1. POORNIMA COLLEGE OF ENGINEERING A PRESENTATION ON MAJOR PROJECT SEMINAR(STAGE-II) “GSM BASED E-NOTICE BOARD”
SUBMITTED TO: SUBMITTED BY: Mr. MANISH SINGHAL PAWAN KUMAR PRAJAPAT (EC/09/140)
Mr. S.VENKATESH RAGHUVEER SINGH(EC/09/62)
PANKAJ GUPTA (EC/09/92)
PARAMJEET(EC/09/120)
ECE-FINAL YEAR

2. CONTENT 1. AIM OF THE PROJECT 2. EXISTING SYSTEMS IN MARKET
3. INTRDUCTION
4. SCOPE OF WORK AND IDEA
5. BLOCK DIAGRAM
6. CIRCUIT DIAGRAM
7. COMPONENT LIST
8. THE MICROCONTROLLER
9. DISPLAY UNIT(LCD)
10. GSM MODULE
11. MAX232 IC
12. PROGRAMMINGFEASIBILITY
13. APPLICATION AND PURPOSE
14. FURTHER ENHANCEMENT
15. WORK DISTRIBUTION BETWEEN TEAM MEMBERS
16. REFRENCES 2

3. AIM OF THE PROJECT
The main aim of the project will be to design a GSM based electronic notice display system which can replace the currently used programmable electronic display.
We can display anything we want through the use of a SMS via a mobile through implementation of a GSM modem in the project. 3

4. EXISTING SYSTEMS IN MARKET
currently programmable electronic display are not wireless and SMS based display of information on notice board.
There remains a particular message in the programming phenomenon of the system. 4

5. INTRODUCTION
The message containing the information would be display on the LCD screen via a GSM modem.
The message to be displayed is sent through a SMS from an authorized transmitter.
The microcontroller receives the SMS, validates the sending Mobile Identification Number (MIN) and displays the desired information. 5.

6. SCOPE OF WORK AND IDEA
In controlling the appliances using wireless communication and Embedded System.
Work on “Embedded System in Communication” is widely do in this project.
The main idea is that a GSM modem receives a SMS and The microcontroller validates the SMS and then displays the message in the LCD display board. 6. 1

7. BLOCK DIAGRAM 7.

8. CIRCUIT DIAGRAM 8

9. COMPONENT LIST
Microcontroller LCD display Microcontroller(at89c51) Resistance(470,330,1k) Crystal oscillator( mhz) Capacitors(33pf,10MF,1MF) MAX 232 GSM module(Simado GDT11 ) SIM card Power adepter(+5v) lcd display(4*20 text lcd) resistance array(10k) 9

10. THE MICROCONTROLLER 10

11. DISPLAY UNIT(LCD) 11

12. 12

13. GSM MODEM
The GSM modem provides a low cost, long range, wireless communication channel for applications that need connectivity rather than high data rates. 13

14. GSM modem and micro-controller interfacing:14

15. AT COMMANDS 15

16. cont… Some at-commands for gsm modem:
AT+CMGF = 1 Select the text mode for SMS ;This command configures the GSM modem in text mode.
AT+CMGS = for sending SMS message in text mode along with mobile number to the GSM Modem 16

17. MAX232 IC
The MAX232 is a dual driver/receiver that includes a capacitive voltage generator to supply TIA/EIA-232 voltage levels from a single 5-V supply.
The microcontroller is interfaced with PC or the GSM MODEM via a MAX 232 to convert TTL logic to EIA 232 or RS232 and vice versa. 17

18. Pin description of MAX 232 IC18

19. INTERNAL ARICHECTURE 19

20. PROGRAMMING FEASIBILITY
Express pcb
Embedded c
Proteus design
Keil compiler 20

21. Institutional Use: In colleges an Univ. Industrial organization
APPLICATIONS
Institutional Use: In colleges an Univ.
Industrial organization
Railway station
Managing traffic
Advertisement
Banking system
Emergency message display in Hospitals 21

22. Faster and more efficient service Reduces human efforts
ADVANTAGES
Faster and more efficient service
Reduces human efforts
Increases efficiency
Reducing delays
Reduces human errors.
Digitalization of all campous.
Low maintance cost
Increase green economy.
Save paper
Long time display 22

23. High installition cost. Dependency on N/W.
DISADVANTAGES
DISADVANGE
High installition cost.
Dependency on N/W.
Limiations on character Lcd display. 23

24. Farmers can turn on or off pump and drippers via gsm modem.
FURTHER ENHANCEMENTS
Alphanumeric LCD’S have a limitation on size and character display. We can use a LED ARRAYS to remove the limitation.
Robots can be controlled in a similar fashion by sending the commands to the robots. These commands are read by using AT commands and appropriate action is taken.
Farmers can turn on or off pump and drippers via gsm modem. 24

25. WORK DISRRIBUTION AMONG TEAM MEMBERS
Paramjeet: Drilling, Etching and component mounting, Documentation.
Pawan prajapat: PCB designing on EXPRESS 7PCB or DIPTRESS, simulation on PROTEUS ,soldering.
Pankaj Gupta and Raghuveer Singh: Circuit designing, Coding, Debugging, Component purchasing, Documentation. 25

26. REFRENCES 1. “8051 and embedded system” by Mazidi and Mazidi
2. All datasheets from
3. About AT89s8252 from
4. And
5. About DS1820 from 6. 26

27. 27

28. Queries???.. 28