SOLAR TRACKING BASED MOBILE CHARGER WITH BATTERY VOLTAGE ANALYZER USING ARDUINO

Abstract

In today’s climate of growing energy needs and increasing environmental concern, alternatives to the use of
non-renewable and polluting fossil fuels have to be investigated. One such alternative is solar energy. Solar panels
consist of photovoltaic cells, converts the solar energy into electrical energy and this electrical energy is stored into the
battery. Solar energy is a time dependent energy resource, at night or during heavy cloud cover, solar panels cannot
produce energy. Hence need has aroused to develop a project, which can be used to utilize the solar energy effectively,
when the sun is present. This project work is designed the system rotates the panel automatically according to the sun
position, so that maximum solar power can be utilized. Two LDR’s are used, where one is used to distinguish day/night
and the another is used to trace out maximum intensity. One more additional controller is connected to the third LDR
through trigger circuit designed using a 555 timer for detecting any shadows falling. If so, automatically the chassis
will be moved by operating the DC motors until the shadow is removed. Here we using an IR sensor are used to detect
the pits on the ground surface. Thus, the electrical energy generated from the solar panel is stored into a rechargeable
battery through a charging control circuit that protects the battery from high voltage and over charging. In addition,
the battery voltage is analyzed by the Arduino controller ad will be displayed in the LCD interfaced to it. The battery
output is connected to a voltage regulator of 5V to charge the mobile phone.