Hi I want to try mimicking rs485 communication with arduino. We want to test before purchasing a rs485 temp hum device at make sure this will works. Currently I use nano as replacement for sensor and esp32 as gateway, the esp32 later will use mqtt to report to server. I cannot get pass the rs485 c…

Rs485 communication between arduino

wpsd2006 July 28, 2025, 2:13am 8

my mistake the draw is not sync with the connection. fix now using 3,4 as RX,TX
The GND now is star connection for nano and esp32, except for max485 is still chain together

Error is still 226

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Rs485 communication between arduino

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