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FreeTrack Forum > FreeTrack : English Forum > Support : Tracking System > what to do next
lawrence | #16 26/01/2012 - 06h47 |
Class : Apprenti Off line |
this is what the pack says on it
5mm yellow LED 3vdc-20mA-55mcd on the back of packit says: peek emmision wave length 585typ veiwing angle 40 |
dewey1 | #17 26/01/2012 - 08h49 |
Class : Habitué Off line |
So why are you using yellow LEDS?
The Vf maximum is 3 V. Typical is 2.1 V The maximum current is 20mA. Far from the 3 A you mentioned. Do yourself a big favor and use IR LEDS like the SH485P. Use 33 Ohm 1/4 W or 1/2 W for each LED if using 3 V parallel circuit. http://forum.free-track.net/index.php?showtopic=1856 DigiKey is a great vendor for US customers. Check this for simple on/off 2-AA battery holder; http://search.digikey.com/us/en/products/SBH321AS/SBH321AS-ND/275301 IR LEDs; http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=475-1470-ND I purchased 10 SFH485P for $6.81 including shipping ($2.07) from Digi-Key. So I got 7 spares to build clips or hats. There was a price break at 10 pieces. 10 pcs for $.44 each or 1-9 for $.77 each. Almost twice as many for same price. (10 versus 5)
Edited by dewey1 on 26/01/2012 at 08h53.
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Steph | #18 26/01/2012 - 11h52 |
Class : Moderator Off line |
Well, I suppose your guy got a well working freetrack headmount, hm...otherwise I'm sure dewey1 got one and mine works fine too, like many others here in the forum. Freetrack mounts are quit simple elecronics and not a big thing even for beginners if you accept and follow some simple advises, read some informations given in multiple threads and ask specific questions.
You can have a try first without modification and a good daylight-Filter (floppy disk etc.) otherwise: http://forum.free-track.net/index.php?showtopic=2633&message=14351 |
lawrence | #19 27/01/2012 - 00h18 |
Class : Apprenti Off line |
im using two AA batterys to power my head set if it be sugested i do have some 33ohm resisters i can add to it if you think it will help as far as using the yellow LED ive seen videos of all diffrent colors that were used im heading down tomarrow to pic up a new web cam that is compatable with the program
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Steph | #20 27/01/2012 - 10h12 |
Class : Moderator Off line |
If you used yellow LEDs you don't need to modify your webcam, but you can't used your mount in daylight conditions. You only can use it in a dark room, without any other light-source in front of the cam.
Therefore it is advantageous to use infra-red LEDs, allowing you to use Freetrack tracking in any conditions. dewey1 always gives you the best reference for ir LEDs: IR LEDs; http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=475-1470-ND |
lawrence | #21 27/01/2012 - 21h09 |
Class : Apprenti Off line |
well ok i dont have the resorces to order online so i have to go to the local radio shack they have all kinds there. is it recamended that i just use white or does the color mater
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Steph | #22 29/01/2012 - 13h39 |
Class : Moderator Off line |
I'm not sure you have understand the sense for using IR (infra-red) LEDs.
Source Wikipedia The color of IR-LEDs is in infra-red wavelength, so you can't see it. If radio shack do not have the SFH 485 P ask for some other Ø5mm IR-LEDs with high beam angle. |
dewey1 | #23 30/01/2012 - 20h08 |
Class : Habitué Off line |
Use these: http://www.radioshack.com/product/index.jsp?productId=2062565 The LEDS will probably need to have the lens sanded and polished to increase beam angle. Series circuit with USB power: 1.28 x 3= 3.84 5.0-3.84=1.16 1.16/.05=23.2 Ohms for 50 mA Use a 1/2W 5% resistor in the range of 20 Ohm to 22 Ohm. 20 Ohm will be 58 Ma current. 22 Ohm will be 53 Ma current. You could use 10 Ohm resistors and series wire for 20 Ohm. |
lawrence | #24 01/02/2012 - 18h09 |
Class : Apprenti Off line |
went out a got the right stuff every thing i got is by the book ended up getting the logitech C510 it was on the list and wal-mart had it does the IR Filter need to be removed didnt say on web page. i hooked it up turned on my head set and the free track software worked at first when i had my bedroom light on i could see red then i turned it off and nothing showed up
im getting 30FPS NOW VS 8 |
dewey1 | #25 01/02/2012 - 20h01 |
Class : Habitué Off line |
What does that mean? Care to explain better? IR-LEDS? Series 3 LED? What power source? What resistor values? |
FreeTrack Forum > FreeTrack : English Forum > Support : Tracking System > what to do next
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