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It could be done. It's probably how I would do it if I had to control an injection moulding machine, but only because I already know how to use LinuxCNC.
(when your only tool is a hammer....)

Getting temperature into LinuxCNC HAL is not the easiest thing. One option is:
linuxcnc.org/docs/stable/html/man/man9/max31855.9.html

First such machine i fixed was back in 1990 !!!
They are complicated machines, but all are made from simple parts, so look at it as separate parts, makes it much easier.
The main hurdle with retrofitting such machines is the logic and interlocks, writing down whatever you already know will help a lot during programing.

TP - Trajectory Planner ( see src/emc/tp/tp.c)
TC - Trajectory Controller. (see src/emc/tp/tc.c))

but if there's no new tutorials out there to guide newbs, then i might as well not waste my time and just install windows.

Makes me wonder why we bother maintaining about 1500 pages of written documentation:

linuxcnc.org/docs/html/

Yes, that's a solution. I'll think about it, if I start modifying the code (I'm not very good at programming) or if I find a solution to add additional control switches (from my window, this solution seems the easiest to me)

Probe Basic is written in Python, you could modify it.

Try a different layout with a 2-element V-box with a 2-element H-box in the top box.

I think that your meter is being constrained to be same width as "Licht" as it is in the same column.

I've already looked through the list, but I didn't find anything conclusive.
It was just in case there was something I'd missed or done wrong.
So your comment supports my analysis, but not really the right one for me. I'll have to find another solution...

Hello,
i created a small ui with glade with two leds, two buttons and a Hal_Meter. How can i enlarge the Hal_Meter? Attached is a screenshot of my main window.

Thatś it. Thanks

My custum_postgui.hat is now correct
#[Spindel]
net spindle-vel-cmd-rpm => gladevcp.Spindel1

I guess i really have some problems with reading signals in the machine.hal. I thought in my case "spindle.0.speed-out" give me directly my float value. Have to write a small manual for me.

This has been asked before on here (but don't bother looking, there was no helpful answer).

If you load the system then open a terminal and type "halcmd show pin" you will get a list of all the HAL pins. You would then need to search that list to see if any pins are of the OUTPUT type and look to be increment-related.

From a brief scan of the source code,I don't see anything, but I am not clear how QtPyVCP creates HAL pins (if it does)

Have fun with windows...