Auto Light Intensity Controller By External Light Sense Using PIC

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Automatic Light Intensity Controller By External Light Sensing project mainly aims at saving energy. The system does this by introducing LED lights with changeable intensity option. Thus the system avoids the use of expensive highway lights which consumes a lot of energy. Thus to save energy, this system allows users to change the intensity of the LED’s (Light Emitting Diodes) as per the need. The programmable instructions to control the intensity by producing pulse width modulated signals which drives a MOSFET to switch LEDs to achieve required results are fed into the PIC microcontroller. This system also has the capability to sense external lights and accordingly adjust the intensity of the LED’s using PWM. Thus when the external light is low, the system automatically increases the intensity of the LED lights and if the external light is high, the ststem automaticall decreases the intensity of the LED lights. Thus by adjusting the intensity of the LED lights as per the need, this ystem saves a lot of energy.



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Hardware Specifications

  • Transformer
  • Diodes
  • White LEDs
  • Crystal
  • PIC series Microcontroller
  • Light Sensor
  • MOSFET
  • LEDs

Software Specifications

  • MPLAB
  • MC Programming Language: Embedded C
Block Diagram

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