whats the best/cheapest way to drive 20 or 30 common cathode rgb leds with an arduino? Answered
i would like to drive 20 or 30 leds i got on ebay to put in my truck. i already got some code to change the color of the led with pwm using only one potentiometer, but i am not sure how to power the amount i need. it will need to use the 12 volts or so available in my truck.