MIDI Keyboard Controller design for PC soundcard
This is a simple MIDI keyboard designed for use with standard PC soundcard with MIDI/Game connector. Keyboard is powered directly from Game port an there is no need of power supply unit, and no high voltage risk. If you need to use it as standard MIDI device, you should build (or buy) a proper power supply and opto-isolated MIDI output buffer. You could find more information about such buffer module on
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