[sdiy] Buchla-style or Synthi-style touch keyboard

[Fernando de Izuzquiza]

the links:

http://www.cyndustries.com/synapse/synapse.cfm? 
pc=39&folder=jan1977&pic=26

http://www.cgs.synth.net/modules/cgs59_prog.html

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El 20/11/2006, a las 19:48, Fernando de Izuzquiza escribió:

> IIRC, there is a scanned article from Synapse magazine about a  
> pressure sensitive Serge keyboard.
> Serge based his designs (the functionality) on the Buchla, so it  
> may be what you are looking for.
> If you couple it with CGS-59 Programmer/Sequencer you have an  
> enhanced Serge touch keyboard!
>
> Fernando
>
> (who doesn't like piano-like keyboards at all for this application)
>
>
>
> El 20/11/2006, a las 17:11, David Moylan escribió:
>
>> I've 'thought' about making one of these many times.  My thought  
>> was to
>> use a microcontroller to measure rise time of an RC circuit with the
>> capacitive key as the C.  Since I've never worked with  
>> microcontrollers
>> the learning curve is pretty steep for me and I've got a host of  
>> other
>> things I want to build as well.
>>
>> I'm in Philadelphia so I see Charles Cohen playing his Music Easel
>> fairly frequently.  Every time I do I'm reminded of how bad I want a
>> touch sensitive touch plate keyboard.  Granted, it's probably got  
>> a lot
>> to do with Charles' skill.  Nonetheless, touch sensitivity in general
>> really can add a lot to an instrument.
>>
>> I don't care much about MIDI, but I assume if you used a fast enough
>> microcontroller you could measure the capacitance of the keys and do
>> polyphonic voice assignment and MIDI out, but that will either  
>> take me a
>> lot of time or take someone with more microcontroller experience  
>> or both.
>>
>> If you've got the cash there's always the Serge TKB.  Those are still
>> available, right?
>>
>> Dave
>>
>> anthony wrote:
>>> Are they both capacitative? I know Buchla seemed to prefer these  
>>> and I
>>> like his version that hardly looks like a piano keyboard at all.
>>>
>>> What I'm curious about: have any of you had any lucky maing one  
>>> of these?
>>>
>>> I was thinking about using one in one of my "Synthasaurus" synths.
>>>
>>
>