> >I am keen on I2c and maybe CAN, and I like the IP idea, but as pointed
> >out, expense in doing so.
>
> I am not very familiar with I2C for this kind of application. I believe
> it was designed for connecting chips within a product. I am skeptical of
> how well it could handle the noise you might pick up if you wired
> it around
> the house.

        I'd agree with you on a commercial application, however for a "do it
yourselfer" I2C is a very attractive solution. I use I2C on my house monitor
network and about the only thing I had to do to make it reliable was reduce
the speed of the bus, it runs pretty slow (around 20kHz) but is very
reliable. Make run length is probably around 50 feet, in a star config
though. TTYL

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