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Automatic Head Light Dim/Bright Controller

Published on Sep 03, 2023


The aim is to design and develop a control system based an electronically controlled automatic head light controller by using LDR Sensor and engine over heating alarm by using heat sensor is called “AUTOMATIC HEAD LIGHT DIM/BRIGHT CONTROLLER AND ENGINE OVER HEATING ALARM”.

Automatic head light dim/bright controller and engine over heating alarm is consists of LDR sensor circuit, Heat sensor Circuit, Control Unit, Dim/bright light and frame. The sensor is used to detect the opposite side vehicle (Light Beam) on the path. There is any obstacle on the path, the sensor senses the obstacle (Light Beam) and giving the control signal to the Dim/bright Light. Similarly the heat sensor is fixed to the engine and this heat is measured and giving the alarm signal when the engine heat exceeds the setted temperature limit.


Car safety is the avoidance of automobile accidents or the minimization of harmful effects of accidents, in particular as pertaining to human life and health. Special safety features have been built into cars for years, some for the safety of car's occupants only, and some for the safety of others. We have pleasure in introducing our new project “AUTOMATIC HEAD LIGHT DIM/BRIGHT CONTROLLER AND ENGINE OVER HEAT ALARM”, which is fully equipped by sensors circuit, dim/bright light and engine over heat alarm circuit. It is a genuine project which is fully equipped and designed for Automobile vehicles.

This forms an integral part of best quality. This product underwent strenuous test in our Automobile vehicles and it is good. Man has needed and used energy at an increasing rate for its sustenance and well being ever since he came on the earth a few million years ago. Primitive man required energy primarily in the form of food. He derived this by eating plants or animals, which he hunted.

Subsequently he discovered fire and his energy needs increased as he started to make use of wood and other bio mass to supply the energy needs for cooking as well as agriculture. He added a mew dimension to the use of energy by domesticating and training animals to work for him.

With further demand for energy, man began to use the wind for sailing ships and for driving windmills, and the force of failing water to turn water wheels. Till this time, it would not be wrong to say that the sun was supplying all the energy needs of man either directly or indirectly and that man was using only renewable sources of energy.

The major components of the “Automatic rain operated wiper” are follows

LDR Sensor and Heat Sensor



Dim/Bright Light (Head Light)



Automatic Head Light Dim


Low cost automation project.

Less power consumption

Operating Principle is very easy

Installation is simplified very much.

Less time and more profit.


 Four wheeler application

 Two Wheeler Application


1. This circuit is not working on low rain fall.

2. This system applied in the case of water falling on the class period only.

3. Addition cost is required to install this system to four wheeler.

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