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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 NO 🚫

The psus: section of your config is where you power supply units. See Voltages and Power in Pinball Machines for details about voltages in pinball machines and some electric details. Then specify to which PSU your coils: are connected. This is used for power management. In some cases, MPF ,ay deliberately delay coil pulses to prevent too many coils from firing and drawing to much current from your PSU. Ball devices and drop target do this by default to ensure more consistent pulses.

Optional settings

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


Single value, type: integer. Defaults to empty.

Maximum ampers which can be provided by this PSU. Currently not used.


Single value, type: time string (ms) (Instructions for entering time strings). Default: 10

Time to wait after a coil pulse.


Single value, type: integer. Defaults to empty.

Voltage of your PSU. Only informal.


Single value, type: one of the following options: none, basic, full. Default: basic

Log level for the console log for this device.


Single value, type: boolean (true/false). Default: false

Set this to true to see additional debug output. This might impact the performance of MPF.


Single value, type: one of the following options: none, basic, full. Default: basic

Log level for the file log for this device.


Single value, type: string. Default: %

Name of this device in service mode.


List of one (or more) values, each is a type: string. Defaults to empty.

Currently unused.

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