mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-12-26 17:27:47 +01:00
89 lines
3.4 KiB
ReStructuredText
89 lines
3.4 KiB
ReStructuredText
DHT Temperature+Humidity Sensor
|
|
===============================
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up DHT11 and DHT22 temperature and humidity sensors.
|
|
:image: dht.jpg
|
|
:keywords: DHT11, DHT22, AM2302, RHT03, SI7021
|
|
|
|
The DHT Temperature+Humidity sensor allows you to use your DHT11
|
|
(`datasheet <https://akizukidenshi.com/download/ds/aosong/DHT11.pdf>`__,
|
|
`Adafruit <https://www.adafruit.com/product/386>`__), DHT22
|
|
(`datasheet <https://www.sparkfun.com/datasheets/Sensors/Temperature/DHT22.pdf>`__,
|
|
`Adafruit <https://www.adafruit.com/product/385>`__), AM2302
|
|
(`datasheet <https://cdn-shop.adafruit.com/datasheets/Digital+humidity+and+temperature+sensor+AM2302.pdf>`__,
|
|
`Adafruit <https://www.adafruit.com/product/393>`__), RHT03
|
|
(`datasheet <https://cdn.sparkfun.com/datasheets/Sensors/Weather/RHT03.pdf>`__,
|
|
`SparkFun <https://cdn.sparkfun.com/datasheets/Sensors/Weather/RHT03.pdf>`__) and SI7021 (one wire Sonoff version)
|
|
(`datasheet <https://cdn.sparkfun.com/assets/b/1/b/8/5/Si7021-A20.pdf>`__,
|
|
`SparkFun <https://cdn.sparkfun.com/assets/b/1/b/8/5/Si7021-A20.pdf>`__)
|
|
sensors with ESPHome.
|
|
|
|
.. figure:: images/dht-full.jpg
|
|
:align: center
|
|
:width: 50.0%
|
|
|
|
DHT22 Temperature & Humidity Sensor.
|
|
|
|
.. _Adafruit: https://www.adafruit.com/product/385
|
|
|
|
The DHT22 and DHT11 require external pull up resistors on the data line. To do this, solder
|
|
a resistor with *about* 4.7kΩ (anything in the range from 1kΩ to 10kΩ probably works fine, but
|
|
if you're having issues try the 4.7kΩ recommended by the manufacturer) between ``DATA`` and ``3.3V``.
|
|
|
|
.. figure:: images/temperature-humidity.png
|
|
:align: center
|
|
:width: 80.0%
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
sensor:
|
|
- platform: dht
|
|
pin: D2
|
|
temperature:
|
|
name: "Living Room Temperature"
|
|
humidity:
|
|
name: "Living Room Humidity"
|
|
update_interval: 60s
|
|
|
|
Configuration variables:
|
|
------------------------
|
|
|
|
- **pin** (**Required**, :ref:`config-pin`): The pin where the DHT bus is connected.
|
|
- **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>`.
|
|
|
|
- **model** (*Optional*, int): Manually specify the DHT model, can be
|
|
one of ``AUTO_DETECT``, ``DHT11``, ``DHT22``, ``DHT22_TYPE2``, ``AM2302``, ``RHT03``, ``SI7021``
|
|
and helps with some connection issues. Defaults to ``AUTO_DETECT``. Auto detection doesn't work for the SI7021 chip.
|
|
- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the
|
|
sensor. Defaults to ``60s``.
|
|
|
|
.. note::
|
|
|
|
If you're seeing lots of invalid temperature/humidity warnings in the logs, try manually setting the
|
|
DHT model with the ``model:`` configuration variable. Other problems could be wrong pull-up resistor values
|
|
on the DATA pin or too long cables.
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :ref:`sensor-filters`
|
|
- :doc:`dht12`
|
|
- :doc:`hdc1080`
|
|
- :doc:`htu21d`
|
|
- :doc:`sht3xd`
|
|
- :apiref:`dht/dht.h`
|
|
- `Arduino DHTLib <https://playground.arduino.cc/Main/DHTLib>`__
|
|
- :ghedit:`Edit`
|