> Easy build setup with SFH485P, Anyone can build this ! (for 5v Usb serial build see Page 2)
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stuntkojima |
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Class : Apprenti
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Registered on : 15/11/2014
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Steph |
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Registered on : 16/11/2007
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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.
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stuntkojima |
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I want to use 2x1.5 Volt batteries like in the first post. (PARALLEL BUILD)
Thanks for helping me.
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Steph |
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...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.
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MadJiitensha |
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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.
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Steph |
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MadJiitensha |
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Aye
IR EMITTER, 5MM, 880NM
Peak Wavelength:880nm
Forward Current If(AV):100mA
1.5 V
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Steph |
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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.
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MadJiitensha |
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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
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Steph |
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You're sure that the LEDs are working. Did you check it with no filter at all?
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MadJiitensha |
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yes i check them on couple cameras...
I think best will be to use normal visible diods...
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Steph |
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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 |
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MadJiitensha |
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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
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askal |
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Registered on : 16/04/2015
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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?
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Steph |
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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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