I made some updates to the SVN for 2.6 and if anyone runs into trouble, please post it here.
I added more code comments as well as brought back the GPS simulator. If you set GPS_PROTOCOL to 5 in your header the simulator will kick in while the plane is in AUTO.
Your throttle adjusts the speed of the plane in the sim while it attempts to hit waypoints. The telemetry will output to the Ardupilot GCS. If you connect Google maps, you'll see that… Continue