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Looking into upgrading from Sabertooth/Arduino to Servo Motor Kits w/ Thanos

Discussion in 'Motor actuators and drivers' started by hannibal, Sep 12, 2021.

  1. hannibal

    hannibal Active Member

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    My Motion Simulator:
    6DOF
    After going through experience of build my first 6dof,
    it has been ok.
    im still trying to tweak the motion profiles.
    a year and a half later, i went through some trials and tribulations, that are still not over.

    i feel the need to go servo motor.. sometimes i find that the sabertooth/arduino can be erratic.
    i say that sabertooth/arduino works ok, but sometimes i get behaviors that are unexpected.

    most recently i have taken a flight in DCS. i turn of heave/surge and sway forces, to only have roll pitch and yaw..
    but during motion flights i feel some occasional heave-like bouncing during a straight and smooth flight, even though heave is OFF, as if there was a a small gap in which the actuators try to steady.

    physically i have a range of 250mm drive pulley that operates a 10-turn bourns hall pot.
    i dont know i feel the performance is not accurate..

    do you think servo motor is more accurate?
    it also be nice not to deal with pots/pulleys, batteries etc..
    wondering if going from sabertooth/arduino to servo motors with thanos is worth the effort?

    thoughts?

    @noorbeast @wannabeaflyer2 @BlazinH
  2. pmvcda

    pmvcda aka FlyPT

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    My Motion Simulator:
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    For now, I only remember of Motion4Sim, very similar to Thanos.
    I'm right now adding it to Mover, and it allows sending just the pose or actuators position.
    Also includes a feature that allows infinite turns in rotating actuators.
    • Agree Agree x 1
  3. hannibal

    hannibal Active Member

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    thanks for reply @pmvcda

    i think i have to acquire the servos first..
    80ST? 90ST.. or something else?

    saw @Thanos post
    looks like will be looking for this
    https://www.aliexpress.com/item/32973113245.html

    @Thanos I WISH I LISTENED TO YOU FROM THE BEGINNING..

    ugh.. power requirements..
    i have one 230VAC 10 Amp circuit
    with two 115 VAC 15 Amp circuit
    i think i can power 2x 220 VAC servo drivers..
    but have to find a model that can run from 115 VAC...

    how to set to 115 , @Thanos is that the same driver as the one you recommended?
    • Agree Agree x 1
    Last edited: Sep 12, 2021
  4. hannibal

    hannibal Active Member

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    i bit the bullet.
    ordered 2 servo kits for now.
    will order 4 more down the road.
    also got on the waiting list for @Thanos controller with the remote panel.. :)
  5. pmvcda

    pmvcda aka FlyPT

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    Not 100% sure,
    but the 80ST as the same specs ot the 90ST.
    The ST is smaller diameter, so better for an hexapod actuator in my opinion.
    SFX100 builders use the 90ST because of the size on the aluminium extrusion.
    Again not 100% sure here.
    • Agree Agree x 1
  6. hannibal

    hannibal Active Member

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    I just went for a link that @Thanos suggested... so 80ST is where i went!
    • Like Like x 1
  7. Historiker

    Historiker Dramamine Adict Gold Contributor

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    My Motion Simulator:
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    80 vs 90 is the housing size. The power ratings can be the same or different. 90s are used most often as it is the size used in the free SFX100 project files to use with 100mm aluminum extrusion. You can easily use the 80s and just make your own designs for SFX(X) or design your own rotational setup around them.
  8. Historiker

    Historiker Dramamine Adict Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino, Motion platform, 6DOF
    As for power, you can wire the motors 110AC using a 20amp circuit or two 15 amp circuits. Thanos has a video tutorial for that.

    I just use a single 220v single phase 30 amp for all seven of my motors
    EDIT: just saw that you posted the Thanos tutorial video. It did not load for me the first time as I am in a cargo ferry in the middle of the Baltic sea and have super slow internet.
  9. Historiker

    Historiker Dramamine Adict Gold Contributor

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    My Motion Simulator:
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    Oh, and the driver link that you posted above is the same as the ones that Thanos uses. AASD-15A

    EDIT EDIT OF MY EDIT: Yes, the change is absolutely worth it.
    • Like Like x 1
    • Winner Winner x 1
  10. hannibal

    hannibal Active Member

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    thanos controller on order!
    is that you Miles?
    thanks for the reply.
    im planning to upgrade my 6dof with the 80ST's
    the SFX project looks interesting... i might look use the sabertooth/arduinos for it..
  11. hannibal

    hannibal Active Member

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    i decided to go servo because, i felt like there was a small deadzone that the pot tries to find its position.
    as mention before im doing a flight without heave, and it feels like i heave every so often.
    later i like to apply encoders to my sabertooth/arduino hardware.. and build SFX100 like actuators with it..

    but trying out the servo systems for now.. everything seems fascinating!

    you build looks wild. you have to make a video with DCS sometime on it!
    Last edited: Sep 15, 2021
  12. hannibal

    hannibal Active Member

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    hey, if i am getting a couple for the 80st... is the shaft 19mm?

    what size coupler if i am connecting to an SFU1605 ball screw?

    @Historiker @Thanos @noorbeast
    Last edited: Sep 21, 2021
  13. Historiker

    Historiker Dramamine Adict Gold Contributor

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    My Motion Simulator:
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    All of the dimensions are listed in the link where you bought them, go there and scroll down
    • Agree Agree x 1
  14. hannibal

    hannibal Active Member

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    im reading 10mm for the 1605 ball screw, and 19mm for the 80st servo motor.
    just asking here just to make sure!
  15. Thanos

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

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    My Motion Simulator:
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    I was trying my best to demonstrate why real servomotors are the best route... :cheers
  16. Thanos

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

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    My Motion Simulator:
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    The 80ST-M02430 shaft size is 19mm diameter, not sure what is the leadscrew shaft diameter...
  17. hannibal

    hannibal Active Member

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    My Motion Simulator:
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    looks like i have some work to do..
    my 80st-m02430 motors came in.

    and.. i see i have work to do..

    so basically for each motor,
    1) i have to buy a 25 pin cable,
    2) perform the power cable replacement to make sure it is shielded
    3) remove the key shaft from the servo motor
    answer - use M3 screw to pry out

    figure out how to plug servo drivers in the apartment..

    I have one 230V 20 amp outlet, and two 115V 20 amp outlets in my apartment.. anyone can give me advice about how to setup drivers, since i have limited power?

    my first step
    • Like Like x 1
    Last edited: Oct 6, 2021
  18. hannibal

    hannibal Active Member

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    My Motion Simulator:
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    one of the reasons i didnt go servo motor in the first place was power concerns.
    i live in an apartment..

    but powering a DC based sabertooth arduino was no problem at all...
    i need advise on going AC servo motor power reuqirements..

    Do you think this power configuration will work ? Anyone? please.. :)
    diagram V4.jpg


    also learned that having the 1 pole breaker for 230 is not recommended, because if one trips, i could have 115V in the system...
    Last edited: Oct 6, 2021
  19. hannibal

    hannibal Active Member

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    My Motion Simulator:
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    a month later, i am up with thanos and servo motor.
    feels good so far , still setting up for i have completed the hardware conversion.
    @Thanos is THE BEST

    Screenshot_20211107-111655_Gallery.jpg Screenshot_20211107-111815_Gallery.jpg Screenshot_20211107-111809_Gallery.jpg Screenshot_20211107-111646_Gallery.jpg Screenshot_20211107-111750_Gallery.jpg Screenshot_20211107-111655_Gallery.jpg Screenshot_20211107-111815_Gallery.jpg Screenshot_20211107-111809_Gallery.jpg Screenshot_20211107-111646_Gallery.jpg Screenshot_20211107-111750_Gallery.jpg
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  20. hannibal

    hannibal Active Member

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    REST IN PEACE
    Screenshot_20211107-111757_Gallery.jpg
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