Smart Car Saftey System

Published Jun 30, 2026
 100 hours to build
 Advanced

The project presents a smart car safety and battery controller module for automobiles. The proposed system not only enables remote battery disconnection and reconnection but also ensures intelligent power management to improve safety, and prioritize critical vehicle functions

display image

Components Used

Arduino UNO
Arduino UNO
1
Relay Module Single Channel
Relay Module Single Channel
1
DIY V8 Engine
working model
1
Ignition switch
use to turn on the vehicle
1
HC 05
Bluetooth module
1
Starter Motor
to start the engine
1
9V battery and holder
to power the engine
1
Connecting wires
Used to establish electrical connections between components.
1
Description

The project presents a smart car safety and battery controller module for automobiles. The proposed invention not only enables remote battery disconnection and reconnection but also ensures intelligent power management to improve safety, and prioritize critical vehicle functions. 

The system comprises:  A microcontroller for processing real-time data and executing power management.  Arduino Uno Bluetooth modules, designed to enable real-time wireless communication with a companion mobile application.  A relay module that control the flow of power from the  main battery to all electronic systems of the vehicle. 

The mobile application interface includes:  Manual control options for battery disconnect or reconnect.   All communication between the application and the device is secured via in-built encryption protocols to prevent unauthorized access. Furthermore, the controller enhances vehicle security by allowing the user to disable the battery remotely in case of unauthorized use or theft attempts. The invention, therefore, provides a smarter, safer, and more efficient battery management system for modern and old vehicles.

Development of this project in simple steps:

  1. Developed a mobile app that connects hardware via Bluetooth.
  2. Added the relay between main battery's positive lead and to other components.
  3. The microcontroller gets the input control from the user via the Bluetooth module and processes the signal according to the code and informs the relay either to turn on or off. 

    Advantages:

    1. This model greatly reduces the vehicle theft.

    2. It protects the battery during long standing hours. 

Circuit Connection 

 

Video

Codes

Downloads

circuit_diagram Download
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