N7 Autopilot User Manual (ArduPilot) v1.0
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4. The vehicle must be kept still immediately after pressing the key for each step.
This is more important than getting the angle exactly right, i.e., left being 90-deg
to horizontal, etc. Except for the first “LEVEL”, the positions can be within 20
degrees of being exact. Being still in each position as you press the key is much
more important.
Calibrate Level
The level position is the most important to get right as this will be the attitude that
your controller considers level while flying.
You can recalibrate this Level position using Mission Planner after you have
installed the autopilot and are ready to fly. Place the vehicle in its level flying attitude
and use the Calibrate Level button.
Mark
This Calibrate Level operation can only correct up to a 10-degree difference between the
initial calibration and the final position in the vehicle, and only corrects pitch and roll
differences, not yaw.
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