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  • pkludwig
  • pkludwig's Avatar
24 Jul 2025 15:52

Simulating a hm2_eth driver (e.g. mesacard 7i76e)

Category: Driver Boards

Hi everybody,
i found some threats (e.g. Simulate a mesa 7i96 (solved)) where a component was written for mocking a 7i96e mesacard. Nevertheless i didn't found this component code published and as i'm using myself a 7i76e card i wrote a component on my own for mocking/simulating this driver.
My idea was to use the same .ini and .hal-files (and .tcl-files with some if statements -)) as on my real milling machine to keep the adaptions between simulation and real machine as low as possible.
In case it is interesting/helpful, i put the component-code on github.com/pkl42/linuxcnc_components_sim.git 
Also not all available pins are included right now, i added a detailed list on the git repository.
I tried to write the component in a generic way, so it should be quite easy to add missing pins or even adapting a 7i95 or 7i96 card. 
 
  • tommylight
  • tommylight's Avatar
24 Jul 2025 15:43
Replied by tommylight on topic Multi-use machine

Multi-use machine

Category: General LinuxCNC Questions

Easy, just make as much as you need/like of configs that fit your hardware, use the wizard to create each of them.
Although, plasma will not play nice with other features due to huge amounts of fine metal dust that blackens everything.
  • tommylight
  • tommylight's Avatar
24 Jul 2025 15:41
Replied by tommylight on topic threading - spindle encoder synchonization issues

threading - spindle encoder synchonization issues

Category: Turning

What I think I've discovered is that the system undercounts in the forward spindle direction, but seems to count properly in reverse.

Do you have a scope to monitor A and B encoder lines?
-
I had something similar a few years back with a china encoder where the pulses were correct in one direction, but would get thinner with speed on the other direction.
This was a new out of box encoder, the same make/model encoder worked properly after replacing it.
  • grossman83
  • grossman83
24 Jul 2025 15:15
Replied by grossman83 on topic threading - spindle encoder synchonization issues

threading - spindle encoder synchonization issues

Category: Turning

I'm having threading issues where the machine cuts a slightly different thread each time. This has always been the case since I retrofitted a late 70's CNC lathe 8 years ago. Recently I've decided I've had enough and want it running "perfectly" which is why I'm finally digging into the issue.

Initially I thought the issue was due to noise on my encoder lines. I finally tracked down the source of the noise I had and it was EMI from my cheap chinesium servo drives. I've thoroughly isolated those now and have very clean encoder signals so I really doubt it's that.
  • I'm running LinuxCNC 2.7.4
  • The OS is: Debian 7.10 (Wheezy) and the kernel is 3.2.0-4-rt-686-pae
  • The encoder is a US Digital HI-1024-IE-D with a differential sort of backpack that connects to the single ended encoder and drives differential signals to my mesa 7i76 breakout board.
  • The 7i76 is connected to a mesa 7i92
  • I keep doing test runs on a thread and every pass is slightly different. It's as if it's not getting correct the index pulse and I suspected that to be the case which is why I put so much effort into getting rid of any noise. However this does not appear to be the case.
  • When I turn the spindle manually 10 turns I expect to see 4096*10 or 40960 counts in motion.spindle_revs, but it seems to undercount by about 5-10 counts per revolution. I've swapped in a different encoder and I have basically the same issue. What is strange is that if I rotate the spindle back and forth +- 45 degrees or so a few times and go back to the original position I'll have accumulated a couple hundred encoder counts. What I think I've discovered is that the system undercounts in the forward spindle direction, but seems to count properly in reverse.
Attached is my .hal file.

Any ideas?
  • dextaca
  • dextaca
24 Jul 2025 14:31
Multi-use machine was created by dextaca

Multi-use machine

Category: General LinuxCNC Questions

Good day Forum
Just a quick question for the forum, I have a Biesse 37L router that I would like to use it as multi config machine ( plasma cutter , CNC router and 3D printer ) . I would like know if someone can point me on how to make multi config on Linuxcnc so I can make things happen 
Thank you 
 
  • skunkworks
  • skunkworks
24 Jul 2025 14:16
Replied by skunkworks on topic Display motion.current-vel ?

Display motion.current-vel ?

Category: Plasmac

Yes - unchecking autovolts then uses the material voltage. Duh

thanks again
sam
  • akg1904
  • akg1904
24 Jul 2025 13:58

Kinematic model for a 5axis mill with universal (nutating) head

Category: Show Your Stuff

Hi Aciera,

Its been a long time.
I saw your work and it was great.
but I have a XYZAC-TRT machine and for some work I need to run my machine as 3+2 with TWP.
I saw this video as it was TRT machine:

So I want to know how I can use my machine as such.

Thank You in advance,

Regards,
Abhishek
 
  • zzrzzr
  • zzrzzr
24 Jul 2025 11:59 - 24 Jul 2025 13:42
Replied by zzrzzr on topic PlasmaC Voltage Divider

PlasmaC Voltage Divider

Category: Plasmac

Thanks.

Is it also possible to put the voltage-divider (2 resistors) outside the plasma-source in a separate box to avoid warranty loss of the new machine ?

And where can I get a plug to connect to the THC and Start-socket of the Stahlwerk machine to connect it to my cnc-system ? Is it included when buying the stahlwerk 70P ?
  • JT
  • JT's Avatar
24 Jul 2025 09:47
Replied by JT on topic Flexible GUI

Flexible GUI

Category: Other User Interfaces

Has anyone used this to make a GUI similar to mini (deprecated several years back) or something similarly simple.
 

It's quite simple to make the GUI you need using Flex GUI. I did look at Mini and it is a bit confusing to me...

JT
  • RotarySMP
  • RotarySMP's Avatar
24 Jul 2025 09:13 - 24 Jul 2025 09:29
Replied by RotarySMP on topic looking for advice on retrofitting hydrolic mill

looking for advice on retrofitting hydrolic mill

Category: Driver Boards

As Timo and Jon pointed out, This Old Tony's MAHO 400P was like your Knuth. The machine had an early automation with a single central axis drive motor, and a set of clutches, brakes and angle gearboxes to transmit the drive to the selected axis. Only a single axis could move at a time. No integrated motion possible. No angles, no curves, no contouring, no thread milling etc is possible.

Tony stripped out all those mechanical parts and converted the machine to three modern drives each dedicated to an axis, and independant, allowing full 3D contouring.

My Maho 400E was already a "normal modern" CNC, so I didn't touch the mechanics or electrics of the drive system. Only replaced the controller, both because it was DOA, and because it had the lowest spec processor Phillips ofered (Intel 8086) and was therefore only 2.5D capable. With LinuxCNC it is now 3D capable.
  • Franklin
  • Franklin
24 Jul 2025 08:21
Replied by Franklin on topic WHB02 remote control to QtPlasmac

WHB02 remote control to QtPlasmac

Category: Plasmac

Hello, can you tell me if there is a way to connect remote control signals to the jog buttons of the qtplasmac interface?
halui.joint.N.plus is missing, and joint.0.jog-counts is difficult.
Would like to have external qtplasmac pins for joging
  • Aciera
  • Aciera's Avatar
24 Jul 2025 06:57
Replied by Aciera on topic Weird G54 orientation

Weird G54 orientation

Category: General LinuxCNC Questions

The overlay in the preview you posted shows 'TLO' values (ie Tool Length Offsets) for X, Y, and Z. These offsets either come from values associated to the currently loaded tool in the tooltable or they are set in the GCode
I don't think Fusion is setting G54.

Looking at the generated Gcode will answer that.
  • RotarySMP
  • RotarySMP's Avatar
24 Jul 2025 06:34
Replied by RotarySMP on topic Control panel for Gmoccapy

Control panel for Gmoccapy

Category: Gmoccapy

Fantastic job you are making on that. Are you also using matrix keyboard functions in LinuxCNC? I liked that the Maesa 7i73 supports that as well.
Mark
  • tcbmetalworks
  • tcbmetalworks
24 Jul 2025 06:07
Replied by tcbmetalworks on topic Automatic band saw marvel v10a

Automatic band saw marvel v10a

Category: CNC Machines

This saw seems to be primarily ran on 110v to control all of the limit switches hydraulics solenoids motor starters etc. What's the best way to control 110v with a mesa card? I know I can make a bank of relays but it seems a little extra for all of these functions having a huge board of relays. I pressure washed the saw down today put power to it and was able to force my way through making each function work. U could proably run the saw as is like a regular saw but the auto feed system is totally junk and needs to be rebuilt. 
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