Ok, so I have put together a 2 minute countdown timer using an Arduino Uno, Max7221, and a 4 digit 7 segment LED display (also has periods and a colon). However I can't figure out how to make the colon light up. Any suggestions? #include <LedControl.h> //We cant do anything without importing a suit…

Colon on 4 digit 7 segment display

system May 17, 2011, 2:17am 2

What display are you using?

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