[sdiy] Aftertouch via Pressure

[The Peasant]

Hi Tom,

There are many different types of analog pressure 
transducers that should work nicely for this. I don't have 
any specific info handy, but I imagine a google search 
would find what you need. I do have some salvage 
transducers in my stuff that should work, let me know if 
you want me to dig them out.

Some soft silicon tubing connected to a transducer and 
sealed at the other end is probably how this is done. The 
transducer will output a voltage proportional to the 
pressure on the tube, which you can then process as desired.

Take care,
Doug
______________________
The Electronic Peasant

www.electronicpeasant.com

> -----Original Message-----
> From: Tom Arnold [mailto:xyzzy at sysabend.org]
> Sent: Tuesday, July 08, 2003 1:34 PM
> To: synthdiy at sdiy.org
> Subject: [sdiy] Aftertouch via Pressure
> 
> 
> Recently someone mentioned that there was a keyboard that
> grabbed aftertouch
> info via the use of a pressure sensor on a tube that ran
> under the keys.
> Has anyone considered trying to implement this on a
> keyboard as a DIY?
> Any suggestions as to a pressure sensor to look for?  I
> dont even know where
> to start looking for something like this.  Everything I'm
> familier with
> will be automotive/mechanical and probably not sensitive
> enough.
> 
> -- 
> 
> ----------------------------------------------------------
--------------
>  - Tom Arnold -       When I was small, I was in love,   
>               - 
>  - Sysabend   -       In love with everything.           
>               -
>  - CareTaker  -       And now there's only you...        
>               - 
>  --------------         -- Thomas Dolby, "Cloudburst At
> Shingle Street" -
>