Drone Won't fly, drone shaking while taking off and crashing after that

ArduCopter
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1

Help, me and my friend made a quad X drone with esc Skywalker 60A, motor sunnysky 400 kv and pixhawk 2.4.8
The power distribution board using a mateksys
The problem is always two of the motor or one motor always didnt same rpm while we test it and Can’t fly, if it could it would only cause a fall and potential thrust lost (2)

Thanks
Sorry for my bad English

2

Hello Nada,

check the order of you motors using Mission planner Motor test.

3

That’s correct and proper, number one is counterclockwise, number 2 is clockwise, number 3 is counterclockwise, number 4 is clockwise.

4

The motor order is A B C D, not 1 2 3 4

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5

Yeah, i mean that
Not 1234, but ABCD

6

If you are sure the basics are correct but still can not find the issue, then is time to solve the problem methodically

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