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83 lines
2.9 KiB
ReStructuredText
83 lines
2.9 KiB
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SCD4X CO₂, Temperature and Relative Humidity Sensor
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===================================================
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.. seo::
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:description: Instructions for setting up SCD4X CO₂ Temperature and Relative Humidity Sensor
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:image: scd4x.jpg
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The ``scd4x`` sensor platform allows you to use your Sensirion SCD4X CO₂
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(`datasheet <https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/9.5_CO2/Sensirion_CO2_Sensors_SCD4x_Datasheet.pdf>`__) sensors with ESPHome.
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The :ref:`I²C Bus <i2c>` is required to be set up in your configuration for this sensor to work.
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.. figure:: images/scd4x.jpg
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:align: center
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:width: 80.0%
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.. code-block:: yaml
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# Example configuration entry
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sensor:
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- platform: scd4x
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co2:
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name: "Workshop CO2"
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temperature:
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name: "Workshop Temperature"
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humidity:
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name: "Workshop Humidity"
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Configuration variables:
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------------------------
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- **co2** (*Optional*): The information for the CO₂ sensor.
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- **name** (**Required**, string): The name for the CO₂eq sensor.
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- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
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- All other options from :ref:`Sensor <config-sensor>`.
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- **temperature** (*Optional*): The information for the Temperature sensor.
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- **name** (**Required**, string): The name for the temperature sensor.
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- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
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- All other options from :ref:`Sensor <config-sensor>`.
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- **humidity** (*Optional*): The information for the Humidity sensor.
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- **name** (**Required**, string): The name for the humidity sensor.
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- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
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- All other options from :ref:`Sensor <config-sensor>`.
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- **temperature_offset** (*Optional*, float): The temperature offset can depend
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on various factors such as the SCD4x measurement mode, self-heating of close
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components, the ambient temperature and air flow. This variable allows the
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compensation of those effects by setting a temperature offset. Defaults to
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``4°C``.
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- **automatic_self_calibration** (*Optional*, bool): Whether to enable
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automatic self calibration (ASC). Defaults to ``true``.
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- **ambient_pressure_compensation** (*Optional*, int): Enable compensation
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of measured CO₂ values based on given ambient pressure in mBar.
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- **altitude_compensation** (*Optional*, int): Enable compensating
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deviations due to current altitude (in metres). Notice: setting
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*altitude_compensation* is ignored if *ambient_pressure_compensation*
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is set.
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- **address** (*Optional*, int): Manually specify the I²C address of the sensor.
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Defaults to ``0x62``.
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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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See Also
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--------
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- :ref:`sensor-filters`
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- :doc:`scd30`
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- :apiref:`scd4x/scd4x.h`
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- :ghedit:`Edit`
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