mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-11-09 10:02:45 +01:00
360 lines
12 KiB
ReStructuredText
360 lines
12 KiB
ReStructuredText
Sensor Component
|
||
================
|
||
|
||
esphomelib has support for many different sensors. Each of them is a
|
||
platform of the ``sensor`` domain and each sensor has several base
|
||
configuration options.
|
||
|
||
.. _config-sensor:
|
||
|
||
Base Sensor Configuration
|
||
-------------------------
|
||
|
||
All sensors in esphomeyaml/esphomelib have a name and some other
|
||
optional configuration options. By default, the sensor platform will
|
||
chose appropriate values for all of these by default, but you can always
|
||
override them if you want to.
|
||
|
||
.. code:: yaml
|
||
|
||
# Example sensor configuration
|
||
name: Livingroom Temperature
|
||
|
||
# Optional variables:
|
||
unit_of_measurement: "°C"
|
||
icon: "mdi:water-percent"
|
||
accuracy_decimals: 1
|
||
expire_after: 30s
|
||
filters:
|
||
- sliding_window_moving_average:
|
||
window_size: 15
|
||
send_every: 15
|
||
|
||
Configuration variables:
|
||
|
||
- **name** (**Required**, string): The name for the sensor.
|
||
- **unit_of_measurement** (*Optional*, string): Manually set the unit
|
||
of measurement the sensor should advertise its values with. This does
|
||
not actually do any maths (conversion between units).
|
||
- **icon** (*Optional*, icon): Manually set the icon to use for the sensor in the frontend.
|
||
- **accuracy_decimals** (*Optional*, int): Manually set the accuracy of decimals to use when reporting values.
|
||
- **expire_after** (*Optional*, :ref:`config-time`): Manually set the time in which
|
||
the sensor values should be marked as “expired”/“unknown”. Not providing any value means no expiry.
|
||
- **filters** (*Optional*): Specify filters to use for some basic
|
||
transforming of values. Defaults to a basic sliding window moving
|
||
average over the last few values. See :ref:`Sensor Filters <sensor-filters>` for more information.
|
||
|
||
Automations:
|
||
|
||
- **on_value** (*Optional*, :ref:`Automation <automation>`): An automation to perform
|
||
when a new value is published. See :ref:`sensor-on_value`.
|
||
- **on_value_range** (*Optional*, :ref:`Automation <automation>`): An automation to perform
|
||
when a published value transition from outside to a range to inside. See :ref:`sensor-on_value_range`.
|
||
- **on_raw_value** (*Optional*, :ref:`Automation <automation>`): An automation to perform
|
||
when a raw value is received that hasn't passed through any filters. See :ref:`sensor-on_raw_value`.
|
||
- All other options from :ref:`MQTT Component <config-mqtt-component>`.
|
||
|
||
|
||
.. note::
|
||
|
||
If you're trying to setup filters for a sensor that has multiple outputs - for example a DHT22 which
|
||
reports temperature *and* humidity - put the ``filters`` option into each sensor output like this:
|
||
|
||
.. code:: yaml
|
||
|
||
sensor:
|
||
- platform: dht
|
||
# ...
|
||
temperature:
|
||
filters:
|
||
# ...
|
||
humidity:
|
||
filters:
|
||
# ...
|
||
|
||
.. _sensor-filters:
|
||
|
||
Sensor Filters
|
||
--------------
|
||
|
||
esphomeyaml/esphomelib allow you to do some basic preprocessing of
|
||
sensor values before they’re sent to Home Assistant. This is for example
|
||
useful if you want to apply some average over the last few values to
|
||
relief Home Assistant’s state machine and keep the history graphs in the
|
||
front-end a bit more clean. More sophisticated filters should be done
|
||
with Home Assistant `filter
|
||
sensor <https://www.home-assistant.io/components/sensor.filter/>`__.
|
||
|
||
.. code:: yaml
|
||
|
||
# Example filters:
|
||
filters:
|
||
- offset: 2.0
|
||
- multiply: 1.2
|
||
- filter_out: 42.0
|
||
- filter_nan:
|
||
- sliding_window_moving_average:
|
||
window_size: 15
|
||
send_every: 15
|
||
- exponential_moving_average:
|
||
alpha: 0.1
|
||
send_every: 15
|
||
- throttle: 1s
|
||
- heartbeat: 5s
|
||
- debounce: 0.1s
|
||
- delta: 5.0
|
||
- unique:
|
||
- or:
|
||
- throttle: 1s
|
||
- delta: 5.0
|
||
- lambda: return x * (9.0/5.0) + 32.0;
|
||
|
||
Above example configuration entry is probably a bit useless, but shows
|
||
every filter there is currently:
|
||
|
||
- **offset**: Add an offset to every sensor value.
|
||
- **multiply**: Multiply each sensor value by this number.
|
||
- **filter_out**: Remove every sensor value that equals this number.
|
||
- **filter_nan**: Remove every value that is considered ``NAN`` (not a
|
||
number) in C.
|
||
- **sliding_window_moving_average**: A `simple moving
|
||
average <https://en.wikipedia.org/wiki/Moving_average#Simple_moving_average>`__
|
||
over the last few values.
|
||
|
||
- **window_size**: The number of values over which to perform an
|
||
average when pushing out a value.
|
||
- **send_every**: How often a sensor value should be pushed out. For
|
||
example, in above configuration the weighted average is only
|
||
pushed out on every 15th received sensor value.
|
||
|
||
- **exponential_moving_average**: A simple `exponential moving
|
||
average <https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average>`__
|
||
over the last few values.
|
||
|
||
- **alpha**: The forget factor/alpha value of the filter.
|
||
- **send_every**: How often a sensor value should be pushed out.
|
||
|
||
- **throttle**: Throttle the incoming values. When this filter gets an incoming value,
|
||
it checks if the last incoming value is at least ``specified time period`` old.
|
||
If it is not older than the configured value, the value is not passed forward.
|
||
|
||
- **heartbeat**: Send the last value that this sensor in the specified time interval.
|
||
So a value of ``10s`` will cause the filter to output values every 10s regardless
|
||
of the input values.
|
||
|
||
- **debounce**: Only send values if the last incoming value is at least ``specified time period``
|
||
old. For example if two values come in at almost the same time, this filter will only output
|
||
the last value and only after the specified time period has passed without any new incoming
|
||
values.
|
||
|
||
- **delta**: This filter stores the last value passed through this filter and only
|
||
passes incoming values through if the absolute difference is greater than the configured
|
||
value. For example if a value of 1.0 first comes in, it's passed on. If the delta filter
|
||
is configured with a value of 5, it will now not pass on an incoming value of 2.0, only values
|
||
that are at least 6.0 big or -4.0.
|
||
|
||
- **unique**: This filter has no parameter and does one very simple thing: It only passes
|
||
forward values if they are different from the last one that got through the pipeline.
|
||
|
||
- **or**: Pass forward a value with the first child filter that returns. Above example
|
||
will only pass forward values that are *either* at least 1s old or are if the absolute
|
||
difference is at least 5.0.
|
||
|
||
- **lambda**: Perform a simple mathematical operation over the sensor
|
||
values. The input value is ``x`` and the result of the lambda is used
|
||
as output. Each floating point operation should have ``.0`` attached
|
||
as in above configuration. This will be copied over to the C++ code
|
||
as a raw string.
|
||
|
||
Example: Converting Celsius to Fahrenheit
|
||
-----------------------------------------
|
||
|
||
While I personally don’t like the Fahrenheit temperature scale, I do
|
||
understand that having temperature values appear in the fahrenheit unit
|
||
is quite useful to some users. esphomelib uses the celsius temperature
|
||
unit internally, and I’m not planning on making converting between the
|
||
two simple (😉), but you can use this filter to convert celsius values to
|
||
fahrenheit.
|
||
|
||
.. code:: yaml
|
||
|
||
filters:
|
||
- lambda: return x * (9.0/5.0) + 32.0;
|
||
unit_of_measurement: "°F"
|
||
|
||
.. _sensor-default_filter:
|
||
|
||
Default Filter
|
||
--------------
|
||
|
||
By default, esphomelib takes an average over the last 15 values before publishing updates.
|
||
This was done in order to automatically decrease sensor noise.
|
||
Therefore if you have an ``update_interval`` of 15 seconds, you will only see the values
|
||
every 3 and a half minutes or so. To disable the default filter and publish all raw values
|
||
directly, put an empty ``filters:`` block in your configuration:
|
||
|
||
.. code:: yaml
|
||
|
||
sensor:
|
||
- platform: ...
|
||
filters:
|
||
|
||
Sensor Automation
|
||
-----------------
|
||
|
||
You can access the most recent state of the sensor in :ref:`lambdas <config-lambda>` using
|
||
``id(sensor_id).value`` and the most recent raw state using ``id(sensor_id).raw_value``.
|
||
|
||
.. _sensor-on_value:
|
||
|
||
``on_value``
|
||
************
|
||
|
||
This automation will be triggered when a new value that has passed through all filters
|
||
is published. In :ref:`Lambdas <config-lambda>` you can get the value from the trigger
|
||
with ``x``.
|
||
|
||
.. code:: yaml
|
||
|
||
sensor:
|
||
- platform: dallas
|
||
# ...
|
||
on_value:
|
||
then:
|
||
- light.turn_on:
|
||
id: light_1
|
||
red: !lambda "return x/255;"
|
||
|
||
Configuration variables: See :ref:`Automation <automation>`.
|
||
|
||
.. _sensor-on_value_range:
|
||
|
||
``on_value_range``
|
||
******************
|
||
|
||
With this automation you can observe if a sensor value passes from outside
|
||
a defined range of values to inside a range. For example you can have an
|
||
automation that triggers when a humidity crosses a threshold, and then turns on a dehumidifier.
|
||
This trigger will only trigger when the new value is inside the range and the previous value
|
||
was outside the range. It will also trigger on startup if the first value received is inside the range.
|
||
|
||
Define the range with ``above`` and ``below``. If only one of them is defined, the interval is half-open.
|
||
So for example ``above: 5`` with no below would mean the range from 5 to positive infinity.
|
||
|
||
.. code:: yaml
|
||
|
||
sensor:
|
||
- platform: dallas
|
||
# ...
|
||
on_value_range:
|
||
above: 5
|
||
below: 10
|
||
then:
|
||
- switch.turn_on:
|
||
id: relay_1
|
||
|
||
Configuration variables:
|
||
|
||
- **above** (*Optional*, float): The minimum for the trigger.
|
||
- **below** (*Optional*, float): The maximum for the trigger.
|
||
- See :ref:`Automation <automation>`.
|
||
|
||
.. _sensor-on_raw_value:
|
||
|
||
``on_raw_value``
|
||
****************
|
||
|
||
This automation will be triggered when a new value that has passed through all filters
|
||
is published. In :ref:`Lambdas <config-lambda>` you can get the value from the trigger
|
||
with ``x``.
|
||
|
||
.. code:: yaml
|
||
|
||
sensor:
|
||
- platform: dallas
|
||
# ...
|
||
on_value:
|
||
then:
|
||
- light.turn_on:
|
||
id: light_1
|
||
red: !lambda "return x/255;"
|
||
|
||
Configuration variables: See :ref:`Automation <automation>`.
|
||
|
||
lambda calls
|
||
************
|
||
|
||
From :ref:`lambdas <config-lambda>`, you can call several methods on all sensors to do some
|
||
advanced stuff (see the full :doc:`API Reference </api/sensor/index>` for more info).
|
||
|
||
- ``push_new_value()``: Manually cause the sensor to push out a value. It will then
|
||
be processed by the sensor filters, and once done be published to MQTT.
|
||
|
||
.. code:: yaml
|
||
|
||
// Within lambda, push a value of 42.0
|
||
id(my_sensor).push_new_value(42.0);
|
||
|
||
- ``value``: Retrieve the current value of the sensor that has passed through all sensor filters.
|
||
Is ``NAN`` if no value has gotten through all filters yet.
|
||
|
||
.. code:: yaml
|
||
|
||
// For example, create a custom log message when a value is received:
|
||
ESP_LOGI("main", "Value of my sensor: %f", id(my_sensor).value);
|
||
|
||
- ``raw_value``: Retrieve the current value of the sensor that has not passed through any filters
|
||
Is ``NAN`` if no value if no value has been pushed by the sensor itself yet.
|
||
|
||
.. code:: yaml
|
||
|
||
// For example, create a custom log message when a value is received:
|
||
ESP_LOGI("main", "Raw Value of my sensor: %f", id(my_sensor).value);
|
||
|
||
|
||
See Also
|
||
********
|
||
|
||
- :doc:`API Reference </api/sensor/index>`
|
||
- `Edit this page on GitHub <https://github.com/OttoWinter/esphomedocs/blob/current/esphomeyaml/components/sensor/index.rst>`__
|
||
|
||
.. toctree::
|
||
:maxdepth: 1
|
||
|
||
adc
|
||
ads1115
|
||
bh1750
|
||
ble_rssi
|
||
bme280
|
||
bme680
|
||
bmp085
|
||
bmp280
|
||
custom
|
||
dallas
|
||
dht
|
||
dht12
|
||
duty_cycle
|
||
esp32_hall
|
||
hdc1080
|
||
hlw8012
|
||
hmc5883l
|
||
htu21d
|
||
hx711
|
||
ina219
|
||
ina3221
|
||
max6675
|
||
mhz19
|
||
mpu6050
|
||
ms5611
|
||
pulse_counter
|
||
rotary_encoder
|
||
sht3xd
|
||
tcs34725
|
||
template
|
||
tsl2561
|
||
ultrasonic
|
||
uptime
|
||
wifi_signal
|
||
xiaomi_miflora
|
||
xiaomi_mijia
|