MonoKrom - QtPyVCP GUI for PlasmaC and Mill

tommylight
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04 Aug 2025 23:40 #332858 by tommylight

Replied by tommylight on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

Added 2 more.
@tomapc
@toma.cnc1
@toma.3d
@tomaberisha5688
Reminds me, i have to fix the name on the last one as it was the first one i registered.

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Sandro
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19 Oct 2025 19:53 #336722 by Sandro

Replied by Sandro on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

Hello everyone

After seeing your video (looks really great by the way), I wanted to check out MonoKrom as well. However, following the instructions on the QtPyVCP repo, I fail at the step of installing MonoKrom itself. The apt source seems not be available anymore.

www.qtpyvcp.com/install/apt_install.html

$ sudo apt install python3-monokrom

Greetings Sandro

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Joco
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22 Oct 2025 21:16 - 23 Oct 2025 05:11 #336895 by Joco

Replied by Joco on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

The standard instructions are for stable releases. Monokrom is still in development. To enable access to development you need to adjust the sources line in /etc/apt/sources.list.d/kcjengr.list to read:deb [arch=arm64] repository.qtpyvcp.com/apt develop main

NOTE: the arch= on your install migh be different. Do no change that part of the entry.

Cheers.

Last edit: 23 Oct 2025 05:11 by Joco.

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Sandro
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03 Nov 2025 19:20 #337778 by Sandro

Replied by Sandro on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

Thank you Joco!

This works and I'm able to control my plasmacutter. I really like the interface.

I'm now only facing an issue loading g-code. I'm using the plasmac post processor for Sheetcam which outputs .tap files. When I load a file, I get the message “unknown word where unary operation could be”. I just assume, it has something to do with the filte section in my INI-File.

[FILTER]
PROGRAM_EXTENSION       = .ngc,.nc,.tap GCode File (*.ngc, *.nc, *.tap)
ngc                     = plasma_gcode_preprocessor
nc                      = plasma_gcode_preprocessor
tap                     = plasma_gcode_preprocessor

Is it possible, that the preprocessor cannot interpret my .tap. file?

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rodw
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05 Nov 2025 08:02 #337871 by rodw

Replied by rodw on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

There is a sheetcam setting to set the file extension. I always output .ngc files but you can set linuxcnc to open tap too

The following user(s) said Thank You: Sandro

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Hakan
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05 Nov 2025 09:02 #337874 by Hakan

Replied by Hakan on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

I tried to install Monokrom and installed python3-monokrom.
Then it stopped.
monokrom_plasma --install didn't do anything useful as far as I can see.Couldn't find the way forward.

Can some outline the steps to install monokrom. I have a qtplasmac system I want to test this on.

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Sandro
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05 Nov 2025 19:34 #337904 by Sandro

Replied by Sandro on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

This is just from the top of my head. I do not know if all steps are necessary:

1) Prerequisites for python3:

sudo apt install python3-pyqt5 python3-dbus.mainloop.pyqt5 python3-pyqt5.qtopengl python3-pyqt5.qsci python3-pyqt5.qtmultimedia \
python3-pyqt5.qtquick qml-module-qtquick-controls gstreamer1.0-plugins-bad libqt5multimedia5-plugins pyqt5-dev-tools python3-dev \
python3-setuptools python3-wheel python3-pip python3-six python3-docopt python3-qtpy python3-pyudev python3-psutil python3-markupsafe \
python3-opengl python3-vtk9 python3-pyqtgraph python3-simpleeval python3-jinja2 python3-deepdiff python3-sqlalchemy git python3-distro \
python3-serial

2) Then I followed those instructions for a development install: www.qtpyvcp.com/install/dev_install.html

3) Adding:

read:deb [arch=arm64] [url=https://repository.qtpyvcp.com/apt]repository.qtpyvcp.com/apt[/url]

to the sources list in:

/etc/apt/sources.list.d/kcjengr.list

Note that if you have an x86 64-bit CPU it should be something like

read:deb [arch=amd64] [url=https://repository.qtpyvcp.com/apt]repository.qtpyvcp.com/apt[/url]

4) Finally:

$ sudo apt install python3-monokrom

As mentioned, this is just as I roughly remember it. I could be off here. I've tried a lot of things till I was successful.

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Sandro
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05 Nov 2025 19:37 #337905 by Sandro

Replied by Sandro on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

And remove the [url= or [/url] from the sources. I don't know what is going on with this editor.

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Hakan
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05 Nov 2025 20:40 #337910 by Hakan

Replied by Hakan on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

I few of the dependencies were missing.

debian@plasma:~$ monokrom_plasma --install
Traceback (most recent call last):
  File "/usr/bin/monokrom_plasma", line 8, in <module>
    sys.exit(main())
             ~~~~^^
  File "/usr/lib/python3/dist-packages/monokrom/plasma/__init__.py", line 8, in main
    monokrom.main('plasma', opts)
    ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/monokrom/__init__.py", line 104, in main
    copy_tree(src, os.path.expanduser('~/linuxcnc'), update=1)
    ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/setuptools/_distutils/dir_util.py", line 127, in copy_tree
    raise DistutilsFileError(f"cannot copy tree '{src}': not a directory")
distutils.errors.DistutilsFileError: cannot copy tree '/home/debian/.local/share/monokrom/linuxcnc': not a directory

I hope the --install is the next step.

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Hakan
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05 Nov 2025 21:07 #337914 by Hakan

Replied by Hakan on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

Okay, I just copied the linuxcnc config directory from monokrom-vcp to my config directory.

Go sim.monokrom/plasma

debian$ linuxcnc xyz.ini

Gives the following, missing module imp which is deprecated when searching for it.

Traceback (most recent call last):
  File "/usr/bin/monokrom_plasma", line 8, in <module>
    sys.exit(main())
             ~~~~^^
  File "/usr/lib/python3/dist-packages/monokrom/plasma/__init__.py", line 8, in main
    monokrom.main('plasma', opts)
    ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/monokrom/__init__.py", line 111, in main
    qtpyvcp.run_vcp(opts, config_file)
    ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/qtpyvcp/__init__.py", line 26, in run_vcp
    run(*args, **kwargs)
    ~~~^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/qtpyvcp/app/__init__.py", line 129, in run
    launch_application(opts, config)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/qtpyvcp/app/launcher.py", line 70, in launch_application
    app = _initialize_object_from_dict(config['application'])
  File "/usr/lib/python3/dist-packages/qtpyvcp/app/launcher.py", line 205, in _initialize_object_from_dict
    obj = _get_object_by_referance(provider)
  File "/usr/lib/python3/dist-packages/qtpyvcp/app/launcher.py", line 193, in _get_object_by_referance
    return getattr(importlib.import_module(modname), attrname)
                   ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/usr/lib/python3.13/importlib/__init__.py", line 88, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 1026, in exec_module
  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
  File "/usr/lib/python3/dist-packages/qtpyvcp/app/application.py", line 7, in <module>
    import imp
ModuleNotFoundError: No module named 'imp'

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