I have been flying a 900mm size Y6 with a 4s power system for some time. Initially I had mounted the Pixhawk on a plate set on 30mm standoffs from the top plate of the frame while the PDB is in between the top and bottom plates and the battery is on the bottom of the frame. This gave me really good performance in terms of the compass. I ran a compass_mot test and the interference was below 30%.
Now I have upgraded to a 6s setup and am now seeing this compass variance warning during flight and the copter goes crazy in any GPS flight mode, although flying in stabilize is really good. I have since run a compass_mot test and the interference is above 60%...
Im not sure how much further I can move the Pixhawk away from the power system, so can I just turn off the internal compass? I know that in AC 3.3 you can set compass_use2 to 0 for determining heading, does this disable the internal compass?
Any recommendations are much appreciated.