by Max » Mon Mar 02, 2015 9:51 pm
I'd start with a standard quad X mix, this should get you very close. Then examine the log -- MOT_PITCH, MOT_ROLL, MOT_YAW, and the MOTOR_x values. Those will clearly show if one side/motor is working harder than the others. Keep in mind that there may be other reasons for an imbalance -- props and motors can differ from the factory or be slightly misaligned on the frame, for instance, or the CoG might be off.
I'd be surprised if it's really "diving" because of motor mix imbalance. Not even sure what that means... it's tilting forward when it should be level? The controller would sense that and reduce power to the rear motors and increase power to the fronts. Or do you mean it's loosing altitude, or both?
To troubleshoot something like that it would be useful to post logs (zipped) and/or screen grabs of plotted relevant values.
All this is assuming the AQ is in the center of sphere formed by the motors. The controller needs to be in the center of rotation.
-Max