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FreeTrack Forum > FreeTrack : English Forum > Support : Tracking System > Really low field of view (F.O.V) with infra-red LEDs!

RSS >  Really low field of view (F.O.V) with infra-red LEDs!
lukinhasb #1 18/12/2009 - 20h47

Class : Apprenti
Posts : 18
Registered on : 14/09/2009

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Hello, I've just made an model that uses infra-red instead of normal LEDs, but it has an REALLY low field of view, it's about 7~10º of F.O.V, I can barely move my head without it "disappearing" for the webcam.

What can I do?

I've read this part of the Hardware FAQ:

The LEDs fade away when I turn my head only a small amount.

The viewing angle of your LEDs is too small,  increase the viewing angle by filing the LED lens tips down flat, almost to the metal part and then make the final finish transparent matte (not too shiny, not too rough).



I didn't understand what I have to do
C6_LeBorgne #2 19/12/2009 - 13h49

Class : Beta Tester
Posts : 224
Registered on : 09/08/2007

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Just make the DEL "Flat" using a Dremel for example with de "Sand paper ring " as near as possible of the "chip" .

Sorry for my English
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C2D 6420 , 2Go DDR II , 570 GTX , Wiimote , A-quip mini BT Dongle , Thrustmaster Warthog , Pro Gamer Command Unit et PCDASH2
lukinhasb #3 20/12/2009 - 18h03

Class : Apprenti
Posts : 18
Registered on : 14/09/2009

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Look, this isn't a joke, but can you draw it for me? lol

I'm an 17 years old Brazilian, having my first contacts with eletronics by now, I don't know wich parts of the led you are talking about.

Thanks for the attemption.
C6_LeBorgne #4 20/12/2009 - 21h06

Class : Beta Tester
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like this  :

Posted Image
Posted Image
C2D 6420 , 2Go DDR II , 570 GTX , Wiimote , A-quip mini BT Dongle , Thrustmaster Warthog , Pro Gamer Command Unit et PCDASH2
lukinhasb #5 20/12/2009 - 22h25

Class : Apprenti
Posts : 18
Registered on : 14/09/2009

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Aaah, I see!!!

Thanks, I'll try it!

I'll tell my results in a while
eagleeye #6 22/12/2009 - 02h25

Class : Apprenti
Posts : 2
Registered on : 22/12/2009

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do you mean i should cut my led to the metal part but that will damage it ( i think) and how can i do this plz can you tell me  i really want to have this :(
C6_LeBorgne #7 22/12/2009 - 08h16

Class : Beta Tester
Posts : 224
Registered on : 09/08/2007

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"Cut" as near as possible but keep some "plastic" above the chip .

You can use a dremel with the "sand ring"

Posted Image

Very effective , it takes only couple of secs . Use a clamp to avoid injuries
Posted Image
C2D 6420 , 2Go DDR II , 570 GTX , Wiimote , A-quip mini BT Dongle , Thrustmaster Warthog , Pro Gamer Command Unit et PCDASH2

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FreeTrack Forum > FreeTrack : English Forum > Support : Tracking System > Really low field of view (F.O.V) with infra-red LEDs!

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