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forum.linuxcnc.org/9-installing-linuxcnc...nd-software-stepping

Всем привет. Я новичек  в этой системе и нигде не  могу найти нормального описания как настроить gpio в raspberry pi для работы в linuxcnc. Помогите понят куда надо заходить и что включать.

An Ethernet cable from the PC host to a Mesa card seems to be a more modern way to go. RZN has the RPi5 and Mesa 7I96S working flawlessly in some recent tests with Ethernet connection. Apparently the new Raspberry Pi 5 does not support SPI connection at the moment.

I am wondering why would someone want an SPI connection over Ethernet. Are there any advantages?

Thanks!

I have a Novakon CNC mill (similar to early Tormach machines). It is from 2009-ish, I bought it used for a great price in 2012 but have not put much time on it. It runs Mach3 and was always glitchy. Shortly after I purchased it, I got the idea I would do a Linux CNC conversion based on some others I saw doing it on CNCZone back in the day using the Tormach GUI (pathpilot), but I never actually got around to doing it. Also – I have little to no experience with Linux anything.

The current CNC Mill
Novakon NM-200 series CNC Mill, circa 2009       
       -Still functional, but still glitchy with Mach software
       -3 Axis
           -4th axis capable with rotary table, which I also have.     
       -Runs Mach 3
       -Has C11 G rev 8.2 breakout board
       -G203V Gecko Stepper Drivers
       -iMach P2S Pendant (I added this)
Conversion Targets
       -Keep costs minimal until concept is proven.
       -New (to Novakon Machine) computer to run Linux CNC
            -Want to keep original computer unmodified and functional
                  -The C11 breakout board and gecko drivers are still in the original
                   computer case and the ideal plan would be to jumper from them to the
                   new computer/Mesa card
       -Run Linux CNC with Mesa card
               -Currently have new, never used 6i25 Mesa planning to use
                      -After reading about others who did conversion Tormach GUI
                        (pathpilot) with mesa cards I bought one, then didn’t dive into the
                        project, so it’s a little older
      -Is there a better/simpler solution that would be smarter to invest in now?
        I want to keep costs down, but if there is another simpler solution to still hit
        my targets and potentially save A LOT of time then I am willing to consider
         the investment.
     -Maintain functionality with iMach P2S Pendant
     -Assuming this will be a relatively simply config option.
     -Bonus – 4th axis capability
Linux CNC 
I originally installed Debian 12 Linux CNC.iso from linux website and at first struggled with high latency issues
      -Original ISO was buggy and caused issues
           - A helpful member in IRC traced it back to raspberry pi.   
      -Got on IRC and got great feedback, informing me that because I am using
        Mesa card latency does not matter because the card compensates for it.
            -Installing new ISO was recommended  
      -Installed Debian Mate from USB
      -Installed Linux CNC
             -Tried to import MACH.xml
                   -Would not import using step.config
                   -None of the ports & pins came through
                          -I do have record of all the ports and pins and other MACH config settings
                   -None of the commands I was directed to use to fix the issues could be “found”
            -Got into IRC channel in hopes of finding solutions
                     -Was told about Github convertor
                            -Its Python and I can’t get it to work.

Thanks in advance for any feedback. I appreciate any and all suggestions or guidance.

yeah my pimeroni hat is on the bottom. its great.

Downloads page

LinuxCNC 2.9.2 Raspberry Pi 4 OS based on Debian Bookworm Raspberry Pi 4 Uspace compatible with Mesa Ethernet and SPI interface boards.
www.linuxcnc.org/iso/rpi-4-debian-bookwo...23-11-17-1731.img.xz

LinuxCNC 2.9.2 Raspberry Pi 5 OS based on Debian Bookworm Raspberry Pi 5 Uspace compatible with Mesa Ethernet and SPI interface boards.
www.linuxcnc.org/iso/rpi-5-debian-bookwo...23-11-17-1520.img.xz

Ich habe einen Raspberry Pi zwischengeschalten.
Auf welcher Seite meinst du, kann man diese RT-Kernels installieren bzw. wie sehe ich, welcher mit meiner MESA 7i96s kompatibel ist?

You are welcomed, always.

Thanks tommylight for the clarification!

ProcksMFG wrote:

Newbie question: The RPi5 will talk to the Mesa 7I96S via an Ethernet cable. I would like to use a Mesa 7I73 Pendant/control panel interface. What ports/cable do I use to connect to the 7I96S? Thanks!

A plain network cable, cut in half, RJ45 connector to 7i73, the cut side to terminals on 7i96S.
Details on color wiring on the 7i96S manual from the www.mesanet.com website.

On the long run, the Nvme SSD should be more reliable. The read write speed boost is also a nice add. Most Nvme hats are on top of the Pi. I don't like it as it obstruct the cooling. Make no sense to run the RPi5 without the 5$ active cooler. Having the Nvme hat on the bottom (look for Geekworm X1002) with the active cooler makes a nice package.

RNZ, I'm looking forward to follow the progress of your build. I'm still in the planning stage. My design of the mechnical part is mostly complete. My attention is now on the electrical cabinet.

Newbie question: The RPi5 will talk to the Mesa 7I96S via an Ethernet cable. I would like to use a Mesa 7I73 Pendant/control panel interface. What ports/cable do I use to connect to the 7I96S? Thanks!

I have LinuxCNC 2.9.1 running on a raspberry pi 400 with Debian 12 "bookworm" (just for bench testing will update to desktop when I get everything installed on actual machine) and wired to a Mesa 7i96s.

The 7i96s is connected to a Stepperonline DM542t and then to a Nema 23 stepper motor set as the X-axis.

I have everything installed and ran the mesa config tool and show a connection to the 7i96s.

When I power everything up I get power to the stepper motor, I know this because it gets frozen and I cant spin it.

The 7i96s is wired to the driver as follows:

step0---> Pul-

Step0+ --> Pul+

Dir--> Dir-

Dir+ -> Dir+

I am not sure where to start in trouble shooting this and any insight would be helpful.

Thanks.

the Pi5 is only single lane PCIE. I do not know much about this stuff nor how it works, but i believe that limits maxumum speed - there is no benefit to going with a faster NVME.

NMVE drives can do up to 7GB/s of read and write, but those are pricey, and i do not know what RPI5 uses to access it, but 700MB/s is still a bit faster than the fastest SSD, so very good for the price.