oh,i can't start to hover

[neoneo1716]

i found when i connect my quadrotor in the gui ,it frequently present lost the State Estimate cause the fail to fly(The propeller is rotating.). And i find when i run the Vbat Thrust Calibration,i dont know how to in hover?
Is this a series of failures that I did not use laird modules?

i want to konw how to use the laird

[Miss-yins]

Oh, I also encountered such a problem.
Could you give me some tip that how to Thrust calibration？
And i also did not use the laird modules.
Thanks a lot.

[neoneo1716]

i want to know how to set up the mocap Coordinate Systems. i found it can't to hover, it