FreeTrack - How to Make a 3-Point clip

Mon, 24 Sep 2007 18:45:15 GMT

I've been toying witht he FreeTrack program and I must say it is very good. Considering that TrackIRs cost almost $200US with a headset clip is really outrageous. I went and picked up a $40 webcam and some parts to build one for myself. My goal was to see how fast I can put one together so that I can get my friends to use it at merely the cost of a webcam.

So far I found these IR LEDs from Marlin P Jones Online work better than any others I tried (including RadioShacks)

http://www.mpja.com/prodinfo.asp?number=16798+OP

I paired them in combo with a 1/4A 47Ohm resistor and they work awesome. Now if I could only get my camera FOV increased....

Anyways, I documented my construction technique and I wish I would have taken a photo of the LED assembly before it was wrapped to show the new guys that the Flat Side of the LED is connected to the ground wire and the positive side is connected to a resistor.

Here is a PDF of my construction:

FreeTrackHowTo.pdf

Journal-X1-5446

FreeTrack - How to Make a 3-Point clip