Two part question: Sparkfun has the following piranha style RGB LED LED - RGB Piranha 5mm (10 pack) - COM-10390 - SparkFun Electronics These are common cathode and the forward voltages at 20mA are: Red 2.2v Green 3.3v Blue 3.3v From this, I assume that I don't need a resistor on any leg but th…

RGB LED question

system March 23, 2012, 2:54pm 4

Awesome link Mike. Thanks for that. I know how to proceed now.

And the tip on using the 595.

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