Vibration Sensor Module

Vibration Sensor Module

Shock Detection Motion Monitoring Simple Interface

The Vibration Sensor Module is an electronic sensor used to detect vibrations, shocks, or movement. It is commonly used in security systems, alarm devices, industrial monitoring, and robotics projects.

Most modules use a spring-type vibration switch (such as the SW-420) and a comparator circuit to convert vibration into a digital output signal that can be read by microcontrollers.

Infographic Overview

Basic Specifications

Very fast

Main Components

Pin Configuration

Working Principle

The module detects vibration using a mechanical vibration switch.

Step-by-Step Operation

1 When the module is still, the vibration switch remains open or stable.2 When vibration or shock occurs, the internal spring contacts move.3 The movement generates an electrical signal.4 The LM393 comparator processes the signal.5 The digital output changes state, indicating vibration.

Sensor Module Structure

Vibration Sensor Module SW-420 Vibration Sensor larm systems Anti-theft devices Machine vibration monitoring Door knock detection Robotics motion detection

Compatible Microcontrollers

The vibration sensor works easily with:

• Arduino Uno

• Arduino Nano

• ESP32

• Raspberry Pi

Advantages

Simple and easy to use Adjustable sensitivity Fast vibration detection Low power consumption Small and lightweight

Limitations

Cannot measure vibration intensity precisely Sensitive to small environmental vibrations Only provides digital detection (ON/OFF)

Example DIY Project

p

Arduino Uno

Buzzer

LED indicator

Working

Sensor detects vibration when object is moved Arduino receives signal Buzzer alarm activates