I'll add to that thanks!
I did some research on the site here and made myself a nice 3 point cap and modded camera last night using:
- microsoft vx1000 camera ($20) - modded using IR filter removal and natural light filter
- A sturdy baseball cap. ($0)
- 3 @ 1.6v 50ma IR emitters - shaved flat to increase viewing angle (important!) ($5 for 3)
- 3 LED snap-in casings ($2)
- 1 @ 24 ohm resistor ($.30)
- a small 4xAA battery box with a built in on/off switch ($3)
- some wire, solder etc ($2)
- Freetrack: pricele$$
Total cost: CDN $32.30
By the way, the vx1000 is on sale right now at "The Source" for $20! I would have used USB with a 200ma fuse assembly but the electronics components store I was at was sold out of .2A fuses.
I have great results with 6DOF so far!
http://www.youtube.com/watch?v=ft0i6x6MYQw