Simple Vibration Sensors

The vibration sensors can be very useful in alarm systems and automation, but are usually a bit expensive.

This sensor utilizes a piezo sounder elements to detect vibrations coming. The circuit uses reverse engineering and vibration sensor circuit that can be used in a toy dog ​​that barks when he feels a vibration near the same on their projects using Arduino microcontrollers or.

 Here is a picture element piezo vibration sensor.