QuadrupedBy Rune Harlyk92 GitHub starsSources reviewed Oct 30, 2026

Spot Micro - Leika

An ESP32-based quadruped with a 3D-printed body, 12 servos and a web-based controller.

Project documentation

Before you build

Five answers, each linked to its source

What does it cost?

Not documented

No cost in the reviewed sources.

Can I sell what I build?

YesCommercial use OK

Hardware MIT · Software MIT License. Licensing source

What’s open?

4 of 6CAD: PartialBOM: AvailablePCB: Not documentedCode: AvailableSim: AvailableGuide: Available

CAD partial · PCB not documented. All six files

What does it run on?

ESP32MuJoCo

Simulation: MuJoCo simulation environment. Software

Is it maintained?

Active

Latest activity Oct 29, 2026 · main repo last commit Oct 29, 2026 · 729 commits in the last 52 weeks · 4 contributors Activity

01 / Under the shell

The specifications.

Hardware, build and software on one sheet. Every fact links to where we found it.

Leika is an ESP32-based quadruped robot with a 3D-printed body, 12 servos and an optional IMU, compass, gesture sensor and camera. Its firmware supports inverse kinematics and multiple gaits; a web-based controller provides robot controls, and the project includes a MuJoCo simulation environment.

Hardware

Actuators
12 · servos README
Build
3D-printed · Community Spot Micro designs Documentation
Leg control
3-DOF legs README
Servos
12 servos README

Building it

Body fabrication
3D printed from community Spot Micro designs README
Build documentation
Complete build instructions are available in the documentation. README

Software & simulation

Firmware
FreeRTOS; inverse kinematics and gait generation README
Web controller
SvelteKit interface embedded in the firmware with LittleFS README
Simulation and training
MuJoCo environment with a Gymnasium interface and a residual PPO policy using Stable-Baselines3 README

02 / The files behind the robot

What’s open.

Six parts of the build, each checked separately. Gaps stay visible.

Availability of build files
PartStatusWhat’s thereLicenseSource
CADPartialThe repository identifies 3D-printable parts and CAD files.Not documentedhardware/
Bill of materialsAvailableComponents and BOM documentation.Not documented1_components.md
ElectronicsNot documentedNot documentedNot documentedNo source found
CodeAvailableESP32 firmware and web controller project files.Not documentedesp32/
Simulation modelAvailableMuJoCo simulation environment.Not documentedsimulation/
Assembly guideAvailableAssembly instructions are listed in the project documentation.Not documented2_assembly.md

03 / Know before you build

Can you sell it?

YesCommercial use OK

The whole repository, design files included, is MIT. You can build, modify and sell robots based on it, as long as you keep the license and copyright notices.

Hardware
MIT
Software
MIT License
Read the licensing source

04 / The upstream project

Is it maintained?

runeharlyk/spotmicroesp32-leika

ActiveLatest activity Oct 29, 2026, 1 day before the snapshot

The main repository’s last commit was Oct 29, 2026.

COMMITS PER WEEK · MAIN REPOSITORY729 in 52 weeks
Stars
92
Forks
28
Contributors
4
Latest release
v0.3.0 · Oct 3, 2026

Snapshot captured Oct 30, 2026. Recorded figures, not live metrics. Active: activity within 90 days of the snapshot. Quiet: within a year. Dormant: longer.

05 / Parts & kits

A head start.

Maker-listed sellers only. No affiliate links or paid placement.

MAKER’S COST

Not documented

No cost in the reviewed sources.

Kit availability is not documented in our reviewed sources.

06 / Side by side

Compare with other quadrupeds.

Other quadrupeds in the directory, most recently active first. Same sources, same rules.

Spot Micro - Leika compared with Physical Ant, Sesame, Orion
RobotCostOpen filesCan I sell it?Runs onMaintainedStars
Spot Micro - LeikaThis robotRune HarlykNot documented4 of 6YesHW MIT · SW MIT LicenseESP32MuJoCoActiveOct 29, 202692
Physical AntOpenmind-Research-Institute$2,230.61BOM total4 of 6YesHW MIT · SW MITPythonMuJoCoActiveOct 29, 202676
SesameDorian ToddNot documented6 of 6YesHW Apache-2.0 · SW Apache-2.0ESP32ArduinoPythonActiveOct 15, 20264,876
OrionAshishA26Not documented5 of 6Check firstHW not documented · SW not documentedIsaacActiveOct 7, 2026297
Spot Micro - Leika compared with Physical Ant and Sesame
This robotSpot Micro - LeikaPhysical AntSesame
Cost
Not documented$2,230.61Not documented
Can I sell it?
YesYesYes
Open files
4 of 64 of 66 of 6
Runs on
ESP32, MuJoCoPython, MuJoCoESP32, Arduino, Python
Maintained
ActiveOct 29, 2026ActiveOct 29, 2026ActiveOct 15, 2026

Upkeep is measured against each robot’s own snapshot. Costs keep the maker’s scope, so check what each figure covers.

See them in the table

07 / Follow the evidence

Open books.

Repository files are pinned to commit 6734d03. Websites and papers are listed with their review dates.

  1. 01readme.md at 6734d03Reviewed Oct 30, 2026
  2. 02LICENSE.md at 6734d03Reviewed Oct 30, 2026
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