Arm robots

Open-source robot arms are the workhorses of the LeRobot ecosystem in 2026 — from the SO-101 low-cost teleop arm to the Koch v1.1 leader-follower rig and the XLeRobot dual-arm mobile platform. Every arm on this page ships with a full bill of materials, 3D-print files, and a browser-based control program you can run from orobot.io — no local Python stack, no port forwarding, no ngrok required. The Raspberry Pi connects to the orobot cloud gateway over WebSocket; you open a browser anywhere and drive the arm in real time. Whether you're building a lerobot compatible arm for imitation learning, a 3D printed robot arm for pick-and-place experiments, or a low-cost open source robot arm BOM for education, the designs here cover 5-DOF and 6-DOF configurations across a range of build costs. Each entry links directly to its BOM so you can price the project before printing a single part.

14 community-built arm robots on orobot.io.

• Poppy Ergo Jr — Poppy Ergo Jr is a 6-DOF desktop robot arm from the Poppy Project — an open-source robotics platform developed at Inria's Flowers team for education, research,
• EvoArm — 159 stars on GitHub. EvoArm is an open-source 3D-printable desktop robotic arm by Ali Shug, based in part on Armatec's LiteArm i2 (Thingiverse 480446). 3+2 DOF
• PingTi Arm — PingTi Arm is an open-source, human-scale robotic arm built for affordability and compatibility with the SO-ARM100 ecosystem. Its name comes from the Chinese "平
• NormaCore ElRobot — ElRobot is a fully 3D-printable 7+1 DOF robotic arm designed by the NormaCore team for affordable physical-AI research and imitation learning experiments. With
• SaturnArm — ## SaturnArm — A Simple 5-DOF Robotic Arm A budget-friendly 3D-printed robotic arm with inverse kinematics, controlled by a Raspberry Pi Zero 2 W. Originally b
• Lattice Arm — **Lattice Arm** is an open-source, low-cost, **modular and detachable** robotic manipulator designed for tool use. It is built on top of the [SO-101](https://gi
• PAROL6 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 usabil
• SO-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
• Differential Robot Wrist — # Differential Robot Wrist A 2-DOF differential bevel-gear wrist mechanism from **Source Robotics**, open-sourced as a test fixture for their future humanoid/a
• Koch v1.1 Teleop Arm — Koch v1.1 is a low-cost, open-source 6-DOF 3D-printed robot arm pair engineered for imitation-learning research. A lightweight **leader arm** acts as the human
• Pedro Robot Arm — Pedro is a fully open-source, 3D-printable educational robot arm designed for STEM classrooms and makers who want to learn robotics from scratch. With only four
• Qubit — Dual-Arm Desktop Robot — Qubit is a fully functional dual-arm desktop robot designed for demos, livestreams, and content creation. It features two SO-100 arms driven by 12× STS3215 serv
• PAROL6 Desktop Arm — 2,794 stars on GitHub. The PAROL6 is a high-performance 6-DOF desktop robotic arm designed by Petar Crnjak (Source Robotics) under GPLv3. Its mechanical and co
• Assembler 0 — # Assembler 0 – A 3-D-printable test-bed for partial self-replication Created by [jackvial](https://github.com/jackvial) • Released under **MIT License**

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