david.p.mann
Second Officer
Flight distance : 18669501 ft
United States
Offline
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Don't think DJI corporate has an "official" policy on IMU calibration. At least one DJI forum poster - DJI-Ken - a good guy, who is very knowledgeable and helpful, recommends calibrating the IMU after every firmware update. I resisted at first on my P4, because it was working fine with very level camera horizons and rock stable hovers. However, after one rough flight with unplanned acrobatics (another story), I decided I better calibrate IMUs in P4 before flying again.
I was pleased to find that I did NOT have to chill the P4 before calibrating the IMUs. On the P3Pro, if you recall, it is necessary to chill the aircraft in your refrigerator or by holding it in front of car's A/C vents prior to IMU calibration to avoid substantial/annoying "IMU is warming up" delays on subsequent first flights of the day following IMU calibration.
Just be sure to place your P4 on a level surface (use a bubble level to make sure) before beginning the IMU calibration. It's pretty painless and there is no obnoxious beeping while the calibration proceeds. Took about 5 minutes, if I recall correctly. Message said it might take 10 minutes.
I'll probably follow DJI-Ken's advice and calibrate IMUs after every firmware update. |
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