They are roughly the size of a soccer ball and utilize CO2 thrusters and ultrasonic sensors to move around ... platforms such as Arduino and LEGO Mindstorms EV3, which makes for an easy transition ...

Lego, but with a grown-up, robotic twist - the Mindstorms series ... including a controller block and sensors. The EV3 series is currently available for around £300 or $350 online, and comes ...