GSM Based e-Notice Board

Computer Engineering

Notice board is the one of the best medium to communicate with the mass media. Notice boards are commonly used at the public utility places. The project, GSM Supported e-Notice Board is an SMS-based and Android-driven Digital display board system, designed to improve the noticing processes by using GSM. The proposed system will help user to display notices from anywhere with the help of user's Android mobile phone, wirelessly. Android application provides security to the system. User sends the notices by SMS, which is received at GSM modem and display on LCD notice board. Performance of single-segment Short message service (SMS) (i.e., the message sizes are smaller than 140 octets) has been intensively investigated. On the other hand, multi-segment messages (with sizes larger than 140 octets) are seldom evaluated in the literature. It presents an SMS based notice board incorporating the widely used GSM to facilitate the communication of displaying message on notice board via user’s mobile phone. Its operation is based on microcontroller ATMEGA32 programmed in assembly language. A SIM300 GSM modem with a SIM card is interfaced to the ports of the microcontroller with the help of AT commands. When the user sends a SMS via a registered number from his mobile phone, it is received by SIM300 GSM modem at the receiver’s end. SIM300 is duly interfaced through a level shifter IC MAX32 to the microcontroller. The messaged is thus fetched into the microcontroller. It is further displayed on an electronic notice board which equipped with LCD display interfaced to microprocessor powered by a regulated power supply from mains supply of 230 volts ac. This project is our experiment on real time noticing.

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.