I set up my erle quad copter and downloaded apm to my autopilot (erle brain2).
Every thing went fine except that I can't control YAW.
The throttle, roll, pitch control works perfectly fine and I tunned the PID gains through apm planner.
However, even if i move controller yaw stick, the quad copter doesn't show any response neither it stabilizes yaw itself.
It keeps on rotating clock wise direction until I disarm the copter. The controller signals are transmitted perfectly as I checked through apm planner 2.
Is there any solution I can adapt?
Thank you for reading it.