Hi All,
Well, I had my first problem with the mavic a few days ago. I've made about 30 flights so far without incident, it's a fantastic machine. I was flying around a lake far from power lines and using tap-fly as sort on an autopilot so I could concentrate on camera settings. I began getting yaw drift, to the point where I was almost flying sideways, as I could tell from the video feed. The rest of this story is told after reviewing the flight log many times. I then began heading back toward my home point, at which time I got the message "weak GPS signal". It had been showing 18 satellites, and still did, although the strength bars went down to 2 and turned red. The aircraft went into ATTI mode, as it should have, but began flying backwards and drifting sideways while maintaining an altitude of 150 feet. I made sure tap-fly mode was off. When I saw that the mavic was pointed in my general direction I pushed the right stick forward 100 % and got it back above me. I let go of both sticks and it began "toilet bowling", moving in circles above me without any input. I saw that the satellite strength bars were increasing and soon I had control back and was able to land.
I know that the yaw drift was probably from a bad compass calibration. I had just calibrated it at the park and there were frisbee golf goals not too far away, they may have caused a problem so my bad on that. However, after reading countless posts about the sudden loss of gps, and my own experience, I think the mavic does have a flaw. I think the gps unit is faulty and prone to sudden gps loss. I can understand going from 18 satellites to 10, but going from 18 to 0 in an instant in open country has got to be the gps unit. I don't know how to upload my flight log, if anyone knows how, let me know.
Well, I had my first problem with the mavic a few days ago. I've made about 30 flights so far without incident, it's a fantastic machine. I was flying around a lake far from power lines and using tap-fly as sort on an autopilot so I could concentrate on camera settings. I began getting yaw drift, to the point where I was almost flying sideways, as I could tell from the video feed. The rest of this story is told after reviewing the flight log many times. I then began heading back toward my home point, at which time I got the message "weak GPS signal". It had been showing 18 satellites, and still did, although the strength bars went down to 2 and turned red. The aircraft went into ATTI mode, as it should have, but began flying backwards and drifting sideways while maintaining an altitude of 150 feet. I made sure tap-fly mode was off. When I saw that the mavic was pointed in my general direction I pushed the right stick forward 100 % and got it back above me. I let go of both sticks and it began "toilet bowling", moving in circles above me without any input. I saw that the satellite strength bars were increasing and soon I had control back and was able to land.
I know that the yaw drift was probably from a bad compass calibration. I had just calibrated it at the park and there were frisbee golf goals not too far away, they may have caused a problem so my bad on that. However, after reading countless posts about the sudden loss of gps, and my own experience, I think the mavic does have a flaw. I think the gps unit is faulty and prone to sudden gps loss. I can understand going from 18 satellites to 10, but going from 18 to 0 in an instant in open country has got to be the gps unit. I don't know how to upload my flight log, if anyone knows how, let me know.
