2018-08-24 22:44:01 +02:00
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HLW8012 Power Sensor
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====================
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The ``hlw8012`` sensor platform allows you to use your HLW8012 voltage/current and power sensors
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(`datasheet <https://github.com/xoseperez/hlw8012/blob/master/docs/HLW8012.pdf>`__) sensors with
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esphomelib. This sensor is commonly found in Sonoff POWs.
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This sensor has two data outputs which both encode values using the frequency of a modulated signal: CF and CF1.
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CF's frequency is proportional to the (active) power measured and CF1 is proportional to the current/voltage. Using
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the SEL pin, one can choose between which mode to use.
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esphomelib will continuously cycle the state of the SEL pin to measure current *and* voltage, though both cannot
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be measured at the same exact points in time.
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.. code:: yaml
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# Example configuration entry
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sensor:
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- platform: hlw8012
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sel_pin: 5
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cf_pin: 14
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cf1_pin: 13
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current:
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name: "HLW8012 Current"
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voltage:
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name: "HLW8012 Voltage"
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power:
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name: "HLW8012 Power"
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update_interval: 15s
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.. note::
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The configuration above should work for Sonoff POWs (R1).
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Configuration variables:
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------------------------
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- **sel_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The pin SEL is connected to.
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- **cf_pin** (**Required**, :ref:`config-pin`): The pin CF is connected to.
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- **cf1_pin** (**Required**, :ref:`config-pin`): The pin CF1 is connected to.
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- **current** (*Optional*): Use the current value of the sensor in amperes. All options from
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:ref:`Sensor <config-sensor>` and :ref:`MQTT Component <config-mqtt-component>`.
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- **power** (*Optional*): Use the (active) power value of the sensor in watts. All options from
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:ref:`Sensor <config-sensor>` and :ref:`MQTT Component <config-mqtt-component>`.
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- **voltage** (*Optional*): Use the voltage value of the sensor in V (RMS).
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All options from :ref:`Sensor <config-sensor>` and :ref:`MQTT Component <config-mqtt-component>`.
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- **current_resistor** (*Optional*, float): The value of the shunt resistor for current measurement.
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Defaults to the Sonoff POW's value ``0.001 ohm``.
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- **voltage_divider** (*Optional*, float): The value of the voltage divider on the board as ``(R_upstream + R_downstream) / R_downstream``.
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Defaults to the Sonoff POW's value ``2351``.
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- **change_mode_every** (*Optional*, int): After how many updates to cycle between the current/voltage measurement mode.
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Note that the first value after switching is discarded because it is often inaccurate. Defaults to ``8``.
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- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the sensor. Defaults to ``15s``.
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See :ref:`sensor-default_filter`.
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See Also
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--------
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- :ref:`sensor-filters`
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- :doc:`API Reference </api/sensor/hlw8012>`
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- `HLW8012 Library <https://github.com/xoseperez/hlw8012>`__ by `Xose Pérez <https://github.com/xoseperez>`__
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- `Edit this page on GitHub <https://github.com/OttoWinter/esphomedocs/blob/current/esphomeyaml/components/sensor/hlw8012.rst>`__
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2018-10-12 16:33:22 +02:00
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.. disqus::
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