Saturday Jan 18, 2014 was my first opportunity to fly my Phantom 2 Vision. I checked the IMU calibration and it was bang on to the required specs. Before flight, I did a compass calibration. When I lifted off to about 10 feet the Phantom hovered stable in place. However, after I made the Phantom move forward, about 5 feet to again hover, the hover was erratic where the phantom flew in circles of an ever increasing radius. I had to reduce the altitude to about 7 feet so I could grab the Phantom by hand as it flew by. I re-calibrated the compass several times only to have the same unstable flight result with each attempt.
For your information my flight attempts where at a ball field, free from power lines on a calm day at about 10c/50F in overcast skies. The Phantom did have a flashing green to mark my home point, and my iPhone showed the satellite count fluctuating between 6 and 7 satellites.
After I got home, I rechecked the calibration on the Mac Assistant Software, the IMU values where as follows:
Gyro Mod = .6
Acc Mode = 1.00
Compass (raw) =1650
What could cause this? What can be done to correct this? Could it be possible EMC problems? etc…
Thanks,
Dave
For your information my flight attempts where at a ball field, free from power lines on a calm day at about 10c/50F in overcast skies. The Phantom did have a flashing green to mark my home point, and my iPhone showed the satellite count fluctuating between 6 and 7 satellites.
After I got home, I rechecked the calibration on the Mac Assistant Software, the IMU values where as follows:
Gyro Mod = .6
Acc Mode = 1.00
Compass (raw) =1650
What could cause this? What can be done to correct this? Could it be possible EMC problems? etc…
Thanks,
Dave