Dear All,
I am currently looking into a RS 485 communication protocol in order to achive full or half duplex communication over a long cable
(+3000 ft ) between two arduinos .
I guess that for this kind of distance, good old RS232 will be to no avail. Have you heard of a project already using such a system ? (or maybe something better !)
Thanks and good coding to you all !
Nick
Remember that RS-485 is not a protocol, it's an electrical specification.
3000' should be doable at slower speeds, say 100-200kbps, even up to 400kbps.
You wll probably have to design your own protocol, it's details will depend on how robust you need the link to be.
Rob