Solar Tracker Using 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.

Solar tracker using arduino and servo motor.

Connect 5volt pin from the arduino to the lower horizontal row of the breadboard. Following are the list of components required to design a solar tracker. Extend the 5 volt and gnd rows to the upper horizontal rows of the breadboard respectively. The pwm inputs of two servos are given from digital pins 9 and 10 of arduino.

Ldr 2 nos. Similarly connect the gnd pin from the arduino to a second lower horizontal row of the breadboard. 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.

The sensors are connected in series with 10 k ohm resistors. 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. 5 to 12 volt power supply. The servo is controlled through one of the arduino s pwm outputs.

The circuit design of solar tracker is simple but setting up the system must be done carefully. The used servo motors are controlled by the arduino uno board via 3 wire electrical cable as shown in fig. In this project an arduino nano is used which works as a controlling unit. Since ldr is an analogue sensor they are connected to the analog pins a0 and a1 of arduino.

Photovoltaic powers the solar tracker no external source needed. Before reading the post please check the video from my channel it gives 70 of idea about the project. If you are simply trying this project for fun then a breadboard is perfect. The embedded software design the embedded software is the piece that will be embedded in the hardware arduino uno to control and monitor the solar tracker test bench.

Arduino solar tracker with servomotor. This solar tracker uses two ldrs to measure the light or the resistance of the ldr changes according to the light. 3 two wires for supply and one wire for pwm to control its positions. 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.

Two ldr s light dependent resistor are also connected to analog pins of the arduino. Interfacing dual axis solar tracker arduino project using ldr servo motors. It can also charge mobile phone. 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.