AVR-Chat

At 05:12 AM 2/02/2005, you wrote:

>As I see it, I'll have to bury two cables along the track, one for power, and
>one for the RS-485 signal bus (either 2-wire or 4-wire with signal ground to
>control common-mode voltage differences).


Can you use the tracks as a ground wire ...just like the real thing?
You will need to make sure there is continuity, but with the size
of the tracks you should get low voltage drop on the common, so your
power wires can just be used for positive/active.

I would be inclined to use AC or you may end up with oxidation.



Regards

John Samperi

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