Christian
lvl.3
Germany
Offline
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Hi Bogdan, sounds good to me so far.
The distance from potential interference is in my understanding important for the compass calibration and not necessarily for the IMU calibration.
So for IMU:
+ check if calibration is necessary
+ Aircraft Shutdown for at least 5 minutes or do IMU cal. when you startup the aircraft (which is the normal way).
+ Leveled (as far as possible in the field)
+ Aircraft in Flight Mode
+ don´t touch or move the aircraft during calibration (important)
+ check values in the app (should be 0.99 to 1.01)
For compass calibration:
+ Best if there are no potential interference like: power lines, concrete with metal, big metal structures, wifi/cellular networks (iphone in your pocket) and keep the remote away while you calibrate
+ take the copter in both hands, straighten your arms (nose front) and turn it around your body axle (leveled) counterclockwise, then bring nose down and turn ccw until lights show successful calibration.
+ check values in the app (should be 1400 - 1500)
Thats it. Never had any issues about that and since the app has the check IMU Button i don´t do the calibration before every flight. Compass is easy and takes 30 secs, so should be done before each flight just for safety reasons - but if the values are in it´s range, there is no need to calibrate (DJI recommends compass cal. after bigger change in position after your last flight position).
Cheers, Christian |
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