I'm using kk2.1.5 flightcontroller quadcopter, when i give throttle to my quadcopter first motor sping with high speed other three motors are at same speed what's the reason and why?,what can i do now? can anybody give me a solution.
bro same problem as above i'm changed the esc from one motor to another motor and i removed the 3 escs red wires still its auto disarming in kk2.1.5 flight control.(can i connect direct 5v input to the flight controller ?)