Arduino and the Wii Nunchuck

Here is an example of how to read the accelerometer, joystick and buttons from the Wii Nunchuck using the Arduino I2C BUS, one of thousands of examples around the Internet, Todbod Blog wrote a tutorial on how to do this, he also create a small adapter to plug in it to the Arduino without the need of ruin the connector of the Wii Nunchuk.

From - Hackaday