I am desperate. I loved flying the qq190 and now I have a new receiver (FrSky ACCST R-XSR) binded successfully, but the flight controller does not recognize the SBUS signal anymore ?? I can not calibrate. It says, “Waiting for SBUS and center your sticks, but there’s nothing going on.” Please help me.
Hi, Sorry to hear you are having this issue. It might be because the R-XSR isn’t outputting SBus mode. In the manual, it states:
To paraphrase this into readable english:
How to change the Frsky R-XSR SBUS/CPPM output Mode:
Sbus mode is indicated on the Frsky R-XSR by the presence of a solid blue led indicator.
If the blue LED is not solid, then the unit is in CPPM mode.
To switch the mode from CPPM to SBUS and vise-versa, long press the Failsafe button on the receiver (marked F/S) for approximately 4 seconds. If the change was successful, the blue led will flash 3 times.
I hope that helps get your QQ190 back in the air!