Note: When you connect the receiver to 2s fc, please don't forget to plug the battery, otherwise the reciver will not work at all because if you don't plug the battery, the reciver doesn't have any power to work.

Receiver Connection

1) How to connect a receiver with SBUS signal output (Frsky XM+ for example).


Here is the connection diagram with XM+ receiver.

We use the AUX12 channel as the RSSI signal channel in XM+ receiver.


Step 1, on Betaflight GUI, configure the UART1 port to serial port in Ports tab. Then click the Save and Reboot button in the lower right corner. Step 2, in the Configuration tab, for Receiver Mode, choose Serial_based receiver (SPEKSAT, SBUS, SUMD); Serial Receiver Provider, choose SBUS. And click the Save and Reboot button in the lower right corner.



2) How to connect a receiver with DSMX signal output (Fullspeed DSMX receiver for example).


Here is the connection diagram with Fullspeed DSMX receiver.


Step 1, on Betaflight GUI, configure the UART1 port to serial port in Ports tab. Then click the Save and Reboot button in the lower right corner. Step 2, in the Configuration tab, for Receiver Mode, choose Serial_based receiver (SPEKSAT, SBUS, SUMD); Serial Receiver Provider, choose SPEKTRUM2048. And click the Save and Reboot button in the lower right corner.


3) How to connect a receiver with TBS Crossfire signal output (TBS Crossfire Nano Rx for example).


Here is the connection diagram with Crossfire Nano receiver. Using the UART1 on the FC board on the diagram below. Also, you could use the UART3 if you want.

On Betaflight GUI, configure the UART1 port to recognise the Crossfire protocol. First, configure the UART1 port to serial port in Ports tab. Then click the Save and Reboot button in the lower right corner. 

Second, go to the “Configuration” tab, under the “Receiver” Section, select “Serial-based receiver“, and select “CRSF” in the second option. Don’t forget to enable “Telemetry” feature too before pressing “Save”.

For more details about how to use TBS crossfire receiver, check TBS CROSSFIRE SETUP WITH BETAFLIGHT on OscarLiang.


4) How to connect a receiver with Flysky IBUS signal output (Flysky FS-RX2A for example).


Here is the connection diagram with FS-RX2A receiver.


Step 1, on Betaflight GUI, configure the UART1 port to serial port in Ports tab. Then click the Save and Reboot button in the lower right corner. Step 2, in the Configuration tab, for Receiver Mode, choose Serial_based receiver (SPEKSAT, SBUS, SUMD); Serial Receiver Provider, choose IBUS. And click the Save and Reboot button in the lower right corner.