I machined a cube, put it on a leveling table, screwed the breakout board on, and averaged 50 readings:
X up 252 delta 4
X down -262 delta 6
Y up 257 delta 1
Y down -256 delta 0
Z up 255 delta 0
Z down -242 delta 14
I want to use the device in the ±2 g mode, so I set bits D0 and D1 in register 0x31 accordingly.
On page 30 of Analog Devices' application note, I see there are 3 internal offset register addresses:
0x1E OFSX X-axis offset
0x1F OFSY Y-axis offset
0x20 OFSZ Z-axis offset
On page 30, the offset calibration only refers to a no-turn or 1-point calibration scheme.
But what must I do now with the 6 deltas I obtained from the 6 orientations, when there are only 3 offset registers and no 6-point calibration scheme mentioned?
Are the offset registers only good for a more or less useless 1-point calibration, which would mean I would have to take care of the delta in code instead?