here are a couple of sources for piezo discs for contact microphones, vibration/knock sensors, underwater contact microphones, and more:
Electronic Goldmine as piezo discs with and without plastic casing.
Digi-Key sells several diameters of piezo discs.
This page contains a single entry by Diane Willow published on November 18, 2010 5:56 PM.
Trimpin was the previous entry in this blog.
electronic supplies is the next entry in this blog.
Find recent content on the main index or look in the archives to find all content.