No, IMU cal is only required if there is suspicion that the craft needs it, like it's drifting when in attitude mode, but not because of wind or that it's constantly fighting to maintain it's position when in P-GPS and there is no wind. The IMU cal needs to be done on a level surface that does not have any magnetic interference, per Tahoe Ed. If after the cal, it tells you that it needs it again, consider changing location. Temperature seems to be a factor, as the IMU heats up rapidly during calibration. It's best if the craft is in cool temps before starting the cal.So I just checked my IMU again after a few flights and it says calibration needed again so I did it advanced only goes to 97% then it runs the basic cal on its own and completes . but I don't get it why so often? is this something we are going to have to do every flight now ? confused
Just to confirm, when you say that it needs cal again after a few flights, are you getting a warning before flight, or are you going to "sensors" and selecting "Check IMU." If the latter, you don't need to do that. That is being overly cautious. If it's behaving, then "It's All Good." Compass cal, that you should do every time you change flying location.IMU cal is being done on a completely flat glass top even checked with a level. over a carpeted surface i have tried in other locations flew it today and it flew just fine or it seemed to. i guess I'm just concerned that after a few fights it says it needs cal again. seems to me its smart enough to know when it should or not ? after I redo the calibration it says no cal needed but after a few flights and after sitting for hours and I check it it says cal needed. I guess I'm just begin extra cautious.