π0.5 Piper Toothbrush-Into-Cup LoRA
OpenPI/JAX π0.5 LoRA checkpoint trained for 10,000 steps on
toothbrush_in_cup_32_dual14d_pi05_rgb224_v21 (32 episodes, 31,484 frames).
The exact language prompt is:
put the toothbrush into the cup
Runtime contract
- RGB inputs: top, left wrist, and right wrist, letterboxed to 224×224.
- State/action: 14-D
[L_j1..j6, L_gripper_m, R_j1..j6, R_gripper_m]; the 12 joint targets are trained as state-relative deltas and both grippers remain absolute.
- Recorded action supervision contains absolute joint-angle targets in radians.
- Grippers are meters and are clipped to
[0, 0.08] at the policy boundary.
- Action horizon: 30.
- OpenPI config:
pi05_piper_toothbrush_cup_lora.
Normalization statistics under assets/ and the bundled OpenPI overlay are
required. The validation report checks checkpoint loading and inference pipeline
integrity; it is not a real-robot success-rate evaluation.
