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Problem setting up virtual brake behavior using VKB-Link

Posted: Sun Jan 18, 2026 4:15
by wkwkwk
I am trying to set up virtual braking behavior on my t-rudders using a button on my STECS (#12). The SHIFT is sent and received but the new axes are not activated.

I have followed the instructions at "VKB-Link/Z-Link guide: Sending SHIFT state from one VKB device to another" [http://forum.vkb-sim.pro/viewtopic.php?f=27&t=7391&p=59122#p59122] and at "Using VKB-Link/Z-Link to mimic the T-Link virtual brake behavior" [http://forum.vkb-sim.pro/viewtopic.php?f=27&t=7720].

I can tell that the devices are connected and the SHIFT is being sent through because of the S1 indicators on VKB-Link and in VKBDevCfg. The Boolean logic indicators light up when the STECS button is pushed and the buttons 123 and 124 (as suggested in the instructions) on the rudders light up. The normal rudder axis moves but the two new axes do not (#6 and #8 as suggested in the instructions).

I think my setups match the screenshots in the directions but there is obviously something I have missed. My firmware is newer than a post that mentioned a problem. The rudders are connected to their own black box. I tried t-link v0.7.5 and v0.7.8 as well with similar results - see the connection but no rudder response.

VKBDevCfg v0.93.43
Firmware: v2.19.B
VKB-Link v0.7.6
Profiles attached and screen shots follow.

Devices are connected and S1 indicated:
Image

Boolean logic indicators light up when button is pushed:
Image

No Y & Z axis movement (here nor DCS); note S1 indicator:
Image

Axes profile:
Image

Re: Problem setting up virtual brake behavior using VKB-Link

Posted: Sun Jan 18, 2026 11:59
by Alex Oz
Please reload images
111.jpg

Re: Problem setting up virtual brake behavior using VKB-Link

Posted: Sun Jan 18, 2026 21:14
by wkwkwk
vkb-link.png

devcfg.png

axis profile.png

Axis Test.png

Re: Problem setting up virtual brake behavior using VKB-Link

Posted: Sun Jan 18, 2026 22:06
by Alex Oz
Thanks,
firstly check it

Изображение из буфера обмена.jpg


I haven't checked further, do that and we'll see what happens next.

Re: Problem setting up virtual brake behavior using VKB-Link

Posted: Sun Jan 18, 2026 23:36
by wkwkwk
Thank you. Checking Virtual BUS over USB did not change anything. I checked it in the STECS first, and then in both STECS and rudders. S1 is still being indicated but the virtual axis do not activate.

Re: Problem setting up virtual brake behavior using VKB-Link

Posted: Sun Jan 18, 2026 23:41
by Alex Oz
Sorry, also check global shifts in slave device:

Изображение из буфера обмена (4).jpg

Re: Problem setting up virtual brake behavior using VKB-Link

Posted: Sun Jan 18, 2026 23:53
by wkwkwk
Yes, I had Global SHIFTs set already on (it's mentioned in the the instructions post). Now I have Virtual BUS and External Device checked for both STECS and rudder, with Global SHIFTs checked for rudder only.

Re: Problem setting up virtual brake behavior using VKB-Link

Posted: Mon Jan 19, 2026 0:43
by wkwkwk
...and virtual axes not activated.

Re: Problem setting up virtual brake behavior using VKB-Link

Posted: Mon Jan 19, 2026 9:36
by Alex Oz
there is no any register for output:
Изображение из буфера обмена.jpg


so the register-receiver doesn't receive anything:
Изображение из буфера обмена (2).jpg

Изображение из буфера обмена (3).jpg

Re: Problem setting up virtual brake behavior using VKB-Link

Posted: Mon Jan 19, 2026 10:08
by wkwkwk
I set the Generic Virtual Reg N to 1.

The virtual axes do not respond. Should they?

Generic Virtual.png

Axis Test 2.png

Re: Problem setting up virtual brake behavior using VKB-Link

Posted: Mon Jan 19, 2026 10:10
by Alex Oz
You must mark the register that will be transmitted.
The controller itself has no idea which register to transmit over the virtual bus.
Click Reg# (see sample - register #3 will be selected for bus transmission)
Изображение из буфера обмена (4).jpg
Изображение из буфера обмена (4).jpg (10.43 KiB) Viewed 5928 times

Re: Problem setting up virtual brake behavior using VKB-Link

Posted: Mon Jan 19, 2026 10:30
by wkwkwk
Button 12 is assigned the SHIFT so I selected Reg#2.

Does the Reg N have to correspond? Still no virtual axis activation.

reg2.png

Re: Problem setting up virtual brake behavior using VKB-Link

Posted: Mon Jan 19, 2026 10:33
by Alex Oz
Shift1 should be passed as a global status, it is no longer a button

BUT the receiver expects a button:
Изображение из буфера обмена (5).jpg

If you need to transmit the shift status, you need to create a Boolean shift-button converter in the receiver.

Please attach new profiles

Re: Problem setting up virtual brake behavior using VKB-Link

Posted: Mon Jan 19, 2026 10:58
by wkwkwk
Thank you for all your help once again. This is getting way above my head. I've attached the new profiles.

I do have a Boolean shift function, as per the original instructions.

Re: Problem setting up virtual brake behavior using VKB-Link

Posted: Mon Jan 19, 2026 23:08
by Alex Oz
So, I initially misunderstood the roles and relied solely on the button settings. But that's not the case.
The T-Rudder is the source, and it can't accept any buttons, only the SHIFT status.
But the pedals have a virtual device, which is what led to the confusion.
The received SHIFT status is converted to line 123, but it potentially conflicts, since this register is assigned to receive from the virtual device.
The virtual device needs to be removed—it's designed for use with T-Link, while the pedals are actually the master.
The purpose of the virtual device in STEX is also unclear.
So, we're left with:
GIF.gif

But these trimmers are not used in any way and are useless:
Изображение из буфера обмена.jpg