FreeTrack Forum

Hello fellow members,

I search somebody who has epxeriences with the above mentioned combination. I use a Speedlink SL-6820 webcam and want to create my tracking-clip with the SFH485p LEDs and a 9V block power supply.

First question:
How can I remove the IR filter of this cam? I screwed out the focus shaft, but I can't remove the front-ring, in which the IR filter is placed. Help please!  

Second Question:
When the filter is removed and a visible light filter (floppy tape) is placed, how much forward current I should power to the LEDs? I think a value of 25 mA per LED would be fine, are you agree guys?

Thanks a lot for your help and answers!  

they recommend 25mA so use the calculator to figure it out with a 9v source. i cant help u with the webcam it doesnt seem to be listed