Discussion in "Project Help" started by    suriadin    Apr 26, 2007.
Thu Apr 26 2007, 07:32 AM
#1
hello...........
i'm student last year now i'm doing my thesis. i need some help about how to connect my cell phone to microcontroller exactly interface handphone to microcontroller. please help me........
and if you know about schecmatic of interface please tell to me. thanks
Tags interfacehandphonemicrocontrollerat89c51cell phone
Thu Apr 26 2007, 09:38 PM
#2
take a look at this schematic, I used this to connect a mobile headset's speaker o/p to the controller.
adjust POT to get a nominal current value.

I used this configuration for DTMF reception. I dont know for what purpose you need it.
Tags mobile headsetnominal currentdtmfcurrent valuei dont know

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