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44 lines
2.0 KiB
ReStructuredText
MAX44009 Ambient Light Sensor
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=============================
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.. seo::
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:description: Instructions for setting up MAX44009 ambient light sensors in ESPHome.
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:image: max44009.svg
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:keywords: MAX44009
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The ``max44009`` sensor platform allows you to use your MAX44009
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(`datasheet <https://datasheets.maximintegrated.com/en/ds/MAX44009.pdf>`__)
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ambient light sensor with ESPHome. This sensor features an ultra-wide 22-bit dynamic range
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from 0.045 lux to 188,000 lux. The :ref:`I²C bus <i2c>` is required to be set up in your
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configuration for this sensor to work.
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The ``max44009`` sensor can operate in two modes: ``low_power`` (default) and ``continuous``:
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- In ``low_power`` mode, the sensor measures lux intensity only once every 800ms regardless of integration time.
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This mode allows the part to operate at its lowest possible supply current.
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- In ``continuous`` mode, the sensor continuously measures lux intensity. That is, as soon as one reading is finished, a
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new one begins. If integration time is 6.25ms, readings are taken every 6.25ms. If integration time is 800ms,
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readings are taken every 800ms. In this mode, the part consumes slightly higher power than in the ``low_power``
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mode.
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- Additionally mode can be set to ``auto``. In this mode, the mode will be chosen according to the ``update_interval``
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value. If ``update_interval < 800``, ``continuous`` mode will be selected. Otherwise, ``low_power`` mode will be selected.
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Configuration variables:
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------------------------
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- **address** (*Optional*, int): Manually specify the I²C address of the sensor. Defaults to ``0x4A``.
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- **mode** (*Optional*, string): Measurement mode. One of ``auto``, ``low_power``, ``continuous``.
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- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the
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sensor. Defaults to ``60s``.
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- All other options from :ref:`Sensor <config-sensor>`.
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See Also
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--------
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- :ref:`sensor-filters`
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- :doc:`bh1750`
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- `MAX44009 Library <https://github.com/RobTillaart/Max44009>`__ by `@RobTillaart <https://github.com/RobTillaart>`__
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- :ghedit:`Edit`
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