Above is a video demonstrating a feature of the new DJI Naza GPS / Compass module called Intelligent Orientation Control Course Lock. This feature is often called “carefree” mode on other controllers. It allows the pilot to maneuver the copter without worrying about its orientation. It is a neat feature. I can spin my quadcopter around while steering it around in any direction at the same time.
I control this feature by using a switch that I setup on my transmitter to turn it on and off. Before taking off, this switch has to be flipped a few times to set the initial orientation of the copter. A green led flashes when it is succesfully recorded. After that, it is ready to fly in course lock mode.
Course lock steers the copter relative to its initial starting orientation using the Naza’s compass. There is another Intelligent Orientation Control option called Home Lock that uses the Naza’s GPS. With Home Lock the steering is relative to the initial take-off location.