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Explore robots

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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5 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

  • 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

  • Poppy Ergo Jr

    A small, low-cost 6-degree-of-freedom 3D-printed robot arm driven by Dynamixel XL-320 motors and controlled from a Raspberry Pi.

    Robot armBeginnerBuildability 50/100 · Buildable with some effort
    Cost not stated

  • 4DOF Robot Arm

    A small 4-degree-of-freedom robot arm with 3D printed parts, driven by four SG90 servos and an Arduino Nano.

    Robot armBeginnerBuildability 45/100 · Incomplete documentation
    Cost not stated

  • Pedro

    Pedro is an open-source STEM robot whose 3D-printable parts (arm, gear, servo holder and base) are provided as STL files.

    Robot armBeginnerBuildability 40/100 · Incomplete documentation
    Cost not stated

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