I have setup a quad like this:
APM 2.6 fw 3.2.1
3DR 915Mhz Radio
3DR Power module
HJ 450 Frame
Also use APM 2.0 RC1/RC3
I flew it normally for a time, I cant figure out why at one moment it started to behave really odd, I think it was when I was testing the python interface for MAVlink, it I don't know it for sure.
The strange behaviour is the following:
In stabilize mode, the quad is stationary and I arm it, after that I increase the throttle (I don't touch anything else on the RC controller), the quad lifts 3cm and then starts to revolve in its own axis (like a frisby), it's like it's being commanded to yaw (it might rotate CW or CCW).
I'm really puzzled, I calibrated the compass, radio, I disabled the compass altogether with the same result, I rearranged the cables so the GPS it's alone at front and the radios, and power converters are in the back, with no positive results.
Two more things:
- I couldn't calibrate the APM 2.6 on board compass
- I have one propeller with a small crack but I flew like that before (I'm replacing it today).
I'll appreciate any help.