went to fly today and set my p3p down on my tablet protector/cover (which I take off to fit the tablet to the RC holder) and got the message, compass needs calibration, so I held it up and done as instructed, compass calibrated, so put it down on the pad and on the screen up comes the same message, needs calabration, done it again with the same result,moving the sticks down and to the center, nothing happened so I moved down the field about 30 mts still got the same message, totally confused then thought yes this happened last week at a different site, just about to go home but held it up in the air pushed the sticks down and center it fired up, yes I got the message, it was the tablet cover/protector that was causing the problem, so then I set the p3p up on my hard pack, 100% perfect, had a good flight.
so now I realise that the protector/cover must have some metal inside the plastic.
lesson learned
so now I realise that the protector/cover must have some metal inside the plastic.
lesson learned