May 15, 2011
here some explanations: http://purposefulscience.blogspot.com.es/2014/04/balancing-multirotor-motors-with.html
I think this is due to the fact that the sensor is factory calibrated at 2g for Zero-g offset. If you plan to use it with a different scale you should recalibrate offsets to get 1g at z when stationary.
The value at the offset register is stored using the scale at calibration time, if at 2g then 0.25 mg/count, so if you change scale to 4g without recalibrating then at stationary will read double value (2g instead of 1g) beacuse at 4g it is 0.5 mg/count, so same number of counts in the offset register will read double g.
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