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

mem October 15, 2009, 1:55am 7

There is a nice library for driving multiple LEDS through switched digital pins here: Arduino Playground - Charlieplex Library

Google 'Charlieplexing' for more about this technique

Topic		Replies	Views
NOOB warning! using 2 pins to turn off and on led General Guidance	12	3679	May 5, 2021
can I connect 2 leds to one output? General Guidance	12	1838	May 5, 2021
can I drive LED's on digital pins? General Electronics	10	4113	May 6, 2021
Two Grounds connecting? Frequently-Asked Questions	3	668	May 6, 2021
2 LED's 1 digital pin General Electronics	21	13856	May 6, 2021