I’ve started setting up my mRo Pixracer R15 with mRo SAM GPS unit, on the bench, out of the model, but am struggling with calibrating the magnetometers using Mission Planner. The R15 is set up as a heli, with Arductopter heli v4.1.0. According to the manufacturer’s data the R15 has “MPU-9250 3-axis accelerometer/gyroscope/magnetometer” and “ST LIS3MDL magnetometer”, and the GPS has an IST3806 magnetometer.
My first query is, the MP screen shows LIS3MDL mag and AK8963 mag; the LIS3MDL is clearly the one on the R15 board, but is the AK8963 the one on the GPS, or is it part of the MPU-9250? MP won’t allow me to check its ‘External’ box.
My second query is, the attached screen shot shows how far calibration got after 30 minutes outdoors away from any magnetism. I don’t remember it taking this long with my Pixhawk 2.4.8. At this rate it’s going to take at least 5 hours to complete (and run down my laptop battery!). Is this normal?