While there are a couple of open-source brushless drivers already available, [neuromancer2701] created his own brushless motor controller on an Arduino shield.

Why this hasn't been done before is a mystery to me. This little hack project by Kellbot of NYCResistor takes a rolling ball, an optical mouse, a gutted PS2 controller, and some Arduino hacking ...

The Esplora can emulate traditional input devices like a mouse or keyboard, and Arduino envisions it being used for applications beyond gaming, including as a controller for musical software, or ...