I bought an Arduino Mega and would like to try sending data to an Uno via RX1/TX1 Pins on the Mega. Is there an example I can use to do this?

How to send text/integers over serial lines on Mega2560?

J-M-L November 14, 2021, 12:42pm 6

and make sure both devices share the same GND (connect the GND as well as Rx and Tx)

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