Finding accelerometer location inside a phone

[Physikator]

Not owning a turntable I used my salad spinner. I placed a circular piece of paper in there, placed my phone and measured the radius of the rotary motion. The better way would be to move around paper and phone and always mark the new center of rotation, then you can do it with compasses. I did it the other way round: I placed my phone in different positions and marked the outline of the phone (or part of it), overlaid them in a graphics software and then did the above. And it worked surprisingly well. However, I do not recommend the salad spinner (too clumsy), the old turntable is probably better.


  Ortung_Beschleunigungssensor_2.pdf (Size: 1.5 MB / Downloads: 643)
(now containing "theroretical" position of the chip)

Last of the measurements:
   

Anyway, using two components of the accelerometer is a lot more elegant since you only need one run.