Orientation from Android Accelerometer

Question

I testing the accelerometer output on 2 different devices(Elocity A7 and Archos 7 Home tablet) but the sensor seems to be giving different results. I have it programmed to s

Answer 1

As far as I know this is because of default orientation of device. F.e. new android tablets with Honeycomb have portrait orientation when held like in landscape on phones.

http://developer.android.com/reference/android/hardware/SensorEvent.html

In android documentation there is information that:

The coordinate-system is defined relative to the screen of the phone in its default orientation. The axes are not swapped when the device's screen orientation changes.

The X axis is horizontal and points to the right, the Y axis is vertical and points up and the Z axis points towards the outside of the front face of the screen. In this system, coordinates behind the screen have negative Z values.

Maybe one of this devices has also landscape as a portrait (default) orientation?

Hope it helps you somehow.