He’s hooked up an old floppy drive to a Raspberry Pi which reads the disk insertion events and then looks to see what the volume label is: the volume labels are letters or special keys like SHIFT. These are then sent to a Teensy LC which converts the signals into proper keystrokes which it then sends to a host PC. It’s completely batty, but I love it! Talk about whimsical 🙂 You can see it in action below:
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