Overview
SO-ARM100 Low-Cost AI Arm 3D Printed Skeleton parts set for building and experimenting with the LeRobot framework. These PLA+ components provide the structural skeleton for the SO-ARM100 robotic arm and come with open-source resources to support learning, assembly, calibration, testing, data collection, training, and deployment. Parts are finetuned for easier installation and fitting with the Servo Adaptor Board for Seeed Studio XIAO; some parts may differ slightly from the official GitHub files, and noticeable friction during installation can be normal.
Key Features
- Open-source and low-cost: Based on TheRobotStudio’s SO-ARM100 open-source design.
- Integration with LeRobot: Works with the LeRobot platform, which provides PyTorch models, datasets, and tools for reinforcement learning and imitation learning in real-world robotics (data collection, simulation, training, deployment).
- Abundant learning resources: Assembly and calibration guides, plus tutorials for testing, data collection, training, and deployment to help users get started quickly.
- Compatible with NVIDIA: Deploy with reComputer J4012 Orin NX 16 GB.
- Arm architecture: The SO-ARM100 design showcases 6 Degrees of Freedom and open-source hardware.
Specifications
| Leader | Follower | Clamps | |
| Parts | 13 pcs | 12 pcs | 12 pcs |
| Color | Black | White | Grey |
| Material | PLA+ | PLA+ | PLA+ |
| Infill Density | 13% | 13% | 13% |
What’s Included
- Leader Parts: 13 pcs
- Follower Parts: 12 pcs
- Clamps Parts: 12 pcs
Applications
Imitation learning and Reinforcement learning
The LeRobot framework is compatible with the SO-ARM10X robotic arm. It provides complete data collection, training, and deployment for teaching the robotic arm, and also offers a comprehensive simulation platform. On the Nvidia Jetson edge device, it is straightforward to train a customized robotic arm to complete grasping and placing tasks. Tutorials: LeRobot - NVIDIA Jetson AI Lab
Documents
- STS3215 Servo Motor Datasheet
- Finedtune 3D printed parts files
- Original SO-ARM100 3D printed parts
- Servo Adaptor Board for Seeed Studio XIAO Datasheet(Purchase after March 03 2025)
- Serial Bus Servo Drive Board DataSheet(Purchase before March 03 2025)
- reComputer J301x Datasheet
- reComputer J401X Datasheet
ECCN/HTS
| HSCODE | 3926909090 |
| USHSCODE | 3926909989 |
| UPC | |
| EUHSCODE | 3926909705 |
| COO | CHINA |
Part List
| Leader Parts | 13 pcs |
| Follower Parts | 12 pcs |
| Clamps Parts | 12 pcs |
Details

LeRobot AI Arm Kit SO-ARM100 offers 6 DOF, 19kg·cm servo, open-source hardware, works with reComputer J4012 Orin NX 16GB. Enables imitation learning, data collection, simulation, training, and provides extensive community resources.

3D printed SO-ARM100 robot arm integrated with reComputer J40 and NVIDIA Jetson Orin NX. Monitor displays real-time CPU/GPU usage, sensor data, and performance metrics. Arms connected and operational via control interface.
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