Baby Monitor

[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 ...

[Ron Marcus]

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

[DynamoBen]

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.