I have an arducopter 2 and it fly stable but when I activate the "Altitude Hold" mode (i mount the altitude sensor hardware) then it goes (spin) up and yaw counter clock wise... I must deactivate it because i test it in house and i fear that it will crash. I don't know why but when I change the firmware to 2.0.45 the altitude hold was working, but not now...
How can i do?
p.s.: sorry for my bad english