Hi all, we're using a 3DRobotics RTF X8 copter with APM 2.6 (firmware v3.1), Mission Planner 1.2.9.2, and a Spektrum Dx7s controller. After many days ("Ready to Fly"???) we've finally managed to get our copter off the ground and flying fine in Stabilize mode. We tried Auto mode for the first time today and are having a new problem. The copter seems to be totally out of control when we flip it from Stabilize to Auto -- it's completely unpredictable which direction it will fly (though it's often at 90 degrees to the programmed path). We tried two very simple flights, which involved three waypoints and a total travel distance of about 100m. The first time we ran autopilot, the general shape was correct but it cut the corners completely and never managed to hit the WPs. The next few times, the copter went off in completely the wrong direction and we had to retrieve it in Stabilize mode.
Attached are two logs. The 01-26 file is from our most recent flight, during which the copter veered far to the left almost immediately and then suffered a battery failsafe despite having around 80% power. The 01-13 is from our second most recent flight, during which the copter flew straight for about 10m and then veered far to the left (note that on an earlier flight, it had veered to the right). We managed to regain control and land it successfully. (We're not super proficient yet at interpreting these files, so I BELIEVE these files correspond to those flights, although we think each of the logs might contain more than one flight.) We're afraid this may be a compass issue but aren't sure how to isolate it, or how to fix it.
I would very much appreciate any insight into this issue!
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