1. Separating the camera:
I was wondering if anyone had done work separating the caemra from the Wii Remote.  Two of the pins seem to be an I2C bus.  There's at least one other that seems to have signal on it, but it looks analog.  The dearth of external components around the camera suggests that it's a fairly stand-alone module though.  So ... anyone else done work in this direction?

2. Peak sensitivity wavelenth:
Anyone know what the peak sensitivity of the camera is?  I did some testing with the sensor bar and a small bank of filters, and it seemed like the LEDs in there were probably 950nm.

3. Shutter length of the camera:
Some other testing I've done suggests that the exposure length is significantly less than 10ms - more like 1ms.  Has anyone explored this, and whether any of the configuration registers affect it?

4. Photometric calibration:
My current research requires a pretty accurate photometric calibration of the camera.  Before I reinvent the wheel I was wondering if anyone else had worked on this.

The point tracking is done in the camera module itself.  You can observe the same bits seen in the input reports going over the I2C bus.