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Showroom My 3 DOF first time project

Discussion in 'DIY Motion Simulator Projects' started by Petemnz, Sep 12, 2019.

  1. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    After reading thru this site I decided to build my own sim. Settled on a design with the motors driving under the seat front. Built as 2 DOF first and add rear slider traction loss at a later stage. Brought a welder, wish I'd brought one years ago.

    Parts list so far
    Design 3 DOF front of seat and rear slider DIY prices in NZ$
    Software Assetto Corsa (Bathurst AU and Hampton NZ) 1 $ 25
    Motors KS-90WZY J08 -12v-300w 25:1 gearbox 120rpm 2 $570
    Universal Used BMW car universal Zebra car parts $50
    Steel 20 x 20 x 1.6 box 25x25x3 angle AL thread plate Bunnings 20m $ 840
    10k pots ebay $3
    Arduino UNO ebay $6
    Motor drivers ebay Monster Moto Shield VNH2SP30 14a + Heat sink $22
    Power supply used ebay DPS 1200FBA 100A HP $40
    PC AMD 6 core AMD graphics card used Trademe $280
    Used car seat from MR2 free
    New wheel Thrustmaster T150RS PRO Racing Wheel $350
    Used pedals Thrustmaster 3 pedal trademe $60
    Used shifter G29 with usb mod trademe $40
    10mm thread rod M10 Bunnings $10
    Swivels ebay M10 rod ends $ 4
    M8 nuts bolts Bunnings $20
    M10 rod ends 4 Banggood $20

    IMG_2503.JPG IMG_2501.JPG IMG_2505.JPG IMG_2510.JPG
    First time welding, so pretty happy with result. :thumbs

    PC Spec's for those that asked.
    I've been using for 6 months now, very smooth and good graphics IMO.
    CPU: AMD FX-6300 6-core 3.5 GHz processor
    RAM: 8GB (2 x 4GB) DDR3 1600 MHz G.Skill
    Motherboard: Gigabyte GA-78LMT-USB3 rev 5.0 mATX Socket AM3+
    Graphics card: Powercolor AMD Radeon HD 7850 2GB PCS+
    Storage: 2 x 160GB Hard drives for a total of 320GB
    PSU is a 650W unit with two PCIE 6-pin power connectors.
    OS: Windows 10 Pro 64-bit, activated via digital license attached to motherboard
    • Like Like x 4
    Last edited: May 18, 2020
  2. Ads Master

    Ads Master

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  3. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Went to the wreckers today and removed a drive shaft from a 3 series BMW for my universal - cut to size with hacksaw and welded to steel plate from local hardware store (Bunnings). photo's show trial position , need a hand to find balance point.

    Attached Files:

    • Like Like x 3
  4. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Got the motors today upload_2019-9-28_20-18-49.png upload_2019-9-28_20-19-24.png

    Punched the rivets out of the gearbox and used a hole saw to cut hole for the shaft on other side of gearbox and made into lefthand box. Metal gears looks solid no backlash.

    I should have ordered left and right hand gearbox in hindsight. :)
    Last edited: Sep 28, 2019
  5. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Open gearbox - brass gears is a good sign.

    Attached Files:

    Last edited: Oct 1, 2019
  6. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Testing seating position :)

    Attached Files:

  7. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Deciding on motor position and motor mounts.

    Attached Files:

    • Like Like x 1
  8. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Motors mounted to 3mm angle - will drill holes in frame once final alignment to seat made.

    Attached Files:

    • Like Like x 1
  9. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
  10. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Drilled & tapped M5 bolt into motor shaft to connect to pot.

    Attached Files:

  11. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Pipe sleeve bolted to motor before welding turning arm. ( Don't do this, it needs to be a key way or you will get to much play, I learnt the hard way).

    Attached Files:

    Last edited: May 18, 2020
  12. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Mounting motors and turning arms - checking motion limits, roll 12 deg, pitch 8 deg.
    Not sure if this is normal?

    Attached Files:

    • Like Like x 1
    Last edited: Oct 10, 2019
  13. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
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    Dismantle, paint and rebuild.

    Attached Files:

    • Like Like x 2
  14. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
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    Testing wheel and pedals on local track :)
    • Like Like x 2
  15. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Finally got back into it, the Monster Moto Shields took 2 months to arrive, lucky I ordered 4 as one was DOA . I suspected as much when the motor moved, even when I had turned all PWM to zero. Luckily the other one worked as expected and I used it to test both motors and pots before changing to a new Monster Moto Shield. All tested ok with SMC3 so setup on simtools demo and LFS once I got the interface working with help from https://www.xsimulator.net/community.

    Below is the wiring setup I used to parallel up chips and increase current handling thanks to another helpful post.
    upload_2019-12-10_17-36-18.png
    Last edited: Dec 11, 2019
  16. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
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    Simtools setup with Arduino .
    Pic 1 - monster moto - link pins as wiring diagram
    Pic 2 - Simtools Interface setup - Note your com port could be different.
    Pic 3- Old UPS control box came in handy

    Attached Files:

    Last edited: Dec 14, 2019
  17. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
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    Next issue - these couplings have to much play I need to use the key way. (it bent the stainless bolt) I should have known better but was in a hurry to get it all working.


    upload_2019-12-10_17-31-0.png
    Last edited: Dec 14, 2019
  18. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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  19. Petemnz

    Petemnz Member Gold Contributor

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    • Like Like x 1
    Last edited: Dec 13, 2019
  20. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Another update after refitting keyed levers and fitting control box to frame.
    Motor controller.jpg
    Wife testing :)
    Base sim.jpg
    Heat sink temps on chips.
    I'll put grommets in holes and tidy up cabling later, but keen to test out first.
    Controller temps.jpg
    Last edited: Dec 11, 2019
  21. Petemnz

    Petemnz Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    My test pilot (wife) still seems a bit jerky. (maybe the driver) ;)
    • Like Like x 2