WIRELESS PLACARD USING MOBILE COMMUNICATION SYSTEM

Abstract This paper carries out a detailed review of the various techniques employed in the recent years in GSM technology. It discusses the current innovations in technology, and within this context, the operation of wireless electronic placard using GSM technology / mobile communication system has been reviewed. The important techniques used in past are also tabulated. Placard or 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. This project deals with an advanced wireless placard. We know the importance of placard in public places like railway stations, bus stations and airports. But changing notices day-to-day is a difficult task. A separate person is required to take care of this notice display. This project deals about an advanced high technology wireless notice board. This article explains you how to design a wireless electronic placard using GSM technology. The project displays the data on LCD whatever we sent from the mobile. The main objective of this project is to develop a wireless placard that displays messages sent from the user’s module. When a user sends a message from his mobile phone, it is received by a SIM loaded GSM modem at the receiver unit. The GSM modem is duly interfaced through arduino uno. The message so received is thus sent to the arduino uno that further displays it on electronic notice board which is equipped with a LCD display interfaced to aarduino uno duly powered by a regulated power supply from mains supply of 230 volt ac. Keywords: GSM, ARDUINO UNO, LCD, VOLTAGE REGULATOR