.. _input_pcf8574:

#####################
PCF8574 input driver
#####################

It works with PCF8574 IO expanders. You can see an guide on modifying them and connecting them to buttons & I2C `here. <http://www.instructables.com/id/Raspberry-Pi-Using-1-I2C-LCD-Backpacks-for-1602-Sc/>`__

.. code:: json

    "input":
       [{
         "driver":"pcf8574",
         "kwargs":
          {
           "addr":63,
           "int_pin":4
          }
       }]


.. toctree::

.. automodule:: input.drivers.pcf8574
 
.. autoclass:: InputDevice
    :members:
    :special-members: