This project presents a solar tracking and street light control system designed to maximize energy generation and automate street lighting. The system uses dual LDR sensors to detect sunlight intensity from the east and west directions, enabling a DC motor to adjust the solar panel position for optimal sunlight exposure throughout the day. An additional LDR sensor is employed to differentiate between day and night, allowing the system to automatically switch ON the street light at night using stored battery power. A voltage sensor continuously monitors the solar panel and battery voltages, while a PWM-based MPPT (Maximum Power Point Tracking) technique ensures efficient energy harvesting and charging of the battery. An LCD module displays solar voltage, battery voltage, and PWM duty cycle. By integrating solar tracking with smart lighting control, this system enhances energy efficiency, reduces power wastage, and provides a reliable and eco-friendly solution for street lighting applications.    

The major features of this project are:

  Dual LDR sensors for automatic solar tracking.

  Day/night detection using an additional LDR.

  PWM-based MPPT for efficient battery charging.

  Automatic street light control at night.

  Real-time voltage and PWM display on LCD.

  Renewable energy utilization for power saving.      

The major building blocks of this project are:  

1. Solar Panel.
2. Battery Charging Circuit.
3. 12V Battery.
4. Voltage Sensor.
5. PIC Microcontroller.
6. Relay.
7. Street Light.
8. DC Motor.
9. LCD Display.
10. LDR.

        Software’s used:  

• PIC-C compiler for Embedded C programming.
• PIC kit 2 programmer for dumping code into Micro controller.
• Express SCH for Circuit design.

          Regulated Power Supply:

                   

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