Robonine Labs · Desktop robotic arm

SO-ARM101 — a real robotic arm on your desk

Five degrees of freedom, a gripper and drop-in compatibility with LeRobot. A leader–follower pair for teleoperation, recording demonstrations and everything you want to try next.

$349 Worldwide delivery in up to 3 weeks

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5 degrees of freedom + gripper
Leader–follower pair
LeRobot · ROS2 · MoveIt2
Ships unassembled

See it move

Teleoperation, in one take

You move the leader arm and the follower repeats it. That is the difference from a construction set: the motion can be recorded and replayed, and the recordings are the dataset you train a model on later.

Specification

What you are actually buying

Degrees of freedom	5 + gripper
Servos	12 Feetech STS3215 / ST3215 serial-bus servos — six per arm: J1–J5 for the joints, J6 for the gripper
Materials	Mechanical parts printed in black PLA+
Gripper	Single-Jaw Rotating Gripper, driven by the J6 servo
Configuration	Leader–follower pair
Camera	Camera module on the end-effector, included
Connection	USB to your computer
Power	Power adapters included
Openness	Open BOM, firmware and 3D models
Software	LeRobot (Hugging Face) drop-in · Python 3 · ROS2 Jazzy · MoveIt2
Mounting	Four C-clamps, included — the arms clamp to the edge of a desk
Calibration	Required once, after assembly

Full description of the kit

The hardware

In the box, and what you add

In the box

Leader arm and follower arm in black PLA+, unassembled
12 Feetech STS3215 / ST3215 servos
Camera module
Two servo control adapter boards
Two 1.5 m USB-C data cables and the power adapters
Four C-clamps, fasteners and wiring

You add yourself

A computer with a USB port — Windows, macOS or Linux. No GPU needed
A screwdriver set; assembly takes an evening
A desk with room for two arms side by side

The course is optional and sold separately — the arm works on its own with LeRobot and ROS2.

FAQ

Before you buy

Does it work with LeRobot without modification?

Yes. SO-ARM101 is part of the open SO-100/SO-101 ecosystem and works with the Hugging Face LeRobot workflows as they are — teleoperation, recording demonstrations, training and running policies.

How hard is the assembly?

An evening with a screwdriver. The arms ship unassembled with an assembly guide; no soldering and no machining are involved.

What if a servo fails?

The servos are standard Feetech STS3215 units on a serial bus, so a single one can be replaced without touching the rest of the arm. Write to us and we will help you work out which one it is.

How do delivery and returns work?

The kit ships worldwide from our supplier in China; delivery takes up to 3 weeks. Shipping is calculated at checkout from your country and shown before you pay. Buyers in the EU and the UK also pay import VAT and a customs handling fee on delivery. An unopened kit can be returned within 14 days of receipt for a full refund. Course access is refundable until you open the first module.

How can I pay?

International bank cards — Visa, Mastercard and more. Payment happens on a secure payment page.

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