BH1750 Ambient Light Sensor
===========================

.. warning::

    This sensor is experimental has not been fully tested yet as I do not own all sensors. If you
    can verify it works (or if it doesn't), please notify me on discord.

The ``bh1750`` sensor platform allows you to use your BH1750
(`datasheet <http://www.mouser.com/ds/2/348/bh1750fvi-e-186247.pdf>`__, `Aliexpress`_, `mklec`_)
ambient light sensor with esphomelib. The `I²C
bus </esphomeyaml/components/i2c.html>`__ is required to be set up in
your configuration for this sensor to work.

.. figure:: /esphomeyaml/components/sensor/bh1750-full.jpg
   :align: center
   :target: `Aliexpress`_
   :width: 50.0%

   BH1750 Ambient Light Sensor. Images from `Aliexpress`_ and `mklec`_.

.. _Aliexpress: https://www.adafruit.com/product/1603
.. _mklec: http://mklec.com/modules/micro-controller-modules/bh1750-bh1750fvi-digital-light-sensor-module

.. code:: yaml

    # Example configuration entry
    sensor:
      - platform: bh1750
        address: 0x23
        update_interval: 15s

Configuration variables:
~~~~~~~~~~~~~~~~~~~~~~~~

-  **name** (**Required**, string): The name for the sensor.
-  **address** (*Optional*, int): Manually specify the i^2c address of the sensor.
   Defaults to ``0x23`` (address if address pin is pulled low). If the address pin is pulled high,
   the address is ``0x5C``.
-  **resolution** (*Optional*, string): The resolution of the sensor in lx. One of ``4.0``,
   ``1.0``, ``0.5``. Defaults to ``0.5`` (the maximum resolution).
-  **update_interval** (*Optional*, `time </esphomeyaml/configuration-types.html#time>`__): The interval to check the
   sensor. Defaults to ``15s``.
-  **id** (*Optional*, `id </esphomeyaml/configuration-types.html#id>`__): Manually specify the ID used for code
   generation.
-  All other options from
   `Sensor </esphomeyaml/components/sensor/index.html#base-sensor-configuration>`__
   and `MQTT Component </esphomeyaml/components/mqtt.html#mqtt-component-base-configuration>`__.