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Tutorial From AtoZ : 2DOF arduino wiper playseat

Discussion in 'DIY Motion Simulator Projects' started by RacingMat, Aug 8, 2013.

  1. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    Last edited: Dec 28, 2013
  2. RaceRay

    RaceRay Administrator Staff Member SimAxe Beta Tester

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    Would be good to have that as additional note in the first post of this project thread, so people see on a glance that this thread is outdated here.
  3. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    It's done, René! ;)
    Soon I'll publish a new tutorial about DIY Shifter!
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  4. RaceRay

    RaceRay Administrator Staff Member SimAxe Beta Tester

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    Thanks Mat,

    have a pleasant trip into New Year;)
  5. Tech2123

    Tech2123 Tech2123

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    I notice you have the wiper motors mounted in different positions? is this recommended?

  6. bsft

    bsft

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    @Tech2123 , racingmat has only built ONE sim, if you have a design in mind, start a new thread and we can chat about it there.
    There are some of us whom have been through 10 or more builds getting motor position sorted.
  7. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    The question is why the motor's mounting is different between right and left side...
    In fact, only because the mounting base was not high enough and full of pre-existing holes, I had to find a position where I could screw the motor ;-)
    so there is nothing recommended!

    Do you plan to start your own simulator? Good idea!
    I posted my first building tutorial on the french forum Gamoover.net and leonaikikai started his own the 5th january and finished yesterday ! 1 month ;-)
  8. bsft

    bsft

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  9. Tech2123

    Tech2123 Tech2123

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    My Motion Simulator:
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    Yes I have started to build it, based on your design, added monitor mount for 3 monitors, at stage of mounting motors ect, got electronics all built, will need info on the software and plugins, want to run a dash as well.

    I will use for Flight and car sim, I will try to use 2 computers.

    Pics attached..

    Attached Files:

  10. bsft

    bsft

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    wipers will struggle if not break using them and his motor placement. Especially if you plan to add 3 screens.
    Make sure it is balanced properly as well.
    Look at either big worm gear motors like the daytons or 12v boat winch motors. Then place the motors at at least 30 deg angle back and to the sides so they run properly. Mats design (not actually his) is NOT suitable for what you are planning.
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  11. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    Yes! Looks very good!
    So you chose to move the screens: I'm eager to see that (i was affraid by vibrations and weight)!
    To start, you can use the presets I uploaded in the Resources (axes and interface) and run! (Hopefully!)
    Mat
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  12. bsft

    bsft

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    Just a note, another member has 3 screens on his sim, so you will need bigger motors and more angle and height for the motors to connect.
    look at this vid to see, disregard the surge slider he has underneath it. The video shows the better placement for motors if you want 3 screens on it.
    Thanks Lee.
  13. Tech2123

    Tech2123 Tech2123

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    I looked at the video, it looks dooble, I would have to make a motor extension to my current frame to get those angles, since I not done the motor yet, helps me move forward.

    Do you know the recommended RPM for those gear motors?
  14. bsft

    bsft

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  15. Tech2123

    Tech2123 Tech2123

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  16. bsft

    bsft

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    Yes I has motors up front near the feet , but I didnt have screens mounted on it.
    With screens on it, you need to have the motors connecting as high as possible to overcome the high centre of gravity. Hence the shoulder mount and motors at 30-50 deg angle at the back. The angle should be something like how the Scn5 is mounted on a seat mover. That sort of angle.
  17. Tech2123

    Tech2123 Tech2123

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    Great thank you.. I will go with the rear high mounts, that was the plan for the mount originally, just the 30-50 degree part I will need to extend the motor mounts a bit (putting the motors sideways seems a bit more easy to mount)
    Another question? The pots I got are not 360 degree so I will have to either get different ones or mount them with the slotted lever style that never goes 360.
    Re: center gravity, I did center it with monitors, and controllers, pedals, etc. and driver before I attached to base.

    Thank you for all the info really helps, I have been wanting to do this for 3 years now.
  18. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    Hi Tech2123!

    What you have to design is the Moment = F * distance from joint
    Both lateral view and rear view
    moment des forces1.PNG moment des forces2.PNG
    Effort required from motor in Red or Blue configuration is roughly equal if distances are equal.
    As in your case, front part is longer : so putting the motors in front of the seat will let you have shorter rods.

    Mat
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  19. bsft

    bsft

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    @RacingMat , @Tech2123 , again front mount motors will work, especially down near the feet, but you still need to connect them as high as you can.
    With my "foot motor" frame, I made a section so the motor connection hooked up at about the bottom level of the seat, but higher is preferred. Mine worked as the motor to pivot was about 700mm distance. I didnt have screens on mine moving with the frame. In foresight, a bit higher connection would have been better again.

    Its not JUST a matter of balancing the frame, but going higher than the centre of gravity , which generally speaking is your belly button. If you can go up near the same "line" as that or higher, you are going to put less load on the motors.
    Its not a matter or shorted rod end connections, its a matter of overcoming the power needed to move the thing.
    So @Tech2123 , if you want to move 3 screens, you HAVE to mount the motors at the back at the shoulders or even a bit higher if you can. And yes , as much angle as you can. 30-50 deg.
    And you calculated the best pivot point with everything on the frame, not the actual centre of gravity. Pivot balance is crucial, next thing is over coming centre of gravity.
    With pots, if they are single 360 deg turns, just tap a hole in the back of the motor shaft and slot the pot shaft into this. Then you use about 180 deg turn of that pot and it will still be very accurate.
    Cheers, David.
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  20. treza

    treza New Member

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    Hi!
    writing your point of view in bold and UPPERCASE is not explaining... unlike formulas and sketches
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