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Why cant you use a chip like MT8870 with PIC 16F877?
happy to hear dat u succeded with the MT8870 coz so far i i'm gettin nothing! can u please send me some circuit diagram? all i want is to hook a nokia 3310 to the chip, and control some devices (on-off). if u hav any other suggestion please let me know. thnxI have done many projects using tone decoders all are successful.
Without a special decoder PIC could do the job but it needs bigger code to work out.If you can write a code then ok.That mneary's search link has one like that.