This document summarizes a research paper that aims to design a smart home system using IoT technology. The system allows users to control and monitor home appliances like lights and sensors via a smartphone app called Blynk. The system connects appliances and sensors to the internet using a NodeMCU microcontroller. Users can send ON/OFF commands from the Blynk app graphic interface to control loads connected to relays. The system was implemented successfully and provides remote smart home control using affordable IoT components like NodeMCU and Blynk server.

1. Implement of Smart Home via Blynk Private Server
ABSTRACT
Nowadays Internet of Things (IoT) is
part of the internet that all objects around us. IoT
has a very wide and includes variety of objects
like electronics product appliances and sensors
[4] This research paper aims to design a smart
home system by utilizing [3] and designed to
control and monitor appliances via smartphone
using Wi-Fi as communication protocol and
Blynk Private server. All the appliances and
sensors are connected to the internet via
NodeMCU Microcontroller [1] This IoT system
designed will help control electrical appliances
from anywhere. [2] Graphic User Interface of
application on the cell phone sends ON/OFF
commands to the receiver where loads are
connected. [4] . In this project the first thing to
do is to prepare the inputs and outputs of the
system to control the lights. The project shown
in the figure has been implemented and works as
expected and will prove to be very useful [7]
The loads are operated by IOT board through
Relay Module. [4] By using IoT technology is
advancing so houses are also getting smarter and
faster and also involving remote controlled
switches. [4] and The core system of this project
is adopted from the Blynk framework[1].
keyword:IoT,Smart Home, Blynk
INTRODUCTION
Internet of Things (IoT) is part of the internet
that envisions all objects around us. IoT has a
very wide and includes variety of objects like
electronics product i.e. smart phones, tablets,
digital cameras and sensors. [4]The growth of
the Internet of Things will reform a number of
sectors, like healthcare, automation, energy,
transportation, etc. The cloud computing can be
used in such case to implement the IoT
infrastructure that augmented with sensors and
actuators to monitor and control “things” from
anywhere [6] Although automation today is not
a new thing, but most advanced home
automation systems in existence today require a
big and expensive change of infrastructure [3].
LITERATURE REVIEW
Bharat Bohara and Sunil Maharjan (2016) study
IoT Based Smart Home Using Blynk
Framework the system is designed to switch to
automated state controlling the appliances
automatically as per the sensors readings. The
core system of this project is adopted from the
Blynk framework [1]
Tanvi G Pareek Raksha Padaki Anuradha Iyer
and Priya G (2017) develop App Based Device
Controlling System The app which has been
installed on the smart phone helps us to remotely
access devices and thus implement wireless
technology this IoT system designed will help
control electrical appliances from anywhere in
the university [2]
Kusay F. Al-Tabatabaie, Koraw Dara Hama
(2017) designed REMOTE AUTOMATION
SYSTEM CONTROL USING ARDUINO
BOARD The system is able to monitor and
control room temperature, lights, alarms and
other house appliance. Test bed shows proper
controlling and monitoring functionalities to a
network using Blynk application. It gives
powerful support for special needs of the elderly
and people with disabilities. [3]

2. V. A. Pohankar Prof. K. A. Dongre (2017)
Implementation of IoT for Smart Homes The
main objective is to develop a home automation
system using an Node MCU board with an IoT-
based device which is capable of controlling
appliances and real-time weather monitoring. [4]
Tejal Deshpande, Nitin Ahire (2017) made use
Home Automation Using the Concept of IoT
They present on how to create and build an IoT
enabled device and control the said device
wirelessly using smart phones. [5]
Kishore. P, T. Veeramanikandasamy, K.
Sambath and S. Veerakumar(2017) presented
Internet of Things based Low-Cost Real-Time
Home Automation and Smart Security System
This paper presents an Internet of Things based
real-time home automation and security system
using Arduino UNO and ESP8266 WiFi module
which makes the system cost-effective and
portable [6]
J.Arthi,
2
W.Lydiapreethi,
3
B. Gunasundari
(2017) implement IOT BASED SMART LED
STREET LIGHTING SYSTEM A method for
modifying street light illumination by using
sensor at minimum electrical energy
consumption ,when object presence is detected,
street lights glow at their brightest mode, else
they stay in the dim mode during night time
Internet of things (IOT) is used to visualize the
real time updates of street processing and
notifying the changes occur. [7]
HIRAL S. DOSHI , MINESH S. SHAH ,
UMAIR S A. SHAIKH (2017) study
INTERNET of THINGS (IoT): INTEGRATION
of BLYNK for DOMESTIC USABILITY we
are going to implement a simple yet effective
approach to build the IoT platform for remote
monitoring and sensing of data, home
automation, industrial automation and many
more. [8]
MEDTHODOLOGY
The proposed system was distributed among
home automation system, consists of server,
hardware interface modules. Server controls
hardware one interface module, and can be
easily configured to handle more hardware
interface module [3] The system consists of
microcontroller connected to sensors and
electrical devices that are to be monitored and
controlled. [1]
Figure 1. Smart Home Diagram
Blynk App–Blynk is the most user-friendly IoT
platform for a reason.It is a smartphone
application that allows us to create an interface
that interacts with Internet- connected hardware.
The interface can be freely downloaded into
smartphones, and can be used for remote
monitoring and control of IoT-controlled
devices. To prevent misuse and unauthorized
access, the application requires the user to enter
an authentication code, which is sent to them via
an email. Users may share this code with other
individuals they wish to grant access to. All data
is stored on the Blynk Server, and can be
exported by the user, in the form of a csv file.
This data can then be used for further analysis.
[2]

3. Figure 2. Blynk Application Diagram
The graphical interfaces in smart phones and
tablets are designed in the form of android and
iOS applications by putting buttons, graph-
plotter, LCD and sensor-value display. The user
can simply download the app, log in and then
monitor and control her entire home appliances
[1] The user can do so by using the blynk app as
it provides the controlling functionality from a
remote place. [8] In proposed approach first
discuss about the hardware component, software
application and online service [4]
NodeMCU
NodeMCU is an open source IoT stage. It
incorporates firmware which keeps running on
the ESP8266 Wi-Fi SoC from Espressif
Systems, and equipment which depends on the
ESP-12 module. The expression "NodeMCU" as
a matter of course alludes to the firmware
instead of the dev packs. The firmware utilizes
the Lua scripting dialect. It depends on the eLua
extend, and based on the Espressif Non-OS SDK
for ESP8266. It utilizes many open source
ventures, for example, lua-cjson, and spiffs.[10]
Relay
A transfer is an electrically worked gadget. It
has a control framework and (additionally called
input circuit or info contactor) and controlled
framework (likewise called yield circuit or yield
contractual worker). It is every now and again
utilized as a part of programmed control circuit.
Basically, it is a programmed change to
controlling a high-current circuit with a low-
current flag.[10]
Blynkk/Blynk Server
Blynk is a platform with iOS and Android apps
to control Arduino, ESP8266, Raspberry Pi and
the likes over the Internet.
You can easily build graphic interfaces for all
your projects by simply dragging and dropping
widgets. If you need more information, please
follow these links
Blynk Server is an Open-Source Netty based
Java server, responsible for forwarding
messages between Blynk mobile application and
various microcontroller boards and SBCs (i.e.
Arduino, Raspberry Pi. etc).[9]
Figure 3. Setting Local Blynk Server on Mobile

4. RESULTS AND DISCUSSION
In this project the first thing to do is to prepare
the inputs and outputs of the system to control
the lights. The project shown in the figure has
been implemented and works as expected and
will prove to be very useful [7]
Figure 4. Graphic User Interface
Graphic User Interface of application on the cell
phone sends ON/OFF commands to the receiver
where loads are connected. [4]
CONCLUSIONS
This research was conducted to design and
improve the standard living at home with low
cost, to control various home applications and
provide secure, ubiquitously accessible, auto-
configurable, remotely controlled solution [3]
The planed aims at home automation system
have been accomplished. Where system
designed and architecture had been discussed,
and basic level of home appliance control
prototype had been presented with implementing
remote monitoring. [3]
The loads are operated by IOT board through
Relay Module. [4] By using that technology is
advancing so houses are also getting smarter and
faster and also involving remote controlled
switches. [4] and The core system of this project
is adopted from the Blynk framework[1].

5. REFERENCES
[1] Bharat Bohara and Sunil Maharjan† (2016),IoT
Based Smart Home Using Blynk Framework ,
ZERONE SCHOLAR, VOL. 1, NO. 1,
NOVEMBER 2016
[2] Tanvi G Pareek,Raksha Padaki,Anuradha Iyer
and Priya G (2017)App Based Device Controlling
System , International Journal of Advanced
Research in Computer Science ,Volume 8, No. 5,
May-June 2017
[3] Kusay F. Al-Tabatabaie
1
, Koraw Dara Hama
2
(2017) REMOTE AUTOMATION SYSTEM
CONTROL USING ARDUINO BOARD,
International Journal of Latest Trends in
Engineering and Technology Vol.(8)Issue(3),
pp.161-167
[4] Mr. V. A. Pohankar1 Prof. K. A. Dongre2 (2017)
Implementation of IoT for Smart Homes,IJSRD -
International Journal for Scientific Research &
Development| Vol. 5, Issue 05, 2017 | ISSN (online):
2321-0613
[5] 1 Tejal Deshpande, 2 Nitin Ahire (2016) ,Home
Automation Using the Concept of IoT ,IJCSN
International Journal of Computer Science and
Network, Volume 5, Issue 3, June 2016 ISSN
(Online) : 2277-5420
[6] Kishore. P
1
, T. Veeramanikandasamy
2
, K.
Sambath
3
and S. Veerakumar
4
(2017)Internet of
Things based Low-Cost Real-Time Home
Automation and Smart Security System ,IJARCCE
international Journal of Advanced Research in
Computer and Communication Engineering ,Vol. 6,
Issue 4, April 2017 SSN (Online) 2278-1021 ,
[7]
1
J.Arthi,
2
W.Lydiapreethi,
3
B. Gunasundari
,(2017) IOT BASED SMART LED STREET
LIGHTING SYSTEM ,IJRTI | Volume 2, Issue 4 |
ISSN: 2456-3315
[8] HIRAL S. DOSHI
#1
, MINESH S. SHAH
#2
,
UMAIR S A. SHAIKH
#3
(2017) INTERNET of THINGS (IoT):
INTEGRATION of BLYNK for DOMESTIC
USABILITY ,VJER-Vishwakarma Journal of
Engineering Research www.vjer.in Volume 1 Issue
4, December 2017 ISSN: 2456-8465
[9] Blynk (2018) https://github.com/blynkkk
[10] Komsan Pitayaporn1,*
, Ongarj Wisesook2
,
Waris Rattananimit3
(2018) Controlled
Temperature of Smart Solar Dryer by Smart
Phone ,5th International Congress on
Technology Engineering & Science 01-02
February 2018 Malaysia.