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Omnibus F4 and IBUS
#1
Dear, i am trying to connect my Omnibus F4 flightcontrol board and FS-A8S mini receiver. I am using RC radio flysky Turnigy TGY-i6. I binded the receiver and the radio, when I turn it on, i have the red solid light (so i think it is ok...). In betaflight I switch on UART6(then others too) receiver and IBUS, but I cannot get any movements from sticks. I did it like on this video, but nothing, help?



regards
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#2
did you set up betaflight "configuration tab" to use serial RX -> iBUS
Have you set your TGY i6 to AFHDS 2A and output ppm - iBUS

If you take some photo's of your soldering and connections, and a link to the FC you bought, we might be able to help some more...

Oh and welcome to the forum klavdij!
Windless fields and smokeless builds
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#3
I've already asked the same question here. I've resoldered the FS-A8S signal wire to the RX1 pin on Omnibus board about a week ago but haven't had a while to test. Today I have the drone at work with me so I'm going to test if it worked or not, I'll leave a message.

So if it's Omnibus F4 V3 (please note there are more Omnibus F4 versions) you should have the wire from RX soldered to RX1 input and set it as UART1 in Betaflight.
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#4
This is my flight control board OMNIBUS F4. I do not know the version?Where Can I find it? So I try like on picture. In betaflight configurator ports I put the UART6(I try all...) on, and IBUS (I try all...). In my radio I just turn off the PPM and the only thing in IBUS menu is which channel do you want (so I leave the channel 1). Thank you for any help. [Image: Y9HhBoWl.jpg].
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#5
Can you post a pic of your Betaflight ports and configuration screens
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#6
Looks like you have Omnibus F4 Pro. I don't know what version.

Edit : You have version 3 but you have a counterfeit (clone) board. The real Omnibus is blue pcb.
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#7
In the attachement are the betaflight configurator pictures...


Attached Files Thumbnail(s)
       
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#8
(26-Mar-2018, 08:42 PM)klavdij Wrote: This is my flight control board OMNIBUS F4. I do not know the version?Where Can I find it? So I try like on picture. In betaflight configurator ports I put the UART6(I try all...) on, and IBUS (I try all...). In my radio I just turn off the PPM and the only thing in IBUS menu is which channel do you want (so I leave the channel 1). Thank you for any help. [Image: Y9HhBoWl.jpg].
Something isn't right with the port on the bottom-right corner.  According to the manual from top to bottom would be UART 6 rx and tx, ground, 5v and UART 3 tx and rx.  The color code of your wires indicate something totally different.  For instance the first 2 wires are red and black which tells me that you have power connected to UART 6?  Somethin' don't seem right.  Post a pic of your receiver please.
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#9
[Image: n6EudxQl.jpg]

I think, this is the right pin out picture. The colors of the jst connector are different like should be( I connect red wire-signal, yellow wire-gnd and white wire-5v....I watched the picture). The receiver is  FLYSKY FS-A8S.
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#10
Your receiver has IBUS and Sbus. Are you in the correct mode?

Change i-BUS/S.BUS mode
When turned on and bound, the transmitter and receiver can change output mode to i-BUS and S.BUS modes by pressing and holding the bind button for 2 seconds .LED turns off for 1 second when flashed twice:i-bus OURPUT MODE led flashes twice then turns off for 1 second: S.BUS output mode active
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#11
(27-Mar-2018, 05:18 PM)klavdij Wrote: [Image: n6EudxQl.jpg]

I think, this is the right pin out picture. The colors of the jst connector are different like should be( I connect red wire-signal, yellow wire-gnd and white wire-5v....I watched the picture). The receiver is  FLYSKY FS-A8S.
That's what I'm trying to explain. red wire-5v, black wire-ground, white wire-signal
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#12
RENOV8R, according to the diagram, although the wire colors are incorrect, he wired them correctly.
[-] The following 1 user Likes voodoo614's post:
  • klavdij
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#13
Finally I get some sticks movements. I put the signal wires in the same connector in TX3(channel 3 in betaflight) and it works. Thanks to all. Another question. Now I try to test the motors, all 4 works just fine(in betaflight configurator). But I cannot run them with RC radio?
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#14
Have you set up your flight modes and arming switch in Betaflight?
[-] The following 1 user Likes RENOV8R's post:
  • klavdij
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#15
(31-Mar-2018, 03:46 PM)klavdij Wrote: Finally I get some sticks movements. I put the signal wires in the same connector in TX3(channel 3 in betaflight) and it works. Thanks to all. Another question. Now I try to test the motors, all 4 works just fine(in betaflight configurator). But I cannot run them with RC radio?

Connecting to TX3 should have not even worked. I wonder if the manufacturer incorrectly ran the trace when they clone the FC.
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