RoboParty has open-sourced the full RP1 humanoid stack. We’re talking about the actual engineering from hardware to control software.
Hardware
• 1.35 m tall, ~39 kg with battery and end effectors
• 24 DoF standard, 30 on Pro, with a 2-DoF neck and two 7-DoF arms
• Custom ROMOMO joint modules, rated at 160 Nm peak torque on the 100 mm model
• 10 Ah battery, with around 3 hours of operation
• Mechanical CAD, schematics, PCB layouts, Gerber files, BOM, wiring and assembly SOPs
Software
• Linux BSP, USB-CAN bridge and motor firmware
• URDF and MJCF models for MuJoCo and Isaac Lab
• RL locomotion training, AMP, BeyondMimic (RSL-RL), MimicLite and UFO
• C++ and Python deployment SDK covering IMU, motors, inference and camera
• Sim-to-sim validation before deployment on the real robot
• 500 Hz real-time control loop
Most repositories are available on GitHub under Roboparty.
Having the CAD, electronics and control stack in one place gives developers a lot to work with.
This might be the Chinese Microduck… but there’s a big difference between these two robots.
Meet NanoLoong Bipedal, a 60 cm tall open-source humanoid robot from China, inspired by Pixar’s famous lamp and Disney’s BDX robot.
It uses brushless motors and reinforcement learning to learn how to walk on two legs.
The project shares CAD files, 3D-printable parts, electronics documentation, control software and trained motion policies on GitHub.
Its hardware includes an Odroid C4 computer and an ESP32-S3 for control, with CAN bus communication for the motors.
The developers report a total cost below 15,000 Chinese yuan, roughly $2,000 depending on the exchange rate.
Now compare that with Microduck from French robotics company Pollen Robotics.
Microduck stands just 25 cm tall and weighs around 780 grams. It has 15 motors, a camera, LiDAR and two IMUs. Its software and reinforcement-learning training stack are open source, with a listed preorder price of $399 before taxes and shipping.
Both projects give developers access to robot hardware and software, but they target different sizes and budgets.
What caught my attention with NanoLoong is the combination of brushless motors, 3D-printed parts and learned walking policies in a compact biped.
Which one would you build: NanoLoong or Microduck?