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The Deiwu I/O does not output PWM,
Rtelligent has one that does.
But as Hakan says an Ethercat stepper driver would be the best solution
eg Rtelligent ECR60 but Leadshine also do one now. 

royka wrote:

Alright, I assumed you would have one since you have an rpi image builder. But likely it uses a prebuild from Debian that seems to be patched already.

Yes, I built the Pi images for Linuxcnc you find on the downloads page. I shared my repo for the builder on this thread earlier. Bear in mind the pi5 was released just after we released Linuxcnc 2.91 and at the time pi5 support was patchy in the upstream builder. I've since updated the builder and it has been tested on the Pi5 and the shortcomings are reported to be gone.

We actually build the kernel .deb from the official Raspberry pi kernel repo and wrap Debian around it and build a compressed image. The 6.12  kernel should be supported by the builder. You should give it a go. As its cross compiled, building the kernel will be quicker than  it can ever be on a Pi and the kernel as well as an optional img (which we compress) is built.

nah, go 48v if your drives can support it. its the current which matters. You could drive the motors at 72 volt with the right drivers if you wanted and still not break them,

the cheap drives i got are only rated for 42V so i am looking to run them on 36v, this is going to be on the cheap side for builds. i don't do things as pictured by others i just use it for a starting point for planning. i plan on using double shielded wires everywhere with shield drains on everything. i have spent a lot of time reading up on grounding and a lot of it was plasma related for a source. i have seen way too many builds get sideways because of grounding issues

the Nema 23 motors i picked up and dives were only $110 for 4 so nothing very fancy. THCAD is about the cheapest height control on the market, so being able to do that makes me happy

i'm not ready to buy boards from Mesa just yet and the THCAD-300 is out of stock at the moment, and it is a little bit cheaper than the THCAD-2 so with added cost of having to buy extra stuff with shipping on top of that saving $20-$30 makes me lean towards the THCAD-300 just because i am cheap

you put me on the right track.....
I was provided with the vendor ID (0x4321) and product ID / code (0x10C2) by the manufacturer. 
And these values show in the drive through the software also

using the below terminal input
ethercat slaves -v

the product code was 0x00d0   ???

can anyone provide the reasons for this ? please remember the internal drive value is what the manufacturer stated !

i made this change to the .xml and the drive works.

There is QtTouchy available in linuxcnc as well.

Posting your modifications would be helpful

It connects to the hardware stepgen index pin
probably something like:

hm2_7i96s.0.stepgen.00.index-enable

halcmd show pin hm2 | grep index
 (when linuxcnc is running)

should list it

Hello,
im struggling with the modification of qtdragon. I just replaced 2 buttons. Im able to use the new design and works almost everything well. The 2 new butttons are not working. I tried with the costum_postgui.hal but i got always an errror that this pin is not valid.So i checked in qtdragon via hallshow which pins are avalibel and i didnt found my button (action_air). i searched everywhere but i dont find anything like that. (Not even action_flood and that is working well)I wanted to search for the iocontroll but that is a executable file and i cant open it. (well, im not that familiar with linux).

I hope someone can help or give me some suggestions.

While the current and arc voltage can be controlled accurately during cutting,
you have large transients at arc start and stop (which happens in a fraction
of a nanosecond) V=L di/dt  is not your friend here...

RDA wrote:

The ”whole” idea is to stabileze the molten hafnium, tungsten or whatever the electrode material is.

Hafnium does not melt, it erodes.
Would not be much use molten, and to get it to melt, the surrounding copper electrode would have melted loooooong before hafnium.
-
PCW is trying to explain the induction phenomena that happens when applying voltage to a coil and then cutting it, the coil will induce current on it's own.
Find an electromagnet, apply some voltage to it and cut the voltage while watching the scope, it is amazing what voltages can be produced by it, way beyond what has been applied.

Sorry not sure what you mean, but when the arc is turned on or off its done in a controlled way. The ”whole” idea is to stabileze the molten hafnium, tungsten or whatever the electrode material is.

I think we are tallking about different things, sorry about that.

Hi kworm !
Everything has been good with the drive, tuning and movements through the drive have worked without issue.
i had to config the PDO's also so that all appeared to work...

using the Leadshine motion studio software
I do see the Control Word = 0x0
and the Status Word is 0x410 so it looks like the LinuxCNC EtherCAT Master is not trying to put the drive into operational ?

Looking for one or the other.   Trying to update a Tormach machine and was a little disappointed to learn that the 7i92th is not a direct replacement for the earlier cards. 

Will purchase, or if you can use an 7i92th, I'll trade for one of the earlier versions! 

That is the HUB inside the PC/RPI, there is nothing that can be touch related there.
Some of my laptops show "Wacom Co. LTD" as they have touch and pen.