Very simple adpater for hooking a Wii Nunchuck to your Arduino or other microcontroller. Example Arduino code is is in firmware/WiichuckDemo. More details here: http://todbot.com/blog/2008/02/18/wiichuck-wii-nunchuck-adapter-available/
OmIkRoNiXz/wiichuck_adapter
Very simple adpater for hooking a Wii Nunchuck to your Arduino or other microcontroller
Objective-C