This document is Shishupal Kumar's project report on developing a digital home automation system using Arduino and Bluetooth. It includes declarations that the work is his own and for partial fulfillment of his Bachelor's degree. It is certified by his project supervisor Er. Mubashshir H. Ansari. Shishupal thanks his department head, project guide, and other faculty for their support and guidance. The abstract explains that the project involves interfacing an Arduino board with a Bluetooth module to remotely control home loads like lights and fans using an Android phone app.

1. i
DECLARATION
I, Shishupal Kumar (1422121006), declare that I have done to the best of my ability and
knowledge to complete the project on “Digital Home Automation with Arduino
Bluetooth”. The information has been collected from genuine and authentic source. The
work has been submitted in partial fulfillment of Bachelor of Technology. Institute of
Engineering and Technology Sitapur, Sitapur.
I declare that my report on the above topic is completed in all aspects and this report is
the result of steady effort during training period.
Date………………….
Shishupal Kumar

2. ii
CERTIFICATE
This is to certify that the project report entitled “DIGITAL HOME AUTOMATION
WITH ARDUINO BLUETOOTH” submitted by Shishupal Kumar (1422121006)” in
partial fulfillment of requirements for the award of the Degree Bachelor of Technology in
“ELECTRICAL AND ELECTRONICS ENGINEERING” is a record of the work
carried out under my guidance and supervision at INSTITUTE OF ENGINEERING
AND TECHNOLOGY, SITAPUR.
I have assigned a project work on “DIGITAL HOME AUTOMATION WITH
ARDUINO BLUETOOTH”.
This overall performance is rated as excellent/very good.
Supervisor- Name……………………
Er. Mubashshir H. Ansari Date……………………
Assistant Professor External Examiner

3. iii
ACKNOWLEDGEMENT
I am grateful to Dr. Manikant Kumar (Head of Department) Electrical Engineering,
I.E.T. Sitapur, for granting me the permission to work on my project “DIGITAL
HOME AUTOMATION WITH ARDUINO BLUETOOTH”, which is the one of the
best idea in India with excellent performance.
I also pay thanks to Er. Mubashshir H. Ansari, Project Guide, I.E.T SITAPUR, for
his invaluable suggestion throughout the project.
I also pay thanks to Er. Saqib Ansari, Assistant Professor, I.E.T. SITAPUR, for
helping us and giving ideas during project.
I would also like to thank our family and all my friends for helping us out of any trouble
during the work. In the end, I would like to thank the Almighty God for providing us the
opportunity.
SHISHUPAL KUMAR (1422121006)
(Electrical and Electronics Engineering B.Tech Final Year)

4. iv
ABSTRACT
The main objective of this project is to develop a home automation system using an
Arduino board with Bluetooth being remotely controlled by any Android OS smart
phone. As technology is advancing so houses are also getting smarter. Modern houses are
gradually shifting from conventional switches to centralized control system, involving
remote controlled switches. Presently, conventional wall switches located in different
parts of the house makes it difficult for the user to go near them to operate. Even more it
becomes more difficult for the elderly or physically handicapped people to do so. Remote
controlled home automation system provides a most modern solution with smart phones.
A Bluetooth module is interfaced to the Arduino board at the
receiver end while on the transmitter end, a GUI application on the cell phone sends
ON/OFF commands to the receiver where loads are connected. By touching the specified
location on the GUI, the loads can be turned ON/OFF remotely through this technology.
The loads are operated by Arduino board through opto-isolators and thyristors using
triacs.

5. v
LIST OF FIGURES
Figures. Page no.
Fig.1.1. Block Diagram of “Digital home Automation with Arduino Bluetooth” 4
Fig.2.1. Circuit Diagram of “Circuit home Automation with Arduino Bluetooth” 7
Fig.4.1. Arduino UNO 12
Fig.4.2. Programming of Arduino IDE 14
Fig.5.0. HC-05 Bluetooth module 18
Fig.5.1. HC-05 Bluetooth Pin Description 20
Fig.5.2. HC-05 Bluetooth Module interfacing with Arduino UNO 21
Fig.5.3. Arduino source code on HC-05 Bluetooth 22
Fig.6.1. Resister 25
Fig.6.2. Fixed Type Resister 26
Fig.6.3. Variable type Resister 27
Fig.6.4. Color code of Resister 28
Fig.7.1. 2N2222NPN Transistor 31
Fig.8.1. Diode of 1N4007 34
Fig.8.2. 1N4007 Diode pin Diagram 35
Fig.8.3. Electrical characteristics of 1N4007 Diode 36
Fig.8.4. Characteristics 1N4007 Diode 38
Fig.9.1. Internal circuit Diagram of Relay 40
Fig.9.2. Relay 41
Fig.9.3. Relay Energizd(ON) 42
Fig.9.4. Relay De-energizd(OFF) 42
Fig.9.5. Relay Variation 43
Fig.10.1. Bluetooth Enabled 47
Fig.10.2. Block Diagram of Bluetooth communication 48
Fig.10.3. Digital Home Automation With Arduino Bluetooth of Layout 51

6. vi
TABLE OF CONTANTS
TITLE PAGE NO.
DECLARATION i
CERTIFICATE ii
ACKNOWLEDGMENT iii
ABSTRACT iv
LIST OF FIGURES v
LIST OF ABBREVIATIONS vi-viii
CHAPTER-1 INTRODUCTION 2-4
1.0. Introduction 3
1.1. Objective of project 4
1.2. Block diagram of digital automation with Arduino Bluetooth 4
CHAPTER-2 EXPLANATION OF CIRCUIT DIAGRAM 5-7
2.0. Working 6
2.1. Circuit Diagram of digital automation with Arduino Bluetooth 7
CHAPTER-3 COMPONENT USED 8-9
3.0. Component Description 9
CHAPTER-4 WORKING OF DIGITAL AUTOMATION ARDUINO 10-16
BLUETOOTH
4.0. Arduino 11-12
4.1. Software Requirement 12-14
4.2. Some Technical Specification of Arduino UNO 15
4.3. Application of Arduino UNO 15-16
4.4. Advantage of Arduino UNO 16
4.5. Disadvantage of Arduino UNO 16
4.11. Limitation of solar energy
CHAPTER-5 HC-05 BLUETOOTH MODULE 17-23
5.0. HC-05 Bluetooth module 18-19
5.1. Hardware Feature of HC-05 Bluetooth 19
5.2. Software Feature of HC-05 Bluetooth 19

7. vii
5.3. Pin Description of HC-05 Bluetooth 19-20
5.4. HC-05 Bluetooth Module Interfacing with Arduino UNO 21
5.5. Arduino Source code on HC-05 Bluetooth 22
5.6. Advantages of HC-05 Bluetooth 23
5.7. Application of HC-05 Bluetooth 23
CHAPTER-6 RESISTOR 24-29
6.1. Introduction of Resistor 25
6.2. Types of Resistor 26
6.3. Variable Type of Resistor 27
6.4. Actual Types of Resistor 28
6.5. Application of Resistor 29
6.6. Advantages of Resistor 29
6.7. Disadvantages of Resistor 29
CHAPTER-7 2N2222NPN TRANSISTOR 30-32
7.1. Introduction of 2N2222NPN Transistor 31
7.2. Pin Description of 2N2222NPN Transistor 31
7.3. Advantages of 2N2222NPN Transistor 31-32
CHAPTER-8 1N4007 DIODE 33-38
8.1. Introduction of Diode 34
8.2. 1N4007 Pinout 35
8.3. 1N4007 Pin Configuration 35
8.4. Mechanical Data if 1N4007 diode 36
8.5. Electrical Characteristics of 1N4007 Diode 36
8.6. Features of 1N4007 Diode 37
8.7. Application of 1N4007 Diode 37
8.8. Characteristics of 1N4007 Diode 38
CHAPTER-9 12V RELAYS 39-45
9.1. Introduction of Relays 40
9.2. Working Principle of Relay 41
9.3. Relays Operation 42
9.3.1. Relay Energized

8. viii
9.3.2. Relay De-energized
9.4. Relay Variations 43
9.5. Application of Relay 44
9.6. Advantages of Relay 44
9.7. Disadvantages of Relay 45
CHAPTER-10 SMARTPHONE OR TABLET 46-50
(BLUETOOTH ENABLED)
10.1. Introducation of Bluetooth Enabled 47
10.2. Working of Bluetooth Enabled 48
10.3. Application of Bluetooth Enabled 49
10.4. Advantages of Bluetooth Enabled 49
10.5. Disadvantages of Bluetooth Enabled 49-50
LAYOUT OF PROJECT 51
CONCLUSION 52
FUTURE EXTENSION OF THE PROJECT 53
REFERENCES 54
APPENDIX I 55