Sun Tracking Solar Panel Circuit

Light dependent resistors produce low resistance when light falls on them.
Sun tracking solar panel circuit. The solar tracker comprises comparator ic lm339 h bridge motor driver ic l293d ic2 and a few discrete components. 1 shows the circuit of the solar tracking system. The sun tracking solar panel consists of two ldrs solar panel and a servo motor and atmega328 micro controller. For solar panels control is best to use small motors with a suitable voltage and a maximum working current of 300 ma.
The movement of the sun is detected using two ldrs which are arranged on the solar panel in such a way that the intensity of light falling on it varies as the direction of sun changes. Two light dependent resistors are arranged on the edges of the solar panel. Solar tracking system circuit fig. This solar tracker system is used for tracking the sun only in one plane the horizontal one.
Light dependent resistors ldr1 through ldr4 are used as sensors to detect the panel s position relative to the sun.