Bug - USB PPM Signal on OSX

[sApErLoT]

HI there,
The OSX version has the problem, that it does not recognize my USB interface for my Transmitter. It is a simple Interface which emulates a Joystick, i guess this is very common for such USB interfaces. On my mac i also have aerofly RC7 which regognize the interface as PPM. I also tried Liftoff on my Win7 and it worked with that interface. So there must be a problem with your OSX version of the game.
Regards

[LuGus Studios]

Does the game not recognise it or your system?

[sbaechler]

I have the same issue with the Aerofly 6 channel USB controller. It is working fine on Windows, but not on OSX.

Joystick Tester recognizes it as PPM and updates the values when I move the controls.

I don't know if calibration is working in Liftoff or if there is a timeout that ends it. (Maybe displaying the raw values would help debugging). When asked to move the throttle it doesn't recognize any input.

[76561198268345260]

Exactly the same problem.

[sApErLoT]

To answer the dev question, the system recognises the interface but not the game. As i said that it does work with aerofly RC7.

[LuGus Studios]

At this point we have no idea what might be wrong, since we don't have access to this hardware. However the fact that it works on Windows but not on Mac is weird. We'll see what steps we can take in order to figure out what's wrong.

[giz77]

same issue.. i've used controllermate which some seem to have had succes with and it recognizes x,y,z axis plus ry rotation for yaw..so the system IS recognizing ALL channels from the USB dongle. I can map those commands to their virtual joystick but liftoff isn't recognizing the virtual joystick.. if I just plugin the usb dongle and select taranis ( I'm using a 9xr-pro) I get throttle,pitch n roll but no yaw input. Oddly if I click xbox or playstation controller I get the channels mapped to different sticks but I can get the model picture on the calibration screen to yaw it just does it with the throttle stick , I get exact same result whenter I activate controllermates virtual joystick or not which leads me to assume liftoff isn't seeing it. If I choose other r/c controller and try to calibrate both the stick movement sliders and the model just flash/vibrate and jump all over the place.. works fine with fpv freerider and yes I know it's been said before that they use a totally different calibration system .. fine BUT it recognizes all 4 channels so USB dongle works fine, it's something to do with the way liftoff sees the channel inputs on osX, or more to yhe point doesn't see them

[TheCodeHippy]

It seems like the remote is sending out a signal that fluctuates a lot, this would interfere with our calibration process. We're planing on changing the process to prevent these issues.

You mention that if you select Taranis you can get Throttle Pitch and Roll working. What you could do is check the Player.xml file. Around line 11 it should say something like this:
<axisYaw>Joy1Axis4</axisYaw>
You could change the Axis manually to a new number (eg. Joy1Axis5). I can't say what number the yaw axis will have on your remote, so you might have to try some.

It's a dirty workaround, but you might be able to fly this way.

Brief explanation of what I think could be the issue:
All axis on a controller have a number assigned to them. These numbers correspond to the joysticks, triggers, switches, etc. Sadly there is no standard as to what the numbering should be. Normally when you calibrate, we check for movement of an axis and store the correct number.
In this case however it seems like one axis of the controller is sending out a fluctuating signal which makes it look like it is constantly moving wildly. As soon as you try to calibrate, and the prompt to move a stick appears, this moving signal is detected. This maps the controls wrongly.
By manually setting the correct axis, you can avoid the interference.

[giz77]

PPM signals always fluctuate.. it's why we use sbus on quads..late now but i'll look at the xml file tomorrow.. any idea exactly where it's stored on Mac save me searching for it.. and as the problem only happens on the yaw channel I think the wrong choice of channel is more likely. but the fluctation on ALL channels is probably why NO channels will calibrate using the "other r/c controller" option.. with that all channels just vibrate n blink .... hey beta software.. this is the way we get ti working.. thanks for looking into it.

[giz77]

ok I got this to work.... using the channel idea proposed above I thought I'd experiment.. first off you must use jr jack plug trainer socket on 9xr-pro, DO NOT turn on radio it will turn on itself in trainer mode when you plug the jack in.. I'm using a 22in1 usb dongle.. plug it in to usb and into radio THEN launch liftoff... you need to map throttle ail ele to channles 1,2,3 but rudder to chan 6 .. select taranis and it works..