Musical Fractions is a device that will help children learn how to subdivide rhythm in music. The device is made up of several modules, together with a “play” button and speaker. Each module corresponds to a single note. Users place a note block of their choice in each module, then add weights in front of the note block to determine the length of time the note will play for. More weight equals more time. When the user has set up all the note blocks and weights as they like, they hit the play button and the notes play from left to right.
The current development of the prototype for this concept has focused on developing a single module. Users can choose between four different notes, and add weights to the pressure sensor. Activating the play button will play the note.
The note block is registered through determining which button has been activated. The placement area has four different buttons wired to it, and the copper tape on the bottom of the note block creates a connection that activates one of these buttons.
When the play button is activated, the Arduino sends the note name and the pressure reading to the serial monitor.
This is read by the Processing instance, which separates the string into the note name and reading, and plays the correct sound file.
