This is the documentation the latest work-in-progress version of MPF!

This is the documentation for MPF 0.56, which is the “dev” (next) release of MPF that is a work-in-progress. This is probably ok, and means you’ll be on the latest, cutting-edge version of MPF.

However, if you want a more stable version, select the v:stable version from the lower-left corner of this page, which is the most recent version that is not getting new updates.

If you are new to MPF, we have recently rewritten the installation process which only applies to this “latest” 0.56, so you probably want to stay here because the prior installation process doesn’t work on the latest OS and Python versions.


Related Config File Sections

An accelerometer is a device that measures proper acceleration; proper acceleration is not the same as coordinate acceleration (rate of change of velocity). For example, an accelerometer at rest on the surface of the Earth will measure an acceleration due to Earth’s gravity, straight upwards (by definition) of g ~= 9.81 m/s2. By contrast, accelerometers in free fall (falling toward the center of the Earth at a rate of about 9.81 m/s2) will measure zero.

TODO: Add a picture of an accelerometer

Accelerometers in pinball could be used to measure a machine’s TILT, replacing the tilt bob, to measure vibration, or even the angle of the playfield at a given time.

Learn more at: https://en.wikipedia.org/wiki/Accelerometer

Monitorable Properties

For dynamic values and conditional events, the prefix for accelerometers is device.accelerometers.<name>.

A three-item tuple (x, y, z) of the current accelerometer values.