Hi all-
Need help. I still don't have my quad up and flying and I'm trying not to get frustrated. During initial tuning encountered many problems. I realized that I had not done the compassmot correctly the first time and needed to do that. After performing the compassmot (vs current) I found I had an interference of 531% !!!
I tore down and rebuild my quad, placing the PDB in between the 2 glass fiber plates of the X525, and moved the ESCs to the underside as well. Performing the compassmot (vs current) again I improved to 220%, a big improvement but still waaay too much. All wires are short as can be and all are twisted.
My questions-
1. I have the APM 2.5 w/ 3DR power module. The listing on 3dr makes it sound like I can't use a GPS with external mag since it has on onboard mag. Is this true? Can I use an external mag?
2. Are there any external mag's out there that will work for me that don't include GPS? I already have a GPS, so if I can buy a decent seperate mag for cheaper, I might.
3. Is the magnetometer used at all when flying in Stab mode or is it just for Auto modes?
Thanks for your help- I'm having a hell of a time trying to get this quad flying and tuned, especially on my budget and time constraints.
Jim
X525 frame
APM 2.5 w/ power module, mediatek GPS, running v3.0.1
Turnigy SK3 2826 motors
HK 20a ESCs
3100 3s battery
Replies
See http://copter.ardupilot.com/wiki/common-external-magnetometer-for-i...
See http://copter.ardupilot.com/wiki/common-installing-3dr-ublox-gps-co... and see the APM2.5 if installing on that board
1) Yes, you can use the GPS with external mag with APM 2.5. Instructions are in the manual here.
2) Yes, you can use this external stand-alone mag. Instructions in the manual here.
3) It is used in all modes.