Sun Tracking Solar Panel Using Arduino Circuit Diagram

Arduino solar tracker circuit diagram in the circuit two ldr light dependent resistors sensors are used to sense the light.

Sun tracking solar panel using arduino circuit diagram.

Four ldrs and four 100kω resistors are connected in a voltage divider fashion and the output is given to 4 analog input pins of arduino. Light dependent resistors ldr1 through ldr4 are used as sensors to detect the panel s position relative to the sun. This solar tracker control system is designed to take light measurements from the east and west left and right side of the solar panel and determine which way to move the panel to point it directly at. The solar tracker comprises comparator ic lm339 h bridge motor driver ic l293d ic2 and a few discrete components.

It consists of only this components ldr module l293d motor driver module dc motor 30 rpm solar panel. These provide the signal to motor driver ic2 to move the solar panel in the sun s direction. Since ldr is an analogue sensor they are connected to the analog pins a0 and a1 of arduino. The sensors are connected in series with 10 k ohm resistors.

In this project we are going to show you how to make an arduino based solar tracker using ldr servo motor. We have designed a single axis solar tracking system. The dual axis solar photovoltaic panel takes astronomical data as reference and the tracking system has the capability to always point the solar array toward the sun and can be installed in various regions with minor. Here is a simple low cost solar tracker circuit which automatically moves the solar panel in the direction of sun.

It searches for the brightest light source like the sun. When the stick on top is righted to the sun or the brightest point the four ldrs get the same amount of light on them. Generally solar panels are stationary devices which is fixed at a position. The pwm inputs of two servos are given from digital pins 9 and 10 of arduino.

The aim of this solar tracker project is to keep the solar photovoltaic panel perpendicular to the sun throughout the year in order to make it more efficient. The produced electrical energy can be increased if we move the solar panel as the movement of the sun. 1 shows the circuit of the solar tracking system. A single axis solar tracker improves solar output by around 25 and a dual axis tracker by around 40 according to this article on altestore.

The solar panel tracker is designed to follow the sun movement so that maximum light intensity hits on the solar panel thus increasing the power efficiency.