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 premade 34-pin IDC cables.
I prefer the cleaner way, so I decided to build my own floppy power cables.