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  • PCW
  • PCW's Avatar
16 Aug 2025 16:34 - 16 Aug 2025 19:39
Replied by PCW on topic Getting stuck on G1 (but not G0) in NGC M6 remap

Getting stuck on G1 (but not G0) in NGC M6 remap

Category: General LinuxCNC Questions

I think it's also a function of the spindle-at-speed logic.
If you use the near function with the actual and commanded spindle
speed to generate the spindle-at-speed signal, it will be true even when
the spindle is at 0 speed, and the issue will not arise.
  • tommylight
  • tommylight's Avatar
16 Aug 2025 15:59
Replied by tommylight on topic AXYZ retrofit - Stepper driver settings

AXYZ retrofit - Stepper driver settings

Category: CNC Machines

If you can choose from the 3 you listed, DM860 for sure.
It is the only of those 3 that can drive your motors properly.
  • rhscdn
  • rhscdn
16 Aug 2025 15:50
Replied by rhscdn on topic AXYZ retrofit - Stepper driver settings

AXYZ retrofit - Stepper driver settings

Category: CNC Machines

DM542 Has a better voltage range, but is still small in current output (4A peak).
  • rhscdn
  • rhscdn
16 Aug 2025 15:47 - 16 Aug 2025 15:48
Replied by rhscdn on topic AXYZ retrofit - Stepper driver settings

AXYZ retrofit - Stepper driver settings

Category: CNC Machines

Here is what I’m seeing regarding specs. Recall, I have 42V and the stepper is listed at 5A.

DM542 2-phase stepper motor driver
* Output Peak Current: 1.0~4.2A (3.0 RMS)
* Input Voltage: +20~50VDC (Typical 36VDC)

DM556 2-phase stepper motor driver
* Output Peak Current: 1.8~5.6A (4.0 RMS)
* Input Voltage: +20~50VDC (Typical 24-48VDC)

DM860 2phase stepper motor driver
* Output Peak Current: 2.4~7.2A
* Input Voltage: +18~60VDC
 
  • funkenjaeger
  • funkenjaeger
16 Aug 2025 15:13
Replied by funkenjaeger on topic subroutine randomly stops at first G1 move

subroutine randomly stops at first G1 move

Category: O Codes (subroutines) and NGCGUI

I figured out my issue and posted the solution in this other thread:
forum.linuxcnc.org/38-general-linuxcnc-q...-ngc-m6-remap#333512

tl;dr: Adding a zero-distance G1 move somewhere between a spindle speed change (such as an M5 stop) and the first "real" G1 move in the subroutine appears to bypass the one-time wait for spindle at-speed that normally occurs after any spindle speed change.
  • f355
  • f355's Avatar
16 Aug 2025 14:55
Z probe and tool setter combo was created by f355

Z probe and tool setter combo

Category: Basic Configuration

Hello everybody!

The 3-axis machine I'm trying to retrofit has a tool setter button fixed on the bed, as well as a spindle Z probe, and I'm trying to make it work (using qtdragon, if that matters). I don't know the length of the probe, and I don't want to use a fixed value for it due to the possible spindle clamping variations, so I'd like to measure it against the tool setter before every probing routine.

In order to do that, I need to move the probe down until BOTH the probe and the tool setter contacts are closed, to compensate for the probe's action distance. In other situations - probing the stock or setting the end mill length - I need the machine to go until EITHER of the contacts is closed.

The issue is, there are no separate HAL pins to feed the tool setter and the probe signals into, just motion.probe-input. I can combine the signals with or2/and2 and it works for one of the scenarios, but obviously not for the other.

How do you folks solve that? I can't imagine I'm the first one with this question, but digging the forums did not produce anything helpful for me.

Thanks in advance!

 
  • funkenjaeger
  • funkenjaeger
16 Aug 2025 14:55 - 16 Aug 2025 15:09
Replied by funkenjaeger on topic Getting stuck on G1 (but not G0) in NGC M6 remap

Getting stuck on G1 (but not G0) in NGC M6 remap

Category: General LinuxCNC Questions

Reviving this from the dead, as I once again ran into this same issue in my tool changer routine.  Clearly, my original "fix" of just not running the spindle in my M6 remap was just a workaround, not an actual solution.  In my tool changer routine, I was (of course) stopping the spindle via M5 prior to changing tools, and this was causing it to wait on the first G1 move.  I'm not willing to change that to a G0 because I don't want the machine slamming tools in and out of their pockets at full speed.

I haven't been able to easily find a crystal clear definition of this in the official docs, but numerous sources have led me to understand that after each commanded spindle speed change (including stop/start), upon encountering the next feed-rate move (e.g. G1, G2, G3 and probably others) the motion controller will wait for spindle at-speed to become true.  This wait will only occur once after each spindle speed change (i.e. subsequent G1/G2/G3's won't wait) and does not apply to rapid moves (G0).

One aspect that made this issue more insidious and appear to be more elusive during troubleshooting is that it doesn't behave the same when commanding things manually via GUI or MDI, versus when running an actual program in Auto mode which contained tool changes.  I'm guessing that whatever internal flag is associated with this one-time wait gets reset each time execution stops after a manual command.

This behavior is logical enough in the context that G1/G2/G3 are meant to be "cutting" moves whereas G0 rapids moves are not.  However in the context of a tool change or probing or similar, a controlled feed rate while NOT cutting is desired, and there is no such thing as a non-cutting controlled-feedrate g-code command in linuxcnc to my knowledge.

Fortunately, I found a way to fake it out:
G91    (incremental distance mode)
G1 X0 F1 ("move" 0 distance at an arbitrary non-zero feed rate - this consumes the one-time wait after a spindle speed change)
G90    (optional - restore absolute distance mode if needed)
Thankfully, based on my testing, a zero-distance G1 move seems to be interpreted as a no-op but still consumes the one-time wait.

Adding this before the first "real" G1 move in my tool changer routine has eliminated this issue - at long last!

Other thoughts I had on alternative ways to work around this include:
1) add side-channel logic between the motion and spindle controllers that can stop the spindle without actually changing the commanded spindle speed via G-code (M3/M5 or S commands), so the one-time wait doesn't get triggered in the first place.  This could still be sensitive to this issue if the user g-code program happened to trigger the one-time wait just before triggering the remap subroutine(s).
2) add side-channel logic to fake out spindle at-speed (hold it true) for the duration of the subroutine even when the spindle is stopped.
Both of these options seem more risky to me because of the possibility of getting into a bad state in the event of an error in the subroutine and returning to the user program with the normal spindle control still bypassed in some way, but just throwing them out as food for thought...
  • COFHAL
  • COFHAL
16 Aug 2025 14:32
Replied by COFHAL on topic AX58100

AX58100

Category: EtherCAT

 

File Attachment:

File Name: ethercat-conf.xml
File Size:6 KB
The 3000 definitely does not enter OP operating state, I think it is a problem in the config.xml file which I attach.
  • gundamgear
  • gundamgear
16 Aug 2025 14:05
Replied by gundamgear on topic Arduino IO Expansion

Arduino IO Expansion

Category: Show Your Stuff

yes that will only go away when i run terminal halrun and loadusr arduino-connector
it like hal file loadusr arduino-connector not properly load or something
  • tommylight
  • tommylight's Avatar
16 Aug 2025 13:59
Replied by tommylight on topic Arduino IO Expansion

Arduino IO Expansion

Category: Show Your Stuff

From your error report
./test.hal:95: Pin 'arduino.din.9' does not exist
  • gundamgear
  • gundamgear
16 Aug 2025 13:51 - 16 Aug 2025 14:02
Replied by gundamgear on topic Arduino IO Expansion

Arduino IO Expansion

Category: Show Your Stuff

Hello I try to use arduino connector when I set hal file to loadusr arduino-connector it not load and when I start linuxcnc it spit pin does not exist
Error report created by /usr/lib/tcltk/linuxcnc/show_errors.tcl:

Print file information:
RUN_IN_PLACE=no
LINUXCNC_DIR=
LINUXCNC_BIN_DIR=/usr/bin
LINUXCNC_TCL_DIR=/usr/lib/tcltk/linuxcnc
LINUXCNC_SCRIPT_DIR=
LINUXCNC_RTLIB_DIR=/usr/lib/linuxcnc/modules
LINUXCNC_CONFIG_DIR=
LINUXCNC_LANG_DIR=/usr/lib/tcltk/linuxcnc/msgs
INIVAR=inivar
HALCMD=halcmd
LINUXCNC_EMCSH=/usr/bin/wish8.6
LINUXCNC - 2.9.4
Machine configuration directory is '/home/cnc/linuxcnc/configs/test'
Machine configuration file is 'test.ini'
INIFILE=/home/cnc/linuxcnc/configs/test/test.ini
VERSION=1.1
PARAMETER_FILE=linuxcnc.var
TPMOD=
HOMEMOD=
TASK=milltask
HALUI=
DISPLAY=axis
COORDINATES=X Y Z
KINEMATICS=trivkins coordinates=XYZ
Starting LinuxCNC...
Starting LinuxCNC server program: linuxcncsvr
Loading Real Time OS, RTAPI, and HAL_LIB modules
Starting LinuxCNC IO program: io
linuxcnc TPMOD=tpmod HOMEMOD=homemod EMCMOT=motmod
Found file(REL): ./test.hal
Shutting down and cleaning up LinuxCNC...
Removing HAL_LIB, RTAPI, and Real Time OS modules
Removing NML shared memory segments

Debug file information:
Note: Using POSIX realtime
./test.hal:95: Pin 'arduino.din.9' does not exist
7233
Stopping realtime threads
Unloading hal components
Note: Using POSIX realtime



-----------------------------------------------------------------------
Info report created by linuxcnc_info:
The file:    /tmp/linuxcnc_info.txt
can be posted to a forum or a web site like:
     http://pastebin.com
in order to provide information about the linuxcnc
system and configuration.

                Date: Sat Aug 16 20:30:11 +07 2025
            UTC Date: Sat Aug 16 13:30:11 UTC 2025
        this program: /usr/bin/linuxcnc_info
              uptime: 20:30:11 up 1:44, 1 user, load average: 0.24, 0.30, 0.33
     lsb_release -sa: Debian Debian GNU/Linux 12 (bookworm) 12 bookworm
            linuxcnc: /usr/bin/linuxcnc
                 pwd: /home/cnc/linuxcnc/configs/test
                USER: cnc
             LOGNAME: cnc
                HOME: /home/cnc
              EDITOR:
              VISUAL:
            LANGUAGE:
                TERM: dumb
           COLORTERM:
             DISPLAY: :0.0
             DESKTOP: lightdm-xsession
        display size: 1920x1080 pixels (508x286 millimeters)
                PATH: /usr/bin:/home/cnc/linuxcnc/configs/test/bin:/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games

uname items:
         nodename -n: raspberrypi
      kernel-name -s: Linux
      kernel-vers -v: #1 SMP PREEMPT_RT Mon Jan 27 00:10:15 AEDT 2025
          machine -m: aarch64
        processor -p: unknown
         platform -i: unknown
      oper system -o: GNU/Linux

/proc items:
             cmdline: reboot=w coherent_pool=1M 8250.nr_uarts=1 pci=pcie_bus_safe cgroup_disable=memory numa_policy=interleave smsc95xx.macaddr=2C:CF:67:BC:6D:E4 vc_mem.mem_base=0x3fc00000 vc_mem.mem_size=0x40000000 console=ttyAMA10,115200 console=tty1 root=PARTUUID=a27d77aa-02 rootfstype=ext4 fsck.repair=yes loglevel=5 net.ifnames=0 processor.max_cstate=1 isolcpus=2,3 firmware_class.path=/lib/firmware/updates/brcm rootwait
          model name:
               cores:
             cpu MHz:
             parport:
              serial:

Versions:
                 gcc: gcc (Debian 12.2.0-14) 12.2.0
              python: Python 3.11.2
                 git: git version 2.39.5
          git commit: NA
                 tcl: 8.6
                  tk: 8.6
               glade: not_in_PATH

linuxcnc_var all:

     LINUXCNCVERSION: 2.9.4
LINUXCNC_AUX_GLADEVCP: /usr/share/linuxcnc/aux_gladevcp
LINUXCNC_AUX_EXAMPLES: /usr/share/linuxcnc/aux_examples
            REALTIME: /usr/lib/linuxcnc/realtime
                 RTS: uspace
          HALLIB_DIR: /usr/share/linuxcnc/hallib
              PYTHON: /usr/bin/python3

dpkg -l '*linuxcnc*':
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                Version           Architecture Description
+++-===================-=================-============-=====================================================================
un  linuxcnc            <none>            <none>       (no description available)
un  linuxcnc-dev        <none>            <none>       (no description available)
un  linuxcnc-doc        <none>            <none>       (no description available)
ii  linuxcnc-doc-en     1:2.9.4           all          motion controller for CNC machines and robots (English documentation)
un  linuxcnc-doc-es     <none>            <none>       (no description available)
un  linuxcnc-doc-fr     <none>            <none>       (no description available)
ii  linuxcnc-ethercat   1.40.0.g8a607c0-0 arm64        LinuxCNC EtherCAT HAL driver
un  linuxcnc-sim        <none>            <none>       (no description available)
un  linuxcnc-sim-dev    <none>            <none>       (no description available)
ii  linuxcnc-uspace     1:2.9.4           arm64        motion controller for CNC machines and robots
ii  linuxcnc-uspace-dev 1:2.9.4           arm64        PC based motion controller for real-time Linux


only when I use terminal to run halrun and loadusr arduino-connector then I can start linuxcnc normally but when I quit program halrun is reset and I has to load it again in order to run linuxcnc.
What I try so far
loadusr arduino-connector at begin of hal file
loadusr arduino-connector at end of hal file
[HAL]TWOPASS = on in .ini
loadusr  python3 /usr/bin/ardino-connector
loadusr -Wn arduino-connector
non of it work only run halrun in terminal work.
  • unknown
  • unknown
16 Aug 2025 11:50
Replied by unknown on topic How to set qtdragon to re-face my spoilboard

How to set qtdragon to re-face my spoilboard

Category: Qtvcp

Would be simple enough to hand code.
FreeCAD has built in CAM.
  • rodw
  • rodw's Avatar
16 Aug 2025 08:25
Replied by rodw on topic Debian Trixie upgrade/install to 2.9.4

Debian Trixie upgrade/install to 2.9.4

Category: Installing LinuxCNC

I upgrade from bookworm to trixie & ethercat work fine

I checked the ethercat repo and they had one for Debian_12 and one for Debian_Testing (trixie's pre-release name) I think the igh sources.list in /etc/apt/sources.list.d should be changed to this. The easiest way would  be to download and edit my script in a Ethercat sticky.
  • rodw
  • rodw's Avatar
16 Aug 2025 08:20
Replied by rodw on topic Debian Trixie upgrade/install to 2.9.4

Debian Trixie upgrade/install to 2.9.4

Category: Installing LinuxCNC

Yup your instructions are great, went from bookworm to trixie no problems,

-it's /etc/apt/sources list
And the grub command is something else as well, do grub- then tab, it's one of them.

Great feedback, yes I fixed the sources.list path.
And the grub-customizer command.

I was reading on Phoronix today that Trixie has higher performance in some things than Bookworm. I feel a bit cheated really. I am using Cinamon desktop and nothing has changed! :)
  • Chock
  • Chock
16 Aug 2025 07:24 - 16 Aug 2025 07:28
Replied by Chock on topic getting started , latency and breakout board questions

getting started , latency and breakout board questions

Category: General LinuxCNC Questions

Big OOPsie,   I just assumed that the Clearpath servos had absolute encoders.    THEY DON'T.
    I thought i wanted absolute encoders....  at least for the end product.   
i have a friend with a Full size WEB mill and he runs steppers,   I don't think he is in love with them,  but he has not changed them out either.

     RodW i think you are correct for a first machine,   unfortunately I only have one CNC mill.   and i dont' really want to buy a learner set of servos or steppers and then have to replace them to get a good accurate part.    That is why i was wanting to start off with ONE used small clearpath servo, and not just buy a whole set without trying one first.
     
For easy and simple the clear path  SD do seem ok.   And i don't know if i agree with you on the overpriced part,   i just looked at some steppers and by the time i get a stepper and a drive they are pretty close to the clearpath price,   It did seem like the steppers may be more powerfull for the size, is that true??
    Also I am not buying NEW NEW clearpath.   There are lots of new open box or slightly used Clearpaths for sale ,   which also makes me  wonder why so many are for sale???  

i read the thread    " some advice and opinion of the Clearpath servos",    now i need to look into that further.

Too much reading tonight  and not much closer to a servo decision 
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