Yamaha CS80

They are "force-sensing resistors" which are sold in a variety of 
configurations these days.  I'll have to find out if any are suitable as 
aftertouch sensors.

Crow
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On Fri, 1 Oct 2004, David Rogoff wrote:

> What is in the CS-80's sensors?  I know it's a rubber cushion and,
> according to the schematics, electronically it acts like a
> potentiometer, outputing a voltage proportional to the pressure, but I
> don't know what's going on inside it.  Are there (widely, cheaply)
> available force sensors that could be used to add pressure sensing to
> an existing keyboard (if you could figure out where to mount them)?
> 
>  David