82 lines
2.7 KiB
ReStructuredText
82 lines
2.7 KiB
ReStructuredText
SMT100 Soil Moisture Sensor
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================================
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.. seo::
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:description: Instructions for setting up SMT100 soil moisture and temperature sensor
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:image: smt100.jpg
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:keywords: smt100
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The SMT100 sensor platform allows you to use the SMT100 soil moisture and temperature with ESPHome.
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.. figure:: images/smt100.jpg
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:align: center
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:width: 50.0%
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The communication with this integration is done over a UART bus using a simple ASCII protocol. 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.
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.. code-block:: yaml
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# Example configuration entry
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uart:
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tx_pin: TX
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rx_pin: RX
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baud_rate: 9600
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sensor:
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- platform: smt100
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counts:
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name: "Counts"
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permittivity:
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name: "Permittivity"
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temperature:
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name: "Temperature"
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moisture:
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name: "Moisture"
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voltage:
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name: "Voltage"
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Configuration variables:
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------------------------
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- **counts** (*Optional*): Raw measurement data from the sensor electronics (dimensionless quantity). Higher counts mean less moisture. May be used for material specific calibrations.
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- **name** (**Required**): Sensor name.
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- All other options from :ref:`Sensor <config-sensor>`.
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- **Permittivity** (*Optional*): Permittivity or dielectric coefficient of the material to be measured (dimensionless quantity. Higher permittivity means higher water content. May be used for material specific calibration.
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- **name** (**Required**): Sensor name.
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- All other options from :ref:`Sensor <config-sensor>`.
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- **temperature** (*Optional*): Soil temperature in degrees Celsius. Please note that the temperature sensor is inside the black sensor enclosure and requires some time to equilibrate with the soil temperature.
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- **name** (**Required**): Sensor name.
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- All other options from :ref:`Sensor <config-sensor>`.
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- **moisture** (*Optional*): Soil moisture (volumetric water content in %).
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- **name** (**Required**): Sensor name.
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- All other options from :ref:`Sensor <config-sensor>`.
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- **voltage** (*Optional*): Supply voltage of the sensor in Volt.
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- **name** (**Required**): Sensor name.
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- All other options from :ref:`Sensor <config-sensor>`.
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- **uart_id** (*Optional*, :ref:`config-id`): Manually specify the ID of the :ref:`UART Component <uart>` if you want
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to use multiple UART buses.
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- **update_interval** (*Optional*, :ref:`config-time`): The interval to pull the sensor. Defaults is 60s.
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See Also
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--------
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- :doc:`/components/sensor/smt100`
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- :ref:`sensor-filters`
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- :apiref:`smt100/smt100.h`
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- :ghedit:`Edit`
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