Electronic Organ (like Hammond or Moog)

[Pimens]

Hi, I know it's a big project, but i believe that it would be the same circuit for each note, just changing some cap or resistance to change the note, but is there any schematic on the web to make an electronic organ?

[toneman]

there are *lots* of Hammond sites.
did U google?
Hammonds used "tone wheels"---mechanical oscillator wheels.
other "electronic" organs use TopOctaveDividor chips.
TOD chips are getting, actually *are*, rare and *if* U find them: expensive.
PAIA's old Orguanta & Strings&Things used TODs & 3octave keyboard.
google around.......
T

[robbiemcm]

There are ones where you just connect a 9v battery, touch a wire to a copper trace and you get a sound. They aren't very exact and sound like crap anyway. You're pretty much looking for a better made, more exact, larger range, louder output version of that.

[puretube]

there once was an IC (some 25 years ago) :
SAA1900
complete organ/keyboard in a chip...

(I layouted a PCB for an SAA1900-based synth back then,
but I couldn`t afford the chip...  - probably obsolete now - ).  :cry:

[Dji]

If you want to build monophonic synth (the only MOOG I ever played was like that) try http://www.musicfromouterspace.com/analogsynth/SOUNDLABMINISYNTH/soundlab.html. It's really (at least) two separate projects: the soundlab synth and a keyboard controller: http://www.musicfromouterspace.com/analogsynth/matrix_keyboard_may2004/matrix_keyboard_may2004.html.

I'm building the synth now, and the board is great. All of the part numbers are printed on the board, for instance.

It'll be a while before I finish it since I need to put in a part order, but I'll post  an OT build report when I'm done.