KK 2.1.5 flight control board auto disarms.

[Aman kumar singh]

Whenever i try to arm the kk 2.1.5 flight control board by moving down the throttle and then towards the right it says armed. But after that when I try to give a little throttle the kk board auto-disarms itself. What could be the reason?
Wiring of all the receiver, board and motors are in the correct manner, throttle end points are also between the range of 0-100.

 

[Naveen]

Bro even I have the same problem if you find the solution to this problem plzzzz tell me tooo

 

[Naveen]

Bro did you find solution

 

[Aman kumar singh]

Bro did you find solution

No bro. I am onto it.

 

[Jackson]

Maybe some help here.

 

[Aman kumar singh]

From this i think you'll get some idea about my problem.

 

[holtneil]

Hi mate have you got the transmitter set up as a plane (aero)

 

[Jackson]

With the i6 it's called Airplane.

 

[Naveen]

Jackson .. I have the same problem too when I increase the throttle with out props motors spin correctly even at full throttle but when I increase the throttle with props.on motor kk board suddenly disarm at 25% throttle so plz help me

 

[holtneil]

That sounds like a voltage problem try and power the kk on its own to see if it stops it
the motors with prop will pull a lot more amps
Can you power the kk from a bec not the one built in the esc
Make sure the esc is high enough to take the amps this may be cutting the bec out shutting the kk down in to its failsafe mode

 

[Naveen]

Thanks for the reply bro iam using 30 amps ..by the way what is bec srry bro I am totally new to this hobby

 

[holtneil]

The bec is the battery eliminator circuit some escs have them afro don't have them
It gives out 5 volt to power receiver or fcb this may be failing and cutting out the kk
You may be able to test by powering one motor and prop at a time start with motor and prop 1 then if all OK add motor 2 if you get to motor 4 and the kk cuts out then it is a power problem 30 amp esc should be powerful enough . this is what makes me think the bec is not man enough or has a fault
You can swap the esc on motor 1 to another motor as only the bec in esc to motor 1 powers the kk so you should pull the red wire on the other 3 escs

 

[Aman kumar singh]

No bro. I am onto it.

Bro, i found the solution for my problem. It was the battery which i was using. The battery was not able to supply sufficient current. So my kk board was disarming itself. Bldc motors are hungry for current.

 

[Naveen]

What battery food you use

 

[Naveen]

Did

 

[Naveen]

Ya I figured out too my motors need 20a but my battery was supplying only 16a for each motor thanks any way

 

[somasekhar]

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 ?)

 

[holtneil]

Hi yes you can put 12 volt direct to the kk board

 

[somasekhar]

Thank you brother

 

[somasekhar]

One doubt can I connect 14.4 volt direct to kk2.1.5 controller?