This project uses two Arduino to communicate with each other using ... The presentation material and the code can be downloaded at Morse Code Generator and Decoder.

Magic Morse ... code. When he first wrote it, he designed it for a PIC, but since then he has re-written it to use as a training program for the Arduino platform. It can run on the Uno, Nano ...

Once you learn how to read Morse code, you might want to teach your Arduino to understand it, too. Or, you can check out some other Morse-based projects.