mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-08-30 00:09:40 +02:00
139 lines
3.7 KiB
ReStructuredText
139 lines
3.7 KiB
ReStructuredText
PCA9685
|
|
=======
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up PCA9685 LED PWM drivers.
|
|
:image: pca9685.jpg
|
|
:keywords: PCA9685
|
|
|
|
.. _pca9685-component:
|
|
|
|
Component/Hub
|
|
-------------
|
|
|
|
The PCA9685 component represents a PCA9685 12-bit PWM driver
|
|
(`datasheet <https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/ledc.html#configure-channel>`__,
|
|
`adafruit <https://www.adafruit.com/product/815>`__) in ESPHome. It
|
|
uses :ref:`I²C Bus <i2c>` for communication.
|
|
|
|
To use the channels of this components, you first need to setup the
|
|
global ``pca9685`` hub and give it an id, and then define the
|
|
:ref:`individual output channels <pca9685-output>`.
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
pca9685:
|
|
- id: pca9685_hub1
|
|
frequency: 500
|
|
|
|
# Individual outputs
|
|
output:
|
|
- platform: pca9685
|
|
pca9685_id: 'pca9685_hub1'
|
|
channel: 0
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry with external clock enable and clock source from ESP32
|
|
pca9685:
|
|
- id: pca9685_hub1
|
|
external_clock_input: true
|
|
|
|
# Individual outputs
|
|
output:
|
|
# generate PWM from ESP32 ledc
|
|
- platform: ledc
|
|
pin: 25
|
|
id: extclk
|
|
min_power: 1
|
|
frequency: 40MHz
|
|
|
|
- platform: pca9685
|
|
pca9685_id: 'pca9685_hub1'
|
|
channel: 0
|
|
|
|
Configuration variables:
|
|
************************
|
|
|
|
- **frequency** (*Optional*, float): The frequency to let the
|
|
component drive all PWM outputs at. Must be in range from 24Hz to
|
|
1525.88Hz. Default ``1000Hz``.
|
|
- **external_clock_input** (*Optional*, bool): Enable external clock input. PRE_SCALE register will by set to 3. Default to ``false``.
|
|
- **address** (*Optional*, int): The I²C address of the driver.
|
|
Defaults to ``0x40``.
|
|
- **id** (*Optional*, :ref:`config-id`): The id to use for
|
|
this pca9685 component. Use this if you have multiple PCA9685s connected at the same time
|
|
|
|
.. _pca9685-output:
|
|
|
|
PCA9685 Output
|
|
--------------
|
|
|
|
The PCA9685 output component exposes a PCA9685 PWM channel of a global
|
|
:ref:`PCA9685 hub <pca9685-component>` as a float
|
|
output.
|
|
|
|
.. figure:: images/pca9685-full.jpg
|
|
:align: center
|
|
:width: 75.0%
|
|
|
|
PCA9685 16-Channel PWM Driver.
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
pca9685:
|
|
- frequency: 500
|
|
|
|
# Individual outputs
|
|
output:
|
|
- platform: pca9685
|
|
id: 'pca9685_output1'
|
|
channel: 0
|
|
|
|
Configuration variables:
|
|
************************
|
|
|
|
- **id** (**Required**, :ref:`config-id`): The id to use for this output component.
|
|
- **channel** (**Required**, int): Chose the channel of the PCA9685 of
|
|
this output component. Must be in range from 0 to 15.
|
|
- **pca9685_id** (*Optional*, :ref:`config-id`): Manually specify the ID of the
|
|
:ref:`PCA9685 hub <pca9685-component>`.
|
|
Use this if you have multiple PCA9685s you want to use at the same time.
|
|
- All other options from :ref:`Output <config-output>`.
|
|
|
|
|
|
Examples
|
|
--------
|
|
|
|
This output can be used for different PWM functions. E.g. output for light, fan etc.
|
|
|
|
.. code-block:: yaml
|
|
|
|
pca9685:
|
|
frequency: 500
|
|
|
|
output:
|
|
- platform: pca9685
|
|
channel: 0
|
|
id: pwm01
|
|
|
|
light:
|
|
- platform: monochromatic
|
|
name: 'main light'
|
|
output: pwm01
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :doc:`/components/output/index`
|
|
- :doc:`/components/output/esp8266_pwm`
|
|
- :doc:`/components/output/ledc`
|
|
- :doc:`/components/light/monochromatic`
|
|
- :doc:`/components/fan/speed`
|
|
- :doc:`/components/power_supply`
|
|
- :apiref:`pca9685/pca9685_output.h`
|
|
- `PCA9685 Arduino Library <https://github.com/NachtRaveVL/PCA9685-Arduino>`__ by `@NachtRaveVL <https://github.com/NachtRaveVL>`__
|
|
- :ghedit:`Edit`
|