How to add flysky ibus receiver or Specturm dsm2/dsmx receiver for the Crazybee F4 PRO V3.0 flight controller (Both version compatible)
Weld the signal pin of the ibus or dsm2/dsmx receiver to RX1 pad of the flight controller. Enable Serial_RX for UART1 and VTX(TBS_Smartaudio for UART2) ,then choose the serial-based receiver for receiver mode in the configuration of Betaflight, and then choose the correct receiver provider based on your receiver brand .