Piezo Vibration Sensor

Piezo sounder elements are often used to sense shock and vibration.

Reverse engineered circuit diagram of the vibration sensing circuit out of a toy dog that barks when he senses a thump nearby:

Circuit Diagram aka Schematic reverse engineered from circuit board

Here is a picture of the piezo vibration sensor element. It is in fact a piezo sounder element:

Supplementary Illustration or Photograph or other Graphic

Safety, accuracy and completeness of information provided herein is not guaranteed,
so be inspired by it but do not use it as a basis for experimentation or other actions.

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