Add documentation for SHTCx Temperature sensors (#305)

* Add documentation for STS3x Temperature sensors

* Updated formatting

* Updated index and other temperature sensors with link to STS3x sensor

* Added STS31 sensor photo

* Add documentation for SHTCx Temperature sensors

* Fixed reference to a sensor thumbnail

* Cleaned up changes leaked from STS3x feature

* Remove references on other pages

It's already getting too cluttered...

* Remove references


Co-authored-by: Otto Winter <otto@otto-winter.com>

components/sensor/shtcx.rst

@@ -0,0 +1,65 @@
+SHTCx Temperature+Humidity Sensors
+==================================
+
+.. seo::
+    :description: Instructions for setting up SHTC1 and SHTC3 temperature and humidity sensors
+    :image: shtc3.jpg
+
+The ``shtcx`` sensor platform Temperature+Humidity sensor allows you to use your Sensiron SHTC1
+(`datasheet <https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/0_Datasheets/Humidity/Sensirion_Humidity_Sensors_SHTC1_Datasheet.pdf>`__,
+`Sensirion STHC1 <https://www.sensirion.com/en/environmental-sensors/humidity-sensors/digital-humidity-sensor-for-consumer-electronics-and-iot/>`__) and
+the newer SHTC3
+(`datasheet <https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/0_Datasheets/Humidity/Sensirion_Humidity_Sensors_SHTC3_Datasheet.pdf>`__,
+`Sparkfun`_ ) sensors with
+ESPHome. The :ref:`I²C Bus <i2c>` is
+required to be set up in your configuration for this sensor to work.
+
+.. _Sparkfun: https://www.sparkfun.com/products/15074
+
+.. figure:: images/temperature-humidity.png
+    :align: center
+    :width: 80.0%
+
+.. code-block:: yaml
+
+    # Example configuration entry
+    sensor:
+      - platform: shtcx
+        temperature:
+          name: "Living Room Temperature"
+        humidity:
+          name: "Living Room Humidity"
+        address: 0x70
+        update_interval: 60s
+
+Configuration variables:
+------------------------
+
+- **temperature** (**Required**): 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** (**Required**): 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>`.
+
+- **address** (*Optional*, int): Manually specify the i^2c address of the sensor.
+  Defaults to ``0x70``.
+- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the
+  sensor. Defaults to ``60s``.
+
+See Also
+--------
+
+- :ref:`sensor-filters`
+- :doc:`dht`
+- :doc:`dht12`
+- :doc:`hdc1080`
+- :doc:`htu21d`
+- :doc:`sht3xd`
+- :apiref:`shtcx/shtcx.h`
+- :ghedit:`Edit`

index.rst

@@ -132,6 +132,7 @@ Sensor Components
     SenseAir, components/sensor/senseair, senseair_s8.jpg
     SDS011 Sensor, components/sensor/sds011, sds011.jpg
     SCD30, components/sensor/scd30, scd30.jpg
+    SHTCx, components/sensor/shtcx, shtc3.jpg
     SHT3X-D, components/sensor/sht3xd, sht3xd.jpg
     SGP30, components/sensor/sgp30, sgp30.jpg
     TCS34725, components/sensor/tcs34725, tcs34725.jpg