Automatic Street Light Control System Project

This Automatic Street Light Control System project consists of LDR (Light Dependent Resistor) sensor interfaced with LM358 Comparator. When the LDR surface is illuminated with light, its resistance decreases whereas when there is no light falling on its surface, its resistance is infinite.

Depending upon that condition, comparator input changes, and hence corresponding output also changes. The output of the comparator is given to the microcontroller which monitors input and depending upon that takes proper action to switch on or off-street lights

Street Light Control Software Tools:

  1. Keil compiler
  2. Embedded C
  3. Orcad.

Hardware Tools:

  1. Microcontroller AT89S52.
  2. LM358 Comparator
  3. Transistor Driver
  4. Relay

Related Project:

Smart Street light management using IBM Watson

This project aims to control the intensity of the street lights with individual area control, total area control and dimming of the street lights as the street light plays a major role in safe road transport that if the street lights are turned on unnecessary there will be a huge loss in city’s electricity, As they consumption lots of power.


1. To reduce power loss.
2. To make safe road transport.
3. Smart transport management.
4. Decrease human efforts.
5. Individual Area control.
6. Total Area control.
7. Dimming of lights.

Software: Arduino IDE, MIT App Inventor 2, IBM Watson Cloud Services

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