Re: [Paparazzi-devel] Have anyone successfully combine paparazzi uav with the qgroundcontrol ?

[Felix Ruess]

Hi,

You can load the mavlink module to use most basic functionalities of QGroundControl, but that does not help you in any way with your magnetometer calibration!

You should follow Prof. Warmers suggestions and do that test. If current is the problem, you can also try to calibrate for that:
https://wiki.paparazziuav.org/wiki/ImuCalibration#Calibrating_for_Current

I also started writing a simple mag calibration script that reads the IMU_MAG_RAW data live and directly displays the data in 3D while recording it:
https://github.com/flixr/paparazzi/blob/34e34e0b25d2fcf4c4e0c135079bbbb59a31f023/sw/tools/calibration/calib_mag_live.py

When you have enough points covering good portions of the sphere, close the plot window and it will continue and output the calibration.

Haven't had time to improve the script further yet..

Cheers, Felix

On Mon, Mar 14, 2016 at 7:49 PM, Prof. Dr.-Ing. Heinrich Warmers <address@hidden> wrote:

Hi,
sometimes the motor current wires  or  the battery
wires  are to near to the magnet sensor (keep it 6-10cm away).
If you use a switch wire the plus and minus wire to the switch.
Twist all wires.
Often it helps to use a double side PCB for current allocation.

Make this brutal test:
Hold the copter on the ground  and give  full  throttle to all motors.
Under this condition the magnetic direction  must have not more then 5°declination.
Sometimes it is a hard way to get good results.

Am 14.03.2016 09:38, schrieb wang siqi:

Hi all,
     Does anyone apply the qgroundcontrol on the paparazzi uav successfully?
If so, could you tell my the way ? (the imu calibration is too difficult for
me to use, I have tried several times to calibrate the magnetometer,
however, my quadrotor still has the tendency to rotate by itself when taking
off...) Any help would be appreciated!



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