225W LED Fixture Build Log

[Shigshwa]

Am I a madman for using 63 LEDs in a 24x11 array for a 40B reef? Maybe. I will have to build this entirely to find out.

The fixture will have an onboard arduino interface, able to control dimming and other settings. Drivers are the Meanwell LDD-Hs.

Here is the list of all LEDs that I'm using for this fixture, which will have Cree white, cool white, and Royal Blue, and with some Epiled 430nm LEDs:

And the layout of the panel:

I've cut the wood, now I need to drill all of the holes for the lenses.

When this is done, the other wood pieces will be glued together.

 

[Ranjib]

Nice . I look forward to the build.
I am wondering why you went with arduino over say trinket or pi zero, they are chaper and can do wifi as well

 

[Shigshwa]

Nice . I look forward to the build.
I am wondering why you went with arduino over say trinket or pi zero, they are chaper and can do wifi as well

I'm more familiar with Arduino. Even though I'm using a Mega for this, I got my Mega for like 10 bucks, it was on sale.

Maybe in the future, I'll use a Pi for this.

 

[Lingwendil]

Arduino platform and wifi? Try the ESP8266, specifically the Wemos mini D1.




Interesting emitter selection. May I ask why you spaced them all so far apart, rather than clustering them together more closely? Having that many emitters with optics will have some interesting color separation issues unless hung very high, and may give a ton of light spill if you don't have a shroud of some sort around it, depending on optic selection.

Also, curious why you went with epileds versus the semiLEDs offerings.

I'm coincidentally building a little rig that is sort of designed around the footprint of a 40 breeder, but I went with mostly Luxeon for their slightly higher efficiency and more flat thermal response curve...

her's a copy/paste of the description from another thread on reefcentral-
Heatsink- RapidLED 20" premium enclosure

Two clusters of the following emitters each-

1x Citizen CLU028 4000k, 97 CRI neutral white (https://www.digikey.com/short/qt0pp1)
1x Luxeon K16 royal blue (equivalent to 4x luxeon M, or 16x Luxeon ES!)
4x Luxeon Rebel ES true cool blue (470-480nm)
2x Luxeon Rebel ES cyan (one each from rapidLED, one from Steve's, not that it makes much difference)
2x SemiLEDs Hyper violet 3.0 (U70 bin, 415-425nm)
1x Luxeon Rebel lime

Total LED cost is just under $100 or so for both clusters, not factoring in shipping.

The plan so far is to drive most everything at 700mA, and the Citizens at 300mA.

Ignoring the drivers, control, fan, etc, the LEDs themselves on both channels will pull-

Royal blue- 61.6w (700mA, 44v, x2 strings)
White- 22.8w (300mA, 38v, x2 strings)
Blue- 18.3w (700mA, 13.08v, x2 strings)
Cyan- 8.1w (700mA, 11.6v)
Violet- 5.2w (700mA, 14.8v)
Lime- 3.78w (700mA, 5.4v)

All combined is 108w total, and 84.4w will be on the white/royal base colors. White/royal will be on a 48V PSU with LDD-H drivers, everything else will be on a 19V PSU and run off of LDD-L drivers. This is of course assuming everything is running full blast, and it's not likely that I would run everything that high other than a few channels for tuning color. Each color is split out into its own channel, for six channels of adjustment. Should be pretty rad!








Will be interested in seeing how yours goes.