.. _theCore_HTU21D:

HTU21D humidity and temperature sensor
--------------------------------------

.. image:: https://s3-ap-southeast-1.amazonaws.com/a2.datacaciques.com/16/09/13/73w9keijt2gvm68c/20dbf19893bf73b1.jpg
  :alt: HTU21D humidity and temperature sensor module
  :width: 700

The HTU21D is a low-cost and highly accurate digital humidity and temperature sensor.
It can be shipped within different boards, like shown in the picture above.

Datasheet
~~~~~~~~~

Datasheet v524 can be found at `Sparkfun CDN`_

Source code
~~~~~~~~~~~

HTU21D driver implementation is located under ``dev/sensor/htu21d`` directory,
relative to theCore root.

Driver documentation
~~~~~~~~~~~~~~~~~~~~

:doxy_url:`Click here to open HTU21D Doxygen docs<group__htu21d.html>`.

HTU21D usage example
~~~~~~~~~~~~~~~~~~~~

Refer to :ref:`theCore_htu21d_example` page for usage example.

.. _`Sparkfun CDN`: https://cdn.sparkfun.com/assets/b/1/b/8/5/Si7021-A20.pdf