Posts by Administrator

    How much does it jump? Sometimes it's actually very tiny but the animation seems to exagerate. If you run joy.cpl and do Settings > calibrate and display raw data you'll get a sense of how much variation there is. It should really range only +/- 2 or 3 for values typically around 2,000

    Ahhh, resin. I just don't think it has the strength for this part. Do you have an FDM printer too? If it's just for this part someone in the community might print a few small parts for you. It could explain your difficulties with the screw thread too.


    Otherwise lots of the finishes look really smooth - though that base looks a little funny in places.

    These springs look right but i’ll check them later today with software to help me get more precision. In the meantime here are my thoughts on options.

    1. Springs wrong
      • i’ll check but at this stage i suspect not
    2. Assembly wrong
      • you said the spring was not tight at neutral. The design doesn’t achieve much tension at neutral but it shouldn’t be loose.
      • If you can reassemble and photograph the assembly that would help
    3. Print strength.
      • Are you using eSun PLA+?
      • How many walls and what infill density?
      • Are your prints coming out clean/strong or with gaps/zits/general untidyness?
      • Please post some pics of your other printed parts


    Update: Spring is right. Length should be 31.8 and wire thickness 1.42


    Some very useful learnings came to light when YouTuber Overkill spent time with the AuthentiKit P-51D throttle in preparing a video. It is essentially jitter as demonstrated by this short video.


    Jitter is something that was given considerable investigation during the development of the hall sensor based MagHall6803F units which appear in all AuthentiKit throttles. It is an inherent issue of noise with hall sensors but to date has not proven to be very noticeable. I built a test bed to run a variety of hall sensors through a batch of tests and found that, when calibrated, jitter was in the 0.05% to 0.29% range so pretty insignificant, however different sims and aircraft seem to animate it to greater or lesser degrees.


    In this case Overkill also found 2 very significant factors that contributed to the jitter and with some attention to these was able to virtually eradicate this issue.

    1. The USB hub - this video is from a 90watt USB 3.0 hub. He changed to a different hub and the problem was much reduced
    2. Some conflight with a Virpil flight stick


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    To hopefully remove the issue completely I am looking at ways to insert to remove noise at source (with a small capacitor) or to remove it via software.

    Magnet orientation is as per standard maghall assembly. Have you done calibration in the joystick app? Settings > Calibrate. If so, do it again and tell me what range the numbers go between which gives numbers being that "erratic movement"


    We only use the tuning app when we need to do something special. The stick doesn't use it.

    We don't assign anything in our software and there is no need for the tuning app. It is very hard to say what the problem is as this is your own design and not anything AuthentiKit related. I would simply duplicate the wiring in our Spitfire flight stick. Then you should see these 2 axes mapped - X Axis and Y Axis. This is achieved by using the bottom 2 rows of the Leo Bodnar board.


    Thanks for the update. Just to be clear are you saying your mixture is now working in DCS via the tuning app? If not we can keep working on it here. Minor signal fluctuation won’t cause a problem here. Hall sensors and the BU board have raw output of 0-4095 and you’ll get + or - 2 or so fluctuations due to signal noise. Its a tiny % though and shouldn’t cause a problem. Are you getting a lot more? I would suggest keeping this discussion to the mixture issue and starting a new thread for your other control question.

    We can’t change the throttle design because it’s a standard input on the universal hub and also in MSFS the mixture is controlled via an axis, however there are 3 solutions.

    1. DCS may modify the P-51 tosupport an axis. They did this for us for the Spitfire. Admittedly a longer term solution
    2. Use the AuthentiKit Tuning App - it was made for exactly this issue to map axis positions to discrete inputs. See video link below.
    3. Other variants of 2 - some people use joystick gremlin

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    Is that a permanent swap of axis? If you unplug the usb and plug in again what do you get? One possibility with the x axis is hall sensor noise - it is only 0.5% jitter and may not show in sim.


    You can also check a good strong ground connection on the BU board and in the throttle. You could also tease apart the Maghall units/panels to create some physical space and test if there’s crossover noise due to adjacent Maghalls/magnets

    One tip while you’re waiting is to use a different axis row or swap mixture with a known working axis. I tend to do all my debugging by swapping wires with known working inputs as I don’t expect users to have multimeters. When you get a solution please let us know thanks.


    I just changed the thread title by the way to help others with a similar problem

    Hi, thanks for the feedback. Just to be clear what is the main problem that you need help with? Is it the mixture? Could you show some photographs of the wiring order differences as these obviously need correcting. There are no MagHalls in the pedestal so I'm wondering if you are connecting to the wrong pins.


    Just for clarity the control stick is not AuthentiKit - is that correct?


    You're quite right the RJ45s must be the same - I state this as clearly as I can but don't repeat it with every build guide as I point people to this page instead. Did you look at this page? If so then it may help if I move the caveat up and make it more prominent.


    ATK201 – RJ45 Keystone Jack – AuthentiKit.org
    Replica Controls for Flight Simulation - Immerse yourself completely
    authentikit.org

    Thanks for confirming that you've calibrated in windows. Here are a few things to try:


    1) Have you retested since making changes. For example I find that calibrating in windows while MSFS is running does not update the calibration MSFS remembers.


    2) Have you tested in another aircraft?


    3) In MSFS mappings does the travel only go part way?


    4) Do you have any assistance settings - some sort of auto-mixture perhaps might be kicking in. Test #3 should isolate this one.