DIY LEDs - The write-up

Status
Not open for further replies.
Kcress- That's pretty cool. It would be really fun to see it in action. What were you going to use it for? Also, what are the bands with a hole in the end for?

troylee- Looks like fun. I would be surprised if it actually consumes 1000w of power, to me it looks like that's just the model name. My line of reasoning is if I'm not mistaken, at the bottom of the page he's saying that his 21w HID is brighter...
 
I was thinking the same thing... if that was really 1000 watts worth of LEDs it would have to be sooo much brighter than the 21w HID. But still awesome.
 
i saw in the xenon thread someone posted a 100w 15k led......where can i find these????? im sure it's in this thread but i skipped around and can't find it.......i work at a lighting and sign company and have played with led's alot but that thing looked sick i want one.....i actually set up my moonlight's with r.g.b. which allows me to dial in the colors and temps via. a dmx controller from boca flasher that i stripped from a sign lol.....
 
I recall what youre talking about, I think it was the Edison Opto 100w "LED". or it might have been one of the OSRAM 100w street lamps...

These are actually not "100w leds", they are a bunch of separate LED dies packed into a really small space. thats a case where something like water cooling might start to make more sense.


http://www.led-professional.com/content/view/464/56/

no idea where you can get them, I looked too any found nothing. maybe its only available overseas or through special suppliers?
 
ya thats the one.....same here can't find them anywhere......there is a guy i forgot his name but he has one and some blue 15w around it.....pretty sick looking.....
 
Kind of makes you wonder if they're soon to replace halides -

It's got ~the same efficiency, potential to tailor the spectrum, is a single point-source lamp, is very close to halide price, and it'll basically never burn out so it's a huge money saver...

In fact I'm sure that if it did come in a bluer spectrum, early adopters here at RC would have already replaced their halides with it. Then after the early adopters show they work great, the landslide comes...
 
Last edited:
ya thats it..... i see my 220 would get really expensive to light being i think i would need at least 8 of them.......but it would be a good project for the aqua pod....:)
 
<a href=showthread.php?s=&postid=14785046#post14785046 target=_blank>Originally posted</a> by widmer
Kcress- What were you going to use it for? Also, what are the bands with a hole in the end for?
Click to expand...


It was used in a commercial art luminary.

Mounting the unit. Since the material was already there I just made lots of mounting points.
 
Too bad there just isn't a feasible lens combination for the luxeon rebel royal blue LEDs to project a ~10deg beam. Because otherwise these have the absolute best amount of light produced per $ (if I understand the conversion correctly, see below).

http://www.luxeonstar.com/luxeon-rebel-led-royal-blue-lambertian-525mw-700ma-p-162.php

But once I couple them with the $5+, 6degree lens and the mounting plate, they're more than $10/LED which is a little outside of my price range.

I'd love to know if I could attach these lenses to them:
http://www.dealextreme.com/details.dx/sku.1920

But with such tiny scale optics, it would most likely prove to be impossible.

BTW can anyone confirm my understanding of how to convert "mW lumens" to lumens for comparison reasons?

As far as I can tell it's just 683*(mW designation in units of W)

ie the 525 mW lumen LED will be 683*.525=359 lumens?
 
Windmer something to consider is the Rebel LEDs by themselves are TINY!! 3mm x 4mm wide... look even smaller in person. they definitely require experience with reflow soldering and some kind of hot air station... though there is a guide on reflow soldering with a toaster oven... sounds tricky

http://www.instructables.com/id/Toaster-Oven-Reflow-Soldering-BGA/

For some reason Endor doesn't do the Royal Blue TriStars

These III Stars do 340 mW for $6.82.... Its not as much light/$ as the rebels, but you dont have to reflow, and your optics would be simpler.

http://www.luxeonstar.com/luxeon-iii-star-led-royal-blue-lambertian-340-mw-700ma-p-286.php
 
I'm pretty sure manufacturer specs determine lumens per watt. Look online for data sheets for the LEDs you plan on using. Cree has all of their information in PDF form on their site.
 
the luxeons only give mW for their royal blues because for some reason lumens dont mean much with such a blue light... I am curious about the correct way to "equate" the two as well....
 
Random thoughts:

I'd recommend springing for dimmable controllers. I have the AquaIllumination fixtures and like them. But I had to turn down the whites to 65% and have the blues at 98%. (was getting bleaching with higher light)

I wish they were 1:1 blue:white instead of 1:2. Blue makes things look cool in my opinion! brings out lots of color.

I'd think those single dies with a bunch of LEDs packed in them would have the disadvantage of more heat in one location (I haven't read if that's true!). Individual LEDs which are more widely spaced out may give more coverage, making sure your whole tank is lit. Unless there's some kind of parabolic reflector or something I haven't considered.
 
zachtos, you were working on a tri-star where you had 3 x the led's as the solaris? would by tripling the LED's in the same space as solaris mean necessarily more PAR?
Or would it be better to make the optics more closer focused on the edge of the led array, adn the leds near the center to be widely focused?? If you picture what I am imagining its a way to make the PAR more consistent and increasing it by making some areas more tighter.
 
is there a certain PAR # i am aiming for if I want maximum growth on SPS? And is there a PAR you hit where your coral start bleaching? I know this depends on distance and depth, etc. But I am referring to making a unit the same size as solaris / AI that would provide more power that SPS needs.
 
MY pink birdsnest SPS and hammer coral and coralline algae bleach above 60% on the AI fixture. I series solaris owners also mention turning down the output. I don't know if any feel they need MORE power, but I'm not a coral or LED expert....
 
Status
Not open for further replies.

Similar threads

K
Radion time help. (Long post)
Replies
2
Views
138
kj swans
K
sickman
Juwel Lido 200 - really reef tank ready all in one? Really Really?
2
Replies
39
Views
981
Reefing102
Reefing102
S
Re: bean animal help!
Replies
2
Views
173
wvned
wvned
A
How to Install Linear Actuators for Easy Lifting of Your Reef Tank SPS Light
Replies
4
Views
2K
oreo57
oreo57
D
DIY Stand Help
Replies
6
Views
410
kharmaguru
kharmaguru
Back
Top