I originally ordered a bunch of prewired 5mm ultra bright LEDs that had resistors already soldered in place to run off a 12V DC power source. I was going to make four sets each of a different color ie: 10 white spots, 10 green ones, 10 blue ones, and 10 violet ones. They were going to be set up for …

LED Spotlight control

system July 6, 2011, 1:55am 3

So to I connect to both the Arduino GND and the 12 V DC power converter GND?

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