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moffkalasttoday at 8:20 AM1 replyview on HN

One would expect it to at least have calibration and inverse kinematics solved. That's still a massive pain point for the SO-ARM101 despite it being so common now, since there's no base_link to gripper calibration nor sag compensation and every center offset stacks.

Lerobot banked on having full DL control of each joint so they wouldn't have to do that properly, but now VLAs just use inverse kinematics as a crutch and predict gripper offsets, so we're back to square one.


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drapadotoday at 8:46 AM

Hi! do you have any references for VLAs using inverse kinematics? I'm very curious and can't find much

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