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Author Topic: RS 485 with Arduinos  (Read 340 times)
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       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

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http://www.gammon.com.au/forum/?id=11428
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nr Bundaberg, Australia
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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.

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Rob
« Last Edit: June 21, 2012, 09:40:56 am by Graynomad » Logged

Rob Gray aka the GRAYnomad www.robgray.com

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