Smart Home System using IOT

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 04 Issue: 11 | Nov -2017 www.irjet.net p-ISSN: 2395-0072
© 2017, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 1108
SMART HOME SYSTEM USING IOT
M L Sharma1, Sachin Kumar2, Nipun Mehta3
1Head of Dept., Dept. of Information Technology, MAIT Rohini, New Delhi, India
2,3 Student, Dept. of Information Technology, MAIT Rohini, New Delhi, India
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Abstract -Mobile devices are the part of our day-to-day life
from last few years. Consequently, providing facilities and
security are becoming increasingly prominent features on
mobile devices. In this paper, we have to develop a home
automation system that interfaces with Android mobile
devices. The mobile device and system can communicate with
each other via Wi-Fi. The mobile application can be loaded
and interfaces with system from any compatible device.
Commands to ON/OFF electrical equipment like lights, fans,
air conditioners etc. and setting timer at home or any
organization can be sent easily and quickly from the mobile
devices via a simple and comfortable GUI application, whichis
easy to use for the any normal users. The system then acts and
respond to these commands by taking actions per commands
and gives the result to the user. The user can also seetheresult
on Android mobile application within the range of Wi-Fi.
Therefore, it's a good choice to design a home automation for
luxurious life that aims at designing an advanced home
automation system using Wi-Fi technology.
1. INTRODUCTION
In nowadays, development and changes of technologies is
happening daily as well as continuous improvement of
people's living standards are increasing. The mobile phones
are the inspirable part of human lives today. The mobile
phone is the most important part of human lives today.With
the help of this smart gadgets human can do many works
with or without internet like here we can make our home as
well as organization smarter or more luxurious. Here we
proposed a new technology, so that mobile phones can be
used to communicate with and control electrical appliances
like Fans, A.C., Lights etc. using Android App and Wi-Fi
module. The transmitter of Wi-Fi transmitsthedata givenby
the application using radio waves technology. The Wi-Fi
works on radio waves technology, as the data to be passed
through Wi-Fi is converted into the electromagnetic signal
which is then sent using the antenna. This signal is passedto
the Arduino controller. The Arduino further operates the
received information and performs operations. This
controller can be connected to the Relays of different
switches to pass the current after generating the magnetic
field. In future, we can use router for a widerangeaccesslike
for the Smart City projects. New appliances can be added
anytime to the system, which provides for the reliability of
the system.
Automation is the most frequently spelled term in
the field of electronics. The hunger for automation brought
many revolutions in the existing technologies. These had
greater importance than any other technologies due to its
user-friendly nature. These can be used as a replacement of
the existing switches in home which produces sparks and
also results in fire accidents in few situations. Considering
the advantages of Wi-Fi anadvancedautomationsystemwas
developed to control the appliances in the house.
2. LITERATURE SURVEY
Papers we referred for literature survey,
 “Home Automation and Security System”
(Surinder Kaur, Rashmi Singh, Neha Khairwal and
Partyk Jain)
Easy Home or Home automation plays a very important role
in modern era because of its flexibility in using it at different
places with high precision which will save money and time
by decreasing human hard work. Prime focus of this
technology is to control thehouseholdequipment’slikelight,
fan, door, AC etc. automatically. This research paper has
detailed information on Home Automation and Security
System using Arduino, GSM and how we can control home
appliances using Android application. Whenever a person
will enter into the house then the count of the number of
persons entering in the house will be incremented, in Home
Automation mode applicances will be turned on whereas in
security light will be turned on along with the alarm. The
count of the number of persons entering the house is also
displayed on the LCD screen. In Home Automation mode
when the room will become empty i.e. the count of persons
reduces to zero then the applicances will be turned off
making the system power efficient. Moreover a person can
control his home appliances by using an android application
present in his mobile phone which will reduce the human
hard work. At the same time if anyone enters while security
mode is on a SMS will be sent to houseowner’smobilephone
which will indicate the presence of a person inside the
house. The alarm can be turned of using SMS or Android
application.

 “Home Automation using Internet of Things”
(Pooja Patel, Mitesh Patel, Vishwa Panchal andVinit
Nirmal)
The main aim of the project is to develop a system that will
provide remote control of home appliances andalsoprovide
security against the mishaps when the home host is not at
home. This paper is mainly concerned with the automatic
control of light or any other home appliances using internet.
It is meant to save the electric power and human energy.
This project is made with the help of controller and
raspberry pi. The various appliances connected to the micro
controller and sensor is connected using wireless network.
 “A Survey on Internet of Things Based on Home
Automation” (Pooja N.Pawar, Shruti
Ramachandran, Nisha P.Singh and Varsha V.Wagh)
A low cost and user friendly smart home system, which uses
an Android application to communicate with the cloud and
provides switching functionalities, is presented. The System
eliminates the use of Personal Computer (PC) and other
Computer Peripherals whichleadstooverall reductionin the
cost of the system. Unlike the similar system which uses
either of the Bluetooth module network, the proposed
system uses Internet of Things (IoT) for monitoring and
controlling the Electrical/Electronic Appliances, remotely.
Switches of Electrical /Electronic appliances are integrated
to the system in order to demonstrate the effectiveness and
feasibility of the system.
 “Review Paper on Home Automation Using
Internet of Things” (Aarti and Pooja Mittal)
It is Internet of Things (IOT) which allows objects to be
sensed & controlled remotely across existing network
infrastructure, creating opportunities for more direct
integration of physical world into computer-based systems,
& resulting in improved efficiency, accuracy & economic
benefit. End-to-end health monitoring IoT platforms are
coming up for antenatal & chronic patients, helping one
manage health vitals & recurring medication requirements.
In this paper we use IOT for energy efficient Environmental
Conditions sensing and in Home Automation. We have
discussed the roles of IOT in automation in this papers and
we have also discussed thatintegrationofsolarbased energy
system with IOT for homeautomation.Integrationofsensing
& actuation system by connecting to internet is discussed
here. Efficient power balance and generation& energyusage
is the objective of research.
3. SYSTEM DESIGN
Fig.1: System Architecture In this proposed system
Fig.1 illustrates the overall control function of the system.
The projected system works using the smart phone Android
application, which is the main source for giving the
instruction to the Wi-Fi module.
From user side, user can select the option, which switch
he/she wants to switch ON/OFF or set timer from their
Android smart phone Application.Thiscommandgoestothe
Wi-Fi module. Wi-Fi modules transmitter convert it into
signals and send that command to the receiver of the
Arduino Uno microcontroller. After that controller activates
that particular I/O pin on the board and send input to the
Relay. In that Relay, which has already 230V power supply,
after receiving current it generates electromagnetic field in
coil and passes the 12V current to switch ON the light. User
can select the option from anywhere in remote access area
network, which is near about 100 m from Wi-Fi module.
4. SOFTWARE DESIGN
4.1Wi-Fi on Android Mobile Device:
Wi-Fi is a local area wireless computer networking
technology that allows electronic devices to connect the
network and intended to replace cables on devices such as a
phones and other mobile devices. The firstversionofthe Wi-
Fi IEEE 802.11 protocol was released in 1997, and provided
up to 2 Mbit/s link speed. This was updated in 1999 to
permit 11Mbit/s link speed. Wi-Fi technology features long
range security, low power consumption which increases
battery life of mobile devices. The Wi-Fi signal range
depends on the frequency band, radio power output,
antenna gain and types as well as modulationtechnology. An
access point compliant with either802.11bor802.119,using
stock antenna might have a range of 100 m. The same radio
with an external semi parabolic antenna might have a range
over 20 miles. A Wi-Fi signal occupies 5 channels in 2.4 GHz
band, large apartments complexes or office building can
create problems in access of Wi-Fi network.

Android is an Operating System for smart phone devices on
which we can run our application. Android provides healthy
array of connectivity options including Wi-Fi,Bluetoothand
wireless data over a cellular connection. Android provides
access to a wide range of useful libraries and tools that can
be used to build rich applications. To design our system we
use Android latest versionwhichsupportsApplicationof our
system without creating any problem. It is design with
increased use of different layouts, responsive animations
and transitions, padding, depth effects such as lighting and
shadows. It provides some major new platform features for
developers, with over 5,000 new APIs added for use by
applications.
4.2 Arduino UNO
The Arduino Uno is a microcontroller board based onthe AT
mega 168 or 328. It has 14 digital input/output pins and 6
Analog input/output pins. We generally use 8 to 13 pins for
input/ output. It needs 5V operating voltage and 7 to 12V
input voltage. It simply connect with a DC battery to get
started. It also have a reset button, to reset all previous
connections.
4.3 Wi-Fi Module
The module is based on the Institute of Electrical and
Electronics Engineers 802.11 standards. It supports
transparent transmission mode and multiple network
protocols. The Wi-Fi module is embedded based on the
universal serial port, Ethernet, wireless network interface
between the conversions. Themodulesintegrateall oftheRF
components required, removing, the need to perform
expensive RF design and test. It simply connectssensorsand
switches to the module I/O pins or UART interface. In this
project we had used ESP8226 Wi-Fi module. TheESP8266is
a low-cost Wi-Fi chip with full TCP/IP stack and
microcontroller unit capability producedbyShanghai-based
Chinese manufacturer, Espressif Systems.
5. WORKING
5.1Connecting the ESP8266 to an Arduino
The steps you need to take are simple. This is written for the
ESP8266-01 but you can find the pin out for other models
easily and use the same pins. First we will connect the
Arduino UNO to a breadboard:
Connect the Arduino’s 3v3 (3.3V) output to the red line on a
breadboard. The ESP8266 works with 3.3V and not 5V, so
this is necessary. If you want to connect other components
that use 5V, you can connect the 5V output to the other red
line of the breadboard, just make sure you don’t connect the
two.
 Connect GND (ground) to the blue line.
 Connect the RES or RESET pin to the blue line.
When you ground the reset pin, the Arduino works
as a dumb USB to serial connector, whichiswhatwe
want to talk to the ESP8266.
 Connect the RXD pin of the Arduino to the RX pin of
the ESP8266 (yellow color in the picture).
 Connect the TXD pin of the Arduino to the TX pin of
the ESP (green color in the picture). Usually, when
we want two things to talk to each other over serial,
we connect the TX pin of one to the RX of the other
(send goes to receive and the opposite). Here we do
not have the Arduino talk to the ESP8266 though,
our computer is talking to it via the Arduino.
 Connect the GND pin of the ESP to the blue line and
the VCC pin to the red line.
 Finally CH_PD goes to theredline,supposedlyitwill
not work if you do not connect this. According to
a discussion I found:
ESP-01 and ESP-03 were initially meant to be used as an
Arduino Wi-Fi module. In that aspect it made sense to break
out CH_PD so that the user could disablethedevice whennot
in use (to save power).
Fig.2: Arduino connection.
5.2USING ARDUINO IDE
In the Arduino IDE, you don’t need to choose a board, as
we’re not uploading anything to the ESP8266. Just choose
the right port in the Tools menu and go to Tools → Serial
Monitor. Then simply set your baud rate to 115200 (the
default ESP8266 firmware uses it) and your line endings
to Both NL & CR.
If you type AT in the message field and press enter, it should
respond with OK.
And since we talked about the CH_PD pin, remember that if
you want to flash the ESP8266youshouldconnecttheGPIO0
pin to GND (blue line), which puts the ESP into flash mode.

6. CONCLUSION
The proposed Home Automation System enhances mobility
and supports monitoring and control of devices from any
remote location within Wi-Fi range. Being a simple and user
friendly application it serves as an application of great help
to the old aged or physically disabled people. Thus, the
Internet of Things based Home Automation System is better
than all traditional existing Home Automation Systems.
7. SCOPE OF FUTURE ENHANCEMENT
This application can be further developed into system with
the following enhancements:
 Bill functionality can be added to the home
automation system which can predict bill of any
selected period.
 Gas leakage and light dimming functionality can
also be added in near future.
ACKNOWLEDGEMENT
We acknowledge the efforts and hard work by the experts
who have contributed towards development of the different
home automation systems. We take this opportunity to
express our profound gratitude and deep regards to our
guide Dr.ML Sharma(HOD,IT Department)forhis exemplary
guidance, monitoring and constant encouragement
throughout the course of this project.
REFERENCES
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Jain, “Home Automation and Security System” in Advanced
Computational Intelligence: An International Journal (ACII),
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[2] Pooja Patel, Mitesh Patel, Vishwa Panchal and Vinit
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Smart Home System using IOT

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