esphome-docs/components/sensor/scd30.rst

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SCD30 CO₂, Temperature and Relative Humidity Sensor
===================================================
.. seo::
:description: Instructions for setting up SCD30 CO₂ Temperature and Relative Humidity Sensor
:image: scd30.jpg
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The ``scd30`` sensor platform allows you to use your Sensirion SCD30 CO₂
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(`datasheet <https://sensirion.com/media/documents/4EAF6AF8/61652C3C/Sensirion_CO2_Sensors_SCD30_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/scd30.jpg
:align: center
:width: 80.0%
.. code-block:: yaml
# Example configuration entry
sensor:
- platform: scd30
co2:
name: "Workshop CO2"
accuracy_decimals: 1
temperature:
name: "Workshop Temperature"
accuracy_decimals: 2
humidity:
name: "Workshop Humidity"
accuracy_decimals: 1
temperature_offset: 1.5 °C
address: 0x61
update_interval: 5s
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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): Temperature and humidity
offsets may occur when operating the sensor in end-customer
devices. This variable allows the compensation of those effects by
setting a temperature offset.
- **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 ``0x61``.
- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the
sensor. Defaults to ``60s``.
Manual calibration:
------------------------
.. code-block:: yaml
# Example on how to implement a UI section in HA for manual calibration.
# Note: Please enter first a CO2 value before pressing the button.
button:
- platform: template
name: "SCD30 Force manual calibration"
entity_category: "config"
on_press:
then:
- scd30.force_recalibration_with_reference:
value: !lambda 'return id(co2_cal).state;'
number:
- platform: template
name: "CO2 calibration value"
optimistic: true
min_value: 350
max_value: 4500
step: 1
id: co2_cal
icon: "mdi:molecule-co2"
entity_category: "config"
See Also
--------
- :ref:`sensor-filters`
- :doc:`absolute_humidity`
- :doc:`dht`
- :doc:`dht12`
- :doc:`hdc1080`
- :doc:`htu21d`
- :apiref:`scd30/scd30.h`
- :ghedit:`Edit`