The keyboard [JenShen] used was a simple Casio keyboard with built-in voices ... the keyboard matrix with an Arduino and generate MIDI notes and send them to other synths. In the video after ...
[adriangin] wanted to control the synthesizer over MIDI, but their Casio keyboard only had MIDI over USB available. To get around this, [adriangin] set out to add a standard MIDI Out port to the ...