acceleration sensors: which one do you use ?

[Werner Almesberger]

Patryk Benderz wrote:
> Will one accelerometer be sufficient to detect that FR is in position
> with screen is downward?

Yes. The acceleration the sensor reports is basically a superimposition
of earth's gravitational pull and any forces moving the phone. So if
you apply a low-pass filter to the data stream (or if the phone isn't
being moved), you can determine its orientation.

- Werner