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Bruce's 2dof fullframe rig aka: the "Ratrod"

Discussion in 'DIY Motion Simulator Projects' started by bruce stephen, Jun 8, 2015.

Page 3 of 7
  1. SilentChill

    SilentChill Problem Maker

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    Yes mine are marked sparkfun on the back on all of them. Have you tested exactly how I have said above testing the output of each terminal in clockwise and counter clockwise, not just with a multimeter, with a motor touching on each output

    If you have and they are ok they could be hitting the thermal threshold if they are giving way under load possibly and shutting down. I would deffinately fit some heatsinks at least and try again
    • Agree Agree x 1
    SilentChill, Jun 28, 2015
    #41
  2. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    Yeah it was strange @SilentChill something is up. I tested mm's under load. It has a kind of dead spot just on one motor. Ill swap psu's and motors later too see if maybe it's something with motor or psu's. Don't have battery laying around that would be ideal though to eliminate psu as cause. I want to know if it's the motor so I can swap before time runs out. Just straight 12v it runs fine either direction. I'm just wondering what is the symptom of worn or burnt brushes as this is a used motor.
    bruce stephen, Jun 28, 2015
    #42
  3. SilentChill

    SilentChill Problem Maker

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    Yeah very odd i dont know what else to try. Hope you get it sorted :)
    SilentChill, Jun 28, 2015
    #43
  4. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, 6DOF
    Switching the gadgets is a good idea to find the issue. BTW active cooling is obligatory. Always.
    • Agree Agree x 1
    Pit, Jun 28, 2015
    #44
  5. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    It's the motor. Switched stuff around a couple of times. No difference. Even swapped motos. So contact seller and see. The trials and tribulations of a sim builder. Lol
    • Agree Agree x 1
    bruce stephen, Jun 28, 2015
    #45
  6. SilentChill

    SilentChill Problem Maker

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    Yeah lol nothing is ever straight forward !
    • Agree Agree x 1
    SilentChill, Jun 28, 2015
    #46
  7. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    • Winner Winner x 2
    • Like Like x 1
    bruce stephen, Jun 28, 2015
    #47
  8. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    Question... How or where do I adjust the total amount of rotation for a particular axis? Example: 160 degrees of rotation instead of 120. Is this somewhere in smc code. Sry I looked and searched but have come up with nothing. I'm sure this has been covered before. I would swear I saw this somewhere but I can't find it.
    bruce stephen, Jun 29, 2015
    #48
  9. SilentChill

    SilentChill Problem Maker

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    Axis limiting in simtools is what you need to use
    SilentChill, Jun 29, 2015
    #49
  10. SilentChill

    SilentChill Problem Maker

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    Axis limiting in simtools is what you need to use
    • Like Like x 1
    SilentChill, Jun 29, 2015
    #50
  11. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    It's at 100%. The axis at 100% in sim tools does not travel far enough. It moves about 120degrees at 100%. I want 170degrees total at 100%. How is this done. Is this scaling and how do I use it?
    bruce stephen, Jun 29, 2015
    #51
  12. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, 6DOF
    "100%" is preset by the potentiometer. Please check your gear ratio of your potis.
    • Agree Agree x 1
    • Useful Useful x 1
    Pit, Jun 29, 2015
    #52
  13. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
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    Ok ty @Pit. its not bad but maybe a little less reduction. im 39teeth large gear 17teeth small which is lil over 2:1. i'll deal with it for now but possibly will rethink pot setup.
    bruce stephen, Jun 29, 2015
    #53
  14. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    phone7_15 907.jpg phone7_15 937.jpg phone7_15 938.jpg phone7_15 939.jpg phone7_15 940.jpg phone7_15 943.jpg
    so it works
    more details in a little while. work has me sooo busy.
    • Winner Winner x 3
    bruce stephen, Jul 10, 2015
    #54
  15. eaorobbie

    eaorobbie Well-Known Member SimTools Developer Gold Contributor

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    My Motion Simulator:
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    That looks quite good @bruce stephen , once you have it all sorted please post a video for all to see.
    Top Job !!!.
    • Friendly Friendly x 1
    eaorobbie, Jul 11, 2015
    #55
  16. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    • Like Like x 1
    • Friendly Friendly x 1
    bruce stephen, Jul 11, 2015
    #56
  17. welen123

    welen123 Member Gold Contributor

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform
    very good job! i'll follow your post
    welen123, Jul 12, 2015
    #57
  18. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF

    i know its a poor quality sry. ill have to bribe my wife to help me make a decent video. there isnt any room behind the rig to set up a camera.
    • Like Like x 2
    bruce stephen, Jul 13, 2015
    #58
  19. eaorobbie

    eaorobbie Well-Known Member SimTools Developer Gold Contributor

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    My Motion Simulator:
    2DOF, DC motor, JRK, SimforceGT, 6DOF
    Its a good start, think most of us have an issue with room, would dearly love a dedicated motion sim room in the house.
    Profile tunning takes practice and time, fiddle , fiddle they come good eventually, lol I still fiddle with mine, lol.
    Very good to see ya enjoying it, that's why we build them hey !!
    • Agree Agree x 2
    • Like Like x 1
    eaorobbie, Jul 14, 2015
    #59
  20. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    Well after getting this to work and following @SilentChill and his 6 dof project I have decided to make a 12 vdc 6 dof. I am pretty sure these motors will work I can stand on arms of the motors and they hold me up without effort. If one motor can hold all of my weight plus me bouncing on the motor arm than I think 6 motors should have no problem. 1 monster for each motor seems very strong at this point I think it will be enough. I have 10 amp auto reset fuses and haven't popped one yet but the rig is very well balanced. I also stood on the end of the rig with the pedals and bounced. Motors had no issues. So I ordered 6 motors and psu's. When everything arrives I will start a new build thread. Prolly won't start construction until late august. I will post another video of the rig working today.
    bruce stephen, Jul 14, 2015
    #60
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