Building appsIntermediate · about 20 minFree · no signup
This robot crab's whole design is free on GitHub
KingKong Technology put its 22-joint Jumper crab robot on GitHub. Work out what building one would really take before you start.
By Alan Brown
🦀 The internet just fell in love with a robot crab.
- 🏭 It's called Jumper, built by KingKong Technology in China, a company that says its magnetic encoders are inside most Chinese humanoid robots.
- 📂 Jumper's design is on GitHub for free, including a simulation and training environment: github.com/KingKongRobotics/jumper
- 🦾 22 joints, each with its own smart servo, plus a depth sensor and a wide-angle camera.
- 🗣️ An AI toolkit lets you describe a new move in plain English and trains it in simulation.
- 🧹 It walks, jumps, grabs up to 1 kg and can even scrub the floor. Galaxus has the full spec: www.galaxus.ch/en/page/jumper-the-crab-robot-from-kingkong-technology-is-now-open-source-44021
Context & limitations
Open source means the designs and code are free; you'd still need to buy or make the parts, and KingKong hasn't announced a price for a ready-made Jumper. The prompt below works out what building one would take.
Do this yourself
Open source makes the files free, not the robot. Checking parts, cost, tools and skills first stops a weekend project turning into a drawer of half-built parts.
Want to build this with a teacher?
Pathwise Academy runs small, hands-on AI classes in Singapore for ages 10–17 and adults.