Wireless Electronic Notice Board - IRD India

International Journal on Advanced Computer Theory and Engineering (IJACTE)be asleep a significant amount of the time therebygiving long battery life. A ZED requires the leastamount of memory, and therefore can be lessexpensive to manufacture than a ZR or ZC. [6]A. Transmitter sectionFig. 3.Block diagram of TransmitterFig. 1.Zigbee devicesIV. SYSTEM DESIGNThe proposed system consists of Transmittersection and Receiver section. The complete schematic isas shown:Transmitter Section mainly consists of serial portinterfaced to Zigbee Module via MAX232. Module ofXBEE Series2 of Digi Inc. [4] has been used. The Xbeeradios are programmed using X-CTU software in APImode with the desired baud rate. Screenshots of X-CTUare shown in Fig. 6. A .Net based GUI application isdeveloped on PC which enables the user to displaymessage. The application authenticates user and thenallows to display message.Fig. 4.X-CTUFig. 2. SchematicFig. 5.Voltage Regulator3ISSN (Print) : 2319 – 2526, Volume-2, Issue-3, 2013