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  • Aciera
  • Aciera's Avatar
27 Oct 2025 15:51
Replied by Aciera on topic Need Help in Kinamatics of Small DIY 6dof robotic arm.

Need Help in Kinamatics of Small DIY 6dof robotic arm.

Category: Advanced Configuration

There is documentation on how to set up genserkins:
www.linuxcnc.org/docs/stable/html/motion/dh-parameters.html

I can't quite tell from the picture how many joints your arm has but genserkins will only work for manipulators with 6 joints.
  • Routerworks
  • Routerworks
27 Oct 2025 15:43
Replied by Routerworks on topic How to create profile for path that is not closed loop

How to create profile for path that is not closed loop

Category: CAD CAM

I have to say I tried every scaling combination in the book for Inkscape i.e. px,mm,in and none of them work. I keep getiing g code for an image of 250 inches for a 3 inch be 6 inch drawing. I find I can use inkscape for handling and ungrouping the svg and then import it into freecad. Freecad is much easier to handle and I get very good results.
Inkscape really has to address the conversion situation much better than it has.

Again, thanks for all your help
  • PCW
  • PCW's Avatar
27 Oct 2025 15:20
Replied by PCW on topic LinuxCNC installation + 7I96S

LinuxCNC installation + 7I96S

Category: Installing LinuxCNC

Yeah unfortunately that's not going to work.

Not sure what the EStop issue is. It  may be a LinuxCNC 2.9.4 bug,
but the easiest way forward is probably to make a pncconf
configuration (or MesaCT configuration) and if the is a EStop
logic bug, to find and fix it in the hal. file.

Another possibility is to update to 2.9.7 which is available now.
 
  • PCW
  • PCW's Avatar
27 Oct 2025 15:07
Replied by PCW on topic Which LinuxCNC HW for 2026+?

Which LinuxCNC HW for 2026+?

Category: General LinuxCNC Questions

Other possibilities:

Make sure you use a pncconf or MesaCT created configuration for Mesa hardware
as these use a number of techniques to minimize timing related  following errors:

1. Using the DPLL to retime the position sampling
2. Using the stepgens in velocity mode with a PID loop
3. Using a small PID max_error value so a dropped packet does not cause a
large bogus correction because of stale stepgen position data

#2 is especially important

To check network latency:

sudo chrt 99 ping -i -q -c 60000 [mesa_card_ip_address]

This will run for one minute and then print timing statistics.

Other possibilities are using a newer Kernel, the default RT kernels used with Debian seem
quite poor latency wise (using 6.17 currently and its decidedly better than earlier kernels)

Pinning the Ethernet IRQ to the last processor also helps (if you also isolate the last processor
on your grub command line, or however you do it on the RPI)
 
  • jmp97
  • jmp97
27 Oct 2025 15:04 - 27 Oct 2025 15:05
Replied by jmp97 on topic LinuxCNC installation + 7I96S

LinuxCNC installation + 7I96S

Category: Installing LinuxCNC

Sorry about that. I'm attaching the files. With PNCConf, I couldn't get a configuration that would even allow LinuxCNC to exit emergency mode.  

File Attachment:

File Name: 7i96s.ini
File Size:5 KB
 

File Attachment:

File Name: hm2-stepper-eth.hal
File Size:6 KB
  • PCW
  • PCW's Avatar
27 Oct 2025 14:51
Replied by PCW on topic Mesa7i96s and Postep60-250?

Mesa7i96s and Postep60-250?

Category: General LinuxCNC Questions

Did you check that you have 0V at the enables when LinuxCNC is on the power-on and EStop released state?

How are you checking motion? With normal homing setup (with home switches),
you will not be able to jog until the machine is homed.

If the enables are at 0V, anther sanity check to do is to jog in either direction
and check that the DIR pin changes polarity.
  • PCW
  • PCW's Avatar
27 Oct 2025 14:44
Replied by PCW on topic MESA 7I92 programming

MESA 7I92 programming

Category: Driver Boards

It only gave me a blank page, I tried several times all day.

That's very strange as the link should not open a webpage at all since it's a direct file download link.
  • tommylight
  • tommylight's Avatar
27 Oct 2025 14:19
Replied by tommylight on topic Flex GUI - MDI Button

Flex GUI - MDI Button

Category: Flex GUI

Should be easier to set the "double click" speed for the mouse in the mouse settings, from Linux settings.
This is from Mint, but should be similar on XFCE.

  • MaHa
  • MaHa
27 Oct 2025 13:02
Flex GUI - MDI Button was created by MaHa

Flex GUI - MDI Button

Category: Flex GUI

When the mdi-button is doubleclicked accidentally or just clicked multiple times in a short period, 
the mdi command is executed , mostly uwanted, multiple times. Is it possible to lock the button for
0.5 second or an adjustable value? 
  • amanker
  • amanker
27 Oct 2025 12:25
Need Help in Kinamatics of Small DIY 6dof robotic arm. was created by amanker

Need Help in Kinamatics of Small DIY 6dof robotic arm.

Category: Advanced Configuration

I have configured and installed LinuxCNC on RPI5 and I can control individual joint of robotic arm using trivkins. Using PCA9685 as PWM servo controller. Its work good. But I am strugling to get its kinamatic working. Here is photo of my arm with measurements. 
Here is photo of My robotic arm
 

Here are the pin values I used in genserkins
setp genserkins.A-0 0
 setp genserkins.ALPHA-0 0
 setp genserkins.D-0 83.5
 setp genserkins.A-1 45
 setp genserkins.ALPHA-1 -1.570796327
 setp genserkins.D-1 0
 setp genserkins.A-2 100.4
 setp genserkins.ALPHA-2 0
 setp genserkins.D-2 0
 setp genserkins.A-3 12
 setp genserkins.ALPHA-3 -1.570796327
 setp genserkins.D-3 195
 setp genserkins.A-4 0
 setp genserkins.ALPHA-4 1.570796327
 setp genserkins.D-4 0
 setp genserkins.A-5 0
 setp genserkins.ALPHA-5 -1.570796327
 setp genserkins.D-5 58
  • unknown
  • unknown
27 Oct 2025 12:06
Replied by unknown on topic Proposal RPi Linuxcnc Image Based on Raspi OS All welcome/encoraged to comment

Proposal RPi Linuxcnc Image Based on Raspi OS All welcome/encoraged to comment

Category: Installing LinuxCNC

I'll have a look at updating tomorrow and see how it goes.

It would appear the boot splash issue has been resolved.

Now I've looked through the threads on images and it's time for suggestions for splash, login and background images. Splash images have to be smallish PNG files.
  • unknown
  • unknown
27 Oct 2025 11:59 - 27 Oct 2025 23:09
Replied by unknown on topic 2.9.5 should not be available to download due to it being broken.

2.9.5 should not be available to download due to it being broken.

Category: Installing LinuxCNC

I think those Trixie files may have been built on Bookworm, when I built an image last night it pulled the Linuxcnc packages from Debian. Trying to manually install brought up a lot of messages regarding packages that could not be installed.
sudo apt install linuxcnc-uspace=1:2.9.6 linuxcnc-uspace-dev=1:2.9.6
Solving dependencies... Error!  
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

Unsatisfied dependencies:
 linuxcnc-uspace : Depends: python3 (< 3.12) but 3.13.5-1 is to be installed
                   Depends: libboost-python1.74.0 (>= 1.74.0+ds1) but it is not installable
                   Depends: libboost-python1.74.0-py311 but it is not installable
                   Depends: libgpiod2 (>= 1.5.1) but it is not installable
                   Depends: libpython3.11 (>= 3.11.0) but it is not installable
                   Recommends: hostmot2-firmware-all but it is not installable
Error: Unable to correct problems, you have held broken packages.
Error: The following information from --solver 3.0 may provide additional context:
   Unable to satisfy dependencies. Reached two conflicting decisions:
   1. linuxcnc-uspace:arm64=1:2.9.6 is selected as an upgrade
   2. linuxcnc-uspace:arm64=1:2.9.6 Depends python3 (< 3.12)
      but none of the choices are installable:
      [no choices]
  • rodw
  • rodw's Avatar
27 Oct 2025 10:58
Replied by rodw on topic 2.9.5 should not be available to download due to it being broken.

2.9.5 should not be available to download due to it being broken.

Category: Installing LinuxCNC

DO we actually need an image anymore of the Pi is using Trixie? Why not just try one of the official Deb files here?
linuxcnc.org/dists/trixie/2.9-uspace/binary-arm64/
  • rodw
  • rodw's Avatar
27 Oct 2025 10:51
Replied by rodw on topic Proposal RPi Linuxcnc Image Based on Raspi OS All welcome/encoraged to comment

Proposal RPi Linuxcnc Image Based on Raspi OS All welcome/encoraged to comment

Category: Installing LinuxCNC

Now that I have a working Trixie image, one image will work for the 4 & 5 would it be useful for package building for Trixie ?

I doubt it. As of today Andy has got GitHub workflows working for all OS'es including Trixie for both AMD64 and ARM and a full complement of builds on our repo at linuxcnc.org/dists
  • rodw
  • rodw's Avatar
27 Oct 2025 10:46
Replied by rodw on topic Workshop update

Workshop update

Category: Show Your Stuff

Young??? I am 55! :)
And the dog got banned from the shop for a while as i got tired of monitoring her so she does not pee at everything! :)
 

Young!!! you are still a veritable pup compared to some of us like me!
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