Open-source robots you can actually build

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.

• Works with AI

Level

Beginner

Buildability

98/100

Ready to build

Cost

€226.30

LeKiwi

A low-cost mobile manipulator, a 3D-printed omnidirectional base carrying an SO-101 arm, a Raspberry Pi 5 and cameras, for LeRobot teleoperation.

• Works with AI

Level

Intermediate

Buildability

90/100

Ready to build

Cost

€537.65

AlohaMini2

AlohaMini2 is an open-source dual-arm mobile robot with a motorized vertical lift, built for embodied AI research and real-world manipulation.

• Works with AI

Level

Advanced

Buildability

85/100

Ready to build

Cost

$1,000≈ €893 (ECB rate, 14 Oct 2026)

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.

• Works with AI

Level

Intermediate

Buildability

85/100

Ready to build

Cost

€218.28

Giraffe

A cost-effective, ROS2-compatible 5-DoF robotic manipulator with a leader-follower teleoperation setup, designed to lower the barrier to entry for Embodied AI.

Level

Intermediate

Buildability

80/100

Ready to build

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.

• Works with AI

Level

Intermediate

Buildability

80/100

Ready to build

Cost

$414.21≈ €370 (ECB rate, 14 Oct 2026)

Roboto Origin

A fully open-source DIY humanoid robot designed for walking, running, and customizable motion control.

• Work in progress
• Works with AI

Level

Advanced

Buildability

81/100

Well documented, not finished yet

Cost

Not stated

Koriobots

A toolkit for cable-driven robots that move objects through the air, built from 3D-printed cable drums on industrial servo motors, made for art installations.

Level

Intermediate

Buildability

78/100

Buildable with some effort

Cost

$972.06≈ €868 (ECB rate, 14 Oct 2026)

Watney

Watney is a low-cost, 3D-printable, Raspberry Pi-based FPV telepresence rover with HD video and bi-directional audio.

Level

Intermediate

Buildability

55/100

Buildable with some effort

Cost

Not stated

stoRPer

A modular, adaptable all-wheel-drive rover built around a Raspberry Pi Pico board, with 3D-printed motor mounts and optional add-on bumpers and decks.

Level

Intermediate

Buildability

50/100

Buildable with some effort

Cost

Not stated

Quadruped Bai Servo v1

A low-cost 12-DOF quadruped robot actuated by hobby servos, with optional feet sensors and a trot gait firmware.

Level

Intermediate

Buildability

65/100

Buildable with some effort

Cost

Not stated

POPI

POPI is an open-source quadruped robot designed as a student project, meant to be accessible for education and research and rebuildable by anyone.

Level

Advanced

Buildability

70/100

Buildable with some effort

Cost

Not stated

OpenRover

A 3D-printed Mars Perseverance-style rover replica with a 6-wheel drive, 4-axis robotic arm, and remote control with touchscreen and web dashboard.

Level

Advanced

Buildability

50/100

Buildable with some effort

Cost

Not stated

Kayra

An easy to modify, 3D printable open-source humanoid robot evolved by the community that walks, lifts and can be simulated.

Level

Intermediate

Buildability

55/100

Buildable with some effort

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.

• Works with AI

Level

Intermediate

Buildability

60/100

Buildable with some effort

Cost

Not stated

CUBOTino autonomous

A small, 3D printed robot that solves a Rubik's cube autonomously on a Raspberry Pi.

Level

Intermediate

Buildability

55/100

Buildable with some effort

Cost

Not stated

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.

• Works with AI

Level

Beginner

Buildability

73/100

Buildable with some effort

Cost

€673

Sesame Robot

An open and affordable ESP32-based mini quadruped robot with an OLED face that walks, waves and dances.

Level

Beginner

Buildability

65/100

Buildable with some effort

Cost

Not stated

JetBot

An educational open-source AI robot platform built on NVIDIA Jetson Nano for learning and experimenting with AI-based motion and collision avoidance.

• Works with AI

Level

Beginner

Buildability

57/100

Buildable with some effort

Cost

Not stated

Stack-chan

A JavaScript-driven, super-kawaii desktop robot built on the M5Stack platform, with open-source firmware, MODs, and printable cases.

• Works with AI

Level

Beginner

Buildability

50/100

Buildable with some effort

Cost

Not stated

JPL Open Source Rover

A build-it-yourself, six-wheeled rover scaled down from the JPL Mars rover design, made from consumer off-the-shelf parts.

Level

Intermediate

Buildability

75/100

Buildable with some effort

Cost

$90.80≈ €81 (ECB rate, 14 Oct 2026)

Robotic Arm

An open-source robotic arm controlled by an ESP32-C3 via a PCA9685 servo driver and an Xbox-compatible gamepad.

Level

Intermediate

Buildability

75/100

Buildable with some effort

Cost

¥481≈ €64 (ECB rate, 14 Oct 2026)

U-Arm

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

• Works with AI

Level

Intermediate

Buildability

75/100

Buildable with some effort

Cost

$60≈ €54 (ECB rate, 14 Oct 2026)

HomeBot

A lightweight home robot with modular architecture, supporting remote control, voice interaction, and human following.

• Work in progress
• Works with AI

Level

Intermediate

Buildability

70/100

Buildable with some effort

Cost

Not stated

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.

• Works with AI

Level

Beginner

Buildability

98/100

Ready to build

Cost

€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.

• Works with AI

Level

Beginner

Buildability

73/100

Buildable with some effort

Cost

€673

Sesame Robot

An open and affordable ESP32-based mini quadruped robot with an OLED face that walks, waves and dances.

Level

Beginner

Buildability

65/100

Buildable with some effort

Cost

Not stated

JetBot

An educational open-source AI robot platform built on NVIDIA Jetson Nano for learning and experimenting with AI-based motion and collision avoidance.

• Works with AI

Level

Beginner

Buildability

57/100

Buildable with some effort

Cost

Not stated

Papaya Pathfinder

Open-source, fully 3D-printable ESP32 rover platform with WiFi or ExpressLRS control, available in two variants.

Level

Beginner

Buildability

55/100

Buildable with some effort

Cost

Not stated

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

Stack-chan

A JavaScript-driven, super-kawaii desktop robot built on the M5Stack platform, with open-source firmware, MODs, and printable cases.

• Works with AI

Level

Beginner

Buildability

50/100

Buildable with some effort

Cost

Not stated

MCar

A small Mecanum-wheel car controlled via Wi-Fi using an ESP01S microcontroller.

Level

Intermediate

Buildability

50/100

Buildable with some effort

Cost

¥40≈ €5 (ECB rate, 14 Oct 2026)

MindPaw

A desktop quadruped robot based on ESP8266 with voice control, gesture recognition, web remote, and AI conversation.

• Works with AI

Level

Intermediate

Buildability

50/100

Buildable with some effort

Cost

¥50≈ €7 (ECB rate, 14 Oct 2026)

HumbleArm

A low-cost desktop 6-DOF robotic arm controlled via ROS, using Arduino UNO, an I2C servo driver, and six servos.

• No license

Level

Intermediate

Buildability

83/100

Well documented, no license

Cost

¥200≈ €27 (ECB rate, 14 Oct 2026)

OpenBot

A low-cost small electric vehicle body that uses an Android smartphone as its brain, supporting person following and autonomous navigation.

• Works with AI

Level

Intermediate

Buildability

55/100

Buildable with some effort

Cost

$50≈ €45 (ECB rate, 14 Oct 2026)

U-Arm

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

• Works with AI

Level

Intermediate

Buildability

75/100

Buildable with some effort

Cost

$60≈ €54 (ECB rate, 14 Oct 2026)

Robotic Arm

An open-source robotic arm controlled by an ESP32-C3 via a PCA9685 servo driver and an Xbox-compatible gamepad.

Level

Intermediate

Buildability

75/100

Buildable with some effort

Cost

¥481≈ €64 (ECB rate, 14 Oct 2026)

Hand Exoskeleton

A low-cost 6DoF hand exoskeleton using linkage and tendon mechanisms, controlled by an ESP32 and seven SC09 bus servos.

Level

Intermediate

Buildability

60/100

Buildable with some effort

Cost

¥500≈ €67 (ECB rate, 14 Oct 2026)

JPL Open Source Rover

A build-it-yourself, six-wheeled rover scaled down from the JPL Mars rover design, made from consumer off-the-shelf parts.

Level

Intermediate

Buildability

75/100

Buildable with some effort

Cost

$90.80≈ €81 (ECB rate, 14 Oct 2026)

LeKiwi

A low-cost mobile manipulator, a 3D-printed omnidirectional base carrying an SO-101 arm, a Raspberry Pi 5 and cameras, for LeRobot teleoperation.

• Works with AI

Level

Intermediate

Buildability

90/100

Ready to build

Cost

€537.65

JPL Open Source Rover

A build-it-yourself, six-wheeled rover scaled down from the JPL Mars rover design, made from consumer off-the-shelf parts.

Level

Intermediate

Buildability

75/100

Buildable with some effort

Cost

$90.80≈ €81 (ECB rate, 14 Oct 2026)

RC WheelLeg

A 16-degree-of-freedom wheeled-legged robot designed for Robocon obstacle courses, combining reinforcement learning, MuJoCo simulation, and real-world deployment.

• Works with AI

Level

Advanced

Buildability

65/100

Buildable with some effort

Cost

Not stated

Sawppy the Rover

A motorized model of Mars rovers Curiosity and Perseverance that reproduces Rocker-Bogie suspension, built with 3D-printed parts and serial bus servo wheels.

Level

Intermediate

Buildability

60/100

Buildable with some effort

Cost

$500≈ €447 (ECB rate, 14 Oct 2026)

JetBot

An educational open-source AI robot platform built on NVIDIA Jetson Nano for learning and experimenting with AI-based motion and collision avoidance.

• Works with AI

Level

Beginner

Buildability

57/100

Buildable with some effort

Cost

Not stated

Just1

An open-source autonomous mecanum wheel robot for learning and experimentation that navigates manually or autonomously using a Lidar.

Level

Intermediate

Buildability

55/100

Buildable with some effort

Cost

$250≈ €223 (ECB rate, 14 Oct 2026)

OpenBot

A low-cost small electric vehicle body that uses an Android smartphone as its brain, supporting person following and autonomous navigation.

• Works with AI

Level

Intermediate

Buildability

55/100

Buildable with some effort

Cost

$50≈ €45 (ECB rate, 14 Oct 2026)

OpenPerseverance

A 3D printed, remote controlled rover modeled on NASA's Perseverance Mars rover, built from open-source printable parts.

Level

Advanced

Buildability

55/100

Buildable with some effort

Cost

Not stated

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.

• Works with AI

Level

Beginner

Buildability

98/100

Ready to build

Cost

€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.

• Works with AI

Level

Intermediate

Buildability

85/100

Ready to build

Cost

€218.28

Giraffe

A cost-effective, ROS2-compatible 5-DoF robotic manipulator with a leader-follower teleoperation setup, designed to lower the barrier to entry for Embodied AI.

Level

Intermediate

Buildability

80/100

Ready to build

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.

• Works with AI

Level

Intermediate

Buildability

80/100

Ready to build

Cost

$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.

• Works with AI

Level

Advanced

Buildability

78/100

Buildable with some effort

Cost

Not stated

EL-A3

A 7-DOF desktop robotic arm with a Python SDK and ROS2 control system for research and education.

Level

Advanced

Buildability

75/100

Buildable with some effort

Cost

Not stated

Robotic Arm

An open-source robotic arm controlled by an ESP32-C3 via a PCA9685 servo driver and an Xbox-compatible gamepad.

Level

Intermediate

Buildability

75/100

Buildable with some effort

Cost

¥481≈ €64 (ECB rate, 14 Oct 2026)

U-Arm

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

• Works with AI

Level

Intermediate

Buildability

75/100

Buildable with some effort

Cost

$60≈ €54 (ECB rate, 14 Oct 2026)

Koriobots

A toolkit for cable-driven robots that move objects through the air, built from 3D-printed cable drums on industrial servo motors, made for art installations.

Level

Intermediate

Buildability

78/100

Buildable with some effort

Cost

$972.06≈ €868 (ECB rate, 14 Oct 2026)

Hexapod

A six-legged hexapod robot built from 3D-printed parts, driven by 18 MG996 servos and controlled by a Raspberry Pi 5 with a Servo2040 board.

Level

Advanced

Buildability

71/100

Buildable with some effort

Cost

€280

Balancio-Kit

An ultra-low-cost self-balancing robot that can run a neural network to stay balanced and be controlled wirelessly, built for teaching RL, ML, AI and control.

• Works with AI

Level

Intermediate

Buildability

65/100

Buildable with some effort

Cost

Not stated

Arduino SimpleFOC Balancer

A modular two-wheel self-balancing robot driven by gimbal BLDC motors and the SimpleFOC library.

Level

Advanced

Buildability

60/100

Buildable with some effort

Cost

Not stated

M5Stack Walk-chan

A small bipedal walking robot controlled by an M5Stack board, with a sliding battery that shifts its balance between legs.

Level

Intermediate

Buildability

60/100

Buildable with some effort

Cost

Not stated

Balance Ball

A spherical robot that balances and maneuvers in three degrees of freedom using three orthogonal flywheels and a omnidirectional wheel base.

Level

Advanced

Buildability

55/100

Buildable with some effort

Cost

¥1,000≈ €133 (ECB rate, 14 Oct 2026)

CUBOTino autonomous

A small, 3D printed robot that solves a Rubik's cube autonomously on a Raspberry Pi.

Level

Intermediate

Buildability

55/100

Buildable with some effort

Cost

Not stated

Dagor Biped

A low-cost, easy-to-print biped robot hardware design remixed from the Open Robot Dynamic Initiative Bolt robot, controlled by the Dagor brushless motor control module.

Level

Advanced

Buildability

55/100

Buildable with some effort

Cost

Not stated

Hexapod-ROS

An open-source hexapod robot platform based on ROS2, featuring real-time gait control and laser navigation.

• Work in progress

Level

Advanced

Buildability

75/100

Buildable with some effort

Cost

Not stated

Open Quadruped

An open-source 3D-printed quadrupedal robot that performs gait generation with Bezier curves and full 6-axis body pose control.

Level

Advanced

Buildability

70/100

Buildable with some effort

Cost

Not stated

POPI

POPI is an open-source quadruped robot designed as a student project, meant to be accessible for education and research and rebuildable by anyone.

Level

Advanced

Buildability

70/100

Buildable with some effort

Cost

Not stated

Spot Micro - Leika

An open-source ESP32-based quadruped robot with a web-based controller and a MuJoCo simulator.

Level

Advanced

Buildability

70/100

Buildable with some effort

Cost

Not stated

Quadruped Bai Servo v1

A low-cost 12-DOF quadruped robot actuated by hobby servos, with optional feet sensors and a trot gait firmware.

Level

Intermediate

Buildability

65/100

Buildable with some effort

Cost

Not stated

Sesame Robot

An open and affordable ESP32-based mini quadruped robot with an OLED face that walks, waves and dances.

Level

Beginner

Buildability

65/100

Buildable with some effort

Cost

Not stated

4T-POM-X4

An open-source 12-degree-of-freedom quadruped robot designed for learning, development, and secondary innovation.

Level

Intermediate

Buildability

55/100

Buildable with some effort

Cost

Not stated

SpotMicro ESP32

A 3D-printable quadruped robot dog with support-free printed parts, controlled by an ESP32-DevKitC with heavy computation offloaded to external devices.

Level

Advanced

Buildability

55/100

Buildable with some effort

Cost

Not stated

Roboto Origin

A fully open-source DIY humanoid robot designed for walking, running, and customizable motion control.

• Work in progress
• Works with AI

Level

Advanced

Buildability

81/100

Well documented, not finished yet

Cost

Not stated

MiniLoong

A small 22-degree-of-freedom humanoid robot designed for reinforcement learning and imitation learning, featuring a rotatable waist, head, and upper limbs.

• Work in progress
• Works with AI

Level

Advanced

Buildability

70/100

Buildable with some effort

Cost

Not stated

NanoLoong Bipedal

A 60 cm tall bipedal robot combining Pixar-style and Disney BDX designs, using brushless motors and reinforcement learning.

• Works with AI

Level

Advanced

Buildability

70/100

Buildable with some effort

Cost

¥15,000≈ €2,002 (ECB rate, 14 Oct 2026)

Poppy Humanoid

An open-source, 3D printed humanoid robot designed for research and education, with modular parts for many applications and experiments.

Level

Advanced

Buildability

65/100

Buildable with some effort

Cost

$8,000≈ €7,146 (ECB rate, 14 Oct 2026)

Asimov 1

An open-source 1.2 m, 35 kg humanoid biped with 25 actuated degrees of freedom that can be built, simulated and customized.

Level

Advanced

Buildability

55/100

Buildable with some effort

Cost

Not stated

Bambot

An open-source, low-cost humanoid robot designed for AI experimentation and education.

• Work in progress
• Works with AI

Level

Intermediate

Buildability

55/100

Buildable with some effort

Cost

$300≈ €268 (ECB rate, 14 Oct 2026)

ElectronBot

A mini desktop robot with 6 degrees of freedom, USB communication, and a display screen, inspired by WALL-E's EVE.

Level

Advanced

Buildability

55/100

Buildable with some effort

Cost

Not stated

Kayra

An easy to modify, 3D printable open-source humanoid robot evolved by the community that walks, lifts and can be simulated.

Level

Intermediate

Buildability

55/100

Buildable with some effort

Cost

Not stated