Remote-Controlled Car Transformed Into A Robot With Arduino. By Elizabeth Fish. Apr 2, 2012 7:13 am PDT [Photo: ... and use the sensors to make the car follow you around. ...

The build relies on the classic Arduino Uno microcontroller, which talks to a HC-SR04 ultrasonic sensor module and two infrared sensors in order to track a human target and follow it around.

Arduino is now offering a fully-assembled robot, designed as a base platform for electronics tinkerers' DIY robotics projects. Its hardware and software are open-source, and designed to be hacked.