Use top octave generator and TTL dividers to produce full set of temporal notes for DIY music keyboards.
Our project is an all-analog keyboard synthesizer like the ones popular in the 1970s.
Piano de Voyage is a portable piano keyboard that travels with you. It is modular and lightweight and connects to any BLE MIDI device.
A 4 line x 32 character Braille display and keyboard for the Blind.
This is a Halloween practical joke "keyboard" that when you play a "ring tone", it mysteriously writes spooky.