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Topic: RS 485 with Arduinos (Read 618 times) previous topic - next topic


       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 !




Jun 21, 2012, 04:35 pm Last Edit: Jun 21, 2012, 04:40 pm by Graynomad Reason: 1
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 Gray aka the GRAYnomad www.robgray.com

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