VTOL 4+1. vertical 4 motor isn't spingning. it seem like no signal come

[lae_lae]

Hi everyone
I am builing my first VTOL 4+1 with CUAV X7
and i have a problem with calibrating 4 vertical motor. 4 motor no spin but the front motor is nomorlly

who might help me solve this please

[makeflyeasy]

Check if the CUBE is tight, it may be a problem with the connector.

[lae_lae]

Thanks
however all servo and front motor are working fine
only 4 vertical motors dont work

[makeflyeasy]

Your connections and configuration are correct.
You can calibrate the ESC separately with the receiver to see if the motor can work.

[lae_lae]

yeah when calibrate ESC separately with receiver channel 3 is working . but when connect the board it doesn’t work

[lae_lae]

I try to calibrate from Mission planner but it pop up Set param. Please ensure your version is AC3.3+