can you wire up an led to 2 digital pins instead of digital and then ground. So if you hook up positive to digital pin 13 and negative to digital pin 12. can you set both digital pins as outputs then set 13 to high and 12 to low and the led would turn on. This would allow for more complex led multi…

LED's Digital outputs

system October 15, 2009, 1:20am 2

Yes, you can, as long as you have a current limiting resistor in one of the legs. As you note, that is one way to multiplex an LED matrix.

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