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  • unknown
  • unknown
18 May 2025 07:12
Replied by unknown on topic Linuxcnc 2.9.4 .iso on Rpi5: apt update does not build /boot/initrd.gz

Linuxcnc 2.9.4 .iso on Rpi5: apt update does not build /boot/initrd.gz

Category: Installing LinuxCNC

Why did you a dist-upgrade ?

The kernel is a custom kernel (this has been explained in the first thread of the Rpi image thread) and does not come from the debian repos (the kernel sources are from the RPi github repo and contain patches specific to the RPi platform), from memory the debian kernel packages don't have the RPi patches nor support for dymanic device, eg spi, I2C and such.

Save your configs, reinstall and don't do a dist upgrade, there is no need to upgrade the kernel, if you do have stability related issues related to the kernel please make a report in the forum.

Not being to turn off the Rpi could be related to a device tree issue, eg the GPIO that is used is not setup correctly.
  • Aciera
  • Aciera's Avatar
18 May 2025 07:04 - 18 May 2025 07:05
Replied by Aciera on topic Resetting A-axis

Resetting A-axis

Category: G&M Codes

Try removing the LIMIT entries from the JOINT_n sections. That should set the value to +/- 1e99 which no machine will ever reach.


 
linuxcnc.org/docs/2.8/html/config/ini-co...t__lt_num_gt_section

 
  • dannym
  • dannym
18 May 2025 06:28
Replied by dannym on topic Resetting A-axis

Resetting A-axis

Category: G&M Codes

I tried G10 L20 P0 A0

This doesn't work. It's resetting the work coords to 0 so the G-code works at first, but continues incrementing A0 indefinitely in machine coords. After about 10 runs, the G-code faulted mid-run, says the next command would move joint 3 past machine limits.

At that point, A has reached 9800 or so, ini limited A to 10,000. I can put in a larger number. but we're just kicking this can down the road.

Can I reset the machine coord value, or is there a way to say the A axis has no limits on how many times it can turn?
  • RotarySMP
  • RotarySMP's Avatar
18 May 2025 06:01
Replied by RotarySMP on topic Index homing Heidenhain ls 403/exe602

Index homing Heidenhain ls 403/exe602

Category: Basic Configuration

My Maho homes off the Heindenhain LS-403 scale index marks. Works the same as homing to a a separate homing switch.
  • oddwick
  • oddwick's Avatar
18 May 2025 03:37 - 31 May 2025 02:41
[SOLVED] MesaCT problems with 7i96 pwm spindle was created by oddwick

[SOLVED] MesaCT problems with 7i96 pwm spindle

Category: Configuration Tools

Having ome slight problems here and was looking to see if someone could give me a hand.  I am finishing up a build and the last piece of the puzzle is the spindle and some of the outputs.

I am using a 7i96 that was reused from another machine and was set up for 4 step 1 pwm.  not sure the version of the firmware, but it should not need to be changed.  The computer is a clean install of 2.9 and the original configs from the previous machine doesn't work.  It was made using jt's 7i96 tool and then heavily modified.  so as of right now, I have most everything set up using mesaCT with some generic general values just to make sure that i can move and home each axis. so far so good.  

The spindle is 2.2kw 220v using a huanyang ec01 vfd which takes a 10v pwm signal so i have it ran through a small analog converter from the mesa board.  Now when i try and add the spindle to the config in mesaCT, all of the spindle controls are greyed out even though in options i have it set as 4 step 1 spindle and in axis, there is no spindle option right now. 

also, for some reason i can not get axis to turn on my relays either using mesaCT.  I have them set as mist/flood right now for testing, but i get nothing.  are these some bugs with mesaCT or am i just missing something obvious?  Thanks!
  • aikiaviator
  • aikiaviator
18 May 2025 02:49
Replied by aikiaviator on topic spindle control of PM-728vt using linuxcnc

spindle control of PM-728vt using linuxcnc

Category: Milling Machines

Hi I have the same unit and on the high speed gearing, (up to 4000, I cant get to run below 500RPM. Are you finding that also?
  • rdtsc
  • rdtsc's Avatar
18 May 2025 02:19 - 18 May 2025 02:35
Linuxcnc 2.9.4 .iso on Rpi5: apt update does not build /boot/initrd.gz was created by rdtsc

Linuxcnc 2.9.4 .iso on Rpi5: apt update does not build /boot/initrd.gz

Category: Installing LinuxCNC

Hi, have been using LinuxCNC since 2.9.0~pre1 on a Rpi4.  Now have 2.9.4 or an Rpi5 and things were working great, until I did a sudo apt dist-upgrade earlier today.  After, I cannot shut the Rpi5 off, because apt removed the /boot/initrd.gz file:
...
Setting up libmagickcore-6.q16-6-extra:arm64 (8:6.9.11.60+dfsg-1.6+deb12u3) ...
Setting up libpython3.11-stdlib:arm64 (3.11.2-6+deb12u6) ...
Setting up linux-headers-6.1.0-35-arm64 (6.1.137-1) ...
/etc/kernel/header_postinst.d/dkms:
dkms: running auto installation service for kernel 6.1.0-35-arm64.
Sign command: /usr/lib/linux-kbuild-6.1/scripts/sign-file
Signing key: /var/lib/dkms/mok.key
Public certificate (MOK): /var/lib/dkms/mok.pub

Building module:
Cleaning build area...
kernelver=6.1.0-35-arm64 ./dkms-make.sh.........................................
Signing module /var/lib/dkms/rtl8821cu/5.12.0.4/build/8821cu.ko
Cleaning build area...

8821cu.ko:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/6.1.0-35-arm64/updates/dkms/
depmod...
dkms: autoinstall for kernel: 6.1.0-35-arm64.
Setting up python3.11 (3.11.2-6+deb12u6) ...
Setting up linux-headers-arm64 (6.1.137-1) ...
Setting up libpython3.11:arm64 (3.11.2-6+deb12u6) ...
Processing triggers for systemd (252.36-1~deb12u1) ...
Processing triggers for man-db (2.11.2-2) ...
Processing triggers for cracklib-runtime (2.9.6-5+b1) ...
Processing triggers for mailcap (3.70+nmu1) ...
Processing triggers for desktop-file-utils (0.26-1) ...
Processing triggers for libc-bin (2.36-9+deb12u10) ...
Processing triggers for initramfs-tools (0.142+deb12u3) ...
update-initramfs: Generating /boot/initrd.img-6.12.12+bpo-rt-arm64
update-initramfs: Generating /boot/initrd.gz
cp: target '/boot/initrd.gz': No such file or directory
cp: target '/boot/broadcom/initrd.gz': No such file or directory
linuxcnc@linuxcncpi:~$ what the...

See the rpi-1 attachment for the complete text:

File Attachment:

File Name: rpi-1_fail...mand.txt
File Size:17 KB


Note, the (highly finnicky) rtl8821cu wifi dongle driver was installed about a month ago.  Apt did attempt to rebuild this driver for kernel 6.1.0-35, but that was an old kernel and (now at least) no longer exists in /boot.  Now in there, are only 6.12.11 and 6.12.12+bpo-rt-arm64.  Note the latter is much larger than the previous:
linuxcnc@linuxcncpi:/boot$ ls -ag
total 170932
drwxr-xr-x 3 root 4096 May 17 16:16 .
drwxr-xr-x 18 root 4096 Mar 10 18:49 ..
drwxr-xr-x 3 root 16384 Dec 31 1969 broadcom
-rw-r--r-- 1 root 245283 Jan 26 07:36 config-6.12.11
-rw-r--r-- 1 root 332811 Feb 23 13:00 config-6.12.12+bpo-rt-arm64
lrwxrwxrwx 1 root 14 May 17 16:16 firmware -> /boot/broadcom
-rw-r--r-- 1 root 26624512 Jan 26 07:36 Image
-rw-r--r-- 1 root 22391722 May 17 16:16 initrd.img-6.12.11
-rw-r--r-- 1 root 71401400 May 17 16:15 initrd.img-6.12.12+bpo-rt-arm64
-rw-r--r-- 1 root 4085277 Jan 26 07:36 System.map-6.12.11
-rw-r--r-- 1 root 83 Feb 23 13:00 System.map-6.12.12+bpo-rt-arm64
-rw-r--r-- 1 root 9535537 Jan 26 07:36 vmlinuz-6.12.11
-rw-r--r-- 1 root 40374208 Feb 23 13:00 vmlinuz-6.12.12+bpo-rt-arm64
linuxcnc@linuxcncpi:/boot$

I can't get update-initramfs -c -k all -v to build the /boot/initrd.gz; it always complains with: cp: target '/boot/initrd.gz': No such file or directory

File Attachment:

File Name: rpi-2_upda...bose.txt
File Size:37 KB


I've updated the rtl8821cu driver, rebuilt and reinstalled it, but this did not help.  Then I removed it completely; same.  Thoughts?  Thanks much for taking a look.

P.S. A really, really good idea would be to, right now, sudo nano /etc/initramfs-tools/update-initramfs.conf and change backup_initramfs=yes
  • Thayloreing
  • Thayloreing
18 May 2025 02:09
Replied by Thayloreing on topic Remora - ethernet NVEM / EC300 / EC500 cnc board

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

Please, I've been trying for months without success. Everything seems to be fine, but I can't compile it onto the board. I'm using v5 of the cloud. I have no idea what it could be. I see that everyone follows the steps and it works. However, I even had a lot of trouble installing pyocd, but with a lot of effort I finally managed to do it. Please, can someone tell me what I'm doing wrong?
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