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MIDI Drum Machine
Main Page
Circuit Board Layout
MIDI Protocol Details

Midi Port Schematic

schematic diagram

This is the circuit suggested by the MIDI specification.

or skip to the firmware.



  Note: the new board will change the PC-900 to a 6N139, which is less expensive and more readily available.

The MIDI Drum Machine, Paul Stoffregen and Rod Seely.
Designed and constructed Fall, 1991. Project status: Complete.
Last updated: February 24, 2005
-- These drum-machine web pages are still under construction --
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