LeRobot SO-101
Price on request
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Photos and 3D model: TheRobotStudio / Hugging Face SO-ARM100, Apache-2.0. Model simplified and recoloured by GSF.
The SO-101 is the reference arm of LeRobot, Hugging Face's open-source robot learning library. It comes as a pair: you move the leader arm by hand and the follower copies it in real time.
Record 50 or so demonstrations of a task, like picking up a block and putting it in a box. Train a policy such as ACT on a single GPU, and the follower does the task by itself. Datasets and models can be shared on the Hugging Face Hub.
It is the cheapest serious way we know to teach robot learning. We can assemble and calibrate the pair for you, and run a hands-on workshop for your team or class.
- Made by
- TheRobotStudio × Hugging Face (open hardware)
- Category
- Robot arm kit
- For
- Universities & vocational colleges, AI engineers, Makers
- Price
- On requestIt depends on the servo option (5 V or 12 V follower) and cameras.
Features
What SO-101 does
- Leader–follower teleoperation
- Guide the leader arm by hand. The follower mirrors every joint.
- Train real policies
- ACT, Diffusion Policy, SmolVLA, Pi0 and more, all built into LeRobot.
- Same calibration everywhere
- A policy trained on one SO-101 runs on another, so a class can share models.
- Open hardware
- Printable parts, STEP CAD and a MuJoCo model are all public. Broken parts are cheap to replace.
3D model
Leader and follower, in 3D
Specifications
- Configuration
- 1 leader arm + 1 follower arm
- Joints per arm
- 6 (5-DoF arm + gripper)
- Servos
- 12 × Feetech STS3215, 12-bit magnetic encoders
- Follower gearing
- 1/345 on all joints
- Leader gearing
- Mixed 1/191, 1/345, 1/147 (light to move by hand)
- Controller
- 1 bus-servo board per arm, USB-C to PC
- Power
- 5 V supply per arm (12 V high-torque follower optional)
- Host
- PC running LeRobot (Python): Linux, macOS or Windows
- Cameras
- Any USB webcam; RealSense supported
- Licence
- Apache-2.0
In the box
| Item | Qty |
|---|---|
| Leader arm + follower arm | — |
| STS3215 servos (installed) | 12 |
| bus-servo controller boards | 2 |
| 2 × power supplies, 2 × USB-C cables | — |
| table clamps | 4 |
Use
Where it gets used
Use cases
- AI and robotics courses
- Imitation-learning research
- Hackathons and workshops
- Testing a manipulation task before buying a bigger robot
Upstream docs and source
- LeRobot SO-101 docshuggingface.co
- LeRobot on GitHubgithub.com
- SO-ARM100/101 hardwaregithub.com
From us
What we add to the hardware
- Assembly and calibration
- We can build, calibrate and test robot arms and mobile robots before they reach you.
- Classes and workshops
- We have taught robot basics to vocational students and run a primary-school robotics club. We can do the same for your school or team.
- Support in Thai
- Questions, spare parts and repairs, handled by the engineers who sold it to you.
- Custom software
- Need the robot to do something specific? We are a software house too.
Also from GSF
Other products
STEM robot kitsMakerzoidBuild a robot from bricks, then code it from a phone.From ฿2,400
Online robotics learning platformRoboParkLearn to program robots in an online simulator, no hardware needed.In development
Dual-arm mobile robotXLeRobotTwo SO-101 arms on a wheeled base, for household-task research.Price on request- Project management toolTakticA project management tool for teams.In development
Ask about SO-101 price and lead time
Tell us what you want to use it for and whether you want it assembled. We reply with a price and a delivery estimate.
- Office
- 52/9 Suchawadee Village, Moo 3, Soi Sukhaprachasan 3Tiwanon Road, Bang PhutPak Kret, Nonthaburi 11120Open in Google Maps
- Hours
- Mon–Fri, 9:00–18:00 (Bangkok time)