Re: [Emc-users] .ini file questions

[Gene Heskett]

On Thursday 11 July 2019 16:44:02 andy pugh wrote:

> On Thu, 11 Jul 2019 at 21:21, John Dammeyer  
wrote:
> > At the command line level I even tried typing in Mousepad and it
> > couldn't find the application.
>
> It isn't capitalised.  ie, "mousepad" should start it.
>
> Gedit is a bit of a heavy install on Stretch, I would suggest Geany
> instead. (though I din't think that Geany can do source-highlighiting
> for g-code)

I think it does have a pluggin for that. But the colors it used made it 
harder for me to follow the code, too distracting. YMMV of course.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] .ini file questions

[Gene Heskett]

On Thursday 11 July 2019 13:12:17 John Dammeyer wrote:

> > The value "HOME_OFFSET=" is the number value given to the point
> > where the home switch changes during the home_latch move.
> > The value "HOME=" is the position the joint will move to (relative
> > to the "HOME_OFFSET=" point) at the feed rate specified by
> > "HOME_FINAL_VEL=".
> >
> > So If you're using your negative limit switch as the home switch,
> > and specify HOME_OFFSET=-1 and HOME=0 after probing the switch the
> > axis will move to 1" (or 1mm) away from the switch with that point
> > given the value of 0 in the g53 machine coordinates.  If you were to
> > set HOME_OFFSET=0 and HOME=1, the point the machine would stop would
> > still be the same but that position would now be given the value of
> > 1 in the machine coordinates.
> >
> > Todd Zuercher
>
> Thanks.  I tried all that and now it's perfect for me.  It allows the
> fairly significant X axis backlash to be taken out without re-tripping
> the home/limit switch which was a bit of an issue. To get around it I
> reduced the backlash setting which caused its own set of problems. 
> All good now.
>
> Now for the EDITOR setting.   I can load a G-Code file, select the
> menu entry to edit a file.  If it's the LCNC one loaded at start-up
> I'm told it's read only.  If it's one of mine, nothing happens.  No
> editor. Nothing.
>
> I've been using Mousepad outside of LCNC but setting Editor to
> Mousepad doesn’t work nor does setting it to the desktop link
> /usr/share/applications.   Unlike Windows, unfortunately the link
> doesn't actually specify where the executable is.
>
> So what can I do.  How do I specify the editor so that it runs with
> the currently loaded G-Code file?
>
> From the doc:
> EDITOR = gedit - The editor to use when selecting File > Edit to edit
> the G code from the AXIS menu. This must be configured for this menu
> item to work. Another valid entry is gnome-terminal -e vim.
>
First off, that gedit is an accidental code scrambler, evict it from the 
facility. Give your machine a net cable, Then use synaptic to survey 
what might be handy to go with geany.  It has a plethora of pluggins.

And then edit that .ini file to say geany.  It has not made a mistake 
that wasn't my own clumsy fat & ancient fingers in 4 or so years and its 
never scrambled a big 800 loc .hal file yet.
>
>
>
>
>
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] .ini file questions

[John Dammeyer]

Thanks everyone,

Well now that was just too bloody simple.
I had tried 
mousepad
Mousepad
MousePad
 and even
mousePad

Along with paths to it.

Nothing worked.  Clearly I must have spelled mousepad with all lower case 
incorrectly and just not seen that.  Because now it works.

Sheesh.  Sorry for wasting everyone's time on that.
John



> -Original Message-
> From: andy pugh [mailto:bodge...@gmail.com]
> Sent: July-11-19 1:44 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] .ini file questions
> 
> On Thu, 11 Jul 2019 at 21:21, John Dammeyer 
> wrote:
> 
> >
> > At the command line level I even tried typing in Mousepad and it couldn't
> > find the application.
> 
> 
> It isn't capitalised.  ie, "mousepad" should start it.
> 
> Gedit is a bit of a heavy install on Stretch, I would suggest Geany
> instead. (though I din't think that Geany can do source-highlighiting for
> g-code)
> 
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is designed
> for the especial use of mechanical geniuses, daredevils and lunatics."
> � George Fitch, Atlanta Constitution Newspaper, 1916
> 
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Re: [Emc-users] .ini file questions

[andy pugh]

On Thu, 11 Jul 2019 at 21:21, John Dammeyer  wrote:

>
> At the command line level I even tried typing in Mousepad and it couldn't
> find the application.


It isn't capitalised.  ie, "mousepad" should start it.

Gedit is a bit of a heavy install on Stretch, I would suggest Geany
instead. (though I din't think that Geany can do source-highlighiting for
g-code)

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is designed
for the especial use of mechanical geniuses, daredevils and lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916

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Re: [Emc-users] .ini file questions

[Mark Wendt]

On Thu, Jul 11, 2019 at 4:21 PM John Dammeyer  wrote:
>
> > From: Milosz K. [mailto:milo...@gmail.com]
> > For AXIS INI setting "EDITOR=gedit" to work, you must have gedit installed.
>
> Well yes.  But that doesn't explain how to get Mousepad to work.  Notice from 
> the help terminal in typical Linux documentation it tells what to do and not 
> why.  So why:
> gnome-terminal -e vim
>
> At the command line level I even tried typing in Mousepad and it couldn't 
> find the application.  From the menu it's referred to as 
> /usr/share/applications but not where it is.  So how does Linux find this and 
> therefore how do I get LinuxCNC to find this?
>
> John

Never used Mousepad.  Are you sure it's spelled and capitalized like
that?  Typing 'which Mousepad' or 'which mousepad' on the command line
will tell you where it's at if it's installed and in your $PATH.  The
command 'gnome-terminal -e vim' opens an editing session in vim in a
terminal window.  "vim" is sorta kinda like a friendlier version of
"vi", my favorite editor.

Mark


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Re: [Emc-users] .ini file questions

[John Dammeyer]

> From: Milosz K. [mailto:milo...@gmail.com]
> For AXIS INI setting "EDITOR=gedit" to work, you must have gedit installed.

Well yes.  But that doesn't explain how to get Mousepad to work.  Notice from 
the help terminal in typical Linux documentation it tells what to do and not 
why.  So why:
gnome-terminal -e vim

At the command line level I even tried typing in Mousepad and it couldn't find 
the application.  From the menu it's referred to as /usr/share/applications but 
not where it is.  So how does Linux find this and therefore how do I get 
LinuxCNC to find this?

John


> 
> On Thu, Jul 11, 2019 at 1:15 PM John Dammeyer 
> wrote:
> 
> > So what can I do.  How do I specify the editor so that it runs with the
> > currently loaded G-Code file?
> >
> > From the doc:
> > EDITOR = gedit - The editor to use when selecting File > Edit to edit the
> > G code from the AXIS menu. This must be configured for this menu item to
> > work. Another valid entry is gnome-terminal -e vim.
> >
> >
> >
> >
> >
> >
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> >
> 
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Re: [Emc-users] .ini file questions

[Milosz K.]

For AXIS INI setting "EDITOR=gedit" to work, you must have gedit installed.

On Thu, Jul 11, 2019 at 1:15 PM John Dammeyer 
wrote:

> > The value "HOME_OFFSET=" is the number value given to the point where
> > the home switch changes during the home_latch move.
> > The value "HOME=" is the position the joint will move to (relative to the
> > "HOME_OFFSET=" point) at the feed rate specified by "HOME_FINAL_VEL=".
> >
> > So If you're using your negative limit switch as the home switch, and
> specify
> > HOME_OFFSET=-1 and HOME=0 after probing the switch the axis will move
> > to 1" (or 1mm) away from the switch with that point given the value of 0
> in
> > the g53 machine coordinates.  If you were to set HOME_OFFSET=0 and
> > HOME=1, the point the machine would stop would still be the same but that
> > position would now be given the value of 1 in the machine coordinates.
> >
> > Todd Zuercher
>
> Thanks.  I tried all that and now it's perfect for me.  It allows the
> fairly significant X axis backlash to be taken out without re-tripping the
> home/limit switch which was a bit of an issue. To get around it I reduced
> the backlash setting which caused its own set of problems.  All good now.
>
> Now for the EDITOR setting.   I can load a G-Code file, select the menu
> entry to edit a file.  If it's the LCNC one loaded at start-up I'm told
> it's read only.  If it's one of mine, nothing happens.  No editor.
> Nothing.
>
> I've been using Mousepad outside of LCNC but setting Editor to Mousepad
> doesn’t work nor does setting it to the desktop link
> /usr/share/applications.   Unlike Windows, unfortunately the link doesn't
> actually specify where the executable is.
>
> So what can I do.  How do I specify the editor so that it runs with the
> currently loaded G-Code file?
>
> From the doc:
> EDITOR = gedit - The editor to use when selecting File > Edit to edit the
> G code from the AXIS menu. This must be configured for this menu item to
> work. Another valid entry is gnome-terminal -e vim.
>
>
>
>
>
>
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Re: [Emc-users] .ini file questions

[John Dammeyer]

> The value "HOME_OFFSET=" is the number value given to the point where
> the home switch changes during the home_latch move.
> The value "HOME=" is the position the joint will move to (relative to the
> "HOME_OFFSET=" point) at the feed rate specified by "HOME_FINAL_VEL=".
> 
> So If you're using your negative limit switch as the home switch, and specify
> HOME_OFFSET=-1 and HOME=0 after probing the switch the axis will move
> to 1" (or 1mm) away from the switch with that point given the value of 0 in
> the g53 machine coordinates.  If you were to set HOME_OFFSET=0 and
> HOME=1, the point the machine would stop would still be the same but that
> position would now be given the value of 1 in the machine coordinates.
> 
> Todd Zuercher

Thanks.  I tried all that and now it's perfect for me.  It allows the fairly 
significant X axis backlash to be taken out without re-tripping the home/limit 
switch which was a bit of an issue. To get around it I reduced the backlash 
setting which caused its own set of problems.  All good now.

Now for the EDITOR setting.   I can load a G-Code file, select the menu entry 
to edit a file.  If it's the LCNC one loaded at start-up I'm told it's read 
only.  If it's one of mine, nothing happens.  No editor. Nothing.  

I've been using Mousepad outside of LCNC but setting Editor to Mousepad doesn’t 
work nor does setting it to the desktop link /usr/share/applications.   Unlike 
Windows, unfortunately the link doesn't actually specify where the executable 
is.

So what can I do.  How do I specify the editor so that it runs with the 
currently loaded G-Code file?

From the doc:
EDITOR = gedit - The editor to use when selecting File > Edit to edit the G 
code from the AXIS menu. This must be configured for this menu item to work. 
Another valid entry is gnome-terminal -e vim.






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Re: [Emc-users] First project with LinuxCNC.

[John Dammeyer]

> From: Roland Jollivet [mailto:roland.jolli...@gmail.com]
> The thing about home/limit switches is that you can actually mount them far
> from the engagement point, say two feet away. Use a hard, sprung rod to
> transfer the action.
> I've also come across switches that you can barely depress with your
> finger, so that any oil/gunk gets squeezed out the way before it trips.


Thanks Roland
These are temporary in the sense that I want the safety and repeatability of 
home/limit but they are not the final solution.  
Since the mill has a power feed on the RHS of the X I'm tempted to cut the 
wires for the limit switch in the middle and use it for example.  And then 
clone something like that for the other axis (or for all of them).

My DRO scales are in the way for some of this.  I still need to add oiler tubes 
etc.  This mill is similar to a Grizzly G3616 that I bought over 10 years ago 
new for about $3600Cdn.  Anything even close to that size and mass now is over 
$8K.  I really like the DRO but at some point I won't really need it and it's 
not impervious to flood coolant so there's tons of work to do on this.

Or throw money at it and replace it with a HAAS.  But then what would I do...

John




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Re: [Emc-users] .ini file questions

[Todd Zuercher]

The value "HOME_OFFSET=" is the number value given to the point where the home 
switch changes during the home_latch move.
The value "HOME=" is the position the joint will move to (relative to the 
"HOME_OFFSET=" point) at the feed rate specified by "HOME_FINAL_VEL=".

So If you're using your negative limit switch as the home switch, and specify 
HOME_OFFSET=-1 and HOME=0 after probing the switch the axis will move to 1" (or 
1mm) away from the switch with that point given the value of 0 in the g53 
machine coordinates.  If you were to set HOME_OFFSET=0 and HOME=1, the point 
the machine would stop would still be the same but that position would now be 
given the value of 1 in the machine coordinates.

Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street 
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031

-Original Message-
From: John Dammeyer  
Sent: Thursday, July 11, 2019 11:50 AM
To: 'Enhanced Machine Controller (EMC)' 
Subject: [Emc-users] .ini file questions

I'm having trouble with the definition of homing parameters.

I understand
HOME_SEARCH_VEL  Move say left until the N/C  Home/Limit switch opens.
HOME_LATCH_VEL going in the other direction to the right  back off the switch 
once it's been found. Done much slower so the Machine Axis Home position is 
repeatable.

Now it gets a bit vague.  (using inches) HOME is set to 0 by default.  If I set 
it to +0.05" for example, then it's 0.05" to the right of the physical home 
switch.  (That's a quarter turn of the lead screw handle)

That means
HOME_FINAL_VEL is then used to go to that position?  It doesn't need to be 
signed because the system knows which way to go to the HOME setting?

So ideally, since my Home/limit are one and the same I should set it a tad to 
the right so that a move to Machine Home Position doesn't trip the limit?

Or does setting HOME_OFFSET to -0.05" do the same thing?  And if I set 
HOME_OFFSET to -0.05" then after the HOME_LATCH_VEL move to see the N/C switch 
close again it continues to move 0.05" at HOME_FINAL_VEL to reach what it now 
calls 0.000"?

Have I got that right?

Thanks
John Dammeyer






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[Emc-users] First project with LinuxCNC.

[Roland Jollivet]

The thing about home/limit switches is that you can actually mount them far
from the engagement point, say two feet away. Use a hard, sprung rod to
transfer the action.
I've also come across switches that you can barely depress with your
finger, so that any oil/gunk gets squeezed out the way before it trips.


On Thu, 11 Jul 2019 at 16:17, Gene Heskett  wrote:

> On Thursday 11 July 2019 00:11:33 John Dammeyer wrote:
>
> > Well.  Not the best in the world. And lots of false starts as much due
> > to CAM management and G-Code generation.  But the limit switch holders
> > for the Y axis are done.  LinuxCNCwith one parallel port, two HP_UHU
> > Servo drives, one Gecko Knee Stepper drive.   The HB04 Pendant made
> > this a lot easier.
> >
> > Now to figure out how to mount a Knee Home Switch.
> >
> > And properly configure a tool table with the tool heights.
> >
> > John Dammeyer
>
> Those look pretty darned solid John, better than any I've done, but I am
> usually more space constained too. My new 6040 gantry's y home is a jury
> rig if there ever was one, and subject to whatever overtravel up to
> about 1/16" before the gantry crashes.  So I have the switch, a teeny
> pushbutton mounted with about 10 thou of button travel, mounted on a
> 1/16" thick 2.5" length of alu about 3/8" wide, bolted to the front face
> of the bed so the switch hangs out past the bed facing to the rear, with
> a 4-40 screw planted in the face of the gantry edge to push it. The
> boltdown screws are a long inch away from the switch, allowing the alu
> to flex about 1/8" without permanent deformation after the switch is
> bottomed. With the 4-40 screw set for the length of stickout to keep it
> from crashing, I can feel the mount flex as it homes, but cannot see it.
> I've std roller micros in other places. With 5 dollars a bag of ten
> switches, repeatability is well under a thou all around. I'm pleased,
> which is what counts. Limits are set in the .ini file, about 50 thou
> from crashing at the other end of the range.
>
> I may replace the z motor yet, all of them are very small nema 23's, and
> with the weight of the spindle motor on the z sled, lift speed is
> restricted to about 1/3 the maxvel of the x and y dirs, currently set at
> about 190"/minute.
>
> No labels on the motors, and no data on the dip switch settings of the
> tb6560 drivers I took out, so motor currents are set in the low 2's
> based on motor heating. I replaced that whole control box since I was
> unable to even get a full translation of the Chinese manual out of
> googles translator. So it now has a quad of 2m542's that used to drive
> my hf mill. and a clone 1.5 horse 120 volt vfd.  Runs either direction.
> But if I use tool contact to set tlo with a g38.2, I have to clip a
> ground onto the tool. Too much of that grey epoxy paint to get a ground
> anyplace. Even the motor to spindle doesn't reliably get thru the
> spindles bearings.
>
> Thanks John.
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
>  - Louis D. Brandeis
> Genes Web page 
>
>
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[Emc-users] .ini file questions

[John Dammeyer]

I'm having trouble with the definition of homing parameters.

I understand 
HOME_SEARCH_VEL  Move say left until the N/C  Home/Limit switch opens.
HOME_LATCH_VEL going in the other direction to the right  back off the switch 
once it's been found. Done much slower so the Machine Axis Home position is 
repeatable.

Now it gets a bit vague.  (using inches)
HOME is set to 0 by default.  If I set it to +0.05" for example, then it's 
0.05" to the right of the physical home switch.  (That's a quarter turn of the 
lead screw handle)

That means
HOME_FINAL_VEL is then used to go to that position?  It doesn't need to be 
signed because the system knows which way to go to the HOME setting?

So ideally, since my Home/limit are one and the same I should set it a tad to 
the right so that a move to Machine Home Position doesn't trip the limit?

Or does setting HOME_OFFSET to -0.05" do the same thing?  And if I set 
HOME_OFFSET to -0.05" then after the HOME_LATCH_VEL move to see the N/C switch 
close again it continues to move 0.05" at HOME_FINAL_VEL to reach what it now 
calls 0.000"?

Have I got that right?

Thanks
John Dammeyer






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Re: [Emc-users] First project with LinuxCNC.

[Gene Heskett]

On Thursday 11 July 2019 00:11:33 John Dammeyer wrote:

> Well.  Not the best in the world. And lots of false starts as much due
> to CAM management and G-Code generation.  But the limit switch holders
> for the Y axis are done.  LinuxCNCwith one parallel port, two HP_UHU
> Servo drives, one Gecko Knee Stepper drive.   The HB04 Pendant made
> this a lot easier.
>
> Now to figure out how to mount a Knee Home Switch.
>
> And properly configure a tool table with the tool heights.
>
> John Dammeyer

Those look pretty darned solid John, better than any I've done, but I am 
usually more space constained too. My new 6040 gantry's y home is a jury 
rig if there ever was one, and subject to whatever overtravel up to 
about 1/16" before the gantry crashes.  So I have the switch, a teeny 
pushbutton mounted with about 10 thou of button travel, mounted on a 
1/16" thick 2.5" length of alu about 3/8" wide, bolted to the front face 
of the bed so the switch hangs out past the bed facing to the rear, with 
a 4-40 screw planted in the face of the gantry edge to push it. The 
boltdown screws are a long inch away from the switch, allowing the alu 
to flex about 1/8" without permanent deformation after the switch is 
bottomed. With the 4-40 screw set for the length of stickout to keep it 
from crashing, I can feel the mount flex as it homes, but cannot see it.  
I've std roller micros in other places. With 5 dollars a bag of ten 
switches, repeatability is well under a thou all around. I'm pleased, 
which is what counts. Limits are set in the .ini file, about 50 thou 
from crashing at the other end of the range.

I may replace the z motor yet, all of them are very small nema 23's, and 
with the weight of the spindle motor on the z sled, lift speed is 
restricted to about 1/3 the maxvel of the x and y dirs, currently set at 
about 190"/minute.

No labels on the motors, and no data on the dip switch settings of the 
tb6560 drivers I took out, so motor currents are set in the low 2's 
based on motor heating. I replaced that whole control box since I was 
unable to even get a full translation of the Chinese manual out of 
googles translator. So it now has a quad of 2m542's that used to drive 
my hf mill. and a clone 1.5 horse 120 volt vfd.  Runs either direction.  
But if I use tool contact to set tlo with a g38.2, I have to clip a 
ground onto the tool. Too much of that grey epoxy paint to get a ground 
anyplace. Even the motor to spindle doesn't reliably get thru the 
spindles bearings.

Thanks John.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] First project with LinuxCNC.

[marcus . bowman]

John Dammeyer said:

Well. Not the best in the worldMarcus says:That rather depends on how
you define 'best'. Personally, I would say that the result certainly
is the 'best' in the sense that producing the work and proving the
machine and workflow is the optimum outcome at this stage.Deserves not
only a cup of tea, but a biscuit too.(Apologies for the format of this
message. I'm unfamiliar with the behaviour of the web email client on
this machine.)



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