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sms based device switching

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jagadish77

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hello sir,
i am jagadish,an engineering student willing to do project on the sms based device control..but not even a website has full info regarding the project.so can u please help me out in prescribing an website regarding this project...or any info for this project...
thank you....
regards jagadish
 
when a cellphone recieve sms it will output audio..(ringtone) maybe u can connect an earphone to ur cellphone and (it will play a tone when recieve sms) connect the audio signals that are passing to earphone speakers to the base of a transistor for amplifying then (some other circuits might be needed) connect its output to a relay which will turn on when recieve an sms or call.. I am sure it will work although i did't try it yet..
 
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