Wireless Electronic Notice Board with
Multi Point Receivers using RF Communication System
TECHNICAL SPECIFICATIONS:
Title of the project : Wireless Electronic Notice Board
Domain : Wireless Communication
Software : Embedded C, Keil, Proload
Microcontroller : AT89S52
Power Supply : +5V,
750mA Regulated Power Supply
Display : LED
5mm
Communication Device : RF
Modules
Applications : Colleges,
Schools, offices, public utility places,
Wireless
Electronic Notice Board with Multi Point Receivers using RF Communication
System
ABSTRACT
Notice Board is 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. A separate person is required to take care of this notices display.
This project deals about an advanced hi-tech wireless notice board.
The
project is built around the AT89S52 micro controller from Atmel. This micro
controller provides all the functionality of the display and wireless control.
It also takes care of creating different display effects for given text.
PS2
Keyboard is interfaced to the transmitter to type the data and transmit. The
message can be transmitted to multi point receivers. After entering the text,
the user can disconnect the keyboard. At any time the user can add or remove or
alter the text according to his requirement.
This
project uses regulated 5V, 1A power supply. 7805 three terminal voltage
regulator is used for voltage regulation. Bridge type full wave rectifier is
used to rectify the ac out put of secondary of 230/12V step down transformer.
Advantages:
Wireless System
Text can be
entered from remote place
Data will not be
lost in power failure condition
Applications:
Offices,
educational institutions, bus stations, railway stations and other public
utility places
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