ADS1115 Sensor ============== .. seo:: :description: Instructions for setting up ADS1115 multiplexed analog voltage sensors. :image: ads1115.jpg :keywords: ADS1115 The ``ads1115`` sensor allows you to use your ADS1115 sigma-delta ADC sensors (`datasheet `__, `Adafruit`_) with esphomelib. First, setup a :doc:`ADS1115 Hub ` for your ADS1115 sensor and then use this sensor platform to create individual sensors that will report the voltage to Home Assistant. .. figure:: images/ads1115-full.jpg :align: center :width: 50.0% ADS1115 16-Bit ADC. .. _Adafruit: https://www.adafruit.com/product/1085 .. figure:: images/ads1115-ui.png :align: center :width: 80.0% .. code:: yaml ads1115: - address: 0x48 sensor: - platform: ads1115 multiplexer: 'A0_GND' gain: 6.144 name: "ADS1115 Channel A0-GND" Configuration variables: ------------------------ - **multiplexer** (**Required**): The multiplexer channel of this sensor. Effectively means between which pins you want to measure voltage. - **gain** (**Required**, float): The gain of this sensor. - **name** (**Required**, string): The name for this sensor. - **ads1115_id** (*Optional*, :ref:`config-id`): Manually specify the ID of the :doc:`ADS1115 Hub ` you want to use this sensor. - **update_interval** (*Optional*, :ref:`config-time`): The interval to check the sensor. Defaults to ``15s``. See :ref:`sensor-default_filter`. - **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation. Multiplexer And Gain -------------------- The ADS1115 has a multiplexer that can be configured to measure voltage between several pin configurations. These are: - ``A0_A1`` (between Pin 0 and Pin 1) - ``A0_A3`` (between Pin 0 and Pin 3) - ``A1_A3`` (between Pin 1 and Pin 3) - ``A2_A3`` (between Pin 2 and Pin 3) - ``A0_GND`` (between Pin 0 and GND) - ``A1_GND`` (between Pin 1 and GND) - ``A2_GND`` (between Pin 2 and GND) - ``A3_GND`` (between Pin 3 and GND) Additionally, the ADS1115 has a Programmable Gain Amplifier (PGA) that can help you measure voltages in different ranges, these are: - ``6.144`` (measures up to 6.144V) - ``4.096`` (measures up to 4.096V) - ``2.048`` (measures up to 2.048V) - ``1.024`` (measures up to 1.024V) - ``0.512`` (measures up to 0.512V) - ``0.256`` (measures up to 0.256V) See Also -------- - :ref:`sensor-filters` - :doc:`adc` - :doc:`max6675` - :doc:`API Reference ` - `i2cdevlib `__ by `Jeff Rowberg `__ - `Edit this page on GitHub `__ .. disqus::