True to the DIY ethos, an Arduino-based RC system is used to drive the steering servo and motor speed controller, with a home-built pistol-grip controller.

Made entirely from 3D-printed components, the prototype excavator demonstrates new, large-scale 3D-printing processes, including new technology for printing metals. IMAGE COURTESY IFPE ...

An Arduino Pro Mini combined with tiny Pololu motor controllers is enough to get the bot rolling, and a Flysky FS-X6B receiver is onboard so the whole thing can be operated with a standard RC ...