This document describes a project to create a single axis solar tracking system using an Arduino. The system aims to maximize solar energy collection by automatically orienting a solar panel toward the sun from east to west. It uses an LDR sensor to detect light intensity, sends the information to an Arduino microcontroller which controls a servo motor to rotate the solar panel accordingly. Key components include an Arduino, servo motor, LDR sensor, resistor, and solar panel. The system allows for increased solar panel output and efficiency through continuous sunlight tracking.

1. Single Axis Solar Tracking
Using Arduino

2. Group Members
 Prashant Shrimal 191113268
 Abhishek Gupta 191113043
 Vidit Singhal 191113237
 Ayush Rusia 191113238
 Krishna Gupta 191113263

3. Objective
The aim of our projects is to utilize the maximum solar energy through solar panel. For this a
digital based automatic sun tracking system is proposed. This project helps the solar power
generating equipment to get the maximum sunlight automatically thereby increasing the
efficiency of the system. The solar panel tracks the sun from east to west automatically for
maximum intensity of light.

4. What is Solar Tracking
 A Solar tracker is a device used for orienting a solar photovoltaic panel or lens
towards the sun by using the solar or light sensors connected with the machine
(ex: stepper motor, servo motor, gas filled piston).

5. Need of Solar Tracking
 Increase Solar Panel Output
 Maximum efficency of the panel
 Maximize Power per unit Area
 Able to grab the energy through out the day

6. Types of Solar Tracking
Single Axis
Single Axis Solar Tracker can either
have horizontal or vertical axis
Double Axis
Double Axis Solar Tracker have both
horizontal and vertical axis

7. Advantages of Solar Tracker
 Simple
 Low cost
 Eco-Friendly
 We can monitor directly using PC
 Tracking accuracy is more
 Reduce the usage of power from power grid

8. Working Principle
 Auto-tracking control system composed of PLC, sensors, signal processing units,
PV cells, electromagnetic and mechanical motion control modules and power
supply systems.
 Panel detects the sun light strength to sensors
 The sensors output is given to the PLC which compares it and produces an
equivalent output so as to rotate the motor and align the panel in the direction of
sun

9. Components
• Arduino
• Servo motor sg90
• LDR sensor
• Resistor 10k
• Jumper wire
• Solar panel

10. Arduino
• Arduino is an open-source hardware
and software company, project, and
user community that designs and
manufactures single-board
microcontrollers and microcontroller
kits for building digital devices.
• Arduino board designs use a variety
of microprocessors and controllers.

11. Servo Motor SG90
• Servo motors are high torque motors
which are commonly used in robotics
and several other applications due to
the fact that it’s easy to control their
rotation.
• Servo motors have a geared output
shaft which can be electrically
controlled to turn one (1) degree at a
time.

12. LDR Sensor Resistor 10K

13. Jumper Wire
• Jumper wires are simply wires that
have connector pins at each end,
allowing them to be used to connect
two points to each other without
soldering.
• Jumper wires are typically used with
breadboards and other prototyping
tools in order to make it easy to
change a circuit as needed

14. Solar Panel
• solar panel is an assembly of
photovoltaic solar cells mounted in a
(usually rectangular) frame.
• Solar panels capture sunlight as a
source of radiant energy, which is
converted into electric energy in the
form of direct current (DC) electricity.

15. Circuit Diagram

16. Flow Chart

17. Code