We are in the process of fine tuning a large octo and a small tricopter, both using Arducopter 2.8.1. We have challenges with the loiter and RTL mode. In one flight loiter can be perfect, and then, after flying around, the multicopters don,t want to hold their position, just wandering off. Then, land, repower, take off, and loiter works again. The same is happening in RTL.
GPS 3D FIX with 9 sats is veryfied.
Anyone knows why we can't get a good loiter or RTL everytime we enter the modes?
Pål & Martin