The Smart Vehicle Headlight Auto Switching with Intensity Control system is an intelligent lighting solution designed to enhance driving safety and energy efficiency using an Arduino Uno microcontroller. The system utilizes a Light Dependent Resistor (LDR) to continuously monitor ambient light conditions and automatically switch the vehicle headlights ON or OFF based on environmental brightness. Additionally, the system adjusts the intensity of the headlights dynamically to prevent glare and ensure optimal visibility during night driving. A key ignition input ensures that the system operates only when the vehicle is active, while a dedicated Auto/Manual switch allows the driver to choose between automatic operation and manual control of the headlights. A transistor is used as a driver circuit to regulate power supplied to the LEDs representing the headlights. This project reduces driver effort, improves road safety by minimizing human error, and provides an energy-efficient solution for modern smart vehicles.    

Objectives:

  To automatically switch vehicle headlights using an LDR.

  To control headlight brightness based on light conditions.

  To use Arduino Uno for system control.

  To provide Auto and Manual mode selection.

  To operate headlights only when ignition is ON.

  To improve safety and reduce power usage.    

The major building blocks of this project are:

• Battery power supply.
• Arduino UNO Micro controller
• LDR.
• Auto/Manual Switch.
• Key.
• High power LEDs with transistor.
• Vehicle.

    Software’s used:  

• Embedded C programming.
• Arduino IDE studio for dumping code into Micro controller.
• Express SCH for Circuit design.

       

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