u/Arropie

Hi everyone, I need some help understanding the UART configuration on my setup 😅

Setup:

• Diatone Mamba MK4 F722 APP 65A ICM42688P stack
• DJI O4 Air Unit
• DJI Radio Controller (no external receiver)

Current situation:

• Video feed works perfectly in the goggles
• DJI radio works correctly
• Sticks are moving properly in Betaflight
• BUT I have no OSD in the goggles

In the Betaflight Ports tab:

• UART1 → Serial RX enabled
• UART4 → VTX (MSP + DisplayPort) enabled
• MSP currently disabled on UART4

What confuses me is:

• the radio already works with this configuration
• but the OSD does not show up

Could it be that on this stack the DJI O4 uses different UARTs for RC input and MSP/OSD?

Thanks 🙏