Hi All,

Today I went looking for some Midi circuits, I was curious to see
if the Web had any to offer.  I found the following sites that offer
kits and then I found some sites that have diagrams.

KS MIDI Retro Kits: Keyboard Systems Midi Retro kits: "Add MIDI
capability to any DC Keyed organ".  This kit takes a key that is
pressed and turns it into a MIDI signal.  This board could be used to
interface a player piano reader to a computer.

    http://www.systemsinfo.com/midi-AG.html

PAiA Electronics: Since 1967 PAiA Electronics has
worked with leading magazines to provide low cost,
high quality, user assembled kits.

    http://209.52.185.39/index.htm

Music Machines Do-it-Yourself Schematics

    http://machines.hyperreal.org/categories/DIY/schematics/

Bluebear Enterprises audio technology.
Midi Software-Sythesizers-Circuits

    http://www.bluebear.freeserve.co.uk/index.html

Make Your Own Midi Interface

    http://www.borg.com/~jglatt/tech/pc_intfc.htm

John Conrad Kleinbauer

 [ A wealth of MIDI resources are available on the last website
 [ listed.  Start browsing at:  http://www.borg.com/~jglatt/