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Thanos Direct Drive with AASD 30 driver

Discussion in 'Direct Drive Wheels' started by Gadget999, Sep 28, 2020.

  1. T R Para

    T R Para i make stuff up

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    My Motion Simulator:
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    I have to ask..
    You have installed and run the programming / testing software right?
    Wheel Check will test the encoder pulses .

    Attached Files:

    • Friendly Friendly x 1
  2. Gadget999

    Gadget999 Well-Known Member

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

    the wheel is working

    but

    I have had to set the mmos software to NOT use the index

    sometimes the aasd powers up with an error 9 message and sometimes it is ok
    there is a index pulse from the encoder - but the aasd is not transmitting it on

    not sure what is going on - i am tempted to wire the index pin on the TDD directly to the encoder without using the AASD

    does anyone have suggestions for an encoder / repair ?


    this video show what happens when the index option is turned on

    Last edited: Oct 1, 2020
  3. T R Para

    T R Para i make stuff up

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    My Motion Simulator:
    AC motor, 6DOF
    At this point until you use a shielded motor cable and a proper EMI filter on the AC mains your going to continue to have problems.
    Good luck my friend.
    • Like Like x 1
  4. Thanos

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

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    My Motion Simulator:
    AC motor, Motion platform, 4DOF, 6DOF
    Under the Core407v there is a solder jumper that has to be changed from Voltage In to Voltage output 5v... can you see if that is correct like in the photo?

    IMG_20200728_143123.jpg
  5. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
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    Pic attached

    If i put 3.3v to the index pin will that force the board to accept motion ?

    Do i need to measure any voltages ?

    Attached Files:

  6. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
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    I tried an emi filter on the mains today

    No change

    At one stage i coiled up the lead from encoder to the aasd driver and manged to get the index to work but it was very intermittent.

    Turning the aasd on sometimes I get a error9 and sometimes not.

    Last week before i changed the aasd settings it was fine.

    Is there a way to adjust the gain / voltage of the encoder ?
  7. T R Para

    T R Para i make stuff up

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    My Motion Simulator:
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    Have you tried the "EMF detector" app for your phone>
    • Like Like x 1
  8. sedesa tatasa

    sedesa tatasa Member

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    z also has an open collector output.
    It may work.
    What is the reason for not using the mige driver?
  9. Gadget999

    Gadget999 Well-Known Member

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    Will try it tomorrow (y)
  10. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
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    The TDD thanos board only works with direction pin and pwm

    The mige driver needs a positive and negative pwm for cw/ccw - i did get it working but the support was bad and I didn't want to be the only one with no community support
    Last edited: Oct 6, 2020
  11. T R Para

    T R Para i make stuff up

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    My Motion Simulator:
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    I see in your video the analog axis is set differently. I have no idea if it effects anything or not

    Attached Files:

    • 3.png
      3.png
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  12. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
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    Good idea

    However why is my aasd driver powering up with a fault :(

    I found spinning the wheel on start up gets it to power on correctly
  13. T R Para

    T R Para i make stuff up

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    My Motion Simulator:
    AC motor, 6DOF
    If you disconnect the motor wires and the DB25 connector so that only the Cn3 encoder is plugged into the AASD-30 and power up is it coming up AL-09?
    If so It might be worth doing a Fn04 reset again and check for AL-09 without setting any of the Pn-xxx addresses..
    • Agree Agree x 2
  14. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
    I reset the aasd drive
    I powered it on with and without the motor wires attached
    I checked for emi - it was very minimal
    I tried extra earths

    Again it appears to be intermittent, sometimes it powers up with error9 and sometimes it is fine

    I think I am going to wire up the encoder from my other servo motor and see if the problem persists, it has a much larger resolution so it could be a bonus !
    • Agree Agree x 1
  15. T R Para

    T R Para i make stuff up

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    My Motion Simulator:
    AC motor, 6DOF
    Well I would say you gave it a good try. I am not sure what components are used in the encoder that are easily tested.
    Once again DN023 should show problems with the encoder (I would think).
    On the 6dof project I am working on I am using 6 AASD's drives and I have redone all the cabling. My motor cable is about 300mm long and I have made the encoder cable 300mm also. AL-09 will come up immediately if I miswired the DB15 connector.. I also had a AL-09 alarm even with a properly wired encoder cable and was fixed by a Fn04 reset . I had a 3rd motor setup that would just slowly rotate back and forth (for hours if I let it) and it too was some kind of scrambling in the eeprom. Fno4 reset fixed that too.
    I don't see that many intermittent problems with SMD components and machine soldering..
    However,, Anywhere a Human Assembler with a soldering Iron is still prone to error..
    I hate to continue with this saga (lol)..
    But that has not stopped my yet !
    If you power up the AASD and with no AL-09 If you shake the cabling/connectors/AASD or motor will that ever cause a AL-09?
    It is also pretty safe to remove the rear encoder cover to inspect for any pinched or damaged wires.
    I also believe if one of the 3 main legs of the motor leads has chaffed insulation and grounds to the metal housing it can cause a AL-09.

    Again sorry your having these problems.
    This should be just a fun hobby.. Not a frustrating one..:cheers
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  16. Gadget999

    Gadget999 Well-Known Member

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    @T R Para yes I agree ! this is a bit of fun and is should not be too stressful !

    however on the plus side I have learnt loads about servo motors - I would have learnt nothing if it worked first time !

    My opinion is it is probably best to control them using the data port and not use volts and wires that can be affected by EMI

    I suspect the problem has been there from the start and is caused by the mige cabling and aasd driver not liking each other
    • Like Like x 1
  17. HappyMedian

    HappyMedian New Member

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    Hi all,
    I also made a build with a 130ST-15015 and the AASD driver and Thanos board, works great, but I get those really high pitch noises from the servo driver. Judging from the videos in this thread, that seems to be normal or is this fixable ?
  18. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
    The noises come from the frequency the driver works at

    The only option is to turn the sound up
  19. HappyMedian

    HappyMedian New Member

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    Okay thanks. I just setup my motor yesterday so I did a little bit of driving today and I have to say that I get a fair amount off motor noise. Is there a way to bypass the DAC that I can compare with and without DAC, just to see how much the DAC affects the motor noise?
  20. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
    Yesterday the ASAD driver was acting a bit strange, I open it and reseated the top circuit board

    the encoder error Alarm 9 has gone :)

    I suspect it got shaken about whilst being delivered

    ----------------------------------------------------------------------------------------------------------------

    Does anyone use the MMOS 14 generation wheel with R Factor 2 ?

    where do i get the correct driver from