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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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39 robots of 270

Page 2 of 2 · Ready to build first, then by buildability

  • No photo yet
    Robot arm

    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.

    Level
    Beginner
    Buildability
    50/100
    Buildable with some effort
    Cost
    Not stated
  • No photo yet
    Robot arm

    4DOF Robot Arm

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

    Level
    Beginner
    Buildability
    45/100
    Incomplete documentation
    Cost
    Not stated
  • Robot arm

    DIY Delta robot

    A DIY delta-type parallel robot controlled from a Python application with live kinematics visualization and Bluetooth connection.

    Level
    Advanced
    Buildability
    45/100
    Incomplete documentation
    Cost
    Not stated
  • Robot arm

    Dolphin Robot Arm

    A 3-degree-of-freedom desktop dolphin robot arm controlled via an STM32 microcontroller and a PS2 gamepad.

    Level
    Intermediate
    Buildability
    45/100
    Incomplete documentation
    Cost
    Not stated
  • Robot arm

    H1 6-Axis 3D-Printed Manipulator

    A 6-axis 3D-printed robotic arm capable of understanding human commands and performing tasks.

    Level
    Intermediate
    Buildability
    45/100
    Incomplete documentation
    Cost
    Not stated
  • No photo yet
    Robot arm

    Sixi 2 Robot Arm

    An open source six degree of freedom industrial robot arm that can hold 2kg at 80cm.

    Level
    Advanced
    Buildability
    45/100
    Incomplete documentation
    Cost
    Not stated
  • Robot arm

    6-DOF Articulated Robot Arm V1

    A low-cost, six-degree-of-freedom articulated robotic arm designed for education, research, and small-scale automation tasks.

    Level
    Intermediate
    Buildability
    40/100
    Incomplete documentation
    Cost
    Not stated
  • Robot arm

    ALTO 3D Printed 6 Axis Robotic Arm

    A 3D printed desktop high precision 6 axis robotic arm controlled over USB with a Python API.

    Level
    Advanced
    Buildability
    40/100
    Incomplete documentation
    Cost
    $400≈ €357 (ECB rate, 14 Oct 2026)
  • Robot arm

    EEZYbotARM

    A four-axis, 3D-printable hobby robot arm controlled from Python and Arduino, with 3-D forward and inverse kinematics.

    Level
    Intermediate
    Buildability
    40/100
    Incomplete documentation
    Cost
    Not stated
  • Robot arm

    Pedro

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

    Level
    Beginner
    Buildability
    40/100
    Incomplete documentation
    Cost
    Not stated
  • Robot arm

    SCARA Parallel

    A parallel SCARA robotic arm designed for graduation project, featuring closed-loop stepper motors, harmonic reducers, carbon fiber rods, 3D-printed joints, and motion control with linear interpolatio

    Level
    Advanced
    Buildability
    40/100
    Incomplete documentation
    Cost
    Not stated
  • No photo yet
    Robot arm

    BetaBots Robot Arm

    A 3D-printable robot arm, current version V4 (Green), designed for printing and assembly by hobbyists.

    Level
    Intermediate
    Buildability
    35/100
    Incomplete documentation
    Cost
    Not stated
  • No photo yet
    Robot arm

    Forge 1

    An open-source 6-DOF desktop robotic arm powered by NEMA 17 stepper motors.

    • Work in progress
    Level
    Intermediate
    Buildability
    35/100
    Incomplete documentation
    Cost
    Not stated
  • No photo yet
    Robot arm

    Panthera-HT

    Mechanical model and parts list of HighTorque's Panthera-HT robot arm: SolidWorks 2024 sources, STEP files and a BOM spreadsheet.

    Level
    Advanced
    Buildability
    20/100
    Incomplete documentation
    Cost
    Not stated
  • Robot arm

    OmniT-Hand

    A minimalist underactuated robotic hand with one motor per finger, achieving adaptive grasping for humanoid robots.

    Level
    Intermediate
    Buildability
    15/100
    Incomplete documentation
    Cost
    ¥1,230≈ €164 (ECB rate, 14 Oct 2026)

Robots 25–39 of 39

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