ZIGBEE NOTICE BOARD. Presented By: Yash Shah (D.J.S.C.O.E.) Zarna Parekh (D.J.S.C.O.E.) Hansal Shah (D.J.S.C.O.E.) Guided by : Prof.Ninad Mehendale. Abstract. Wireless board Message sent by the PC is transmitted through Xbee at free of cost and displayed on Graphic LCD.
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Guided by :
Message sent by the PC is transmitted through Xbee at free of cost and displayed on Graphic LCD.
Range of Xbee is 300-400m.
Advanced hi-tech notice board.
Information transmitted at a much faster rate.
Interfacing a display with microcontroller and updating the data to be displayed using a zigbee module.
Zigbee is a low power wireless technology.
ZigBee is a technology of data transfer in wireless networks.
Zigbee is a PAN technology based on the IEEE 802.15.4 standard.
ZigBee devices have the ability to form mesh networks between nodes, which can be expanded and multiplied in order to cover larger area.
It has low energy consumption and is designed for multi-channel control systems, alarm systems, and lighting control.
It also has various home and industry applications.
Conversion Of Coloured To Black & White Image
128 x 64 pixels
Black & White
Gray Scale: 0-255
Greater than 128 = 1
Less than 128 = 0
Colour to Gray Scale
Coloured to Black & White
Flowchart Of Microcontroller
Read data from Xbee
Is any new data
Algorithm Of Microcontroller
Read data from Xbee
Checks if any new data is there
If yes Refresh GLCD else read for new data from Xbee
After refreshing the GLCD it will again check for new data and this process continues.
Flowchart Of MATLAB Programming
Read Image (B)
Convert to Gray Scale
Convert to Black and White
Is size greater than or less than or equal to
128 x 64
Transmit to USB
Is end of Program
Algorithm Of MATLAB Programming
The program will read the image.
Check whether the image is coloured.
If yes, it will convert to Gray Scale and then to Black & White or else directly to Black & White.
It then checks for the size, if it is greater than 128x64 it will shrink the image and if its less than 128x64 it will enlarge.
The image is transmitted to USB COM port.
It will check for the last image, if it is the last image it will end the program or else will read a new image
Recovery of data after power failure.
At schools, colleges for displaying assignments.
Public places, hospitals, government offices etc.