[Rostislav Persion] wrote a simple Morse Code decoder to run on his Arduino and display the text on an LCD shield. This is probably the simplest decoder possible, and thus its logic is pretty strai… ...

This project uses two Arduino to communicate with each other using light by means of Morse Code. As a more advanced project, it has some complex array usage and investigates converting switch inputs ...

When I was a wee lad, I remember doing CW decoding with an LM567 tone decoder chip, and writing code in BASIC on a 8088 PC clone to monitor the output of the IC and print text to the screen.