I was recently treated to the Parrot AR Drone for my birthday by my wife. I have flown RC planes before but this is my first quadcopter and I’m still getting to grips with the FreeFlight app. I have the drone in ‘flat trim’ mode, but I find it often drifts quite badly in one direction – and not always the same one! I’ve tried compensating with the manual trim settings but I have to adjust the values on each flight. Is this a bug or is my drone faulty? Alastair Crewkerne
I haven’t played with the AR Drone myself, but from the manual and the FAQ at ardrone2.parrot.com/faq, I think you might be enabling Flat Trim while your quadcopter is sitting on a slope. The Flat Trim mode zeroes the trim values for the onboard gyroscopes, assuming the drone is sitting on a level surface. If you’re on the side of a hill, you are essentially programming in a control bias that will try to move the drone in whatever direction was downhill when you enabled Flat Trim. To fix this, put the drone on a horizontal surface, open the FreeFlight app and tap the Flat Trim button. You should be able to leave the Trim Select settings on Auto and it will still fly level.
Drones like the Parrot BeBop let you control them through your iPad.