This Automatic Street Light Control System project consists of LDR (Light Dependent Resistor) sensor interfaced with LM358 Comparator. When 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 microcontroller which monitors input and depending upon that take proper action to switch on or off street lights

Street Light ControlĀ Software Tools:

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

Hardware Tools:

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