so iv'e been having this NO VFAS situation when discovering sensors.... and trying to set up audible voltage warnings !!!!  i did enough playing around and video watching to kill a horse..   lol. i figured it out .  the S.PORT was not connected from the receiver to the FC.... SO i got all of them working.... except one of the two powercubes.. One of them im using a X8R receiver and all the sensors are now showing up.... but on the X4R-SD i have in connected the same way S.PORT to the Tx pin on the UART all the sensors are coming up BUT the VFAS !!!!!   any thoughts.....

Can you post photos of your wiring and a dump file.

(22-Apr-2018, 05:53 PM)voodoo614 Wrote: Can you post photos of your wiring and a dump file.

i did a little checking ... my Alien build that has one of the Powercubes and the X8R thats working... the "tlm_inverted = OFF in the dunp file is in fact off.... and all is working great....
with that said heres the other Powercube build w/ the X4R-SD pic's and dump file...  and the Flycolor Raptor s tower with a X4R- SD as well.. iv'e tried both quads with "tlm_inverted " both on and off !!!!
Powercube250 build


Raptor S Tower


tell me what you think ????

Got your PM regarding the PowerCube. Glad you got that working.

As for Flycolor, the wiring looks correct. But you DO NOT have S. Port telemetry turn on in the Port tab. I believe S. Port is hook up to UART 2. Once you have it turn on, try different combinations of on and off for both tlm_inverted and tlm_halfduplex. If UART2 does work, turn S. Port telemetry on in UART1. The manual does not state what UART is the S. Port pad.

(22-Apr-2018, 09:24 PM)voodoo614 Wrote: Got your PM regarding the PowerCube. Glad you got that working.

As for Flycolor, the wiring looks correct. But you DO NOT have S. Port telemetry turn on in the Port tab. I believe S. Port is hook up to UART 2. Once you have it turn on, try different combinations of on and off for both tlm_inverted and tlm_halfduplex. If UART2 does work, turn S. Port telemetry on in UART1. The manual does not state what UART is the S. Port pad.

Yeah i couldnt find a open UART either !!!!! where do you mean "TURN ON S.PORT"  in my dump or set file thru the CLI line in beta flight  ????? this line ????.....set serialrx_inverted = OFF
change this to "ON" ??

Under Port tab in BFC. Look for Telemetry and there is a pull down for Smartport.

(22-Apr-2018, 11:12 PM)voodoo614 Wrote: Under Port tab in BFC. Look for Telemetry and there is a pull down for Smartport.

yeah i tried every tab... UART 1, 2, and 3...  no luck.... i even tried opening up the x4r pkg and soldering a wire to the inversion pin ,,, still no luck.   this FC only has 1 exposed 
UART and the Receiver plugs into that..  there's no other Tx pin available...... i wrote to Flycolor, i guess i'l see what they have to say ..   prob no more Raptor's for me !!!!! UGH....

Telemetry should work. It should be UART1 or UART2. UART3 is for you stick controls. Do you change tlm_halfduplex also?

(23-Apr-2018, 08:03 AM)voodoo614 Wrote: Telemetry should work. It should be UART1 or UART2. UART3 is for you stick controls. Do you change tlm_halfduplex also?

ONCE AGAIN voodoo.... your ideas lead me in the right direction..... Flycolor FINALLY emailed me back and here was the solution.... similar to yours.... I had everything connected 
right... but it was the BF config.... this is what i had to do AND ( turn the "tlm_inverted) to OFF....i had it "ON"....
once i did this "BOOM" everything popped up in the "TELEMETRY" srceen when i "DISCOVERED SENSORS"..... WOW,WOW,WOW.... it not just a HOBBY.. it's an ADVENTURE... 
learning is good.... MANY, MANY thanks voodoo.   JD

Very nice. All about the small victories.