Arduino Forum

Using Arduino => Networking, Protocols, and Devices => Topic started by: Se7S_92 on Oct 07, 2018, 11:48 pm

Title: 200 m Wire communication
Post by: Se7S_92 on Oct 07, 2018, 11:48 pm
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.
Title: Re: 200 m Wire communication
Post by: jremington on Oct 08, 2018, 12:23 am
Use standard serial, and on each end use RS422 adapters (for full duplex) or one RS485 adapter (https://www.sparkfun.com/products/10124) (for half duplex), with twisted wire cable.

Good for up to 1000 m at low baud rates.
Title: Re: 200 m Wire communication
Post by: Se7S_92 on Oct 10, 2018, 11:01 pm
thanks a lot, it worked fine using RS422 adapters