SBUS wiring frsky x4r reciever wiring needed
Wrong port. Plug the X4RSB into the “RC IN” port next to the motor outputs.
Idk what the SBUS port on top is for, but I think its “SBUSo” for “SBUS Out” which could run an external device like a gimbal.
I just setup a X4RSB and ran into the same thing. It works plugged into RC IN
S.Bus RX goes to RC-IN same as PPM.
S.Bus Out is for S.Bus Servos, ESC’s etc…