Hi all, I'm new to Arduino. Recently, I was playing around with serial communication between 2 Arduino Uno. Basically, I have 2 arduino Unos, each rigged with a multicolor LED and initially setup to flash a different color. The idea is that if the 2 arduino boards are connected through the pins des…

Software Serial Library

lemming March 8, 2012, 7:55am 2

Have you got the grounds of the two boards connected?

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