Pollen Robotics open-sources Microduck bipedal robot RL training stack

Pollen Robotics open-sourced microduckrl, the reinforcement learning training stack for its miniature bipedal robot Microduck, and demonstrated a complete sim2real loop: policies trained in simulation are exported as ONNX and deployed directly onto the physical robot, where the robot can also learn new tricks. Built on the MuJoCo Warp (mjlab) simulator and PPO, with the hardware available for purchase, the project is a rare open-source package combining a training environment, a full sim2real recipe, and purchasable hardware.

Confirmed

• The training environment is built on MuJoCo Warp (mjlab) with PPO, and the microduckrl library is fully open-sourced
• A complete sim2real loop was demonstrated: train in simulation, run in reality, and teach the robot new skills
• Policies are exported as ONNX and deployed to the physical robot
• The simulation explicitly models actuator behavior, battery voltage, friction, and even gear backlash to close the sim-to-real gap; the release also details techniques such as head tracking and backlash simulation
• The project includes training for multiple skills such as walking
• Microduck hardware is available for purchase

Why it matters

• It is a rare three-in-one open-source offering — training environment, full sim2real recipe, and purchasable hardware — lowering the barrier for researchers to reproduce and iterate RL policies on a real bipedal robot
• The explicit modeling of physical details like actuators, battery voltage, friction, and gear backlash provides a referenceable engineering template for sim2real practice

2026-08-28 ~ 2026-08-29 · 5 related posts

Full story(2 episodes)→

• Episode 1: Pollen Robotics open-sources Microduck bipedal robot RL training stack(2026-08-28, 5 posts)
• Episode 2: Microduck Robot Masters Handstand, Eyes Head-Spin Next(2026-08-29, 3 posts)

• [source] Microduck Open Sources Full RL Stack for Sim2Real Bipedal Robot — carlosdponx · 2026-08-28
• Microduck RL Training Library Open Source: Head Tracking and Backlash Simulation Tricks — Thom_Wolf · 2026-08-28
• Microduck Robot Open Sources RL Stack for Sim2real Training Loop — victormustar · 2026-08-28
• [source] Microduck Reveals Full Robot RL Pipeline — markjeffrey · 2026-08-29

1 near-duplicate retellings: GordonWetzstein