The accuracy of the tilt sensor MMA8451q is plus or minus 2.65%, which is normal in the range of data fluctuatio
In the datasheet there is note that says:
"Sensitivity remains in spec as stated (+/- 2.65%), but changing oversampling mode to low power causes 3% sensitivity shift. This behavior is also seen when changing from 800 Hz to any other data rate in the normal, low-noise + low-power or high-resolution mode."
I think that might answer your question, if it doesn't, please let me know.
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