Problem whit Multiwii pro and turnigy 9x


Hello everyone

I'm building my first quadcopter
Frame 700 mm
Motor sunnysky
ESC SimonK
FC MultiWii pro w gps
Tx Turnigy 9x

I loaded the program using arduino on flight controller MultiWii defining the correct values (looking at several guides on the web).
I connected the receiver on the correct pins of the FC but I can not operate the quad.
It seems that the transmitter does not communicate with the FC
The Esc are calibrated, the receiver works (I tried it with the servo motors).
I searched on the web the possible problem but i didn't' find a lot.

Can anyone help me?
Thanks a lot
Andrea

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