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78 lines
2.9 KiB
ReStructuredText
78 lines
2.9 KiB
ReStructuredText
INA219 DC Current Sensor
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========================
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.. seo::
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:description: Instructions for setting up INA219 DC current sensors
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:image: ina219.jpg
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:keywords: ina219
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The ``ina219`` sensor platform allows you to use your INA219 High Side DC Current Sensor
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(`datasheet <https://cdn-learn.adafruit.com/downloads/pdf/adafruit-ina219-current-sensor-breakout.pdf>`__,
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`Adafruit`_) sensors with
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esphomelib. The :ref:`I²C Bus <i2c>` is
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required to be set up in your configuration for this sensor to work.
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.. figure:: images/ina219-full.jpg
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:align: center
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:width: 50.0%
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INA219 DC Current Sensor.
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.. _Adafruit: https://www.adafruit.com/product/904
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.. figure:: images/ina219-ui.png
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:align: center
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:width: 80.0%
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.. code-block:: yaml
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# Example configuration entry
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sensor:
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- platform: ina219
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address: 0x40
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shunt_resistance: 0.1 ohm
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current:
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name: "INA219 Current"
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power:
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name: "INA219 Power"
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bus_voltage:
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name: "INA219 Bus Voltage"
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shunt_voltage:
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name: "INA219 Shunt Voltage"
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max_voltage: 32.0V
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max_current: 3.2A
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update_interval: 60s
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Configuration variables:
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------------------------
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- **address** (*Optional*, int): Manually specify the i^2c address of the sensor. Defaults to ``0x40``.
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- **shunt_resistance** (*Optional*, float): The value of the shunt resistor on the board for current calculation.
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Defaults to ``0.1 ohm``.
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- **max_voltage** (*Optional*, float): The maximum bus voltage you are expecting. esphomelib will use this to
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configure the sensor optimally. Defaults to ``32V`` (the max).
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- **max_current** (*Optional*, float): The maximum current you are expecting. esphomelib will use this to
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configure the sensor optimally. Defaults to ``3.2A``.
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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 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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- **bus_voltage** (*Optional*): Use the bus voltage (voltage of the high side contact) value of the sensor in V.
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All options from :ref:`Sensor <config-sensor>` and :ref:`MQTT Component <config-mqtt-component>`.
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- **shunt_voltage** (*Optional*): Use the shunt voltage (voltage across the shunt resistor) value of the sensor in V.
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All options from :ref:`Sensor <config-sensor>` and :ref:`MQTT Component <config-mqtt-component>`.
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- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the sensor. Defaults to ``60s``.
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See Also
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--------
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- :ref:`sensor-filters`
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- :doc:`ina3221`
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- :apiref:`sensor/ina219.h`
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- `INA291 Arduino Library <https://github.com/adafruit/Adafruit_INA219>`__ by `Adafruit <https://www.adafruit.com/>`__
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- :ghedit:`Edit`
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.. disqus::
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