Help with frsky xsr receiver and Skyline32+OSD

[MisterSifter]

Hi all, im new to this FPV racing, never actually flown yet even though ive had the gear for weeks and my problem is I bought an Emax Nighthawk X5 that had a Frsky XSR RX and noticed he had 1 wire from the RX soldered to 2 channels but I cant remember which ones (I should have took a pic, stupid mistake)

Just wondering if someone can tell me which ones, its possible I have them in the right place (see below) but I cant get the RX to work in Cleanflight.

Ive seen some people say "dont use cppm use s.bus, but the guy I bought it from seems to have had it wired for cppm so ive decided to stick with if its working for him.



Frsky XSR receiver


Current wiring

 

[QuadKid]

Did you try re-binding the Transmitter to the receiver. Not sure what TX you are using, Taranis X9D+ ?

 

[MisterSifter]

No, I thought about trying that but I figured it was ok because it says "telemetry lost" when I turn the TX off. I will try binding again.

Just watching a video here some guy talking about firmware conflicts between TX and RX, something about internetional and EU conflict, sadly he didnt explain how to check that. Its just a snowball of problems this thing.

 

[MisterSifter]

Yea tried binding and still cant get the RX to work in cleanflight. Totally stuck dont know what to try next.

 

[QuadKid]

he had 1 wire from the RX soldered to 2 channels

Did you buy this used? Was this flying when you got it?

 

[MisterSifter]

Did you buy this used? Was this flying when you got it?

No never flown it, only able to power it up, everything lights up ok it seems. I tried to install my own spektrum RX but it didnt work out, so went back to the frsky. Now I cant connect it to cleanflight anymore, when I try to flash it says cant connect with bootloader even though the pins are touching. Its been a complete nightmare this thing. I see loads of people have this bricked FC thing. Chinese rubbish eh.

 

[MisterSifter]

I just threw it in the bin lol its only £100 im gonna go onto FPV planes, good old fashioned rock solid reliability.

 

[MisterSifter]

Well I woke up this morning with an idea, I tried putting solder on the boot pins instead of tin foil and its flashed ok.

Im going to contact the seller and see if he can help me out, see if he remembers where these wires go..

 

[MisterSifter]

Ive found the issue, the pins inside the RX connector are a bad contact, when I push the wires in it works, the sliders move in cleanflight now.

 

[QuadKid]

There ya go, its always something, my S-bus connector to the RX will loosens up after an hour or so of hard fly'in.

 

[MisterSifter]

There ya go, its always something, my S-bus connector to the RX will loosens up after an hour or so of hard fly'in.

Ive discovered the RX has an issue where you need to apply pressure to it for it to work, actually pushing on the chips on the board makes cleanflight notice it. also touching both antennas makes it work, basically it works when you handle it but not when you let go if it.

 

[Rick M]

Some guys recommend using a pair of tweezers.

 

[MisterSifter]

Some guys recommend using a pair of tweezers.

You mean to short the boot pins? I actually find them to be too big for the job, I use a bit of rolled up foil, as long as you put a bit of solder on the pads first it never fails. In fact I think not applying solder first probably causes a corrupt flash.

Ive got as far as getting to motors turning now, as you can imagine after a week of nothing to suddenly get motion is amazing. It scared the crap out of me though because the throttle is just kicking in at high power, I dont understand why the minimum throttle settings in cleanflight are so high, the quad just want to go into orbit at like 2% throttle.