I am trying HIL simulation with QGroundControl 2.9.6 and X-plane 10 demo. I followed the steps here: https://pixhawk.org/users/hil
and used the HILStar model.
All the connections and setup seems just fine. However, when I arm under the mission mode after I set a few waypoints, the airplane just sticks to the ground and does not move, although the QGC shows that the throttle is up to 100%. I also tried manual control using joystick and the problem is just the same.