Copter 4.4 cannot find compass 3 (while 3.6.12 has no problem?)

ArduCopter Copter 4.4
1

Hi,

In MissionPlanner, with firmware Copter 3.6.12 shows my drone has 3 compass:

compass2
compass2821×552 65.1 KB

But with Copter 4.4, it says cannot find compass 3 (SPI, LSM303D):

compass
compass890×241 42.9 KB

I’m just wondering if this is a bug? or how I can solve it?

Thanks.

2

That first screenshot only shows two compasses, although there is provision for making selections for three compasses.

3

Hi @mw66,

As mentioned on the issue AP keeps the “mission” compass around so that if it re-appears the user doesn’t have to re-do the calibration. If the “Remove Missing” button is pushed it’ll disappear.