Articles tagged with Music:

  • Playing music on Arduino

    Provided you connect a piezo speaker to your Arduino board, the tone Arduino function allows to play tones given their frequencies. Let's use it to play entire melodies!

    The Arduino board of my robotic teapot with a piezo sounder

    The Arduino board of my robotic teapot with a piezo sounder

    The melody encoding format I'll use is compact and pretty straightforward, but I admit it isn't the easiest one to read. The melody is represented as a null-terminated string of chars, in which each note is described by 3 consecutive characters:

    1. The note duration in sixteenth notes as an hexadecimal digit between 0 and F (0 has a special meaning and is interpreted as a whole note)
    2. The note name in English notation as an uppercase letter, or lowercase if sharp (R has a special meaning and indicates a rest)
    3. The octave number as a decimal digit, between 0 and 8 (for a rest, the value is ignored)

    So for instance, a quarter-note C from the 5th octave is 4C5, and a eighth-note D sharp from the 4th octave is 2d4.

    With this notation, the Tetris theme is:


    In this example, a piezo passive sounder is connected on pin 3 of the Arduino board. The code to play a melody …