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You are here: Home / Topics / Interfacing GSM modem with 80s52

Interfacing GSM modem with 80s52

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Microcontroller › 8051 › Interfacing GSM modem with 80s52

  • This topic has 1 reply, 2 voices, and was last updated 12 years, 1 month ago by RUBEN KURIAKOSE.
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  • March 7, 2013 at 9:56 am #2168
    prajwal
    Participant

    hi,

    I have a gsm modem named WISMO.

    I tested the modem with PC and its working fine. When i tested with PC I DID NOT USE

    MAX 232. Now i need to interface it to the controller should i use max232??

    Pls help

    April 13, 2013 at 10:33 am #9483
    RUBEN KURIAKOSE
    Participant

    when ever you are trying to interface a TTL device with a CMOS use aMAX 232 between them since there requires a voltage change over.

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