Modbus communication SDM72 energy meter

ESPHome
22

Try TX to TX and RX to RX on the ESP/RS485-module connection

And TRY USING SOFTWARE UART! As JFK344 did, that finally fixed it for me:

uart:
  id: mod_uart
  tx_pin: D2 #this line
  rx_pin: D1 #and this one, use these pins (others could work, but these are fine)
  baud_rate: 9600
  stop_bits: 1
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