Robotics
LeRobot
Safetensors
Piper
smolvla
vla

SmolVLA (full fine-tune): Piper hexagonal bolt insertion (80 zero-home demos)

Fine-tuned from lerobot/smolvla_base on Samisaliveagain/piper-hexagonal-bolt-insertion-80-demos-zero-home-v1 (AgileX Piper, 7-D absolute joint-position actions: 6 joints in degrees + gripper in mm).

Camera mapping: overhead -> observation.images.camera1, angled -> observation.images.camera2. Task prompt: "Pick up the hexagonal bolt and place it in the matching opening."

  • Full fine-tune (vision encoder + VLM + action expert), step 31826 / 31826
  • Batch 32 x 1 accumulation (effective 32), ~20 epochs
  • lr 0.0001, 1000 warmup steps, cosine decay; fp32 weights with bf16 autocast
  • chunk_size 50, n_action_steps 50
from lerobot.policies.smolvla import SmolVLAPolicy
policy = SmolVLAPolicy.from_pretrained("RoboticsCollectiveAachen/smolvla_piper_hex_bolt_insertion_80_full")
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