I just interfaced an RGB LED with the arduino, and I have some questions. The specs of the LED state the following voltages for each color: red: 1,7V green: 2,2V blue: 3V I=20 mA given the 5V output of the arduino output pins, what resistor would I have to but between the output pin and the LE…

RGB LED, voltages, diffuser, color correctness

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