Piper_open_pan_0421 / README.md
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Piper LeRobot Dataset

Generated on 2026-04-25 by convert_piper_hdf5_to_lerobot.py.

Summary

  • Repo id: ZhaoRunyi/Piper_open_pan_0421
  • Robot type: aloha
  • Input dir: /home/edemlab/challenge_ws/control_your_robot/example/teleop/save/dual_piper_data/open_pan
  • Output dir: /home/edemlab/challenge_ws/data/ZhaoRunyi/Piper_open_pan_0421
  • FPS: 10
  • Sampling mode: full
  • Leading group: slave_cam_high
  • Crop strategy: LATEST_START
  • Default leading tolerance: 0.1 s
  • Additional constraints: []
  • Arm selection: dual -> left, right
  • Space ids: all -> ['joint', 'gripper', 'ee_pos', 'ee_rot']
  • EE rotation format: rot6d
  • Gripper format: raw
  • Image preset: all -> ['observation.images.cam_high', 'observation.images.cam_left_wrist', 'observation.images.cam_right_wrist']

State / Action Index Map

action uses the exact same index order as observation.state.

indices arm component names source
0-5 left joint left_joint_waist, left_joint_shoulder, left_joint_elbow, left_joint_forearm_roll, left_joint_wrist_angle, left_joint_wrist_rotate slave_left_arm/joint
6 left gripper left_gripper slave_left_arm/gripper
7-9 left ee_pos left_ee_pos_x, left_ee_pos_y, left_ee_pos_z slave_left_arm/ee_pose[:3]
10-15 left ee_rot left_ee_rot6d_0, left_ee_rot6d_1, left_ee_rot6d_2, left_ee_rot6d_3, left_ee_rot6d_4, left_ee_rot6d_5 slave_left_arm/ee_pose[3:6] (controller-scaled Piper xyz Euler) -> rot6d
16-21 right joint right_joint_waist, right_joint_shoulder, right_joint_elbow, right_joint_forearm_roll, right_joint_wrist_angle, right_joint_wrist_rotate slave_right_arm/joint
22 right gripper right_gripper slave_right_arm/gripper
23-25 right ee_pos right_ee_pos_x, right_ee_pos_y, right_ee_pos_z slave_right_arm/ee_pose[:3]
26-31 right ee_rot right_ee_rot6d_0, right_ee_rot6d_1, right_ee_rot6d_2, right_ee_rot6d_3, right_ee_rot6d_4, right_ee_rot6d_5 slave_right_arm/ee_pose[3:6] (controller-scaled Piper xyz Euler) -> rot6d

Notes

  • Timestamp alignment is done per HDF5 group. Each camera group and each arm group has its own timestamp dataset, which is treated like an individual topic timeline.
  • The leading group is slave_cam_high. In full mode every leading-group timestep is kept; in fps mode the leading timeline is resampled first and then all other groups are bound to it by nearest timestamp.
  • Piper HDF5 stores 6 arm joints plus one separate gripper scalar per arm. When both joint and gripper are enabled, the gripper is appended as the 7th dimension of that arm's joint block.
  • ee_pose rotation is decoded from the current PiperController convention: controller value -> multiply by 1000 -> Piper xyz Euler degrees -> convert to rot6d. When EE_ROT_FORMAT is rpy/euler, the exported values are radians.
  • GRIPPER_FORMAT="01" treats values in [0, 1] as normalized opening ratio and thresholds them with GRIPPER_FULL_WIDTH=0.05 and GRIPPER_THRESHOLD=0.01.

Image Keys

dataset key hdf5 group
observation.images.cam_high slave_cam_high
observation.images.cam_left_wrist slave_cam_left
observation.images.cam_right_wrist slave_cam_right

Feature Names

observation.state / action names:

left_joint_waist, left_joint_shoulder, left_joint_elbow, left_joint_forearm_roll, left_joint_wrist_angle, left_joint_wrist_rotate, left_gripper, left_ee_pos_x, left_ee_pos_y, left_ee_pos_z, left_ee_rot6d_0, left_ee_rot6d_1, left_ee_rot6d_2, left_ee_rot6d_3, left_ee_rot6d_4, left_ee_rot6d_5, right_joint_waist, right_joint_shoulder, right_joint_elbow, right_joint_forearm_roll, right_joint_wrist_angle, right_joint_wrist_rotate, right_gripper, right_ee_pos_x, right_ee_pos_y, right_ee_pos_z, right_ee_rot6d_0, right_ee_rot6d_1, right_ee_rot6d_2, right_ee_rot6d_3, right_ee_rot6d_4, right_ee_rot6d_5