Calling out to Weezard for LED advice

[mx4intx]

So theyre all mounted.

4 blues (465nm) and 21 reds (3 diff flavors... 625 ( four), 660 (11 of these), and 735 ( 4).

If anyone cares heres the layout from top left

DR R FR DR
R B DR B DR
FR DR DR DR FR
DR B DR B R
DR FR R DR


Now its 115W.

My 4 current limiters (will run off 2 supplies) are mounted on one of the PSU's.

Peace.

Attachment 273138

[Weezard]

Superior!
Elegant even.

I like the way you addressed the V. drop in the wires. :thumbsup:
Gonna mount the P.S. on da heasink and have 'em share a fan?

I'd love to see a camera killing "smoke test" of that beast.
Got any plans for a side by side grow with a different light?

Aloha,
Weeze

[mx4intx]

Superior!
Elegant even.

I like the way you addressed the V. drop in the wires. :thumbsup:
Gonna mount the P.S. on da heasink and have 'em share a fan?

I'd love to see a camera killing "smoke test" of that beast.
Got any plans for a side by side grow with a different light?

Aloha,
Weeze

Thanks man! Couldnt have done it nearly as fast without you and this thread.

I am just using cfl's for now. I had five 42w'ers (actual W - ProLume brand) in my cab. I dont really think they will even come close to being compared with the LEDs...I hope. May leave 1 or 2 there for a) my eyes to see whats going on and b) as supplements.

Not sure about a fan yet. I'd have to drop a 3rd PSU in there.

But deffo there will be a smoke test!! and pics, lol havent heard that in a looong time.

I have some aluminum flashing I plan on screwing to the heatsink as a kind of case. Top may be open though.

Have babysitting tomorrow, might get half a day to work on the light. Should be done by Saturday though.

Got any advice on how far to keep this from the top of the plants? Running the light crippled for a week and the leaves looked to be hiding from the light at 4-5" away.

Everything this last week was cool to the touch. I'll play the fan by ear.

Again, thank you very much.

Peace.

[khyberkitsune]

Looks good! Given that you're using 1w emitters without any focusing lenses, I'd keep it about 9 inches away in veg and about 3-4 inches away in flowering.

[mx4intx]

I did find out that the blues are more tightly focused than any of the reds. Theyre 80 degrees with a total angle of 90 degrees whereas all the reds are 90 with a total angle of 120.

And unless youre talking about the die itself these are all 5w emitters. At 4" (with only 50w) the leaves seem to be curling under.

[Weezard]

5 Watters running at about 3W.
Do try to keep up, Khy.

I suggest 12 to 18 " in veg.
8 - 12" in flower.
Closer will actually stop growth.
Closer still, will bleach them.
I learned that the hard way.

Mahalo nui, brah
Can't tell you how stoked I am to see this.
Means this thread was well worth the effort.
Now somebody's gonna see your build and start to thinkin'.

It goes around, it comes around, and before ya know it good stuff abounds.

Great job.
Let's grow.

Weeze

[khyberkitsune]

Ah, yep, I'm stoned, misread a post above as 1w instead of mW (the lumens post between red and blue)

5w emitters. Are these true single-chip or multi-chip packages?

[mx4intx]

Are these true single-chip or multi-chip packages?

Pretty sure they are single chip. Multichip doesnt start until 10w with ledengin I think. Only ever see two wires going into the die also.

[khyberkitsune]

You'll need a microscope to get a good look inside to tell if it's multi-chip or single-chip.

Have a pic of a 1w Nichia 460nm emitter, multi-chip, and an Osram 660nm single-chip emitter. Note the bonding wires inside of each die area and where they connect. Some single-die emitters use multiple bonding wires for better electrical saturation of the diode, but it should be fairly easy to tell if it's single or multi.

[mx4intx]

Well no microscope so I cant tell. It looks like a single emitter to me. The 10w ledengin LEDs look like they have 4 diff dies. The 5w look like one die.

edit to add: Three hours sleep last night combined with just getting back from babysitting means I probably wont work on the light today. Dont want to screw something up due to being tired.