i am having a problem with getting response on my flight controller i am using the rx6r as my reciever and the flight controller is an aikon f42020 
the reciever is connected with my controller but i dont see any input on betaflight in the reciever tab pls somebody help me.
the yellow wire is on smartport and the white wire on sbus_out.

photo betaflight:  
photo wiring fc: 
photo wiring reciever: 

For RC control, you need an non-inverted SBUS signal. Or your FC will need an inverted RX pad. You have neither.

My advice, if your radio has a JR bay and can run OpenTX or EdgeTX, I would move to ELRS or Crossfire and don't mess with the Frsky mess.

(06-Nov-2023, 05:31 PM)voodoo614 Wrote: For RC control, you need an non-inverted SBUS signal. Or your FC will need an inverted RX pad. You have neither.

My advice, if your radio has a JR bay and can run OpenTX or EdgeTX, I would move to ELRS or Crossfire and don't mess with the Frsky mess.

thanks for your reaction
so just so i understand you are saying that it isnt possible with the fc i have or is to hard so i need to buy a crossfire or elrs correct?
and if i choose for crossfire can i use the TBS CROSSFIRE NANO RX PRO

Here is a little read for you to have a better understanding about Frsky and inverted signal.

https://oscarliang.com/uninverted-sbus-s...receivers/

It is not impossible to find the non-inverted signal. Frsky tend to use an signal inverter chip. It is usually pretty easy to locate. Unfortunately, no one has published it yet. So if you are up to it, you can try to locate it. Then you probably have to do a little microsoldering. Or buy a different Frsky receiver that already has the non-inverted signal breakout.

You can try F.Port protocols which is an one wire for both RC control and telemetry. But only on ACCESS and not ASSCT firmware. Which is another reason to steer away from Frsky.

If you do go to Crossfire, yes you can use the Nano RX. My favorite receiver for Crossfire.

(06-Nov-2023, 10:26 PM)voodoo614 Wrote: Here is a little read for you to have a better understanding about Frsky and inverted signal.

https://oscarliang.com/uninverted-sbus-s...receivers/

It is not impossible to find the non-inverted signal. Frsky tend to use an signal inverter chip. It is usually pretty easy to locate. Unfortunately, no one has published it yet. So if you are up to it, you can try to locate it. Then you probably have to do a little microsoldering. Or buy a different Frsky receiver that already has the non-inverted signal breakout.

You can try F.Port protocols which is an one wire for both RC control and telemetry. But only on ACCESS and not ASSCT firmware. Which is another reason to steer away from Frsky.

If you do go to Crossfire, yes you can use the Nano RX. My favorite receiver for Crossfire.

thank you very much for your help i think i wil go for the crossfire receiver that i said earlier because i dont really have the tools for micro soldering

That AIKON F42020 is a bit of a weird one. It's an F4 FC which has no dedicated SBUS pad like most F4 FC's but it explicitly states that that UART1 is for SerialRX without stating if it's an inverted input or not, and that UART3 (the TELEM pad) is for S.Port. On the web page there is no detailed information about that particular pad, but the printed documentation that you get with the FC states that it goes through a bidirectional inverter and can be used for F.Port, Unfortunately the FrSky RX6R receiver doesn't appear to support FPORT firmware so using F.Port protocol isn't an option.

The Betaflight config for the AIKONF4 target also has a software switched inverter configured, but it doesn't tie up with any of the UART resources. If it did then the resource identifier number for the INVERTER resource would be the same as one of the UART resources.

AIKON make some good hardware but their user information and documentation is quite poor. Users shouldn't really need to have to start tracing circuit components to see if pads go through an inverter or not.

There's another past post for it's bigger brother (the AIKON F43030) at the link below where the OP has similar issues with an FrSky RXSR receiver but eventually managed to get everything working using SoftSerial for the S.Port connection...

https://intofpv.com/t-aikon-f4-r-xsr-sbus-telemetry