Am Montag, den 15.03.2010, 09:13 -0700 schrieb lfl@xxxxxxxxxxxxx: > >> When my accelerometer is working (it gets stuck every time the N900 > >> runs out of battery and is recharged) and I place it on a flat table, > >> AccDisplay shows: > >> > >> X: 0.02 > >> Z: -0.95 > >> Y: 0.02 > >> > >> I could find any position where all variables become close to 0. > >> Anyway, I don't know yet how it works. I guess the variables might be > >> related to the current angle on that axis, but the angle is expressed > >> from -1.00 to 1.00. > >> > >> Since it is called an "accelerometer", isn't it supposed to tell the > >> current acceleration in any axis? > > > > Yes, it is. Therefore it's correctly showing acceleration of -0.95m/s² > > downwards - which is the accel/force that makes you stay on the ground. > > I'd say the accelerometer is working perfectly well. (Implying the > > 0.02m/s² on x/y axes are caused by jitter.) > > Hello Marcel > > Did you intend to reply only to me or to the maemo-list? Sorry, I meant to reply to the list. CC'ed it now. > Last time I checked, earth gravity's acceleration was 9.81m/s^2 ;-) Sounds reasonable actually... > Joking aside, if it is measuring acceleration indeed it must be in another > unit, right? If it's any unit at all. Maybe one could just convert it for human readability. > > Those values of 0.02 can be attributed to either small vibrations in the > building where the table is placed or just hardware fluctuation. I just > would like to make sense of the readings. If you get the same -0.95whateverunititis in every direction while rotating the N900, I'd guess at least the hardware works okay. Marcel _______________________________________________ maemo-users mailing list maemo-users@xxxxxxxxx https://lists.maemo.org/mailman/listinfo/maemo-users
