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This is a config file reference. Click for instructions.

This page is reference material which explains every setting and option for this section of an MPF yaml config file. See the instructions for config files for formatting and other details. See our guide to config file examples for more examples of real configs in action.

Valid in
machine config files YES ✅
mode config files YES ✅


This section can also be used in a show file in the hardware_sounds: section of a step.

The hardware_sound_player: section of your config is where you can control external sound modules (e.g. in LISY).

This is an example:

    label: Default external sound system
      action: play
    3: play
  test_stop: stop

Optional settings

The following sections are optional in the hardware_sound_player: section of your config. (If you don't include them, the default will be used).


Single value, type: one of the following options: play, play_file, text_to_speech, set_volume, increase_volume, decrease_volume, stop. Default: play

play will play a sound. Depending on the hardware this might stop previous sounds. Also loop behavior depends on the hardware and might be different per sound.

stop will stop all sounds.


Single value, type: dict. Defaults to empty.

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Single value, type: string name of a hardware_sound_systems: device. Default: default

In case you got multiple hardware_sound platforms you can expliticly select one here.


Single value, type: integer. Default: 1

The track number to play this sound on. What this means depends on your hardware. Usually, there are one or two tracks.


Single value, type: string. Defaults to empty.

The number of your sound.

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