mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-09-27 04:13:07 +02:00
82 lines
3.0 KiB
ReStructuredText
82 lines
3.0 KiB
ReStructuredText
SHT3X-D Temperature+Humidity Sensor
|
|
===================================
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up SHT31-D/SHT3x and SHT85 temperature and humidity sensors
|
|
:image: sht3xd.jpg
|
|
|
|
The ``sht3xd`` sensor platform Temperature+Humidity sensor allows you to use your Sensirion SHT31-D/SHT3x
|
|
(`datasheet <https://cdn-shop.adafruit.com/product-files/2857/Sensirion_Humidity_SHT3x_Datasheet_digital-767294.pdf>`__,
|
|
`Adafruit`_ ) and SHT85 (`datasheet <https://sensirion.com/media/documents/4B40CEF3/640B2346/Sensirion_Humidity_Sensors_SHT85_Datasheet.pdf>`__,
|
|
`Sensirion`_ ) sensors with Esphome.
|
|
The :ref:`I²C Bus <i2c>` is required to be set up in your configuration for this sensor to work.
|
|
|
|
.. _Adafruit: https://www.adafruit.com/product/2857
|
|
.. _Sensirion: https://sensirion.com/products/catalog/SHT85/
|
|
|
|
.. figure:: images/temperature-humidity.png
|
|
:align: center
|
|
:width: 80.0%
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
sensor:
|
|
- platform: sht3xd
|
|
temperature:
|
|
name: "Living Room Temperature"
|
|
humidity:
|
|
name: "Living Room Humidity"
|
|
address: 0x44
|
|
update_interval: 60s
|
|
|
|
Configuration variables:
|
|
------------------------
|
|
|
|
- **temperature** (*Optional*): The information for the temperature sensor.
|
|
|
|
- All options from :ref:`Sensor <config-sensor>`.
|
|
|
|
- **humidity** (*Optional*): The information for the humidity sensor.
|
|
|
|
- All options from :ref:`Sensor <config-sensor>`.
|
|
|
|
- **address** (*Optional*, int): Manually specify the I²C address of the sensor.
|
|
Defaults to ``0x44``. For SHT3x, an alternate address can be ``0x45`` while SHT85 supports only address ``0x44``
|
|
- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the
|
|
sensor. Defaults to ``60s``.
|
|
- **heater_enabled** (*Optional*, bool): Turn on/off heater at boot.
|
|
This may help provide `more accurate readings in condensing conditions <https://forum.arduino.cc/t/atmospheric-sensors-in-condensing-conditions/412167>`_,
|
|
but can also increase temperature readings and decrease humidity readings as a side effect.
|
|
Defaults to ``false``.
|
|
|
|
I²C Configuration when using Higher I²C Frequencies
|
|
---------------------------------------------------
|
|
|
|
When using the **IDF framework** and **I²C frequencies greater than 50-100kHz**, the I²C configuration needs to include a **timeout** option.
|
|
On an ESP32, the Arduino framework has a default I²C timeout of 50ms whereas on IDF framework, the default timeout is 100us.
|
|
At these higher I²C frequencies, the default I²C timeout on IDF framework causes a "Communication with SHT3xD failed" error on setup.
|
|
A solution that has been tested on ESP32 at 800kHz, is to increase the I²C timeout to 10ms as per the following example.
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example I²C configuration
|
|
i2c:
|
|
sda: 21
|
|
scl: 22
|
|
scan: true
|
|
frequency: 800khz
|
|
timeout: 10ms
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :ref:`sensor-filters`
|
|
- :doc:`absolute_humidity`
|
|
- :doc:`dht`
|
|
- :doc:`dht12`
|
|
- :doc:`hdc1080`
|
|
- :doc:`htu21d`
|
|
- :apiref:`sht3xd/sht3xd.h`
|
|
- :ghedit:`Edit`
|