Hi
I have A2 system on TBS Discovery, with iosd mk2
Compass calibration apeared to work OK, no error messages and LED colours were all correct
However on lift off, height about 4 metres it started to yaw on the Z axis, got faster and crashed before I could regain control
Motor directions are correct, prop placement is correct
Below are my calibration figures, done on mobile app.
Do these numbers look good? compass Z seems very high.
I am at Lat. 52.504775  Long. -1.446813

This system has flown before but grounded for some months now.

calibration results

TBS Discovery

Any help gratefully received
Cheers
Steve

Hi Steve, please connect A2 to DJI A2 Assistant and calibrate the IMU.
Please pay attention to the mounting location, fill in the coordinate of IMU/GPS based of X, Y and Z axis, the GPS label should face the sky and the arrow point to the nose direction of the aircraft.

DJI Mindy Posted at 2018-5-29 00:00
Hi Steve, please connect A2 to DJI A2 Assistant and calibrate the IMU.
Please pay attention to the mounting location, fill in the coordinate of IMU/GPS based of X, Y and Z axis, the GPS label should face the sky and the arrow point to the nose direction of the aircraft.[view_image]

HI @DJI Mindy

Thanks for your prompt reply.
I've sorted the problem and I feel rather foolish  
Loose prop nut !!
It flies now good as it used too

Many thanks
Steve

stevietee10 Posted at 2018-5-30 00:04
HI @DJI Mindy

Thanks for your prompt reply.

Glad to know the issue has been sorted out, please let us know if there is any other issue, enjoy flying.