Wireless Electronic Notice Board Using Voice Recognition.With the advent of advance technology nowadays, the wireless communication is proving its importance in each and every field of today’s era. This system deals with use of one such wireless technology. The proposed system is a combination of hardware as well as software. The main idea of the project is to develop an electronic notice board which will display the content entered by user’s voice in his mobile phone. This in turn will reduce the paper consumptions and wastage of time involved in conventional notice board. In speech controlled electronic notice board is very friendly to user and can operate merely from a distance of 10 meters(approx). Here, installed application operates on Voice recognition concept which will be embedded in a microcontroller interfaced with Bluetooth device. Bluetooth wireless technology helps in communication area, and is the fastest growing fields within the wireless technologies.

1. SUBMITTED BY: AYUSHI JAIN
B.TECH III YEAR
(TEN1503005)
WIRELESS NOTICE BOARD DISPLAY
USING BLUETOOTH

2. CONTENTS
• Project overview
• Block diagram
• Microcontroller
• Android App and Bluetooth Device
• Advantages
• Applications
• Future scope
• Conclusion

3. Introduction
• The main objective of the project is to develop a
wireless notice board that displays notices.
• Voice is converted to data from the user’s android
application device.
• Remote operation is achieved by any smart-
phone/Tablet etc., with Android OS, upon a GUI
(Graphical User Interface) based touch screen
operation.

4. ABSTRACT
Notice Boards are a common occurrence in variety of
institutions which we come across on a daily basis. In
the upcoming days, the notice/ advertisement boards
are being managed manually. There is a long process
involved in order to put up notices on the notice board.
This wastes a lot of resources like paper, printer ink,
man power and also brings about loss of time. In this
project, we have proposed a system which will enable
people to wirelessly transmit notices on a notice board
using microcontroller. We can also make the system
compatible with more than one wireless technology.

5. EMBEDDED SYSTEM
• Embedded system is a combination of computer software and
hardware along with the mechanical and electrical parts are
designed to perform certain task.
• ADVANTAGES OF EMBEDDED SYSTEM
• It is easier to understand.
• Performs same task all the time, so there is no extra usage of
memory and space takes place.
• Hardware costs uses in embedded system costs very low.
• Suitable for Industrial purposes.
• Performs one task at a time.
• Simple in nature.

6. INTRODUCTION OF AVR
MICROCONTROLLER
The main idea of the voice operated electronic board show is
to point out messages and to regulate them by our own
voice.
Speech controlled electronic notice board has extra
advantage of simple use, User needs to formulate message
in his/her own voice to regulate it and displayed on electronic
notice board.
Voice recognition is finished within the android application.
User needs to install the application AMR_voice.
Bluetooth wireless technology is a technique having the
wireless a part of the communication channel; through which
utilized message have been transmit and receive knowledge

7. Software requirements
1. Keil u-Vision 3.0:
• Keil Software is used to provide you
with software development tools for
8051 based microcontrollers. With
the Keil tools, you can generate
embedded applications for virtually
every 8051 derivative.
2.PRO51 Programmer Software:
• Proteus software is used simulate
the circuit by drawing the Complete
circuit diagram and burning the
program hex file into microcontroller
in software.
HARDWARE
REQUIREMENTS
1.PROCESSOR
2.GSM MODEM
3. LCD
4.MAX23
5.POWER SUPPLY

8. INTERFACING OF LCD WITH
AVR
One of the most common devices LCD attached with
microcontroller ATmega16 is an LCD (Liquid Crystal
Display). It is compatible for screen display of notice
board. Here we have used 16x2compatible module,
having 16 pins including 2 pins for backlight. The
LCD is used to display with green background with
black text.

9. INTERFACING THE
MICROCONTROLLER WITH
BLUETOOTH DEVICE
• Super simple and easy way to interface using Bluetooth stack.
• 3.3V Device with standard 5V DC Power source.
• Can also support SPI Protocol, pins are made available.
• Low power consumption, Low cost.
• Has high-performance wireless transceiver system
• Can be used to interface with PC, Mac or Android
phones/tablets.
• Generic Default Visibility at Software side:HC-05.
• Default Pairing code is not '0000' but '1234'.
• Works with any microcontroller with Serial connectivity.

10. MICROCONTROLLER
• It is a smaller computer
• Has on-chip RAM, ROM, I/O ports...
RAM ROM
I/O
Port
Timer
Serial
COM
Port
Microcontroller
CPU
A single chip

11. ATMEGA 16 MICROCONTROLLERS
PIN CONFIGURATION

12. PROJECT IMPLEMENTATION

13. THEORY OF OPERATION
In this project, we interfaced ATmega16 microcontroller
with mobile phone Bluetooth application AMR Voice to
decode the received message and do the required action.
The protocol used for the serial communication between
the two is interfaced device command. The
microcontroller pulls the message received by phone,
decode it, recognizes the voice of the user , and then
displayed attached to its port to control the appliances on
LCD. After successful operation, displayed the notice on
the LCD.

14. PROTEUS DESIGN

15. WHAT IS
AN ANDROID APPLICATION
ON MOBILE PHONES?
• An android app is meant for phones with an android
based operating systems. They can be downloaded
from the android app Market which is pre-loaded on
every android phone.
• Blue control APP and Bluetooth Spp APP are some
examples.

16. AMR_VOICE
DESCRIPTION OF PROJECT
Interfaced ATmega16 microcontroller with
mobile phone Bluetooth application AMR
Voice to decode the received message and
do the required action Interfacing of
microcontroller with LCD.
We used an android application to take out
the signal from mobile phone to transmit it to
microcontroller.
LCD displayed the voice command given
through the bluetooth to microcontroller
atmega16.

17. FUTURE IMPROVEMENT
• The very effective improvement will be added is multilingual
display for this system.
• The alphanumeric LCDs carrying the limitation on size and
number of characters would be able to replace with large LED
boards.
• Robotics technology can be controlled in a similar fashion by
sending the commands to the robitics, After a display board
receives the valid message through the android application and
displays it.
• Interfaced devices can be added by programming to the
microcontroller to use different encoding decoding schemes as
per the embedded language, Achievable and targetable output
can also be obtained through graphical display.

18. CONCLUSION
• By introducing the concept of wireless technology in the Field of
the communication we can make our communication more
efficient and faster, with greater efficiency. We can display the
messages with less errors and maintenance. This system can be
used in college, school, offices, railway station and commercial
as well as personal used. The above technical project explains
how we can develop as well as modify voice control Android
based wireless notice board.
• The GSM based digital notice board system that has been in
practical use in various companies like in construction companies
and research areas, railways. Colleges. This system can avoid
paperwork, reduces human effort usage in definite purpose
areas.

19. THANK YOU
I WISH TO EXPRESS MY SINCERE THANKS TO DIRECTOR, PROF. AJAY
RUHELA, FOR PROVIDING THE COLLEGE FACILITIES FOR COMPLETION OF
THE TRAINING.
I EXPRESS MY SINCERE GRATITUDE TO MR. RAGVENDRA KUMAR
SINGH , I WISH TO EXPRESS MY SINCERE THANKS TO HOD BIDYUT
CHATEERJEEOF ELECTRICAL DEPARTMENT.
I WOULD LIKE TO THANK ALL THE FACULTY MEMBERS, SUPPORTING STAFF OF
THE DEPARTMENT OF EEE AND FRIEND FOR THEIR COOPERATION AND
VALUABLE HELP FOR COMPLETING THIS INDUSTRIAL TRAINING.
PRESENTED BY : AYUSHI JAIN