Automatic Streetlight System Using LDR and Arduino UNO. An electronics short project done by students of Mechanical Engineering,IUBAT. This Arduino based project will provide a competent method for lighting systems and make the whole process of energy saving easierand efficient. With a capability to change the amount of light emitted depending upon the outside condition is no doubt an innovationwith many future application apart from the fact that it can also be used in many present day tech such as street light, parklights, industrial lights and many more.

1. AUTOMATIC SREETLIGHT SYSTEM USING LDR
& ARDUINO UNO
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 1

2. Group Name : L
Group Members:
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 2
NAME ID
Rejvi Ahmed 13307132
Ratan Kurmi 08207020
Misbaur Rahman 13107046
Md. Imran Nazir 14107032

3. CONTENTS
• Introduction
• Objectives
• Project Overview
• Circuit Diagram
• Equipments
• Equipments Description
• Advantages
• Applications
• Conclusion
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 3

4. INTRODUCTION
We need to save or conserve energy because most of the energy
sources we depend on, like coal and natural gas can’t be
replaced. Once we use them up , they are gone forever. Saving
power is very important, instead of using the power in
unnecessary times it should be switched off. In any city “STREET
LIGHT” is one of the major power consuming factors. Most of the
time we see streetlights are on even after sunrise thus wasting
lot of energy. Over here we are avoiding the problem by having
an automatic system.
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 4

5. OBJECTIVES
• to design an automatic streetlight that works in conventional
energy resources
• Using LDR we control the street light, when the LDR value falls
above the threshold value the lights are switched on and when
the value falls below the threshold value the lights are switched
off .
• to save and conserve energy in an efficient way an intensity
controller.
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 5

6. PROJECT OVERVIEW
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 6

7. IMAGE OF PRACTICAL USED
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 7
In Sunlight In Darkness

8. CIRCUIT DIAGRAM
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 8

9. ARDUINO PROGRAM
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 9

10. EQUIPMENTS
Name Quantity(pcs)
• LDR (Light Dependent Resistor) 1
• Arduino UNO 1
• Transformer 1
• Capacitor 5
• Resistor 4
• LED 3
• Transistor 4
• Diode 2
• Vero Board 1
• Connecting Wire As Needed
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 10

11. COMPONENTS DESCRIPTION
• LDR : Light Dependent Resistor as the name
suggest the resistance is dependent upon the light
incident on it.
The light dependent resistor resistance changes with
intensity of light, with increase in light intensity the
resistance offered by the sensor decreases and with
decrease in light intensity the resistance offered by
the sensor increases. Hence it acts as variable resistor
with change in light intensity. These helps in finding
the amount of light intensity at that instant of time
and thus helping in regulating the lighting of our
lighting system accordingly.
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 11

12. COMPONENTS DESCRIPTION
• ARDUINO: Arduino is an open-source physical platform based on microcontroller board having the
ATmega32 series controllers and Integrated Development Environment for writing and uploading codes to
the microcontroller.
It has input and output pins for interaction with the
outside world such as with sensors, switches, motors
and so on. To be precise it has 14 digital input/output
, 6 analog inputs, a 16 MHz quartz crystal, a USB
connection, a power jack, an ICSP header and a reset
button. It contains everything needed to support the
microcontroller .It can take supply through USB or
we can power it with an AC-to-DC adapter
or a battery Arduino acts as the processing module of the
system. It takes input from the LDR, process the data and
gives the output to LEDS or through a transistor mechanism.
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 12

13. Components Description
• Resistor: Resistor is an electrical
component that reduce the electric current.
Capacitor: A capacitor is commonly used for
filtering and store charge in it.
Diode: A diode is an electrical component
that conducts current in one direction and
blocks current from flowing in the other direction.
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 13

14. Components Description
• Transformer: The voltage would down by the
transformer. The working principle of transformer
is very simple. It depends upon Farada’s law ,
mutual induction between two or more winding
is responsible for transformation action in an electric
transformer.
• Transistor: A transistor is a device that
regulates current or voltage flow and acts
as a switch or gate for electronic signals.
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 14

15. ADVANTAGES
• No man power required.
• Simple Construction.
• Efficient method.
• Less Consumption of electrical energy.
• Less maintenance.
• Cheap and economical.
• Light Sensors used have high sensitivity and are Easily
implementable.
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 15

16. APPLICATIONS
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 16
•Parking Lightings
•Street Lights
•Garden Lights
•Highways

17. CONCLUSION
This Arduino based project will provide a competent method for
lighting systems and make the whole process of energy saving easier
and efficient. With a capability to change the amount of light emitted
depending upon the outside condition is no doubt an innovation
with many future application apart from the fact that it can also be
used in many present day tech such as street light, park
lights, industrial lights and many more. The usage of the smart lighting
system will undoubtedly change the world that we see today
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 17

18. ANY QUESTION?
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 18

19. THANK YOU
REJVI AHMED, Dept. of Mechanical Engineering, IUBAT 19