Understanding accelerometer data
neiljerram at googlemail.com
Thu Oct 29 23:49:07 CET 2009
2009/10/29 Michael Tansella <michael-tansella at gmx.de>:
> If the Freerunner is not moving (x^2+y^2+z^2)^(1/2) must be g. The values of
> the freerunner are in mg so it must be 1000.
> Your values are really strange. Do the x values never change?
Not never, but they do seem reluctant to change. For example if I
lift the end of the FR with the hole in, keeping the side-to-side axis
horizontal, I would expect the x and y values of event2 to increase
equally, and z to decrease a bit. What I observed was as expected for
y and z, but no change in x.
> I would recommend the python script for easy testing:
It's certainly possible that I've just written my program wrong. So
yes, I'll try that script too.
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