SO-ARM101 Open Source 6-Axis Robotic Arm Developer Kit
Product Overview

Key Advantages
-
Fully Open-Source & Customizable Design
Compared to the SO-ARM100, the SO-ARM101 features improved wiring that eliminates the wire breakage issue previously occurring at Joint 3. The new wiring design also no longer restricts the joint's range of motion.
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LeRobot Integration
Purpose-built for integration with the LeRobot platform, which provides PyTorch models, datasets, and tools for real-world robotics applications — including data collection, simulation, training, and deployment — for reinforcement learning and imitation learning.
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Rich Learning Resources
Comprehensive open-source learning resources are provided, including assembly and calibration guides, as well as tutorials for testing, data collection, training, and deployment, helping users get started quickly and develop robotics applications.
Hardware Overview


Technical Specifications
|
Product Model |
SO-ARM101 Development Kit |
|
Leader Arm |
1× (7.4V) 1:345 reduction ratio motor for Joint 2 2× (7.4V) 1:191 reduction ratio motors for Joints 1 and 3 3× (7.4V) 1:147 reduction ratio motors for Joints 4, 5, and Gripper 6 |
|
Follower Arm |
6× (12V) 1:345 reduction ratio motors for all joints |
|
Power Supply |
DC5521 5V 6A (Leader Arm) DC5521 12V 5A (Follower Arm) |
|
Angle Sensor |
12-bit Magnetic Encoder |
|
Recommended Operating Temperature |
0°C ~ 40°C |
|
Servo Communication Protocol |
UART |
|
Arm Control Method |
PC |

Technical Support
For detailed technical documentation on software setup and code implementation, please refer to our official wiki: Click here to visit. Community technical support is also available to help accelerate your project implementation.
For SO-ARM10x hardware, please refer to: TheRobotStudio for the latest updates.
For official software and tutorials, please follow: huggingface/lerobot.
Documentation
Parts List
|
(7.4V) 1:345 Reduction Ratio Motor |
1 |
|
(7.4V) 1:191 Reduction Ratio Motor |
2 |
|
(7.4V) 1:147 Reduction Ratio Motor |
3 |
|
(12V) 1:345 Reduction Ratio Motor |
6 |
|
DC5521 5V 6A (Leader Arm) Power Cable |
1 |
|
DC5521 12V 5A (Follower Arm) Power Cable |
1 |
|
Servo Driver Board |
2 |
|
USB-C Cable |
2 |
|
Clamp |
4 |
|
Screwdriver |
1 |
|
USB Hub |
1 |
Specifications
Frequently Asked Questions
What is the SO-ARM101 Open Source 6-Axis Robotic Arm Developer Kit?
Where can I find technical documentation and open-source files for the SO-ARM101 Open Source 6-Axis Robotic Arm Developer Kit?
What platforms and frameworks is the SO-ARM101 Open Source 6-Axis Robotic Arm Developer Kit compatible with?
How can I get technical support for the SO-ARM101 Open Source 6-Axis Robotic Arm Developer Kit?
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Read technical documentation, schematics, and research papers on feishu.cn/wiki/RhA6wg91hiFZykkcDGoc8wMCnch











