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IndustryArena Forum > OpenSource CNC Design Center > Open Source Controller Boards > Open Source Boards Available, Stepper Drivers and Break Out Boards
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  1. #745
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    Jul 2007
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    12
    Mr Pminmo
    Where are you .
    Please help me connect pc to this vexta driver .
    Thank you very much .

  2. #746
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    Oct 2007
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    1
    Hi everyone. my first post here, hope this is the right place. Does anyone have any bare or assembled A3986 PCBoards for sale?

  3. #747
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    May 2007
    Posts
    1
    I looking for buy PCB board too,

  4. #748
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    Feb 2009
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    1
    Hi , I am Biren from India.I want to use A3986 IC for stepping control for 90KG/cm2 Bipolar Motor with 6 Amp per phase rating.Can you help me for ckt designing?

  5. #749
    Gold Member
    Join Date
    Jun 2003
    Posts
    3312
    There is a long thread on the problems associated with the A3986 chip here.
    Phil, Still too many interests, too many projects, and not enough time!!!!!!!!
    Vist my websites - http://pminmo.com & http://millpcbs.com

  6. #750
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    Jan 2009
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    4

    Schematic and Artwork ?

    Can you double check the link you gave ? It gives me an "Invalid Article Specified error message when I follow it.

    Thanks

    Gary

    Quote Originally Posted by ynneb View Post
    Phil, there is now a new section created for " Free/Open-source CNC electronics Schematics and artwork" you can access it from here http://cnczone.com/modules.php?name=...ategory&cid=58

    If you would prefere CNCZone to host the file, please send it to admin@cnczone.com

  7. #751
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    Jun 2003
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    3312
    Quote Originally Posted by GaryStofer View Post
    Can you double check the link you gave ? It gives me an "Invalid Article Specified error message when I follow it.

    Thanks

    Gary
    What link are you looking for?
    Phil, Still too many interests, too many projects, and not enough time!!!!!!!!
    Vist my websites - http://pminmo.com & http://millpcbs.com

  8. #752
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    Jan 2009
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    4

    Schematic and Artwork ?

    Quote Originally Posted by pminmo View Post
    What link are you looking for?
    I was looking for the schematic / artwork of the open source controller.

    Ynneb gave a link http://cnczone.com/modules.php?name=...ategory&cid=58
    indicating the files where local to cnczone, but that link doesn't work for me.

    Gary

  9. #753
    Gold Member
    Join Date
    Jun 2003
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    3312
    I believe going back in time it would be this location: http://www.cnczone.com/modules.php?n...category&cid=5
    Phil, Still too many interests, too many projects, and not enough time!!!!!!!!
    Vist my websites - http://pminmo.com & http://millpcbs.com

  10. #754
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    Apr 2010
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    0
    Thank u man

  11. #755
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    Feb 2007
    Posts
    4
    Hi all. I am about to start building driver boards and the BOB while I assemble all the components to build mysef a JGRO CNC router. I have a couple of questions regarding the Open Source L297-8 bipolar driver boards you guys have done a fantastic job of developing for us DIY'ers.

    1. In the documentation for the L297-8 drivers PMinMO mentions the fact that we can use LM138/338's instead of the LM317 voltage regulators. My question is, is the LM338K a drop-in replacement for the LM317? (with obvious regard for the BCE configuration, and the maximum current rating of the L298's )

    2. The datasheet for the LM-series mentions that the usable voltage range is not from 0V to the rated maximum, but rather that the maximum rated voltage may not be exceeded between the source and load pins on the regulator. This suggests that as long as we are not regulating down by more than say the 32V allowable range of the LM338K, we can use higher voltages through the regulator. My question is, is this possible given the other components in the system such as the L297/8's? It would make my 24V salvaged steppers useful for my project.

    Any help would be appreciated. I am not an electronics guru but have been building other people's designs for years, so while I know how to put 'em together, i'm not skilled enough to make changes to them to suit my needs.

    Regards,
    Wayne

  12. #756
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    Jun 2003
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    3312
    Quote Originally Posted by Urbania View Post
    1. In the documentation for the L297-8 drivers PMinMO mentions the fact that we can use LM138/338's instead of the LM317 voltage regulators. My question is, is the LM338K a drop-in replacement for the LM317? (with obvious regard for the BCE configuration, and the maximum current rating of the L298's )
    Regards,
    Wayne
    Where do I say you can sub a LM138..LM338?

    As far as I know the LM138..LM338 are only available in TO-3 packages. The pcb for the L297-8, the LM317 is a TO-220. Two entirely different mechanical packages.
    Phil, Still too many interests, too many projects, and not enough time!!!!!!!!
    Vist my websites - http://pminmo.com & http://millpcbs.com

Page 63 of 64 135361626364

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