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Controller 3 not connecting

AJE Drone

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Joined
Aug 27, 2024
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I have built my first FPV drone (should have gone BNF)
Using the speedybee F405 V3 with the 03 air unit connected to the goggles and controller 3.
I can connect the goggles to the air unit but cannot connect the controller.
In Betaflight the receiver section only shows white bars where there should be coloured ones.

I have tried flashing the firmware but have been unable to complete the process.
I have changed back to the backup firmware, but still nothing.

I have tried putting set sbus_baud_fast = on, but it returns an error about the invalid name.

Please, does anyone have idea what I have done wrong and what I can do to put it right?
 
It turns out the the receiver needs to be set to UART 2 and not UART that the 03 air unit is plugged into.
 

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