The Floppotron 3.0 is a musical instrument made from 512 floppy disk drives, 4 scanners, and 16 hard disk drives. It uses custom electronic circuits and firmware to produce music, with each device controlled by a network of microcontrollers. The instrument can play a wide range of sounds, from low-pitched tones to high-pitched notes, and can be controlled via MIDI. The project is a hobbyist endeavor, with the creator aiming to push the boundaries of what is possible with old computer hardware.