esphome-docs/components/sensor/scd4x.rst

83 lines
2.9 KiB
ReStructuredText
Raw Normal View History

SCD4X CO₂, Temperature and Relative Humidity Sensor
===================================================
.. seo::
:description: Instructions for setting up SCD4X CO₂ Temperature and Relative Humidity Sensor
:image: scd4x.jpg
The ``scd4x`` sensor platform allows you to use your Sensirion SCD4X CO₂
(`datasheet <https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/9.5_CO2/Sensirion_CO2_Sensors_SCD4x_Datasheet.pdf>`__) sensors with ESPHome.
The :ref:`I²C Bus <i2c>` is required to be set up in your configuration for this sensor to work.
.. figure:: images/scd4x.jpg
:align: center
:width: 80.0%
.. code-block:: yaml
# Example configuration entry
sensor:
- platform: scd4x
co2:
name: "Workshop CO2"
temperature:
name: "Workshop Temperature"
humidity:
name: "Workshop Humidity"
Configuration variables:
------------------------
- **co2** (*Optional*): The information for the CO₂ sensor.
- **name** (**Required**, string): The name for the CO₂eq sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **temperature** (*Optional*): The information for the Temperature sensor.
- **name** (**Required**, string): The name for the temperature sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **humidity** (*Optional*): The information for the Humidity sensor.
- **name** (**Required**, string): The name for the humidity sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **temperature_offset** (*Optional*, float): The temperature offset can depend
on various factors such as the SCD4x measurement mode, self-heating of close
components, the ambient temperature and air flow. This variable allows the
compensation of those effects by setting a temperature offset. Defaults to
``4°C``.
- **automatic_self_calibration** (*Optional*, boolean): Whether to enable
automatic self calibration (ASC). Defaults to ``true``.
- **ambient_pressure_compensation** (*Optional*, int): Enable compensation
of measured CO₂ values based on given ambient pressure in mBar.
- **altitude_compensation** (*Optional*, int): Enable compensating
deviations due to current altitude (in metres). Notice: setting
*altitude_compensation* is ignored if *ambient_pressure_compensation*
is set.
- **address** (*Optional*, int): Manually specify the I²C address of the sensor.
Defaults to ``0x62``.
- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the
sensor. Defaults to ``60s``.
See Also
--------
- :ref:`sensor-filters`
- :doc:`scd30`
- :apiref:`scd4x/scd4x.h`
- :ghedit:`Edit`