Hi All, I have an URGENT issue so if there are any guys who are more technologically gifted than me, I'd be keen for your help. I am an archaeologist and I am flying over to take photos of a few sites in Greece in A FEW DAYS. I have a custom mount(made out of perspex etc) that I put small canon cameras into as they are more suited to archaeology. Recently, I have had a few crashes, two whilst flying normally and one whilst using a ground station. What I have done is plugged my P2 into comp and used the compass calibration to check the numbers. When I have nothing on the P2 I get this for my compass-X: 311, Y:137 ,Z: -420 . Mod:943 With mount- X: 134, Y:166 ,Z: -422 . Mod:1238.5 With plastic Canon A2200 X: 257, Y:175 ,Z: --450 . Mod: 1137.1 But this is my issue I have a Canon S110 which gives off X: 308, Y:96 ,Z: -550(-600 on another test) . Mod:1325 Obviously, the numbers jump around- but its the Z being over -500 that I think is causing me issues. Today, I had it in the air and it just started to descend(I managed to catch it mid air :lol: :lol: ). The first accident I had I remember I was climbing vertically and it stopped and descended then spun out slightly. My third time it was hovering and then dropped. It's weird as I flew with this camera on for months when I first got the P2 in January with no issues. This is something that has started occuring since march/april but I haven't flown much. I have now pieced together the fact that all three crashes I have had has had this Canon S110 attached. It could have two issues- the first is that the camera has a full metal body where as the other cameras I have tested are plastic bodied(like my A2200). In fact if I turn on the quad and measure its compass stats, it jumps even when the camera is off- showing its not a electrical interference. I also wondered if it may be that it has a wifi chip but it gives big readings when turned off. I suppose my question is- do you think it is likely this is the cause of my crashes? The fact that the crashes generally occur going up and down verticalluy(which I imagine is Z), seems to show a common cause. I suppose my other question is- if I calibrate(basic and advanced) it still gives me a very low -50o to -620 number, so I imagine that even with calibration, I will still get errors? Or do you think it may be an issue with Quad in general? I just need to know as if my quad is dead- I need to cancel my work. :-( If anyone can help shed some light on this it would be amazing as it means I have 12 hours(from now) to find a new camera to attach that doesn't make it crash!