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layout	title	description	date	sidebar	comments	sharing	footer	logo	ha_category	ha_release	ha_iot_class
page	Raspihats Switch	Instructions on how to integrate Raspihats add-on boards for Raspberry Pi into Home Assistant as a switch.	2017-05-15 04:20	true	false	true	true	raspihats.png	DIY	0.45	Local Push

The raspihats switch platform allows you to control the digital outputs of your raspihats boards.

{% linkable_title Configuration %}

To use your raspihats boards in your installation, add the following to your configuration.yaml file:

# Example configuration.yaml entry
switch:
  - platform: raspihats
    i2c_hats:
      - board: DI6acDQ6rly
        address: 0x60
        channels:
          - index: 0
            name: Fan Office
            invert_logic: true
            initial_state: true
          - index: 1
            name: Light Office

Configuration variables:

• i2c_hats (Optional): Array of used I2C-HATs.
  • board (Required): The board name.
  • address (Required): The board I2C address, hex value.
    • channels (Required): Array of used digital output channels.
      • index (Required): Digital output channel index.
      • name (Required): Friendly name to use for the frontend.
      • invert_logic (Optional): Inverts the output logic, default is False.
      • initial_state (Optional): Initial state, default is None, can also be True or False. None means no state is forced on the corresponding digital output when this switch is instantiated.

{% linkable_title Directions for installing smbus support on Raspberry Pi %}

Enable I2c interface with the Raspberry Pi configuration utility:

# pi user environment: Enable i2c interface
$ sudo raspi-config

Select Interfacing options->I2C choose <Yes> and hit Enter, then go to Finish.

Install dependencies for use the smbus-cffi module and enable your homeassistant user to join the i2c group:

# pi user environment: Install i2c dependencies and utilities
$ sudo apt-get install build-essential libi2c-dev i2c-tools python-dev libffi-dev

# pi user environment: Add homeassistant user to the i2c group
$ sudo usermod -a -G i2c homeassistant

{% linkable_title Check the i2c address of the sensor %}

After installing i2c-tools, a new utility is available to scan the addresses of the connected sensors, so you can see the sensor address:

$ /usr/sbin/i2cdetect -y 1

It will output a table like this:

     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- 23 -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: 40 -- -- -- -- -- UU -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- 77

For more details about the Raspihats add-on boards for Raspberry Pi, visit raspihats.com.