Cheap APM 2.8 from ebay. Heli class 500 flybarred. Traditional helicopter firmware 3.2.1
My APM 2.8 installed for traditional helicopter, the swash plate servo has reverse action when i changed the mode from stabilize to alt hold or loiter mode.
When on bench. When the heli tilted to the left, the swash plate automatically move to the right.
But when i changed to alt hold or loiter mode. Swash plate action was reverse, when i tilted the heli to the left, swash plate also move to left (the correct action should move to the right)
I also could not operate the swash plate servo from TX during alt hold and loiter mode.
This problem caused my Heli fly away during this mode (alt hold/loiter).
I already reset to default and upgade the firmware to beta firmware but the problem still exist.
I also already buy new APM board but the problem not solved yet