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  1. Replies
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    Question(s) Re: Dynamixel on a vacuum.

    I guess this is settled :) At least nothing exploded. Time will say how well it works after longer use.


    https://www.youtube.com/watch?v=U8Q7OJ68Kag
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    Question(s) Re: Dynamixel on a vacuum.

    Hey guys, I've decided to test first with a cheap hobby servo. Here's the result:

    Spoiler, it seems to work fine. I left it running for a few mins more after the video ended. This encourages me to...
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    Question(s) Re: Dynamixel on a vacuum.

    Excellent :D At least there seems to be room to go! I guess next step is to do actual tests on a vacuum, risking a servo :)
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    Question(s) Re: Dynamixel on a vacuum.

    I see.. With the minimum load the servos would receive I don't think they would overheat. The servo that will be used for the longest time will be rotating for about 30 seconds under the vacuum and...
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    Question(s) Dynamixel on a vacuum.

    Hey, here's a weird question. Has anyone tried using a Dynamixel actuator on a high vacuum environment? At the moment I'm talking about AX-12s but could be other models in the future. The load on the...
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    Question(s) Re: Using AX-12A in zero torque mode.

    Yep, in my case this is a bit of a hassle to be honest but what can you do :)
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    Question(s) Re: Using AX-12A in zero torque mode.

    Fantastic answer, I'll come back to it when I learn more about electronics :)
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    Question(s) Re: Using AX-12A in zero torque mode.

    I have a followup question. I have noticed the motors are actually softer to turn when powered off than when powered on with torque set to zero. Is that normal and why is that?

    thanks!
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    Question(s) Re: Using AX-12A in zero torque mode.

    I'm using herringbone style involute spur gears based on this

    6039

    Thanks for the help

    Edit: I see a few problems with this now, for example the pinion may be far too small, providing little...
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    Question(s) Re: Using AX-12A in zero torque mode.

    Thank you, well that's bad for me then :) I understand about the leverage but my original design was using some mechanical advantage to gain torque, the problem with this is you also increase the...
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    Question(s) Using AX-12A in zero torque mode.

    Hi, I'm very new to robotics, I'm planning to make heavy use of the AX-12A capability of reading back current position. However I noticed that (when powered off) the servos are actually quite stiff!...
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    Question(s) Re: Power layout for Dynamixel chain

    Right! That makes sense, thanks man.
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    Question(s) Re: Power layout for Dynamixel chain

    Thank you Tician that explains things. I got this diagram from xevelabs.com that might help others bumping into this thread. The only thing I don't quite understand is why is it OK to connect the...
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    Question(s) Re: Power layout for Dynamixel chain

    A followup:

    Found this related info here:



    That's almost clear but I'm not sure what "at the end of the bus" or "in place of any other cable means". It seems everyone just takes this for...
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    Question(s) Power layout for Dynamixel chain

    Hi, I've got 6 AX-12A servos and the 12V, 10A power supply, all bought from Trossen. Also using a USB servo controller. however I forgot to buy the AX-MX Power Hub. My question is about doing this...
  16. Question(s) Re: What is the connector type of Dynamixel AX-12A

    Thanks so much!
  17. Question(s) What is the connector type of Dynamixel AX-12A

    Hi all, new here. I'm looking for the name of the socket type of Dynamixel servos, the 3 pin one used in the AX models. The closest I've come is "TTL 3-Pin", but googling that only gets me Dynamixel...
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