[sdiy] Found the Piezo Manufacturer!

[Scott Stites]

> OK, found them (the company that makes the switches I'm using).  here's
> their site:
>
> http://www.piezoswitch.com/

There must be some mistake - I didn't see 'touchplate keyboard' listed
anywhere in the recommended usage section =-D.

I wonder if they are piezoresistive and the two leads are analagous to the
two leads of a resistor that changes its resistance with pressure.  If so,
then the current will vary with pressure accordingly, and perhaps the buffer
Peter mentions converts the current to pressure voltage?

Other than that wild stab in the dark, beats the hey outta me how they work
(that didn't take long, did it?).

Cheers,
Scott