LED board design time

[Walterwhite]

Well I picked up my LED's and I've been working on board design, what do you guys think? Any suggestions?

Board will be 24x12, 60 total watts and 4040 total lumens, with a 140* viewing angel on all LED's. How should this light perform? Is there ANY chance it would be enough to grow a 4'x2' DWC 32 site setup?

Red
[FONT=Arial, Helvetica, sans-serif]1 watt each for 52 total watts
620nm- 630nm
70 Lumens each (3640 total)
140* viewing angle
[/FONT]
Blue
[FONT=Arial, Helvetica, sans-serif]1 watt each for 8 watt
460nm- 470nm[/FONT]
50 lumens each (400 lumens)
140* viewing angle

Any input is appreciated
Thanks

 

[Jakabok Botch]

keep it up....i tried askin same questions a long time ago.....all i got was "its too hard" so ill be around to see how it goes....i used to have good site for cheap 4 watt leds....if i run into it ill post it

 

[Beansly]

I'd also like to see you put this thing together man. Try and document it if you can, ill be subbd. I don't know if you'll get to much help on technical shit tlke that here but maybe I'm wrong.

 

[potpimp]

Just my two cents but I do have experience with LEDs. The blue is better suited for vegging and the red for flowering. My question: why mix them? Why not just make one of each?

 

[Walterwhite]

Just my two cents but I do have experience with LEDs. The blue is better suited for vegging and the red for flowering. My question: why mix them? Why not just make one of each?

I just tried to have a similar ratio to lots of the retail lights and if I had one board for flowering and one for veg it would double my cost because I would have to make twice as many boards. My total cost so far is around $50 for the LED's and heat sinks, I will still need to buy materials to make the board as well 1 or 2 computer case fans for cooling,AC adapter and a few other things.

 

[jonhyweed]

Love to know who that board will work out for you, planning growing with led also. Attached to a solarpanel will make it a complete green packages

 

[PetFlora]

My experience with LED is several grows using a UFO 90. It has similar R/B ratios as your design.

Grows are decent, but nothing to write home about (~0.5 oz dry). I would say vg for vegg/clones, but not finishing as actual coverage is < 2 X 2, so you can only grow small plant(s); plural if small cola phenotypes, and then only 2-3.

To get a decent yield (~1oz) you need ~ 200 LED watts, which would be a bigger fixture and provide bigger foot print.

With your budget, consider configuring it for vegging only, then supplement with CFL for flowering. You can get 150-300 watt equivalent CFLs at Lowes for < $20. But if you are determined to grow/flower with this LED design, then...

You need actinic blue (420) more than 460-470, + 3-4 green (500) to super charge chlorophyll A/B production. Don't believe me? See GSL website for details. This combination will max out your veg stage = more bud sites!

You don't need as much red as blue (~40:60). AND, put the red on a separate grid with it's own on/off switch, so you can introduce it when you get ready to flower. Red during veg is counter productive to growth.

IMO, that would be a killer LED

hth

 

[Walterwhite]

Petflora - That's interesting about the green LED's, if what you say is true (im not doubting you) then I'm surprised more companies wouldn't use green LED's with their boards. What do you think about orange LED's as far as "plant health". If I wanted to cover a 4x2 area I could make the board bigger add a few more LED's and then put a CFL at each corner and one in the middle?

What is everyone's opinion on adding a few UV led lights, from what some people have said UV lights turned on for 1/2 hour to a hour a day will increase potency.

And what would be better 300 1 watt LED's or 100 3 watt LED's

The included heat sinks in the picture would those be good enough and then mount them all to sheet metal, or would I need an additional heat sink to mount to if I'm using 1 watters.