This is a compass question for 4.0.x firmware.

ArduCopter Copter 4.0
1

Hello everybody.
I have a problem with 4.0.x ver.
You won’t find px4 v3 on 4.0.x ver.
My FC has been changed to fmu v2.
This problem does not recognize the compass of the gps here.

2

Good day, what kind of FC are you using?

3

Thank you for answer. Use pixhawk1

4

What is your compass_typemask parameter? Maybe it is set to ignore the compass. Set compass_typemask = 0 to enable all compass devices.

2 Likes
5

Thank you for answer.
compass_typemask is 0.
The problem has been fixed in 4.0.3.

1 Like