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Found the problem, as for my VFD pwmgen output has to be inverted (setp hm2_7i95.0.pwmgen.00.out0.invert_output true), after that scale started to work in right direction.

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I still don't follow it I am disappointed in my self to say.

But, have blindly entered:- (Pasted out of the hal file)

loadrt not count=2
addf not.0 servo-thread
addf not.1 servo-thread
net my-input-signal-1 <= hm2_7i92.0.encoder.03.input-index
net non-inverted-signal-1=not.0.in XXXXX
net inverted-signal-1 => not.0.out
net inverted-signal-1 => min-y
net my-input-signal-2 <= hm2_7i92.0.encoder.04.input-index
net non-inverted-signal-2=not.1.in
net inverted-signal-2 => not.1.out
net inverted-signal-2 => max-z

This errors at the line XXXXX with net command needs a pin

I'm working towards getting a servo on the knee/bed of this machine, but I'm not there yet.  I will have a glass scale on the knee axis soon, but adding the servo is a bit of a project that will take some time.  For now I just have servos on X and Y, and W and Z will be manual.

I have not read up on the extra joint functionality so I'm not familiar with how it works.  I'll give it a look!

FYI I did end up submitting this as a PR ... github.com/LinuxCNC/linuxcnc/pull/3324#issuecomment-2642569284

-Steve


 

NT4Boy wrote:

loadrt not count =2 (I'll just show one here)
add not.0 servo-thread
net my-input-signal-1 <= hm2_7i92.0.encoder.03.input-index
net inverted-signal-1 = not.0.in
net inverted-signal-1 => your-desired-component (which I guess is min-y)

Yeah, that is not OK, should be something like
loadrt not count =2 <<<<< if you need two inverted pins, needs also another addf
addf not.0 servo-thread
addf not.1 servo-thread
net my-input-signal-1 <= hm2_7i92.0.encoder.03.input-index
net non-inverted-signal-1 = not.0.in
net inverted-signal-1 => not.0.out
net inverted-signal-1 => to whatever signal it needs to go

net my-input-signal-2 <= source of the input for inverting
net non-inverted-signal-2 = not.1.in
net inverted-signal-2 => not.1.out
net inverted-signal-2 => to whatever signal it needs to go

Yes, it is the index pins that are inverted. Thanks.
net min-y <= hm2_7i92.0.encoder.03.input-index is a pin that needs inverting.
i tried with
net min-y <= hm2_7i92.0.encoder.03.input-index-not , but it errors
the other syntax my friendly AI chatbot suggests for this is:-

loadrt not count =2 (I'll just show one here)
add not.0 servo-thread
net my-input-signal-1 <= hm2_7i92.0.encoder.03.input-index
net inverted-signal-1 = not.0.in
net inverted-signal-1 => your-desired-component (which I guess is min-y)

I don't get what the connection is between inverted-signal-1 and my-input-signal-1
Or should all three lines read inverted-signal-1

Still trying to learn.

vizavadsky wrote:

Could not open command file 'custom_postgui.hal'
Could not open command file 'shutdown.hal'

Edit the ini file and omit those two lines then try again, usually they are not used.

unknown wrote:

Be wary of those devices, they could just be a USB to parallel port. I bought a similar device thinking it would be a proper hardware serial port, but what it actually was a a USB to serial port.
Getting the right laptop to work can be a bit of a hit & miss exercise. Tho it's not something that I would recommend for a parallel port setup. Mesa maybe.

 

Ah, I hadn't thought about the "hidden" USB being a risk at all. 

Tommy Light has a good little thread on Lenovo laptops that he has gotten to work great on production machines so if I go down this path, I would try to get one of the ones he has had luck with. But yes, he does run them on Mesa Ethernet cards. 

Thanks again, let's see what I'll end up with. This is research as of now though I do think I'll pick up the lathe within a few weeks. 

Thanks a lot, this is now working well.

I think it's good to have an information system that notifies also about new features that are disabled by default (for compatibility reasons).

I implemented such, based on Acieras snippet.
It is able to hide the messages you have read but displays new ones id there will be any in the future.

You can try it out using this branch: github.com/hansu/linuxcnc/tree/gmoccapy-info-message

Thank you for those lines, I'm now receiving signals!

Could you suggest the appropriate numbers for type, frequency, and scale?

I attempted the following settings, but I’m getting a +10V output at the spindle, even at M3 S9000. This should ideally be half of that value.

setp hm2_7i95.0.pwmgen.00.output-type 2
setp hm2_7i95.0.pwmgen.pwm_frequency 2000
setp hm2_7i95.0.pwmgen.00.scale 0

In terminal "qtvcp copy", check "qtdragon", name "qtdragon_custom" for your case, then ask you to create folders, agree, ask for copy, agree also. Now in your home folder will be qtvcp/screen/qtdragon_custom. You can modify it as you wish, and the original files in the system folder will be unchanged for comparison.

Hi,

I am trying to make a custom qtdragon_handler.py file, which I will call qtdragon_handler_custom.py, but it seems I do not have any permissions to modify whatever in the qtdragon folder (only root permision).  Since I am quite new with Linuxcnc (and Linux in general), I am asking the community for some help.  Thanks!

Be wary of those devices, they could just be a USB to parallel port. I bought a similar device thinking it would be a proper hardware serial port, but what it actually was a a USB to serial port.
Getting the right laptop to work can be a bit of a hit & miss exercise. Tho it's not something that I would recommend for a parallel port setup. Mesa maybe.

unknown wrote:

Parallel port is perfectly usable.
You may find you will you need an RTAI kernel.
Tuning for a machine that has to run a base and servo thread is a bit harder than one that just requires a servo thread.

Ah, yes, the kernel, too. But that's good news. Thanks a lot for weighing in. 

I think it will either be this route or, dare I say it, a laptop;). But then it will likely be with a Mesa card. That said, there are some Lenovo laptops with a slot for those PCIe cards so parallel port may still be an option: