97 lines
3.8 KiB
ReStructuredText
97 lines
3.8 KiB
ReStructuredText
RGBW Light
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==========
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.. seo::
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:description: Instructions for setting up RGB + White-Channel lights.
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:image: rgbw.png
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The ``rgbw`` light platform creates an RGBW light from 4 :ref:`float output components <output>` (one for each channel).
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.. code-block:: yaml
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# Example configuration entry
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light:
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- platform: rgbw
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name: "Livingroom Lights"
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red: output_component1
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green: output_component2
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blue: output_component3
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white: output_component4
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Color Correction
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----------------
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It is often favourable to calibrate/correct the color produced by an LED strip light as the
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perceived intensity of different colors will generally vary. This can be done by using
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:ref:`max_power <config-output>` on individual output channels:
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.. code-block:: yaml
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# Example configuration entry
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light:
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- platform: rgbw
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name: "Livingroom Lights"
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red: output_component1
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green: output_component2
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blue: output_component3
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white: output_component4
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# Example output entry
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output:
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- platform: ...
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id: output_component1
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max_power: 80%
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.. note::
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Remember that ``gamma_correct`` is enabled by default (``γ=2.8``), and you may want take it into account for the calibration. For instance if you command a light to *50%* brightness and want it to be the new maximum: ``max_PWM_power = max_light_power^2.8 = 0.5^2.8 = 0.144``, then you would set ``max_power`` to *14.4%*.
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.. _rgbw_color_interlock:
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Color Interlock
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---------------
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With some LED bulbs, it is not possible to enable the RGB leds at the same time as the white leds, or setting
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the RGB channels to maximum whilst wanting a white light will have an undesired hue effect. For these cases a
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configuration variable is available that prevents the RGB leds and white leds from being turned on at the same
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time: ``color_interlock``.
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Setting this option to ``true`` will result in the light having two color modes available, ``RGB`` and ``WHITE``.
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When the ``RGB`` color mode is active, the white leds are turned off, and when the ``WHITE`` color mode is active,
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the RGB leds are turned off. Switching between these modes can be done from the Home Assistant interface, or by using
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the ``color_mode`` option of the :ref:`light control actions <light-turn_on_action>`.
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Configuration variables:
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------------------------
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- **name** (**Required**, string): The name of the light.
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- **red** (**Required**, :ref:`config-id`): The id of the float :ref:`output` to use for the red channel.
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- **green** (**Required**, :ref:`config-id`): The id of the float :ref:`output` to use for the green channel.
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- **blue** (**Required**, :ref:`config-id`): The id of the float :ref:`output` to use for the blue channel.
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- **white** (**Required**, :ref:`config-id`): The id of the float :ref:`output` to use for the white channel.
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- **effects** (*Optional*, list): A list of :ref:`light effects <light-effects>` to use for this light.
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- **color_interlock** (*Optional*, boolean): When enabled, this will prevent white leds being on at the same
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time as RGB leds. See :ref:`rgbw_color_interlock` for more information. Defaults to ``false``.
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- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
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- All other options from :ref:`Light <config-light>`.
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See Also
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--------
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- :doc:`/components/output/index`
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- :doc:`/components/light/index`
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- :doc:`/components/light/cwww`
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- :doc:`/components/light/color_temperature`
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- :doc:`/components/light/rgb`
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- :doc:`/components/light/rgbww`
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- :doc:`/components/light/rgbct`
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- :doc:`/components/power_supply`
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- :doc:`/components/output/ledc`
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- :doc:`/components/output/esp8266_pwm`
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- :doc:`/components/output/pca9685`
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- :doc:`/components/output/tlc59208f`
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- :doc:`/components/output/my9231`
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- :doc:`/components/output/sm16716`
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- :apiref:`rgbw/rgb_light_output.h`
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- :ghedit:`Edit`
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