Ok sorted that out. Now how do I know that linuxcnc is running on the last two cpu's, or, how do I force it to run there?

Some basics here
access.redhat.com/solutions/480473
Bit more detailed
rigtorp.se/low-latency-guide/

Your config isolates core 2 & 7.

I read a while back about isolating cores that were on the same die....has something to do with cahe and the like. I really wish I could recall that article.

The G-code is not very different and for the most part should work.

The biggest difference is that you should set a path blending tolerance at the start of the g-code in Linuxcnc. This will be a g-code line something like G64 P0.001 Q0.001.

Other differences will be with sub program calls and O-codes and canned cycles. But unless you are doing parametric g-code (unlikely with CAM produced code) it won't matter.

Linuxcnc's G-code is also similar to a lot of Fanuc code, and with similar exceptions as with Mach3.

I'd either go for mesa or riocore, both types will run on a Spartan 6.

Riocore is pretty good in that it has quite a few mesa doesn't support, has also port for a number of different FGPAs. The only issue is that it needs rebuilding of the driver for each time you change to fpga config. RIO also has a Ethernet plugin that uses a w5500, as of yet no plugin for the Ethernet chip used on the Mesa boards.

Mesa is very very mature, one driver is all that is required for changes to fpga if you keep to the standard mesa set of modules. SmartSerial is a big plus as well.

I built a 7c81/7i90 clone using a spartan 6 dev board and some custom PCBs, mesa & riocore firmware both ran fine on it.

Keep up the good work.

I made some progress on this issue.

The following command will show all open files in Samba which have some form of lock:

smbstatus -L

Edit: Ignore the text below it gave some weird side effects after some more testing.

Adding the following lines to the configuration of the share in smb.conf allows me to overwrite the files even though they are locked.

oplocks = no
level2 oplocks = no
strict locking = no

I'm using Probe Basic and it recently received a "RELOAD PGM" button in the development version which is very welcome.

However it doesn't seem to pick up the changes if I overwrite the file on the share and press the "RELOAD PGM" button. But if I open another file and then open the first file again it picks up the changes right away.

Yes, this is what I am talking about. I attached a picture with a few oil groove patterns among which there are the grooves I am talking about.

I got this result when I ran the checkmask file. I am sure that I don't know how to use isolcpu. I want to isolate two cores with last core being 7.  SO cores 6 and 7 to be used for linuxcnc.

Cores: 8
Actual CPU Mask: ff
Desired CPU Mask: 128
IRQ: 24
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.1.0-40-rt-amd64 root=UUID=bfdcf9b0-7caa-4c4b-b4c3-585accea347a ro quiet isolcpus=2,7

Hello, I have a few questions.I am building a complete computer with fpga and all other boards, and I have some questions:
1. What firmware should I choose, mesa, remora or, write my own?
2. I want a universal solution, so what input/output boards should I design?
3. Should I design my own case or choose a ready-made one?
Here is one of the prototypes:
-32 outputs 24v 0.5A, 32 inputs 24V, four boards
-4 analog servo -10V.. 10V outputs, 4 encoders input, one board
-Fpga 96 IO board with buffers, one board ()
-Firmware - ported and modified mesa for SPI interface.
-software driver - modified hm2 driver from source code.
-3d printed case.
-Computer Raspberry pi 5 aluminum case

all works fine and stable 
   

I’m just getting started with LinuxCNC and have switched over from Mach4. I’ve been using the Italian ECAM 5 software and would like to continue using it. How different is the G-code between Mach and LinuxCNC? What are the main differences?

Hi all,

First time poster so i hope you'll excuse if this is a simple fix. I'm attempting to make something like an ArcDroid for a uni project but I've run into a road block. I'm using a MESA 7i96s as my controller and two knock off tb6600 as my drivers. after using the Pncconfig i got both my motors spinning in the XYZ setup, but once i tried to change it to SCARAkin, it didn't work. At first it loaded but was still in the XYZ config, then once i changed enough it stopped working outright. At the moment I'm aiming for simple motion control and I'm not sure if the issue lies in something I'm doing or in my coding. I've made several attempts so i have multiple files, mostly just coping from the existing SCARA config that exists in LinuxCnC but also from consulting with ChatGPT. Any help would be greatly appreciated, functional files for something like this would be a life saver and a more direct line to someone who is happy to provide help would be out of this world.

No, this is close. It should work. But I have sometimes noticed that the ethercat master
uses old settings and not the new ones. Keep 1a00 and 1600.
Try these in order
"ethercat rescan",
if no change "sudo systemctl  restart ethercat",
and finally if no change, restart PC and drives.
See error messages in syslog when you start linuxcnc

You should also, not causing the problem with the drive, but still, change the line order in the hal file to  

Ihr habt natürlich recht! 
Der Stift war doch wackeliger eingespannt als gedacht.
Eine Fräsung in einem Reststück ergibt ein schönes Ergebnis - damit bin ich zufrieden!

 

Die Mesa-Karte ist immer noch am Weg, damit spiele ich mich vermutlich im Winter mal.

Ich bin jetzt noch am überlegen ob ich die Ansteuerung der Spindel-Drehzahl auch über LinuxCNC machen möchte, einfach um unabhängig von der eingebauten Platine zu sein.

Laut dem Blog von Entropia brauche ich die folgende Ansteuerung:
Über SPI auf den Pins 14,16 und 17 wird die Drehzahl eingestellt.
Die Datenrate ist 30 kHz; die Daten werden in 16bit-Worten (Big Endian) übertragen.
Bei einem ATMega328p mit 128 kHz Clock haben die folgenden SPI-Settings funktioniert:
SPCR = _BV(SPE) | _BV(MSTR) | _BV(SPR0) ;
SPSR = 1 << SPI2X;

Die gesendeten Werte sind linear Interpoliert zwischen:
14000 RPM in Editasc -> 2866
20000 RPM in Editasc -> 4094 (0x0FFE -- erster Nibbel soll stets 0 sein!)

man kann die Spindelgeschwindigkeit auch mit 64kHz (= 8MHz F_CPU / Divider 128) senden.

Wäre das eurer Meinung nach eher ein Fall für einen externen Arduino, oder kann das der Raspberry ebenfalls erzeugen und ausgeben?

wrote:

The reason I mentioned the 48V not being necessarily ideal is some electronics are made with almost zero headroom above their limits.

For example, I own a 12V DELTA power supply that can be adjusted to output 14VDC; however, its filter caps are only rated for 16V!

That's 2V of headroom!

Which is absolutely fine, that is the way the designers intended.

Discussion on voltage values
www.eevblog.com/forum/beginners/is-there...igher-rated-voltage/

Hello, this is my first post in the forum. Have used it a lot to set up my machine to the point it is currently at.

So far I have it all pretty much set up and good to go with the QTPlasmaC UI, but I need some help removing the Z-axis movement from the machine.

The machine is a 2 axis plasma tube cutter, one for the rotary motion, and one for the linear. The rotary axis is actually treated like a linear one. with some clever sheetcam post processing I have created something where you can input a flat profile of the tube, and get prompted to input the tubes diameter that will do some maths to get the correct feed rate at the surface of the tube, depending on the tube diameter that was entered.

My problem starts when the plasmac software tries to home the Z-axis, even though there should be no z-axis instructions in the g-code. Then when the g-code runs it sort of gets stuck at the homing of the Z-axis, that shouldnt exist....Is there a good way to remove it entirely from the machine, and maybe even the qtplasmac UI? 

I have tried to comment out all the Z-axis parameters in the .ini and .hal files, but then i just get errors when opening up the cnc software. This is for a school related project so go easy on me!image missing /media/kunena/emoticons/smile.png (I have added a screenshot of the machines design in cad)
Thanks!