DTMF output

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  1. - 27th February 2008, 21:48 #2
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    Quote Originally Posted by din_kt View Post
    Dear all,
    i want to sending dtmf signal to telephon line to access auto dialing, so can i use pic 16f84 then program using dtmf code (DTMFOUT PORTB.1,[10,0,5,8]), or need using pic 16f887. so how about circuit from pic to telephone line....need to add some component such transformer.
    please help me.........urgent...
    Sounds like a school project...

    Google it! There's load of projects out there for connecting into a telephone circuit...and a LOT of warnings about doing so...

    16F84/16F877? How about the 'A models of each of those? How many other PIC projects have you done so far?
    Last edited by skimask; - 27th February 2008 at 21:56.
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