The DJI Goggles V2, O3 Air Unit, and FPV Controller 2 are all linked, the controller can be calibrated in the goggles but in Betaflight the controller inputs are not showing in the Receiver tab.

Hardware:

- Speedybee F7V3 FC
- Speedybee BLS 50A ESC
- DJI O3 Air Unit.

Steps taken:

- updated all firmware to latest version
- selected: COM4 - Betaflight STM32F7x2, 115200
- connected
- set Serial RX for UART1 to on
- set Receiver Mode to Serial (via UART)
- set Serial Receiver Provider to SBUS
- set ESC/Motor Protocol to DSHOT600
- set sbus_baud_fast to ON in Betaflight CLI
- set mode in goggles to SBUS Baud Fast
- saved all settings

Fixed: The wrong UART number was set.

Tutorials I found said UART1 but mine was on UART2, so maybe it varies with stack?

I had the same issue. It turned out when I flashed the firmware on my FC I forgot to set the radio protocol from CRFR to SBUS (in firmware flasher settings). After fixing this it worked out perfectly well. Hope that works for you as well.

Thanks for your message.
I still have the same issue. Everything in linked all together, I see video in my Googgles V2, everything is up to date.
I flashed the firmware to pass it in SBUS protocol only as well as selecting the SBUS mode accordingly in the Goggles and entering the "set sbus_baud_fast = ON" in BF CLI.
Still no changes.
Any help would be highly appreciated
Best