i have made quadcopter with arduino uno and gy_80 sensor i have ppm 4channel radio controller and it is not sum every single channel is ppm . i tried to use your program for this but receiver dont work when i want it to fly .....
" when i connect my ppm receiver to single motor with esc radio control work perfectly but when i use it as quadcopter with code does not work
.........
help me plz . help 
faramarz.zareian@gmail.com