RC not found with ExpressLRS

[Cloudfan-1035 (Cloudfan_)]

I tried to use expresslrs receiver on ardupilot but there are some problem on it

It seemly doesn’t work,and displayed"RC not found".

And Radio Config seems strange and abnormal(below picture).

Ardupilot version is 4.6.1 and ExpressLRS Version is 3.5.0.

I used the newest QGroundControl to do that.

How can I resolve it?

Thanks.

[Adam_Borowski]

There is guide on expresslrs page: Ardupilot Setup - ExpressLRS
Did not have any problems with it.

Also make sure that rx and tx binding is correct - to make sure disable model match on both sides, set sam pairing phrase and CE/FCC/ISM modes.