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  • andypugh
  • andypugh's Avatar
19 Nov 2025 15:11
Replied by andypugh on topic Maho MH800e Retrofit Project

Maho MH800e Retrofit Project

Category: Milling Machines

the only way I was able to get any of the axis to move outside of homing is to use the halshow to select the axis for jogging. 

That sounds like you are jogging with axis-selected in halui. 

Try connecting the jogs to the motion pins:
linuxcnc.org/docs/stable/html/man/man9/m....9.html#JOINT%20PINS 
linuxcnc.org/docs/stable/html/man/man9/m...n.9.html#AXIS%20PINS
You will need to connect up the joint.N.jog.... pins to jog before homing and the axis.L.jog... pins to jog after homing. 
(An advantage of doing it this way is that you are jogging entirely in the realtime layer) 
 
  • EdWorks
  • EdWorks's Avatar
19 Nov 2025 15:09

I would like to know how to connect GPIO to LinuxCNC’s E-Stop chain.

Category: Basic Configuration

Part of failing is what you learn along the way. I know of "a rule" that eStops should be Normally Closed. Yesterday, that is all I knew. Today however, I am well-versed in ISO 13850:2015 Safety of Machinery - Emergency stop functions - Principles for design. Today I have a strong opinion that you are right! The reality is my schematic I'm using from Byte2Bot does it otherwise, so shall I.
But we divert! I don't see any GPIO25's in this banter.
  • Ringardy
  • Ringardy
19 Nov 2025 15:04 - 19 Nov 2025 15:05
Replied by Ringardy on topic Setting up a Mesa 7i95T

Setting up a Mesa 7i95T

Category: Configuration Tools

OK got the file but it tells me a whole lot of nothing i understand.

From what i understand so far is that there are bin files that are pre configured for the board.
Like in the second Picture attached.
In the first picture are what seems to me are such files which are provided by mesa.
Which basicly does nothing for me because i cant look into them or research which does what.

Trying my best to understand and get a hang of things.
 
  • Lcvette
  • Lcvette's Avatar
19 Nov 2025 14:59

problems with Y-Axis, elliptic deviations after several changes -Probe Basic V.5

Category: QtPyVCP

Also are those things correct for your steppers, they look big to me.
  • PCW
  • PCW's Avatar
19 Nov 2025 14:52 - 19 Nov 2025 22:35

problems with Y-Axis, elliptic deviations after several changes -Probe Basic V.5

Category: QtPyVCP

Are you dropping packets? that is, what is:

hm2_7i76e.0.packet-error-total

A dropped packet will result in a (bogus) following error spike,
as stale stepgen position (from the previous cycle) will be compared
with the commanded position. At a 2 ms servo thread period and 125 mm/sec
velocity, a .25 mm reported following error value is possible from a dropped
packet. Note the this does not mean that there is an actual path deviation
of this magnitude, this is bounded by the max_error PID pin to ~.0127 mm
per dropped packet.


I still think the physical error is most likely mechanical as it only shows up on Y.

To diagnose stepgen errors, the best thing is to plot the following error
with halscope like this:

 


Note that this is in inches, but the velocity and acceleration are about 4x and 6X your machines values
and the inherent stepgen error is less than  0.25 micron.

Another possibility if the system latency is really bad, is loss of DPLL sync, so you might try increasing
the DPLL time from -250 to -500 usec

 
  • romafede
  • romafede
19 Nov 2025 14:52 - 21 Nov 2025 14:42
Replied by romafede on topic Comprar a mesaUs desde argentina

Comprar a mesaUs desde argentina

Category: Español

Hola! Tambien soy Argentino. He comprado directamente a Mesanet sin problemas en varias opurtunidades y te lo envian ellos mismos por correo. Tambien puedes probar en esta pagina:
eusurplus.com/index.php?route=common/home

Si no me equivoco son de Portugal y en ocaciones puedes encontrar lo que no consigues en mesanet.

Saludos!!
  • Lcvette
  • Lcvette's Avatar
19 Nov 2025 14:39 - 19 Nov 2025 14:55

problems with Y-Axis, elliptic deviations after several changes -Probe Basic V.5

Category: QtPyVCP

are getting reported when from driver's or linuxcnc? What is the axis drive type? Bal screws or rack or belt? Edit: Nevermind saw c5 screws 

Your fixed bearing arrangement isn't ideal. Ac bearings should be matched sets requiring no intermediary spacers for preload.  Adjusting correct preload with spacers between the bearing set is incredibly variable and difficult.  It is for certain an easy way to destroy bearings as I've done it in the past and turned the balls to crumbled bits.  That said I don't think that's enough for your deviation, just a suggestion for future improvement. 

Feed forward is used with PID tuning for servos and a feed back loop, if your using simple steppers this shouldn't need an adjustment over the ff = 1

 
  • Tinker
  • Tinker
19 Nov 2025 14:02
Replied by Tinker on topic qtvcpqtdragon_hd failing to launch

qtvcpqtdragon_hd failing to launch

Category: Qtvcp

I made a spelling mistake when i entered it into the INI file. It's working now.
Thank you
  • PCW
  • PCW's Avatar
19 Nov 2025 14:01 - 19 Nov 2025 14:03
Replied by PCW on topic Setting up a Mesa 7i95T

Setting up a Mesa 7i95T

Category: Configuration Tools

Mesaflash shows physical pins, and which firmware modules are included
in the current installed firmware. What you need for hal file creation/editing
are hal pins and parameters.

To show all 7I95T hal pins and parameters:

1. Start LinuxCNC

2. In a terminal window type:

halcmd show all hm2

if you want a file containing these pins and parameters (for use as a copy/paste donor file):

halcmd show all hm2 > 7i95pins.txt

For documentation on the modules and their pins and parameters:

man hostmot2
  • ContinenteCNC
  • ContinenteCNC's Avatar
19 Nov 2025 13:47
Replied by ContinenteCNC on topic Axis Modifications

Axis Modifications

Category: AXIS

This is a mod that allows using a single key ("c") to cycle through all jog modes and increments.

From continuous to every increment in order, back to continuous.
  • Ringardy
  • Ringardy
19 Nov 2025 13:36
Replied by Ringardy on topic Setting up a Mesa 7i95T

Setting up a Mesa 7i95T

Category: Configuration Tools

Ok got the card running so far, controling a stepper motor is working.
After reading the card via mesaflash well missing a lot of pins
Only have like 57 and there compleatly wrong, was to be expected, it should have in total somewhere around 144 pins.

Unfortunatly i am unable to research what bitfile to load do to lack of documentation from mesa.
Ether im blind ore there is nothing in the docs.(see attachment)

Thanks for helping
  • Tinker
  • Tinker
19 Nov 2025 13:18
qtvcpqtdragon_hd failing to launch was created by Tinker

qtvcpqtdragon_hd failing to launch

Category: Qtvcp

Trying to launch Qtdragon that was working before a failed probe basic install is giving the following error report. Any help would be greatly appreciated!!!
  • Muftijaja
  • Muftijaja
19 Nov 2025 13:07

problems with Y-Axis, elliptic deviations after several changes -Probe Basic V.5

Category: QtPyVCP

Thanks, Hakan. Yes, yesterday I cancelled my Air-path as I could see the motor is going into alarm. I don't know if there is a following error as a reason for this, Iwill pot my serial connection to the motor today to read the logs and reproduce the error.

What I can say, mechanics are not the reason, because - what I changed just before were the entries at FERROR and MIN.FERROR to 0.1 and 0.01, exactly what is in the x-axis, which is running fine with these settings.
  • JT
  • JT's Avatar
19 Nov 2025 12:07
Replied by JT on topic Remaped Toolchange

Remaped Toolchange

Category: Flex GUI

I can't test without the files you are using or a sim config containing all the files you're using.
  • unknown
  • unknown
19 Nov 2025 12:06

realtime log position to txt use python script

Category: General LinuxCNC Questions

Just an idea.
The last position that will be recorded will be the last data that that was successfully written to the hardware from the file buffer.
Now the power going out will be for all intents and purposes a random event, there is no guarantee that any particular data will be successfully written to hardware before a power outage.
The only way I can see everything happening gracefully is with a UPS, that once detects a mains outage is able to shutdown gracefully. But the machine itself may not be in the exact position you expect due to inertia and any other unknown factors mechanical or electrical.
So basically data not being written the disk is more of a limitation of an OS when power is removed suddenly.
Also one would hope the file being written to is not stored in tmpfs (ram) then written to disc during the shutdown process of Linuxcnc.
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