You can read the state of a button using Arduino and a few lines of code. The actual state is shown in the Serial Monitor window as 0 or 1, 0 meaning the ...

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.

To compile an Arduino sketch, codebender uses clang a wonderful compiler that will give you extremely descriptive warnings on terrible code.