solarwind escreveu:
> Hey all!
>
> For my next (simple) project, I'm trying to build a network of PICs
> that will monitor temperature at various places around the house.
>
> The problem: how do I create a network?
>
> One possible solution is to network over wireless, but this is very
> expensive when I have 5 or 6 units to interconnect. Another Idea is
> through the telephone line. How would I modulate signals over the
> telephone line? The aim of the circuit design is that it should be
> simple.
>
> This is the only idea that I can think of that has the potential to be
> inexpensive to make. If you guys have any other ideas, I would also
> appreciate it.
>   =

How about RS-485 ?
Or even half-duplex RS-232 with a diode in each TX output and a
pull-down to V- ?
Or the very inexpensive 433MHz RF modules ?

Regards,
Isaac

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