I've tried the Blink example and noticed that my LED barely lit with a 220k ohm. Then I calculated the resistance that should be used for my circuit: 5mm Red LED - 2.6V max. forward voltage, 28mA max forward current I'm using the 5V power port on the arduino uno. Olm's Law: R=V/I R=(5 volt-2.6 v…

Correct Resistor for maximum light output on Red LED

encryptor November 10, 2012, 1:42am 15

good to know. ignore dhenry

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