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 ...

Morse code can be sent using low power, equipment built from simple materials or even using mirrors or flashlights. Finally, Morse code is a very simple way to do covert communications.

The Magic Morse algorithm is copyrighted, but he has released the Arduino code as open source in an effort to get people using Morse code once again — it is pretty awesome. So how does it work?

While electronics have advanced exponentially since Morse code’s debut, Pavleski’s translator is similarly basic by modern standards—an Arduino Nano microcontroller board, a small LCD screen ...