UNIVERSIDAD DE MANILA COLLEGE OF ENGINEERING AND TECHNOLOGY
HOME AUTOMATION: AUTOMATIC SWITCHING ON/OFF USING ANDROID PHONE VIA BLUETOOTH
SUBMITTED IN PARTIAL FULFILLMENT OF REQUIREMENTS FOR THE MICROPROCESSOR SYSTEM
BY: TUNGCAB, RONA ANGELYNE F. PASCUA, RONNABELLE P. CRUZ, JUSTINE ROCEL A. HALILI, CHRISTINE D. MAQUINAD, ARIEL T. ROCA, MA. MELISSA ALIPIO, MARVIN G.
TABLE OF CONTENTS CHAPTER 1: THE PROBLEM AND ITS BACKGROUND A. INTRODUCTION B. STATEMENT OF THE PROBLEM C. OBJECTIVES D. SIGNIFICANCE OF THE STUDY E. SCOPE AND LIMITATION F. DEFINITION OF TERMS
CHAPTER 2: REVIEW OF RELATED LITERATURE AND STUDIES A. LITERATURE B. FOREIGN STUDIES C. LOCAL STUDIES
CHAPTER 3: RESEARCH METHODOLOGY A. METHOD OF RESEARCH USED B. SOURCES OF DATA C. DATA GATHERING PROCEDURES D. CONCEPTUAL FRAMEWORK
CHAPTER 4: PRESENTATION, ANALYSIS AND INTERPRETATION OF DATA A. DESIGN B. TESTING
CHAPTER 5: SUMMARY, CONCLUSION AND RECOMMENDATION A. SUMMARY OF FINDINGS B. CONCLUSION C. RECOMMENDATION
TABLE OF CONTENTS CHAPTER 1: THE PROBLEM AND ITS BACKGROUND A. INTRODUCTION B. STATEMENT OF THE PROBLEM C. OBJECTIVES D. SIGNIFICANCE OF THE STUDY E. SCOPE AND LIMITATION F. DEFINITION OF TERMS
CHAPTER 2: REVIEW OF RELATED LITERATURE AND STUDIES A. LITERATURE B. FOREIGN STUDIES C. LOCAL STUDIES
CHAPTER 3: RESEARCH METHODOLOGY A. METHOD OF RESEARCH USED B. SOURCES OF DATA C. DATA GATHERING PROCEDURES D. CONCEPTUAL FRAMEWORK
CHAPTER 4: PRESENTATION, ANALYSIS AND INTERPRETATION OF DATA A. DESIGN B. TESTING
CHAPTER 5: SUMMARY, CONCLUSION AND RECOMMENDATION A. SUMMARY OF FINDINGS B. CONCLUSION C. RECOMMENDATION
CHAPTER 1 THE PROBLEM AND ITS BACKGROUND
A. INTRODUCTION
Devices are sometimes left plugged into power sockets whereas others are supposed to be plugged into and out of power sockets at different intervals depending on the time of the day. All this requires an individual to manually attend to each of the devices independently from time to time.
Have you ever imagined yourself turning ON/OFF your appliances while you are just sitting on your couch or while you are a re resting on your bed? Do you ever think of switching your appliances with just a touch of your finger? Does it come into your mind of using your Smartphone as your remote control? If that is the case, then, you are imagining of home automation or simply Smart home. Generally, home automation is the control of any or all electrical devices in our home. It is also refers to the use of computer and information technology to control home appliances and features (such as windows or lighting). It may include centralized control of lighting, HVAC (heating, ventilation and air conditioning), appliances, and other systems, to provide improved convenience, comfort, energy efficiency and safety. The popularity of home automation has been increasing greatly in recent years due to much higher affordability and simplicity through Smartphone and tablet connectivity. The concept of the “Internet of things” has tied in closely with the popularization of home automation.
This proposal focuses mainly on automatic switching ON/OFF of appliances. The project is developed using a microcontroller to control the command signal received from Smartphone using Bluetooth and then will trigger the relay to turn on and off the connected home appliances. Android application is the center of this control to send command signals to microcontroller.
A. STATEMENT OF THE PROBLEM
One of the problems that have been cited is the inconvenience of the disabled and elderly people. Inconvenience in terms of attending to the appliances just to plug and/or unplug it using their own hand. Doing those kind of things may sometimes cause more trouble due to their impairment. Fast-paced technology which some elderly people do not know how to use that brings inconvenience to their living. Other problems are fire which is at times due to overheating of devices that lessens the level of safety inside your home and high electric cost through continuo us power consumption of unplugged appliances that limits the allocation of your money. With these issues, they then d ecided to propose a microcontroller-based automatic switch using Bluetooth-enabled devices which will enable one to remotely switch and manage his appliances from a specific range inside or outside his home.
B. OBJECTIVES
The main purpose of this project is to develop home automation specifically automatic switching ON/OFF of appliances which is being remotely controlled by a command signal from Android phone via Bluetooth. In this project, they will be able also to:
i.
Help elderly and handicapped people live a more convenient life.
ii.
Design cost efficient and improve safety system.
iii.
Provide an easy-to-use environment.
C. SIGNIFICANCE OF THE STUDY
Today, automation technology is gaining more recognition among the people not just for home modification but in industrial and business sectors too. Home automation technology is constantly improving its flexibility by incorporating modernized features
to satisfy the increasing demand of the people. We live in a time unlike any other. With so many technological advancements at our fingertips, our lives are ma de easier, which fortunate is considering the fast-paced lives most of us lead. In recent years, great strides have been made in making homes a bit more “tech savvy.”
Equipment and other electric powered gadgets, such as home appliances and lighting are all instantly switch and people do not need to have a hand on it. Modern houses are gradually shifting from conventional switches to centralized control system, involving remote controlled switches. Presently, conventional wall switches located in different parts of the house makes it difficult for the user to go near them to operate. Even more it becomes more difficult for the elderly or physically handicapped people to do so. Wireless switching of appliances provides a most modern solution with smart phones.
There are many factors that are responsible for home automation's growing importance. Some important benefits of home automation are listed b elow: a. Affordable: Home automation process doesn't require a huge sum of money to modify your home. This is one of the important reasons for its growing popularity among the homeowners. You can save a lot of money if you plan to automate your home during its construction process.
b. Easy to use: You can operate and access the automation technology with ease due to its simple procedures that are easy to learn and implement. Centralized control system is used to control the overall operations of different equipment, which ultimately reduces your burden and allows you to operate the devices with a single button click.
c. Enhanced performance: Proper wiring and computer control are the important factors that determine the effective performance of the automation technology. Usually, home automation systems that are installed using professional
installers are reliable and perform all its operation effectively without causing frequent failures.
d. Improves the security features: One of the important uses of home automation technology is that its ability to enhance the security features of the home without demanding a huge home renovation. For example, you can monitor the entire security systems by making use of video surveillance system. Besides, you can use motion detector to detect even the slightest movements around your home without the need for wandering.
e. Safe: Automation systems are installed carefully and are integrated under one centralized control unit, which ultimately secures the people.
f. Energy saving: By controlling temperature and lighting based on the programmed schedules, automation systems reduce the energy bills considerably. Now, you can move to distant places without any worries regarding your energy bills by making use of automation systems.
The key value of the smart home will be in situations that can help to make people’s lives easier. Smart homes have the potential to improve the accessibility of technology, allowing users to control aspects of a room through their devices. Rather than encouraging laziness, if employed properly, this can provide help for both individual users and organizations. Indeed, many of the current deployments of connected technology are in homes for people with accessibility needs. Another setting we can see 'smart home' technology being valuable in is hospitals: patients could control their beds and the temperature in their room all through their Smartphone, a device they are already comfortable with as opposed to an unfamiliar remote control. Systems can range from simple remote control of lighting through to complex computer/microcontroller based networks with varying degrees of intelligence and automation. Home automation is adopted for reasons of ease, security and energy efficiency D. SCOPE AND LIMITATION
Scope
1. Powered by 220V AC. 2. Installation of Blueterm Application in Android phone is necessary. 3. Bluetooth is manually turned on and off. 4. Password is being used to allow authorized users only from accessing the appliances at home automatically. 5. Once paired, password will not be needed. 6. TURN ON: Press 1 to activate device 1, press 2 to activate device 2, press 3 to activate device 3, and press 4 to activate device 4. 7. TURN OFF: Press A/a to deactivate device 1, press B/b to deactivate device 2, press C/c to deactivate device 3, and press D/d to deactivate device 4. 8. The system has four available outlets but the maximum number of output pin in the microcontroller is thirteen.
Limitations
1. Android operating system only. 2. One at a time connection only. 3. Standard range is approximately 10 meters. 4. Absolute maximum ratings of 40mA DC current per I/O pin of the microcontroller. 5. The distance and range of Bluetooth is dependent on the location of appliances from the system.
E. DEFINITION OF TERMS Android
An operating system for smartphone and other device, developed by Android, Inc. and later purchased by Google. The Android platform is based on the Linux operate system, and feature numerous applications apps developed by Google and by third party developer. Phones running the Android operating system are the primary competitor to Apple's IPhone, and are the best-seller smartphones global.
Android phone
The Android cell phone is a cell phone running the Android OS. A typical Android cell phone is a smartphone with a touch screen interface, multiple connectivity options, Internet browsing capabilities, support for video playback and a camera.
Automatic
It means having controls that allow something to work or happen without being directly controlled by a person
Automation
The technique of making an apparatus, a process, or a system operates automatically.
Bluetooth
It is a public standard (802.15.1) intended for short-range, low-power wireless transmissions. It is used for connecting consumer electronics such as a wireless keyboard or mouse to a PC.
Controller
Device that controls other devices using wireless network. There are a variety of controllers available including hand-held remote controls, central gateway controllers that provide access to the Internet and PC software (via USB) that can control your network from anywhere in the world.
Device
A Device is a specific electronic product that can be controlled through the wireless network. The device can be a local wireless controller, which controls a specific light or appliance (usually connected to it by mains wiring), or a sensor that provides input to the network. Each Device is seen as a network Node.
Gizduino (Arduino clone)
An open source computing platform based on a simple input/output (I/O) board and the use of standard programming language; simply, it is a tool for implementing a program you have designed.
Home Automation
All aspects of adding switch to your home and appliances. It can be as simple as adding remote switch to a few lights, or creating a more complex system that includes automatic sensors and security systems.
Infrared
Infrared (IR) is invisible radiant energy, electromagnetic radiation with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 700 nanometers (frequency 430 THz) to 1 mm (300 GHz) (although people can see infrared up to at least 1050 nm in experiments). Most of the thermal radiation emitted by objects near room temperature is infrared.
LED
Stands for Light Emitting Diode. These modern light bulbs use very little power typically 10% of the traditional incandescent bulbs.
Microcontroller
A small computer on a single integrated circuit containing a processor core, memory, and programmable input/output peripherals.
Module
A device that adds wireless switch to lights or appliances. For instance a dimmer module enables you to switch a lamp wirelessly.
Network
Two
or
more devices connected
together
is
called
a
Network.
This
enables devices to be switched and to communicate with each other. For home automation we typically refer to a Wireless Network as a Network.
Pin Mode
It configures the specified pin to behave either as an input or an output.
Relay
A wireless controlled device that switches the On/Off state of a local appliance (load). The relay switches the power going to the load via standard mains cables. The term relay is normally associated with Inserts and Modules that switch appliances of more than 600W (not lights).
Smartphone
A smartphone or smart phone is a mobile phone with an advanced mobile operating system which combines features of a personal computer operating system with other
features useful for mobile or handheld use
“Tech savvy”
Tech savvy means knows more about modern technology, especially computer.
Wireless Network
A Network on which the devices communicate wirelessly using radio waves (RF). Wi-Fi, Lightwave RF, Z-Wave and ZigBee are all wireless network technologies. ZigBee ZigBee is an IEEE 802.15.4-based specification for a suite of high-level
communication protocols used to create personal area networks with small, low-power digital radios. CHAPTER 2 REVIEW OF RELATED LITERATURE AND LIMITATIONS
This chapter will explain about the review of the works and studies from other researchers that were related to the development of this project, which is “Home Automation: Automatic Switching ON/OFF using Android phone via Bluetooth”. The literature review is a continuous part that should be done until this project is successfully developed.
A. LITERATURE
A smart home is a "home equipped with lighting, heating, and electronic devices that can be controlled remotely by a Smartphone or computer". Home automation used to be something of a science fiction concept, as we can see from Microsoft’s amusing 90s vision of the smart home. But now that technology has advanced, home automation is actually happening. We can now control our TVs and set-top boxes from our phones or tablets, control our lights using Bluetooth-enabled devices. Apps are at the center of helping to control our homes, allowing us and our homes to be smarter and better connected.
When people think about home automation, most of them may imagine living in a smart home: One remote controller for every household appliance, cooking the rice automatically, starting air conditioner automatically, heating water for bath automatically and shading the window automatically when night coming. To some extent home automation equals to smart home. They both bring out smart living condition and make our life more convenient and fast. People at that time understood that a smart home is not owing to how well it is built, not how effectively it uses space, not due to how it is environmentally friendly. It is only because of how interactive technologies that it contains. Those are still useful rules for home automation technology today. Below are some related studies about the home automation using different processes to make a better smart home.
B. FOREIGN STUDIES
The content of this section is from research paper work written by Abdurrahman Bin Suratman. Bachelor of Electrical Engineering. (June 201 4).“ Android Smart Switch for Smart Home”. Universiti Teknologi Malaysia.
B.1. Related Study
Generally, Smart Switch system for Smart Home is developed consists of two major parts that are smart switch device and access point. This device is connected to electrical appliances that can be controlled using sensor and remotely controlled through access point.
B.1.1. Wireless Switch in Smart Home Application
This research paper work is written by Mohd Ridzuan Bin Johary, Bachelor of Electrical Engineering (Microelectronics), Universiti Teknologi Malaysia, June 2012. In this research, the project used PIC18F4620 microcontroller as a main controller device of a remote control system and PIC16F628A microcontroller for a smart switch device as shown in Figure 2.1 and Figure 2.2. The communication system between two devices is the radio frequency (RF) with operating frequency 315 MHz. The performance of the system is depends on the distance between smart switch and remote control device. The weakness of this project is the switch can only be switched “ON” and “OFF” by using only single controller and cannot been turn “ON” and “OFF” manually without the controller. The smart switch that has been developed by researcher is shown in Figure 2.1 and Figure 2.2.
Figure 2.1: Smart switch device
Figure 2.2: The main controller of remote control
B.1.2. Smart Switch Energy Saving For Lighting System
This research paper work is written by Nor Khairunnisa Binti Sidek, Bachelor of Engineering (Electrical), Universiti Teknologi Malaysia, July 2012. The type of sensors use for smart switch was studied in this work. In this
research, the project used PIC 18F8452 microcontroller and GP2Y0A21YK infrared sensor to develop a smart switch as shown in Figure 2.3 and Figure 2.4. The performance of this smart switch depends on the range of the infrared sensor. Figure 2.5 shows the performance of the infrared sensor on smart switch against the people’s height because the infrared sensor was located above a door to trigger the motion of people come through that door. Figure 2.4 shows the infrared sensor used, is quite expensive to implement and it did not use a communication system to control the smart switch wirelessly.
Figure 2.3: PIC 18F8452 microcontroller
Figure 2.4: GP2Y0A21YK infrared sensor
Figure 2.5: The graph sensor against the people’s height
B.1.3. Home Automation Using GSM
This research paper work is written by Carelin Felix and I. Jacob Raglend Member, IEEE (2011). In this research paper the communication system between all appliances in the house into a single communication device has been studied. This project used PIC microcontroller for both appliances and communication device as shown in Figure 2.6 and Figure 2.7. The ZigBee has been used to transfer the information between appliances and communication device. The ZigBee uses IEEE 802.15.4 of radio frequency (RF) communication standard (refer to figure 2.7) [13]. The communication device use GSM to receive command from mobile phone (refer to figure 2.6). This smart switch can be control using smart phone, however it is cannot monitor the appliances in the house.
Figure 2.6: Communication device using GSM
Figure 2.7: Appliance device using ZigBee
B.2. Smart Switches Available In Market
Nowadays, smart switch technology is expanding rapidly. There are many type of smart switches that are already available in current market. This technology is widely implemented in universities and homes.
B.2.1. Smart Switch Using Motion Sensor
Figure 2.8: Smart infrared sensor switch
Motion sensor released infrared rays that can detect motion of the human body within the detection area to turn “ON” the switch. The detection of motion will transform into an electrical signal by interrupt the current of the infrared circuit to trigger the switch. This smart switch only turns “ON” if it detects motion in a room and will turn off within the given time. It may be difficult for a user to turn “OFF” the switch into sleep mode.
B.2.2 Smart switch using Wi-Fi and Cellular Connection Smartphone Home Remote
Figure 2.9: Belkin F7C030fc WeMo Light Switch
This product manually turn “ON” and “OFF” by touching the button on the switch. It is compatible with Android devices to control the switch using ho me Wi-Fi network. Belkin provides free WeMo App for Android.
This chapter discussed on smart switch system, sensor and wireless communication. It discussed about previous project that was made to build smart switch system. The explanations are more about the microcontroller, sensor and wireless communication that was used. Brief explanations about the t ype of smart switch available in market.
C. LOCAL STUDIES
Based on the article from Dayrit property Sales and Leasing Corporation. (2013). “Home Automation | Future of Condo Living in the Philippines”. Retrieved from http://www.dayritproperties.com/2013/10/home-automation-future-of-condo-livingin-the-philippines/. For countless years, home automation is the exclusive domain of the rich or extremely techie people.
In the Philippines, we hardly ever heard about home automation as we Filipinos still rely on the manual and the traditional. The cost of setting it up is priced almost like buying a new house.
Just by reading tech news in Google, major phone carriers have gotten into the act, and rumors suggest Google, Apple, Microsoft and other consumer electronics companies are working on home automation. It is likely that home automation is in the process of making a transition to commoditize the technology starting of course with first world countries like the US.
A known real estate developer who has a project in Mandaluyong kick starts the trend in home automation by the first future ready home. They offer unit owners the opportunity to enjoy the seamless and connected lifestyle within the confines of their own automated home.
Through home automation, residents are allowed to control their home appliances, lights, curtains, and even the thermostat can be switched on or off with the press of a button on their Smartphone or tablet.
Wireless home automation has been attempted for decades with minimal or no success. If a company can offer a solution that simply works and secure and of course cost effective, home automation will be a trend.
CHAPTER 3 RESEARCH AND METHODOLOGY
A.
METHOD OF RESEARCH USED
In this chapter the results of the data analysis are presented. The data were collected and then processed in response to the problems posed in Chapter 1 of this study. The fundamental goals drove the collection of the data and the subsequent data analysis.
Residents if they are using Android phones and 65% of which said that they are using such phone. Another question is asked and 50% of the total respondents said that they are familiar on Home Automation and will consider adding Home Automation in their household. In relation to this, the researcher could presume that in the said percentage, a considerable number could possibly use the project. Appendix A is a copy of the survey questionnaire provided by the researcher.
20% 0% 25%
Comfort/convenience 55%
Security Energy Cool features
Figure 3.1: Factors in adding home automation system
The last question was about the importance of electrical functions. Respondents were asked to rank home appliances according to its degree of importance being 1 as the most important and 4 as the least important. Figure 3.2 shows the result of the
survey having automatic control of light as the most important based on the gathered data.
8%
Automatic Control of light
19% 18%
55% Turn off/on Television
Figure 3.2: Ranking of home appliances according to its degree of importance.
B. SOURCES OF DATA
Abdurrahman Bin Suratman. (2014). Android Smart Switch for Smart Home. Universiti Teknologi
Malaysia.
Retrieved
from
http://portal.fke.utm.m/abdurrahmanbinsuratman/2014 Lifehacker. (2015). A Guide to the Smart Home in 2015: What are the Trends and What Do You Need to Know? Retrieved from http://www.lifehacker.co.uk/2015/01/20/guide-smart-home-2015-trends-needknow
C. DATA GATHERING PROCEDURES
CHAPTER 4 PRESENTATION, ANALYSIS AND INTERPRETATION OF DATA
A. DESIGN
A centralized controller can be used to control appl iances in your home. The design uses ATMEGA328 microcontroller board as the controlling unit of the system, Android phone as input device and the home appliances as output device. The connection between the input and the control unit is wireless using Bluetooth. Figure 4.1 shows the block diagram of the system.
Power 220V Input Cellphone command signal
Process
Output
Microcontroller Bluetooth
Appliances On/Off Relay
Fig. 4.1: Block Diagram of Home Automation Power-Controlled Switch
A Bluetooth shield is interfaced to the microcontroller board at the receiver end while on the transmitter end, an Android application is necessary to send ON/OFF commands to the receiver where loads are connected, if the app is not installed the system does not make sense. By touching the specified input on the application, the loads can be turned ON/OFF remotely through this wireless technology.
A.1. Algorithm
This section will explain the step-by-step process of how the system was developed.
A.1.1 Parts and Components
In order to start the design of the project, you will be needing the parts and components listed below.
Fig. 4.1: ATMEGA328 Gizduino microcontroller board.
Fig. 4.2: Bluetooth Shield
Fig. 4.3: Relay card
Fig. 4.4: 12V DC Power Adapter
Fig. 4.5: Extension cord
Fig. 4.6: Some wires and jumper wires
Fig. 4.7: Android phone with Blueterm application
A.1.2. Microcontroller Program
Before proceeding with the hardware connections of the project. You need to compile and upload a program in your microcontroller for you to control the system. The program must be appropriate with the process that you want to achieve. In this section, the code that the researcher used will be provided below for development and/or modification.
A.1.3. Schematic Diagram
The connection of the parts and components will be showed in this section. Make sure to follow the connection especially the proper wiring of supply and ground from the source. It may damage one of your component or worst is your whole system. Figure 4.8 shows the schematic diagram of this project with a single load only.
Fig. 4.8: Schematic Diagram connecting a single appliance.
In the figure above, they used Arduino as their microcontroller board, you can also choose your desired microcontroller board as long as it uses an ATMEGA328 microcontroller chip. Another reminder is to put first the Bluetooth shield above your microcontroller before you proceed with the wiring. Thus, making your connections in microcontroller through Bluetooth Shield. Connect the 12V-DC power adapter in the microcontroller to power up your system.
B. TESTING
After setting up the components needed in this project, this is the result of the testing that has been conducted. Table 1 shows the testing of power switching using relay.
TRIAL 1
2
3 4
Scenario
Expected
Actual
Relay 1 is Off,
Relay 1 should
Relay 2 turned
Action: Turn ON
turn On
On
Relay 2 is On,
Nothing should
Nothing
Action: Turn On
happen
happened
Relay 3 is On,
Relay 3 should
Relay 3 turned
Action: Turn Off
turn Off
Off
Relay 4 is Off,
Remarks
Nothing should
Nothing
happen
happened
Action: Turn Off
Table 1: Testing of P ower switching ON/OF F using relay Legend:
--The actual result is the same as the expected result.
It shows that during the first testing of the power switching ON/OFF using relay. The actual result of four trials is the same with the ex pected result prior to the executed action.
After testing the power switching using relay, the loads are then connected. Table 2 shows the outcomes of the testing done.
TRIAL
Scenario
Expected
Actual
1
Device 1 is Off, Action: Press the command
Device 1
Nothing
signal for device 1 to turn
should turn On
Happened.
Action: Press the command
Device 2
Device 2
signal for device 1 to turn
should turn Off
is still On
Action: Press the command Nothing should
Device 1
it ON. 2
Device 2 is On,
it OFF. 3
Device 1 is Off,
signal for device 1 to turn
happen.
turns On
it OFF. 4
Device 2 is On, Action: Press the command Nothing should signal for device 2 to turn
happen
it ON.
Table 2: Testing of Power switching with loads connected.
Device 2 turns Off
Remarks
Legend: --The actual result is not the same as the expected result.
In second testing of the power switching ON/OFF, loads are then connected to the relay. The actual result of four trials is the inverse with the expected result prior to the executed action. C. CONCEPTUAL FRAMEWORK C.1. Flowchart
Start
Is Bluetooth
No
Turn ON Bluetooth.
Yes Launch BlueTerm application
Is Device 1,
No
Yes
Do you want
No
Yes
Press A or a to turn OFF “Device 1”. Press B or b to turn OFF “Device 2”. Press C or c to turn OFF “Device 3”. Press D or d to turn OFF “Device 4”.
End
Press 1 to turn ON “Device 1”. Press 2 to turn ON “Device 2”. Press 3 to turn ON “Device 3”. Press 4 to turn ON “Device 4”.
Photo is from Tricon Homes Inc.
gizDuino Version 4.1
It is an open source computing platform based on a simple input/output (I/O)board and the use of standard programming language; in otherwords, it is a tool for implementing a program you have designed. Gizduino is programmed using the IDE (Integrated Development Environment). With Serial RX-TX disable switch. Atmega168P and 328P ICs are low power but its also the same functions of ATmega168/328 IC. Power Input: External:8V-12V USB:5V Microcontroller : ATmega 168/168P or ATmega 328/328P Debubger Port: ICSP
I/O port: 20 I/Os (14 Digital I/O & 6 Analog In DC Power Outouyt: 3.3V On-board Crystal: 16MHz and 12MHz PCB Dimensions: 2.7 x 2.1 inch
Bluetooth Shield (Slave || Master)
Employing our latest EGBT-04 series low cost bluetooth module, the Bluetooth shield is likewise available in two low cost versions: Slave only functions and Master and Slave functions. Class 2 Bluetooth shield with SPP profile functioning as UART port wireless cable replacement. Power Input: External: 8-12V Microcontroller Default : 5V Interface : Module Interface for future use
Ex2 12V Relay Card
e-Gizmo Ex2 12V Relay Card an Automotive Relay Ex2 Series that Life's long in 1 x10 ^6 Mechanical Operations. An Automotive Relay Ex2 Series • Life's long in 1 x10 ^6 Mechanical Operations
Power Input: 12 V (Nominal Voltage) Max. carrying current: Approx. 20 Amperes On board Relay: Automotive type of Relay EX2 series
PCB Dimension: 60 mm x 48mm
CHAPTER 5 SUMMARY, CONCLUSION AND RECOMMENDATION
A. SUMMARY OF FINDINGS
This project entitled, “Home Automation: Automatic Switching ON/OFF using Android phone via Bluetooth”,aims to give a more convenient, cost efficient and safety life to the user. It is all automated. This project takes away a wide range of initiatives from people. Equipment and other electric powered gadgets, such as home appliances and lighting are all instantly control and people do not need to have a hand in it.
An Android smart phone connected with Bluetooth sends control signals to microcontroller board. On receiving signal microcontroller process, it performs task to control power of appliances. System provides a user-friendly environment to control all connected home appliances. The popularity of the wireless network in home automation is increased in recent years and the advance technology has made this possible.
In this paper, a home automation system based on a Bluetooth wireless technology is pre posed. The proposed Bluetooth home network is designed for monitoring and remote control of different appliances connected over Bluetooth network in a home environment. The developed Bluetooth home network system includes emulation programs of each device and a home server program. The Bluetooth network system has been simulated to be functioning by developing sensor modules and device control systems.
The system is secured for access from any user or intruder. The users are expected to acquire pairing password for the connection to access the switching of home appliances. This system can be used as a test bed for any appliances that requires on-off
switching
functionality of the
applications without
any
internet connection. The full
home automation system was tested
and
the
wireless
communication between the cell phone and microcontroller was found to be limited to <50m in a concreted building and maximum of 100m range was reported to be applicable in an open range.
The home automation system has been experimentally proven to work satisfactorily by connecting sample appliances to it and the appliances were successfully controlled from a wireless mobile device. The Bluetooth client was successfully tested on a multitude of different mobile phones from different manufacturers, thus proving its portability and wide compatibility. This project will not only provide convenience to the common man but will be a boon for the elderly and disabled.
B. CONCLUSION
Nowadays, Smart home usually implement the normal remote and control of devices in your home. Therefore, we propose to design a Bluetooth based home automation system which will enable one to remotely manage his/her appliances from anywhere, anytime. Rather than encouraging laziness, if employed properly, this can provide help for both individual users and organizations. For instance; smart home technology could be especially useful for people with disabilities, allowing them to switch their home appliances from a single device. Indeed, many of the current deployments of connected technology are in homes for people with accessibility needs. Some devices if not controlled properly consume a lot of energy which leads to extra expenditure on electricity. Thus, this project will help the user to save energy, improve safety and effective usage of electrical equipment and appliances.
As we've mentioned, providing peace of mind is one aspect that may appeal to homeowners. In addition, home automation is growing rapidly nowadays and enters in this emerging market quickly. It can undoubtedly make life at home much easier. For the millions of people affected by disabilities and also the elderly population, it can make a life-changing difference. Some devices if not controlled properly consume a lot of energy which leads to extra expenditure on electricity.
This link can help users save both money and energy. In recent years, there has been a rise in energy monitors and energy saving plugs. Mobile devices have the potential to connect to these devices, giving the user one place where they can review and alter their home’s energy use in order to better control their budget. It is evident from this project work that a Home Automation: Power Switching On/Off Using Android Phone via Bluetooth can be cheaply made from low cost locally available components and can be used to remotely control home appliances ranging from electric fan, television and even from lightning system. And better still, the components required are so small and few that they can be packaged into a small
inconspicuous container. The designed home automation system was tested a number of times and certified to control different home appliances as long as the maximum power
and
current
rating
does
not
exceed
that
of
the
used
relay.
Finally, this home automation system can be also implemented over Bluetooth and Ethernet without much change to the design and yet still be able to remotely control a variety of home appliance. Hence, the system is scalable and flexible.
C. RECOMMENDATION
It can be concluded that the objectives of this project were achieved, which are high level of accessibility and convenience to elderly and handicapped person. In addition, a
user-friendly
Android application as an alternative to remote control unit of a
home automation system has also been established. Improvements can be made to improve this project, some recommendations are:
1. Security system that might be compatible for the Bluetooth system. 2. Add circuit breaker for security purposes. 3. Compatibility for the Apple users or iOS device and Windows. 4. Increase the range of Bluetooth connectivity
APPENDIX APPENDIX A: SURVEY FORM Name:
Status:
Age:
Gender:
_____________________________________________________________________
We are engineering students from Universidad De Manila who provides in-depth analysis and quantitative forecasting of trends in global connectivity and other emerging technologies. _____________________________________________________________________ 1. Do you live in an o
apartment
o
single-family house
o
extended-family house
2. Do you have Android Phones in your home today? o
o
Yes No
3. Have you ever heard of "Smart Home" or “Home automation” services? o
o
Yes No
If yes, have you ever considered adding it functionality to your household?
o
Yes
o
It depends
o
No
If No, Why aren’t you interested in automating your home? o
It is not necessary
o
It is a waste of money
o
I don’t know enough about it
4. Which factor would lead you into adding such a system? o
For its convenience, to save time
o
For security reason
o
Energy Savings
o
Comfort
o
Cool Features
5. Which of these functions would be the most important for you? Please rank your answers from 1 to 3. 1 is the most important and 3 is the least important.
Automatic control of light Turn on/off television Turn on/off electric fan Unplug charger from socket
Thank you for cooperating! God Bless.
