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KingKongRobotics

KingKongRobotics/jumper

🦀 Jumper — an open-source crab robot.

View on GitHub ↗https://kingkong.tech/jumper ↗
crab-robotopen-source-robotsrobotrobotics
Stars
32
Forks
5
Watchers
32
Open issues
0
Contributors
1
Language
Python
License
Apache License 2.0
Default branch
main
Created Sep 28, 2026Updated Sep 30, 2026

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README

Jumper

Jumper

English | 简体中文

Design appearances. Train motions. Create worlds for Jumper, a 22-DoF crab robot. View hardware →

Open this repository in an AI coding assistant and describe what you want in one sentence. The linked projects and guides below give your assistant the workflows to follow.

🦀 Get a free Jumper! Find out how →

One sentence to design an appearance

Design a warm sand ranger appearance for Jumper with coordinated body and limb colors, then export a .skin.
Warm sand ranger appearance Silver armor appearance Raphael Turtle appearance
Warm sand ranger Silver armor Raphael Turtle

Browse all skins

One sentence to train a motion

Train a stable tripod gait for Jumper, replay and evaluate the result, then package it as an .app.
Jumper walking Jumper changing posture Jumper waving
Walk Posture Gesture
Dance simulation
Dance website showcase		 Jump simulation
Jump website showcase		 Grasp simulation
Grasp website showcase
Dance Jump Grasp

One sentence to create a scene

Create a park pump-track scene for Jumper with rolling terrain, trees and benches, then export a .map.
Park pump track scene Bedroom scene Soccer scene
Park pump track Bedroom Soccer

Browse all maps

Where to find things

Resource Purpose
jumper-design Appearance and scene creation; your assistant reads its instructions and uses its tools as needed.
Training tutorial Motion training, replay and policy export in this repository.
Motion bundles Package trained motions and their controller as an .app; see the build guide for prerequisites.
Project guide Setup, current capabilities and further documentation.

Training builds on mjlab, rsl_rl, MuJoCo and MuJoCo Warp. Example appearance and scene images come from jumper-design; image sources and third-party notices record attribution.

License

Copyright 2026 KingKong Robotics.

Maintainer-owned project materials are licensed under Apache-2.0. See LICENSE, NOTICE, and licensing details. Third-party materials remain under their respective terms, and generated outputs do not automatically inherit this repository's license.