Easy way to detect movement of the sensor?

[ctschach]

I want to use the sensor to detect if an object (my car - where the sensor and microcontroller is mounted) is moving or not. It looks like the advanced filtering of this sensor makes the readings much more reliable.

Does the sensor even already come with this feature? Any experiences?

[peterhinch]

An IMU cannot in principle detect motion at constant velocity. It can detect changes in direction, acceleration/deceleration, and vibration consequent on movement. I don't know any ready made solutions to your problem, but it will make an interesting project for experimentation.

The other solution is GPS which can detect movement relative to Earth's surface.

[ctschach]

Okay, I was hoping for an easy way. Let's look closer at the changing values and see if this might help to identify movement.

For GPS...yes, I know, but it takes more power and more time to fix the position. I want to use the "movement detection sensor" to detect if it's worth to start the GPS and look for a position. Or to determine how often I want to read the GPS position (if car is not moving, read it every 30 min), if car is moving, then update every 1 min or so...