i just builded a new copter, with a Pixfalcon (soft v. 3.3.2 Pixhawk clone). I does very well. but one thing is not working well: Alt hold does not really hold the altitude - at least whenever the copter is moving. It is really strange. when i put it in alt hold or pos hold the copter stays at the place like nailed. Whenever i fly the copter somewhere else, it looses altitude as its not in alt/pos hold.
What can be the reason for such a behavior?
Any Help would be just awesome!!
I added 2 log files, one from yesterday, doing a autotune, one from today flying a little auto-mission (3 waypoints).
in logfile#1 (autotune) you can clearly see that whenever i brought the copter back to me it lost a lot of altitude. when the copter was doing his autotune-dancemoves, it kept the altitude perfectly...
logfile 2 is the same result: the copter is in auto mode, starts to approach a waypoint and on the way there it looses a lot of altitude. when it is right under the wayoint it climbes up to the point and does the same thing again: