Has anyone has issues with the SpeedyBee F405 v3 FC regarding the UARTs not being correct? I just finished my new build, and I only get video feed from my Air Unit on UART4, although according to the wiring schematics UART1 is the plug for DJI video. I also cannot get WTFOS OSD to work with this new FC as well, and I am assuming it is due to UARTs not being assigned correctly? WTFOS works fine when I move the Air Unit to a different FC. I am using the FC to Air Unit harness that was provided with the stack.

I was able to figure this issue out - Even though the diagram states that UART1 is for DJI, I also need to have UART4 MSP enabled at the same time - Once I did this I got full WTFOS OSD. If anyone else has this issue with this stack, try enabling both UART1 and UART4.

Glad you figured this out . The problem I have is I cannot get any Frysky rcvr too work with this FC. I have tried multiple types and in every config. The closest I have gotten is the green LED on(showingbindsuccessful) rcvr on steady when transmitter is on but still no stick movement and BF setup page showing rcvr failsafe. I have tried multiple XSR's with updated fw done in rcvr  , also a older but brand new XR4S_ V1.1 . Still nothing .. this card has a Sbus input and 405's are not suppose too be able too accept inverted protocols but the directions brag about where too hookup sport , cannot get any telemetry as well . The thing that kinda annoys me about this FC is the instructions and setup showing all these Uarts but knowhere on card can you find Uart 5 nor uart4 , I am well versed in setting this stuff up but this one is got me so far . Trying too bind it too a TX16S with the newest Edge running .

I know exactly what your talking about me too i was about to go insane but i found it . You need too type this one line in CLI (feature -RX_PARALLEL_PWM) .............. I put this in and bam , it shuts the PWM share off on all the RX uarts and that did it .....pleez try

My dude....Thank you for this! I have been trying to figure this out for DAYS! I owe you a beer!

Thanks for this info, got a Speedybee build issue being completed at the moment.
Just an F7 V3

Hi mate I'm having the same problem. Follow your solution but is not work for me, could u please tell me step by step what did u do??

Thanks a lot.

I just had to enable MSP for both UART1 and UART4, and it worked

(10-Dec-2022, 03:35 PM)relentlesstech Wrote: I was able to figure this issue out - Even though the diagram states that UART1 is for DJI, I also need to have UART4 MSP enabled at the same time - Once I did this I got full WTFOS OSD. If anyone else has this issue with this stack, try enabling both UART1 and UART4.

Hi man, I have the same problem and follow your way , but still don't work for me. Could u please explain me exactly what did u do ??