A Mini USB Keyboard That Isn't A Keyboard | Hackaday
Buy OTraki USB MIDI Cable Converter 2.0 3.0 USB Interface to in-Out MIDI Cord 6.5ft with FTP Processing Chip + 5 PIN DIN Perfect Works for PC Laptop to Professional Piano Keyboard
XO 1.5 USB Keyboard - OLPC
Programmable USB Keyboard Controller IC in a QFN28 chip or DIL28 Module
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