Yesterday I tried to autotune my drone, it tune for 25mins to the point my drone battery completely drained. The tuning process is taking too long especially you doing it with altihold. You need to constantly adjust the position.
I just wonder if it is possible to tune with a tethered power line. If so I can do it indoor, limits its movement and yet run as long as possible.
I saw there are tuning racks but its more for small drone. Impossible to be used for a medium sized drone.
Or is it possible to tune again from where it stopped after changing a fresh sets of battery.
Provide a .bin log of normal flight, we might be able to improve the tuning before Autotune so it works quicker.
Also did you start with just one axis?
As Shawn said, just do one axis at a time. Then you can recharge the battery and proceed to next axis. In that way you won’t run out of battery during auto-tune.