You can see the project in operation in the video below. Once you learn how to read Morse code, you might want to teach your Arduino to understand it, too.

An Arduino running Morse code converter software controls the boost convert and LED. [Yannick] uses his computer to send a message over the Arduino’s serial link, and the light does the rest ...

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 ...

For Arduino beginners like us, this is where you paste the code from other people's projects. When you send the code to the Arduino from your computer, the code is stored on the Arduino itself.