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Showroom 2dof frame mover 24v arduino sabertooth

Discussion in 'DIY Motion Simulator Projects' started by matthew loomis, May 28, 2017.

  1. matthew loomis

    matthew loomis Member Gold Contributor

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    Thanks to the help of this great community I have finished my Motion Simulator. I had a blast building modifying tuning and sharing this rig. Here is some video

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    Last edited: Jul 16, 2017
  2. Ads Master

    Ads Master

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  3. matthew loomis

    matthew loomis Member Gold Contributor

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    Started my first motion sim chair today. Got the base welded up and added an old driveshaft uv joint. Scavenged up some 24 volt wheelchair motors. I dont know anything about electronics. With these motors looks like i need a sabertooth 2x32 and an adruino.

    I feel pretty good about the project so far. Especially the welding. First time with a mig. Thank God for blending wheels.
    [​IMG]
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    Last edited: Jul 16, 2017
  4. noorbeast

    noorbeast VR - The Next Generation SimTools 2.0 Beta Tester

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    My Motion Simulator:
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  5. matthew loomis

    matthew loomis Member Gold Contributor

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    Day 2 progress
    [​IMG]
    [​IMG]
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  6. RandomCoder

    RandomCoder Active Member Gold Contributor

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    I'm guessing that all or most of the steel frame has been salvaged from the exercise machine that can just be seen in the background?
    Very interested to see if the microwave also makes it into the build! ;)

    Excellent work, looks really good. I personally prefer seeing steel bent through 90 rather than welded as it gives a more commercial look. IMHO I think that your sim has the potential to be one very professional looking build.
    :popcorn
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  7. ferslash

    ferslash Active Member

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    woow looks differente keep posting :popcorn
  8. matthew loomis

    matthew loomis Member Gold Contributor

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    Ok day 3. Chair is all fabbed up. Finally spent some money today. 2 cans of spay on Berliner.
    Now the hard part. I need to order the electronics. Can I use led switching power supplies? Any guess on wattage? No info on these wheelchair motors.
    Also, what do you guys use for motor arms?
    [​IMG]
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  9. noorbeast

    noorbeast VR - The Next Generation SimTools 2.0 Beta Tester

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    My Motion Simulator:
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  10. matthew loomis

    matthew loomis Member Gold Contributor

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    Day 4. Found some actuator arms that were the right size. Found 2 tie rods that were a little too short. Made some temporary locks so I can use it static while I order parts.
    [​IMG]
    So for parts this is what I think I need. Look right?
    [​IMG]
    And these I'm not sure of
    [​IMG]
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  11. SilentChill

    SilentChill Problem Maker SimTools 2.0 Beta Tester

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    My Motion Simulator:
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    Your parts list looks good to me, you may need another PSU but you can just get an extra one if needed and put it in parallel if needed :)

    Edit: You have put x2 PSU's my bad :D
  12. matthew loomis

    matthew loomis Member Gold Contributor

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    Ordered parts today, changed the power supply for 1 600 watt meanwell.

    Got some numbers from the chair. 10 degree x2 pitch and 15 x2 roll. Pivot is 15" from mount, 14" wide. 3" ctc and 10" tie rods.
    Cg is good, chair will stay put just from motor resistance. It's also adjustable but right on for my position.
    Ran numbers through the sim calc thing I found here and looks like I'll probably need seatbelts. I don't have good numbers from these motors but every thing looks good so far
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  13. matthew loomis

    matthew loomis Member Gold Contributor

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    Mailman left a present for me today.
    [​IMG]
    I'm kinda intimidated. First thing sabertooth was not recognized on a usb 3.0 port. Switched ports and got it working with describe. My ps will be a while so I might play with some rc stuff. I need to read some more posts on these things.
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  14. RandomCoder

    RandomCoder Active Member Gold Contributor

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    A good idea for anyone purchasing an Arduino for the first time is to buy a starter kit. Typically here in the UK an Arduino R3 Uno starter kit (replica) costs less than £30 and for that you get loads of stuff to tinker with and over half of what is needed for a basic 2DOF model (you probably only need to purchase one extra servo motor!).
    But the point is that you also get chance to experiment with the Arduino and learn what it is capable of.

    Personally I've enjoyed tinkering with my starter kit and have even enrolled the 'help' of my son. For him it's the first time he's experienced electronics and this is a nice safe environment for him to learn. ;)
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  15. matthew loomis

    matthew loomis Member Gold Contributor

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    Success. Wired up everything and tested with a 12v motor and power I had around. Made it all the way through the first setup. I can control a motor by a pot. Fast, slow, forwards, backwards. I'm super excited.
    [​IMG]
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  16. matthew loomis

    matthew loomis Member Gold Contributor

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    Finished the fab work. Out of the shop into the house! Just waiting on the power supply.
    Took a couple nice pics
    [​IMG]
    [​IMG]
    [​IMG]
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  17. matthew loomis

    matthew loomis Member Gold Contributor

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    I couldn't resist trying it with my benchtop power supply. Max 15v 11a. The mailman needs to hurry up.
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  18. Andrew M

    Andrew M P_H_O_3_N_I_X

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    My Motion Simulator:
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    Excellent work ! You made a rapid progress. Is it all done and already tested with some game like a LifeForSpeed with SimTools already ?
  19. matthew loomis

    matthew loomis Member Gold Contributor

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    Power supply came in today. This thing is a beast! Had some issues with a pot coming loose and had a few rotations. Had the whole thing hopping! It has to weigh 200lbs. I am just shy of 300 myself and it throws me around too.
    And I was worried

    That said, I need new motor arms. These are already bending. I think I need to bite the bullet and buy 2 1/2" keyed shaft hubs and weld up some steel arms.

    I don't have my sim tools licence yet. Going for the diy one and am about 10 days shy on time.
  20. matthew loomis

    matthew loomis Member Gold Contributor

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    Tightened up some of the issues. Made new arms out of bike pedals. Had to make the clamp setup and keyway.
    [​IMG]
    Then I found some wobbles for the pots and a collar that fits the motor shaft and wobble.
    [​IMG]
    Should be a lot easier to tune now
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  21. matthew loomis

    matthew loomis Member Gold Contributor

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    Some more patch work today. Changed motor mounts, added some bracing.
    [​IMG]
    [​IMG]
    Now I'm trying to tune it. Have the pots all right but seem to pick up constant small variations, even with everything off. Can't seem to get it to tune at all. Oscillations everywhere. To be honest I'm just starting this but I had it way better before. It could hold position at least. And I could move it with the slide. Now I can't even get it to home.