[sdiy] portable monophonic synth ideas

Pete Hartman pete.hartman at gmail.com
Mon Sep 2 07:50:41 CEST 2013

The various MFOS Mini-Synth options seem like they could work well,
you might want to add a MIDI 2 CV adapter (there are some very small
ones that I have heard work well), and then you can use any small MIDI
capable keyboard for it....

I was able to fit the Mini Synth Plus (basically a Mini Synth + a
Sample & Hold) into a cigar box, and definitely battery powered (needs
two to be biploar though).

Not sure about driving headphones, that may require an additional
circuit as well.

I think there's probably some question of how well do you want the
VCOs to track etc as well.  I have had little trouble with mine, but
Ray makes a point that they are not expected to be "good" at tracking
V/Oct....  And I'm not doing anything especially demanding with it.

On Mon, Sep 2, 2013 at 12:08 AM, Elain Klopke <functionofform at gmail.com> wrote:
> hey all,
> I'm looking around for ideas on how to go about building a small,
> preferably battery powered, monophonic analog synth. Something that
> will be able to be played in the studio, on stage, and in the break
> room during lunch (headphones most likely).
> I have a 25-key keybed minus the PCB with the contacts, a MFOS VCO
> board, ADSR board, and somewhere a built sate variable VCF and dual
> VCA.... but those boards are kinda big in the grand scheme of needing
> more modules still and wanting portability.
> Also, any clues on how to do a compact keyboard scanning matrix
> that'll output control voltages?
> Thanks in advance for any clues and ideas,
> -Ian
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