Hi guys, I have a customer with strange level issue on APM 2.5... RMA or there is a fix for this?
He purchased two Arducopter kits . One flies flawlessly but there is a problem with the other.
I need your help to see what you can find in the logs...
Here is what he experienced: (I think they are on latest firmware 2.7.3 but not sure)
I can fly it and it is pretty stable, but I have trouble calibrating the level. If I calibrate the level using the Mission planner, the artificial horizon becomes straight on the display as expected. However, if I perform the auto-trim function, the level becomes out of calibration againonce I land. If I recalibrate the level, the auto-trim is lost again.
I logged a short flight I did this morning to illustrate the problem. The log is attached to this message.
Arducopter is immobile on the ground at the beginning of the log
15:52:24 – Arducopter level performed, Arducopter still on the ground
15:52:32 – Arducopter armed, I keep the Yaw level to the right to start in-flight calibration Red led blinks
15:52:45 – The Arducopter is in flight, it is kept almost still in the air until the end of the flight. As the flight progresses, although the Arducopter is still in the air the Artificial horizon slowly drifts and shows that the Arducopter is far from level.
15:53:13 – End of the flight, The red led stopped blinking, indicated that the calibration is done before landing
After that, the Arducopter is on straight, motionless the ground but the level is now completely off calibration, the artificial horizon even continues to move.
Again, I purchased two identical Arducopter 3DR kits and only one is doing this, the other works flawlessly and the assembly is identical.
Note 1: I am flying indoors in a large garage, without GPS fix.
Note 2: There was also a GPS communication problem with this board hat was fixed by resoldering the GPS header.
Any help would be appreciated.