I'd like to be able to turn on 3 different LEDs from my raspberry pi. Due to limited space on my perf board, I'd like to ground all 3 of them through the same current limiting resistor. My plan is to use pins 16,20,21 for the anodes and connect the cathodes through a single resistor to the nearby ground pin. Will that work ok? Assuming I'm only passing 5ma on each one, 15ma (.05W) through the single resistor should be fine?
Would one turning on affect the brightness of one that was already on?
Would one turning on affect the brightness of one that was already on?
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