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Add note about RS485 converter (#1372)

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Jesse Hills 2021-08-10 23:36:54 +12:00 committed by GitHub
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components/sensor/sdm_meter.rst
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@ -16,7 +16,8 @@ with ESPHome.
SDM220M Energy Monitor. SDM220M Energy Monitor.
The communication with this integration is done over a :ref:`UART bus <uart>` using :ref:`Modbus <modbus>`. The communication with this integration is done over a :ref:`UART bus <uart>` using the :ref:`Modbus protocol <modbus>`
over RS485 wiring. You will need an RS485 to UART converter for communication.
You must therefore have a ``uart:`` entry in your configuration with both the TX and RX pins set You must therefore have a ``uart:`` entry in your configuration with both the TX and RX pins set
to some pins on your board and the baud rate set to 9600. to some pins on your board and the baud rate set to 9600.