Open Source KitOpen Source / DIY Global (Open Source)
Hugging Face LeRobot SO-ARM100
By Hugging Face & Open Source Community
The viral open-source 6-DoF robotic arm for training Vision-Language-Action AI models.
Manufacturer MSRP / Status$400 (DIY Kit)
Neural Brain: Direct USB-C Link to Local PC / Jetson Orin Nano with PyTorch
VERIFIED HARDWARE6 DOF / 1.8KG
Degrees of Freedom6 DoF
Benchmark capacity: 15% of 40-DoF max
Arm Payload0.5 kg
Lifting power: 2% of 25kg standard
Battery LifeAC Power
Active shift: 100% continuous duty
Max Velocity0 km/h
Sprint mobility: 0% of 18km/h tier
Full Technical Specifications
Actuators & DriveFeetech STS3215 / SCS0009 Serial Bus Servos
Perception & SensorsDual USB Webcams (Wrist + Overhead) for visual observations
Onboard AI & ComputeDirect USB-C Link to Local PC / Jetson Orin Nano with PyTorch
Foundation ModelLeRobot PyTorch Ecosystem (ACT, Diffusion Policy, OpenVLA)
Maximum Speed0 km/h
ConnectivityUSB 2.0 / USB-C to Host PC
Engineering Highlights
- 100% open-source 3D CAD files, electronics BOM, and training code on GitHub
- Costs less than $400 to build using standard Feetech bus servos
- Leader-Follower teleoperation setup for collecting demonstration datasets in minutes
- Native Hugging Face Hub integration to share and download robot weights
- Compatible with ACT (Action Chunking with Transformers) and Diffusion Policy
Editorial Review & Market Position
Created by Hugging Face, LeRobot is the 'Linux moment' for robotics. The SO-ARM100 is a fully 3D-printable 6-degree-of-freedom robotic arm that costs under $400 in off-the-shelf parts (Feetech servos, 3D filament, cameras). Anyone can train imitation learning policies on a home laptop.
