2023-08-17 22:03:41 +02:00
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PMWCS3 Capacitive Soil Moisture and Temperature Sensor
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======================================================
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.. seo::
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:description: Instructions for setting up PMWCS3 capacitive soil moisture sensor in ESPHome.
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:image: pmwcs3.jpg
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:keywords: PMWCS3
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The ``pmwcs3`` sensor platform allows you to use your PMWCS3
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(`informations <https://tinovi.com/wp-content/uploads/2020/01/PM-WCS-3-I2C.pdf>`__)
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capacitive soil moisture and temperature sensor with ESPHome. The :ref:`I²C bus <i2c>` is required to be set up in
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your configuration for this sensor to work. Wiring scheme: red is 3.3V, black & shield is GND, green is SDA and white is SCL.
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2.2kOhm resistors are advised to pullup both SDA & SDA lines.
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.. figure:: images/pmwcs3.jpg
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:align: center
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:width: 80.0%
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PMWCS3 Capacitive Soil Moisture and Temperature Sensor.
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.. code-block:: yaml
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# Example configuration entry
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sensor:
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- platform: pmwcs3
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e25:
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name: "pmwcs3 e25"
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ec:
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name: "pmwcs3 ec"
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temperature:
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name: "pmwcs3 temperature"
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vwc:
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name: "pmwcs3 vwc"
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Configuration variables:
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------------------------
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- **e25** (*Optional*): Electrical Conductivity, reference at 25°C in dS/m.
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All options from :ref:`Sensor <config-sensor>`.
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- **ec** (*Optional*): Electrical Conductivity in mS/m.
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All options from :ref:`Sensor <config-sensor>`.
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- **temperature** (*Optional*): Soil temperature in °C.
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All options from :ref:`Sensor <config-sensor>`.
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- **vwc** (*Optional*): Volumetric Water Content in cm3cm−3.
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All options from :ref:`Sensor <config-sensor>`.
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- **address** (*Optional*, int): Manually specify the I²C address of the sensor.
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Defaults to ``0x63``.
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- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the
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sensor. Defaults to ``60s``.
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.. _sensor-PMWCS3AirCalibrationAction:
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``pmwcs3.air_calibration`` Action
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-----------------------------------
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The pmwcs3 probe can to be calibrated in dry/air conditions.
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The air calibration is a 30s procedure.
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.. code-block:: yaml
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# Example configuration entry
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sensor:
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- platform: pmwcs3
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id: pmwcs3_id
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# ...
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# in some trigger
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on_...:
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- sensor.pmwcs3_id.air_calibration:
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id: pmwcs3_id
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Configuration option:
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- **id** (**Required**, :ref:`config-id`): The ID of the pmwcs3 sensor.
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.. _sensor-PMWCS3WaterCalibrationAction:
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``pmwcs3.water_calibration`` Action
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-----------------------------------
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The pmwcs3 probe can to be also calibrated in water saturated conditions. Install the probe into a glass of water.
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The water calibration is also a 30s procedure.
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.. code-block:: yaml
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# Example configuration entry
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sensor:
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- platform: pmwcs3
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id: pmwcs3_id
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# ...
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# in some trigger
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on_...:
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- sensor.pmwcs3_id.water_calibration:
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id: pmwcs3_id
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Configuration option:
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- **id** (**Required**, :ref:`config-id`): The ID of the pmwcs3 sensor.
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.. _sensor-PMWCS3NewI2cAddressAction:
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2023-10-11 02:13:24 +02:00
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``pmwcs3.new_i2c_address`` Action
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---------------------------------
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2023-08-17 22:03:41 +02:00
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A new I2C address can be set (for multi-probes cases for example)
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.. code-block:: yaml
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# Example configuration entry
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sensor:
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- platform: pmwcs3
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id: pmwcs3_id
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# ...
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# in some trigger
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on_...:
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2023-10-11 02:13:24 +02:00
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- sensor.pmwcs3_id.new_i2c_address:
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2023-08-17 22:03:41 +02:00
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id: pmwcs3_id
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2023-10-11 02:13:24 +02:00
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address: 0x65
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2023-08-17 22:03:41 +02:00
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Configuration options:
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- **id** (**Required**, :ref:`config-id`): The ID of the pmwcs3 sensor.
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2023-10-11 02:13:24 +02:00
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- **address** (**Required**, int): New I2C address.
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2023-08-17 22:03:41 +02:00
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See Also
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--------
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- :ref:`sensor-filters`
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- :apiref:`pmwcs3/pmwcs3.h`
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- `Temperature Compensation for Conductivity <https://www.aqion.de/site/112>`__
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- `PMWCS3 Library <https://github.com/tinovi/i2cArduino>`__ by `@tinovi <https://github.com/tinovi>`__
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- :ghedit:`Edit`
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