Issue: Action Trajectory Mismatch - Calibration File Request

#3
by zysc - opened

Problem

I'm running inference with the Pi05 model on my SO101 robotic arm. The model successfully generates and executes actions, but the robot's motion trajectory deviates significantly from the expected behavior and fails to complete the task.

Root Cause Analysis

I suspect there's a calibration range mismatch between my robot setup and the one used to collect your dataset. Since SO101 calibration determines joint ranges (min/max) through manual movement, different calibrations result in different mappings of normalized actions to physical positions.

Request

Could you please share your calibration file (.json or .yaml) that includes the homing_offset, drive_mode, range_min, and range_max values for each motor? This would allow me to align my robot's calibration with your setup.

Example format:

{
  "shoulder_pan": {"homing_offset": 0, "drive_mode": 0, "range_min": 927, "range_max": 3093},
  "shoulder_lift": {"homing_offset": 0, "drive_mode": 0, "range_min": 2044, "range_max": 4096},
  ...
}

Thank you for your help!

@youliangtan could you please share the calibration file(s) used for this dataset? Would help a lot for correctly de-normalizing the action/state values.

We have been digging into episodes_stats.jsonl to figure out the MotorNormMode, and the evidence points to RANGE_M100_100 (not DEGREES) for the 5 arm joints, with gripper on RANGE_0_100. Is that correct?

Thank you for your reply.

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