PCA9685 PWM Component
=====================

The PCA9685 component represents a PCA9685 12-bit PWM driver
(`datasheet <https://esp-idf.readthedocs.io/en/latest/api-reference/peripherals/ledc.html#configure-channel>`__,
`adafruit <https://www.adafruit.com/product/815>`__) in esphomelib. It
uses `I²C Bus </esphomeyaml/components/i2c.html>`__ 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
`individual output channels </esphomeyaml/components/output/pca9685>`__.

.. code:: yaml

    # Example configuration entry
    pca9685:
      - id: 'pca9685_hub1'
        frequency: 500

    # Individual outputs
    output:
      - platform: pca9685
        id: 'pca9685_output1'
        pca9685_id: 'pca9685_hub1'
        channel: 0

Configuration variables:
~~~~~~~~~~~~~~~~~~~~~~~~

-  **id** (**Required**,
   `id </esphomeyaml/configuration-types.html#id>`__): The id to use for
   this pca9685 component.
-  **frequency** (**Required**, float): The frequency to let the
   component drive all PWM outputs at. Must be in range from 24Hz to
   1526Hz.
-  **address** (*Optional*, int): The I²C address of the driver.
   Defaults to ``0x00``.