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76 lines
2.6 KiB
ReStructuredText
76 lines
2.6 KiB
ReStructuredText
Power Supply Component
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======================
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.. seo::
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:description: Instructions for setting up power supplies which will automatically turn on together with outputs.
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:image: power.svg
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:keywords: power, ATX
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The ``power_supply`` component allows you to have a high power mode for
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certain outputs. For example, if you’re using an `ATX power
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supply <https://en.wikipedia.org/wiki/ATX>`__ to power your LED strips,
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you usually don’t want to have the power supply on all the time while
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the output is not on. The power supply component can be attached to any
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:ref:`Output Component <output>` and
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will automatically switch on if any of the outputs are on. Furthermore,
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it also has a cooldown time that keeps the power supply on for a while
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after the last output has been disabled.
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.. code:: yaml
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# Example configuration entry
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power_supply:
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- id: 'power_supply1'
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pin: 13
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Configuration variables:
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------------------------
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- **id** (**Required**, :ref:`config-id`): The id of the
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power supply so that it can be used by the outputs.
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- **pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The
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GPIO pin to control the power supply on.
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- **enable_time** (*Optional*, :ref:`config-time`): The time to
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that the power supply needs for startup. The output component will
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wait for this period of time after turning on the PSU and before
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switching the output on. Defaults to ``20ms``.
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- **keep_on_time** (*Optional*, :ref:`config-time`): The time the
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power supply should be kept enabled after the last output that used
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it has been switch off. Defaults to ``10s``.
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See the :ref:`output component base configuration <config-output>`
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for information on how to apply the power supply for a specific output.
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ATX Power Supplies
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------------------
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.. figure:: images/power_supply-atx.jpg
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:align: center
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:width: 80.0%
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The power supply component will default to pulling the specified GPIO
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pin up when high power mode is needed. Most ATX power supplies however
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operate with an active-low configuration. Therefore their output needs
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to be inverted.
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.. code:: yaml
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power_supply:
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- id: 'atx_power_supply'
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pin:
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number: 13
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inverted: true
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Then simply connect the green control wire from the ATX power supply to
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your specified pin. It’s recommended to put a small resistor (about 1kΩ)
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in between to protect the ESP board.
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See Also
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--------
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- :doc:`output/index`
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- :doc:`API Reference </api/core/power-supply>`
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- `Edit this page on GitHub <https://github.com/OttoWinter/esphomedocs/blob/current/esphomeyaml/components/power_supply.rst>`__
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.. disqus::
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