Cree Xlamp Grow-Light Schematic Design (Wanted)

[Weezard]

I like that cake pan design! Looks about the right size for a 3x3 area?

Care to share a parts list/schem?

It's pretty simple really.
let me dig around in my attachments and find my old schematic
<rustle, clunk> Aha!
The LEDs are 4 Ledengin 15W 660nm in the corners.
The center LED is a single Ledengin blue. My next light will use 2 blues.
The LEDs are actually an array on a chip with 2 leads + and -, on a long flexible printed circuit.

I used Arctic silver thermal epoxy to mount them.
Works well if you buff the surface to a shine first and spread it thin.
Also polished the back and used the same epoxy to mount the heatsinks.
LIke B. H. says," it works a treat"
I eventually added a few heatsinks glued to the back and got the average temp down to 90 F.
The fan blows down onto the back of the light and laptop power supplies are ideal for driving the CC regs.
I use one of the regs as a voltage regulator to drive the fan from the 19V. source.
The original design had a PWM dimmer on the blue. but I ended up driving it at max so when the dimmer fried I just jumpered around it.
When I add the second blue, I'll replace the dimmer for internode distance control.

I started stressing about what else a plant needs and got stalled hunting for an exact mix of exotic LEDs.

Finally ran low on meds and said screw perfect!
Next grow I'll add a couple CFLs and see if yeild increases at all.
I suspect it will be wasted watts, but, time will tell.

Used a power connector from a computer hard drive for quick disconnect from both supplies.
Comes in handy.
Wear shades for the smoke test, I did some damage to my eye while measuring current.
I use arrays of 300, 10mm. high output LEDs for vegging and an HGL 14W. kit for clones.
The soil grow was quite good, but this grow, using Bubbaponics is outstanding!

Havin fun yet?
Weezard

Weezard Reviewed by Weezard on 08-25-2008. Cree Xlamp Grow-Light Schematic Design (Wanted) Been sifting through the cruft trying to find a schematic to build a grow lamp, using Xlamp LED's from Cree. Their time is now :) Yes I've seen the extraordinarily overpriced products being offered by businesses. Not worth the money if you can use a soldering kit, imo. I can solder, but I'm no engineer, so, I'm asking for help in creating a circuit design that balances low cost, simplicity of construction and high efficiency. Preferably with 120vac input (off the shelf ac-dc Rating: 5