Key Features:
Pages: 44
Chapters: Six
Format: Ms word
Delivery Rate: Fast
Abstract:
LED display board is a primary thing in any institution/organization or public utility places like bus stations, railway stations and parks. But sticking various notices day-to-day is a difficult process. The LED display board is a common display for effective mode of providing information to the people, but this is not easy for updating the messages instantly. This project deals about an advanced Hi-Tech wireless Notice Board. This system is enhanced to display the latest information through an Android application of smart phones.
Table of Content:
Title page
Certification i
Dedication ii
Acknowledgement iii
Abstract iv
List of figures v
Table of contents vi
CHAPTER ONE
1.0 Introduction 1
1.1 Background of the Study 1
1.2 Statement of the Problem 3
1.3 Research Objectives 3
1.4 Contribution to Knowledge 4
1.5 Limitation of the Project 4
1.6 Methodology 4
1.7 Definition of Terms 5
CHAPTER TWO
2.0 Literature Review 6
2.1 A Brief Outline of the Chapter 6
2.2 Historical Background of the Project 7
2.3 Theories and Concepts related to the research 9
CHAPTER THREE
3.0 Research Methodology 10
3.1 A Brief Outline of this Chapter 10
3.2 Research Design 11
3.3 A Brief Explanation of Each Block 17
CHAPTER FOUR
4.0 Principle of operation of the project 18
4.1 Brief introduction of the chapter 18
4.2 Principle of operation 19
4.3 Explanation of various unit 29
CHAPTER FIVE
5.0 Construction of the designed project 30
5.1 A brief outline of the project 30
5.2 Choice of material 30
5.3 Construction of the project 31
5.4 BEME table 32
5.5 Test(s) result of test 33
CHAPTER SIX
6.0 Conclusion, summary and recommendation 34
6.1 Summary of the project chapter by chapter 34
6.2 Problems encountered 35
6.3 Recommendation 35
6.4 Conclusion 35
REFERENCES 36
Introduction:
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE STUDY
An information display is a way of providing information and it is used as an object for promotion. It can be seen in a form of cardboard or tarpaulin at stores/shops, streamers and electronic display devices. But the advent of new technologies made the information in the form of an electronic display in the world of advertisements and promotions. The ability to display a short message can be useful application to be available for any business. A LED display board is perfect for this application. It can be used for both indoor and outdoor which makes it universal fit for any business or event. The LED display board is very efficient and cost effective way to spread messages to thousands of people, without any personal contact or door-to-door sales. LED is a solid state light source with several attractive properties for display application. It is chosen as the main component for displaying messages because, today LED is the most energy efficiency example as compared to incandescent light bulb.
A LED light emit very little heat and saves a lot of energy, as 98 percent of the energy used by a traditional incandescent light can be lost as heat energy instead of light energy. A based LED display board is a device for displaying messages by sending the message in the form of SMS through mobile phone. The high frequency, 900 MHz and international roaming of the GSM makes the mobile phone users to recognize the technology worldwide. Because of the digitalized signals and speech clarity, the GSM technology is considered as third generation (3G) mobile communication system. A motion detector is a device that detects moving objects, particularly people. A motion detector is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area. Motion detectors form a vital component of security, automated lighting control, home control, energy efficiency and other useful systems. This project proposes a LED display board with dual power supply such as solar and AC power and changing the displaying message either by laptop or SMS through mobile phones. It also incorporates a motion detector which acts as a switch in the display board.
Electronic digital display system as used in this reports refers to a sign that uses electronic hardware and software to display its copy, messages or images. Also, a sign utilizing a fixed light source to provide a message in text, images pictures, and or symbols that may appear to move or may appear as on/off messages. This is contrast to traditional non-electronic signs where the copy displayed is physically applied to the sign surface by printing, painting or otherwise attaching it onto the sign. The materials or substrate to which the copy is applied is typically paper, wood, plastic or the wall of a building.
In this modern time, solid materials have helped man to show that he really exists by doing wonders in the world of electronics. One major development, made possible by the enormous advances in solid state technology, is the “digital revolution”. Circuits are designed to implement the basic digital logic functions fundamental to all digital systems. Digital electronics therefore comprises the design, manufacture and use of circuits for processing information in digital form (Simpson, 2001).
Electronic digital display system is also used for outdoor advertisement. Before, outdoor advertising was mainly characterized by the use of paper. Every bus stop and billboard had a paper advertisement inside. The reason for this was simple paper was easy to use and extremely cheap. It had some draw backs as well. Before an image is actually on the street, it first has to be printed, pasted and placed. The journey from design to placement is quite long. Another disadvantage is the considerable amount waste generated by the use of paper. Finally, many people ignore a paper advertisement and there attention is drawn to the vibrant environment around them and not to a still image.
The extent of development in information dissemination has made it possible that the well known method of displaying information using sign posts, notice boards, etc has to be modified by using electronic digital display system. In today’s rapidly advancing technology market, most conventional digital display system are not being implemented using individual logic gates and integrated circuits (ICs) such have been used in the past instead, programmable devices such as microprocessor and microcontroller chips which contain the circuitry necessary to create logic functions are being used to implement digital systems.
The uses of shift register ic as a stable multivibrator and an Arduinonano microcontroller can be used to build less expensive electronic display system. The use of these two major ICs will bring about less board space, less power consumptions and overall, low cost in manufacturing.
This project however; emphasizes mainly on the display of information using two major integrated circuits (ICs) namely shift register and arduinonano to control the lighting of LEDs. This message display circuit is built around readily available, low cost components. It is easy to fabricate. A total of 896 LEDs will be used to display the message of different characters of the user’s choice.
1.2 STATEMENT OF THE PROBLEM
Due to limitation of the sign board or local sign board which could not display clearly at night except light shines on it, it is then necessary that electronic display system is employed to counter the limits of the local sign board. The information displayed on the local sign board is less attractive compared to the information displayed using electronic digital display system.
Thus, researchers are prompted to tirelessly hold up to these challenges by initiating some means of improving the above among which is the construction of an electronic digital display system.
1.3 RESEARCH AIM AND OBJECTIVES
The specific objectives are to:
(i) Construct a LED board using bluetooth from mobile phone.
(ii) To identify the basic components and materials used for the construction of a LED board using Bluetooth from mobile phone.
1.4 CONTRIBUTION TO KNOWLEDGE
In all field of human endeavour, LED digital display system plays very vital role, such as means of advertisement, means of communication, presentations, exhibitions, identification and direction.
1.5 SCOPE OF STUDY
This project covers the use of peripheral solid state electronic components alongside with two major integrated circuits (ICs) namely shift register and Arduino Uno decade counter to solve above stated problems. It will be programmed to allow more than 80 characters to be displayed in an autopilot scrolling manner with the support of smartphone using Bluetooth
1.6 METHODOLOGY
The messaging display system will be interfaced with an android application which will then be used to display information from the comfort of one’s phone to an LED display board using the Bluetooth application interface. The work employs the use of an ATMEGA328p Microcontroller mounted on an Arduino board, a Bluetooth module (HC-06) and an LED display board. Most of these electronic display systems were using wired cable connections, the Bluetooth technology used in this work is aimed at solving the problem of wired cable connections. The microcontroller provides all the functionality of the display notices and wireless control. A desired text message from a mobile phone is sent via android mobile application to the Bluetooth module located at the receiving end. The mobile application was created using online software called App inventor.
1.7 DEFINITION OF TERMS
(i) ARDUINO UNO BOARD: The Arduino uno board is a microcontroller based on ATmega328. It has 14 digital input/output pins in which 6 can be used S PWM output, a 16 MHz ceramic resonator, an ICSP header, USB connection, 6 analog inputs, a power jack and a reset button.
(ii) Light Emitting Diode {LED}: A Light Emitting Diode {LED} is a semiconductor light source that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons. This effect is called electroluminescence. The color of the light (corresponding to the energy of the photons) is determined by the energy required for electrons to cross the band gap of the semiconductor. White light is obtained by using multiple semiconductors or a layer of light-emitting phosphor on the semiconductor device.
(iii) HC-05 BLUETOOTH MODULE: HC-05 Bluetooth is an SSP (serial port protocol) module used for transparent wireless serial connection setup. The HC-05 Bluetooth module can be used in a master or slave configuration, making it a great solution for wireless communication. This serial port Bluetooth module is fully qualified Bluetooth V2.0+EDR (enhanced data rate) 3Mbps modulation with complete 2.6GHz radio transceiver and baseband.
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