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FreeTrack Forum > FreeTrack : English Forum > Support : Tracking System > Easy build setup with SFH485P
stuntkojima | #226 15/11/2014 - 19h00 |
Class : Apprenti Off line |
Hey.
I just wanna check if this are the right parts before I order them. IR Led: www.conrad.at/ce/de/product/153831/IR-Emitter-880-nm-40-5-mm-radial-bedrahtet-Osram-Components-SFH-485-P Resistors: http://www.conrad.at/ce/de/product/1089708/Metallschicht-Widerstand-30-axial-bedrahtet-0207-025-W-Royalohm-MF0W4FF300JA20-1-St Thanks! |
Steph | #227 15/11/2014 - 19h23 |
Class : Moderator Off line |
Hi,
is it for 5V source? Go for some 6,10,18 Ohm also, it's just some cents and you can try other values too. You need 10 Ohm for 5V. |
stuntkojima | #228 15/11/2014 - 19h31 |
Class : Apprenti Off line |
I want to use 2x1.5 Volt batteries like in the first post. (PARALLEL BUILD)
Thanks for helping me. |
Steph | #229 17/11/2014 - 14h55 |
Class : Moderator Off line |
...then it's ok, go for 30Ohm.
Take the other resistors too (18, 22Ohm for battery build and 6, 10, 18 for charger build), in case you want to go for a charger build later. You will see that battery do not last very long. |
MadJiitensha | #230 08/01/2015 - 04h54 |
Class : Apprenti Off line |
Hi all!.
Well ive made my facetrack but i got 2 problems. 1. Theres other method to create visible light filter? I mean i dont have floppy disk, and move tape will be hard to get, i was saw a guy whos use a black foil used to trash. someone do it like that? 2. Most iportant. My set use 9v battery and i use 120Ohm resistor, i think its to big value, from calculations minimum should be something like 62omh, so what wil be the best? What you think about it? I ask cuz i cant find answers here. |
Steph | #231 08/01/2015 - 16h25 |
Class : Moderator Off line |
Hi,
1. Other Filter solutions: http://forum.free-track.net/index.php?showtopic=3510&page=1#18022 http://forum.free-track.net/index.php?showtopic=3372&message=17808 2. Do you have the specs from your LEDs? |
MadJiitensha | #232 09/01/2015 - 16h04 |
Class : Apprenti Off line |
Aye
IR EMITTER, 5MM, 880NM Peak Wavelength:880nm Forward Current If(AV):100mA 1.5 V |
Steph | #233 10/01/2015 - 12h47 |
Class : Moderator Off line |
Hi again,
go for a serial assembly with three LEDs. Led 1,5V - 80 mA 9V battery R = ( 9 – 3 * 1,5 ) / 0,08 = 56.25 ohms P = 56.25 * 0,08 * 0,08 = 0.36W You need one 56 Ohm resistor. Take care to choose a 0.5W, a 0.25W will heat to much. |
MadJiitensha | #234 15/01/2015 - 00h21 |
Class : Apprenti Off line |
guhh. i was try with Filter, and i fail all the time XD.
RGB filter fail dunno why, but my PS3 dont see any diod. Black foil same. I will try with scoth type. but... im not sure it will help. Problem is that i cannot find nothing like floppy disc etc :C |
Steph | #235 15/01/2015 - 10h25 |
Class : Moderator Off line |
You're sure that the LEDs are working. Did you check it with no filter at all?
|
MadJiitensha | #236 15/01/2015 - 22h53 |
Class : Apprenti Off line |
yes i check them on couple cameras...
I think best will be to use normal visible diods... |
Steph | #237 16/01/2015 - 19h52 |
Class : Moderator Off line |
The ir-filter of your PS3 is too strong or the LEDs are not bright enough.
Check if you can modify the PS3. http://forum.free-track.net/index.php?showtopic=2816 |
MadJiitensha | #238 23/01/2015 - 02h29 |
Class : Apprenti Off line |
Yep i did it, it help, but not enough, i think cuz i seat far from camera, and gush... still no filter. SO! i bought 10mm diodes 3.4v 20mA. Now i need find solution on 12v supply voltage. :v ughhhh
|
askal | #239 16/04/2015 - 06h27 |
Class : Apprenti Off line |
Hi, thank you very much for the information in this thread. I just wanted to post here, as it seems active, to make sure I have things planned correctly because I'm no good at understanding electronics.
I'm planning to make a 3-point cap in serial using SFH485Ps. I have an old cell phone charger with an output of 5V, 0.7A I'd like to use. Here's what the site's LED Assembly Wizard says, does this seem correct? |
Steph | #240 18/04/2015 - 15h56 |
Class : Moderator Off line |
Hi,
can you say what kind of charger it is? Is it a switched mode power supply or a unregulated power supply? The older ones are mostly bigger and heavier, due to the transformer and the regulated switched mode power supply are fine and light (most usb-charger are switched mode supply). If it's an older one the 20 Ohm resistor is okay. Take a 10 Ohm for usb charger. |
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