mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-11-16 10:55:21 +01:00
97 lines
3.3 KiB
ReStructuredText
97 lines
3.3 KiB
ReStructuredText
AS7341 Spectral Color Sensor
|
|
============================
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up AS7341 spectral color sensor.
|
|
:image: as7341.jpg
|
|
:keywords: AS7341
|
|
|
|
The ``as7341`` sensor platform allows you to use your AS7341 spectral color sensor
|
|
(`datasheet <https://ams.com/documents/20143/36005/AS7341_DS000504_3-00.pdf/5eca1f59-46e2-6fc5-daf5-d71ad90c9b2b>`__,
|
|
`Adafruit`_) with ESPHome. The :ref:`I²C Bus <i2c>` is required to be set up in
|
|
your configuration for this sensor to work.
|
|
|
|
.. figure:: images/as7341-full.jpg
|
|
:align: center
|
|
:width: 50.0%
|
|
|
|
AS7341 Spectral Color Sensor
|
|
|
|
.. _Adafruit: https://www.adafruit.com/product/4698
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
sensor:
|
|
- platform: as7341
|
|
f1:
|
|
name: "415nm"
|
|
f2:
|
|
name: "445nm"
|
|
f3:
|
|
name: "480nm"
|
|
f4:
|
|
name: "515nm"
|
|
f5:
|
|
name: "555nm"
|
|
f6:
|
|
name: "590nm"
|
|
f7:
|
|
name: "630nm"
|
|
f8:
|
|
name: "680nm"
|
|
clear:
|
|
name: "Clear"
|
|
nir:
|
|
name: "NIR"
|
|
|
|
|
|
Configuration variables
|
|
-----------------------
|
|
|
|
- **f1** (*Optional*): The reading for the 415nm channel. All options from :ref:`Sensor <config-sensor>`.
|
|
- **f2** (*Optional*): The reading for the 445nm channel. All options from :ref:`Sensor <config-sensor>`.
|
|
- **f3** (*Optional*): The reading for the 480nm channel. All options from :ref:`Sensor <config-sensor>`.
|
|
- **f4** (*Optional*): The reading for the 515nm channel. All options from :ref:`Sensor <config-sensor>`.
|
|
- **f5** (*Optional*): The reading for the 555nm channel. All options from :ref:`Sensor <config-sensor>`.
|
|
- **f6** (*Optional*): The reading for the 590nm channel. All options from :ref:`Sensor <config-sensor>`.
|
|
- **f7** (*Optional*): The reading for the 630nm channel. All options from :ref:`Sensor <config-sensor>`.
|
|
- **f8** (*Optional*): The reading for the 680nm channel. All options from :ref:`Sensor <config-sensor>`.
|
|
- **clear** (*Optional*): The reading for the clear channel. All options from :ref:`Sensor <config-sensor>`.
|
|
- **nir** (*Optional*): The reading for the NIR (near-infrared) channel. All options from :ref:`Sensor <config-sensor>`.
|
|
- **gain** (*Optional*): The gain used by the device. A higher gain may be more suitable for lower-light environments. Must be one of:
|
|
|
|
- ``X0.5``
|
|
- ``X1``
|
|
- ``X2``
|
|
- ``X4``
|
|
- ``X8`` (*default*)
|
|
- ``X16``
|
|
- ``X32``
|
|
- ``X64``
|
|
- ``X128``
|
|
- ``X256``
|
|
- ``X512``
|
|
|
|
- **astep** (*Optional*): The number of integration steps. Default is ``599``. Must be between ``0`` and ``65534``.
|
|
- **atime** (*Optional*): The integration time per step in increments of 2.78µs. Default is ``29``. Must be between ``0`` and ``255``.
|
|
- All other options for I²C devices described at :ref:`I²C Bus <i2c>`.
|
|
|
|
Integration time
|
|
----------------
|
|
|
|
The integration time determines how long a channel measurement takes and depends on ``ATIME`` and ``ASTEP``. The formula for the total integration time is:
|
|
|
|
.. math::
|
|
|
|
\text{t} = \text{(ATIME + 1)} \times \text{(ASTEP + 1)} \times \text{2.78µS}
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :ref:`sensor-filters`
|
|
- `Adafruit_AS7341 <https://github.com/adafruit/Adafruit_AS7341>`__
|
|
- `SparkFun_AS7341X_Arduino_Library <https://github.com/sparkfun/SparkFun_AS7341X_Arduino_Library>`__
|
|
- :apiref:`as7341/as7341.h`
|
|
- :ghedit:`Edit`
|