ABSTRACT:
Mobile and Wireless dissemination of information is becoming big business and also becoming critical in the public places because of the convenience the system affords. This technology is useful in advertisements, stock market information dissemination and so on. Information has lifespan; therefore opportunities are wasted daily as a result of lack of timely dissemination of information and the convectional system of disseminating notices, of advertising to the general public or changing and managing information from time-to-time is a difficult and cumbersome process. There is therefore a need to develop a system that can be used to disseminate information on time anywhere the user is. A prototype of the system has been developed in the computer science department, Federal University of Technology Akure. The prototype aims at using microcontroller and Smartphone to wirelessly send information to a digital display board using GSM Technology. The hardware board at the heart of the system contains ATMEGA 328P microcontroller. The microcontroller is interfaced with GSM Modem via MAX232 level converter which is used to convert RS232 voltage levels to TTL voltage levels and vice versa. A 16x2 Character LCD display and alphanumeric panel is attached to microcontroller for display. Microcontroller coding is done using Embedded C and MicroC software package. A test case carried out on the prototype developed performs excellently.
Keywords:
Modem, GSM, Microcontrollers, ATMEGA, Smartphone
