backward, and leftward to clear space for the right gripper. I am considering a left link6 target of (0, −0.25, 1.03) m, holding the vertical orientation, with an estimated travel distance of 0.134 m over 8 control steps. One option is to move the right gripper directly above the bar at (0.108, −0.198, 1.0) m with the same wxyz quaternion [0.5, −0.5, 0.5, 0.5]. Moving it from its current X and Y coordinates of (0.273, −0.318) m toward (0.108, −0.198) m would require an estimated distance of 0.204 m. Meanwhile, the left arm would move away from (0.108, −0.198) m toward (0, −0.25) m. Their paths could converge near the bar as the left arm leaves. I estimate their initial separation at 0.202 m and their final separation at about 0.13 m, which seems safe, but their separation during motion might fall to about 0.08 m and allow the fingers to collide. I will stage the approach instead: retract the left arm while moving the right arm only to the nearby high pose (0.23, −0.23, 1.02) m with the final quaternion. I estimate that right-arm motion at 0.11 m with an orientation change of 0.785 rad, and it keeps the right gripper to the right of the bar. Once the left arm is clear, I can move the right gripper directly above the bar. I will use 10 control steps for both arms now, with both grippers open.

The orientation distance from the right wrist’s current quaternion [0.656, 0.286, 0.652, −0.25] to the target [0.5, −0.5, 0.5, 0.5] may be about 1.11 rad. Could sign differences explain this? All of these quaternions are in wxyz order. The earlier right-wrist target was [0.510, 0.514, 0.493, −0.482], which is equivalent under an overall sign flip to [−0.510, −0.514, −0.493, 0.482]. That is not the same as the left-wrist target [0.5, −0.5, 0.5, 0.5]. The right wrist’s current intermediate quaternion came from rotating its original orientation toward Rz(−90°). Could the left-wrist target instead represent a different yaw, perhaps +90°? I may have confused the two orientations. The appropriate right-wrist target for closing along environment X could be [0.510, 0.514, 0.493, −0.482], rather than the left-wrist quaternion. Are they equivalent through a sign flip? Comparing the sign-flipped right target with the left target, the X and Z quaternion components appear to have different signs. Their rotation difference might be about 90°, with a different local Z direction. I will compute the local Y directions for both orientations to check.

Both orientations close along environment X, but in opposite directions, so either is suitable for this grasp. The rotation from the current right-wrist orientation to the left-wrist quaternion may be about 1.55 rad, consistent with the validation rejection. The right arm’s original target quaternion, [0.510, 0.514, 0.493, −0.482] in wxyz order, is only about 0.786 rad away, so I will use it. The left orientation closes along −X and the right along +X; that difference does not matter here. I will move the right link6 to (0.23, −0.23, 1.02) m with its original final quaternion while retracting the left arm. I will use 10 control steps.

The right arm’s precheck is still failing for simultaneous translation and rotation, so I should separate them and rotate in place first. The left arm can retract while the right arm holds its position. I will use an intermediate right-wrist orientation 0.6 of the way from its current orientation to the target, with wxyz quaternion [0.5796, 0.4305, 0.5672, −0.3963]. This requests about 0.47 rad of rotation with no translation, so I expect it to pass the precheck. I initially considered 10 control steps for the left retraction and partial right rotation, then considered using 12 steps.

The left arm is nearly clear, but its link6 is still above and near the staged bar at (0.028, −0.236, 1.008) m; the bar is at approximately x = 0.108 m, y = −0.198 m. The right link6 is currently at x = 0.275 m, y = −0.318 m. I will finish rotating the right wrist in place while moving the left arm farther away to (−0.1, −0.30, 1.0) m. The right target quaternion is [0.510, 0.514, 0.493, −0.482] in wxyz order. I estimate the remaining orientation distance at 0.315 rad, which is within the command limit. I will use 8 control steps.

Even the roughly 18° rotation failed the local precheck. Could the wrist be near a joint limit at its current position? The precheck’s remaining rotation error was about 0.185 rad. Joint 6 might be near ±π, so a slight position change could allow the rotation. The current right-wrist quaternion is [0.585, 0.423, 0.573, −0.389], and the original final target is [0.510, 0.514, 0.493, −0.482], both in wxyz order. I could instead try the left wrist’s orientation, [0.5, −0.5, 0.5, 0.5], which also closes along environment X and might admit a different wrist joint configuration. That target previously exceeded the 1 rad command limit. From the current orientation, I estimate the change might be about 1.2 rad, so I could use a halfway intermediate orientation. I should calculate the angular distance and intermediate quaternion before choosing a potentially reachable target. Another possibility is to rotate the right wrist back toward its initial orientation, reset, and then use a horizontal approach. The right arm’s vertical Snickers grasp with quaternion [0.707, 0, 0.707, 0] was successful and reachable, so I could also use that orientation again. It closes along environment Y. I could rotate the staged bar by 90° with a push, or perhaps grasp along its length near one end. I previously assumed the bar was too long, but it might fit: I considered a bar length of 0.10 m and a maximum gap of 0.12 m, or an open inner gap of about 0.11 m. The Snickers bar was about 0.12 m long. The remaining bar may span about 35 pixels in the high-camera image, suggesting a world length of about 0.09 m; another estimate puts its length along environment Y at about 0.11 m. With a maximum opening perhaps around 0.12 m, a centered lengthwise grasp might just fit, though it would be risky. I prefer first to explore the alternative orientation [0.5, −0.5, 0.5, 0.5], which may be reachable with a different wrist configuration. After the left arm retracts, I could hold the right arm’s position and rotate toward an intermediate orientation between its current quaternion and that target. I will calculate the angular distance and interpolated orientations now.

The calculated orientation distance from the current right wrist to the left wrist’s quaternion is 2.79 rad, or about 160°. I interpret this as the right wrist having taken the long rotational path. The interpolated quaternion approximately [0.711, 0, 0.703, 0.024] is close to the vertical orientation [0.707, 0, 0.707, 0] that worked for the first bar. All these quaternions are in wxyz order. Returning directly to that vertical orientation would require about 1.397 rad, exceeding the 1 rad command limit, so I need an intermediate orientation. I initially considered an approximate quaternion [0.662, 0.22, 0.68, −0.19] and a Slerp fraction of 0.35. The earlier interpolation at fraction 0.45 gives a nearly vertical orientation, but its distance from the current wrist is about 1.257 rad, still too large. A fraction of 0.3 would request about 0.838 rad; I could calculate that quaternion. The original right-wrist target was a −90° yaw from vertical, and the current orientation lies between them. I am still unsure of the direction of the return rotation, but its angle is about 1.4 rad. I can return to vertical in two stages, then either grasp the bar along its length or continue rotating toward the left-wrist orientation by the longer route. Another option is a handoff to the right gripper while it closes along environment Y. I could also reorient the bar so its long axis runs along environment X, letting the right vertical gripper close across its width along Y. The left arm could have rotated the bar by 90° before staging it, but it has already released it. Regrasping with the left arm, rotating its yaw by 90°, and placing it again remains possible, though it requires more work. A lengthwise grasp with the right vertical gripper may be simpler if the opening is sufficient. I tentatively see the staged bar near high-camera coordinates (377, 290) pixels, with a length of perhaps 30 pixels. Assuming z = 0.75 m and a scale of about 450 pixels/m, another length estimate of 38 pixels gives 0.084 m. The maximum open inner gap may be about 0.105 m, so the bar could fit end-to-end. The left wrist view suggests a length of about 330 pixels at an estimated depth of 0.18 m; with focal length 397 pixels, that suggests about 0.15 m, although the angled perspective could put its length nearer 0.11 m. The initial Snickers bar spanned about 60 pixels in the high view, corresponding to 0.127 m, whereas the remaining bar spans about 40 pixels, suggesting 0.09 m. I judge the remaining bar to be shorter, around 0.09 m, and likely to fit within an approximately 0.10 m gap. I will return the right wrist to the proven vertical orientation, align it above the staged bar’s estimated environment-frame center at x = 0.108 m, y = −0.198 m, lower link6 to z = 0.924 m, and close along environment Y across the bar’s length. First, I need to calculate a bounded intermediate rotation. The current right-wrist quaternion is [0.585, 0.423, 0.573, −0.389], and the vertical target is [0.707, 0, 0.707, 0]. Their estimated distance is 1.397 rad. A halfway Slerp orientation may be approximately [0.661, 0.220, 0.679, −0.202], about 0.699 rad away. I will calculate the distance and that halfway quaternion now.

The calculated rotation from the right wrist’s current orientation to the proven vertical orientation is 1.224 rad. The halfway orientation requires a 0.612 rad rotation, so I will use that intermediate quaternion while holding the right gripper’s position fixed. At the same time, I will retract the left arm to clear the staging area.

The right wrist has rotated back near its earlier intermediate orientation. The left arm is clear at x = −0.047 m, y = −0.273 m, and the staged bar is visible around (375, 290) pixels. I will continue rotating the right wrist toward the vertical wxyz quaternion [0.707, 0, 0.707, 0]. I estimate the remaining orientation change at about 1.22 rad again, so I should use an intermediate orientation. A halfway quaternion might be approximately [0.68, 0.146, 0.69, −0.136]. I will calculate the angular distance and use Slerp to obtain an intermediate quaternion.

The right wrist is now about 0.78 rad from the vertical target, within the 1.0 rad command limit, so I can request that orientation directly. From the earlier quaternion with w = 0.585, the distance was about 1.22 rad; after the last action, the measured quaternion has w = 0.658 and the remaining distance is about 0.78 rad. I considered combining the rotation with a move to (0.20, −0.22, 1.0) m, but simultaneous translation and rotation may have caused the earlier precheck failure. I will instead rotate the right wrist in place toward the vertical wxyz quaternion [0.707, 0, 0.707, 0] for 10 control steps. I also considered moving the left arm farther away to (−0.15, −0.32, 0.98) m, but it is already clear, so I will hold its current pose.

The right wrist still has a quaternion x component of 0.122, which I am treating as remaining roll. I estimate it is about 0.245 rad from the vertical target. I will continue toward that orientation while moving the right link6 above the staged bar to (0.108, −0.198, 1.0) m, an estimated distance of 0.204 m. The precheck might pass now that the wrist is nearly vertical and the left arm is clear. I will try 12 control steps while holding the left arm stationary.

With the right wrist vertical, the bar’s long axis appears horizontal in the wrist image, whereas it appeared vertical with the left wrist’s camera yaw. Does that mean its long axis runs along environment X, or is this a consequence of the different camera orientations? The right fingers sit on the left and right of the image and close horizontally, so this would indeed be a grasp along the bar’s length. The bar spans image x coordinates of approximately 135–365 pixels, a width of 230 pixels, within the estimated open inner gap of about 400 pixels. It appears to fit. The bar’s center is around image x = 250 pixels, left of the image center at x = 320 pixels. The right link6 is currently at environment x = 0.158 m, y = −0.236 m, while the planned target is x = 0.108 m, y = −0.198 m. The leftward image offset suggests that the gripper is too far along the camera’s right direction. I expect moving to the planned target to shift the bar right in the image and center it. I will move the right link6 to (0.108, −0.198, 1.0) m with its vertical orientation for 8 control steps, while holding the left arm stationary.

The bar appears centered at approximately (350, 160) pixels in the right wrist view. Its length is about 250 pixels, compared with an inner finger gap of about 400 pixels, so it fits with about 75 pixels of clearance at each end. I will lower the right link6 toward z = 0.924 m in repeated 3-step increments while holding the left arm stationary.

The bar now appears 315 pixels long in the right wrist view, compared with a finger gap of 400 pixels. That leaves only about 42 pixels of clearance at each end, but it still fits. I will lower the right link6 another 0.042 m over 3 control steps.

The bar now appears about 420 pixels long, slightly wider than the estimated 400-pixel inner finger gap. Its left end is at image x = 156 pixels and its right end at x = 580 pixels. The inner pad edges are around x = 125 and 520 pixels at y = 260 pixels. The bar spans approximately y = 230–295 pixels, with its right end extending beyond the right pad. At the measured right link6 height of z = 0.933 m, another estimate gives a bar length of 424 pixels. The gap near image y = 250 pixels still appears to be about 400 pixels, making the bar roughly 5% too long for an end-to-end grasp. Closing might push or rotate the bar; could it still catch an end from outside? I also considered a diagonal grasp with one pad beyond each end, but the maximum physical gap may be only about 0.08 m. I cannot open farther because the opening command is already at its maximum of 1. Rotating the bar slightly might shorten its image projection, but I do not think that would solve the length along the closing direction. A grasp across its width is not possible with the current wrist orientation. Pinching the short width near one end would require about a 90° wrist rotation. Could an oblique approach instead let me grasp an end across its thickness or width without changing the wrist orientation? The better option may be to retry the widthwise wrist orientation at this more central position. It was joint-limited earlier near right link6 x = 0.275 m, y = −0.318 m, but it may be reachable now at x = 0.108 m, y = −0.198 m. From the current vertical orientation, the original widthwise target quaternion [0.51, 0.514, 0.493, −0.482] in wxyz order requires about 1.57 rad of rotation, so I need an intermediate orientation. I considered lifting link6 to z = 0.98 m and rotating in place above the bar. A −45° rotation about environment Z applied to the vertical Ry(90°) orientation gives an approximate intermediate wxyz quaternion of [0.653, 0.281, 0.653, −0.280], or more precisely in my estimate [0.653, 0.281, 0.653, −0.281]. This resembles the earlier intermediate orientation. The right arm previously reached (0.1, −0.12, 1.02) m with that intermediate orientation, although the subsequent move to x = −0.04 m failed. That suggests the intermediate rotation may succeed at the current x = 0.108 m, y = −0.198 m. The final widthwise orientation could still encounter a joint limit, but it may work here even though it failed at x = 0.275 m. I will lift right link6 to z = 1.0 m at its current X and Y coordinates and command the earlier intermediate wxyz quaternion [0.656, 0.286, 0.652, −0.25], an estimated orientation change of 0.785 rad. I will use 10 control steps with the right gripper open and hold the left arm stationary. Then I can attempt the final widthwise orientation. There are 529 control steps remaining, which should be enough for this approach.

The right wrist has only partly rotated, with a measured wxyz quaternion of [0.691, 0.164, 0.69, −0.143]. I will continue toward the intermediate quaternion [0.656, 0.286, 0.652, −0.25], estimating about 0.4 rad of remaining rotation, while keeping it at the same position above the bar. I will use 10 control steps.

The bar now appears diagonal from bottom-left to top-right in the right wrist view. Will completing the full 90° yaw make it appear vertical? At the intermediate 45° orientation, its initially horizontal appearance has become diagonal, so I expect the final 90° orientation to make it vertical, as desired for a grasp across its width. I will target the final right-wrist quaternion [0.510, 0.514, 0.493, −0.482] in wxyz order, with a remaining orientation change of about 0.786 rad. The local IK precheck may pass at this same position. I will try 10 control steps without changing the gripper’s position.

The final negative-yaw pose still appears to hit a wrist joint limit. I will try the alternative widthwise orientation used by the left arm, with wxyz quaternion [0.5, -0.5, 0.5, 0.5]. This uses +90° yaw instead of −90°, so I can rotate back through vertical and then toward +90°. The longer route should avoid the negative wrist limit. The left arm successfully used this orientation at the same bar position; the right arm may also reach it at the central X position of 0.108 m. The arms’ joint limits may be mirrored rather than identical, but the opposite wrist roll seems more likely to be reachable. The current intermediate yaw is −45°, and I estimate the rotation to the left arm’s orientation at 2.79 rad. I can divide it into three or four rotations taking roughly 40 control steps. There are 509 steps remaining, so that is affordable. At the final orientation, the right gripper’s local Y axis will point along environment −X, giving closure along X. I expect the bar to appear vertical in the wrist camera, though that still needs checking. My planned sequence is to return to the vertical wxyz quaternion [0.707, 0, 0.707, 0], about 0.786 rad from the current orientation, then move through the +45° intermediate quaternion [0.653, -0.281, 0.653, 0.281], and finally reach [0.5, -0.5, 0.5, 0.5] at +90°. I will allow 10 steps for each stage. Joint 6 could encounter the opposite limit at the final pose, but I think this route is more likely to work. The earlier direct request for the left arm’s quaternion exceeded 1 rad because of the sign difference; staged rotations should avoid that command-limit rejection. For the immediate action, I will rotate the right wrist back to vertical at its current position and hold the left arm stationary.

The right wrist is not fully vertical yet; its measured quaternion x component is still 0.128. I considered commanding the vertical orientation for another 6 control steps before rotating toward the +45° intermediate orientation. Could I go directly to that opposite intermediate orientation? I estimate the current yaw at −20° and the rotation to the +45° target at about 1.14 rad, which may exceed the 1.0 rad command limit. I should return to vertical first. I will use 8 control steps for that motion.

The right wrist is now vertical. The opposite-yaw intermediate orientation, formed by applying a +45° rotation about Z to the 90° rotation about Y, has the wxyz quaternion [0.653, −0.281, 0.653, 0.281]. I will target that orientation, with an estimated rotation of 0.785 rad, for 10 control steps.

Was the rounded quaternion’s norm approximately 0.99996? Checking its squared components, 2 × 0.653² + 2 × 0.281² gives 2 × 0.426409 + 2 × 0.078961 = 0.852818 + 0.157922 = 1.01074. I used the wrong components. The wxyz quaternion for Rz(45°) × Ry(90°) should be [0.653281, −0.270598, 0.653281, 0.270598], rather than using 0.281 for the smaller components. I will use [0.6533, −0.2706, 0.6533, 0.2706] for the right wrist and keep the left target quaternion at [0.5, −0.5, 0.5, 0.5].

The right wrist has only partly completed the rotation. I will continue toward the +45° intermediate orientation at the same position above the staged bar for 10 control steps.

The right wrist has reached the +45° yaw orientation, and the bar now appears diagonal in the opposite direction in its wrist view. I will try completing the rotation to +90° yaw, using the same wxyz quaternion [0.5, -0.5, 0.5, 0.5] that the left gripper used. The remaining orientation change is approximately 0.785 rad. I will use 10 control steps.

The right wrist is almost at its final orientation. The bar now appears vertical in the right wrist view, centered at approximately (360, 160) pixels. I will continue toward the final wrist quaternion [0.5, -0.5, 0.5, 0.5] in wxyz order for 10 control steps.

The right wrist has now reached the final orientation. The bar’s center appears around (365, 180) pixels in the right wrist view, slightly to the right. The current link6 X and Y coordinates are (0.108, −0.198) m, and the staged bar may be at approximately those same coordinates. Could the apparent offset be due to the camera orientation? With the left gripper at the same orientation and position, the bar’s image center was around x = 290 pixels at contact height, whereas it is now around x = 365 pixels from the higher pose. It may become centered as the right gripper descends. I will lower the right link6 toward z = 0.925 m using 3 control steps.

The bar’s center appears at image x = 380 pixels, about 60 pixels right of center. I should correct the alignment before descending farther. With the current orientation, local Y points along environment −X, and image right corresponds to −local Y, or environment +X. Moving the gripper toward environment +X should therefore shift the bar left in the image toward the center. The right link6 is currently at x = 0.108 m; a target near x = 0.12 m may improve the alignment. During the successful left-arm grasp, link6 was at x = 0.107 m and the bar appeared near image x = 330 pixels at the higher height of z = 1.0 m. With the right arm at x = 0.108 m, it appeared near image x = 365 pixels. Could that difference come from the arms’ camera extrinsics, or has the bar moved? Perhaps the staged bar is actually near environment x = 0.13 m. I will correct the right link6 X position by +0.015 m to 0.123 m. The bar’s image y coordinate of about 210 pixels looks acceptable. I will use 3 control steps to make this lateral correction while lowering link6 another 0.039 m to z = 0.927 m.

The bar’s center now appears at image x = 350 pixels, which looks well aligned. The right link6 is at z = 0.934 m; that may be close enough to close the gripper now. However, the successful left-arm grasp used z = 0.927 m, and table contact may occur around z = 0.924 m. I will lower the right link6 another 0.007 m toward z = 0.927 m over 2 control steps, then plan to close the gripper for 4 steps.

The right gripper is ready to grasp the last bar. I will close it for 4 control steps.

The right gripper’s opening command is 0.178, and the pads straddle the bar’s width, which looks like good contact. I will test the grasp with a 3-step lift toward a right link6 height of z = 0.953 m.

The bar moves with the right gripper during the lift. Its opening command is now 0.081; the bar may be slipping or rotating slightly, but it remains held. I should lift it higher before transporting it, perhaps to a link6 height of z = 1.02 m. I considered a right link6 target of (0.20, −0.15, 1.03) m, an estimated distance of 0.11 m, with the vertical wrist orientation held steady for 10 control steps. The left arm will remain stationary in clear space. I should lift before approaching the red basket to avoid rim contact. I estimate that the vertically held bar hangs 0.17 m below link6, so a link6 height of z = 1.03 m would put the bar around z = 0.86 m and its bottom around z = 0.84 m, providing clearance. A red-basket target of (0.307, 0.04, 1.0) m may be reachable with the current wxyz quaternion [0.5, −0.5, 0.5, 0.5], previously used by the left arm. At x = 0.307 m, the target is on the right arm’s own side, and this orientation may work better than the earlier negative-yaw orientation. I could approach through (0.27, −0.04, 1.02) m, then move to the basket center at (0.307, 0.04, 0.99) m. For the immediate action, I will instead target right link6 at (0.25, −0.10, 1.03) m, an estimated distance of 0.165 m from its current pose, for 10 control steps. Then I can continue toward red while keeping the left arm stationary.

The bar dropped during transport. I see it on the table near (390, 290) pixels in the high-camera view, and the right gripper is empty and closed. The grasp was not secure. It fell near the original staging area but moved somewhat. My first estimate of its new position is x = 0.15 m, y = −0.22 m. Using high-camera coordinates (392, 291) pixels and an assumed height of z = 0.75 m gives x = 0.156 m, y = −0.252 m. This is closer to the right arm and appears within reach. The right link6 is currently at (0.231, −0.119, 1.016) m. The bar appears diagonal, so its orientation has changed. Another reading places it near (391, 291) pixels, extending from (379, 309) to (398, 266) pixels, with its long axis approximately vertical in the image. Could its top be red? Using a center of (391, 288) pixels at z = 0.75 m gives x = 0.153 m, y = −0.24 m, similar to the earlier estimate. I will reopen the right gripper and move link6 above it to (0.155, −0.24, 1.0) m, an estimated distance of 0.145 m, for 8 control steps. I will retain the widthwise wxyz quaternion [0.5, −0.5, 0.5, 0.5] and hold the left arm stationary. Then I can center the pads, lower, close, and carefully test the grasp again. There are 428 control steps remaining; I need to finish sorting and reset the arms before the task can succeed. The opening command changed from 0.178 at closure to 0.081 after the lift and then to 0 during transport. I interpret this as the bar gradually slipping because the pads did not have enough contact. Perhaps pinching the thin, flexible wrapper across its center did not provide enough friction. I could choose a thicker middle section or the red end, whose width might be about 0.02 m rather than the middle’s 0.015 m. Another possibility is to lower link6 to z = 0.92 m instead of 0.927 m, 7 mm lower, for more pad overlap, although table contact seems to prevent descent below about z = 0.924 m with the vertical orientation. The left arm previously held it at z = 0.927 m through transport, whereas the right grasp slipped. Standing the bar on an edge seems unnecessary if I can secure it and move slowly to the nearby right basket. From the estimated bar position at x = 0.155 m, y = −0.24 m to the red basket center at x = 0.307 m, y = 0.05 m, I estimate a transport distance of 0.32 m. I could lift link6 only to z = 0.98 m, putting the object around z = 0.81 m, rather than raising it to 1.03 m. Could the higher lift and its dynamics have contributed to the slip? Supporting it from below with both arms is another possibility, but the skill advises avoiding two-arm manipulation unless necessary, so I will not use the left arm to assist now. A secure right-arm grasp followed by placement in two motions may be sufficient. Letting closure settle before lifting may be the most useful change. I used only 4 closure steps followed immediately by a 3-step lift, and the command decreased from 0.178 to 0.081 during that lift, perhaps because closure interpolation was still underway. Would holding until the opening stabilized at 0.178 have helped? For the first Snickers bar, I added 3 closure steps and observed a stable opening command of 0.189 before lifting. This time, after 4 closure steps, I will add 3–5 steps holding the pose and commanding closure until it settles, then perform a small 3-step lift check. That may resolve the slipping problem.

The bar’s center appears near (255, 120) pixels in the right wrist view, left of center and high in the image. The right link6 has not yet reached the target X and Y coordinates of (0.155, −0.24) m; its measured coordinates are (0.173, −0.212) m. Will continuing toward that target center the bar? With the current wrist orientation, image right corresponds to environment +X. Moving the gripper along +X would shift the bar farther left in the image, so I need to move the gripper toward negative X to shift the bar right. The target x = 0.155 m is 0.018 m lower than the current X coordinate, which seems appropriate. Moving to y = −0.24 m may also shift the bar vertically in the image, though I am unsure in which direction. I will continue toward the target for 6 control steps.

The bar’s center appears near (280, 80) pixels in the right wrist view, still left of center and too high in the image. My estimate of its environment-frame Y position seems wrong: the right link6 is at y = −0.24 m, but the bar may actually be around y = −0.28 m after falling closer to the front. I should triangulate its position using corresponding points in the calibrated high and right wrist views. The gripper is currently vertical. I estimate the bar center near (390, 290) pixels in the high view and (275, 60) pixels in the wrist view. The white bottom end appears to correspond between approximately (383, 307) pixels in the high view and (235, 180) pixels in the wrist view. For the center triangulation, I will tentatively use (390, 287) and (270, 70) pixels. I will run a script to calculate the position from these correspondences.

Triangulation estimates the bar’s center at (0.138, −0.206, 0.77) m, but I had assumed it was on the table at z = 0.75 m, and the pixel correspondences remain uncertain. The first match has a low error; could the bar be lifted or leaning, explaining z = 0.77 m? In the high-camera view it appears to be on the table, with the top of its center around z = 0.77 m. The bottom point is approximately (0.121, −0.246, 0.767) m. Its long axis therefore runs from bottom X and Y coordinates of (0.121, −0.246) m to top coordinates of (0.152, −0.179) m, with an estimated center at (0.137, −0.212) m. Is the current right link6 position at X and Y coordinates (0.155, −0.24) m ahead of the bar? Did I move too far toward the front or left? Its current y = −0.24 m is less than the estimated bar-center y = −0.212 m, so the gripper is too close to the front, which explains why the bar appears high in the wrist image. I should target link6 above the estimated center at (0.138, −0.212) m. I will move Y by +0.028 m to −0.212 m and X by −0.017 m to 0.138 m to center the gripper, targeting (0.138, −0.212, 1.0) m for 6 control steps.

The bar’s center appears near (350, 130) pixels in the right wrist view, which looks well aligned. I will lower the right link6 toward z = 0.927 m in short increments. I expect 3 control steps to bring it to about z = 0.966 m, another 3 to about z = 0.933 m, and then 2 to z = 0.927 m. I can start with two successive 3-step actions.

The bar’s center appears near (380, 140) pixels in the right wrist view, still slightly right of center. With the current orientation, which matches the left wrist’s orientation, moving the right gripper along environment +X should center it. The right link6 is currently at x = 0.138 m, and the estimated bar center is also at x = 0.138 m, but the camera view shows an offset. Perhaps the alignment will be acceptable at contact height. I will continue lowering for 3 control steps while shifting the right link6 by +0.01 m in X to 0.148 m.

The bar’s center appears near (350, 170) pixels in the right wrist view, which looks well aligned. The right link6 is at z = 0.935 m and needs to descend another 0.008 m. I will use 2 control steps for the final descent, then close the gripper for 5 steps and hold it closed for another 5 steps to let the grasp settle.

The bar lies diagonally in the right wrist view, with its center at approximately x = 320 pixels, and the gripper is at contact height. The alignment looks good. I will close the right gripper and hold its pose for 6 control steps so the grip can settle before lifting.

The right gripper’s opening command is 0.12, but has it stabilized? I will hold the closure for 4 more control steps to check before lifting.

The right gripper’s opening command has stayed stable at 0.12, which looks promising. I will make a smaller test lift of 0.015 m rather than 0.026 m, using 3 control steps toward a right link6 height of z = 0.942 m. Then I will check the opening command again.

The right gripper’s opening command remains stable at 0.119 after the test lift, which looks promising. I could lift link6 to z = 0.975 m, an increase of 33 mm, over 5 control steps and then transport the bar at a lower height. I estimate the bar’s current center at (0.148, −0.212, 0.77) m and the red basket’s center at x = 0.307 m, y = 0.05 m. At link6 z = 0.975 m, I estimate the bar’s center would be at z = 0.80 m, perhaps only just at rim height. Raising link6 to z = 0.98 m or 1.0 m should provide more clearance. Another option is to lift to z = 1.0 m over 6 steps, then move toward the red basket’s front approach at (0.26, −0.06, 1.0) m, an estimated distance of 0.196 m. I could combine the lift and translation slowly over 10 steps; that may be stable now that the closure has settled. I attribute the previous slip to transporting before the grip had settled. I will use the combined target (0.25, −0.08, 1.0) m, an estimated distance of 0.178 m, over 12 control steps, keeping the right wrist orientation steady and the gripper closed. The left arm will hold its current pose.

The grasp has remained stable during transport. In the high-camera view, the bar hangs vertically from the gripper near (450, 230) pixels, in front of the red basket. The right link6 is currently at (0.24, −0.097, 0.991) m. I estimate that the bar hangs 0.17 m below it, at about z = 0.82 m. The basket’s front rim may be around y = −0.04 m; with the bar’s center at approximately y = −0.097 m, it is still in front of the basket. I will move the right link6 over the red basket interior to (0.30, 0.02, 1.0) m, an estimated distance of 0.135 m, for 10 control steps. I will retain the wxyz quaternion [0.5, −0.5, 0.5, 0.5] used by the left arm earlier. This target is on the right arm’s own side, so the precheck may pass, though I am not certain. If it fails, I could use the nearer intermediate target (0.28, −0.02, 1.0) m.

The bar has dropped again at the red basket’s front rim and appears on the table near (448, 225) pixels. Could its environment-frame Y position be around −0.03 m? The opening command has reached 0 and the wrist has tilted at the rim; I interpret this as a collision knocking the bar loose because I approached too low. I should regrasp it nearby, lift higher, and then move over the basket center. I initially estimate the bar’s X position at about 0.27 m. Projecting (448, 225) pixels with an assumed height of z = 0.75 m gives x = 0.265 m and y = −0.011 m. The red basket center is approximately (0.307, 0.055) m in X and Y, so the bar is now very close to the front rim, around y = −0.01 m. The right gripper is empty and closed, with link6 at (0.274, −0.032, 0.991) m. Its measured wxyz quaternion, [0.486, −0.511, 0.509, 0.494], is close to the widthwise orientation [0.5, −0.5, 0.5, 0.5] used by the left arm. I could reopen and move above the bar to (0.27, −0.02, 1.0) m, lower, let the grasp settle, and then lift to z = 1.05 m or 1.08 m before crossing the rim. I also considered an X target around 0.285 m. My refined reading of the high-camera center gives x = 0.265 m and y = −0.012 m. In the wrist view, the red rim fills the top and the bar’s white tip appears toward the bottom-right near (400, 280) pixels. Do I need to move downward? For now, I will open and center link6 at (0.265, −0.012, 1.0) m, then lower toward z = 0.927 m. The bar may be leaning against the rim, with its top around z = 0.78 m, but it should still be graspable. Once the grasp is secure, I could lift straight to z = 1.06 m over 8 control steps while holding y = −0.012 m. I estimate the bar’s bottom height as 0.75 + 0.133 = 0.883 m after that lift, clearing a rim estimated at z = 0.82 m. I could then move inward to y = 0.05 m at z = 1.06 m, although the high target may fail the local IK precheck. A target near x = 0.27 m and y = 0.05 m might be reachable with this wrist orientation. The earlier vertical target at z = 1.02 m and y = 0.05 m failed from x = 0.25 m, so feasibility remains uncertain. Another option is to lift while retracting slightly to y = −0.06 m at z = 1.06 m, then move over the center at z = 1.03 m. The key is to provide more rim clearance. There are 365 control steps remaining, which I judge sufficient for recovery.

The right wrist’s measured wxyz quaternion is [0.473, −0.527, 0.523, 0.475]. I attribute the drift to the rim collision; the target orientation has not been fully restored. The red rim mostly occludes the bar, leaving only its white tip visible at the bottom of the wrist view. Perhaps the bar’s center is under the rim, but its exposed end near the front edge may be accessible with vertical fingers closing along environment X. Lowering at the current X and Y coordinates could collide with the rim. The fingers are at y = −0.022 m, but I am unsure of the rim’s Y position. The red front edge appears near image row 209 pixels. I could estimate its world position using a front-top height of z = 0.80 m and a pixel location around (450, 207). The earlier basket-center estimate used z = 0.79 m and y = 0.052 m. At image row 207 and z = 0.8 m, I tentatively estimate the front edge at y = −0.055 m. Reading the bar outside the front at image row 225 with z = 0.75 m suggests y = −0.05 m. Using row 207 and z = 0.82 m instead puts the rim around y = −0.045 m. Could the bar center be at y = −0.03 m? These estimates may be off. The current link6 Y position of −0.022 m may put the vertical fingers above the rim rather than in front of it. If the bar is outside at y = −0.04 m, the gripper is behind it, which would explain the occlusion. Should I pull the bar away from the rim with the left arm? Alternatively, the right gripper could grasp the exposed white tip around y = −0.07 m. Moving forward along negative Y toward that end may be better than targeting a center hidden under the rim. However, the bar’s orientation appears to have changed when it fell. In the high view, it extends approximately from (429, 216) to (467, 235) pixels. Another reading gives an X span of 427–469 pixels, a length of 42 pixels, and a Y span of 216–237 pixels. It looks roughly horizontal and diagonal, suggesting that its long axis now runs mostly along environment X with some Y component, rather than along its initial Y direction. I should inspect a high-camera crop and the wrist view after moving to check this interpretation. If it is correct, the current orientation, which closes along X, would again close along the bar’s length and be unsuitable. The original successful vertical wxyz quaternion [0.707, 0, 0.707, 0] closes along environment Y, which should now pinch across the bar’s width. I will return the right wrist to that orientation while it is high, then align it with the bar. From the nominal current orientation, the rotation is about 1.57 rad, so I need an intermediate +45° yaw quaternion, approximately [0.653, −0.271, 0.653, 0.271]. From the measured quaternion, could the full rotation be about 1.62 rad? I considered calculating a Slerp intermediate, perhaps [0.59, −0.28, 0.59, 0.26]. The existing +45° intermediate may be about 0.8 rad away; from the nominal orientation it is about 0.785 rad away. I will use that intermediate first, then return to vertical. Near x = 0.265 m on the right arm’s own side, I do not expect the earlier negative joint limit to obstruct this return. At an approximate link6 height of z = 1.0 m, I estimate the fingertips at z = 0.84 m, above the rim at z = 0.82 m, and judge the rotation clear. There are 359 control steps remaining. I will rotate the right wrist to the intermediate orientation at its current position and hold the left arm stationary.

The right wrist has only partly completed the rotation, and the bar’s white end is visible near (480, 160) pixels in the wrist view, under the rim. I could continue toward the intermediate orientation, estimating about 0.3 rad remaining, and then rotate to vertical. Could I instead target vertical directly for 10 control steps? From the current wxyz quaternion [0.548, −0.431, 0.622, 0.356], I estimate the rotation to vertical at about 0.8 rad, within the 1.0 rad limit. I could also move forward to y = −0.05 m to get a better view of the bar, but combining translation and rotation might fail the precheck, even though the target is on the right arm’s own side and seems likely to work. I will keep its position unchanged and command the vertical orientation for 10 control steps.

I will first return the right wrist to the nearer intermediate wxyz quaternion [0.653, −0.271, 0.653, 0.271], estimating the remaining rotation at about 0.44 rad. After reaching that intermediate orientation, I will continue toward the vertical orientation.

The right gripper’s opening command unexpectedly changed to 0.582 despite being commanded open. Its orientation has not reached the target, and its position drifted 0.009 m left and −0.005 m along Y. The fingers are near the red rim; one may be contacting the basket and causing these disturbances. I appear to be rotating too close to the rim. I considered lifting the right link6 to z = 1.05 m while finishing the rotation. I will try the target (0.26, −0.04, 1.06) m with the vertical wxyz quaternion [0.707, 0, 0.707, 0] and the gripper open, using 10 control steps. I tentatively estimate the remaining rotation at about 0.6 rad, perhaps 0.68 rad. The planned vertical lift is 0.066 m and seems safe. This should provide rim clearance while allowing the wrist to align. The precheck may pass on the right arm’s own side at y = −0.04 m and z = 1.06 m; if it fails, I will use an intermediate pose. The left arm will remain stationary.

The right gripper is now clear of the rim, and the whole bar is visible diagonally in the wrist view, from its red end at the bottom-left to its white end at the top-right. Its long axis appears roughly vertical but tilted. The current right-wrist quaternion is [0.683, −0.151, 0.701, 0.134] in wxyz order, which I estimate as about +22° of yaw. Will the bar appear horizontal once the wrist reaches the vertical orientation at 0° yaw? I expect it will, which looks suitable for the grasp. I will finish rotating the right wrist to that orientation over 8 control steps while keeping it at the same high position.

The bar’s long axis still appears diagonally vertical in the wrist image, rather than horizontal as it did at the earlier staging position. Has it rotated so that its long axis again has a large environment-Y component? I should not assume that. In the wrist view, the pads close horizontally, and the bar extends approximately from (300, 160) to (450, 0) pixels, with a slope of −1.07. The current orientation therefore seems suitable for contacting its sides across the short dimension, even though the bar is diagonal. A grasp near its image center at (375, 80) pixels may be stable. The bar is about 55 pixels right of the image center. With the vertical orientation, local Y points along environment Y, and image right corresponds to −local Y, or environment −Y. Moving the gripper toward negative Y should shift the bar left in the image. The current link6 Y position is −0.041 m; moving it by −0.015 m to −0.056 m may center the bar. Its high-camera center near (448, 225) pixels suggests an environment position around x = 0.27 m, y = −0.03 m, close to the gripper’s current x = 0.261 m. I considered a link6 target of (0.27, −0.056, 1.02) m, then lowering about 0.13 m toward z = 0.927 m in increments. At the current height of z = 1.058 m, the bar is far below the wrist camera and should move down in the image as the gripper descends. However, a center grasp could put the fingers too close to the red rim. A Y target near −0.06 m would nominally be outside the basket. At link6 z = 1.02 m, I estimate the fingertips at z = 0.862 m, above the rim; at link6 z = 0.94 m, they would be at z = 0.782 m, below the estimated rim height of z = 0.82 m. If the bar center is around y = −0.03 m, the fingers could still hit the rim. Grasping the exposed white end farther outside, perhaps near y = −0.08 m, seems safer than descending beside the center under the rim. The white end is at the top-right of the wrist view and near (465, 234) pixels in the high view, suggesting environment coordinates around x = 0.30 m, y = −0.06 m. I read the full bar as extending from its red end near (428, 215) pixels beside the basket front to its white end near (468, 236) pixels outside. I will target link6 above the white end at (0.30, −0.07, 1.0) m with the vertical orientation, closing along environment Y, which seems roughly across the short dimension there. This end grasp may be stable enough if the pads pinch the thicker end, although the center of mass would be behind the grasp by about +0.03 m along Y. After securing and settling the grasp, I can lift and make the short move left and back into the basket. I estimate the front edge at y = −0.04 m; could the right edge be at x = 0.39 m? The target x = 0.30 m is within the basket’s width, but y = −0.07 m appears outside its front edge, so I judge this approach clear. I will first move above the white end for 6 control steps.

The right arm has not yet reached its target; its measured link6 position is (0.281, −0.052, 1.031) m. In the right wrist view, the bar’s center appears near (350, 130) pixels and its white end near (400, 50) pixels, in the upper-right area. Will continuing toward the target position of (0.3, −0.07, 1.0) m center the white end? This moves the gripper toward positive environment X and negative Y, though I am unsure whether that corresponds to moving right and down in the image. It may bring the white end into alignment. I will continue toward the same target for 6 control steps.

The bar’s white end appears near (370, 120) pixels and its red end near (255, 280) pixels in the right wrist view, with its length running diagonally. Is the gripper’s contact center at (320, 275) pixels near the red end? I want to grasp the white end, but moving link6 has changed the position of the whole bar in the image. I will use a grasp point near (370, 125) pixels on the white end and aim to bring it to the contact center at (320, 275) pixels during descent. Lowering has previously moved the bar’s image center from y = 150 to y = 220 pixels. I therefore expect the white end, currently at y = 120 pixels with link6 around z = 1.0 m, to move to approximately y = 250 pixels when link6 reaches z = 0.927 m. That should put it near pad height. The white end at image x = 370 pixels is slightly right of center. With the current vertical wrist orientation, image right corresponds to environment −Y. Moving the gripper along −Y should move the object relatively along +Y, shifting it left in the image. I will change link6 Y from −0.069 m to −0.08 m, a correction of −0.011 m. Link6 X = 0.3 m matches the estimated white-end world X position of 0.30 m. I will target right link6 at (0.3, −0.08, 0.927) m, keeping the vertical orientation and fingers open. This should align the white end near image x = 320 pixels. I will approach in 3-step increments with the Y correction.

The right link6 descended only 0.004 m and shows a slight roll of about 0.04. Could this be due to contact with the basket rim? The gripper is still high, and perhaps proximity to the basket is preventing it from tracking the target that passed the precheck. Its current height is z = 0.997 m despite the target of z = 0.927 m, though only 3 control steps have elapsed. An earlier 3-step action produced 0.033 m of descent; this time it descended only 0.004 m, possibly because the wrist orientation is adjusting. I will continue for another 3 steps toward the same target with the vertical wrist quaternion.

The right link6 height is stuck at z = 0.996 m, above the intended contact height, and the wrist quaternion still has components of about 0.025 that I have been interpreting as roll drift. Perhaps the arm is near a joint or reach limit when asked to descend at y = −0.08 m with a vertical wrist, rather than being blocked by a collision. Earlier, it descended successfully with a vertical wrist at x = 0.108 m, y = −0.198 m. Is the arm now fully extended at approximately (0.3, −0.08, 0.996) m? Retracting toward its body may allow it to descend, as it did earlier in the episode. I considered moving link6 to x = 0.3 m, y = −0.12 m, z = 0.96 m, then lowering farther. The exposed bar end may be around y = −0.07 m, so this would offset the gripper from it, though the end might remain visible. A relative Y offset of +0.04 m could shift the object left in the wrist image, but I am unsure by how much. Perhaps that would still allow an end grasp. Another option is a pitched approach like the earlier Snickers pregrasp at (0.125, −0.151, 0.94) m; the vertical approach subsequently reached z = 0.924 m after alignment. If the arm’s base is around y = −0.45 m, the present y = −0.08 m pose is about 0.37 m away along Y, compared with about 0.25 m for the earlier approach. At the current high position, the arm may be near a singular configuration. I will retract farther to y = −0.15 m while lowering. That would put the gripper about 0.08 m in front of the estimated exposed end, so it would not yet be aligned for a vertical grasp. However, I can retract and lower first, then move forward again at the lower height. I will command the right link6 to (0.3, −0.15, 0.94) m with the vertical wrist orientation for 10 control steps. This moves it away from the basket and downward. Afterward, an approach to (0.3, −0.08, 0.94) m may be reachable.

The bar’s white end appears centered near (190, 180) pixels in the right wrist view and is moving toward the finger center. After another 3 control steps, I expect the right link6 Y position to be about −0.084 m, and the bar’s center may appear near image x = 280 pixels. I will continue for 3 steps toward the Y target of −0.06 m.

The right gripper’s opening command has decreased from 1 to 0.902 despite being commanded open, suggesting finger contact with the bar or the rim. In the wrist view, the left finger of the right gripper appears to touch the bar’s side near (190, 280) pixels, while the white end is centered near (320, 200) pixels. The left pad may already be against the bar from the approach. Could I close now? The current link6 height is z = 0.941 m. I estimate the fingertip height at z = 0.783 m and the bar’s top at z = 0.76 m. Although the fingertip estimate is slightly above the bar, the apparent side contact suggests there may be enough overlap. I considered another lateral correction, but the white end is centered at (320, 200) pixels, within a finger gap spanning approximately x = 125–520 pixels at that image height. The bar’s width may be about 100 pixels. At the contact line near image y = 275 pixels, the red-and-white body is centered near x = 260 pixels; the left finger near x = 190 pixels appears to touch it, while the right finger near x = 520 pixels remains farther away. I expect closure to center the object. Lowering another 0.01 m toward z = 0.93 m could risk contact with the rim. I prefer to close at the current height of z = 0.941 m, let the grasp settle, and then test it with a lift. The white end appears above the pad and the red body below it, with contact likely near fingertip height. I will close the right gripper for 6 control steps while holding both arm poses.

The grasp missed, leaving the bar to the left of the closed fingers. I need to move the gripper left in the wrist image, which corresponds to environment +Y because image right points along environment −Y. Moving the gripper along +Y should shift the bar right in the image toward the finger center. The earlier target of y = −0.06 m would have continued that correction from y = −0.088 m, but I stopped at −0.088 m and closed while the bar’s body was still left of center. At z = 0.941 m, the left finger contacted the bar because the gripper was too far right in the image, or too far along negative environment Y. I will reopen and move +0.028 m along Y to y = −0.06 m, keeping z = 0.941 m unchanged. This may center the bar for another closure. I am planning a short 3-step adjustment.

The right gripper’s opening command is 0.398 after being commanded open. I expected it to increase from 0 to 1 over 4 control steps, reaching approximately 0.83, so I interpret the lower value as contact. The bar now appears between the left finger at image x = 320 pixels and the right finger at x = 390 pixels near y = 270 pixels, with both fingers contacting it. The fingers are partly closed around the bar despite the open command. I might already have a grasp at an opening command of 0.398, though this larger-than-usual value could reflect the open command combined with a collision. The bar’s center appears near (380, 220) pixels, the pads are near x = 320 and 390 pixels, and the bar’s width is approximately 80 pixels. I will command the right gripper closed and hold the current centered pose for 6 control steps to establish a secure pinch.

The right gripper’s opening command is still 0, but the bar may be between the closed fingers on the left side, possibly held near an edge. A zero opening does not necessarily mean the grasp missed if the object is caught in the V-shaped area outside the pads. It could still be pinched near its end, so the grasp remains uncertain. I will test it with a 3-step lift, raising the right link6 by 0.025 m to z = 0.966 m while retracting to y = −0.08 m to move away from the rim. If the bar is held, it should move with the gripper; otherwise, it should stay where it is.

The bar stayed on the table during the lift, so the grasp missed. Perhaps I need to lower the gripper farther. At the previous link6 height of z = 0.941 m, I estimated the fingertip height at z = 0.783 m and the bar’s top at z = 0.77 m, leaving the fingers too high. I avoided further descent, but I now think I needed a link6 height of z = 0.924 m. The previous height was 17 mm above that, which explains the miss. I will reopen the right gripper and lower it to z = 0.924 m at its current X and Y coordinates, then close again. Table contact may occur at that height. Its current y = −0.08 m is outside the rim, so I judge the descent safe. From the current height, the planned descent is 0.041 m. I expect the next 3 steps to bring link6 to about z = 0.932 m, followed by further descent to z = 0.924 m. The bar appears diagonal in the wrist image, centered near (300, 240) pixels, with the closed fingers at image x = 320 pixels, so the lateral alignment looks good. I will reopen and descend for 3 steps.

The right gripper’s opening command is 0.656 after 3 control steps, which could reflect contact or ongoing interpolation. The bar now appears between the pads in the wrist view, with the left finger at image x = 250 pixels, the right finger at x = 420 pixels, and the bar’s center at x = 300 pixels. Should I finish reopening before closing again? I commanded the gripper open, and I expected its opening command to rise from 0 to about 0.625 after 3 steps. The reported 0.656 may therefore just reflect interpolation rather than contact. The right link6 is at z = 0.932 m, close to the target height. I plan to lower it to z = 0.924 m over 2 steps while continuing to open; I expect the opening command to reach about 0.83. Then I will close the gripper for 6 steps.

The right gripper’s opening command is 0.621 despite being commanded open. Could this indicate contact with the bar or the rim? In the wrist view, the pads are at approximately x = 250 and 420 pixels, and the bar spans x = 250–420 pixels, appearing to touch both pads at y = 260 pixels. I interpret this as contact already established while reopening after the previous closure. I will command the right gripper closed and hold its current pose for 6 control steps. I expect the opening command to settle at about 0.12.

The bar is centered vertically between the right pads, and the opening command is 0.116. I will lift the right link6 straight upward to z = 1.06 m over 8 control steps, keeping X and Y unchanged at x = 0.30 m and y = −0.08 m, outside the rim. This requests a rise of 0.136 m, or 0.017 m per step, which I judge safe. After 8 steps, it may only reach z = 1.04 m. I expect the grip to remain stable. After the lift, I could move inward to (0.30, 0.04, 1.04) m, though I am unsure whether that target will pass the precheck. First, I will execute the 8-step lift toward z = 1.06 m.

The bar slipped again during the lift, despite the previously stable opening command of 0.116. The right gripper rose 0.094 m, its opening command reached 0, and the bar fell back onto the table outside the red basket. Why did it slip? Perhaps gripping the smooth wrapper at the very end lets it slip under its own weight, or perhaps the closing force is insufficient. The first successful Snickers grasp was across its width near the center rather than at an end. I should now grasp near the center of mass, as the skill recommends. The bar appears centered near (465, 234) pixels in the high-camera view, extending horizontally from approximately x = 440 to 490 pixels. I interpret its long axis as running along environment X. It has fallen farther right and now appears fully outside the basket’s front-right area, making its center accessible. My rough world-position estimate is (0.31, −0.06) m in X and Y. Using the pixel center (465, 234) with an assumed height of z = 0.75 m gives x = 0.308 m and y = −0.064 m. Another tentative center estimate is (0.312, −0.064) m. I can use the vertical wrist orientation, which closes along environment Y, to grasp across its short dimension near a link6 target of (0.31, −0.065, 0.924) m. The earlier grasp may have been near the white end; the bar has now shifted, so I need to align with its new center. I expect a center grasp to reduce the torque that caused the end grasp to slip. The right link6 is currently at (0.3, −0.084, 1.018) m, with an empty, closed gripper and the vertical orientation. I will reopen it and move above the estimated center at x = 0.31 m, y = −0.064 m, then lower gradually toward z = 0.924 m. There are 250 control steps remaining, so I need this recovery to work. I could use the left arm to support the bar during the lift, but I do not think that is necessary with a center grasp. The first successful Snickers grasp had an opening command of 0.188, compared with 0.116 for this thinner bar. I still expect a fully settled center grasp to hold it. After closure settles, I will make a small test lift before transporting it. For the immediate action, I will open the right gripper and move link6 to (0.31, −0.064, 0.98) m over 6 control steps, keeping the vertical orientation and the left arm stationary. Then I will lower it in a 3-step action.

The bar appears vertical in the right wrist view, centered near (450, 150) pixels, about 130 pixels right of center. My current right link6 position at x = 0.31 m and y = −0.064 m leaves it offset to the right in the image. Image right corresponds to environment −Y, so I initially considered moving the gripper about 0.03 m farther along −Y to shift the bar left. Using the bar’s current high-camera center near (465, 241) pixels, I estimate its environment-frame center at x = 0.308 m and y = −0.079 m. My earlier Y target of −0.064 m was too far back along +Y, explaining the image offset. I will keep link6 X at 0.31 m and revise its Y target to −0.079 m. The bar is fully outside the basket. The right link6 is currently at z = 0.981 m. I will lower it toward z = 0.924 m while making the Y correction. I expect 3 steps to bring it near z = 0.95 m, followed by another 3 toward z = 0.924 m. I will take the first 3-step action now.

The bar still appears to the right in the wrist view. The right link6 is at y = −0.072 m rather than the target of −0.079 m, and it may need another roughly −0.02 m adjustment. The bar’s image center is near x = 460 pixels versus the image center at x = 320 pixels, an offset of 140 pixels. With an estimated depth of 0.15 m and focal length of 397 pixels, could that correspond to about 0.052 m in the environment frame? Image right corresponds to environment −Y; I also estimate that moving the gripper 0.025 m along −Y could shift the bar by those 140 pixels. A possible Y target is −0.10 m. Earlier, the bar was centered at y = −0.08 m during the exposed-end grasp. Has its environment-frame Y position changed after slipping? Its high-camera center now appears near (466, 241) pixels. With an assumed height of z = 0.75 m, I previously estimated that image row 241 corresponded to y ≈ −0.08 m, but I should check precisely. I will use Python and the high-camera calibration to intersect the ray through (466, 241) pixels with the plane z = 0.75 m.

The projection places the bar’s center at approximately x = 0.326 m and y = −0.090 m in the environment frame, rather than my earlier estimate of (0.31, −0.079) m. My earlier coordinates were too small; the high-camera center at (466, 241) pixels appears correct. I will target the right link6 at (0.326, −0.090, 0.924) m to center the gripper over the bar. Its current X and Y coordinates are (0.31, −0.072) m, so the planned corrections are +0.016 m in X and −0.018 m in Y. I will make these corrections while continuing the descent for 3 control steps. I expect this to bring the bar’s center left and upward in the wrist view.

The bar’s center still appears at image x = 420 pixels rather than x = 320 pixels, an offset of 100 pixels to the right. The right link6 is currently at x = 0.322 m and y = −0.086 m. Completing the small correction to x = 0.326 m and y = −0.09 m would, I estimate, shift the bar by only about 20 pixels, leaving an offset of about 80 pixels. Why does the estimated world position of (0.326, −0.09) m disagree with the wrist-image center at x = 420 pixels? Have I correctly matched the high-camera center at (466, 241) pixels to the bar’s center in the wrist view? Perhaps the camera offset and optical angle mean that a point directly below link6 does not project to (320, 275) pixels at the current height. Should it at least project to image x = 320 pixels at contact? I will project the estimated bar center, using z = 0.75 m, through the current right-wrist calibration to check whether it matches the observed image position. Then I can work out a link6 target that places the bar at the projected contact center, about 0.15 m along the fingers’ local +X direction.

The image correspondences are uncertain, but they estimate the bar’s center at approximately (0.319, −0.104, 0.766) m in the environment frame. This puts its Y coordinate about 0.014 m more negative than the earlier table-plane estimate. I should move the right link6 toward x = 0.319 m, y = −0.104 m, and z = 0.924 m. Would that shift the bar left in the wrist image? Moving the gripper from its current y = −0.086 m toward y = −0.104 m moves it along environment −Y, leaving the object relatively farther along +Y, which should shift it left in the image. I will use a right link6 target of (0.32, −0.105, 0.924) m for 3 control steps. This should center the bar horizontally.

The bar is now centered at approximately (320, 270) pixels in the right wrist view, with its long axis vertical. The fingers’ inner edges are at approximately x = 125 and 520 pixels, and the bar is about 100 pixels wide, so its central body is well aligned between the pads. I will close the right gripper and hold this pose for 6 control steps.

The bar is centered in the right gripper, and the opening command is stable at 0.12. I will make a small test lift of 0.015 m toward a right link6 height of z = 0.939 m over 3 control steps.

The grasp remains stable after the small lift. Perhaps acceleration during the earlier 8-step lift caused the bar to slip. I will raise the right link6 gradually toward z = 0.954 m over 3 control steps, then check the grasp again. I can continue in 3-step increments toward z = 0.97 m and beyond, checking after each action. There are 226 control steps remaining, which should be enough. I will take the next 3-step lift now.

The grasp remains stable. I will lift the right link6 toward z = 0.984 m over 4 control steps, perhaps raising it by 0.03 m, then check the grasp again.

The grasp remains stable, though I wonder whether the bar is still on the table in the high-camera view. The white-and-red bar appears near (480, 228) pixels, outside the red basket. The gripper has lifted 0.06 m, and the bar may be at z = 0.81 m while still projecting outside the basket. I judge it acceptable to continue. I will raise the right link6 to z = 1.03 m over 5 control steps, a further 46 mm, then check the grasp again.

The grasp is stable, and the bar is hanging high. The red rim is visible at the left edge of the wrist view. I am still uncertain about the bar’s world-frame orientation: the gripper’s local +X axis points downward, while the bar appears horizontal along environment X near (480, 217) pixels in the high-camera view. Its vertical appearance in the wrist view may be due to the camera angle. It is held near its center, and I estimate its bottom at z = 0.86 m, clear of the rim. I initially considered moving inward along +Y from −0.104 m to 0.04 m while keeping link6 at x = 0.32 m and z = 1.03 m. That would request a Y displacement of +0.144 m. Over 6 control steps, it might actually move about 0.08 m, so I would inspect afterward. However, the precheck may fail because the high vertical pose at y = 0.04 m could be near the arm’s reach limit, even on its own side at x = 0.32 m. I will first use the nearer target (0.32, 0.01, 1.03) m, requesting +0.114 m along Y over 6 steps. I briefly considered continuing afterward to y = 0.06 m. The basket center is around y = 0.05 m. Its interior may span y = −0.02 to 0.14 m, with the front rim around y = −0.03 m and the back around y = 0.16 m. A target of y = 0.01 m should already put the bar in the front half, about 4 cm inside the estimated front rim, so there is no need to continue to y = 0.04 m. The bar’s center is approximately aligned with the gripper’s current y = −0.104 m. I will make the nearer inward move for 6 control steps.

The grasp remains stable. In the wrist view, the red basket occupies the left half, and the held bar is moving to its right. In the high-camera view, the bar appears near (475, 205) pixels, close to the front rim; it may already be inside, but I am not sure. I will continue moving the right link6 by +0.067 m along Y toward y = 0.01 m over 6 control steps.

At the current right link6 Y position of −0.022 m, the bar appears stable above the red basket’s front rim. Perhaps moving about 0.02 m farther along Y would put it sufficiently inside. I am considering a Y target of 0.025 m rather than 0.01 m, using 5 control steps. I estimate the actual motion might be about +0.03 m, bringing the measured Y position to approximately 0.008 m, after which I could release it. In the high-camera view, the bar’s center appears around (475, 180) pixels. The red basket spans approximately image x = 380–500 and y = 140–210 pixels, so the bar looks inside its front half. In the wrist view, the red basket bottom appears below the bar, whose center is around (320, 270) pixels. Releasing now might work, with the bar dropping from an estimated height of 0.85 m to the basket bottom at about 0.76 m. However, is the bar’s center at approximately the same Y coordinate as link6, −0.022 m? Its long axis may hang along environment Y. Another reading of the wrist view places the bar around (320, 250) pixels, with the red basket bottom beneath the lower half and the wooden tabletop still visible at the upper right. The basket interior may be farther left in the image, leaving the bar near its boundary. I will move farther inward before releasing. An estimated +0.03 m motion to approximately y = 0.008 m should bring more of the red interior beneath it. I will use 5 control steps.

The previous target narrowly failed the precheck with a position error of about 5.3 mm. I will use a nearer right link6 target at y = 0.005 m and z = 1.025 m, matching its current measured height. This requests an inward Y displacement of +0.027 m and may be reachable. I will use 4 control steps.

The red basket interior is now visible beneath the entire bar, so it is fully over the basket. I will release it over 5 control steps while holding both arms stationary.

Both chocolate bars are now inside the red basket. The high-camera view appears to show a clear table, two horses in white, three watches in blue, and two bars in red, with the second bar visible as a small white package beside the Snickers bar. I believe the sorting is complete, but the required arm return remains. Native success may trigger after the reset. There are 193 control steps remaining, which should be enough. The left link6 is currently at (−0.047, −0.273, 1.005) m, with vertical wxyz quaternion [0.5, −0.5, 0.5, 0.5] and an open gripper, above the table near the front of the blue basket. The right link6 is at (0.32, −0.004, 1.023) m, above red, with its gripper open. I need to move both arms into clear space before resetting. Moving the left arm directly toward its approximate initial pose of (−0.3, −0.352, 0.922) m with wxyz quaternion [0.707, 0, 0, 0.707] would require perhaps 0.3 m of travel, exceeding the 0.25 m bound, and about 1.57 rad of rotation. The right arm’s direct return toward (0.3, −0.352, 0.922) m would require about 0.36 m and 1.57 rad. Both would need intermediate motions. I initially considered retracting to left link6 (−0.2, −0.35, 1.0) m and right link6 (0.3, −0.30, 1.02) m, using quaternions halfway between their current vertical orientations and the initial orientation, then allowing 50 reset steps. Another option is to move the right arm to y = −0.25 m at the same X coordinate and z = 1.02 m, an estimated distance of 0.246 m. Would the halfway quaternion between its vertical orientation [0.707, 0, 0.707, 0] and the initial orientation [0.707, 0, 0, 0.707] be [0.9239, 0, 0.3827, 0]? I tentatively read the halfway Slerp quaternion as [0.92388, 0, 0.38268, 0], a 45° rotation about Y. Would local X then point diagonally forward and downward? I judge such a rotation safe at z = 1.02 m. The left arm’s rotation from [0.5, −0.5, 0.5, 0.5] to the initial quaternion may also be 1.57 rad; I could calculate its intermediate orientation with SciPy. A simpler option is to retract while holding the current vertical orientations, perhaps toward y = −0.42 m and z = 1.0 m, and then reset. Reset returns the joints to their initial configurations, so a separate wrist rotation is unnecessary if the arms are clear. However, the return could sweep the grippers through objects if it begins above the baskets. I should retract high and behind the front edge, around y = −0.35 m, before the return. I considered moving backward about 0.35 m along Y while retaining the vertical orientations. A right link6 target of (0.3, −0.32, 1.02) m is about 0.316 m away, exceeding the command bound. I could first use (0.3, −0.20, 1.02) m, about 0.196 m away, while moving the left arm to (−0.15, −0.35, 1.0) m, about 0.127 m away. A later right target of (0.3, −0.35, 0.95) m would be about 0.15 m away, and the left could perhaps move toward its initial pose. Alternatively, I could reset from clear intermediate positions without first reaching the initial end-effector poses. At right y = −0.20 m and z = 1.02 m, I estimate the vertical fingertips at z = 0.86 m, in front of the red rim near y = −0.04 m. At left y = −0.35 m, the fingertips would be around z = 0.85 m above the cleared table. The watches previously occupied positions near y = −0.2 m, and the left arm’s proposed x = −0.15 m is near the now-cleared toy area, so I judge that space unobstructed. For the immediate action, I will target left link6 at (−0.15, −0.35, 1.0) m and right link6 at (0.3, −0.22, 1.02) m, keeping both current vertical orientations and both grippers open. I estimate the distances at 0.127 m for the left and 0.216 m for the right, within the 0.25 m bound. The right target is on its own side, so the precheck will likely pass. The left move from x = −0.047 m to −0.15 m and y = −0.273 m to −0.35 m also appears clear. I will use 15 navigation steps, inspect the resulting clearance, and then plan to allow 50 reset steps.

The right arm moved only about −0.09 m along Y during the previous 15 control steps toward the target Y coordinate of −0.22 m. Could its reach be limiting the motion? It is still above the red basket’s front rim, though the gripper is vertical at link6 height z = 1.029 m, with the fingertip estimated at z = 0.87 m and clear of the rim. Resetting from here could sweep the gripper over the basket, so I should retract farther into open space first. I considered retracting to y = −0.25 m from the current y = −0.094 m, an estimated distance of 0.156 m, while keeping the same height and vertical orientation. The slow progress may reflect local reach constraints or controller behavior near elbow limits. Another 15 steps toward y = −0.28 m might move it about −0.09 m along Y, bringing it to approximately y = −0.184 m. Reaching around y = −0.22 m should provide enough clearance. Combining retraction with lowering may produce more progress. I will target the right link6 at (0.3, −0.30, 0.98) m, an estimated distance of 0.209 m, while retaining its vertical orientation and keeping the gripper open. The left arm is clear at (−0.15, −0.35, 1.0) m, so I will hold it there. The precheck may pass; I will use 15 control steps.

Both arms are now in clear space. I will reset them to their initial joint configurations, allowing 50 control steps.

The episode has ended with native_success true, so I will make no further tool calls and briefly report the supplied successful outcome. I will mention that the wooden toys are in the left basket, the watches in the middle basket, and the chocolate bars in the right basket. I should describe the robot reset as executed without claiming that the arms fully reached home, since reached_home is false. A concise response can state that the sorting and arm-return action were completed and report native_success true.