old_contents: """
  homeassistant.components.switch.arduino
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Support for switching Arduino pins on and off. So far only digital pins are
  supported.
  
  Configuration:
  
  To use the arduino switch you will need to add something like the following
  to your configuration.yaml file.
  
  switch:
    platform: arduino
    pins:
      11:
        name: Fan Office
        type: digital
      12:
        name: Light Desk
        type: digital
  
  Variables:
  
  pins
  *Required
  An array specifying the digital pins to use on the Arduino board.
  
  These are the variables for the pins array:
  
  name
  *Required
  The name for the pin that will be used in the frontend.
  
  type
  *Required
  The type of the pin: 'digital'.
  """
  import logging
  
  import homeassistant.components.arduino as arduino
  from homeassistant.components.switch import SwitchDevice
  from homeassistant.const import DEVICE_DEFAULT_NAME
  
  DEPENDENCIES = ['arduino']
  
  _LOGGER = logging.getLogger(__name__)
  
  
  def setup_platform(hass, config, add_devices, discovery_info=None):
      """ Sets up the Arduino platform. """
  
      # Verify that Arduino board is present
      if arduino.BOARD is None:
          _LOGGER.error('A connection has not been made to the Arduino board.')
          return False
  
      switches = []
      pins = config.get('pins')
      for pinnum, pin in pins.items():
          if pin.get('name'):
              switches.append(ArduinoSwitch(pin.get('name'),
                                            pinnum,
                                            pin.get('type')))
      add_devices(switches)
  
  
  class ArduinoSwitch(SwitchDevice):
      """ Represents an Arduino switch. """
      def __init__(self, name, pin, pin_type):
          self._pin = pin
          self._name = name or DEVICE_DEFAULT_NAME
          self.pin_type = pin_type
          self.direction = 'out'
          self._state = False
  
          arduino.BOARD.set_mode(self._pin, self.direction, self.pin_type)
  
      @property
      def name(self):
          """ Get the name of the pin. """
          return self._name
  
      @property
      def is_on(self):
          """ Returns True if pin is high/on. """
          return self._state
  
      def turn_on(self):
          """ Turns the pin to high/on. """
          self._state = True
          arduino.BOARD.set_digital_out_high(self._pin)
  
      def turn_off(self):
          """ Turns the pin to low/off. """
          self._state = False
          arduino.BOARD.set_digital_out_low(self._pin)
  
new_contents: """
  homeassistant.components.switch.arduino
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Support for switching Arduino pins on and off. So far only digital pins are
  supported.
  
  For more details about this platform, please refer to the documentation at
  https://home-assistant.io/components/switch.arduino.html
  """
  import logging
  
  import homeassistant.components.arduino as arduino
  from homeassistant.components.switch import SwitchDevice
  from homeassistant.const import DEVICE_DEFAULT_NAME
  
  DEPENDENCIES = ['arduino']
  
  _LOGGER = logging.getLogger(__name__)
  
  
  def setup_platform(hass, config, add_devices, discovery_info=None):
      """ Sets up the Arduino platform. """
  
      # Verify that Arduino board is present
      if arduino.BOARD is None:
          _LOGGER.error('A connection has not been made to the Arduino board.')
          return False
  
      switches = []
      pins = config.get('pins')
      for pinnum, pin in pins.items():
          if pin.get('name'):
              switches.append(ArduinoSwitch(pin.get('name'),
                                            pinnum,
                                            pin.get('type')))
      add_devices(switches)
  
  
  class ArduinoSwitch(SwitchDevice):
      """ Represents an Arduino switch. """
      def __init__(self, name, pin, pin_type):
          self._pin = pin
          self._name = name or DEVICE_DEFAULT_NAME
          self.pin_type = pin_type
          self.direction = 'out'
          self._state = False
  
          arduino.BOARD.set_mode(self._pin, self.direction, self.pin_type)
  
      @property
      def name(self):
          """ Get the name of the pin. """
          return self._name
  
      @property
      def is_on(self):
          """ Returns True if pin is high/on. """
          return self._state
  
      def turn_on(self):
          """ Turns the pin to high/on. """
          self._state = True
          arduino.BOARD.set_digital_out_high(self._pin)
  
      def turn_off(self):
          """ Turns the pin to low/off. """
          self._state = False
          arduino.BOARD.set_digital_out_low(self._pin)
  
subject: Remove configuration details