1. For downloading SimTools plugins you need a Download Package. Get it with virtual coins that you receive for forum activity or Buy Download Package - We have a zero Spam tolerance so read our forum rules first.

    Buy Now a Download Plan!
  2. Do not try to cheat our system and do not post an unnecessary amount of useless posts only to earn credits here. We have a zero spam tolerance policy and this will cause a ban of your user account. Otherwise we wish you a pleasant stay here! Read the forum rules
  3. We have a few rules which you need to read and accept before posting anything here! Following these rules will keep the forum clean and your stay pleasant. Do not follow these rules can lead to permanent exclusion from this website: Read the forum rules.
    Are you a company? Read our company rules

Showroom Compact AC Servo 6DOF Rotary Stewart platform

Discussion in 'DIY Motion Simulator Projects' started by knaufinator, May 26, 2020.

  1. knaufinator

    knaufinator Member Gold Contributor

    Joined:
    Nov 16, 2017
    Messages:
    39
    Occupation:
    Computer Engineer - RFID Specialist
    Location:
    akron,ohio
    Balance:
    40Coins
    Ratings:
    +48 / 1 / -0
    My Motion Simulator:
    6DOF
    A compact 6DOF platform I have been designing/building for the last 2 years, wanted to finally get it properly documented here, as I used this site as a wonderful resource that help guide me to my ultimate design. The design focuses on being compact in size yet still toss a rider around like a ragdoll...

    Rotary Stewart Platform using 6 - 750 W AC servo motors w/50:1 high precision planetary gears.
    Custom PCB that hosts a ESP32 microcontroller for interfacing and controlling of the motors.

    It's also very much so... Bolted to the concrete floor!! It would leap into the air majestically otherwise


    IMG_20200404_094100.jpg

    The project is on Github, PCB, platform code and major parts used, so to help anyone else in their hunt.
    https://github.com/knaufinator/6DOF-Rotary-Stewart-Motion-Simulator

    My Youtube Channel - Subscribe!
    https://www.youtube.com/channel/UCm_IVsEpLjsR-aZIYZF6-_Q

    Overview of platform


    iRacing


    GTAV


    NoLimits 2


    Dirt 2.0
    • Winner Winner x 4
    • Like Like x 3
    Last edited: May 26, 2020
  2. Ads Master

    Ads Master

    Balance:
    Coins
    Ratings:
    +0 / 0 / -0
  3. knaufinator

    knaufinator Member Gold Contributor

    Joined:
    Nov 16, 2017
    Messages:
    39
    Occupation:
    Computer Engineer - RFID Specialist
    Location:
    akron,ohio
    Balance:
    40Coins
    Ratings:
    +48 / 1 / -0
    My Motion Simulator:
    6DOF
    Build Album
    Chassis was created around the seat itself
    IMG_20180516_181342048.jpg

    Threaded bungs held in place by a jig
    IMG_20180609_190515937_HDR.jpg

    Eye balling orientation
    IMG_20180609_194016097_HDR.jpg

    Welding the Chassis to the bungs
    IMG_20180726_085711154_HDR.jpg

    More,.. Eye balling orientation
    IMG_20180908_174815449_HDR.jpg

    First mating of my gear and motor trial
    IMG_20180924_161034345.jpg

    Imagining more motors and lots of more work to do....
    IMG_20180924_161205890.jpg

    Coped tube ends so they can be welded as cleanly as possible
    IMG_20181006_093055189.jpg

    Seat bracket made, all that eye ballin payed off...
    IMG_20181007_135114564.jpg

    Prevent rust, paint protection.
    IMG_20181008_185946126.jpg

    mocking up pedal box area and slope
    IMG_20181014_134944401.jpg

    Test mounting of pedals for sizing chassis
    IMG_20181016_180039214.jpg

    Pedal Bracket start
    IMG_20181017_134722260.jpg

    Helper
    IMG_20181017_145542108.jpg

    Pedal Bracket END!
    IMG_20181017_153946472.jpg

    Welding up the bottom pedal box brace
    IMG_20181020_182644634.jpg

    Back in place on the jig for more modifications
    IMG_20181021_112722953.jpg

    Welded Pedal bracket onto chassis bottom brace
    IMG_20181021_160737308.jpg

    First arm assembly - with High misalignment heim joints
    IMG_20181104_132824761.jpg

    Welded up the top section of the chassis that will hold the monitor and wheel
    IMG_20181116_201534775.jpg

    Shifter, custom ebrake, and tiny keyboard solidly attached...
    IMG_20190119_121427244.jpg

    Tactile transducer bracket...
    IMG_20190220_154621971.jpg

    Tactile transducer bolted to frame of seat
    IMG_20190220_171501809.jpg

    Newer gear(less backlash)/servo sitting on a 100 pound steel plate
    IMG_20190423_171833913.jpg

    Fabricating Gear bracket 1/4" steel plate
    IMG_20190615_160307768.jpg

    Welded first Gear bracket onto steel plate
    IMG_20190615_162923590.jpg

    2x3 inch steel rectangular tube, to lift the platform off the ground
    IMG_20190629_092400853.jpg

    Mocking up the bottom feet area,.
    IMG_20190629_095454987.jpg

    Gear/motor in place on base for first time -- Giggidy,..
    IMG_20190629_124140649.jpg

    Needed the base to be higher than the rectangle tube would allow, thick steel tubing for an extra few inches
    IMG_20190703_193531918.jpg

    Pre welding mock up
    IMG_20190703_200517926.jpg

    Welded and painted
    IMG_20190703_220717748.jpg

    Gear bracket support added so no flex occurs
    IMG_20190704_113152013.jpg

    More Brackets
    IMG_20190720_120910_244.jpg

    More welding
    IMG_20190721_090537498.jpg

    oh snap,..This is pretty
    IMG_20190721_105307131.jpg

    Rust protection!
    IMG_20190721_112337002.jpg

    First swing arm in place 7 1/4" long
    IMG_20190721_135307547.jpg

    Got a tiny server case to use to mount all of the AC Servo power supplies.. now to figure out how to stuff it all in there...
    IMG_20191005_132216987.jpg

    Running the wires for 220v and distribution blocks
    IMG_20191026_133238568_HDR.jpg

    Filling it UP!
    IMG_20191027_142444455_HDR.jpg

    Swing arm production line...
    IMG_20191109_183140562_HDR.jpg

    AC Servo control box all wired up and TURNED ON!!!!
    IMG_20191117_094336506.jpg

    All motors mounted for first time
    IMG_20191206_154256905.jpg

    Adding threaded bungs to the swing arm for attaching the chassis platform/arms
    IMG_20191208_154218178.jpg

    Lifting the base onto the threaded anchors in the cement floor. using a car jack...
    IMG_20191213_162653789.jpg

    By this time I needed to mod the wheel area for a new Fanatec wheel,... so I hacked of what I did to start over
    IMG_20200207_213756755.jpg

    Welded a extension on to chassis for Fanatec wheel
    IMG_20200207_223445562.jpg

    Blower Fan with 90 degree (car air intake) tube for wind feels
    IMG_20200301_072736.jpg

    Rear surround speakers
    IMG_20200301_072812.jpg

    Oh look,.. its almost done,... Giggidy...
    IMG_20200301_073030.jpg

    Monitor bracket, welded to chassis. (Universal Vesa mount, then I took a angle grinder to it to get the piece i wanted...)
    IMG_20200320_164712.jpg

    Magnetic limit switch installed
    IMG_20200321_113441.jpg

    Beauty shot of the motor base
    IMG_20200325_211417.jpg

    "My muse my flame"
    IMG_20200404_094100.jpg

    Green screen room!!!
    IMG_20200508_114455.jpg

    Needed a room for the rig, May as well make it green!
    IMG_20200508_125314.jpg

    Small monitor attached below the main monitor for SimHub, or video recording display
    IMG_20200516_091733.jpg
    • Like Like x 6
    Last edited: May 27, 2020
  4. Thanos

    Thanos Building the Future one AC Servo at a time... or 6

    Joined:
    Jul 6, 2017
    Messages:
    813
    Occupation:
    Electronics Engineer
    Location:
    United States
    Balance:
    4,373Coins
    Ratings:
    +697 / 6 / -0
    My Motion Simulator:
    AC motor, Motion platform, 4DOF, 6DOF
    Nice!! Welcome!
    • Like Like x 1
  5. Petertje

    Petertje “Engineering changes the world.” —Isaac Asimov Gold Contributor

    Joined:
    May 7, 2020
    Messages:
    28
    Occupation:
    Mechanical engineer / battery specialist
    Location:
    The Netherlands
    Balance:
    203Coins
    Ratings:
    +36 / 0 / -0
    My Motion Simulator:
    6DOF
    I'm working on a linear 6dof setup, but this looks good too! Nice video's!
    • Like Like x 1
  6. Thanos

    Thanos Building the Future one AC Servo at a time... or 6

    Joined:
    Jul 6, 2017
    Messages:
    813
    Occupation:
    Electronics Engineer
    Location:
    United States
    Balance:
    4,373Coins
    Ratings:
    +697 / 6 / -0
    My Motion Simulator:
    AC motor, Motion platform, 4DOF, 6DOF
    Be sure to mention that the platform is bolted on the floor... :cheers
    • Agree Agree x 1
  7. knaufinator

    knaufinator Member Gold Contributor

    Joined:
    Nov 16, 2017
    Messages:
    39
    Occupation:
    Computer Engineer - RFID Specialist
    Location:
    akron,ohio
    Balance:
    40Coins
    Ratings:
    +48 / 1 / -0
    My Motion Simulator:
    6DOF
    Lol, post updated!
    • Funny Funny x 1
  8. knaufinator

    knaufinator Member Gold Contributor

    Joined:
    Nov 16, 2017
    Messages:
    39
    Occupation:
    Computer Engineer - RFID Specialist
    Location:
    akron,ohio
    Balance:
    40Coins
    Ratings:
    +48 / 1 / -0
    My Motion Simulator:
    6DOF
    I recently added a solid monitor bracket to the motion rig, made a time lapse of the process.


    I have ordered 2 new 50:1 gear boxes to replace the 2 gear boxes I have in the rear. They are older and have more backlash than the rest, 12 arcmin vs 5 arcmin... its enough of a difference ... to get me to spend 500 on replacing them,... in the name of perfection.
    • Like Like x 1
  9. frsim09

    frsim09 New Member

    Joined:
    Jan 31, 2016
    Messages:
    22
    Location:
    Ariège, France
    Balance:
    497Coins
    Ratings:
    +9 / 0 / -0
    My Motion Simulator:
    Arduino
    Congratulations :thumbs, very nice achievement , Thank you for this sharing
    • Like Like x 1
    • Friendly Friendly x 1
  10. knaufinator

    knaufinator Member Gold Contributor

    Joined:
    Nov 16, 2017
    Messages:
    39
    Occupation:
    Computer Engineer - RFID Specialist
    Location:
    akron,ohio
    Balance:
    40Coins
    Ratings:
    +48 / 1 / -0
    My Motion Simulator:
    6DOF
    GT Legends tuned up and ready to go.
    • Like Like x 2
  11. knaufinator

    knaufinator Member Gold Contributor

    Joined:
    Nov 16, 2017
    Messages:
    39
    Occupation:
    Computer Engineer - RFID Specialist
    Location:
    akron,ohio
    Balance:
    40Coins
    Ratings:
    +48 / 1 / -0
    My Motion Simulator:
    6DOF
    I want to build a Cobra kit car,.. so I am getting my practice in
    • Like Like x 1
  12. MarkusB

    MarkusB Active Member Gold Contributor

    Joined:
    Jun 30, 2015
    Messages:
    451
    Location:
    Germany
    Balance:
    3,357Coins
    Ratings:
    +432 / 1 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, Motion platform
    You have really created a fantastic piece of hardware. Congratulations!

    I also love your green screen videos. My favorite is the rollercoaster ride in this post, where I get the impression that your rig does indeed sit on the rails. Amazing!
    • Friendly Friendly x 1
  13. knaufinator

    knaufinator Member Gold Contributor

    Joined:
    Nov 16, 2017
    Messages:
    39
    Occupation:
    Computer Engineer - RFID Specialist
    Location:
    akron,ohio
    Balance:
    40Coins
    Ratings:
    +48 / 1 / -0
    My Motion Simulator:
    6DOF
    Thank you!, compliments never get old!
    • Like Like x 1