I’ve seen a couple of really cool projects that use simple piezos as vibration sensors, i.e. for MIDI drums. In each of these projects, the piezo is attached to some larger, flat surface. The surface is struck and the piezo picks up the vibration.
I’d like to create something similar, but I’d like to be able to put the sensor into a stuffed animal. I’d like to be able to sense when the animal is struck. This means the piezo would not be attached to a hard, flat surface. Is there any way that the piezo would still be able to sense the vibration in this kind of setup, or would I have to find a more exotic (and expensive) sensor?