I have mounted my APM 2.5 (official version) along with the £DR telemetry and UBLOX GPS.
The setup has all been done and it will alt hold fairly well.
When i go to do a mission it appears to go in the wrong direction… im guessing that the compass or gps setup is backwards.
arrow on both the APM and the Compass/GPS are facing front.
I have the rotation setting (forget the exact name) set to 0 degrees (although when i select the GPS/Compass radio button it defaults to 180degrees)
So I think i need to set the orientation to 180deg. but want to check with the experts.
On a side note, when i set this all up my car/rover to check it all out the rover needed 0 degrees to work properly.
@ArduSteve,
A genuine 3DR GPS/Compass has the magnetometer IC mounted on the underside of the module and therefore requires the 180 deg inversion.
If you GPS/Compass module is a clone, it could be mounted anywhere and you will have to experiment with the correct orientation.
Regards,
TCIII GM
You should also check that it correctly indicates North/South, East/West (only really need to check one of each) when the vehicle is pointed in those directions, with some allowance for declination. This will confirm the orientation.