Connecting Arduino to MESA 7i95T through serial

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18 Feb 2026 15:44 #343150 by Ameone
Hi all,
Hope you are doing well! I'm trying to implement a status bar using a LED strip (WS2813 RGB LED - Grove) and an Arduino (uno or nano). I wanted to connect the arduino through serial communication directly to the a MESA 7i95T board, to send some string commands to the Arduino to control the LED strip behaviour.

Is it possible to do so? Can I just connect the Arduino to one of the two RS422/485 interfaces of the board? Do I need a specific firmware for the board? In case yes, my setup also includes a MESA 7i87 for reading some sensors.

Thanks,
Best,

Amedeo

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18 Feb 2026 17:30 #343155 by meister
You can use smart serial, there are open source project on github

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19 Feb 2026 07:25 #343184 by Ameone
Great thanks! can you please point out to the correct github? I found this but I don't know if it is what you intended:

github.com/fdarling/mesa-smartserial-device-template

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19 Feb 2026 07:32 #343185 by meister
yes, i used this 'mesa-smartserial-device-template'
to build my relay card:
github.com/multigcs/SmartSerial-ESP32RelayX8Board

but you need an esp32 or something faster than an uno/nano, because the higher serial baud-rates

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