Solar Tracker Using Arduino And Servo Motor

This solar tracker uses two ldrs to measure the light or the resistance of the ldr changes according to the light.

Solar tracker using arduino and servo motor.

The pwm inputs of two servos are given from digital pins 9 and 10 of arduino. Similarly connect the gnd pin from the arduino to a second lower horizontal row of the breadboard. In this project an arduino nano is used which works as a controlling unit. The used servo motors are controlled by the arduino uno board via 3 wire electrical cable as shown in fig.

Two ldr s light dependent resistor are also connected to analog pins of the arduino. This solar tracker system uses the arduino uno board a servomotor 2 ldrs and 2 resistors to rotate the solar panel towards the sun or a source of light. 3 two wires for supply and one wire for pwm to control its positions. To track the sun i used four ldc sensors and arduino compares the data from them to rotate the panel in the direction with the most sunlight using two dc motors one for each axis and motor driver.

Photovoltaic powers the solar tracker no external source needed. Tact switch button resistors 10k 3 nos. Read servo motor control using arduino in the circuit two ldr light dependent resistors sensors are used to sense the light. Before reading the post please check the video from my channel it gives 70 of idea about the project.

Since ldr is an analogue sensor they are connected to the analog pins a0 and a1 of arduino. Following are the list of components required to design a solar tracker. It can also charge mobile phone. Extend the 5 volt and gnd rows to the upper horizontal rows of the breadboard respectively.

Connect 5volt pin from the arduino to the lower horizontal row of the breadboard. The circuit diagram for the arduino based solar tracker using ldr servo motor is given below. So i ve made a solar tracker using an arduino and servo motor. A dummy solar plate is attached in parallel to the axis of servo motor and both the sensors are kept on the dummy solar plate as shown in the figure below.

Arduino solar tracker with servomotor. Interfacing dual axis solar tracker arduino project using ldr servo motors. 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. The circuit design of solar tracker is simple but setting up the system must be done carefully.

If you are simply trying this project for fun then a breadboard is perfect. Ldr 2 nos. 5 to 12 volt power supply. The servo is controlled through one of the arduino s pwm outputs.