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Open-source robots with their licenses, parts and source files. Every page is pinned to a commit on GitHub.

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Ready to build: a score of 80 or more, a license and a finished design.

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Where the project was published, known for 29 of 270 robots. Never guessed.

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Guides machine-translated into English by Robotheca, with a link to the original on each robot page.

37 of 270 robots state a cost. Costs in other currencies are compared using the ECB reference rate of 14 Oct 2026. Robots without a known cost are hidden unless you include them.

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13 robots of 270

Page 1 of 1 · Ready to build first, then by buildability

  • SO-101

    A low-cost 3D-printed robot arm built as a leader and follower pair, for teleoperation and for teaching tasks by demonstration with LeRobot.

    Robot armBeginnerBuildability 98/100 · Ready to build
    • Works with AI
    €226.30

  • PingTi Arm

    A low-cost, human-arm-scale open-source robotic arm compatible with Lerobot, based on the SO-100 arm, with a 600mm span and up to 500g payload.

    Robot armIntermediateBuildability 85/100 · Ready to build
    • Works with AI
    €218.28

  • reBot DevArm B601-DM

    A 6-axis desktop robot arm with a gripper, made of CNC aluminium and 3D-printed parts and driven by CAN bus motors, for robot learning and research.

    Robot armAdvancedBuildability 85/100 · Ready to build
    • Works with AI
    Cost not stated

  • SO-ARM 102

    An open-source leader and follower robot arm kit with 5 degrees of freedom plus a gripper, for teleoperation and imitation learning.

    Robot armIntermediateBuildability 80/100 · Ready to build
    • Works with AI
    $414.21≈ €370 (ECB rate, 14 Oct 2026)

  • PAR6 Collaborative Robot Arm

    A 3D-printed collaborative robot arm for research, education and rapid prototyping in physical AI.

    Robot armAdvancedBuildability 78/100 · Buildable with some effort
    • Works with AI
    Cost not stated

  • U-Arm

    A low-cost, universal leader-follower teleoperation system for commercial robot arms with plug-and-play hardware configurations.

    Robot armIntermediateBuildability 75/100 · Buildable with some effort
    • Works with AI
    $60≈ €54 (ECB rate, 14 Oct 2026)

  • Koch v1.1

    An improved version of Alexander Koch's low-cost robot arm, a leader and follower pair with Dynamixel servos for LeRobot. The price includes both arms.

    Robot armBeginnerBuildability 73/100 · Buildable with some effort
    • Works with AI
    €673

  • Dual Scorpion

    A 7-DOF dual-arm bimanual robot platform derived from the SO-101 design, with matching leader arms for teleoperation.

    Robot armAdvancedBuildability 65/100 · Buildable with some effort
    • Works with AI
    $486.88≈ €435 (ECB rate, 14 Oct 2026)

  • 6-DOF Robotic Arm

    An open-source 6-degree-of-freedom robotic arm designed for simulation, kinematics research, and reinforcement learning-based end-effector control.

    Robot armIntermediateBuildability 60/100 · Buildable with some effort
    • Work in progress
    • Works with AI
    • No license
    Cost not stated

  • NormaCore

    NormaCore is a unified open-source toolkit and platform for developing and operating physical systems, including a 7+1 DoF 3D-printed robotic arm (ElRobot) and a desk lamp.

    Robot armIntermediateBuildability 60/100 · Buildable with some effort
    • Works with AI
    Cost not stated

  • AIRA

    A 3D-printable 7-DoF robotic arm with native LeRobot integration for teleoperation, demonstration recording, and policy training.

    Robot armAdvancedBuildability 57/100 · Buildable with some effort
    • Works with AI
    €2,000

  • VEILINK Arm

    A 6-DOF robotic arm built with 3D-printed parts and Feetech STS3215 bus servos, controlled via LeRobot.

    Robot armIntermediateBuildability 45/100 · Incomplete documentation
    • Work in progress
    • Works with AI
    • No license
    Cost not stated

  • Jyker Arm

    An open-source 3D-printed robotic arm with 5 degrees of freedom and a gripper.

    Robot armIntermediateBuildability 40/100 · Incomplete documentation
    • Works with AI
    • No license
    Cost not stated

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