How to make a Solar Tracker using Arduino, Arduino solar Tracking system its circuit and programming

(Last Updated On: February 13, 2020)

Solar Tracker


In this tutorial, you will learn how to make your own Arduino based solar tracking system. This solar tracker project is based on the Arduino, LDR, and H-bridges. The LDR’s will be used for sunlight sensing. In this tutorial, I will discuss everything

  1. Complete circuit diagram
  2. Step by Step soldering
  3. Complete interfacing
  4. step by step controller program explanation
  5. Finally testing.

Today the solar trackers are used throughout the world, the solar tracker that we are going to make today is best as it’s cheap and is able to rotate heavy panels as we will be using the relays, and as you know relays can bear larger currents. We will be making our own H-bridge to control the direction of the dc Gear motor.

For the detailed step by step explanation Watch Video Tutorial “Click Here

The components and tools used in this project can be purchased from Amazon, the components Purchase links are given below:

Arduino uno:

Mega 2560:

dc gear motor:

12v 10A SPDT relay:

pcb copper plate:

2n2222 npn transistor:

variable resistor:

10k Resistor

lm741 operational amplifier:

1k resistors pack:

LDR pack:

330-ohm resistors pack:

lm7805 Voltage Regulator:

lm7812 Voltage regulator:

leds kit:

330-ohm resistors pack:

10uf capacitors:

atmega328 micro controller :

16Mhz crystal:

22pf capacitors:

female DC power jack socket:

terminal block connector:

Super Starter kit for Beginners

Jumper Wires:

Bread Board:

12v Adaptor:

Digital Multimeter:

Vero Board / strip board:

Soldering iron kit:  “best”  You guys should definitely purchase this kit:

Solder wire:

Wire Stripper:

wire cutter:

PCB small portable drill machine:

*Please Note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!

Circuit Diagram:

Solar Tracker

For the complete Solar Tracker Circuit diagram explanation watch Video Tutorial “Click Here


Atmega328 PCB board file: atmega328 board


Relay H-Bridge PCB board file: relay hbridge

These PCB “Printed Circuit Board” files can be opened in Cadesoft Eagle 9.1.0 Version.


Solar tracker Programming

Watch Video Tutorial:

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About the Author: Engr Fahad

My name is Shahzada Fahad and I am an Electrical Engineer. I have been doing Job in UAE as a site engineer in an Electrical Construction Company. Currently, I am running my own YouTube channel "Electronic Clinic", and managing this Website. My Hobbies are * Watching Movies * Music * Martial Arts * Photography * Travelling * Make Sketches and so on...

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