Magnetic Scale Speedometer

Peter Akers

About this app

This is an experimental app that uses the uses the phone's magnetometer sensor to calculate scale speed.

You just need:
- The app, and
- two similar magnets stuck on a carriage or carriages at a fixed distance apart.

The app reads the passing of the magnets and calculates the speed.

What’s new

Scale speedometer using an Android phone and two magnets.
This is a free, open-source, app that uses the phone's magnetometer sensor to calculate scale speed.

New this version
- Added double back button to exit
Based on a suggestion by Brendan S.