flipping

Hey guys, This is my first build and having a strange "flipping on takeoff" scenario here. Have tried every possible fix mentioned out there in the forums? Does the direction marking on the APM really matters... I have installed the apm in PLUS frame type (because the shock dampning plate only...

Hello All, I am newb here, bought RTF QAV 250 knock off, update firmware and settings - not flying. My quad was flying but very sloppy so decided to install open pilot and update firmware and settings. Now the Quad will run all the motors but does not take off, when I give the full throttle, it...