I'd use some of these http://www.ti.com/lit/ds/symlink/tlc5940.pdf
320mA*5V = 1600mW which is less than the power rating for the PDIP version (http://www.sparkfun.com/products/10136 this is PDIP right?)
That means that if I use 2 LEDs(Each requires less than 2.5V of course) instead of 1 for each channel I can decrease the power dissipated
Just an added bonus.The TLC5940 has a supporting library for the arduino.http://code.google.com/p/tlc5940arduino/It makes them super easy to use.
QuoteThat means that if I use 2 LEDs(Each requires less than 2.5V of course) instead of 1 for each channel I can decrease the power dissipated Well, it's true, the problem only red led's fall in this category, may be green produced via old technology (low brightness). Blue require about 3 V, on some occasions up to 4V. If you need more leds, you could increase a voltage and stack 3 leds in series (for 12V) the same way RGB led strip made.
if I do need more power I'll just use 12V
Quoteif I do need more power I'll just use 12VNo you won't.Power and voltage are two different things.
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