[1] It is made of a synchronized array of partially obsolete computer hardware programmed to play tunes.
[3] The invention gained public notoriety with a demonstration of the Imperial March posted on YouTube achieving more than 6 million views.
Scanners and floppy drives use stepper motors to move the head with sensors which scan an image or perform read/write operations on a magnetic disk.
The sound generated by a motor depends on its driving speed: the higher the frequency, the greater the pitch.
[5] The Floppotron translates MIDI music files into a series of discrete commands telling the devices when to buzz, click, and remain silent.