Community-built robots you can build, run, and own
Arm RobotsSO-101 Teleop Arm
SO-101 is the current-generation open-source 6-DOF teleoperated robotic arm from The Robot Studio, designed in collaboration with Hugging Face's LeRobot project. It is the successor to the SO-100 and is one of the most widely built low-cost research arms in the world, used by hundreds of researchers and hobbyists as a platform for imitation learning, robot learning datasets, and end-to-end AI for manipulation. The design is a leader/follower pair: the human operator back-drives the leader arm by hand, and the follower mirrors the motion to manipulate objects. Both arms share the same 6-DOF serial kinematic structure (base rotation, shoulder, elbow, wrist pitch, wrist roll, gripper) with one STS3215 smart servo per joint. The total bill of materials is under $120 per arm including the parallel-jaw gripper, making it dramatically more accessible than conventional research arms. SO-101 improves on SO-100 with cleaner wiring channels, easier assembly (no gear disassembly required for installation), and updated motors on the leader arm for improved back-driveability. The design is fully parametric with print-orientation guides provided for both Ender and Prusa workflows. All CAD, STLs, firmware, and assembly instructions are Apache 2.0 licensed. The arm plugs directly into the Hugging Face LeRobot library for data collection, policy training (ACT, diffusion policy, VQ-BeT), and rollout — you can record teleop demonstrations, train a neural policy, and run autonomous manipulation on the same hardware. This program exposes cloud-side endpoints for homing, gripper control, recorded trajectory replay, and a mirror-leader hook for live teleop relay. Credit to The Robot Studio (therobotstudio.com) and the Hugging Face LeRobot team — upstream repository at https://github.com/TheRobotStudio/SO-ARM100 under Apache 2.0. Assembly guide at https://huggingface.co/docs/lerobot/so101. Build Guide Official SO-101 / SO-ARM100 assembly guide (covers both leader and follower): huggingface.co/docs/lerobot/so101
from $318🛠 BoM
Arm RobotsPAROL6 Desktop Robot Arm
PAROL6 Desktop Robot Arm A high-performance 6-DOF desktop robotic arm designed to mirror industrial robots in mechanical design, control software, and usability — but small enough to sit on your desk. Designed by Petar Crnjak (Source Robotics). Released under GPLv3. STL files, control software, and GUI are all open-source. What you can do Run kinematic demos from your browser Practice pick-and-place with the included gripper attachments Learn industrial-style arm control (home, jog, teach points) Extend with your own gripper tooling (pneumatic, vacuum, 2-finger) Specs | | | |---|---| | Degrees of Freedom | 6 + gripper | | Joints | J1 base, J2 shoulder, J3 elbow, J4/J5 forearm, J6 wrist | | Payload | ~500g (typical) | | Reach | ~400mm | | Controller | Custom PAROL6 control board (STM32-based, PlatformIO) | | Motors | NEMA 17 stepper motors on joints | | License | GPLv3 (software + STLs) | Build options Two paths: 1. Buy a kit from Source Robotics — fully supported, pre-sourced parts 2. Source & print yourself — follow the BOM and Building instructions STL files This program includes a representative subset of 12 STLs covering BASE, SHOULDER, ELBOW, FOREARM, GRIPPER, and ESTOP groups. For the full 41-part canonical set (plus mounting plates and extras), see the STL directory on GitHub. Resources 📖 Official Docs 🎥 YouTube demo 🐍 Python API 🎛 Commander software 🤖 ROS2 / MoveIt simulation 💬 Discord community ⚠️ Safety PAROL6 involves lethal voltages and moving mechanical parts. Read the full SAFETY WARNING AND DISCLAIMER before assembling or operating. Attribution Source: PCrnjak/PAROL6-Desktop-robot-arm · License: GPLv3 · © Petar Crnjak / Source Robotics
from $480🛠 BoM
Arm RobotsSO-ARM101 Standard Open Arm
SO-ARM101 — Standard Open Arm A 6-DOF open-source teleoperation arm system designed by The Robot Studio in collaboration with Hugging Face. SO-101 is the next-gen version of the SO-100 with improved wiring, easier assembly, and updated motors. Built to work seamlessly with the 🤗 LeRobot library for end-to-end AI robotics research. What makes it interesting Leader + Follower teleoperation pair — move the leader arm, the follower mimics in real time LeRobot-native — record demonstrations, train imitation-learning policies, deploy to the arm Low cost — ~$100 per arm in printed parts + motors Active community — dozens of vendors selling kits worldwide Specs | | | |---|---| | Degrees of Freedom | 6 per arm (leader + follower = 12 total) | | Motors | Feetech STS3215 servos | | Reach | ~420mm | | License | Apache 2.0 (code + hardware) | | Ecosystem | Hugging Face LeRobot | Build options Two paths: 1. Buy a kit — dozens of vendors listed in the README (PartaBot US, Seeed Studio, WowRobo, etc.) 2. Source & print yourself — follow the 3DPRINT.md guide and the Hugging Face Assembly Guide STL files This program includes 12 representative SO-101 individual parts (base, motor holders, arm links, wrist roll/pitch, gripper jaw, handle). For the full SO-101 printable set plus the SO-100 legacy parts, Optional accessories (cam mounts, bases, grippers), and Mini variant, browse the STL directory on GitHub. Resources 📖 SO-101 Assembly Guide (HuggingFace) 🤗 LeRobot library 💬 Discord community 🖨 Printing guide (3DPRINT.md) 🏭 The Robot Studio Attribution Source: TheRobotStudio/SO-ARM100 · License: Apache 2.0 · © The Robot Studio / Hugging Face contributors Build Guide Official SO-101 / SO-ARM100 assembly guide: huggingface.co/docs/lerobot/so101
from $220🛠 BoMBrowse by type