So far, I’ve figured out how to get a single floppy drive to make music. But why play music on one floppy drive when you could play it on eight?
An Arduino Uno with Moppy can drive a maximum of nine drives when connecting directly to the I/O pins. If you have nine drives on hand and an Arduino Uno, it’s simply a matter of connecting the data lines to the Arduino (step, direction, and drive select), and the power lines to a 5V supply.
That’s the simple and messy way. The more complicated, cleaner way is to build dedicated custom power cables that fit the floppy drives, and custom circuit boards to connect to pre-made 34-pin IDC cables.
I prefer the cleaner way, so I decided to build my own floppy power cables.