Abstract
The main objective of this project was to ensure a proper security to building against theft or intruder. The circuit uses PIR and Controller which was wired as a timing circuit. This device functions as a major security alarms  used in residential, commercial, industrial, and military properties for protection against burglary (theft) or property damage, as well as personal protection against intruders . It is an electronic device that is connected to the battery being installed in and gets activated when the owner of the building is leaving the building by moving the switch to the “set” position. When the system is in this “set” position, if intruder open and enters the building the light will come up and the alarm will start to blow after 20 seconds indicating that unauthorized has entered the building. The device and the “sensor” switch are not seen but, it has an indicator light which shows that the alarm has been activated and it can only be reset automatically.

Introduction
The need for having home protection has always been there. But in the recent times, considering a dramatic rise in petty crimes like robbery and theft, the need has been more strongly felt to have a fool proof protection of the belongings and the family members. Home security has come a long way in the last few decades. It was in the hands of a guard who manually provided surveillance during nights in the earlier days, but it was not fool proof as it was only normal for him to have momentary lapse of concentration. The guard was also susceptible to sleep at times. It was then that home alarm system based upon electronic circuits were developed which proved to be highly reliable and were appreciated by the people as they were relieved from constant monitoring of their homes. This intrusion alarm system uses PIR sensor and a controller

Aim and objective
 The main aim and objective of the design and construction this project is to create a comfort in the minds of house owners when they out from their premises without much fear of intruder.
Significance of the project
 This device functions as an electronics watch dog. This device functions as a major security alarms  used in residential, commercial, industrial, and military properties for protection against burglary (theft) or property damage, as well as personal protection against intruders.
                                              Purpose of the project
This project proposes the development of security system for form houses and residential houses.
                                                 Scope of the project
In an extremely mechanized word such as today’s it is necessary to make our life better, convertible and economical. This is the purpose for which the Electronic house is developed.
                                          Application of the project
This device is used in the following places as:
a.     Home Security Systems.
b.     Prisons Security.
c.      Vehicle Security.
d.     Broadband alarm monitoring.
e.      Glass Break.
f.       Property Theft Alarm

Literature review
Sensors/motion sensors
Motion sensors are types of electronic security device that senses movement and usually triggers an alarm. Many types of motion sensors can sense motion in total darkness, without an intruder becoming aware that an alarm has been triggered. Motion sensors are an important part of most burglar alarm systems. They help alert security personnel, especially in situations where no obvious break-in has occurred. For instance, if an intruder steals a key to gain access to a protected site or hides within the site during normal business hours, the intruder’s entrance or presence could go unnoticed. A motion sensor will detect the intruder’s movements as soon as he or she walks or otherwise moves within the area protected by the detector. Motion sensors usually protect indoor areas, where conditions can be more closely controlled. Sensors for use in homes usually detect movement in spaces about 11 m × 11 m (35 ft × 35 ft) in area. Sensors for large warehouses can protect areas with dimensions as large as 24 m × 37 m (80 ft × 120 ft).Buildings with valuable or important assets, such as museums, also use motion sensors to detect break-ins at vulnerable points. Such points include walls, doors, windows, skylights, and even air ducts. Special motion sensors can protect the inside of exhibit cases where items such as diamonds are displayed. Others can be focused to a narrow area of coverage, somewhat like a curtain, that is projected in front of a painting to detect even the slightest touch. Motion sensor systems use a variety of methods to detect movement. Each method has its advantages and disadvantages. Some of the methods are discussed below.

Passive infrared sensor 
A Passive Infrared sensor (PIR sensor) is an electronic device that measures infrared (IR) light radiating from objects in its field of view. PIR sensors are often used in the construction of PIR-based motion detectors. Apparent motion is detected when an infrared source with one temperature, such as a human, passes in front of an infrared source with another temperature, such as a wall http://www.gadgetshack.com/motionsensor.html. All objects emit what is known as black body radiation. It is usually infrared radiation that is invisible to the human eye but can be detected by electronic devices designed for such a purpose. The term passive in this instance means that the PIR device does not emit an infrared beam but merely passively accepts incoming infrared radiation. “Infra” meaning below our ability to detect it visually, and “Red” because this color represents the lowest energy level that our eyes can sense before it becomes invisible. Thus, infrared means below the energy level of the color red, and applies to many sources of invisible energy. http://steveslockandsafe.com/venice-locksmith-home-security-technicians-notebook/Infrared.  radiation enters through the front of the sensor, known as the sensor face. At the core of a PIR sensor is a solid state sensor or set of sensors, made from an approximately 1/4 inch square of natural or artificial pyroelectric materials, usually in the form of a thin film, out of gallium nitride (GaN), caesiumnitrate (CsNO3), polyvinyl fluorides, derivatives of phenylpyrazine, and cobalt phthalocyanine. Lithiumtantalate (LiTaO3) is a crystal exhibiting both piezoelectric and pyroelectric properties. ].The sensor is often manufactured as part of an integrated circuit and may consist of one (1), two (2) or four (4) 'pixels' of equal areas of the pyroelectric material. Pairs of the sensor pixels may be wired as opposite inputs to a differential amplifier. In such a configuration, the PIR measurements cancel each other so that the average temperature of the field of view is removed from the electrical signal; an increase of IR energy across the entire sensor is self-cancelling and will not trigger the device. This allows the device to resist false indications of change in the event of being exposed to flashes of light or field-wide illumination. (Continuous bright light could still saturate the sensor materials and render the sensor unable to register further information.) At the same time, this differential arrangement minimizes common-mode interference, allowing the device to resist triggering due to nearby electric fields. However, a differential pair of sensors cannot measure temperature in that configuration and therefore this configuration is specialized for motion detectors. In a PIR-based motion detector (usually called a PID, for Passive Infrared Detector), the PIR sensor is typically mounted on a printed circuit board containing the necessary electronics required to interpret the signals from the pyroelectric sensor chip. The complete assembly is contained within a housing mounted in a location where the sensor can view the area to be monitored. Infrared energy is able to reach the pyroelectric sensor through the window because the plastic used is transparent to infrared radiation (but only translucent to visible light). This plastic sheet also prevents the intrusion of dust and/or insects from obscuring the sensor's field of view, and in the case of insects, from generating false alarms. A few mechanisms have been used to focus the distant infrared energy onto the sensor surface. The window may have multiple Fresnel lenses molded into it. Alternatively, some PIDs are manufactured with internal plastic, segmented parabolic mirrors to focus the infrared energy. Where mirrors are used, the plastic window cover has no Fresnel lenses molded into it. This filtering window may be used to limit the wavelengths to 8-14 microns which is closest to the infrared radiation emitted by humans (9.4microns being the strongest).The PID can be thought of as a kind of infrared camera that remembers the amount of infrared energy focused on its surface. Once power is applied to the PID, the electronics in the PID shortly settle into a quiescent state and energize a small relay. This relay controls a set of electrical contacts that are usually connected to the detection input of a burglar alarm control panel. If the amount of infrared energy focused on the pyroelectric sensor changes within a configured time period, the device will switch the state of the alarm relay. The alarm relay is typically a "normally closed (NC)" relay, also known as a "Form B" relay. A person entering a monitored area is detected when the infrared energy emitted from the intruder's body is focused by a Fresnel lens or a mirror segment and overlaps a section on the chip that had previously been looking at some much cooler part of the protected area. That portion of the chip is now much warmer than when the intruder wasn't there. As the intruder moves, so does the hot spot on the surface of the chip. This moving hot spot causes the electronics connected to the chip to de-energize there lay, operating its contacts, thereby activating the detection input on the alarm control panel. Conversely, if an intruder were to try to defeat a PID, perhaps by holding some sort of thermal shield between himself and the PID, a corresponding 'cold' spot moving across the face of the chip will also cause the relay to de-energize — unless the thermal shield has the same temperature as the objects behind it.

Ultrasonic sensors
Ultrasonic sensors (also known as transceivers when they both send and receive) work on a principle similar to radar or sonar which evaluate attributes of a target by interpreting the echoes from radio or sound waves respectively. Ultrasonic sensors generate high frequency sound waves and evaluate the echo which is received back by the sensor. Sensors calculate the time interval between sending the signal and receiving the echo to determine the distance to an object. This technology can be used for measuring: wind speed and direction (anemometer), fullness of a tank and speed through air or water. For measuring speed or direction a device uses multiple detectors and calculates the speed from the relative distances to particulates in the air or water. To measure the amount of liquid in a tank, the sensor measures the distance to the surface of the fluid. Further applications include: humidifiers, sonar, medical ultrasonography, burglar alarms and non-destructive testing. Systems typically use a transducer which generates sound waves in the ultrasonic range, above 20,000hertz, by turning electrical energy into sound, then upon receiving the echo turn the sound waves into electrical energy which can be measured and displayed. Some older burglar alarm systems use ultrasound (sound of very high frequency) to detect motion. They are called ultrasonic motion detectors. In such a detector a transmitter sends out sound of a frequency that is too high for the human ear to hear. A receiver picks up the sound waves reflected from the room or area under protection. The motion of someone or something in the space between the receiver and transmitter will cause a change, or shift, in the frequency of the sound. A circuit in the device detects any unusual shift in the frequency. A small shift, such as that produced by an insect or rodent, is ignored. When a larger shift, such as one produced by a moving person, is detected, the device triggers the alarm. Ultrasonic detectors are extremely sensitive, and can sometimes be triggered by loud noises or air gusts from an open vent. The frequency shift discussed above is also known as the Doppler Effect, which results from the behavior of sound waves when they are compressed by a moving object. Ultrasonic motion detectors use the Doppler Effect to detect movement. The detector’s circuitry compares the frequency of the sound that is emitted by the transmitter when no motion is present to the frequency that results when motion occurs. When no motion is present, the sound is emitted and bounces back in an even, steady pattern. When motion occurs, the sound waves are disturbed and the circuit detects the shift.

Burglar alarm systems
Burglar (or intrusion), alarms are electronic alarms designed to alert the user to a specific danger. Sensors are connected to a control unit via low-voltage wiring or a narrowband RF signal which is used to interact with a response device. The most common security sensors are used to indicate the opening of a door or window or detect motion via passive infrared (PIR). New construction systems are predominately hardwired for economy. Retrofit installations often use wireless systems for a faster, more economical installation. Some systems serve a single purpose of burglar or fire protection. Combination systems provide both fire and intrusion protection. Systems range from small, self-contained noisemakers, to complicated, multi-zoned systems with color-coded computer monitor outputs. Many of these concepts also apply to portable alarms for protecting cars, trucks or other vehicles and their contents (i.e., "car alarms").Burglar alarms (or perimeter security systems, perimeter detection systems, Perimeter protection, intrusion detection systems and many more terms for the same thing) are divided to two main fields: home burglar alarms and industrial burglar and perimeter intrusion detection.

History of burglar alarms
When one mentions burglar alarms it's not unreasonable to think of high tech devices developed in the silicon age. The truth is, the concept of an alarm system is one that was invented long before that. For thousands of years man has used animals, more notably the dog, to guard and alert him of anyone trying to tamper or steel his valuables. In the middle Ages large gongs were used to warn a population of impending doom or large bonfires lit to warn of imminent invasion. As important as these developments were, it was not until 1852 that the first electro-mechanical alarm system was invented. Edwin Holmes was an American Inventor from Boston Massachusetts; the alarm he devised was simplistic but effective. A solenoid struck a gong when a trip wire was disturbed. Although his alarm system is nothing compared to today's offerings it was positively received in its day. These early alarm systems continued to make use of simple electrical circuits and relays. A typical installation would see wire wound along windowsills and around doorframes coupled with conductive lead foil and mechanical or magnetic switches laced with thin wire. The security conscious had to wait until the next century for further alarm system advances, which heralded the advent of the transistor and the integrated circuit. This technology allowed smaller units integrated with microwave and ultrasonic motion sensors along with features such as entrance and exit delays to be introduced. With the level of technical sophistication increasing, so did the applications. Now it was possible to use alarms to monitor industrial processes such as steel production or to monitor natural events such as volcanoes and earthquakes. Today, alarm systems have advanced even further. The rapid and expanded use of the Internet has revolutionized alarm systems immensely, as alarm systems have now become intelligent. It is now possible for them to sort problems out themselves, by identifying triggers and minimizing false alarms. They even have the ability to measure weight, size and other environmental factors. Some also have self-diagnostic capabilities and can detect internal circuitry problems, allowing them to functioning correctly



                                              BLOCK DIAGRAM

This system uses Microcontroller (AT89C2051), PIR sensor and the security lights can be control by relays. The PIR sensor will send a signal to the microcontroller if there is any occupant in the room. If anybody is present in the room then the microcontrollers compares the sensed motion in the room and give signal to the microcontroller. If the intensity value is less than the value stored in the microcontroller then the light will switched on by connecting the relay and the entire block is powered up by the power source. This is the relationship between every unit on the block diagram above.


Basic components of the block diagram

Automatic lighting Systems with motion detector for security application for years now have been made up of the following five major units:
a.     The Power Supply Unit: This Unit provides the Temperature Control System with the Electrical Energy that drives it. In this case, the Power   Supply Unit consists of a Step-down transformer which works based on the principle of induction. The transformer steps down the voltage received from the power outlet from the national rating of 230V to 15V, which is all the voltage needed to drive the system. This voltage is further rectified (using a bridge rectifier) and filtered (using a power capacitor) to give a perfect and undistorted voltage to the system. Of this 15V input voltage, about 5V drives the microcontroller. The rest are needed to drive the other units of the circuit.
b.     The Sensor Unit: This Module consists of devices Passive Inferred Receiver (PIR) that detect the movement of something in front of the sensor. These devices sense the current room status, and provide its result to be used as input in the Control unit and in the Relay Unit.
c.      The Control Unit: The Control unit houses the Controller and related devices (thermostats in automatic systems) that process information to produce effects/action by the system. In this case, this unit houses the microcontroller (and control program/algorithm) that stores the set-point status. The control program receives PIR status from the sensor unit and ensures that it doesn’t compromise the set-point by initiating the appropriate sequence of action(s).
d.     The Relay Unit: This unit consists of output line that is used to give commands to the security lighting unit and also to program the set-point for the system.
e.      The alarm Unit: This unit consists of alarming system that alerts the inhabitants of the environment of an intruder in that area. It comes mostly with those systems that are built to specifications (custom systems).

Chapter 4
Components Description
Relay
 A relay is usually an electromechanical device that actuated by an electrical current. The current flowing in one circuit causes the opening or closing of another circuit. Relays are like remote control switches, and are use in many applications because of their relative simplicity, example circuit using a relay to power a 120v load long life, and proven high reliability. Relays used in a wide variety of applications throughout industry, such as in telephone exchanges, digital computers and automation systems.

PIR sensor
A PIR detector is a motion detector that senses the heat emitted by a living body. This sensor used as a security control lights so that they will switch on automatically if approached. They are very effective in enhancing home security systems. The sensor is passive because, instead of emitting a beam of light or microwave energy that must be interrupt by a passing person in order to sense that person, the PIR is simply sensitive to the infrared energy emitted by every living thing.

LED
A light-emitting diode (LED) is a semiconductor light source. LEDs are used as indicator lamps in many devices, and are increasingly used for lighting. Introduced
in 1962, modern LEDs are available across the visible, ultraviolet and infrared wavelengths, with very high brightness. When a light-emitting diode is forward biased (switched on), electrons are able to recombine with holes within the device, releasing energy in the form of photons. This effect is called electroluminescence and the colour of the light (corresponding to the energy of the photon) is determined by the energy gap of the semiconductor. An LED is often small in area (less than 1 mm2), and integrated optical components may be used to shape its radiation pattern. LEDs present many advantages over incandescent light sources including lower energy consumption, longer lifetime, improved robustness, smaller size, faster switching, and greater durability and reliability. LEDs powerful enough for room lighting are relatively expensive and require more precise current and heat management than compact fluorescent lamp sources of comparable output.
Regulator
The 7805 voltage regulators employ built-in current limiting, thermal shutdown, and safe-operating area protection which make them virtually immune to damage from output overloads. 7805 is a three-terminal positive voltage regulator.
7805 regulator comes from the 78xx family of self-contained fixed linear voltage regulator integrated circuits. The 78xx family is a very popular choice for many electronic circuits which require a regulated power supply, due to their ease of use and relative cheapness. When specifying individual ICs within this family, the xx is replaced with a two-digit number, which indicates the output voltage the particular device is designed to provide (for example, the 7805 voltage regulator has a 5 volt output, while the 7812 produces 12 volts). The 78xx line are positive voltage regulators, meaning that they are designed to produce a voltage that is positive relative to a common ground.

Crystal Oscillator
A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a precise frequency. This frequency is often used to keep track of time, as in quartz wristwatches, to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters and receivers. The most common type of piezoelectric resonator used is the quartz crystal, so oscillator circuits incorporating them became known as crystal oscillators,[1] but other piezoelectric materials including polycrystalline ceramics are used in similar circuits. A crystal oscillator, particularly one made of quartz crystal, works by being distorted by an electric field when voltage is applied to an electrode near or on the crystal. This property is known as electrostriction or inverse piezoelectricity. When the field is removed, the quartz - which oscillates in a precise frequency - generates an electric field as it returns to its previous shape, and this can generate a voltage. The result is that a quartz crystal behaves like an RLC circuit. Quartz crystals are manufactured for frequencies from a few tens of kilohertz to hundreds of megahertz. More than two billion crystals are manufactured annually Most are used for consumer devices such as wristwatches, clocks, radios, computers, and cell phones. Quartz crystals are also found inside test and measurement equipment, such as counters, signal generators, and oscilloscopes.

Microcontroller
Microcontroller AT89S52
The AT89S52 (6 AND 12 clock per machine cycle) is a low-power, high-performance CMOS 8-bit microcontroller with 4K bytes of in-system programmable Flash memory. The device is manufactured using Philips’s high-density nonvolatile memory technology. The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory pro- grammar. By combining a versatile 8-bit CPU with in-system programmable Flash on a monolithic chip, the Philips AT89S52 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications.
The AT89S52  provides the following standard features:  4K bytes of Flash, 128 bytes of RAM, 32 I/O lines, Watchdog timer, two data pointers, two 16-bit timer/counters, a six-vector two-level interrupt architecture, a full duplex serial port, on-chip oscillator, and clock circuitry. In addition, the AT89S52 is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port, and interrupt system to continue functioning. The Power-down mode saves the RAM con- tents but freezes the oscillator, disabling all other chip functions until the next interrupt or hardware reset.
FEATURES
                     4 KB Reprogrammable flash.
                     32 Programmable I/O lines.
                     16 bit Timer/Counter 2.
                     8 Interrupt sources.
                     Power range: 4V – 5.5V
                     Endurance : 1000 Writes / Erase cycles
                     Fully static operation: 0 Hz to 33 MHz
                     Three level program memory lock
                     Full duplex UART serial channel
                     Low power idle and power down modes
                     Interrupt recovery from power down modes
                     128 B internal RAM.

Transformers

A transformer uses the principles of electromagnetism to change one A.C. voltage level to another. Faraday's work in the 19th century showed that a changing current in a conductor (e.g. a transformer primary winding) sets up a changing magnetic field around the conductor. If another conductor (secondary winding) is placed within this changing magnetic field a voltage will be induced into that winding.

Transistor

The bipolar junction transistor, BJT is a key component in today's electronics industry being used in circuits of all configurations from low frequencies to microwaves. The bipolar junction transistor, BJT, is the cornerstone of much of today's semiconductor electronics industry. This form of transistor has been in existence for many years and is still very widely used in electronic circuits. The bipolar transistor is very versatile and finds applications in many applications and at a wide range of frequencies.

Diodes
Diode is a non-linear semiconductor device that allows flow of current in one direction. A Diode is a two – terminal device and the two terminals are Anode and Cathode respectively. The following is the symbol of a Diode.
There are again a variety of components that come under the category of Diodes. They are PN Junction Diode, Light Emitting Diode (LED), Zener Diode, Schottky Diode, Photodiode and DIAC. Normal PN Diodes are often used in AC to DC Converter circuits. You might be familiar with LED or a Light Emitting Diode. It is a semiconductor device (or a PN Junction diode, to be more specific) that emits light when activated. A Zener Diode allows flow of current in both directions and is often used as a voltage stabilizer. Schottky Diode is similar to a regular PN Diode but with less forward current and hence is often used in fast switching circuits.

Resistors
The basic of all electronic components are the Resistors. It is a passive electronic component that introduces electrical resistance in to the circuit. Using resistors, we can reduce the current, divide voltages, setup biasing of transistors (or other active elements), etc.

Resistors are again divided in to Fixed Resistors and Variable Resistors. Fixed Resistors, as the name suggests, have a fixed resistance and its resistance doesn’t change due to external parameters. 
WHAT IS RESISTOR?
Resistor is basic component that is used in all the electronic circuits. It is a passive element that resists the flow of electrons. Thus it allows only certain amount of current to pass through it. Remaining current is converted into heat.
The working principle of bulb is that electricity is passed through the filament usually tungsten, which is a resistor. The energy is converted to and released as light and heat.

Capacitors
The second important passive component is a capacitor, a device that stores energy in the form of electric field. Most capacitors consist of two conducting plates that are separated by a dielectric material.
If Q is the charge on any one of the conductor plates and V is the voltage between them, then the Capacitance C of the Capacitor is C = Q/V.
             
In electronics circuits, a capacitor is mainly used to block DC Current and allow AC Current. The other applications of capacitors are filters, timing circuits, power supplies and energy storing elements. There are many types of Capacitors like Polarized, Non – Polarized, Ceramic, Film, Electrolytic, Super Capacitors etc.
What is Capacitor?
Capacitor is also known as condenser. This is one of the passive components like resistor. Capacitor is generally used to store the charge. In capacitor the charge is stored in the form of “electrical field”. Capacitors play a major role in many electrical and electronic circuits.
Generally, a capacitor has two parallel metal plates which are not connected to each other. The two plates in the capacitor are separated by non conducting medium (insulating medium) this medium is commonly known as Dielectric.
There are different types and different shapes of capacitors available, from very small capacitors which are used in resonance circuits to large capacitors for stabilizing HVDC lines. But all capacitors are doing the same work that is storing the electrical charge.
The shape of a capacitor is rectangular, square, circular, cylindrical or spherical shape. Unlike a resistor, an ideal capacitor does not dissipate energy. As the different types of capacitors are available different symbols were available to represent them which are shown below.

Chapter 5
Engineering Bill of Materials for the Intrusion system
S/N
Description
Qty
Price per rate N
Total price N
1.       
1N4007
1
30
30
2.       
Resistors
2
20
40
3.       
Crystal Oscillator
1
100
100
4.       
Transformer (Half-Wave)
1
1200
1200
5.       
Led
1
30
30
6.       
Jumper Wire
2yrds
100
100
7.       
Vero-board
1
150
150
8.       
Plastic Casing
1
800
800
9.       
Gum
1ptn
400
400
10.   
Soldering Led
3yrds
100
100
11.   
Soldering Iron
1
850
850
12.   
Lm7805
1
150
150
13.   
Transistor
1
60
60
14.   
Relay
1
300
300
15.   
AT89S52
1
500
500
16.   
PIR sensor
1
400
400
17.   
Bulb
1
500
500
18.   
Lamp holder
1
200
200
19.   
Workmanship


14,000



Total
N20,910

Conclusion
The paper has introduced the idea of an Intusion system with motion detector for security application and proposed a method which saves power consumption by system. This Automated Gadget Control System having the interconnections between the home appliances and sensors for controlling and monitoring the device. Automated home is a vast system that having multiple technologies and its applications that can be used to provide control and security of the homes easily.

References
[1] Vibhuti and Shimi S.L., “Implementation of Smart Class Room Using WAGO PLC”, Proceedings of the Second International Conference on Inventive Systems and Control (ICISC) 2018, Coimbatore, pp. 807-812.
[2] A. Maslekar, K. Aparna, K. Mamatha and T.Shivakumara, “Smart Lighting System using Raspberry Pi”, International Journal of Innovative Research in Science and Technology, Vol.4(7), 2015, pp.5113-5121I.
[3] Suresh S, H.N.S.Anusha, T.Rajath, P.Soundarya and S.V,PrathyushaVudatha. “Automatic Lighting And Control System For Classroom” 2016 International Conference on ICT in Business Industry & Government (ICTBIG).
[4] “Automatics Room Light Controller with Visitor Counter”, Available from
[5] Vahid Hassanpour, Sedighe Rajabi, Zeinab Shayan, Zahra Hafezi, Mohammad Mehdi Arefi , “Low-Cost Home Automation Using Arduino and Modbus Protocol”, 5th International Conference on Control, Instrumentation and Automation (ICCIA), Shiraz, 2017, pp. 284-289.
[6] https://components101.com/microcontrollers/arduino-Uno











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