mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-11-02 08:49:48 +01:00
128 lines
4.1 KiB
ReStructuredText
128 lines
4.1 KiB
ReStructuredText
ADS1115 Sensor
|
|
==============
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up ADS1115 multiplexed analog voltage sensors.
|
|
:image: ads1115.jpg
|
|
:keywords: ADS1115
|
|
|
|
.. _ads1115-component:
|
|
|
|
Component/Hub
|
|
-------------
|
|
|
|
The ``ads1115`` domain creates a global hub so that you can later create
|
|
individual sensors using the :ref:`ADS1115 Sensor Platform <ads1115-sensor>`.
|
|
To use this hub, first setup the :ref:`I²C Bus <i2c>` and connect the sensor to the pins specified there.
|
|
|
|
.. figure:: images/ads1115-full.jpg
|
|
:align: center
|
|
:width: 50.0%
|
|
|
|
ADS1115 16-Bit ADC.
|
|
|
|
.. _Adafruit: https://www.adafruit.com/product/1085
|
|
|
|
.. code-block:: yaml
|
|
|
|
ads1115:
|
|
- address: 0x48
|
|
|
|
Configuration variables:
|
|
************************
|
|
|
|
- **address** (**Required**, int): The i²c address of the sensor.
|
|
See :ref:`I²C Addresses <ads1115_i2c_addresses>` for more information.
|
|
- **continuous_mode** (*Optional*, boolean): Set if the ADS1115 should continuously measure voltages or
|
|
only measure them when an update is called. Please enable this for the :doc:`ct_clamp` integration.
|
|
Defaults to ``off``.
|
|
- **id** (*Optional*, :ref:`config-id`): Manually specify the ID for this ADS1115 Hub. Use this if you
|
|
want to use multiple ADS1115 hubs at once.
|
|
|
|
.. _ads1115_i2c_addresses:
|
|
|
|
I²C Addresses
|
|
-------------
|
|
|
|
In order to allow multiple sensors to be connected to the same i²c bus,
|
|
the creators of this sensor hardware have included some options to
|
|
change the i²c address.
|
|
|
|
- If the address pin is pulled to GND, the address is ``0x48`` (Default).
|
|
- If the address pin is pulled to VCC, the address is ``0x49``.
|
|
- If the address pin is tied to SDA, the address is ``0x4a``.
|
|
- If the address pin is tied to SCL, the address is ``0x4B``.
|
|
|
|
.. _ads1115-sensor:
|
|
|
|
Sensor
|
|
------
|
|
|
|
The ``ads1115`` sensor allows you to use your ADS1115 sigma-delta ADC
|
|
sensors (`datasheet <http://www.ti.com/lit/ds/symlink/ads1115.pdf>`__, `Adafruit`_) with ESPHome.
|
|
First, setup an :ref:`ADS1115 Hub <ads1115-component>` for your ADS1115 sensor and then use this
|
|
sensor platform to create individual sensors that will report the
|
|
voltage to Home Assistant.
|
|
|
|
.. _Adafruit: https://www.adafruit.com/product/1085
|
|
|
|
.. figure:: images/ads1115-ui.png
|
|
:align: center
|
|
:width: 80.0%
|
|
|
|
.. code-block:: 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
|
|
:ref:`ADS1115 Hub <ads1115-component>` you want to use this sensor.
|
|
- **update_interval** (*Optional*, :ref:`config-time`): The interval
|
|
to check the sensor. Defaults to ``60s``.
|
|
- **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`
|
|
- :apiref:`ads1115/ads1115.h`
|
|
- `i2cdevlib <https://github.com/jrowberg/i2cdevlib>`__ by `Jeff Rowberg <https://github.com/jrowberg>`__
|
|
- :ghedit:`Edit`
|