Hi. I am first time make drone I don’t no what is error. I have try motor test indugial motor 1,motor 2,motor 3,motor 4 try motor work but all motor try to motor 1 only work another 3 motor not working. I don’t no what is error. I am using futaba T10j transmitter using.
pls help me 
Hi. I am just another student swimming through these muddy waters. But, assuming that you still have the USB connected to the laptop (with QGC), go to:
“Parameters” tab on the left >>
“Developer” sub-section on the bottom >>
“Circuit-Breaker” sub-sub-section >>
Change CBRK_USB_CHK to 197848 (may vary with different versions, but this number will be given if you click on this parameter…default is 0, you need to change that)
What this does is, this allows you to arm the rotors even with the USB connected. I would recommend removing the propellors!
I don’t have a clear solution for your joystick problem. All I know is that the Transmitter communicates one-way to the receiver, the receiver conveys messages to the QGC through the Flight controller…
And yes, Wifi is one of the ways to connect the FC to QGC in real time (probably) without the USB. Although, I am facing issues in that area too. 