Wireless E-Notice Board Using Wi-Fi and Bluetooth Technology

Journal of Network Communications and Emerging Technologies (JNCET) www.jncet.org

Volume 6, Issue 4, April (2016)

ISSN: 2395-5317 ©EverScience Publications 14

Wireless E-Notice Board Using Wi-Fi and Bluetooth

Technology

A.Meenachi

UG Scholar/Nandha Engineering College/ Erode/ Tamil Nadu/ India.

S.Kowsalya

UG Scholar/Nandha Engineering College/ Erode/ Tamil Nadu/ India.

P.Prem kumar

Associate Professor & Head/ECE/Nandha Engineering College/ Erode/ Tamil Nadu/ India.

Abstract—This document deals with an innovative rather an

interesting manner of intimating the message to the people

using a wireless electronic display board which is synchronized

using the WI-FI technology. This will help us in passing any

message almost immediately without any delay just by sending

a SMS which is better and more reliable than the old

traditional way of passing the message on notice board. This

proposed technology can be used in colleges,many public

places, malls or big buildings to enhance the security system

and also make awareness of the emergency situations and avoid

many dangers. Using WI-FI module and Bluetooth module

display the message onto the display board.

Index Terms—

WI-FI module, Bluetooth module, Arduino,

8x8matrix display,microcontroller,muti terminal

1. INTRODUCTION

In this world Mobile Phones and the related technologies are

becoming more and more prevalent. Various technical arenas

in the field of Telecommunication and Embedded Systems are

becoming omnipresent in the people. The use of cell phones

has rapidly increased over the last decade and a half.

Upgradation in networking technologies has encouraged the

development and growth of very dense networks. Now-a-days

the general mass prefer communicating while on the move

therefore landlines usage has been drastically reduced.

Notice boards are one of the widely used ones ranging from

primary schools to major organizations to convey messages at

large. A lot of paper is been used and which is later wasted by

the organizations. This in turn leads to a lot of deforestation

thus leading to global warming. Small innovative steps in

making use of technology for regular purposes would

have an adverse effect on the environment issues which

we are presently concerned about. The main aim of this paper

is to design a SMS driven automatic display Board which can

replace the currently used programmable electronic display

and conventional notice boards.

It is proposed to design to receive message in display toolkit

which can be used from an authorized mobile phone. The

whole process can be described from the transmitter and

receiver section. The WIFI/BLUETOOTH module receives a

message from the authorized mobile phone and the message is

extracted by the microcontroller from the

WIFI/BLUETOOTH module and is displayed on the

MATRIX display board. Serial to parallel communication is

used for the entire process from WIFI module to

Microcontroller and from microcontroller to the matrix

display. And for the acknowledgement LCD display is used.

This

proposed system in this paper has many upcoming

applications in educational institutions and organizations,

crime prevention, traffic management, railways,

advertisements etc. Been user friendly, long range and faster

means of conveying information are major bolsters for this

application. By using this proposed methodology we can

enhance the security system and also make awareness of the

emergency situations and avoid many dangers.

2. RELATED WORK

Intimating the message to the people using a wireless

electronic display board which is synchronized using the

GSM technology. This will help us in passing any message

almost immediately without any delay just by sending a SMS

which is better and more reliable than the old traditional way

of pasting the message on notice board. This proposed

technology can be used in many public places, malls or big

buildings to enhance the security system and also make

awareness of the emergency situations and avoid many

dangers. Using various AT commands is used to display the

message onto the display board. GSM technology is used to

control the display board and for conveying the information

through a message sent from authenticated user.

Journal of Network Communications and Emerging Technologies (JNCET) www.jncet.org

Volume 6, Issue 4, April (2016)

ISSN: 2395-5317 ©EverScience Publications 15

3. PROPOSED MODEL:

3.1 DESCRIPTION OF THE PROPOSED METHOD :

3.1.1 USING HC-05:

A. Operating environment.

The objective is to be able to stand near the Arduino and

casually acquire live data. The equipment is claimed to work

over 10m. I have used it over 15m with clear line of sight.

One wall of lightweight domestic construction will cut the

range to about 5m maximum, and a single layer of foil

building insulation can kill it stone dead. This last can mean

that indoor to outdoor communication could be pretty risky.

B. Equipment used:

1) A standard Arduino Uno or Mega. Any 5volt Arduino

should suffice.

2) An HC-05 or HC-06 bluetooth module is used.The HC-06

operates as a slave only but is entirely suitable for this

exercise. The HC-05 can operate as a master and thus has

more commands. I don’t think there is much difference in the

price, and its extra versatility may be of value in the future.

3) A means of connection. I use a four-conductor cable to a

header on a proto shield. A breadboard lashup would suffice,

or female-male leads direct into the Arduino headers. You

could solder the module directly into a proto shield. In this

event, it would be wise to have a jumper in the 5v line so that

Bluetooth can be isolated while the code is uploaded.

This may be as simple as running 1k and 2k between Tx and

ground. The picture shows an example,

Connecting Arduino with Bluetooth.

C. The communication method and the connections required:

This is all about using the standard serial protocol using

hardware, using pins D0 and D1 on the Arduino, which are

clearly marked for the purpose. Pin D0, Rx, is the receiver

and therefore connected to the Tx pin on Bluetooth. This

means D1 is connected to Rx on Bluetooth.

Journal of Network Communications and Emerging Technologies (JNCET) www.jncet.org

Volume 6, Issue 4, April (2016)

ISSN: 2395-5317 ©EverScience Publications 16

This is not about the alternative procedure, known as

“software serial” so, if in the unlikely event that you really

do have a need to use software serial for Bluetooth, read no

further.

The only other connections required are the standard 5v and

ground. I believe all HC-05s come with six pins. You don’t

need the other two for this exercise. And yes, the HC-0x

modules are 3.3v devices but note that the JY-MCU package

level shifters on board for the power supply and is clearly

labelled for 3.6 to 6v operation.

Note particularly that, while Bluetooth modules come in two

types, master and slave, these characteristics are entirely

irrelevant to this exercise, and the words will not be

mentioned again until the appendix at the end – a section

that you don’t need to read.

D. Notes on what the bluetooth module is about:

The bluetooth is a separate device between Arduino and

Android. To the Arduino, it is just another serial device,

indeed it is indistinguishable from the serial monitor and is

used in the same way. To the Android, it is just another

Bluetooth device to be paired with, and the fact that there is

an Arduino connected to it is immaterial. What this

particularly means is:

1)Arduino is not involved with the pairing. It is just providing

the power and, if there was another source of power, it

needn’t be connected.

2)Consequently, a successful pairing is just between

Bluetooth and Android, and does not guarantee successful

communication with the Arduino.

3)Similarly, the serial communication between Bluetooth and

Arduino does not guarantee successful communication with

Android. Note that there is no way of checking

communication from Arduino to Bluetooth other than getting

the signal all the way to Android.

4)All the procedure for pairing and establishing connection is

done at the Android end.

3.1.2. USING ESP8266:

Description: The ESP8266 WiFi Module is a self contained

SOC with integrated TCP/IP protocol stack that can give any

microcontroller access to your WiFi network. The ESP8266 is

capable of either hosting an application or offloading all Wi-

Fi networking functions from another application processor.

Each ESP8266 module comes pre-programmed with an AT

command set firmware, meaning, you can simply hook this up

to your Arduino device and get about as much WiFi-ability as

a WiFi Shield offers The ESP8266 module is an extremely

cost effective board with a huge, and ever growing,

community.This module has a powerful enough on-board

processing and storage capability that allows it to be

integrated with the sensors and other application specific

devices through its GPIOs with minimal development up-

front and minimal loading during runtime. Its high degree of

on-chip integration allows for minimal external circuitry,

including the front-end module, is designed to occupy

minimal PCB area. The ESP8266 supports APSD for VoIP

applications and Bluetooth co-existance interfaces, it contains

a self-calibrated RF allowing it to work under all operating

conditions, and requires no external RF parts.There is an

almost limitless fountain of information available for the

ESP8266, all of which has been provided by amazing

community support. In the Documents section below you will

find many resources to aid you in using the ESP8266.

ESP8266 Pin diagram:

4. SOFTWARE USED:

4.1..PROTEUS:

The functional approach and the extensive library of built-in

functions allow to write very short but powerful scripts; to

keep them comprehensible, medium-length keywords were

adopted.The user, besides writing new high-level functions in

Proteus, can add new functions in C/C++ by following the

guidelines and using the templates available in the software

development kit; the new functions can be invoked exactly

the same way as the predefined ones, passing expressions by

value or variables by reference.Proteus is an interpreted

language: programs are loaded into memory, pre-compiled

and run; since the number of built-in functions is large,

execution speed is usually very good and often comparable to

that of compiled programs.

Journal of Network Communications and Emerging Technologies (JNCET) www.jncet.org

Volume 6, Issue 4, April (2016)

ISSN: 2395-5317 ©EverScience Publications 17

5. OPERATIONAL FLOWCHART:

FLOWCHART:

6. CONNECTING THE ESP TO AN ARDUINO:

The logic connections between Arduino and ESP are

very simple: ESP-Rx goes to Arduino Tx, ESP-Tx goes

to Arduino Rx. However, all ESP-8266 run on 3.3V,

while Arduino pins run on 5V. Before connecting them,

you shall provide a way to adapt these voltages, or you

could damage your ESP.

7. SERIAL TERMINAL SOFTWARE :

7.1.BASIC TERMINOLOGIES:

Here are some terms you should be familiar with when

working within a serial terminal window. Many of these terms

are covered in a lot more detail in our Serial Communication

tutorial. It highly recommended that you read that page as

well to get the full picture.

ASCII - Short for the American Standard Code for

Information Interchange’s character encoding scheme, ASCII

encodes special characters from our keyboards and converts

them to 7-bit binary integers that can be recognized by a

number of programs and devices. ASCII charts are very

helpful when working with serial terminals.

Baud Rate - In short, baud rate is how fast your data is being

transmitted and received. 9600 is the standard rate, but other

speeds are typical amongst certain devices. Just remember

that all the links in your chain of communication have to be

“speaking” at the same speed, otherwise data will be

misinterpreted on one end or the other.

Transmit (TX) - Also known as Data Out or TXO. The TX

line on any device is there to transmit data. This should be

hooked up to the RX line of the device with which you would

like to communicate.

Receive (RX) - Also known as Data In or RXI. The RX line on

any device is there to receive data. This should be hooked up

Journal of Network Communications and Emerging Technologies (JNCET) www.jncet.org

Volume 6, Issue 4, April (2016)

ISSN: 2395-5317 ©EverScience Publications 18

to the TX line of the device with which you would like to

communicate.

COM Port (Serial Port) - Each device you connect to your

computer will be assigned a specific port number. This helps

to identify each device connected. Once a device has a port

assigned to it, that port will be used every time that device is

plugged into the computer. Note that Mac and Linux COM

ports have a different naming convention.

7.2.TERMINAL WINDOW:

when a message is sent in the specified format, then a series

of commands are executed which can be seen in a Hyper

Terminal whenthe kit is connected to the COM PORT of PC.

8. MATRIX DISPLAY:

Connecting Dot Matrix LED Display with

microcontroller:

An LED Matrix consists of an array of LED’ s which are

interconnected such that the positive terminal (anode) of each

LED in the same column are connected together and the

negative terminal (cathode) of each LED in the same row are

connected together. Note that this could be the other way

around as well, with the positive terminals connected to the

rows and the negative terminals connected to the columns.8x8

LED Matrix Schematic An LED dot matrix display (“dot”

refers to the circular lenses in front of the LEDs) can also

come with multiple LEDs of varying colors behind each dot

in the matrix. For example, the matrix used in this project has

a Red, Green and Blue LED behind each dot in the 8x8 grid.

A configuration with multiple LEDs behind each dot adds

another control pin to every column (positive terminal) for

each additional color of LED, while the rows (negative

terminals) are still all connected together. Therefore an RGB

matrix has 32 control pins compared to the 16 pins.

Controlling the LED Matrix Since all of the individual LED’s

in a matrix share their negative and positive terminals in each

row and column, it is not possible to control each individual

LED at the same time. Instead, the matrix is controlled by

cycling through each row very quickly while triggering the

correct column pins to light the desired LED’s for that

particular row.

8x8 dot matrix led connection with microcontroller.

If the switching is done at a quick enough rate, there will be

no visible flicker and the LED matrix display will appear to

have each LED turned on at the same time. This works

because of the principle known as Persistence of Vision,

which is the theory that the retina of the human eye retains an

image for about a tenth of a second. Thus an LED matrix

must be very precisely controlled, with the Rows being

scanned through sequentially at a rate greater than about 40Hz

(to be safe) while sending out the column data at the exact

same rate. This kind of control is most easily accomplished

with the aid of a microcontroller, plus some additional

components.

Programming the Microcontroller The Atmel ATMEGA8L

can be programmed using BASIC, C, or Assembly language.

After the code is written, it is compiled using the compiler

which outputs a Hex file that can then be directly downloaded

to the microcontroller. The Hex file is downloaded via an

In‐Circuit Programmer that connects the microcontroller to

the parallel port of a PC.

9. SIMULATION RESULTS

Before going on to the proposed design practically, the results

were verified in 8051 simulator. Using this simulator various

modules of the project are constructed with the tools available

in the simulator. And then by making the appropriate

circuit connections as discussed earlier using the virtual wires

and then writing the hex code onto the virtual microcontroller

we can observe the results of the proposed method. The

process of simulation of the project is as follows.

Journal of Network Communications and Emerging Technologies (JNCET) www.jncet.org

Volume 6, Issue 4, April (2016)

BOTTOM SHIELD for mother board.

Figure shows the schematic diagram built using the tools

available in the simulator. It shows all the components of

the project such as WI-FI module, Microcontroller and

Display board and the connections between them.

Daughter board view 1.

This figure shows the initialization process of module and

microcontroller using AT commands. The two virtual

terminal windows in above figure shows the commands

execute in the microcontroller that are passed onto the

display board.

OUTPUT :

Initially when power is switched on and all the modules are

kept ready, as there is no message is sent to the WIFI module,

the board displays the default message fed into it as shown in

above figure.

10. MULTI TERMINAL:

Android application:

The MultiTerminal is intended for simultaneous management

of multiple accounts, such as WIFI and BLUETOOTH for

which is mostly helpful for transmitting messages to the

display.

The new terminal successfully combines great functionalities

that allow effective transferring with many accounts and with

exceptional usabilityTerminal can easily get acquainted to this

new program within a few minutes. After installing the

application in mobile phone it need to configure with

password.

11. CONCLUSION:

As the technology is advancing every day the display

board systems are moving from Normal hand writing

display to digital display. Further to Wireless display

units. This paper develops a photo type laboratory model

wireless notice board system with WIFI MODULE and

BLUETOOTH connected to it, which displays the

desired message of the user through an SMS in a most

populated or crowded places. This proposed system has

many upcoming applications in educational institutions

and organizations, crime prevention, traffic management,

railways, advertisements etc. Been user friendly, long

range and faster means of conveying information are major

bolsters for this application. By using this proposed

methodology we can enhance the security system and also

make awareness of the emergency situations and avoid

many danger

Journal of Network Communications and Emerging Technologies (JNCET) www.jncet.org

Volume 6, Issue 4, April (2016)

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[1] Muhammad Ali Mazidi, Janice G. Mazidi, Rolin

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India.

[2] SMS And MMS Interworking In Mobile Networks Arnaud Henry-

Labordère , Artech House mobile communications, 2004 -

Technology & Engineering.

[3] Ayala, Kenneth J. (1996), The 8051 Microcontroller- Architecture,

Programming and Applications, DelmarPublishers, Inc. India

Reprint.

[4] GSM telecommunication standards, June 2000Second edition,

European Telecommunications Standards Institute.

[5] M Samiullah, NS Qureshi,”SMS Repository and Control System

using GSM-SMS Technology,” European journal of scientific

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[6] www.wikipedia.org

[7] "RS232 Tutorial on Data Interface and cables". ARC

Electronics. 2010. Retrieved 28 July 2011.

[8] C.H.Papadimitriou and K. Steiglitz, “Combinatorial

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1108,1982.

[9] M. Grotschel, L. Lovasz, and A. Schrijver, “Geometric Algorithms

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