Wiimote-api

From WiiLi

aceltapascol A library written in C to access the Wii Remote's abilities.

Currently able to toggle LEDs and rumble, as well as use the IR sensor to control the mouse pointer. Can also map wiimote core buttons to the keyboard. With separate processes, two or more wiimotes can be used at once.

A video of a gui using the API is here:

(long version)

(short version)

http://code.google.com/p/wiimote-api/