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• DIRE DAWA UNIVERSITY
INSTITUTE OF TECHNOLOGY
SCHOOL OF ELECTRICAL AND
COMPUTER ENGINEERING
CONTROL STREAM
TITLE;DESIGN SMART HOME
SECURITY SYSTEMUSING ARDUINO
ADVISOR NAME HAILEMICHAEL
PREPARED BY :
• NAME ID NO
• GEMECHU WARE DDI1200436
• TSADEKU FEKADU DDU1201449
• OUSMAN SEID DDU1201122
• MOHAMMED BEDRU DDU1200436
Introduction
• .Security describes protection of life and property.
• .It is protection from, or resilience against, potential harm (or other
unwanted coercion) caused by others, by restraining the freedom of others
to act.
• .A home security system is an essential aspect of ensuring the safety and
protection of our homes and loved ones. With advancements in technology,
smart home security systems have become increasingly popular due to
their convenience and effectiveness.
• .One such system is a smart home security system using arduino uno
• .Sensors play a crucial role in a smart home security system.
• The Arduino Uno microcontroller board is a versatile and widely used
platform that can be programmed to perform various tasks.
• When utilized in a home security system, the Arduino Uno acts as the
brain, controlling and monitoring different aspects of the system.
• The primary objective of a smart home security system is to detect any
potential threats or breaches and take appropriate actions to mitigate them.
• Motion sensors can detect any movement within specified areas, while
flamme sensors can detect unauthorized entry.
• Gas sensors can identify hazardous gases, such as carbon monoxide,
ensuring the safety of occupants.
• When a sensor detects an event, it sends a signal to the Arduino Uno,
which then processes the data and triggers an appropriate action.
• This could include activating an alarm, sending a notification to the
homeowner's smartphone, or even contacting emergency services.
Smart home security system
• A smart home is defined by its interconnected devices, communicating via
an internet connection.
• Thus, a smart home security system is a collection of security components
connected and controlled by arduino uno.
• Using technology-driven security innovations encourages higher levels of
protection and system availability, as well as increased peace of mind for
property owners that they can monitor their home from wherever.
• House security system is one of security that truly related to burglar or
safety alarm system.
• Burglar and safety alarms are found in electronic form nowadays.
• Sensors are connected to a control unit via either a low-voltage hardwire
which in turn connects to a means for announcing the alarm to elicit
response.
Problem Statement
• The problem statement for the smart home security system using Arduino
is to design and develop a reliable and efficient security solution that can
protect homes from intruders, monitor and detect potential hazards, and
provide remote access and control for homeowners.
• The system should be affordable, easy to install and use, and integrate
seamlessly with other smart devices in the home.
• The goal is to provide homeowners with a comprehensive and cost-
effective security system that ensures their safety and peace of mind.
• Security is important even if you have outstanding public safety agencies
in your area.
• So we would like to implement our project to do everything possible to
make your house secure rather than just relying on others.With the
increasing busy schedules people rely on machines to support them in this
modern world.
objective of the project
• The objective of the project resembles to the specific objective and
general objective.
• specific objective of the project;
• The specific objectives of a smart home security system using Arduino
Uno may include
• 1. Detecting unauthorized entry:
• 2. Identifying hazardous gases:
• 3. Monitoring movement within specified areas:
• 4. Activating alarms:
• 5.Sending notifications to the homeowner's smartphone:
• 6. Contacting emergency services:
• 7. Integration with other smart devices:
• 8. Enhancing home security:
General objective of the project:
.The general objective of a smart home security system using Arduino

Uno is to provide a comprehensive and effective security solution for
the home owner.
Significance of the project;

1. Enhanced security:The system can detect unauthorized entry through
door/window and activate alarms to deter intruders.
2. Hazard detection:The system can monitor for hazardous gases such as
carbon monoxide and notify the homeowner if dangerous levels are detected.
• 3. Motion detection: By monitoring movement within specified areas, the
system can detect suspicious activity or unexpected presence, triggering
alarms or sending notifications to the homeowner.
• 4. Remote monitoring and control: The integration with the homeowner's
smartphone allows them to remotely monitor their home's security status
and control various aspects of the system, providing convenience and
flexibility.
• 5. Emergency response: In case of emergencies, such as a break-in or gas
leak, the system can automatically contact emergency services, ensuring
quick response and assistance.
• 6. Integration with other smart devices: The system can be integrated with
other smart devices in the home, such as smart locks or cameras, allowing
for a seamless and interconnected security ecosystem.
• 7. Cost-effective solution: Arduino Uno is an affordable micro controller,
making this project a cost- effective alternative to expensive commercial
security systems.
SCOPE OF THE PROJECT
• Home security should have double meanings; one refers to the life and
safety, two-finger property theft.
• Traditional home security is to install a passive infrared detector, which is
characterized installed in the interior, so the room unattended, its role in the
protection of property theft can be achieved.
• Active infrared detectors, and its strong anti-interference performance, and
also mounted on the outside, the indoor human activity has nothing to do,
as long as the external entrance of your house equipped with active
infrared detectors, once someone enter the room, on the timely warning,
life security is guaranteed, the property is intact. Play a defensive back, the
consequences of a small purpose
1.7 Material required
•  Arduino UNO
•  Buzzer
•  Capacitor
•  Flame sensor
•  LCD 20×4
•  LM016L
•  LOGICSTATE
•  MQ-2 GAS SENSOR
•  PIR SENSOR
•  POT HG
•  SIM900D-GREEN
Hardware design
Arduino uno
• The Arduino Uno is a type of Arduino board that is provided as an open-
source board that uses an ATmega328p micro controller in the board.
• The Arduino Uno contains a set of analog and digital pins that are input
and output pins which are used to connect the board to other components.
• There are a total of fourteen I/O pins placed inboard in which six are
analog input pins. The board has a USB connection that can be used to a
power supply to the board. The board is used for electronics projects and
used to design the circuit.
• The Arduino UNO is categorized as a micro-controller that uses the
ATmega328 as a controller in it.
• The Arduino UNO board is used for an electronics project and mostly
preferred by the beginners. The Arduino UNO board I type of Arduino
board only.
Lcd(liquid crystal display)
• LCD (Liquid Crystal Display) screen is an electronic display module and
find a wide range of applications.The LCD stands for liquid crystal display,
that works on the light modulation features of liquid crystals.
• It is available in electronic visible display, video display and flat panel
display.
• There are numerous categories and features are exits in markets of LCD
and you can see it on your mobile, laptop, computer and television screen.
• The invention of LCD gives new life to electronic industries and replaces
lED and gas plasma techniques. It also replaces the CTR (cathode ray) tube
that used for visual display.
flame sensor
• A sensor which is most sensitive to a normal light is known as a flame
sensor. That’s why this sensor module is used in flame alarms.
• This sensor detects flame otherwise wavelength within the range of 760
nm – 1100 nm from the light source.
• This sensor can be easily damaged to high temperature.
• So this sensor can be placed at a certain distance from the flame.
• The flame detection can be done from a 100cm distance and the detection
angle will be 600. The output of this sensor is an analog signal or digital
signal.
• These sensors are used in fire fighting robots like as a flame alarm.
• A flame-sensor is one kind of detector which is mainly designed for
detecting as well as responding to the occurrence of a fire or flame.
Buzzer
• What is a Buzzer?
• An audio signaling device like a
beeper or buzzer may be
electromechanical or piezoelectric
or mechanical type.
• Generally, it is powered through

DC voltage and used in timers,
alarm devices, printers, alarms,
computers, etc.
• Based on the various designs, it
can generate different sounds like
alarm, music, bell & siren.
Gas sensor
• A Typical human nose has 400 types of scent receptors enabling us to
smell about 1 trillion different odours. But still many of us do not have
the capacity to identify the type or concentration of gas present in our
atmosphere.
• This is where Sensors comes in, there are many types of sensors to
measure different parameters and a Gas sensor is one which comes
handy in applications where we have to detect the variation in the
concentration of toxic gases in order to maintain the system safe and
avoid/caution any unexpected threats.
• There are various gas sensors to detect gases like oxygen, Carbon
Dioxide, Nitrogen, methane etc
• They can also be commonly found in devices that are used to detect
the leakage of the harmful gases, monitor the air quality in industries
and offices etc.
PIR SENSOR
Sensor is an electronic sensor that measures infrared light radiating from
objects. PIR sensors mostly used in PIR-based motion detectors.
Also, it used in security alarms and automatic lighting applications.
The below image shows a typical pin configuration of the PIR sensor,
which is quite simple to understand the pinouts.
What does a PIR Sensor detect?

Generally, PIR sensor can detect animal/human movement in a
requirement range
PIR is made of a pyroelectric sensor, which is able to detect different
levels of infrared radiation. The detector itself does not emit any energy
but passively receives it.
It detects infrared radiation from the environment.
METHODOLOGY
• 1.Research and Planning: This phase would involve
conducting research on smart home security systems,Arduino
Uno capabilities, and various sensors and modules that can be
integrated into the system.
• 2 .System Design: In this phase, the overall system design
would be created, including the selection of sensors, modules,
and shields that will be used.The connections and
interactionbetween these components would be planned, and
the user interface for monitoring and control would be
designed.
• 3. Hardware Implementation: This step would involve setting
up the Arduino Uno board and connecting the selected
sensors, modules, and shields according to the system design.
• 4. Software Development: The software for the system's monitoring and
control interface would be developed.
• 5. Testing and Debugging: Once the hardware and software components
are implemented, thorough testing would be conducted to ensure that the
system functions as intended.
• 6. Integration and Customization: After successful testing, additional
features or customizations could be added to the system based on the
user's specific needs. This could involve integrating additional sensors or
modules, or modifying the software to include specific functionalities.
• 7. Documentation and Deployment: Finally, documentation would be
created to provide instructions on how to set up and use the smart home
security system. The system would be deployed in the user's home, and
any necessary training or support would be provided.
System design Result
• The result of this project would be a fully functional smart home security
system that utilizes the Arduino Uno as its main platform.
• The system would be able to detect unauthorized entry or potential
hazards in the home through various sensors, and communicate alerts.
• The system would also have the capability for remote monitoring and
control, allowing the user to monitor their home's security status from
anywhere.
• Overall, the result of this project would be a comprehensive and
customizable smart home security system that provides peace of mind and
enhances the security of users home.
• Next, we need to connect these
components' pins to complete our
circuit,
CONCLUSION AND FUTURE
RECOMMENDATION;
• Conclusion
• In conclusion, the Arduino Uno can be a great platform for developing a
smart home security system.
• With its various input/output pins, it can easily interface with sensors
such as motion detectors, flame sensors,gas sensor and buzzer.
• These sensors can be used to detect any unauthorized entry or potential
hazards in the home.The Arduino Uno's USB interface allows for easy
communication with other devices, such as a computer or smartphone, to
receive alerts and notifications.
• The open- source nature of the Arduino Uno allows users to customize
and expand the security system according to their specific needs. They
can modify the code to add new features or integrate with other smart
home devices, such as smart locks or smart lighting systems.
• 6.2 Future recommendation; 1. If anyone have chance to
design this project again, he/she will add a phone dialer chip
and GSM modem. The system can be easily connected to the
personal computer for further control. 2. We can use this
system as an attendance register for the students to enter a
class room with their respective password. 3. The keypad and
LCD also offer great interface and users can be familiar with
our system in less than few seconds.

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• DIRE DAWA UNIVERSITY

.The general objective of a smart home security system using Arduino

Significance of the project;

• Generally, it is powered through

What does a PIR Sensor detect?

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