I have a project where I'm using piezo sensor LDTM-028K I was using handy h6 recorder for recording the values with a gain of 7, now I need to remove that recorder and just have a circuit connected to esp32. Without amplifier its too low for esp to read sensitive vibrations. Any suggestions on what amplifier to use?
How did you connect the vibration sensor to the ESP.
Did you use a 1:1 voltage divider, to bias the sensor to 1.65volt.
Show us the code to measure vibration (AC), which needs a stream of measurements, not just a single snapshot.
Leo..
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