Is there only one method to do compas calibration or there could be other methods than the one with the buzzer ?
I realize that I have issues with models which are quite low to the ground and no real issues with large machines which are quite high and which were calibrated with the assistance of one of my sons, at 1,5m above ground. I know that there is a fair amount of metal in the concrete of the space where I take off, land and set up my toys.
I am going to try again tomorrow to do compas calibration while making sure that my copter is at least at one meter above ground, the orientation really full South / East when required and my cellphone stored away.
I have two machines to run this test now on.