mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-11-03 09:00:28 +01:00
896afdcfa1
* Missing colon * update sun * format fix and adaptation * fix format * fix format 2 * fix format 3 * fix format * fix format * fix format * format fix * revert title as heads * rename image case-sensitive * rename again
86 lines
3.3 KiB
ReStructuredText
86 lines
3.3 KiB
ReStructuredText
MPR121 Capacitive Touch Sensor
|
|
==============================
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up MPR121 Capacitive Touch Sensor
|
|
:image: mpr121.jpg
|
|
:keywords: MPR121
|
|
|
|
.. _mpr121-component:
|
|
|
|
Component/Hub
|
|
-------------
|
|
|
|
The ``mpr121`` sensor platform allows you to use your MPR121
|
|
(`datasheet <https://cdn-learn.adafruit.com/downloads/pdf/adafruit-mpr121-12-key-capacitive-touch-sensor-breakout-tutorial.pdf>`__,
|
|
`Adafruit`_) Capacitive Touch Sensor with ESPHome. The :ref:`I²C <i2c>` is
|
|
required to be set up in your configuration for this sensor to work.
|
|
|
|
.. figure:: images/mpr121-full.jpg
|
|
:align: center
|
|
:width: 50.0%
|
|
|
|
MPR121 Capacitive Touch Sensor. Image by `Adafruit`_.
|
|
|
|
.. _Adafruit: https://learn.adafruit.com/adafruit-mpr121-12-key-capacitive-touch-sensor-breakout-tutorial/overview
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
mpr121:
|
|
id: mpr121_component
|
|
address: 0x5A
|
|
touch_debounce: 1
|
|
release_debounce: 1
|
|
touch_threshold: 10
|
|
release_threshold: 7
|
|
|
|
binary_sensor:
|
|
- platform: mpr121
|
|
id: touch_key0
|
|
channel: 0
|
|
name: "Touch Key 0"
|
|
touch_threshold: 12
|
|
release_threshold: 6
|
|
|
|
Configuration variables:
|
|
------------------------
|
|
|
|
The configuration is made up of two parts: The central component, and individual Binary sensors per channel.
|
|
|
|
- **address** (*Optional*, integer): The I²C address of the sensor. Defaults to ``0x5A``.
|
|
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor.
|
|
- **touch_debounce** (*Optional*, integer): The minimum length before a touch is recognized. Range is from 0 to 7.
|
|
Defaults to 0.
|
|
- **release_debounce** (*Optional*, integer): The minimum length that no touch is recognized before a release event is created.
|
|
Range is from 0 to 7. Defaults to 0.
|
|
- **touch_threshold** (*Optional*, integer): The touch threshold for all channels. This defines the sensitivity for touch detection
|
|
and should be between 5 and 30 (lower = more sensitive). Defaults to 12. Typically the touch threshold is a little bigger than the release threshold.
|
|
- **release_threshold** (*Optional*, integer): The release defines the sensitivity for touch detection and should be between 5 and 30. Defaults to 6.
|
|
|
|
Binary Sensor
|
|
-------------
|
|
|
|
The ``mpr121`` binary sensor allows you to use your MPR121 with ESPHome.
|
|
First, setup a :ref:`mpr121-component` and then use this binary sensor platform to create individual
|
|
binary sensors for each touch sensor.
|
|
|
|
|
|
Configuration variables:
|
|
|
|
|
|
- **name** (*Optional*, string): The name for the binary sensor.
|
|
- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
|
|
- **channel** (**Required**, integer): The channel number at the MPR121 the touchkey is connected to.
|
|
- **touch_threshold** (*Optional*, integer): A per-channel override of the global touch_threshold value. If not specified, uses the global value.
|
|
- **release_threshold** (*Optional*, integer): A per-channel override of the global release_threshold value. If not specified, uses the global value.
|
|
- All other options from :ref:`Binary Sensor <config-binary_sensor>`.
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :ref:`sensor-filters`
|
|
- :apiref:`mpr121/mpr121.h`
|
|
- `Adafruit MPR121 Library <https://github.com/adafruit/Adafruit_MPR121_Library>`__ by `Adafruit <https://www.adafruit.com/>`__
|
|
- :ghedit:`Edit`
|