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71 lines
2.4 KiB
ReStructuredText
71 lines
2.4 KiB
ReStructuredText
ADS1115 Sensor
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==============
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The ``ads1115`` sensor allows you to use your ADS1115 sigma-delta ADC
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sensors (`datasheet <http://www.ti.com/lit/ds/symlink/ads1115.pdf>`__,
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`adafruit <https://www.adafruit.com/product/1085>`__) with esphomelib.
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First, setup a `ADS1115 Hub </esphomeyaml/components/ads1115.html>`__ for your ADS1115 sensor and then use this
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sensor platform to create individual sensors that will report the
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voltage to Home Assistant.
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.. figure:: /esphomeyaml/components/sensor/images/ads1115-full.jpg
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:align: center
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:target: `Adafruit`_
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:width: 50.0%
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ADS1115 16-Bit ADC. Image by `Adafruit`_.
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.. _Adafruit: https://www.adafruit.com/product/1085
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|image0|
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.. |image0| image:: /esphomeyaml/components/sensor/images/adc.png
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:class: align-center
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:width: 80.0%
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.. code:: yaml
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ads1115:
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- address: 0x48
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sensor:
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- platform: ads1115
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multiplexer: 'A0_A1'
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gain: 1.024
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name: "Living Room Brightness"
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Configuration variables:
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~~~~~~~~~~~~~~~~~~~~~~~~
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- **multiplexer** (**Required**): The multiplexer channel of this sensor. Effectively means between which pins you
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want to measure voltage.
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- **gain** (**Required**, float): The gain of this sensor.
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- **name** (**Required**, string): The name for this sensor.
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- **ads1115_id** (*Optional*, `id </esphomeyaml/configuration-types.html#id>`__): Manually specify the ID of the
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`ADS1115 Hub </esphomeyaml/components/ads1115.html>`__ you want to use this sensor.
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- **id** (*Optional*, `id </esphomeyaml/configuration-types.html#id>`__): Manually specify
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the ID used for code generation.
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Multiplexer And Gain
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~~~~~~~~~~~~~~~~~~~~
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The ADS1115 has a multiplexer that can be configured to measure voltage between several pin configurations. These are:
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- ``A0_A1`` (between Pin 0 and Pin 1)
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- ``A0_A3`` (between Pin 0 and Pin 3)
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- ``A1_A3`` (between Pin 1 and Pin 3)
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- ``A2_A3`` (between Pin 2 and Pin 3)
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- ``A0_GND`` (between Pin 0 and GND)
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- ``A1_GND`` (between Pin 1 and GND)
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- ``A2_GND`` (between Pin 2 and GND)
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- ``A3_GND`` (between Pin 3 and GND)
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Additionally, the ADS1115 has a Programmable Gain Amplifier (PGA) that can help you measure voltages in different ranges, these are:
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- ``6.144`` (measures up to 6.144V)
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- ``4.096`` (measures up to 4.096V)
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- ``2.048`` (measures up to 2.048V)
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- ``1.024`` (measures up to 1.024V)
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- ``0.512`` (measures up to 0.512V)
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- ``0.256`` (measures up to 0.256V)
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