I’m testing a new custom build quad and am getting uncommanded pitch up when I apply power on the ground. It seems that I must be getting some interference due to the battery position or a hardware problem??? Here is a graph of pitch vs current
The setup is a custom quad with a Kore Board, Herelink and an Orange Cube running Arducopter V4.0.7. A 22,000 mAh battery is mounted on top of the frame and about 50mm above the cube. The internal compass has been disabled and a Here3 GPS/Compass is the primary compass. I have done a Compass/Motor Calibration and getting an interference of <5%.
The motors are 100% mounted in the correct order and are spinning the correct way!
The log is of the quad sitting on the ground and power applied (twice) then reduced. The quad pitches up and would topple over if further power was applied.
Any help would be appreciated!!!