The Wii Nunchuck is connected to my Arduino using I2C.

For now, the webcam is just a standard webcam with the housing removed, and connected via USB.

It uses  hacked up code from here and here.

(If you want to make something like this, Making Things Talk is an outstanding book.)

Here’s a sample video:

[update]: Hello Hack a Day people!

[update]: As Dokument says, here’s an almost identical setup created long before I did this.

[update]: If you don’t want to cut the end off your Wii Nunchuck, you can buy one of these.