transmission issue with ELRS | Drone Community | Page 1

quaint glen Nov 17, 2022, 3:22 PM

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Hey everyone, i recently built my drone and also crashed a few times, never broke anything. But recently over night, my signal Transmission from my remote to the drone stopped working. The Drone is connected witch i can tell by the solid green light on the receiver and the C in the ELRS script on my remote. I already asked in the ELRS discord but with no success, so i taught ill try it here.

Does anyone have a solution for this?

toxic geyser Nov 17, 2022, 3:23 PM

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the RX is working properly, it sounds like the connection from the RX to the FC is broken

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sometimes crashes can wipe the drone's configuration

quaint glen Nov 17, 2022, 3:24 PM

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well i flew after the crash

toxic geyser Nov 17, 2022, 3:24 PM

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first step would be to connect it to betaflight and look for anything unusual

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okay

quaint glen Nov 17, 2022, 3:24 PM

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yes, i see no stick input

toxic geyser Nov 17, 2022, 3:24 PM

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also check the physical connection from the RX to FC

quaint glen Nov 17, 2022, 3:24 PM

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rx = reciever right?

toxic geyser Nov 17, 2022, 3:24 PM

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yeah

quaint glen Nov 17, 2022, 3:24 PM

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because if so its working

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did resoilder and testing wit

toxic geyser Nov 17, 2022, 3:25 PM

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it's all wired up correctly?

quaint glen Nov 17, 2022, 3:25 PM

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yes

toxic geyser Nov 17, 2022, 3:25 PM

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do you get vbat telemetry on your transmitter?

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or any telemetry

quaint glen Nov 17, 2022, 3:25 PM

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yes

toxic geyser Nov 17, 2022, 3:25 PM

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go to the telemetry tab which is the last page of the MDL setup iirc

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OK so your transmitter knows what your drone's battery voltage is

quaint glen Nov 17, 2022, 3:26 PM

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so i think i have 9 to ten things in telemetry

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but there sould be more right?

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like 19 or so

toxic geyser Nov 17, 2022, 3:26 PM

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can you list what they are?

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or take a photo

quaint glen Nov 17, 2022, 3:27 PM

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well yes, but later

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im not home currently

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but il do it asap

toxic geyser Nov 17, 2022, 3:28 PM

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okay great

quaint glen Nov 17, 2022, 4:22 PM

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toxic geyser okay great

These are all i got

rn_image_picker_lib_temp_f239eba4-c442-4206-a36d-c9dd18e8f7fb.jpg

rn_image_picker_lib_temp_bd187e34-13cc-4892-be09-7a43bc1abe25.jpg

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And its connected

rn_image_picker_lib_temp_b33eba42-ccce-440c-a528-57d68d68203e.jpg

toxic geyser Nov 17, 2022, 4:26 PM

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@quaint glen have you got a screenshot of the Ports and Receiver tab please?

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also a photo of how the RX is wired to the FC

quaint glen Nov 17, 2022, 4:26 PM

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both ports are active for testing rn

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its now on port 2

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ignore ugly soildering

toxic geyser Nov 17, 2022, 4:28 PM

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quaint glen both ports are active for testing rn

quaint glen Nov 17, 2022, 4:29 PM

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yes,ik that

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it is correct on port 2 noww

toxic geyser Nov 17, 2022, 4:31 PM

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quaint glen both ports are active for testing rn

change this so that only UART2 is set to serialrx

quaint glen Nov 17, 2022, 4:32 PM

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quaint glen Nov 17, 2022, 4:32 PM

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toxic geyser change this so that only UART2 is set to serialrx

so?

toxic geyser Nov 17, 2022, 4:32 PM

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yeah like that

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I don't know what happens when you have multiple set like that

quaint glen Nov 17, 2022, 4:33 PM

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oke did

toxic geyser Nov 17, 2022, 4:34 PM

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hm well I dunno. the wiring does look OK

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and it looks like it's configured correctly

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the RX isn't talking to the FC

quaint glen Nov 17, 2022, 4:34 PM

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but shouldnt there be more in telemetry?

toxic geyser Nov 17, 2022, 4:35 PM

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yes there should

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so the FC and RX aren't communicating with each other

quaint glen Nov 17, 2022, 4:35 PM

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so reciever broken?

toxic geyser Nov 17, 2022, 4:36 PM

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could the receiver wires be shorting out against the case of the vista?

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otherwise yeah it certainly seems like an issue with the receiver

quaint glen Nov 17, 2022, 4:36 PM

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wait il get the multimeeter to test

toxic geyser Nov 17, 2022, 4:36 PM

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you could see if re-flashing it fixes it

quaint glen Nov 17, 2022, 4:38 PM

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blue and green seem to be shorted

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but not on the vista

quaint glen Nov 17, 2022, 4:39 PM

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toxic geyser could the receiver wires be shorting out against the case of the vista?

is it usual the blue wire and greeen should be shorted?

toxic geyser Nov 17, 2022, 4:39 PM

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oh really! well there is your problem

quaint glen Nov 17, 2022, 4:39 PM

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so i guess thats a no

toxic geyser Nov 17, 2022, 4:39 PM

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also green is 5V so don't power this up again until you have sorted it

quaint glen Nov 17, 2022, 4:40 PM

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well

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il get soildering iron

toxic geyser Nov 17, 2022, 4:40 PM

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yeah no none of the pads on the RX should be short with each other

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de-solder things one at a time until it goes away

quaint glen Nov 17, 2022, 4:40 PM

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hmm now that would be dumb

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if that was tthe problem

toxic geyser Nov 17, 2022, 4:41 PM

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well it could be crash damage that only became apparent when it was moved

quaint glen Nov 17, 2022, 4:41 PM

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indeed. had it on a bag while cycling home

toxic geyser Nov 17, 2022, 4:47 PM

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yeah could be that

quaint glen Nov 17, 2022, 4:47 PM

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toxic geyser well it could be crash damage that only became apparent when it was moved

the connection is on the rc

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*rx

toxic geyser Nov 17, 2022, 4:47 PM

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what do you mean?

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have you completely de-soldered the receiver?

quaint glen Nov 17, 2022, 4:48 PM

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yes

toxic geyser Nov 17, 2022, 4:48 PM

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and pads 2 and 3 are still short

quaint glen Nov 17, 2022, 4:48 PM

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the middle ones

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yes

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i found a tiny connection

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almoast a hair thin

toxic geyser Nov 17, 2022, 4:49 PM

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ah, stray wire strand?

quaint glen Nov 17, 2022, 4:50 PM

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maybe

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il test agian with multimeeter to make 101% sure

toxic geyser Nov 17, 2022, 4:50 PM

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great

quaint glen Nov 17, 2022, 4:50 PM

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then il soilder back on

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could also have ben a grass or so

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idk cause i flew in the ground due to connection loss behind a hill

toxic geyser Nov 17, 2022, 4:51 PM

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could be. get a toothbrush on it. you got any isopropyl alcohol?

quaint glen Nov 17, 2022, 4:52 PM

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idk gotta see if we got some at home

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but it seems very clean

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BRO

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fml

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it fixed

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that little shity connection i didnt see

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well i already wrote radiomaster for a replacement of the internal tx

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anyways

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thx for helpign

toxic geyser Nov 17, 2022, 4:58 PM

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haha ok. good. happy flying 👍

quaint glen Nov 17, 2022, 5:13 PM

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ty 😄

lusty halo Nov 17, 2022, 5:20 PM

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quaint glen well i already wrote radiomaster for a replacement of the internal tx

ahem ahem sell it

quaint glen Nov 17, 2022, 5:25 PM

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Or maybe keep it as a backup XD

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But idk if it will arrive anyways

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Havent heard much from them after they said they will send it

toxic geyser Nov 17, 2022, 5:27 PM

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put it in your next quad

quaint glen Nov 17, 2022, 5:28 PM

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the tx on the quad?

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XD

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im looking forward to buy a tinywhoop or a toothpick

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but hard to get in swizerland

toxic geyser Nov 17, 2022, 5:28 PM

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it's whoop season

lusty halo Nov 17, 2022, 5:49 PM

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toxic geyser it's whoop season

which of course means that whoops are f*ing sold out

quaint glen Nov 17, 2022, 5:51 PM

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yes

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and importing in swizerland is expensive

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but the IFLIGHT Baby Nazgul 73 Analog 1S seems nice

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and its avable

quaint glen Nov 17, 2022, 7:49 PM

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so same problem agian

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but the wiring doesnt have a shortage

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nvm im just dumb as fk

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tx and rx swiched

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im dumb

#transmission issue with ELRS