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FreeTrack Forum > FreeTrack : English Forum > Support : Tracking System > Building a clip and need some help

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servili007	#1 21/08/2008 - 18h35 Top
Class : Apprenti Posts : 24 Registered on : 21/08/2008 Off line	I am building my own clip, as professionally as I can. I'm ordering 6 SFH 485 P (in case i mess up :D) off of digikey (unless any of you suggest otherwise) and will be powering the setup using a AAA battery. If i Want to set up the circuit in series, what resistor should i use. I'm really looking forward to this, all help is GREATLY appreciated. digikey page- http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=475-1470-ND Edited by servili007 on 21/08/2008 at 19h01.
tristan68	#2 21/08/2008 - 19h25 Top
Class : Electronicien en chef Posts : 651 Registered on : 10/07/2007 Off line	hello servili007 , and welcome. You said you wat to power your setting with AAA batteries, that's ok if you use at least 2 of them (that's 3v if using classic batteries or 2.4v if using NiCad or Nimh rechargeable batteries). If you use only 1 battery, the power supply voltage will be too low for the led to operate properly. Just tell how much batteries you plan to use , and if you plan to mod your webcam or let it unmodded, and i'll be glad to help. cya
marcusw	#3 21/08/2008 - 19h26 Top
Class : Habitué Posts : 150 Registered on : 17/04/2008 Off line Www	you won't be able to use a single aaa to power 3 485p's in a series. they operate at a foward current of 1.5 volts. A series circuit will need 4.5 volts. Your best bet is 2 aaa's with a parallel circuit using 51 ohms resistors. A resistor for each led. Thats just off the top of my head, but you can use the led wizard to verify that. Marcus The only way to fly!!!
servili007	#4 22/08/2008 - 02h11 Top
Class : Apprenti Posts : 24 Registered on : 21/08/2008 Off line	my cam is a creative NX with filter removed and floppy disk layer over it. If i can't work out 1 AAA, what setup would i need to run it using USB?
tristan68	#5 22/08/2008 - 08h47 Top
Class : Electronicien en chef Posts : 651 Registered on : 10/07/2007 Off line	Hello servili007 Since your webcam is IR modded, you won't use much current. Lets say we'll power your leds at about 30mA. If you use a 3v setup (2x batteries) : Parallel setup, using 3x 51 ohms resistors. If you use an USB powered setup : Serial setup, using a 18 ohms resistor. I usually don't recommend using USB power for the following reasons : - If you make an error in building your setup, you can easily fry your USB ports on your PC motherboard. - To correctly protect your motherboard , you should add a PTC fuse in your setup. Most people have problems finding them. cya
servili007	#6 24/08/2008 - 03h09 Top
Class : Apprenti Posts : 24 Registered on : 21/08/2008 Off line	Finished! i ran to radioshack instead and bought 3 IR Leds and set em up using a USB cable, im pretty proficient in electronics just needed to refresh, anyway its working pretty good but it seems like this cam needs more than 30 mA cause its seems to break up the blobs too fast, any correction for this? also, i have a wiimote that im waiting to use 2.2 with :D, will this current setup work perfectly with it? pics- http://i11.photobucket.com/albums/a180/seargent007/DSCN2347.jpg http://i11.photobucket.com/albums/a180/seargent007/DSCN2346.jpg made from parts of an old altec lansing headset, feel free to post these pics in the gallery. Edited by servili007 on 24/08/2008 at 03h22.
tristan68	#7 24/08/2008 - 09h31 Top
Class : Electronicien en chef Posts : 651 Registered on : 10/07/2007 Off line	Hello Servili007 using a USB cable Your choice. Just be careful and don't make mistakes , ok ? it seems like this cam needs more than 30 mA Nope. The Radioshacks leds are 29mA Leds (if my memory doesn't fail), so about 30 mA is their max power. Try to play with your LV filter (removing the floppy and putting a piece of radiographic sheet instead). its seems to break up the blobs Sorry I don't understand this sentence (I'm french), can you explain please ? thank you. cya
servili007	#8 24/08/2008 - 21h44 Top
Class : Apprenti Posts : 24 Registered on : 21/08/2008 Off line	well these LEDS are rated 100 max, the usb wiring is all good as i've been testing it and the finished product works fine by blobs i mean the lights become so dim that the program reads it as more than 1 light. edit- i removed my floppy disk filter and now it works perfect! so happy Edited by servili007 on 24/08/2008 at 23h31.

FreeTrack Forum > FreeTrack : English Forum > Support : Tracking System > Building a clip and need some help

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