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  • djdelorie
  • djdelorie
27 Jan 2026 16:52

Solving the USB Latency Dogma for HMI/MPG: Technical Feedback Request

Category: Driver Boards

I'm a little unconvinced how changing to USB would have an affect on the "wiring nightmare or EMI issues".

On my machine, I have a 30ft active USB cable going from the control box to the spindle mount (it's for a camera, but I have other wires up there for other things and the cable chain is getting full).  I could see a use for another going to the tool rack (it's on the far side of the machine wrt the control box) for monitoring the pockets etc .  It's no different than running 24V and RS422 between Mesa cards, or ethernet/ethercat, but with hubs and latency :-)
As for noise, I imagine cases where replacing "home runs" to sensors with a single USB cable with CRCs would prevent some EMI spikes from triggering faults.
As always, we each have different needs and having a wide range of options available is good :-)
 
  • Nkbhvid
  • Nkbhvid
27 Jan 2026 16:44
Replied by Nkbhvid on topic Linuxcnc 2.9.4 and Mesa 7i97T

Linuxcnc 2.9.4 and Mesa 7i97T

Category: Installing LinuxCNC

Correct me if im wrong here but as far as im informed there will be no ini nor hal file before the configuration?
Since im not there yet i have none of them - or at least from what i can see
I can ping the board and mesaflash sees it but thats about it.

I'm really curious to hear if my setup with a Linuxcnc and a mesa 7i97T is a dead end street. If so I would rather stop now and go back to my safe world of PLCs and Mach
  • Mark Kraus
  • Mark Kraus
27 Jan 2026 16:03 - 28 Jan 2026 03:53

There seems to be a mistake in this pinout I found.

Category: General LinuxCNC Questions

 

File Attachment:

File Name: Bridgeportsimple2.ini
File Size:4 KB
 

File Attachment:

File Name: custom.hal
File Size:2 KB
 

File Attachment:

File Name: custom.hal
File Size:2 KB

File Attachment:

File Name: custom.hal
File Size:2 KB

File Attachment:

File Name: Bridgeportsimple2.ini
File Size:4 KB

File Attachment:

File Name: Bridgeportsimple2.hal
File Size:11 KB
  • tommylight
  • tommylight's Avatar
27 Jan 2026 15:50
Replied by tommylight on topic Trying to get a wireless HDMI adapter working

Trying to get a wireless HDMI adapter working

Category: Computers and Hardware

Look for Asus ZenScreen , usually over 100$ but often under on sale.
For some reason, 15.6" are cheaper than 14" !
Also, get the IPS version, not the TN or VA versions.
  • karlhe
  • karlhe
27 Jan 2026 15:02 - Yesterday 15:23

bearbeitungsbildschirm wieder sichtbar machen, maschine läuft

Category: General LinuxCNC Questions

Vielen Dank,

das teil ist gefräst, alles gut.

danke karlhe

Hallo, ich habe das noch einmal nachvollzogen.
Bearbeitungsbildschirm wieder herstellen:
taste strg und taste alt  drücken, dann pfeiltasten li bzw. rechts
tschüß
karlhe


 
  • yoshimitsuspeed
  • yoshimitsuspeed
27 Jan 2026 15:02
Replied by yoshimitsuspeed on topic Trying to get a wireless HDMI adapter working

Trying to get a wireless HDMI adapter working

Category: Computers and Hardware

Yeah I got it casting with the quadro card installed and plugged into that card it does work up to the GRUB menu then turns off during boot.
  • yoshimitsuspeed
  • yoshimitsuspeed
27 Jan 2026 15:00
Replied by yoshimitsuspeed on topic Trying to get a wireless HDMI adapter working

Trying to get a wireless HDMI adapter working

Category: Computers and Hardware

A longer cable was definitely my first thought but it's still one more thing to trip over and need to remember any time I move the machine or anything.

Thanks for the heads up about the Nvidia driver. Glad I didn't try it.

The wireless setup does display the GRUB menu when plugged into the quadro card, just not when plugged into the Optiplex 9020 (or whatever it is) internal graphics port.
I'll try the "nomodeset" test.

If that doesn't work I'm still torn on whether it would be worth getting a cheap GPU with HDMI to try.

I am also considering trying to attach a smaller monitor to my machine. At the time a bigger monitor separate made sense but maybe I could find a way to attach an arm and a 12-15 ish inch monitor in a way that wasn't too obnoxious.

Of course then that gets me wondering.
Is there any sub $100ish touchscreen in that size range that would have 1920x1080 for Probe Basic that would be relatively plug and play?
  • tommylight
  • tommylight's Avatar
27 Jan 2026 14:57

Mesa 7i96S + THCAD-2 for slow stand-off control (laser cleaning, auto air paint)

Category: Driver Boards

All that seems easy enough and Mesa combo should be more than enough fast for everything you mentioned.
1. Yes
2. No, unless you need something extremely fast, 1000Hz is normal servo rate, and even that can be pushed further
3. should all be doable easily, and 10Hz is very slow
-
In general, plasma is the biggest offender regarding EMI noise, so you should be perfectly fine, granted the wiring and grounding and shielding is done correctly.
Regarding XYZ, it will be much easier to do a normal CNC machine setup, everything else can be set in gcode or some automated VCP panel to make use much easier and requires one time setups.
-
I have been tasked with such painting automation about 15 years ago but the financing failed, still had some time to do some thinking about implementation, hence i might be a bit fuzzy on details.
Go for it, that would be my personal advice.
  • tiagounderground
  • tiagounderground
27 Jan 2026 14:43
Replied by tiagounderground on topic Absolute encoder homing

Absolute encoder homing

Category: General LinuxCNC Questions

i had the same problem, to overcome this i used home offset=0 and added an offset in pos comand
  • tommylight
  • tommylight's Avatar
27 Jan 2026 14:42

bearbeitungsbildschirm wieder sichtbar machen, maschine läuft

Category: General LinuxCNC Questions

1. press and hold down ALT and press TAB then release TAB while still holding down ALT
2. press and hold CTRL+ALT and press left or right arrow key while still holding down CTRL+ALT
  • karlhe
  • karlhe
27 Jan 2026 14:27

bearbeitungsbildschirm wieder sichtbar machen, maschine läuft

Category: General LinuxCNC Questions

Der Bearbeitungsbildschirm ist nicht sichtbar, ich fräse gerade ein teil.

Ich kann kein halt eingeben, keinen button drücken..

den Fräsvorgang abbrechen möchte ich aber nicht.
  • karlhe
  • karlhe
27 Jan 2026 14:16

bearbeitungsbildschirm wieder sichtbar machen, maschine läuft

Category: General LinuxCNC Questions

Hallo,
 ich habe den Bearbeitungsbildschirm weggeschaltet.

Wie kann ich den wieder sichtbar machen? die maschine läuft..

Dnke für Eure hilfe..

Karlhe
  • tommylight
  • tommylight's Avatar
27 Jan 2026 13:30

There seems to be a mistake in this pinout I found.

Category: General LinuxCNC Questions

Just attach them below the editor, like this
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