[sdiy] Calculator Synth

[harry]

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"