Docs - new sensor Panasonic GCJA5 (#3011)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

components/sensor/gcja5.rst

@@ -0,0 +1,51 @@
+Panasonic SN-GCJA5 Particulate Matter Sensor
+============================================
+
+.. seo::
+    :description: Instructions for setting up Panasonic SN-GCJA5 Particulate matter sensors
+    :image: gcja5.svg
+
+The ``gcja5`` sensor platform allows you to use your Panasonic SN-GCJA5 laser based particulate matter sensor
+(`datasheet <https://na.industrial.panasonic.com/products/sensors/air-quality-gas-flow-sensors/lineup/laser-type-pm-sensor/series/123557/model/123559>`__)
+sensors with ESPHome.
+
+As the communication with the GCJA5 is done using UART, you need
+to have an :ref:`UART bus <uart>` in your configuration with the ``rx_pin`` connected to the SEND/TX. Additionally, you need to set the baud rate to 9600, and you
+MUST have `EVEN`` parity.
+
+The sensor itself will push values every second. You may wish to :ref:`filter <sensor-filters>` this value to reduce the amount of data you are ingesting.
+The sensor will internally track changes to the Laser Diode and Photo Diode over time to adjust and ensure accuracy.
+Based on continous runtime, the sensor is rated to last at least 5 years.
+
+.. code-block:: yaml
+
+    # Example configuration entry
+
+    sensor:
+      - platform: gcja5
+        pm_1_0:
+          name: "Particulate Matter <1.0µm Concentration"
+        pm_2_5:
+          name: "Particulate Matter <2.5µm Concentration"
+        pm_10_0:
+          name: "Particulate Matter <10.0µm Concentration"
+
+Configuration variables:
+------------------------
+
+- **pm_1_0_std** (*Optional*): Use the concentration of particulates of size less than 1.0µm in µg per cubic meter at standard particle.
+  All options from :ref:`Sensor <config-sensor>`.
+- **pm_2_5_std** (*Optional*): Use the concentration of particulates of size less than 2.5µm in µg per cubic meter at standard particle.
+  All options from :ref:`Sensor <config-sensor>`.
+- **pm_10_0_std** (*Optional*): Use the concentration of particulates of size less than 10.0µm in µg per cubic meter at standard particle.
+  All options from :ref:`Sensor <config-sensor>`.
+- **pm_1_0** (*Optional*): Use the concentration of particulates of size less than 1.0µm in µg per cubic meter under atmospheric environment.
+
+
+See Also
+--------
+
+- :doc:`/components/sensor/gcja5`
+- :ref:`sensor-filters`
+- :apiref:`gcja5/gcja5.h`
+- :ghedit:`Edit`

images/gcja5.svg

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index.rst

@@ -174,6 +174,7 @@ Air Quality
     AirThings BLE, components/sensor/airthings_ble, airthings_logo.png, Radon, CO2, Volatile organics
     CCS811, components/sensor/ccs811, ccs811.jpg, CO2 & Volatile organics
     EE895, components/sensor/ee895, EE895.png,  CO2 & Temperature & Pressure
+    GCJA5, components/sensor/gcja5, gcja5.svg, Particulate
     HM3301, components/sensor/hm3301, hm3301.jpg, Particulate
     MH-Z19, components/sensor/mhz19, mhz19.jpg, CO2 & Temperature
     MiCS-4514, components/sensor/mics_4514, mics_4514.jpg, Gas concentration