Dual gps heading (GPS_UBX_MODE 3)

[cik153]

When using the dual gps heading with two ZED-F9P without connection of UART2 each other, all serial is breaked. So I tried to find someting about that, but I couldn't find that. Most of user use GPS_UBX_MODE 1 for using gps heading. But now I can't use the UART2, so I should use only UART1. Is there a person use GPS_UBX_MODE 3 ? If thare is, let me know how to do that?

** GPS_UBX_MODE 3: Heading (Rover With Moving Base UART1 Connected to Autopilot Or Can Node At 921600)
** Modes 3 and 4 only require UART1 on each F9P connected to the Autopilot or Can Node. UART RX DMA is required. RTK is still possible with this setup.

[AlexKlimaj]

Are you using an ARK RTK GPS? UART1 at 921600 really only works for a short UART PCB connection to the F9P.