1. Working Principle: An analog vibration sensor based on a piezoelectric ceramic film utilizes the inverse transformation process, employing piezoelectric ceramics to generate vibrations. When the piezoelectric ceramic piece vibrates, it produces an electrical signal. 2. Analog Output: The analog voltage ceramic vibration sensor module is connected to the controller's analog pin A0 according to the program. When the vibration level varies, monitoring the output value via the serial port can achieve vibrationrelated interactive functions. 3. Sensitivity: This vibration switch sensor module has sensitivity and can be adjusted to respond to a breath blow or a hand tap. 4. Combined Use: This vibration switch module is designed to be used with dedicated sensor expansion boards, and analog connections can detect weak vibration signals. It enables vibrationrelated interactive applications, such as electronic drum interactions.