Cortado" Balanced Piezo Contact Mic kit now available from Zeppelin Design Labs | diyAudio
Not a lot of love in r/DIY for my Piezo Mics I made! : r/WeAreTheMusicMakers
Building A Contact Mic Using Homemade Piezo Crystals | Hackaday
Belt The Quarantine Blues Into A Homemade Mic | Hackaday
Designing and building an active contact microphone for field recording and sound design — Ezra Gray Audio - Sound Engineer & Sound Artist in Dorset, UK
Piezo contact microphone hi-Z amplifier – low noise version – Richard Mudhar
Zeppelin Design Labs Cortado MkII Contact Mic DIY Kit
Make a Contact Microphone : 10 Steps (with Pictures) - Instructables
Building (or Buying) Contact Mics – Zach Poff
HOW TO MAKE A PIEZO CONTACT MICROPHONE (DIY LO-FI MIC TUTORIAL) - YouTube