Achieving balance between power consumption and power production is a bigger challenge today. The best way to solve this imbalanced equation is to use solar energy as efficiently as possible. The problem in the usage of solar energy is with solar cell panel should be exposed maximum to the sun light. If the solar panel is fixed in a particular direction, then the sun light intensity varies from morning to evening. Moving the solar cell panel in the direction of sun can increase the solar energy generated from the solar cell. The purpose of this project is to design and construct a solar tracker system that follows the sun direction for producing maximum out for solar powered applications at IOT based dual axis using DC motor and platform. This project consists of few sun light sensors and a motorized mechanism for rotating the panel in the direction of sun. This system works continuously without any interruption. The main controlling device of the whole system is an Arduino nano Microcontroller. Solar panel along with voltage sensor, limit switches, loads, ESP8266 WI-FI and LDRs are interfaced to Microcontroller. The Microcontroller initially measures the voltage and WATTS from solar panel and will be send to the blynk mobile application through ESP8266 WI-FI Module. Microcontroller based control system takes care of sensing sunlight and controlling the motorized mechanism using DC motors. Limit switches are used to sense the tracking mechanism. Solar panel energy is obtained stored into the battery through charging circuit and this battery power is used to turn ON the loads will be controlled by the user from blynk mobile application. To perform this intelligent task, Microcontroller is loaded with an intelligent program written using embedded ‘C’ language.  

The main objectives of the project are:

• Tracks sun direction automatically.
• Starts automatically in the morning (initial position).
• Solar panel moves using DC motor.
• Uses IoT technology.
• Monitors voltage & power in Blynk app.
• Controls loads remotely via mobile.

    The major building blocks of this project are:

• Arduino Nano Microcontroller.
• Sun light Sensor to sense the sun direction.
• Motorized mechanism to control the position of solar panel.
• Limit switches.
• ESP8266 WI-FI module.
• Charging circuit.
• Rechargeable battery.
• 7805 voltage regulators.
• Two LEDs.

    Software’s used:  

• Arduino IDE compiler for Embedded C programming.
• Express SCH for Circuit design.
• Blynk mobile application.

    Block Diagram:  

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