At 11:13 or 2:22 of this video or 0:09 of this second video the drone itself is on flat surface but the flight controller itself must have been placed in tilted position (not intentionally) on frame a little so the Pitch and Roll angles are not perfectly 0 degrees. When the PID makes corrections to make FC at 0 degree level for hovering over, the drone itself will be tilted so the drone will go in x or y direction. Should we mount FC with this manner to the drone's frame (in a way we read exactly 0 degrees) or are we making correction to these things during flyting with remote controller to make it stable.
Or is there a code trick in flight controller like taking the start angles as flat degrees so -2 for example is flat level for it.
I hope i am clear. Any help is appriciated.