I'm after a bit of guidance on my first Arduino project- I'm pretty comfortable with hardware, but software is a major weakness of mine.
Anyhow, the stated goal of this project is thus; I need to get an indication of temperature from building, get that into a another building, then feed that into an existing data acquisition system. My intent is to use a 433Mhz radio link, possibly a pre-built weather station transmitter, then have an Arduino-enabled receiver which would decode that data, and using some sort of DAC, produce an analogue voltage, which I can then wrangle into the correct range with an op amp if needs be.
So, my fundamental question is;
Is there any established protocol I can "drop in" to my transmitter/receiver structure?