Oh lol.. If I was I'd probably buy one made and save myself the trouble :P.
Right now I'm planning on buying the "stars" and using my 19.5v laptop charger as the power source. (120v is kinda bad for leds) I'm going to string 6 in a series, and according to the smart peoples' calculations, I'm going to need a 2 ohm 1.25w+ resistor (went to radioshack and no dice) I'm also kinda short on money, and I want to make a rimless ada type cube before I leave for college. I'm thinking maybe 1-2 strings for my 10 gallon (6-12leds) or 2-4 for the cube (12-24) This is going to get pretty expensive (on my budget) since each q5 costs around 4.50, and each r2 costs around 5.50. multiply by 24 and you're out a 100$ already. I can either use the simple resistor method, or somehow figure how what this diagram means :P.
The new stuff!! Constant Current Source #1
Do you know stuff like surefire flashlights (cops use those tiny really really bright flash lights?) Those use luxeon or cree leds, and I wanna put 12 of em on my 10 gallon.. The problem is I want to stay in medium light range (no co2
) but there is no recorded way to measure it. Watts is pretty faulty. Lumens aren't really what help plants (it measures the brightness to humans) People are using something called PAR, which supposedly is expensive to measure, (measures the amount of light in the plant's absorbtion spectrum), and I think I'll just need to guess/check. Also eventually I might add some of those like .1v leds to try to get a nice colored light. (red and blue)