Please add magnetometer calibration by RC, (without MP)

[AndKe]

REASON:
Mission planner is a pain when it comes to it's lack of proper multiplatform support.
Calibrating compass is not working, apparently due to some undocumented, but required .NET parameter.
ArduPilot/MissionPlanner#208 , look how old that bug is...

SUGGESTION:
Anyway: when travelling, calibrating compass is important, and should be able to be done without MP.
I suggest to do it like another known vendor of multirotors:

-while disarmed:
1.- Push and hold throttle stick in upper left corner(mode2) for 2 sec. optionally, while at the same time holding pitch/roll stick down.
2.- now user got 30 sec to calibrate.

[billbonney]

You only need to so this once, and then it's set, there's no need AFIAU to do this at every location you fly. You can use APM Planner 2.0 https://github.com/diydrones/apm_planner to also do the compass calibration using OSX and Linux.

The challenge for adding it to the flight code is that the implementation uses a stats math library to calculate the 'least squares' of all the readings. If somebody wrote that function in plain c it would be easy add to the flight controllers with more memory

[rmackay9]

Yes, I think Bill has it right. If the real issue is the mission planner's non-cross-platform support then let's fix that problem (with APM Planner) rather than pushing the load onto the flight controller. I'm closing this issue, hope that's ok.

[AndKe]

Yes, I asked while thinking the calibration itself were done onboard. So I must agree that saving the EEPROM have higher priority.