1. ELECTRONIC NOTICE BOARD WITH MULTIPOINT RECEIVERS
Presented by
Vineeth Menon
Shyama Pradeep
Geethu Gopakumar
Roshan B.S
ELECTRONIC NOTICE BOARD WITH MULTIPOINT RECEIVERS

2. INTRODUCTION
To develop a new display system in school/colleges classrooms, which can be manipulated from administrator’s room
Deals about an advanced electronic notice board with several receivers

3. PROJECT DESCRIPTION
This project is designed with microcontroller (PIC),16 x 2 LCD, RS232, Buzzer, and Visual Basic
At receiver side,ie, at each classroom a display unit is mounted

4. BLOCK DIAGRAM
POWER SUPPLY
LCD
PIC 16F877
LCD PC
MAX232
LCD

5. BLOCK DIAGRAM DESCRIPTION
POWER SUPPLY
The project requires regulated 5v supply
LM7805 is used as voltage regulator
Provides supply to MAX232,PIC and LCD

6. MAX 232
RS232 is an asynchronous serial communications protocol, widely used on computers
MAX 232 is used as a level shifter
Connected to serial port of PC

8. PERIPHERAL INTERFACE CONTROLLER (PIC)
16F877 is an 8-bit microcontroller
8KB flash memory
3KB data memory
RISC machine
35 set of instructions
5 I/O ports

10. LIQUID CRYSTAL DISPLAY
LCD or Liquid Crystal Display is used in this system for display purpose
LCD used here is 16 X 2 LCD
Each class has its own display

11. FEATURES It is very reliable and saves time
Can store the message in the memory
It eliminates the use of a printer
It is user friendly

12. GANTT CHART

13. ENHANCEMENTS
Can be used to cover a wider range by the use of BLUETOOTH
Can increase the size of LCD so that it will be more practical
Wireless communication using WI-FI
Remote controlled LCD display
Multiplexing

14. CONCLUSION It eliminates the use of a printer It is user friendly
Messages can be sent anytime

15. THANK YOU