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150*3.1415=471.225mm of surface times material thickness times 7850kg/m3
That gives you the weight, and at 6 meter length, even 1mm thick walls would be 22KG!
At 4mm, that is 88Kg, that have to be turned plus the friction and the chuck weight.
You can make it work with 1:4 reduction, but it would have to be at miserably low acceleration.
Do you have a 3D printer? Print some pulleys, find a HTD5 belt, at least 15mm wide, use a lot of walls to enforce the mount holes on pulleys.

No idea if there is a driver for I2C in LinuxCNC, maybe searching on github project page would show if there is anything about it there.

Nope, i do not use it.
Every now and then i use FreeCAD, i will have to learn the PATH workbench, whenever i get a chance.

I do this
forum.linuxcnc.org/show-your-stuff/32784...ofit?start=40#254368

Hello everyone.
Since there doesn't seem to be a clear solution, I have a question for those involved in the development of LinuxCNC.

Are the 2.8.3 pid and 2.9.3 pid modules the same?

Are they different?

Can I overwrite the 2.8.3 pid module in 2.9.3 and use it?

Would it be better to update the whole thing to 2.8.x?

Thank you in advance.

Try this one
forum.linuxcnc.org/18-computer/51816-esp...lay?start=130#313587
This does connect but enters reboot loop when running LinuxCNC.

vre wrote:

Any news about mesa hardware and raster engraving?

What do you mean by this?
Mesa works for everything with LinuxCNC, so it also works for raster engraving.
As for rastering, more info her and new configs that will stop laser/PWM on ESC or stop execution or running gcode:
forum.linuxcnc.org/show-your-stuff/46752...ver-etcher-scratcher
And here are the STL files just in case you want to build such a machine
www.printables.com/model/876702-diy-cnc-...-writing-logos-etc-o

On Mint 22 you will have to compile LinuxCNC from sources, otherwise it does not work.
Linux Mint Debian Edition 6 works, install reboot, then in a terminal
sudo apt update
sudo apt install linuxcnc-uspace

Hello,

i was quite fed up with undocumented components on my 2nd hand machine.
That is why I ripped it apart and decided to re-do the complete electric syste.

Now I was thinking it is a good idea to make some sort of wiring diagram, before starting the actual work.
This is to help adding more functions in the future, helps with repair. ( I want to avoid to have to reverse engineer my own installation )
From another thread I learned that this kind of plan might become also helpful to create a structured .hal and .ini file

Just to give an idea what I am up to.

A simple x-y-z mill, optional rotary axis a or c, (maybe rigid tapping, given the low torque spindle probably useless), MPG

Components that I have so far:

• PC
• Mesa Card
• 3 open loop stepper drivers
• 3 stepper motors from old system
• 1 closed loop stepper with integrated driver (for rotary axis)
• Power supply 80V DC
• MPG (wires single switches, "no brain")
• BLDC spindle with driver (from old system) 0-10V speed control (can be pluged to MESA card)
• x-y-z proximity switches
• Temp switch for spindle overheat
• (optional) coolant pump
• (optional) spindle encoder

I am not so much looking for a wiring instruction, more for some advise how to document a system like this. (pen and paper, some free software?)

Greetings Timo


 

Common issue I would say.

• Some of the BOB have slow (budged) Optocouplers, (you could check datasheets) 
• the parallel port is not particular fast
• linux cnc servo thread can limit speed if set high
• Encoders usually also have a speed limit, (becomes an issue for high speed spindles)

Some people try to use an encoder with less counts which works to some extend.
My system was hopeless; even with a 100 ppr encoder @600rpm.
Loosing the ocasional signal gave me a lot of trouble.  
After I spent the money on one of the typical FPGA cards, the issue disappeared entirely.

Greetings Timo
 

Any news about mesa hardware and raster engraving?
Instead of mesa can use an orange pi 5 that has low jitter and IOs for raster engraving?

Hi Everyone,I’m new to LinuxCNC but have prior experience with Mach3. I’ve set up a lathe using a cheap Chinese breakout board (BOB), and while everything works, I’m facing an issue with the rotary encoder.As the spindle speed increases, the encoder’s position stops updating at higher speeds. I’ve checked this using the HAL meter, and it shows no response beyond a certain speed. However, when the spindle slows down, the encoder starts responding again.I’ve ruled out magnetic interference from the VFD because the same behavior occurs when I spin the encoder using an electric hand drill.Could this be due to:1. The encoder type (I believe it’s incremental)?2. A limitation of the breakout board (even though I’ve seen others successfully use the same board for threading, e.g., on the “GWBM” YouTube channel)?I’d really appreciate any insights or advice on troubleshooting this issue.Thank you!

I would update to the latest normal release (2.9.3)
I don't think there are any major hal/ini file changes
between 2.8 and 2.9

Thanks Scott for yor replay.

In this case it is not a curvic coupling.... The servo moves the plate to the corret tool and it is a Hydraulic clamp.....

Today i checked and my problem was that the Hydraulics hoses were connected wrong...... I fixed the hoses and now it is working as i expected...

I will continue with the retrofit....

Thanks