Quote Originally Posted by redline
OldMac,
Here are a couple of pics of what I am working currently on, whenever I can find the time. It is an anti-brick design. I have moderately high hopes for it but I am really having difficulty finding time to work on it.
The metal work is very labor intensive. My next step is to make the control panel.
Redline,

I reallly like that design, each brick being height adjustable and angle adjustable. Seems it could be the answer to grow taller plants with LEDs.

When I built my LED strips last year, the Red Cree's had a Vf of 2.7v and all where within a tenth of that. So a string of 10 made an easy descion to use 28v power supply. I remember you worked with some LedEngin 660nm reds, do you recall what they actually measured? and how consistent where they?
I'm thinking, just build bigger strips (48" vs 24") with more power, and a mix of reds.
oldmac Reviewed by oldmac on . Building LED lights from facts, no theories I was going to post this at the Perfect LED Grow Light thread, but as some of what im going to post was posted 2 years ago on the stickied thread about LEDs and people still continue developing lights from wrong ideas, i think a thread about this topic is largelly needed. The main problem is related to efficacy of spectrums. When the firsts LED experiments at Overgrow, we work on the hypothesis that blue and red light are more effective. It was an appealing hypothesis that promises large Rating: 5