Arduino based solar tracking with Android App controller

Abstract

Sun is an abundant source of energy and this solar energy can be harnessed successfully using solar photovoltaic cells and photovoltaic e ect to convert solar energy into electri- cal energy. But the conversion e ciency of a normal PV cell is low. One of the main reason for this is that the output of PV cell is dependent directly on the light intensity and with the position of the sun in the sky changing continuously from time to time; the absorption e ciency of an immobile solar panel would be signi cantly less at certain time of the day and year; for the solar photovoltaic cells are maximum productive when they are perpendicular to the sun and less productive otherwise. So to maximize the energy generation and improve the e ciency; solar trackers come into play. This paper presents the design and construction of an inexpensive active solar tracking system for tracking the movement of the sun so as to get maximum power from the solar panels as they follow the sun. It uses Light Dependent Resistors to sense the position of the sun which is communicated to a Arduino Uno microcontroller which then commands a set of two servo- motors to re-orient the panel in order to stay perpendicular to the sun rays. The design was constructed successfully and tested using Lab View to determine the improve- ments in e ciency. Evaluation results show that the new system performs 13.4percent better than the immobile solar PV system. Solar energy with solar tracking, will become possible to generate more energy since the solar panel depend on sun.Light Dependent Resistor(LDRs) are used for sunlight detection. To solve the electricity problem we uses solar and battery to save power which provide the user the availability of electricity. Here we are focusing on less power consumption and more performance device.