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81 lines
3.1 KiB
ReStructuredText
SDS011 Particulate Matter Sensor
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================================
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.. seo::
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:description: Instructions for setting up SDS011 Particulate matter sensors
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:image: sds011.jpg
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:keywords: sds011
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The ``sds011`` sensor platform allows you to use SDS011 particulate matter sensors (`datasheet <https://nettigo.pl/attachments/398>`__)
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with ESPHome.
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.. figure:: images/sds011-full.jpg
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:align: center
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:width: 50.0%
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SDS011 Particulate Matter Sensor
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As the communication with the SDS011 is done using UART, you need
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to have an :ref:`UART bus <uart>` in your configuration with the ``rx_pin`` connected to the TX pin of the
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SDS011 and optionally the ``tx_pin`` connected to the RX Pin of the SDS011 (it's switched because the
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TX/RX labels are from the perspective of the individual device). Additionally, you need to set the baud rate 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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rx_pin: D0
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tx_pin: D1
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baud_rate: 9600
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sensor:
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- platform: sds011
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pm_2_5:
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name: "Particulate Matter <2.5µm Concentration"
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pm_10_0:
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name: "Particulate Matter <10.0µm Concentration"
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update_interval: 5min
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With ``update_interval``, the working period of the SDS011 device will be changed. If ``update_interval`` is
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equal to ``0min``, the SDS011 will be set to continuous measurement and will report new measurement values
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approximately every second.
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If ``update_interval`` is between 1-30 minutes, the SDS011 periodically turns on for 30s before each measurement.
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For the remaining time the sensor is shut off. As a result, this mode can reduce power consumption and increases
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the lifetime of the SDS011.
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Note that ``update_interval`` may not be set to ``never``.
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Configuration variables:
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------------------------
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- **pm_2_5** (*Optional*): Use the concentration of particulates of size less than 2.5µm in µg per cubic meter.
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All options from :ref:`Sensor <config-sensor>`.
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- **pm_10_0** (*Optional*): Use the concentration of particulates of size less than 10.0µm in µg per cubic meter.
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All options from :ref:`Sensor <config-sensor>`.
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- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the sensor in minutes.
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This affects the working period of the SDS011 sensor. Defaults to ``0min``.
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- **rx_only** (*Optional*, boolean): Whether the sensor is connected **only by RX pin** to the UART bus.
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Since the SDS011 can not be configured in RX-only mode, ``update_interval`` has no effect and the sensor must be
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configured separately. Defaults to ``false``.
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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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.. note::
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The configuration variable ``update_interval`` reconfigure the SDS011 device. This setting is still effective
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after power off. This can affect the performance of other libraries. Factory default is continuous measurement.
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See Also
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--------
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- :doc:`/components/sensor/pmsx003`
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- :ref:`sensor-filters`
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- `Laser Dust Sensor Control Protocol <https://nettigo.pl/attachments/415>`__
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- :apiref:`sds011/sds011.h`
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- :ghedit:`Edit`
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