The IR camera on the Wii remote can be easily accessed using the Bluetooth connection. However, this can be a pain for embedded applications where you don’t want to rely on a “permanent” Bluetooth connection or resort to using a computer with Bluetooth.
The alternative is to connect directly to the camera using I2C. This is not trivial since the protocol to communicate to the camera to the I2C hasn’t been been thoroughly explored. Kako from Japan(why is all the awesome physical computing stuff always from Japan??) had initially demonstrated that it you can connect to the IR camera using a I2C and a microcontroller. Now, he has released schematics and code for doing so with an Arduino!
With this information you can now use the IR camera as a cheap motion capture camera without having to use a computer with Bluetooth connection.
Edit: Someone has posted a translation and guide to using the code here:
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Tags: physical computing, wii remote
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