I have the same problem with rssi level with FPort
Good day to all, has anyone been able to get the telemetry working for Matek F405 wing , with a R9 Slim+ ?.. Radio is the Radiomaster T16. Tried different setups and no good. Could be because Im new to open TX. Im from Hitec/ Airtronics family so all this stuff is Chinese to me.
Hi.
Thanks for great work l. I had Matek F405 wing board and R9mm frsky receiver with flex Fport fw and Taranis with Yapuu script. Till now i cant the telemetry work through inverted F.port of R9mm (on 4.0.5 version) to TX2 uart pad on fc with frsky passthrough protocol(serial protocol 10) Everybody recommended an inverter for fport in case of f4 boards. Will this dev release solve this issue so can i use R9mm receiver inverted Fport without diode and ttl converter to get telemetry.?!
What is the right setup: is serial2 prtocol10 or 23 ? serial_option 0 or 7?
I ve read in the main post that in case of f405 need to connect an external inverter on UART2 than the setup mentioning Serial5…why as i know on f405 serialX=UartX so the serial has same number as the uart on this FC.
Am i missing something. Can you clear me up the above issue…what is the correct wiring…do i need an inverter or diode on uart or Not? Which protocol will wokr and on which uart from R9mm Fport?
Thanks
Many thanks
Im in the same situation with taranis x9d plus and R9mm receiver. Have you solved this issue…if yes whats your wiring and protocol setup?
Thanks
Have you used an inverter on uart of f405? What is your wiring and prorocol setup?
I have a yaapu inverter, but according to a few people I don’t need to use it because thr R9 slim + has both inverted and non- inverted pins. I tried both , blue and orange wires and still nothing. I don’t think this receiver works well with the 405 wing board with arduplane. Maybe with INav and Beta Flight it’s happy. For some of us there is always kill joy issues.
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Hello , is that possible on jumper R8 receiver , this receiver have rx-tx (invert) or F-port ?
Thank you 
I have just installed the Jumper R8 in a glider tonight. I will try it out later and report back.
Yeah 
, I’m waiting your reply …
Thank you
There is new release, no more beta. FPort support is in. F765 works perfect!
I successfuly setup working telemetry (Yapuu script)and RC in link on Matek F405 wing . This works also on 4.0.6stable FW
R9MM receiver with external. Diy rs232/diode inverter cable!
Used UART1…inverter goes to S.port! (next to sbus pin) on r9mm…rx tx vcc gnd goes from rs232 inverter to UART1 tx rx 5v gnd
Serial 1 protocol: 23
Serial 1 option:160
You don’t need to use an inverter on R9MM as you can connect straight to Inverted S Port without inverter board.
I use ArduCopter V4.0.4-dev (def108c0) with fport. Now is release stable 4.0.4. It is removed fport support?
I was install stable 4.0.4 version and fport work. In wiki is information that should work from version 4.1.
@TheTroll @DarkSoulRL a fix for fport rssi has been added to master, should be available soon on the build servers, can you check if it fixes your issues?
Is it ready ? And take a look forward …
Thank you 
Great!
I’ll check as soon as it would be in dev build
With R9MM and R9M via Yaapu telemetry, works perfect on Jumper T16 and on QX7 too! Lovely. Will be possible to connect somehow to R9M with Mission Planner?
@yaapu on telemetry no speed indicated and current shows real current x2.
There’s arduino based project of converting sport to mavlink. Try to use it.
Sadly it’s doesn’t work with FPort