Zigbee Based Electronice Notice Board

Abstract

This Project deals about designing a wireless notice board which can be accessed remotely using advanced Zigbee technology. Zigbee is a Personal Area Network technology based on the IEEE 802.15.4 standard. This technology is a low data rate, low power consumption, low cost wireless networking protocol targeted towards automation and remote control applications. In terms of battery life, cost, complexity of protocol stack and number of nodes participating in mesh network Zigbee is better than other WPANs, such as Bluetooth. It is one of the new technologies in the embedded field to make the communication between microcontroller and computer. Zigbee uses a basic master –slave configuration suited to static star networks of many in frequently used devices that talk via small data packets. The hardware of the project consists of two parts :Zigbee transmitting module and Zigbee receiving module. The keyboard is connected n the transmitter side, whatever the text is typed on the transmitter side the same is received on the the receiver side. At any time the user can add or remove or alter the text according to his requirement. The project is built around the AT89S51 microcontroller from Atmel. The microcontroller provides all the functionality of the display and wireless control. Assembly language is used to program the microcontroller.