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DIY 2 DOF Sim from household junk

Discussion in 'DIY Motion Simulator Projects' started by jambone1963, Feb 9, 2022.

  1. jambone1963

    jambone1963 New Member

    Joined:
    Dec 29, 2021
    Messages:
    8
    Balance:
    - 51Coins
    Ratings:
    +12 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    Hi,
    This is my first try at this. Building it for my grandson so not alot of money to dump into it so i made due with a lot of stuff i had laying around.

    I bought 2 wheel chair motors on ebay for 30.00 a piece. From my research they are from the higher powered wheel chairs that handle 600lb loads. They are 26.1:1 24v 120rpm. Unfortunately they both where from the same side of the wheel chair so i had to turn one around backwards but seems fine. Tell ya one thing this thing can about throw me out of the chair so no problem with power. Im running 2, 12v 70amp server supplies hooked in series to get 24v. If you do that make sure you read how to be safe about it as you have to float one.

    The metal frame was from a table frame i cut up and welded. The base is just wood. The side rails are from an old gaming table that i cut down and welded extra braces on. I used some old bed frame metal for the tv support part. Has a u-joint i cut off a drive shaft.

    The seat was an old computer chair i took off the wheels and such its heavy so i do plan on buying a nice racing seat sometime down the road.

    The wheel is just a cheap one for now.

    The shifter i made from a 12.00 joystick from ebay that you can set for just up and down movement. So it just shifts up and down. Also has 5 buttons i can assign. To make it work i used the board inside an old game pad and wired the switches and joystick to it and shoved it all in a metal box. It works just fine.

    Im just now starting to tweak things so I will add more here as i go and make a video soon.

    So far i have noticed that one motor has a bit more lash than the other so working on the best way to calm that down. Its very balanced (with me 180lbs) so maybe ill change that so its a bit heavier in the back. I guess its gonna be hard to find that sweet spot beings a 58 year old and a 6 year old will be using it :)

    Id like to thank this community and DMax for his great youtube videos as I couldn't have done it without you guys.

    Heres a few pics of it don't laugh like i said most of it was made from junk so it is what it is.

    272193649_476531627215119_8783643230416485438_n.jpg

    258884072_270123688535161_4972962147184795114_n.jpg

    258860004_322232913268214_4821028424165903784_n.jpg

    272454377_5004916129586272_2598270715442458049_n.jpg

    273059117_495104785307296_2478464078611722509_n.jpg
    • Like Like x 3
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,029
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    147,872Coins
    Ratings:
    +10,878 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Nice work, I am looking forward to the video of your rig in action.

    You are correct, a little bit of weight bias should help disguise a bit of the gearbox lash, but it won't eliminate it. Best to set that up with respect to yourself, not your 6yo grandson.
    Last edited: Feb 9, 2022
  3. jambone1963

    jambone1963 New Member

    Joined:
    Dec 29, 2021
    Messages:
    8
    Balance:
    - 51Coins
    Ratings:
    +12 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    Thanks for the info Noorbeast Ill do that he is only here every now and then.
  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,029
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    147,872Coins
    Ratings:
    +10,878 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    What control boards, code and PSUs are being used?
  5. jambone1963

    jambone1963 New Member

    Joined:
    Dec 29, 2021
    Messages:
    8
    Balance:
    - 51Coins
    Ratings:
    +12 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    272215185_954159601894670_4863139579963705932_n.jpg

    258845409_696853737974303_3733557383387708181_n.jpg

    The controllers are IBT-2 43amp. The power supplies are 2 that i made for my ham radios I dont use anymore got them on ebay years ago. They are HP 7001044-Y000 Rev:M 72amp at 12v when using 110v ac. I floated the ground on the second one then ran them in series to get 24v. The code heck ill have to look up i think i got the file here it was a few weeks ago when i did that part. I was following along with DMax videos on youtube.
    • Like Like x 1
  6. jambone1963

    jambone1963 New Member

    Joined:
    Dec 29, 2021
    Messages:
    8
    Balance:
    - 51Coins
    Ratings:
    +12 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    I got the code and alot of info from this page.... https://www.xsimulator.net/communit...3dof-motor-driver-and-windows-utilities.4957/
    • Like Like x 2
  7. jambone1963

    jambone1963 New Member

    Joined:
    Dec 29, 2021
    Messages:
    8
    Balance:
    - 51Coins
    Ratings:
    +12 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    My cost--

    2 Wheel Chair Motors 30.00 a piece

    Arduino 12.00

    2 Double BTS7960 High Power Motor Driver Module 43A H-bridge 11.00 a piece

    2 Hall effect sensor pots 20.00 a piece

    2 switching power supplies 25.00 a piece

    4 HEIM JOINT ROD END (2 LH 2 RH threads 5.00 a piece

    1 joystick 12.00

    2 2x4’s 3.00 a piece

    Cheap wheel and pedals 40.00

    Few nuts and bolts 8.00

    Everything else I found laying around the barn or got free from friends

    Project total - 270.00
    • Like Like x 1
  8. jambone1963

    jambone1963 New Member

    Joined:
    Dec 29, 2021
    Messages:
    8
    Balance:
    - 51Coins
    Ratings:
    +12 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    • Like Like x 1
  9. jambone1963

    jambone1963 New Member

    Joined:
    Dec 29, 2021
    Messages:
    8
    Balance:
    - 51Coins
    Ratings:
    +12 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    IMG_20220327_022002_0.jpg

    IMG_20220327_022020_3.jpg IMG_20220327_022040_6.jpg

    IMG_20220327_022112_5.jpg

    IMG_20220327_022137_1.jpg

    Sorry for poor video i dont have anyone to film me so it is what it is. I went thru a month of downtime due to burning up a IBt-2 controller. Since then i have added 30amp fuses on the motor line so far so good. Now for more tweaking Ive requested the free diy licence 2 months ago but so far havent heard anything maybe i did something wrong. Looking forward to getting it setup for assetto corsa then try to make some better videos. Sure has been alot of fun building it thanks for the forum theres loads of great info here.
    • Like Like x 2
  10. jambone1963

    jambone1963 New Member

    Joined:
    Dec 29, 2021
    Messages:
    8
    Balance:
    - 51Coins
    Ratings:
    +12 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    Update i just received my free diy licence just wanted to say thanks guys now i can move on to more testing. More to come.....
    • Like Like x 2