[sdiy] piezo disks in the EU?

[Ingo Debus]

Bert Schiettecatte wrote:
> about piezo disks for detecting finger taps or drum stick hits: 
> does anyone know where to get these things in Europe? 

Conrad for instance. Very cheap, and different sizes available. These 
are meant to be used as piezo buzzers, but can be used as 
"microphones" as well.

Another option for a drum sensor is a tiny loudspeaker, that thing 
that is used for instance in the earphone part of a telephone. Not as 
cheap as a piezo, but you don't have to deal with high impedance. I've 
used these with success.

Ingo