Quote:
Originally Posted by Signet
Would we achieve the same effect by controlling each color with a relay, or with a motor controller (to achieve a fading effect)?
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If controlled by a relay, the strip can only have RGB channels in the full on or full off state, which would give you limited colors and no fading.
With a motor controller (or MOSFET) you get the full range of output from every RGB channel, this gives you thousands of colors and the ability to 'fade' the strip.
The bildr post I linked explains how to do this with a MOSFET and a PWM signal from the arduino.