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  • tommylight
  • tommylight's Avatar
21 Apr 2025 21:43
Replied by tommylight on topic boxford 160tcl

boxford 160tcl

Category: General LinuxCNC Questions

Not sure, your pictures show a normal single led/sensor device, but the schematics show a dual led/sensor device.
How many wires does yours have on each side?
  • vre
  • vre
21 Apr 2025 21:27 - 21 Apr 2025 21:29
Replied by vre on topic Digital Input

Digital Input

Category: O Codes (subroutines) and NGCGUI

The code needs a digital input pin for stopped-spindle to work
because i do not have this stopped-spindle digital input how can check
in subroutine code if spindle is stopped ?

mesa_input_pin can be hm2_7i80.0.gpio.003.in
  • Turners
  • Turners
21 Apr 2025 21:21
Replied by Turners on topic boxford 160tcl

boxford 160tcl

Category: General LinuxCNC Questions

uk.rs-online.com/web/p/slotted-optical-switches/8801993

would this be the same?
  • cakeslob
  • cakeslob
21 Apr 2025 21:02
Replied by cakeslob on topic ChatGPT LinuxCNC Assistent

ChatGPT LinuxCNC Assistent

Category: Configuration Tools

whole halfile is wrong. its trying to mix other linuxcnc stepgen with remora

from ai
# Verbinden von Stepgen (Benutzermodus) mit den Achsen
setp stepgen.0.scale [JOINT_0]SCALE
setp stepgen.0.maxaccel [JOINT_0]STEPGEN_MAXACCEL
setp stepgen.0.position-scale [JOINT_0]SCALE

# Joins zu den richtigen Positionen und Feedbacks verbinden
net j0pos-cmd joint.0.motor-pos-cmd => stepgen.0.position-cmd
net j0pos-fb stepgen.0.position-fb => joint.0.motor-pos-fb
net j0enable joint.0.amp-enable-out => stepgen.0.enable

# Stepgen und remora zu den Echtzeit-Threads hinzufügen
addf stepgen.0.update servo-thread
# Den Remora-Modul initialisieren
setp remora.joint.0.pos-cmd 0

# Achsenzuweisung
net x-pos-cmd axis.x.motor-pos-cmd => remora.stepgen.00.position-cmd
net x-pos-fb  remora.stepgen.00.position-fb => axis.x.motor-pos-fb
net x-enable  axis.x.amp-enable-out => remora.stepgen.00.enable


from a remora example
# load the Remora real-time component
	loadrt remora-eth-3.0 PRU_base_freq=500000

# joint 0 setup (X axis)
	setp remora.joint.0.scale 		[JOINT_0]SCALE
	setp remora.joint.0.maxaccel 	[JOINT_0]STEPGEN_MAXACCEL
	net j0pos-cmd 		joint.0.motor-pos-cmd 	=> remora.joint.0.pos-cmd
	net j0pos-fb 		remora.joint.0.pos-fb 	=> joint.0.motor-pos-fb
	net j0enable 		joint.0.amp-enable-out 	=> remora.joint.0.enable


same with the inputs, its mashing up the other linuxcnc inputs with remora inputs

from AI
net lid-switch   <= remora.input.16.in
net start-btn    <= remora.input.17.in

remora code
net X-home 	remora.input.00
  • vre
  • vre
21 Apr 2025 21:02
Replied by vre on topic spindle with encoder

spindle with encoder

Category: Basic Configuration

For rigid tapping i need only index signal from spindle shaft
A-B signals can come from elsewhere the encoder is mounted that is not 1:1 ratio correct ?
  • tommylight
  • tommylight's Avatar
21 Apr 2025 20:57
Replied by tommylight on topic boxford 160tcl

boxford 160tcl

Category: General LinuxCNC Questions

Old photocopiers have plenty of those, if you can scour one, and some bigger printers.
  • pgf
  • pgf
21 Apr 2025 20:57
Replied by pgf on topic After homing X and Y, can I auto move to a non 0,0 location?

After homing X and Y, can I auto move to a non 0,0 location?

Category: General LinuxCNC Questions

Thank you very much. Homing works just the way I want it now.

I agree completely about naming -- it's very important. I didn't realize HOME_OFFSET was an absolute location until I got this working -- the word "offset" implies "delta" to me, not "location".  

As for the sign of HOME_SEARCH_VEL and HOME_LATCH_VEL, I've decided to try them with different signs, to eliminate the backoff step, as you suggest.  There may be (probably is) a difference between where the switch closes and where it opens, but for my mill I'm sure it won't matter, for homing purposes.

My final X config is this.  Y is identical, except HOME is 0, not 6, to keep the bed at maximum extension toward me.
MIN_LIMIT = -0.001
MAX_LIMIT = 12.0
HOME_IS_SHARED = 1
HOME = 6 
HOME_OFFSET = 12.1
HOME_SEARCH_VEL = .2
HOME_LATCH_VEL = -0.015
HOME_FINAL_VEL = 0  
HOME_USE_INDEX = NO
HOME_IGNORE_LIMITS = YES
HOME_SEQUENCE = 2
  • Ultrakurz
  • Ultrakurz
21 Apr 2025 19:16
Replied by Ultrakurz on topic Linuxcnc 2.9.2 and 2.93 images for Raspberry Pi 4b & 5

Linuxcnc 2.9.2 and 2.93 images for Raspberry Pi 4b & 5

Category: Installing LinuxCNC

Hello gentlemen !

Im a Newby and want to run a CNC-mill with a Mesa 7i76E and a Rpi 5.
I have  read the thread and think a RPI 5  with 8 GB will be  the right choice for
bookworm and the mesa. The 16 GB RPI5  won't work or is there any kind of news ?
The freason for the question is that i have to buy a RPI but which one is the best opinion and why ?
Can you help me ?

Thanks   a lot
Ultrakurz
 
  • Muecke
  • Muecke's Avatar
21 Apr 2025 18:53
Replied by Muecke on topic [OT] Linux Uhr stimmt nicht

[OT] Linux Uhr stimmt nicht

Category: Deutsch

Hey,

da ich nicht so oft mit dem Linux Rechner arbeite fällt mir so etwas nicht immer sofort auf.Allerdings habe ich den Eindruck, dass auf dem Rechner einiges nicht mehr stimmt, da auch der Firefox auf einmal in Englisch ist. und ich ihn nicht umgestellt bekommen habe, ohne ihn zu deinstallieren und neu zu installieren. jedoch funktioniert das System im Moment und ich hoffe, dass das auch so bleibt, ich habe keine Lust schon wieder das System neu aufzusetzen, da das echt viel Arbeit für mich ist, da ich nicht weiß, was ich wie machen soll.

VG Mücke
  • PCW
  • PCW's Avatar
21 Apr 2025 18:48
Replied by PCW on topic Issue with inconsistent spindle RPM readings on Mesa 7i76e + LinuxCNC setup

Issue with inconsistent spindle RPM readings on Mesa 7i76e + LinuxCNC setup

Category: General LinuxCNC Questions

It could be a wiring/noise issue but typically this is because of the relatively
instantaneous velocity estimation (typically updated every ms), which tends
to accentuate the encoder inaccuracies. This fast update is important if a feedback
loop is used but a nuisance for a human readable display.

The way this is typically fixed is by low pass filtering the encoder velocity signal
before displaying it. If this has already been done, you might increase the time
constant of the filter
  • spumco
  • spumco
21 Apr 2025 18:43 - 21 Apr 2025 18:51
Replied by spumco on topic After homing X and Y, can I auto move to a non 0,0 location?

After homing X and Y, can I auto move to a non 0,0 location?

Category: General LinuxCNC Questions

If the HOME_SEARCH_VEL and HOME_LATCH_VEL are positive, the axis will move to the switch, back off it, and re-engage it at LATCH_VEL until the signal changes state (again).

If the HOME_LATCH_VEL is negative, the axis will move off the switch and stop as soon as the signal changes state.  No 2nd move back on to the switch, so potentially done slightly faster if your LATCH velocities are really slow.

I think one of the contributing reasons LCNC's homing is so confusing is simply the terminology selected by the developers years ago.  The terms made sense to them, of course, but I think more differentiation in terms would make homing configuration more intuitive.

Such as changing HOME_OFFSET to HOME_SWITCH_LOCATION or similar.

And of course, the current terms make sense to some people so changes would make things confusing to them.  There's no perfect answer when it comes to preferences.
  • besriworld
  • besriworld
21 Apr 2025 18:40 - 21 Apr 2025 19:33
Replied by besriworld on topic OLD Lathe conversion to a CNC

OLD Lathe conversion to a CNC

Category: Turning

I'm not sure if this is the right place to ask about this issue, but I'm experiencing a strange and potentially dangerous problem.

I was running the same program all day without any issues. However, I had to stop the program halfway through due to a broken insert. First, I paused the program, then stopped the spindle, and finally stopped the G-code execution. The spindle was running with G96 (constant surface speed).

After fixing the issue, I reloaded the same G-code. But when the machine started moving with a G1 command, it moved at maximum speed right away. I couldn’t get it to execute G1 correctly until I restarted the LinuxCNC software.

Does anyone know what might be causing this? I was very lucky there was no damage.
I've also uploaded a video showing the problem.




Adding my configuration :


 

File Attachment:

File Name: my_LinuxCN...4-21.ini
File Size:4 KB


File Attachment:

File Name: my_LinuxCN...4-21.hal
File Size:14 KB


Is there anything wrong there?
  • Turners
  • Turners
21 Apr 2025 18:32
boxford 160tcl was created by Turners

boxford 160tcl

Category: General LinuxCNC Questions

Hi all 
I'm trying to piece together a boxford 160 to standard.
almost there I have all axis wired up and runing.
anyone know where I can find the correct one of these?
it's a minefield looking on rs components
it's a microsensor but looking at specs they dont macth what I think I need. any advice would be great..
  • andypugh
  • andypugh's Avatar
21 Apr 2025 18:25
Replied by andypugh on topic spindle with encoder

spindle with encoder

Category: Basic Configuration

Also, it is perfectly possible to have the index and A/B phases on different shafts. A prox sensor picking up a keyway / bolt whatever on the spindle can work fine.
  • andypugh
  • andypugh's Avatar
21 Apr 2025 18:23
Replied by andypugh on topic spindle with encoder

spindle with encoder

Category: Basic Configuration

You can't do multi-pass threading (lathe, or peck-rigid) if the index isn't 1:1 with the actual spindle.
But, for single-pass rigid tapping it doesn't matter where the index is as long a the encoder scale accounts for the gearing.
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