Vibration Detection System using Arduino, HC-05 & MIT App | Proteus + Real Hardware | Step-by-Step DIY

Arduino Jul 5, 2025 0 2490 Add to Reading List

Learn how to build a smart Vibration Alert System using Arduino, HC-05 Bluetooth, and MIT App Inventor. Get real-time vibration notifications on your Android phone using this low-cost DIY project. Includes Proteus simulation, hardware setup, Arduino code, and .aia app file.

In this project tutorial, we will show you how to build a Vibration Detection and Alert System using an Arduino Uno, a vibration sensor (SW-420), the HC-05 Bluetooth module, and an Android App created using MIT App Inventor. This system detects vibrations and sends a real-time notification to your smartphone via Bluetooth.

This is an ideal project for engineering students, DIY electronics enthusiasts, and anyone interested in IoT (Internet of Things).

Project Overview

What You Will Learn:

How to simulate the vibration sensor circuit in Proteus
How to write Arduino code to detect vibration
How to connect HC-05 Bluetooth module to Arduino
How to build an Android app using MIT App Inventor
How to get real-time phone notifications for vibration

Components Used:

- Arduino Uno – https://amzn.to/4kr80GB
- Vibration Sensor Module (SW-420) – https://amzn.to/3TXDskO
- HC-05 Bluetooth Module – https://amzn.to/4kpPrT9
- Android Phone – Use any Android device
- 9V Battery – https://amzn.to/3IceETy
- USB Cable for Arduino – https://amzn.to/3TY9BZu
- Jumper Wires (Male-to-Male / Male-to-Female) – https://amzn.to/44Nlmbq
- MIT App Inventor (Free Tool) – https://appinventor.mit.edu

Circuit Diagram & Proteus Simulation

You can first simulate the circuit using Proteus to test how the vibration sensor will behave. Connect the SW-420 vibration sensor to the Arduino’s digital pin and connect the HC-05 module to the TX/RX pins.

Once simulated successfully, replicate the same on actual hardware.

Arduino Code

The Arduino code continuously checks the vibration sensor status. When vibration is detected, it sends the message "Vibration Detected" to the serial port (and HC-05), which is then picked up by the Android App.