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 ...

Quote:

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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 ...

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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

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.