[sdiy] Calculator Synth

[Dr Strangelove]

If you made the sound source onboard and made the keyboard output a 1v/Oct 
control source then would you be able to have a small power source that 
would fit inside the little device that would still be stable enough to keep 
your osc(s) tracking?, maybe they'd only have to track an octave or so.

I've been powering oscs and filters on proto-boards from battery power 
supplies.  They do oscillate and filter like they should but they don't seem 
super stable (filter cutoff affects Osc tuning sometimes, if I haven't 
changed the batteries, etc).

It's really a tough call but, over all, my ideal of a "Pocket Calculator" 
Synth should be as close to completely self contained as possible.  It's a 
funny thing but I think my DR-110 Drum Machine is useful mostly because I 
can just take it anywhere and play it with batteries, through headphones.

         -=<Jonathan Pratt>=-
       (Phdinfunk at hotmail.com)




>From: harry <harrybissell at prodigy.net>
>To: Prototek <prototek at optonline.net>
>CC: Dr Strangelove <phdinfunk at hotmail.com>, synth-diy at dropmix.xs4all.nl
>Subject: Re: [sdiy] Calculator Synth
>Date: Mon, 13 Aug 2001 23:28:37 -0400
>
>Most of these keypads have a matrix output... so there are row and
>column
>traces... like a 3 x 4 line array for a 12 position keypad. This is very
>common.
>
>You will have to decode this with some scanning system. Its not really
>very
>hard to do... but what output do you want from the keypad ??? CV... MIDI
>???
>
>Is the sound to be onboard, or is this a controller ???
>
>H^) harry
>
>Prototek wrote:
>
> >    Great suggestions by Dr. Strangelove. I was just browsing through
> > the Digi-Key catalog I received today and spotted some really sweet
> > looking keypads. If you have catalog number "TO12," then go to pages
> > 523 and 524. Does anyone know if any of these would work? I guess the
> > main question is, how would I get those keys to trigger the sounds?
> > I've never worked in the realm of keypads and the like so I welcome
> > any guidance/ideas.
> >
> >                            keep computing,
> >                            proto
> > ------
> > "By pressing down a special key it plays a little melody."
> > Kraftwerk, "Pocket Calculator"
>


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