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  • MaHa
23 Jan 2026 20:05
Replied by MaHa on topic LinuxCNC S-Curve Accelerations
It seems, this routine got no attention. You can do from 3 corner up to a lot, with rounded corners, configurable in the routine as desired.

forum.linuxcnc.org/42-deutsch/58236-g-code-schleifen#341677
  • rodw
23 Jan 2026 20:03
Replied by rodw on topic Trying to move from UCCNC to Linuxcnc and using 7i96s but having trouble
Please share your hal and ini file. There are some settings required to enable the Mesa encoder inputs
  • rodw
23 Jan 2026 19:55
Replied by rodw on topic Mesa 7i96S - Error finishing read! iter 8
How can you expect the 1 ms servo thread to work when it takes 1,6 Ms on average to talk to the card
Ditch the laptop! 
  • slowpoke
23 Jan 2026 19:54
Replied by slowpoke on topic Mesa 7i96S - Error finishing read! iter 8

More than USB, laptops make poor choices for linuxcnc. Too much latency inducing stuff!
 

This is more or less a clone of a previous build I did, that works great. Same 7i96s and both are using a Lenovo Yoga, this new Yoga is a bit newer. The original (working) setup uses a Lenovo dock for the Ethernet connection, this new (not working) setup used the USB-C to Ethernet adapter.
  • rodw
23 Jan 2026 19:52
Replied by rodw on topic LinuxCNC S-Curve Accelerations

BUT for a square with NO programmed corners, blend with arcs and parabolas are acceptable? 

This is hypothetical and the gcode is really bad, an error waiting to happen. You might as well attempt to cut a 7 pointed star and break things properly!
Time to get out of the office and onto a real machine!
You should be either looping the corners or adding fillets to the part. If you choose to write bad gcode, be prepared to suffer the consequences. Fixing that is your problem, not the S code developers.
  • slowpoke
23 Jan 2026 19:50
Replied by slowpoke on topic Mesa 7i96S - Error finishing read! iter 8

The USB Ethernet adapter is likely the main issue here

Running:

sudo chrt 99 ping -i .001 -q -c 60000 10.10.10.10

in a terminal window will give you an idea of the latency of the hosts Ethernet interface

( The command will run for 1 minute and then print timing statistics )

 

jeff@SM10:~$ sudo chrt 99 ping -i .001 -q -c 60000 10.10.10.10
[sudo] password for jeff: 
PING 10.10.10.10 (10.10.10.10) 56(84) bytes of data.

--- 10.10.10.10 ping statistics ---
60000 packets transmitted, 60000 received, 0% packet loss, time 102174ms
rtt min/avg/max/mdev = 1.297/1.631/3.302/0.044 ms
jeff@SM10:~$ 

Comments please
  • rodw
23 Jan 2026 19:38
Replied by rodw on topic Mesa 7i96S - Error finishing read! iter 8
More than USB, laptops make poor choices for linuxcnc. Too much latency inducing stuff!
  • rodw
23 Jan 2026 19:34
Replied by rodw on topic ARE YOU KIDDING ME YOUTUBE !!!

If you think this is on one hand not real and unworkable, but one the other hand suspect that they are "hiding something else" - What do you have in mind that they (whoever that is) want to achieve?
The dangerous precedent here is that one unelected official is given the power to do everything so there is a hidden transfer of control away from elected officials.... so it will be expanded. Fortunately, it has been banished to a committee from which it will likely never emerge...

At least in Australia all this is illegal now. You can't make firearms parts without an armourer's license... Maybe our overregulation will save us.
  • djdelorie
23 Jan 2026 19:34
Replied by djdelorie on topic Mesa Card Basics
I think that's exactly what I was looking for, and wish I had known about it years ago ;-)

Now to see how well my configuration plays with it...

Thanks!
  • andypugh
23 Jan 2026 19:22
Replied by andypugh on topic Retrofitting a 1986 Maho MH400E
You could use Halscope to see what the F-error actually is, then set the limit to some arbitrary factor of that. It wants to be high enough not to trip when there isn't a problem, but to trip if something actually is stuck.
  • Sirfrimfram
23 Jan 2026 19:18
Replied by Sirfrimfram on topic M6 Remap Issues - Weird Queue Buster Problem
The issue indeed did turn out to be related to spindle-at-speed.

Was able to fix it by ensuring spindle-at-speed was set true during tool changes.
  • andypugh
23 Jan 2026 19:17
Replied by andypugh on topic Mesa Card Basics
You can't use names= and count= at the same time.
if using HAL_TWOPASS then they all need to use names=

In your example the correct syntax is:
Code:
loadrt and2 name=probe_and addf probe_and servo-thread loadrt and2 name=estop_and addf estop_and servo-thread
  • andypugh
23 Jan 2026 19:14
Replied by andypugh on topic 1982 Matsuura MC-500v Retrofit
Home-made spindle encoders can be as simple as a slotted disc with 3 x opto sensors (like: www.amazon.co.uk/YOUMILE-Optocoupler-Sen...rduino/dp/B07TZ78N8W )

You need to make one slot a bit deeper so that only the index sees it, and arrange the others around the perimiter so that they are N + 0.25 apart. (not N + 0.5 as I once did when making an encoder)
  • andypugh
23 Jan 2026 18:45
Replied by andypugh on topic Lathe Macros
The "play" button, if visible, ought to come to life when the machine is on and homed.
  • andypugh
23 Jan 2026 18:43
Replied by andypugh on topic XHC-WHB04B-4 config difference
See the "buttons" section:
linuxcnc.org/docs/stable/html/man/man1/x...6.1.html#HAL%20USAGE

The default config is set up just to say "macroN" when you press a button.
If you want to do somethng when you press the button you need to change (debug, macro4) to a bit of G-code (or a call to a subroutine) that has the desired affect.
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