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Trigens G-Seat build starting up

Discussion in 'DIY Motion Simulator Projects' started by Trigen, Jan 4, 2019.

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  1. Trigen

    Trigen Active Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    Hi guys!
    Edited for pictures :
    20190322_184923.jpg 20190322_184931.jpg 20190322_184937.jpg 20190411_211619.jpg 20190418_184833.jpg 20190418_184854 (2).jpg




    So ive finally decided to go for this and ive got most of the parts. It will be based on the berginsons and Rift flyers builds https://www.xsimulator.net/community/threads/riftflyers-g-seat-project.8418/ I will build the seat in wood. I just need to borrow a saw to cut the side parts. I live in such a confined space at the moment that it will also be my comfy chair with wheels and some extra pillows in that mode. Think Tokyo living spaces.

    I have started wiring up some ardunios for testing with a pot and the motors and i hope to start building the actual seat tomorrow. I still need some bearings for the wooden wheels so that will probably take a week or so. Id love to see a tutorial on exactly how but i think i got it correctly

    Ive been thinking of connection the pots in a direct linkage instead of using gears. I have a 3d printer so i can do either if i so wish. Perhaps someone with more experience in this could say something about the resolution the pots would need. Perhaps a 2:1 gear ratio or is it fine with direct?

    The rest is a bit trial and error. My motors are a bit on the small side but i dont weigh much.

    [​IMG] [​IMG]

    So far i have
    4x motors
    2x Ardunios and 50 amp controllers
    4x pots 10k ohm
    Wiring
    Wood
    Wood wheels to be made, have access to lathe. Need bearings
    All the linkages and rods.
    Lots of drilling holes, learned how to sharpen bits!

    I need to get a hold of the link arm you see one that one motor (the black plastic) in metal as they didnt come with one, any tips on name of those are welcome!
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    Last edited: Jan 2, 2020
  2. Ads Master

    Ads Master

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  3. Trigen

    Trigen Active Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    So i decided i just wasnt happy with the previous stuff. Im lacking the saw's i need to get a proper straight cut and it felt a little wonky. Instead i just decided to start on my Dx racer chair and it turned out to be easier (so far) than expected.

    Here's the general idea. The wood panels are actually very sturdy attached like this. The PSU and all wiring will be in a box under the seat. I may build a box in the back later but for now it will be open but with the cabling hidden as much as i can. Thankfully the material i already had was a perfect fit! Ill get aluminium panels to save space for the flaps later. I got a machine shop 10 minutes away where i used to work so i should get that cheap.

    PS this is my office chair too so im currently backless haha!

    Attached Files:

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    Last edited: Jan 8, 2019
  4. Trigen

    Trigen Active Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    As this will mainly be for flight sims im looking to get the most realistic G sense. I maybe actually use paddles (for better ground takeoff/landing noise) and a pneumatic system thats driven by the same motors. its an idea but will see on torque and stall
  5. Trigen

    Trigen Active Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    Getting a little further in my build. The backrest is essentially complete and working but the final position of things are not decided. I 3d printed some brackets for the pots but ill be replacing these with halls sensors later on. Ill use the same brackets though.

    I am skipping the wheels for now as my tools just isnt up to the job of getting a true cut and holes so that will wait. I also have 2x sabertooth x32 on the way and may get another motor to do the belts for a more realistic feel.

    One thing that bothers me is that the pressure you get from the flaps just dont feel right so as a go between i think i will cut them in half and use a hinge. That way i will get more hug feel from the pressure.

    Attached Files:

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  6. Trigen

    Trigen Active Member

    Joined:
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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    The seat is now fully operational but far from finished. The sabertooth's has arrived but im waiting for the resistors. Im testing one hooked up to a car battery. Im also testing out some cooling on the motors with the fan hot glued and they are cool to the touch. Its a wire mess i know!

    I was happy to test it on Dirt rally today but as im real life's Donald duck my wheel (which ive already had to buy a new AC adapter that took 2 weeks to get here) decided it would no longer receive FFB signals after my forth run and a i cant afford a new one for a year lol. All centering forces work so go figure. Can still do flight sims though

    Todo:

    Mount PSU laying flat on the backrest. 3D print housing for both
    3D Print Boxes for motors with the fan on top and vent holes for a clean look
    Clean up all wiring

    Later build things up and out so i get more width. DxRacer's are a bit narrow but acceptable for flaps.

    Attached Files:

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  7. Trigen

    Trigen Active Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    Added some on off switches and a some black cardboard to the back. It's not exactly small but will be less than half f that once I rearrange it. No rush though. Now comes the tuning and some more programming for the G seat.

    I have to admit Dirt rally in VR with the seat tuned reasonably well is one hell of a ride in Finland! I do need to get the jump landings to feel better but other than that its just great!

    Ps fixed the wheel, some moron at logi/microsoft added a switchbox for FFB (in game controllers settings where you dont normally go for logi) and turned it off by default, go figure.

    Attached Files:

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    Last edited: Feb 3, 2019
  8. Trigen

    Trigen Active Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    Managed to finish most today! We'll see about motor covers later ive run out of black! Also need some stuff to cover up the leather seems around the psu etc

    Also as you can see ive gotten some sponsorship :p I happen to be a kite team rider there though

    Attached Files:

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  9. zapata_h

    zapata_h Active Member

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    My Motion Simulator:
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    Good project
  10. Trigen

    Trigen Active Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    Doing some surge sway modifications to the seat ala @SeatTime

    This is mainly for testing and ill be using one motor for the surge element. Two of them is fine though as i do not move the seat forward for braking as this is the wrong force and acceleration forces are not that high. Now it kicks back and leave my upper back free of the seat giving the illusion that i'm off the seat on braking as it should be. For the sway the jury is still out on what i like the most. The feeling in the back is more similar and it does not matter that much which way it goes so it is easier to have it move to the side you would lean in real life and into the seat rather than away and get the correct direction. For cars the first is best but for flying the latter is imo. I have also decided not to go with passive flaps as its a big hindrance to my "real world" directions and will incorporate active flaps if i feel the need later. For now i get good sway and surge with this system. I will most likely add air bladders to the flaps though.

    I decided to go with 2020 profile as its easy to modify but i ran out of hardware 4 minor steps away from finishing. Im also still waiting on my sliders but ive designed a 2020 slider with 3d prints and grease that ive been using for a while. The bottom will get the same system but both will be more compact as this is just way to high at the moment.

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  11. Trigen

    Trigen Active Member

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    My Motion Simulator:
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    I have to admit i do prefer having just the sway (i love the sway) and active flaps. Having the back move forw/back does not add a whole lot for me. Everyone's opinion is different though :)
  12. janio

    janio janio from brazil

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    hello, for me this concept in simulation is new, but I understand that it must be highly responsive to the G-force, mine is more focused on swings and bumps with 180º on the x axis and 60º on the y axis.
    About the potentiometers you asked, I used all the potentiometer resolution for the course of the slopes, but I believe that you should use between 80% and 90% because I noticed a loss at the end of the decreasing direction of the resistance, it is as if the Arduino despised the resistance reading is very low (or maybe it's the high side, I may be confusing). happiness with your project.