LED sneek peak

[claynelson]

Sneek peak of my custom LED fixture. i was going to hold out till it was done but ive seen others working on them or interested in doing it. its blurry cuz its only a peak.

http://i792.photobucket.com/albums/yy209/claynelson/002-5.jpg

[fishcop]

What size is it? What type are the LED's? Looking good...

[Kyle]

Unless you have a lot of air movement over those heatsinks you may want to drill holes on the other side of the material you have them attached to. Those heatsinks don't work efficiently unless air can move freely past the fins. I looks like you have them spaced well. Can't wait to see it over your tank.

[claynelson]

the heat sinks are a formality for mouting only. it was cheaper to buy them then have eht plate custom fabricated to take the leds. on this one cooling wont be an issue. that was the first thing i planned out.

its a sneak peak ill give out details when its running. i wasnt even going to post this incase i dont get it going.

[claynelson]

testing starts on sunday. the one pic is of 1 of the 20k leds i wired into the stand to provide light for a pair of clowns and my blue carpet nem.

http://i792.photobucket.com/albums/yy209/claynelson/002-6.jpg


http://i792.photobucket.com/albums/yy209/claynelson/001-11.jpg

[claynelson]

all leds function. i dont have control over them with the profilux though. if anyone has done a DIY led system with profilux control please PM me.

[Myka]

Am I counting 40 LEDs? Or are those nubbins screws? Lol

[fishcop]

I would think it is 10 LEDs?

[Reefgoat]

I like your use of the individual heatsinks. What kind of driver is that? With the LEDs spread so far apart are you going to be using optics?

[nater3]

What current are you planning on running these at?
I have 14 cree xp-gs running at 600mA on a 10"x16" piece of 1/8" aluminum.
They are epoxied on with arctic alumina thermal epoxy.
The heatsink is body temperature after running a full day.

I don't think you should have any trouble keeping yours cool enough.

[Kyle]

They look like 10 10w or 20w LEDs, one big power supply, and individual drivers for each led.

[claynelson]

there are 10 led's each running about 10.5v at 1.35 amps. there are mosfets to control the brightness of the leds at a pattern on the panel. the centre leds are 20k white the other 8 are 455nm royal blue. you do not look directly at theses lamps i found out the hard way and was partially blind for about 30 min.

problem is im not sure on the profilux LEDcontrol4passive controls or if i have my fets in wrong. i will be doing more testing and work monday and tuseday then the project goes back to the shelf.

that "driver" is a 12v29A power supply.

[Richy]

May I ask what your budget is for this setup?

I am considering building one for my tank. Just at the initial stages of research..I am watching closely..:yes:

Thanks

Rick..

[claynelson]

about 300 total. if i cant get it working for that ill go AI or radion

[Richy]

Thanks

Rick..

[nater3]

I have what may be a dumb question. What are you using to limit the current?
Forgive my VERY basic understanding of electronics.
Will the LEDs draw more current as they warm up?

I use a constant current driver in my DIY setup but I'd like to do something like yours using FETs and an arduino.

[claynelson]

im using a current limiting resistor thats it. as they warm up they will pull a bit more but thats only in the first few seconds of start up.

[claynelson]

LED's are fully functional. just working on a mount design.