Plasma THC

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  • February 7, 2016 at 1:56 pm #9340
    geroswen
    Member

    Hello,

    I’m working on project to swap old DOS powered plasma control system and servo motor drive to TinyG with stepper motors.

    I have X a Y axes working already. Waiting for new gears, belt and switches for Z axis and air driven probe tool.

    However there is one problem that I cant deal with. Is there any way to use THC (torch height controller) with TinyG? I’m using an older model of ForCUT 100 from Formica

    Thank you for any tips.

    • This topic was modified 8 years, 9 months ago by geroswen. Reason: wrong link
    February 8, 2016 at 6:15 am #9342
    cmcgrath5035
    Moderator

    My Czech not very good(non-existant, actually 🙂 ).
    Aware of any references in English available?
    Google Translate not much help.

    It would seem likely you will need I/O that tinyG does not have on-board.
    Some folks are using RasPi 2 in conjunction with tinyG.

    What do you plan to use to support CAM and GUI?
    There is some integration of control via RasPi in Chilipeppr.

    June 1, 2016 at 5:48 pm #9726
    geroswen
    Member

    Hello, long time no see 🙂

    I have my plasma cutter working now, but still without THC function.

    I have an idea of how to make it working and some tips would be more than welcome. I’m going to connect tinyG’s J19 output -> Promo Elektronika Compact THC SD -> external driver for Z axis.

    I’m using Nema 23 with integrated planetary gearbox for Z axis. Can you recommend me external driver, which is verified to work with tinyG please?

    I will post full documentation of my system as soon as its finished. Thank you!

    June 1, 2016 at 9:57 pm #9727
    cmcgrath5035
    Moderator

    I have no direct experience.
    Gecko 540 drivers are talked about a lot, you may need 3.3V to 5V logic converters.
    There is a lot of action/new products in this arena.
    Units compatible with Step/Dir interface used by tinyG should work, but you will have to research interface specifications.

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