SO-ARM101 from WowRobo Robotics is a versatile, open-source humanoid robotic arm developed in collaboration with the LeRobot / Hugging Face community. It offers two flexible options — a DIY Kit for hands-on builders and a Fully Assembled Version for users who prefer a ready-to-use robotic arm. Whether you are a beginner exploring Robotics or an advanced developer building embodied AI applications, the SO-ARM101 provides a powerful, customizable platform for learning, research, and DIY innovation.
Features
- Open-Source Robotics Platform — Built on the LeRobot / Hugging Face project, enabling customization, community support, and rapid iteration.
- Two Flexible Options:
- DIY Kit — Includes high-quality printed parts and 12 servos for complete self-assembly.
- Assembled Version — Pre-built, calibrated, and ready for immediate deployment.
- Hands-On Learning Experience — Perfect for STEM education, robotics courses, and makers who enjoy hardware engineering.
- High-Torque Servo System — Powered by Feetech STS3215 series servos, offering robust torque and precise motion control.
- Camera-Ready Design — The assembled version includes a vision camera module for perception, AI vision, and teleoperation tasks.
- Community-Driven Development — Supported by an active WowRobo Robotics and LeRobot community for troubleshooting and upgrades.
Specification
| Category | Details |
|---|---|
| Product Type | Open‑source robotic arm kit (DIY Kit & Assembled Version) |
| Developer | WowRobo Robotics, based on Hugging Face’s LeRobot project |
| Versions | - DIY Kit : Includes all components, user assembles manually, ideal for learning and makers - Assembled Version : Factory pre‑assembled and calibrated, ready to use |
| Servo Configuration | 12 × Feetech ST3215 servos |
| Structural Parts | High‑quality PLA+ printed components |
| Adapters | Waveshare Servo Adapter (included in higher packages) |
| Power Supply | 12V8A & 5V6A adapters (included in higher packages) |
| Clamps | C‑shaped fixed clamps (included in higher packages) |
| Cables | 1.5m Dual Type‑C data cables (included in higher packages) |
| Camera | 2MP vision camera (included in higher packages) |
| Assembly & Calibration Service | DIY Kit: not included Assembled Version: included |
| Dimensions | 33 cm × 33 cm × 12 cm |
| Weight | ~2.4 kg |
Applications & Use Cases
STEM & Robotics Education
Perfect for classrooms and university labs, the SO-ARM101 enables students to master robotics fundamentals, kinematics, and control theory through a real-world humanoid robotic interface.
Embodied-AI Research & Development
With its open-source software stack, the SO-ARM101 is an ideal testbed for reinforcement learning, imitation learning, and advanced machine learning workflows in physical environments.
Human–Robot Interaction (HRI)
The dual-option design is perfectly suited for testing gesture recognition, teleoperation, and natural collaborative tasks between humans and robotic systems.
Prototyping & Algorithm Testing
Researchers can rapidly prototype motion-planning algorithms and perception-based tasks, leveraging the arm's high-torque servos and open control interface.
AI Vision & Perception Tasks
The integrated camera module enables advanced computer vision applications, including object detection, tracking, and 3D pose estimation.
Teleoperation & Remote Manipulation
The smooth servo control and real-time camera feedback allow the SO-ARM101 to excel in remote teaching and telepresence robotics scenarios.
Packing list
| Item | Black Printed Parts and 12 Servo | Unassembled Black Kit for the SO-101 Arms(1 Leader + 1 Follower +1 camera |
|---|---|---|
| Feetech ST3215 Servo | 12 pcs | 12 pcs |
| C001 (7.4V, 1/345, 1 pcs) | — | — |
| C044 (7.4V, 1/191, 2 pcs) | — | — |
| C046 (7.4V, 1/147, 3 pcs) | — | — |
| C018 (12V, 1/345, 6 pcs) | — | — |
| High-quality PLA+ Printed Parts | Included | Included |
| Waveshare Servo Adapter | Not included | 2 units |
| Two Power Adapters (12V8A & 5V6A) | Not included | 1 set |
| C-shaped Fixed Clamp | Not included | 4 units |
| 1.5m Dual-Type-C Data Cables | Not included | 2 cables |
| 2M Pixels Hands-On Camera | Not included | 1 unit |
| Finished Assembly and Calibrated Service | Not included | Not included |