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Topic: 200 m Wire communication  (Read 254 times) previous topic - next topic


I am looking for the best way to wire communicate between two Arduino boards for 200 m .... I was searching about serial communication protocols "USART, SPI, I2C" and all what i found that i can't reach that distance using them.
I am looking for baud rate about 4800 any thing around that will be good.
thanks in advance.


Oct 08, 2018, 12:23 am Last Edit: Oct 08, 2018, 12:28 am by jremington
Use standard serial, and on each end use RS422 adapters (for full duplex) or one RS485 adapter (for half duplex), with twisted wire cable.

Good for up to 1000 m at low baud rates.


thanks a lot, it worked fine using RS422 adapters

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