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FrSky R-XSR, no Channel receiver bands moves in Betaflight... Need Help!

#1
Hi,

I just switched from Spektrum to FrSky on my 4 quadcopters. I do have a connectivity issue it seem, but it is pretty weird as it behave, or not behave... I spent a lot of time troubleshooting, please let me know if you have anything else then: 'it should work'! I am willing to try anything, I am sure 2 brand new Rx and that Tx are broken????

Let me give you more details:

Tx: X9D plus
Rx: R-XSR


FC Board: Naze32 Rev6

Connected with: Sbus + Telemetry.

Got: Solid Green + Solid blue LEDs. So, should be bind properly.
Got: 9 Channels of Telemetry on my Tx. So, it does communicate this way.
On Betaflight, NO Receiver inputs whatsoever.:mad:

I am connected: S port, Yellow wire on SoftSerial 2, (pins 7&8 (but 9&10th holes) on Naze32)
S Bus, White wire on UART 2 RX, (pins 4 (but 6th hole) on Naze32)
PWR & GNDs are fine

I got in Betaflight: PORT: RX = UART 2 = serial RX ON
Configuration: RX serial, Bus
Soft Serial, Telemetry ON

I tried in CLI: set subs_inversion = ON/OFF

Loaded last Firmware for both the Tx and Rx

Tried 2 different Rx (Both R-XSRs)

So no luck, still no seing the Receivers bands moving with the sticks in the Betaflight Tab.

Is there anything I should try in my settings?

See all photos below

Thanks so so much for the help! ;) Help2.png Help1b.png
 

LitterBug

Troll Spammer
#2
Looks like you have the s.port telemetry from the FC to the R-XSR working correctly, but the SBUS from the R-XSR to the FC is not working. Possibly connected to the wrong port. SBUS should go to an RX pin, and s.port should go to a TX pin. Not familiar with the NAZE pinouts to be much help there. The pictures showing the connection between the RX and FC, and the ports tab are pretty small, I can't make out the details.

LB
 
Last edited:

PsyBorg

Wake up! Time to fly!
Mentor
#3
Why do I keep thinking this needs to be on uart 3 and why am I not seeing uart 3 listed on the screen shot of the ports tab....

Do the Betaflight gui version match the firmware version of the FC?
 

LitterBug

Troll Spammer
#5
Managed to zoom in an see the details. Ok, I see what is going on. You are using the white wire from the R-XSR which is the sbus input to the RX for failover. You should be using the Green Sbus out wire not the white one.

Cheers!
LitterBug.
 

ElectriSean

Eternal Student
Mentor
#6
Why do I keep thinking this needs to be on uart 3 and why am I not seeing uart 3 listed on the screen shot of the ports tab....

Do the Betaflight gui version match the firmware version of the FC?
Naze32 only has 2 UART's, and #1 is shared with USB. F1's... Not just slow with small memory ;)