You might be able to use it or take its idea and adapt your own. I have seen the same piezo discs in all of those.
SO you probably do not need to worry whether the piezos you find are for buzzers or speakers or microphones or drum pads. But put sound to it or vibration, and it generates a voltage. Put a voltage to it and it changes shape, a varying voltage then will make sound. The drum pads on electronic drum kits use piezo discs on a circle of wood. Piezos are also used as microphone, that is what is inside a cheap "crystal microphone". Piezos are also used as tweeters, the very common Motorola piezo now made by CTS are real cheap, and I have taken them apart to steal the piezo disc in the past. Will a Piezo with a higher or lower dB sound emission rating be better at picking up audio (remember it is now being used as a MIC, not a buzzer)? I assume a larger diameter Piezo disc is better.
#SMALL PIEZO DISC HOW TO#
I do know how to build the project, I just need to know what specifications to look for in the Piezo to make it the most suitable contact MIC as selecting the right Piezo for the job will make the project more accurate and easier to program. I would like to use the Piezo as a MIC and thus seek advice from people out there with more expertise than myself, that have done this before, to advise me on what kind of Piezo would be best suited for the application I would like to use it for. So a Piezo (when used as a buzzer) is selected based on Internal or External drive circuitry as well as the tone (determined by the frequency it emits).
Piezo discs are mostly used for buzzers, which emits sound. Click to expand.I did see this project, but I do not want to know how to do it, I am seeking advice on how to select a Piezo, something which is not just as simple as using " ".
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