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  • PCW
  • PCW's Avatar
05 Nov 2025 21:10
Replied by PCW on topic Bricked Mesa 7i92T

Bricked Mesa 7i92T

Category: Driver Boards

What version of mesaflash and LinuxCNC do you have?

mesaflash --version


To install the latest LinuxCNC version, go to github.com/LinuxCNC/mesaflash
 then scroll to the bottom for "Quickstart" instructions.
  • Hakan
  • Hakan
05 Nov 2025 21:07
Replied by Hakan on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

MonoKrom - QtPyVCP GUI for PlasmaC and Mill

Category: QtPyVCP

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'
  • bentiggin
  • bentiggin
05 Nov 2025 21:03
Replied by bentiggin on topic High frequency ohmic struggles

High frequency ohmic struggles

Category: Plasmac

There is a yellow blinking light. I'll try to see if I can measure anything on 1x with my multimeter.
Thanks for all your help and the awesome mesa products.

On another forum, I saw the os3t-01 from robot3t.com. It's an ohmic sensor that can supposedly handle hf.
Does anyone have any experience with this company or their products?
  • FPVUALAB
  • FPVUALAB
05 Nov 2025 20:59
Replied by FPVUALAB on topic Bricked Mesa 7i92T

Bricked Mesa 7i92T

Category: Driver Boards

Hello! Please tell me how to update Mesaflash to the latest version and why it is missing in the latest version of LinuxCNC? Also, please tell me which firmware version I need to flash the board to get 4 axes with 4 encoders? Thank you very much!
  • peterpan
  • peterpan
05 Nov 2025 20:52
Replied by peterpan on topic Trouble with Cia402 drive configuration

Trouble with Cia402 drive configuration

Category: EtherCAT

You are completely correct. Do you have a clue as to why slave 3 switched to slave 0, and is there a way to force the order?
  • Hakan
  • Hakan
05 Nov 2025 20:40
Replied by Hakan on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

MonoKrom - QtPyVCP GUI for PlasmaC and Mill

Category: QtPyVCP

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.

 
  • PCW
  • PCW's Avatar
05 Nov 2025 20:26
Replied by PCW on topic High frequency ohmic struggles

High frequency ohmic struggles

Category: Plasmac

Do you have a blinking yellow light on the THCAD?

If you set  the THCAD frequency divider to 1X you can probably
measure a change in the frequency as a voltage change on the F+
or F- relative to ground. Not sure of the polarity but full scale
should be about 2.5V at full scale and maybe 0.3V at 0V

I would need to study a bit about the probe wiring.
 
  • Gogonfa
  • Gogonfa
05 Nov 2025 20:05
Replied by Gogonfa on topic Help with Wireless Handwheel XHC-WHB04B-6 (wrong Product ID)

Help with Wireless Handwheel XHC-WHB04B-6 (wrong Product ID)

Category: General LinuxCNC Questions

Thanks @rodw,
today I built LinuxCNC 2.10-pre directly from the git repository, using the 6.12.48+deb13-rt-amd64 real-time kernel together with the Probe Basic GUI.Getting Probe Basic up and running was a bit tricky — some of the Python libraries it relies on are deprecated and no longer available in Python 3.13, so I had to make a few adjustments. But it’s working now!I also changed the ID for the wireless handwheel (not yet tested), and EtherCAT is running as well.
  • bentiggin
  • bentiggin
05 Nov 2025 19:51
Replied by bentiggin on topic High frequency ohmic struggles

High frequency ohmic struggles

Category: Plasmac

Since replacing the 7i97t, I haven't had any of the ohmic wired up while the plasma is running. I have only tried to get it working with the plasma off, so the 7i97t encoders should be fine.
I was more referring to the thcad output.
Can measure voltage between f+ and f- with the ohmic circuit open and again with it closed to test the thcad?

For the capacitor you mentioned, would I wire the torch tip to capacitor and the other end of the capacitor to star ground. Then run a separate wire from torch tip to thcad? Or would I wire both the star ground and the thcad to the capacitor?
  • MaHa
  • MaHa
05 Nov 2025 19:47
Flex GUI - Axis Position Labels was created by MaHa

Flex GUI - Axis Position Labels

Category: Flex GUI

A question about Axis Position Labels. It says labels including all offsets. In 'dro_lb_z' G43 / G49 has no effect
  • Sandro
  • Sandro
05 Nov 2025 19:37
Replied by Sandro on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

MonoKrom - QtPyVCP GUI for PlasmaC and Mill

Category: QtPyVCP

And remove the [url= or [/url] from the sources. I don't know what is going on with this editor.
  • Sandro
  • Sandro
05 Nov 2025 19:34
Replied by Sandro on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

MonoKrom - QtPyVCP GUI for PlasmaC and Mill

Category: QtPyVCP

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.
  • Fastfred
  • Fastfred
05 Nov 2025 19:26
Gmoccapy tool setter block height overrides G54 zero was created by Fastfred

Gmoccapy tool setter block height overrides G54 zero

Category: Gmoccapy

Hi I use freecad to generate the g-code to linuxcnc. The cnc homes and tool setter works my question is when i set block height to the top of my work piece the tool offset works what happing now is if I try to zero g54 to a work piece the z zero gets overwriten by the block height.I thought the block height was for initial setting of tool setter. The gcode file ask for tool M6 T7 G43 H7  at the start . What Iam I doing wrong how would I change this to tool offset is from work piece ?  
  • DerKlotz
  • DerKlotz
05 Nov 2025 19:09
Replied by DerKlotz on topic Try to activate Gladevcp with setp gladevcp -> Linuxcnc

Try to activate Gladevcp with setp gladevcp -> Linuxcnc

Category: GladeVCP

Great hint. I´ll check soon
  • PCW
  • PCW's Avatar
05 Nov 2025 19:03
Replied by PCW on topic High frequency ohmic struggles

High frequency ohmic struggles

Category: Plasmac

Ohmic sensing on a HF start plasma torch is very tricky because of the 20 or so KV
Tesla coil used for starting the arc

I suspect you would need a large (say 1 UF 600V) capacitor from the probe to table
 to bypass the high voltage high frequency  spike from a probe strike to ground.


To check 7I97T encoder inputs, set the encoder to TTL mode, then ground the
A+ B+ and IDX+ pin in turn and see if the corresponding pins change in halshow.

Pin names would be like:

hm2_7i97.0.encoder.00.input-a
hm2_7i97.0.encoder.00.input-b
hm2_7i97.0.encoder.00.input-idx
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