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  • 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
  • abs32
  • abs32
05 Nov 2025 18:59
Replied by abs32 on topic Probe tripped during non-probe move deadlock

Probe tripped during non-probe move deadlock

Category: General LinuxCNC Questions

Colleague, please publish the entire part of the hal file for controlling the probe shutdown? Including the commands addf + loadrt + something like this net probepin parport.0.pin-13-in-not => and2.3.in0
  • abs32
  • abs32
05 Nov 2025 18:56
Replied by abs32 on topic Issue with G38.5

Issue with G38.5

Category: General LinuxCNC Questions

Colleague, please publish the entire part of the hal file for controlling the probe shutdown? Including the commands addf + loadrt + something like this net probepin parport.0.pin-13-in-not => and2.3.in0

vers 2.84.
  • Hakan
  • Hakan
05 Nov 2025 18:41
Replied by Hakan on topic SANGE elec IO

SANGE elec IO

Category: EtherCAT

Not so good news, but good with feedback. Will help the next guy to make a decision.
I guess the I/O module isn't EtherCAT certified if it performs so poorly?
  • Hakan
  • Hakan
05 Nov 2025 18:29
Replied by Hakan on topic Trouble with Cia402 drive configuration

Trouble with Cia402 drive configuration

Category: EtherCAT

Looks like the slaves are out of order, I mean disorder, not right numbered.
Check with "ethercat slaves" that the cia402 drive really is slave 3.
Looks to me like the Beckhoffs didn't start up properly.
  • tommylight
  • tommylight's Avatar
05 Nov 2025 17:54
Replied by tommylight on topic booten dauert lange 1min 30 sek , alles ok

booten dauert lange 1min 30 sek , alles ok

Category: General LinuxCNC Questions

OK, that needs editing the /etc/fstab file and omitting or deleting the line containing the uuid of the missing drive.
In a terminal:
sudo nano /etc/fstab
edit and save with
CTRL+o and exit with CTRL+x
Do mind that deleting or omitting the wrong uuid will fail to boot completely.
  • SvenRSA
  • SvenRSA
05 Nov 2025 17:33
Replied by SvenRSA on topic proudly presenting a Maho MH700 retrofit ..

proudly presenting a Maho MH700 retrofit ..

Category: CNC Machines

Thanks. I’m having a hard time reading the ini and HAL file I can seem to find the Scale value for the B axis in his files. And the touchy/ axis version don’t want to launch on my newer version. Was just taking a shot in dark.
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