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Real robots built in FloMotion. Open one to see how it works, or fork it and make it yours.

SO-101: low-cost open-source robot arm for LeRobot

@therobotstudio

A 3D-printed 6-DOF follower arm on six Feetech STS3215 serial bus servos, teleoperated by a matching leader arm to collect data and train AI policies with Hugging Face LeRobot.

star0fork_right0visibility2actuator: servo base: fixed

Koch low-cost robot arm: 6-servo follower

@alexanderkoch-koch

Alexander Koch's open-source 3D-printed robot arm for robot learning: two Dynamixel XL430s and four XL330s, about $250 for the follower, teleoperated by a matching leader arm.

star0fork_right0visibility2actuator: servo base: fixed

Latest articles.

Oct 30, 2026

Leader-follower teleoperation

In leader-follower teleoperation a person moves one arm, the leader, and a second arm, the follower, copies the motion. This article goes through how that setup works from nuclear hot cells to low-cost GELLO rigs, and walks through building and checking one in a FloMotion scene.

Oct 29, 2026

Forward and inverse robot kinematics

Motors turn in angles, while tasks are stated as positions and orientations in space. Kinematics is the geometry that links the two. This article goes through forward kinematics, the three families of inverse kinematics, and where each one appears in FloMotion.

Oct 25, 2026

A trained policy on a microcontroller

A walking policy trained in simulation usually runs on a computer next to the robot. A small one fits on the microcontroller that drives the servos. This article follows such a policy onto an ESP32: the Arduino sketch, the FloMotion inference library, the model file in flash, and the same firmware running as the robot's controller in a FloMotion scene before any board is flashed.