Development Of Solar Tracker Using Microcontroller To Control Stepper Motor

Selamat, Siti Khotijah (2017) Development Of Solar Tracker Using Microcontroller To Control Stepper Motor. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

In this modern state, natural energy is indispensable in all human activities. In addition, rapid development in a country also requires energy sources. This proves that the natural energy need to be produced with much more to meet the development. Additionally, most developed countries use solar energy extensively. Solar energy has been gaining attention in the daily life of the human being in the industrial, agricultural, transporting and advanced technology application systems. So, with this project that have been purpose, a country can save on their development costs. As Malaysia is located on the equatorial line, Malaysia is most likely focus on this solar energy as the country receives plenty of sunshine over the years. To make this project successfully, a single axial solar tracker was purposed designed by implementing a project that have capable of rotating the stepper motor based on light intensity. The purpose of this project is to design a solar tracker that detect the maximum sunlight and to analyze the maximum power output between the fixed position solar panel and movement panel (solar tracker). This project had been divided into three main parts which is input (Analog input), microcontroller (PIC18F) and output (stepper motor). The microcontroller is like a brain that reads the input or signal from the LDR sensor. In this project, five LDR sensors have been used. Each LDR sensor used a voltage divider circuit to measure the intensity of light and then determine the direction of light that perpendicular to the surface of the solar panel. After the instructions have been discontinued, the PIC will make an operation to rotate the stepper motor based on the most higher intensity of sunlight or the maximum light intensity. All input in this system are analog input, which is current sensor and voltage divider circuit.

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