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  1. #1
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    Interfacing gsm module with pic via mikroc pro

    Hello, I have been trying to send sms via PIC but i have not been able to do just that. I simulated it in proteus to see if the PIC16F887 was actually transmitting and it worked out just fine. I used voltage divider circuit to step down the output voltage of the Tx of the PIC to the Rx of the module but still didn't work. I tried three diodes in series but did't work as well. Do i have to MAX232 or there is another alternative?Click image for larger version. 

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    There is nothing wrong with the codes right?

    •   Alt15th February 2018, 01:40

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  2. #2
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    Re: Interfacing gsm module with pic via mikroc pro

    Hi,

    The shown circuit is useless, because it doesn't show the problem/circuit you describe.

    It should be no problem with your simulation tool to follow the signal step by step and verify the voltage levels.
    And there will be a lot of correctly working code in the internet.

    Klaus
    Please don´t contact me via PM, because there is no time to respond to them. Thank you.



    •   Alt15th February 2018, 07:43

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  3. #3
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    Re: Interfacing gsm module with pic via mikroc pro

    I didn't show the circuit. The circuit you see was just to simulate the codes to see if the microcontroller was actually transmitting. I connected three diodes in a forward biased direction from the microcontroller Tx to the GSM's Rx so as to step down the voltage level



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