Tuesday, 14 January 2014

week 4



Week 4

http://www.youtube.com/watch?v=CqOZESnZkDsTHIS IS THE VIDEO REPRESENTATION OF THE PROJECT :
DTMF BASED HOME AUTOMATION SYSTEM
IT CONATINS DTMF DECODER, MICROCONTROLLER DEVELOPMENT BOARD,
RELAY DRIVER AND THE RELAY

THE MOBILE PHONE IS CONNECTED TO THE DTMF DECODER
THE DTMF DECODER , DECODES THE SIGNAL AND CONVERTS
TO BINARY,

THE MICOCONTROLLER READS THE DATA AND CONTROL THE RELAY

demo:

make a call this number
the mobile should be configured in auto answer mode
once the call is received , it will send the dtmf signals
to the out from the audio jack,

now the micocontroller reads this data and control the relay

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