Open-source 3D-printed mobile robot with a 5-joint arm released
Someone built a wheeled robot with a 5-joint arm entirely from 3D-printed parts and released all the files for free. It uses four wheels to move around and steer, while the arm can reach and bend in five directions. Anyone with a 3D printer and basic electronics can build one from the shared designs.
This is a mobile robot built almost entirely from parts printed on a consumer 3D printer. It moves on four wheels using a differential drive system — meaning it steers by spinning the left and right wheels at different speeds, the same way a tank turns. Mounted on top is a robot arm with five degrees of freedom, which means it can move in five independent ways, letting it reach, rotate, and grip objects.
All design files and software are published openly, so hobbyists and students can download and build their own version. It's a solid hands-on learning project for anyone interested in robotics, but it is a hardware project with no direct connection to AI agents or software cost reduction.
Key points
- Entire robot built from 3D-printed parts — no custom machining needed
- 5-degree-of-freedom arm can reach and move in multiple directions
- Four-wheel differential drive handles steering
- All design files and code are free to download (open source)
- Good starting point for hobbyists learning robotics
Quick term guide
- Electron
- A framework that lets developers build desktop apps using web technologies; the official Discord app uses it, which can make it feel heavier on Mac.
- differential drive
- A way to steer a wheeled robot by spinning the left and right wheels at different speeds, like a tank.
- degrees of freedom
- The number of independent ways a robot arm can move — more degrees means more flexibility.
- software
- Programs or apps that run on a computer or smartphone.
- hardware
- The physical parts of a computer that you can touch.
- AI agents
- AI agents are AI tools that can carry out steps toward a goal, not just answer once.
- AI agent
- An AI program that can inspect information and suggest what to do next.
- open source
- Software whose code is available for people to view and often modify.