Notice Board is essential 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. This project deals with an advanced wireless notice board.
The primary goal of this project is to develop a wireless notice board that DISPLAYs messages sent from the client’s mobile. At the point when a client sends message from his cell phone, it is received by a SIM loaded GSM modem at the receiverunit.
The GSM modem is appropriately interfaced through level shifter IC for setting up RS232 communication protocol to the microcontroller. The message so received is thus sent to the microcontroller that further displays it on electronic notice board which is equipped with a LCD display interfaced to a microcontroller from 8051 family dualy powered by a regulated power supply from mains supply of 230 volt ac.
Further development to this project is done by giving message storage by non-volitale memory i.e. EEPROM connected to the microcontroller for reterival of old messages if required. It can likewise be extended to a bigger LCD screen.