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It's hard to say without testing. There may be improvements to be made with isolcpus and other tweaks too.
If the board you get matches the one have with 25k latency then you should be able to step at about 5kHz (theoretical is max is 40kHz with a 25k base thread, but the differences in motor speed between every 5th cycle and every 4th and so on are more than the motor will follow)
With 4x microstepping 5kHz is about 375rpm at the motor shaft. Or 1800mm/min with a 5mm pitch screw..
You might want to start with software stepping / parport to get going, but it's not the best solution. If you are using a paralle port already then a Mesa 7i90 can be used to massively increase step rate and smoothness, and it adds a lot more IO too. There are other options from Mesa too, as well as from Pico systems and you can also look at the alternative firmwares like Remora for alternative hardware.

The release notes say that Ubuntu 24.04 is supported, and the issue you had looks
like a problem with  the XML project file, so I'm not sure whats going on.

Did you apply the latest patch?

If I get a chance, I can post a 7I96S Efinity 2025.1  project file
( I'll change something so the IDE re-writes the file )

Does this version leave existing configurations using scarakins unaffected? ie, is the new behaviour a strict superset of the area of correct behaviour of the existing kinematics?
If so, then can you raise a pull-request to update the current scarakins at github.com/LinuxCNC/linuxcnc

If the behaviour is different, then please raise a pull-request to add the new kins alongside the existing (scarkins2 for example)

The reason for this is that we try not t break existing configs through our updates. Anything that is currently working has to work at least as well after the update.

Hello,
I am working on a CNC mill with 4x Lichuan LC10E 23 bit absolute 1000W Servos. Setting up worked quite well following the tutorials and using the Marco Reps EL8 config and working from that. The machine is running and even the gantry is working. Now I am trying to tune the servos which turns out to be troublesome. After trying to get the following error down for a few hours I am left with a rather big F-Error during moves. The Error is scaling with speed. With 10000mm/ min I can't get it below a Value of 4.5mm. With 5000mm / min I can't get it below 2.25mm and so on. I tried changing almost every setting on the drive but can't get the F-Error any lower. So my last guess is that there is something wrong with the Ethercat timings or configs. Is it possible that this is a delay in ethercat between sending the position command and receiving the position feedback? Any help is appreciated
Best regards
Alex

Thanks. I'm looking to buy Asus Prime n100. How do you think will it have nice software step generation?

Did you say yes to the pop up dialog?

Like everything else you will only hear people bitching and moaning, the happy ones are usually pretty quiet.

The standard magnetic sheet works to begin with but over time it degrades. Creality make a textured glass sheet which works really well.

unknown wrote:

Personally I would only opt for ballscews on the Z axis on a bed slinger.
But in all honesty before knocking the Ender 3 use the machine, spend some time setting it up, stiffer bed springs or as the current trend solid silicon spacers. The printer itself is only part of the equation, the secret to a good print, we're talking functional prints, is designing the CAD model with thought as to how it will be printed. Dealing with shrinkage on holes, understanding that 0.1mm accuracy is the best you can expect. What works for my Ender 3 may not work for yours for nailing hole dimensions, then throw the type of filament into the equation and things change again.
There's a reason the Ender 3 was a popular choice as an entry level printer, it Just Worked out of the box.
Teaching tech is a good channel on YouTube, Michael won't piss in your pocket and tell you the sun is shining. I've found him to be honest in his opinions and quite a knowledgeable chap,and no I'm not being biased because he's a fellow Aussie. As we say he knows his shit, plus he keeps goats.


 

 Thanks very much Unknown,

ha ha, yeah I am TRYING to use it. I can't even get my first layer to stick yet.
Using a glass plate, temperature up to 70, cleaned the glass with acetone, put some hair spray on it, leveled the bed with feeler gauges, and all to no avail.
I might try the standard black print sheet next.
I don't have any personal experience with the Ender but from what I've heard from the guy who gave it to me, and from various other guys on the net, I'm surprised to hear you say the Ender just works out of the box. I kind of hear that more with Bambu printers.
I found a playlist on the Ender, from the Youtube channel Teaching Tech that you recommended. I'll see if I can have some success after viewing some of his videos.

Hello PCW,

Thank you very much for trying this. I am absolutly enthusiastic about the support you and your colleagues provide in this forum.
I can imagine that Xubuntu 24.04 is the reason as I had problems with the Qt-Version. I had the same problems on MX-Linux, MX-Linux is based on Debian as Ubuntu does.
I have a Virtualbox W10, I will try on this and will give you feedback.

Cancel that request, it turns out my second hand and still not very cheap monitor is just broken

i suspect the large amount of conflicting "mine works just fine vs mine wont work no matter what" comments online about these quanta optical touch screens are simply a case of one of the dumb little cameras failing. I would learn from my error and avoid!!

back to square one, thanks all the same!

I'm looking for a 7i37-COM. Does anyone have one to spare, or is there any way to get a replacement?
Can the old card be repaired? Are there still spare parts available? My old card had a short circuit.

Few ways of doing this.

The way I handled it on a 4th axis plasma build was with a magnet on the rotary and a hall effect sensor sensor to read it. Then sending the rotary back to 0 at the end of the gcode via the post processor.

It's not fool proof (power failures) but it works well enough as I just drive past the home switch then home again the one in 1000 times I have a power failure during running

Could use a 3d printed gear reducer to get a 1:4 rotation and put the sensor on that....so 720 turns into 180.

Help me solve the problem. When creating a panel in qt and embedding it in linuxcnc, a window constantly pops up with the inscription: Qtvcp encountered an error; No handler file was found.
Would you like to copy a basic handler file into your config folder?
This handler file will allow display of your screen and basic keyboard jogging. This happens every time I launch my configuration.

Installing Linuxcnc 2.9.4

Thanks! Unfortunately for turning this change allows it to run but breaks the code for this function.

I've considered picking up an absolute encoder for it. I already had the servos, so I was just trying to use them up. Each axis has a 100:1 harmonic reducer that's belt driven. The belts made the package a bit smaller and allowed me to route the cables through the center of the gear reducers. I'm not concerned about unwinding during a program. I just don't want to shut down the machine at say 400deg and then add another 320deg by always homing in the same direction.

I've got a half baked solution in mind. A while back I made a tool changer and spindle homing procedure from the home all button by calling a halui mdi command and then using g code and I think I might be able to do something similar for this.