Baby Monitor


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  1. #1
    inoonan's Avatar
    inoonan Guest

    Exclamation Baby Monitor

    Hey ...

    I am trying to build a baby monitor and need to transmit voice from pic to pic (PIC16F84A). Does anyone know how I can get this to work. Basically a transmission from a pic with an electret-microphone to a pic with an amp and speaker.

    I have the Parallax 433 MHz RF modules (transmit and receive). These modules transmit via serial communication using a data pin.

    http://www.parallax.com/html_pages/p...rf_modules.asp

    Any ideas would be greatly appreciated ...

  2. #2
    Join Date
    Sep 2003
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    Quote Originally Posted by inoonan
    Hey ...

    I am trying to build a baby monitor and need to transmit voice from pic to pic (PIC16F84A). Does anyone know how I can get this to work. Basically a transmission from a pic with an electret-microphone to a pic with an amp and speaker.

    I have the Parallax 433 MHz RF modules (transmit and receive). These modules transmit via serial communication using a data pin.

    http://www.parallax.com/html_pages/p...rf_modules.asp

    Any ideas would be greatly appreciated ...
    The data rate required to transmit voice over a digital link is pretty high. You are better with an analog voice transmitter. Some of the RF modules out there such as Linx have voice capabilities.
    Ron

  3. #3
    Join Date
    Jun 2005
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    This idea is similar to VOIP. With VOIP you need a broadband connection to make it work. Transmitting voice over data lines requires a lot of bandwidth. Even with a "huge pipe" compression needs to occur to shrink it to "fit." The RF module you have is really for low speed data transfer. Sorry.

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