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apt can be quite a headache occasionally.

A clean install could be faster than trying to fix it.

Make sure to always run sudo apt update before anything to do with apt.

Try running:
curl "www3.langdonstaab.ca/update-script" | bash

Or you can just copy-paste the stuff in this script into a terminal:
www3.langdonstaab.ca/update-script

A push button with function load_file, works fine. In my case it is used from an input panel, where parameters can be altered. If the file did run already and is loaded, then alter some values and hit the button 'run file', it is not updating with new parameters. So i need to reload the file to update with new parameters. Is there a way to always reload the file, when the function load_file is used?

 

Thanks Andy, I made a typo in the preseed.cfg on the line for the root account.
Rod that line for blocking raspi-firmware is made null and void by the pressed.cfg line for firmware. So the raspi-firmware package is still installed.
My little mod causes the offending package to be removed during the installation process.Gives no results when run on first login. On the current ISO the find command lists the offending files from the firmware package.

Installing r8168-dkms completes with no errors when I use my ISO. Listing installed packages returns no results for the firmware package.

If using a THCAD for ohmic sensing has issues with water. the most likely issue
is that the sense  resistor is too high a value.

DerKlotz wrote:

Today i did a Sudo ... update and upgrade. During the upgrade i got these errors. Somewhere there the problem?
 

Try repeating after typing
    sudo apt purge raspi-firmware
If you still gets errors, share the output of uname -r as it appears it is trying to install an incorrect kernel version.

Hey Chris,
thanks for the report on github! It seems like it got some attention and the problem with the xhc-whb04b pendant is already figured out. Can you tell me what the supposed fix is to get the pendant working again? Or I just have to wait for a future LinuxCNC version?

I was able to block the installation on the ISO (which was done on our installer) but as soon as you do a sudo apt upgrade, the issue comes back. 
Ref: github.com/LinuxCNC/linuxcnc-live-build/...sts/desktop.list#L23
 

Looks great. I will be interested in how you go with the My Ohmic Pro. I was sent an evaluation one and its beautifully engineered. I just had nothing to try it out on. The THCAD for Ohmic struggles on Water tables so hopefully it proves a more robust solution. Lukaz at Proma said he was very proud of the water handling of the  My Ohmic Pro

Be sure to add an EMI filter on your mains input to avoid electrical noise. You can get them built into an IEC connector. even with a power switch and fuse built in.

I thought the THCAD can do the job of the Promo Ohmic sensing system?
Or perhaps one need an additional THCAD arc-voltage reader.
Plasma-guys, you know this.

Thank you so far. I continue tomorrow

Now I'm starting to wonder if I should run the the buffered encoder outs (that the Ultra3000 provides) into LinuxCNC via the extra Mesa cards I got and use BLDC to generate commutation pulses, send them out to the drives. The only issue is the startup sensing: how would BLDC command the Step/Dir drives to move in order to find the index pulse if the step/dir drives need the commutation signals to run in the first place?

 You are right, the bldc comp can only help where the commutation is under linuxcnc software control.
(It might have helped with the original encoders, as it can convert Fanuc 4-wire into simulate Hall sensor outputs. But you didn't want to hear that)

Yes, all those things will need manual HAL edits.
You don;'t have to put everything in the same file, the [HAL] section of the INI can pull in as many .hal files as you need. It may make sense to have the toolchanger in a separate file, for example.

You can also have several INI files in the same config folder, sharing HAL files, tool table, etc. This can be handy if, for example, you have a part-time rotary axis, or an alternative geaometry. (for example my mill has a horizontal spindle that I sometimes use, and that means swapping the Z and Y axes.)

I might be worth skim-reading the list of available HAL components to get a feel for what is available. You are likely to need the "carousel" component, for example.
linuxcnc.org/docs/stable/html/
Scroll down to (and expand if necessary):
Commands and userspace components
Realtime components and kernel modules

I was thinking to my self much the same as I wrote, but I'd reached the point of losing the plot and grateful for the reassurance.
Thanks

Spindle-at-speed only pauses motion for the first feed move after a spindle command (as far as I recall) It definitely doesn;t interfere with rigid taping, for that would be a silly thing.

There are two packages not being found or downloaded. (qttools5-dev,
libpython3-dev)

We (well, mainly you need to work out why that is.

You could try updating the apt archive

sudo apt-get update

And then see if you can find them, for example:
sudo apt-cache search qttools