Tech Blog

Notes from the lab, written down while they're fresh.

Training VLAs on real robots, collecting and curating data, evaluating policies — and the pitfalls in between. English first; Japanese editions follow.

Six camera frames from the recording cell: overhead, side and wrist views at two moments of a nut pick-and-place episode
Research2026 · 08 · 19

Training pi0.5 on OpenArm: from teleop data to a 100% pick-and-place policy

Fine-tuning Physical Intelligence's 3.6B VLA on an open-source bimanual arm with LeRobot: the cell, the recipe, real-time chunking inference, robustness under sensor loss, and three bugs that never raised an error.

pi0.5OpenArmLeRobotVLA