DZS Elec 15PCS 35mm Piezo Disc Transducer Contact Microphone Trigger Sound Sensor with 4 Inches Wires for Acoustic Instrument

Great value for the price. They all arrived in good condition. No complaints.

i love that these are available in mass quantities for cheap, made many mics and they work great if u get good adhesion

Used to replace electric drum triggers. I am pleased with them. Would recommend.

These work, of course, but the wire connections are fragile. They will fatigue with just a few bends and break soon thereafter. The wires are a very thin guage, but they need to be so as not to prevent the disc from vibrating. So be aware: the wire contacts are fragile, but they need to be. Expect to need to treat these gently.

This is the first can mic that I have made, and it sounds pretty alright for what it is, it took some moving around of the piezo to find that sweet spot, and I did find it, now I can start thinking about the part in the train song I'm working on to use this thing. I'll definitely make more as I have plenty more piezo discs...Rumble Road Records & NoSlip Records

Used these as a contact microphone and they work about as well as expected. The disc is larger than most but the wires are really thin and flimsy

We used these in a science fair project to charge a small battery from energy created while walking around. They worked great for prototyping (and demonstrating the limitations of the idea). Very easy to burn through if you need to solder them into a circuit, but not likely what most people will use them for, and with a steady hand it’s not really an issue (our 7 year old is still very new to this and killed a couple, but that’s not the fault of the product).

I glue these on my head so I can hear my thoughts!

i can hear EVERYTHING in the next room!