Pic to GSM Phone connection (HSerin problems)

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  1. - 17th October 2005, 22:46 #11
    Rufinus's Avatar
    Rufinus
    Rufinus is offline Junior Member
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    RS232 output of max i do connect to the pic, but through 22k resistor.
    Pic to phone both ways goes through 1k resistor.
    There is no reason to connect rs232 straight to phone anyways, so i dont and would not. There is no problem now with the phone receiving commands. The problem is to receive answers on pic.

    Regarding modes - tried both true and inverted, tried different baud rates.

    Now it is connected to the pic without MAX. I still think it is the problem of levels.

    If you have a good link in mind about serial communication, i would appreciate. Otherwise, gonna google.

    Thanks for adwise anyways.
    Last edited by Rufinus; - 17th October 2005 at 22:50.
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