THE OPEN ROBOT DIRECTORY
Find your next robot to build. Discover open-source hardware, from the first printed part to the code that makes it move.
LESS SCROLLING.01 THE COLLECTION
Small hands. Big ideas. A rover for the long way home.
There’s a whole world of hardware to make your own.
HandPollen Robotics2,462 GitHub stars, snapshot Oct 21, 2026
3D-printed · 8 actuators
A 400 g four-finger hand with all eight servos inside the hand, so no cables run to a forearm.
Robotgustavomayoral
Mixed · 4 actuators
A large-format pen plotter built with 3D-printed parts and aluminum extrusion for drawing physical artwork.
RoverSettorezero24 GitHub stars, snapshot Oct 30, 2026
3D-printed · 2 actuators
A 3D-printed Arduino Uno educational rover with examples for obstacle avoidance, line following and cellphone control.
RoverZoheb Alvi
3D-printed · actuators not documented
A self-driving zero-turn mower retrofit with parametric CAD, printable brackets and mounts, and control software for an iPad.
ArmCan Ertal9 GitHub stars, snapshot Oct 30, 2026
3D-printed · actuators not documented
A compact 3D-printed desktop arm with an ESP32-C3 Mini, four SG90 servos, and browser-based joystick control.
ArmNew Dexterity
Mixed · actuators not documented
A bimanual platform of two modular MOAH arms, each with four axially driven joints and one tendon-driven joint.
RobotDominik Mahnic28 GitHub stars, snapshot Oct 30, 2026
3D-printed · actuators not documented
A CNC-style plotter for brushes and pens, built from a parametric X–Y gantry and a Z brush-lift mechanism.
Mobile robotOpenPodcar50 GitHub stars, snapshot Oct 30, 2026
Not documented · actuators not documented
A scooter-based vehicle platform for autonomous-vehicle research, with hardware build instructions, Arduino speed control and ROS vehicle drivers.
Quadrupedpsrobotics
3D-printed · 12 actuators
A 12-DOF quadruped built from printed parts and hobby servos, with optional foot sensors.
RoverRoger-random
Mixed · 10 actuators
A motorized model of the Curiosity and Perseverance rovers, built with aluminum extrusions and 3D-printed plastic parts.
Dorian Todd4,876 GitHub stars, snapshot Oct 30, 2026
3D-printed · 8 actuators
An ESP32-based quadruped with eight servos and a 3D-printed PLA body, designed as a platform for working with walking robots.
ArmT. Selçuk Yüksel
3D-printed · 4 actuators
A 3-DOF 3D-printed Arduino arm with four SG90 servos, supporting joint control, inverse kinematics and gripper control.
ArmMarginally Clever Robots, Ltd.24 GitHub stars, snapshot Oct 30, 2026
3D-printed · actuators not documented
A six-degree-of-freedom industrial robot arm with 3D-printed parts and a stated 2 kg capacity at 50 cm.
Thayslm30
3D-printed · actuators not documented
A 3D-printed robotic arm with STL parts, Arduino control code and documented assembly steps.
Armbandofpv
3D-printed · actuators not documented
A robotic arm that picks up and drops off recycling detected by a Raspberry Pi.
BipedLuwu Dynamics1,644 GitHub stars, snapshot Oct 30, 2026
3D-printed · 15 actuators
A duck-shaped, 3D-printable biped built around an Arduino UNO Q and 15 serial servos.
QuadrupedJerome-Graves168 GitHub stars, snapshot Oct 30, 2026
3D-printed · actuators not documented
A 3D-printed quadruped for locomotion research, with four hobby-servo-powered limbs and printable parts.
Costs are the maker’s documented figures, with their original scope. Stars are recorded GitHub snapshots, never a quality score. Active: activity within 90 days of the snapshot. Quiet: within a year. Dormant: longer. Read between the files
02 READ BETWEEN THE FILES
A public repository is a start. A buildable robot takes more. We look at six parts of every project, so you know what’s there before you get your hands busy.
Design files and printable parts. See what you can make, modify, and put together.
A bill of materials. The shopping list behind the build, with costs where documented.
Circuit designs, boards, and wiring. Custom hardware or off-the-shelf components.
The software that brings it to life. Check the stack before you start building.
A digital model to test, train, and explore before the hardware meets the real world.
Assembly instructions. Because a folder full of files isn’t the same as a finished robot.
Those are different questions. Hardware and software can carry different licenses. Every listing explains what’s available and what the documented licenses allow. If we don’t know, we say so.
