Electronic Devices And Circuits Project Report 2022

Smart Home Using ARDUINO
Contents
Summary 3
1.0 Aim of Project 3
2.0 Significance of Home Automation 3
3.0 Introduction 4
4.0 Components Used In project 4
4.1Arduino 4-5
4.2LCD 5-6
4.3 Relay Board 6-8
4.4 DC Servo Motor 8
4.5 DC Motor 9
4.6 Bluetooth Module 9
4.7 Motor Driver 10
4.8 DH11 Module 10
4.9 Battery 11
5.0 Connection Wiring And Circuit Diagram 11-12
6.0 Working Of The Circuit 12
7.0 Conclusion 12
1

Summary
Home automation has now become a part of modern world.Keeping this in regard, we have
given a try in this, making a home automation prototype. Our model’s working is based on the
Arduino microcontroller. In our model, we used servo motors to incorporate opening and closing
of doors, 4-channel relay to switch LED bulbs, Bluetooth controlling relay and servo motors
which in turn is controlled by an android device, LCD containing DH11 sensor that shows
humidity and temperature of the surroundings and a RC car to give an automated touch as a
whole to our model.
1.0 Aim of Project:
To create awareness about home automation that shall play its part towards a smart world.
2.0 Significances of Home Automation:
Home Automation is an innovation in household technology that lets you take control of your
electrical devices with just a click of a button. You can also have control on your lights,
appliances, electrical outlets, heating and cooling systems etc. Automating your homes will help
you save time and effort so that you can focus more on other work increasing your productivity.
The automation system has sensors that can detect activity and can function in order to save
energy making a significant impact on your utility bills. Smart automation is safe and reliable
ensuring your family’s safety by providing continuous “smart” security and surveillance
services. Security camera, water sensors, smoke sensors can all be automated so that you and
your family always feel safe at the comfort of your ‘home’ .When connected with the Internet,
home devices are an important constituent of the Internet of Things.
3.0 Introduction:
As a fact, this 21st century is well known for its automations and robotics based on Artificial
intelligence interfacing with Internet Of things. Besides being used in offices, industries, mega
projects, security, military sector, and navigations, satellite systems,and automobiles,
cybersecurity now its turn of personal houses to become smart and self-operated.In this project,
we are providing enough automation that can be used in any common house. The project Smart
Home is operated by using Arduino (microcontroller) and control by the user via Bluetooth. Just
on a one click user can open doors, switching lights, fans, cameras, LCD, security alarms and
other appliances that he want to add in his house.
2

4.0 Components Used In Project:
We will be providing the detailed description of every component used in designing of our
Project.
4.1 Arduino UNO:
This microcontroller is based on the AT mega 328. There are total of 20 pins (0-19) out of which
6 are analog inputs which can also be used as general purpose pins, a ceramic resonator of
frequency 16MHz, an USB connection, a power jack and a reset button. It contains everything
needed to support a microcontroller.
Board Breakdown Here are the components that make up an Arduino board and what each of
their functions are:
1. Reset Button – This will restart any code that is loaded to the Arduino board
2. AREF – Stands for “Analog Reference” and is used to set an external reference voltage
3. Ground Pin – There are a few ground pins on the Arduino and they all work the same
4. Digital Input/output – Pins 0-13 can be used for digital input or output
5. PWM – The pins marked with the (~) symbol can simulate analog output
6. USB Connection – Used for powering up your Arduino and uploading sketches
7. TX/RX – Transmit and receive data indication LEDs
8. ATmega Microcontroller – This is the brains and is where the programs are stored
9. Power LED Indicator – This LED lights up anytime the board is plugged in a power source
10.Voltage Regulator – This controls the amount of voltage going into the Arduino board
11.DC Power Barrel Jack – This is used for powering your Arduino with a power supply
12.3.3V Pin – This pin supplies 3.3 volts of power to your projects
13.5V Pin – This pin supplies 5 volts of power to your projects
14.Ground Pins – There are a few ground pins on the Arduino and they all work the same
15.Analog Pins – These pins can read the signal from an analog sensor and convert it to digital
4.2 LCD:
3