Re: [Emc-users] cnc axis "Touch Off"

[R C]

ah ok,

It sounds like the coordinate systems in essence are the same,  they 
just have a different origin, for all the other parts,   it's just the 
same thing, just translated and/or rotated for another part?



Ron



On 9/10/20 8:04 PM, Jon Elson wrote:

On 09/10/2020 08:28 PM, R C wrote:
I figured out the "touch off", and that it 'works' the same as 
homing, functionally.



I wondered what all the different coordinate systems are for, their 
differnces.


(I know what a coordinat system is, mathematician here.)
This allows you to set up an offset from a main coordinate system, for 
instance if you have several identical features to be machined on a 
part, one hunk of G-code could machine each part and then set up the 
offset to machine the next instance.


It can also be used if you have several parts mounted in a fixture, 
one coord system for each part.


Jon


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Re: [Emc-users] cnc axis "Touch Off"

[Jon Elson]

On 09/10/2020 08:28 PM, R C wrote:
I figured out the "touch off", and that it 'works' the 
same as homing, functionally.



I wondered what all the different coordinate systems are 
for, their differnces.


(I know what a coordinat system is, mathematician here.)
This allows you to set up an offset from a main coordinate 
system, for instance if you have several identical features 
to be machined on a part, one hunk of G-code could machine 
each part and then set up the offset to machine the next 
instance.


It can also be used if you have several parts mounted in a 
fixture, one coord system for each part.


Jon


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Re: [Emc-users] cnc axis "Touch Off"

[R C]

I figured out the "touch off", and that it 'works' the same as homing, 
functionally.



I wondered what all the different coordinate systems are for, their 
differnces.


(I know what a coordinat system is, mathematician here.)


Ron



On 9/10/20 6:53 PM, Jon Elson wrote:

On 09/10/2020 05:59 PM, R C wrote:

I was just playing with it a bit,


I have the idea, that , like homing is done per axis, "touching Off" 
is done per axis too?
Yes, you should be able to select the axis that is to have its offset 
changed and then enter what that coordinate should be set to.  (You 
can also select the workpiece coordinate system on that dialog box.)


Jon


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Re: [Emc-users] cnc axis "Touch Off"

[Jon Elson]

On 09/10/2020 05:59 PM, R C wrote:

I was just playing with it a bit,


I have the idea, that , like homing is done per axis, 
"touching Off" is done per axis too?
Yes, you should be able to select the axis that is to have 
its offset changed and then enter what that coordinate 
should be set to.  (You can also select the workpiece 
coordinate system on that dialog box.)


Jon


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Re: [Emc-users] Q for Peter CW.

[Gene Heskett]

On Thursday 10 September 2020 19:53:16 andy pugh wrote:

> On Thu, 10 Sep 2020 at 22:46, Gene Heskett  
wrote:
> > True but subject to the time granularity of the servo-loop, and not
> > fast enough to catch the first step without thinking about addf
> > ordering.
>
> The step-gen won't make steps until it sees the new target. So running
> the step-gen servo-thread section first in the list will mean that it
> always gets a 1mS (or so) wait before the first pulse.

I'll try to remember that when I get ready to put it online.  At my 
current progress with this 3d printer, I may even be another year older 
by then. :-(

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] cnc axis "Touch Off"

[R C]

On 9/10/20 5:49 PM, Gene Heskett wrote:

On Thursday 10 September 2020 18:50:03 jrmitchellj wrote:


On a Mill setup, touch-off only affects the Z axis.  You will need to
find your X0, and Y0 positions.  I use the end key to bring up the
dialog and set the offset.

--J. Ray Mitchell Jr.
jrmitche...@gmail.com


It works for all 4 configured axis's here.


I assume you still have to do each axis separate, that's what I have to 
do it seems.






"Good enough is the enemy of excellence"author unknown

On Thu, Sep 10, 2020 at 2:51 PM R C  wrote:

Hello,


this is probably a rookie question, but sometime when I do a "Touch
Off",  the Z-position indeed becomes 0,  but the X and Y are not.
Then in teh axis program, it will still go to the "first" spot where
it needs to start milling, and in the  drawing it fllows the correct
lines/pattern,  but since the tuch off wasn't in the origin (0, 0,
0) on the actual workpiece/part the machining is off (and
consequently goes out of the material, and starts milling air at
some point.


I am wondering why that happens?   Is that a mistake I sometimes
make in Freecad, or is that something I do wrong touching off? (I am
fairly sure it is not a bug).


How can I make sure that I am actually touching off at (0, 0, 0) ?


thanks,


Ron

(sorry if I have some terminology incorrect, but you know ... rookie
here.)



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Re: [Emc-users] Q for Peter CW.

[andy pugh]

On Thu, 10 Sep 2020 at 22:46, Gene Heskett  wrote:

> True but subject to the time granularity of the servo-loop, and not fast
> enough to catch the first step without thinking about addf ordering.

The step-gen won't make steps until it sees the new target. So running
the step-gen servo-thread section first in the list will mean that it
always gets a 1mS (or so) wait before the first pulse.

-- 
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, 1912


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Re: [Emc-users] cnc axis "Touch Off"

[andy pugh]

On Thu, 10 Sep 2020 at 22:51, R C  wrote:

> this is probably a rookie question, but sometime when I do a "Touch
> Off",  the Z-position indeed becomes 0,  but the X and Y are not.   Then
> in teh axis program, it will still go to the "first" spot where it needs
> to start milling

There are two different touch-offs: Tool and Coordinate system.

On a Mill you typically only touch-off the tool in Z, but each tool
can have XYZABCUVW offsets.
Lathes will generally use Z and X offsets.

The coordinate system offset applies to all tools.

So, for a mill with a collet chuck you can choose to touch-off the
tool every time, or the coordinate system every time, or some
combination. But we warned that unless you are disciplined and know
what you want to achieve, using both can get confusing. With a machine
that has a "proper" toolholding system then you would touch-off each
tool into the tool table, then you can touch-off the coordinate system
with any tool and the coordinate system will be correct for all tools.

Axis only touches-off one axis at a time. You need to choose the axis
with the radio buttons before pressing the touch-off button.

Touchy allows you to touch off every coordinate system or tool axis at
the same time.

I don't know what the other UIs do without testing them as I have
little experience with them.

-- 
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, 1912


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Re: [Emc-users] cnc axis "Touch Off"

[Gene Heskett]

On Thursday 10 September 2020 18:59:09 R C wrote:

> I was just playing with it a bit,
>
>
> I have the idea, that , like homing is done per axis, "touching Off"
> is done per axis too?
>
yes, and has forever here.
>
> thanks,
>
>
> Ron
>
> On 9/10/20 4:50 PM, jrmitchellj wrote:
> > On a Mill setup, touch-off only affects the Z axis.  You will need
> > to find your X0, and Y0 positions.  I use the end key to bring up
> > the dialog and set the offset.
> >
> > --J. Ray Mitchell Jr.
> > jrmitche...@gmail.com
> >
> >
> >
> > "Good enough is the enemy of excellence"author unknown
> >
> > On Thu, Sep 10, 2020 at 2:51 PM R C  wrote:
> >> Hello,
> >>
> >>
> >> this is probably a rookie question, but sometime when I do a "Touch
> >> Off",  the Z-position indeed becomes 0,  but the X and Y are not.  
> >> Then in teh axis program, it will still go to the "first" spot
> >> where it needs to start milling, and in the  drawing it fllows the
> >> correct lines/pattern,  but since the tuch off wasn't in the origin
> >> (0, 0, 0) on the actual workpiece/part the machining is off (and
> >> consequently goes out of the material, and starts milling air at
> >> some point.
> >>
> >>
> >> I am wondering why that happens?   Is that a mistake I sometimes
> >> make in Freecad, or is that something I do wrong touching off? (I
> >> am fairly sure it is not a bug).
> >>
> >>
> >> How can I make sure that I am actually touching off at (0, 0, 0) ?
> >>
> >>
> >> thanks,
> >>
> >>
> >> Ron
> >>
> >> (sorry if I have some terminology incorrect, but you know ...
> >> rookie here.)
> >>
> >>
> >>
> >> ___
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> >
> > ___
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>
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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] cnc axis "Touch Off"

[Gene Heskett]

On Thursday 10 September 2020 18:50:03 jrmitchellj wrote:

> On a Mill setup, touch-off only affects the Z axis.  You will need to
> find your X0, and Y0 positions.  I use the end key to bring up the
> dialog and set the offset.
>
> --J. Ray Mitchell Jr.
> jrmitche...@gmail.com
>
It works for all 4 configured axis's here.
>
>
> "Good enough is the enemy of excellence"author unknown
>
> On Thu, Sep 10, 2020 at 2:51 PM R C  wrote:
> > Hello,
> >
> >
> > this is probably a rookie question, but sometime when I do a "Touch
> > Off",  the Z-position indeed becomes 0,  but the X and Y are not.  
> > Then in teh axis program, it will still go to the "first" spot where
> > it needs to start milling, and in the  drawing it fllows the correct
> > lines/pattern,  but since the tuch off wasn't in the origin (0, 0,
> > 0) on the actual workpiece/part the machining is off (and
> > consequently goes out of the material, and starts milling air at
> > some point.
> >
> >
> > I am wondering why that happens?   Is that a mistake I sometimes
> > make in Freecad, or is that something I do wrong touching off? (I am
> > fairly sure it is not a bug).
> >
> >
> > How can I make sure that I am actually touching off at (0, 0, 0) ?
> >
> >
> > thanks,
> >
> >
> > Ron
> >
> > (sorry if I have some terminology incorrect, but you know ... rookie
> > here.)
> >
> >
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
> ___
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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] Mini-PC

[Gene Heskett]

On Thursday 10 September 2020 18:32:41 Eric Keller wrote:

> Gene, do you have pictures of your sheldon?
>
Yes, I've posted some to the list so they s/b in the archive. Yell if you 
can't find them.

There has been a couple changes since, the rpi3 is now an rpi4, and a 
honking big z-motor that was a 1600oz/in nema 34, is now a 3NM nema 23, 
one of the new 3 phase stepper servo's.  It has an error output, which 
if triggered, e-stops the whole thing and unhomes it.  And just today I 
got 2 more of those motor/driver combo's but in the shorter 2NM size 
which can fit on the back of the apron plate so I can put one of them on 
the X drive.  But not instantly as I need to either ream that motor 
pulley out to 8mm or order one, as that one is 1/4".  And I'm up to my 
grin trying to get someone interested in replaceing a 30 yo window that 
fell from broken plastic parts about 2AM 10 days back.  And I'm getting 
too darned old to handle that project alone.

> On Thu, Sep 10, 2020 at 5:30 PM Gene Heskett  
wrote:
> > On Thursday 10 September 2020 13:53:53 Scott Harwell via Emc-users 
wrote:
> > >  I'm testing on the HP8300  $115 with keyboard and mouse from
> > > Newegg. It looks good but I have two problems (probably me). No
> > > root password and power management time out.
> > >
> > > Scott
> > >
> > >
> > > On Thursday, September 10, 2020, 11:02:19 AM CDT, Sam Sokolik
> > >  wrote:
> > >
> > >  I just downloaded the buster 2.8 iso and tested it on an 8200
> > > (8300 usually runs just slightly better in my experience)
> > >
> > > This was overnight with glxgears running.

But I didn't see a performance report.

> > > On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne
> > > 
> > >
> > > wrote:
> > > > On 9/8/20 12:48 PM, Dave Matthews wrote:
> > > > > A few weeks ago someone mentioned the HP 8300 SFF as having
> > > > > very good jitter numbers.  Those are an i5 that takes a $5
> > > > > cable to add the parallel port.  Usually about $150 US on
> > > > > Amazon.
> > > > >
> > > > > $155 today -
> > > >
> > > > https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV
> > > >9G1B
> > > > O/ref=sr_1_1?dchild=1=hp+8300+sff=1599583671=8-1
> > > >
> > > > That's the Amazon price with Win10.  It's $81 on eBay, maybe
> > > > less for one without Windows.  Search for item number
> > > > 184439631747, or more generically, search for "HP 8300 i5
> > > > -usdt".
> > > >
> > > > I can't vouch for how well it runs LinuxCNC, but the i7 version
> > > > (eBay, off lease) has been my Linux desktop PC for the past few
> > > > years and it's on 24/7.  It's been 100% reliable and with a
> > > > solid state drive and Linux, it runs like a scalded dog.  I run
> > > > FreeCAD and it'll spin a complex model, generating shaded images
> > > > at more than twice the frame rate needed for smooth persistence
> > > > of vision video.  There's definitely something to be said for a
> > > > reliable PC to use for LinuxCNC in the shop.
> > > >
> > > > In hind sight, I probably should have gotten good used PCs that
> > > > run LinuxCNC instead of buying a bunch of Intel motherboards so
> > > > I could have standard controllers for all of my LinuxCNC
> > > > projects.  However, I was very stoked to see that LinuxCNC 2.8.0
> > > > can be installed on a Raspberry Pi 4.  That's very cool, and
> > > > would be ideal for tiny machines like a little desktop CNC
> > > > router or a Sherline mini lathe.
> >
> > Why limit it to toy's? I am running a 75 yo 11x56 Sheldon lathe with
> > an rpi4, make it do things it never dreamed of doing originally with
> > a compound and taper attachment, but without either, and much faster
> > than original after the gcode is written. No between cuts pauses to
> > check your next cut. :)
> >
> > 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 
> >

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] cnc axis "Touch Off"

[R C]

yup,  that's why I noticed too.  I thought "touch off" would be more 
like "this is (0, 0, 0)"  and just hit that button once...


I guess I got lucky a few times.



On 9/10/20 5:28 PM, Dave Matthews wrote:

That is how I do it.  There are three radio buttons, one for each axis.  It
defaults to the last axis moved which is usually z.

Dave

On Thu, Sep 10, 2020, 19:01 R C  wrote:


I was just playing with it a bit,


I have the idea, that , like homing is done per axis, "touching Off" is
done per axis too?



thanks,


Ron





On 9/10/20 4:50 PM, jrmitchellj wrote:

On a Mill setup, touch-off only affects the Z axis.  You will need to

find

your X0, and Y0 positions.  I use the end key to bring up the dialog and
set the offset.

--J. Ray Mitchell Jr.
jrmitche...@gmail.com



"Good enough is the enemy of excellence"author unknown


On Thu, Sep 10, 2020 at 2:51 PM R C  wrote:


Hello,


this is probably a rookie question, but sometime when I do a "Touch
Off",  the Z-position indeed becomes 0,  but the X and Y are not.   Then
in teh axis program, it will still go to the "first" spot where it needs
to start milling, and in the  drawing it fllows the correct
lines/pattern,  but since the tuch off wasn't in the origin (0, 0, 0) on
the actual workpiece/part the machining is off (and consequently goes
out of the material, and starts milling air at some point.


I am wondering why that happens?   Is that a mistake I sometimes make in
Freecad, or is that something I do wrong touching off? (I am fairly sure
it is not a bug).


How can I make sure that I am actually touching off at (0, 0, 0) ?


thanks,


Ron

(sorry if I have some terminology incorrect, but you know ... rookie

here.)



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Re: [Emc-users] cnc axis "Touch Off"

[Dave Matthews]

That is how I do it.  There are three radio buttons, one for each axis.  It
defaults to the last axis moved which is usually z.

Dave

On Thu, Sep 10, 2020, 19:01 R C  wrote:

> I was just playing with it a bit,
>
>
> I have the idea, that , like homing is done per axis, "touching Off" is
> done per axis too?
>
>
>
> thanks,
>
>
> Ron
>
>
>
>
>
> On 9/10/20 4:50 PM, jrmitchellj wrote:
> > On a Mill setup, touch-off only affects the Z axis.  You will need to
> find
> > your X0, and Y0 positions.  I use the end key to bring up the dialog and
> > set the offset.
> >
> > --J. Ray Mitchell Jr.
> > jrmitche...@gmail.com
> >
> >
> >
> > "Good enough is the enemy of excellence"author unknown
> >
> >
> > On Thu, Sep 10, 2020 at 2:51 PM R C  wrote:
> >
> >> Hello,
> >>
> >>
> >> this is probably a rookie question, but sometime when I do a "Touch
> >> Off",  the Z-position indeed becomes 0,  but the X and Y are not.   Then
> >> in teh axis program, it will still go to the "first" spot where it needs
> >> to start milling, and in the  drawing it fllows the correct
> >> lines/pattern,  but since the tuch off wasn't in the origin (0, 0, 0) on
> >> the actual workpiece/part the machining is off (and consequently goes
> >> out of the material, and starts milling air at some point.
> >>
> >>
> >> I am wondering why that happens?   Is that a mistake I sometimes make in
> >> Freecad, or is that something I do wrong touching off? (I am fairly sure
> >> it is not a bug).
> >>
> >>
> >> How can I make sure that I am actually touching off at (0, 0, 0) ?
> >>
> >>
> >> thanks,
> >>
> >>
> >> Ron
> >>
> >> (sorry if I have some terminology incorrect, but you know ... rookie
> here.)
> >>
> >>
> >>
> >> ___
> >> Emc-users mailing list
> >> Emc-users@lists.sourceforge.net
> >> https://lists.sourceforge.net/lists/listinfo/emc-users
> >>
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>
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Re: [Emc-users] cnc axis "Touch Off"

[R C]

I was just playing with it a bit,


I have the idea, that , like homing is done per axis, "touching Off" is 
done per axis too?




thanks,


Ron





On 9/10/20 4:50 PM, jrmitchellj wrote:

On a Mill setup, touch-off only affects the Z axis.  You will need to find
your X0, and Y0 positions.  I use the end key to bring up the dialog and
set the offset.

--J. Ray Mitchell Jr.
jrmitche...@gmail.com



"Good enough is the enemy of excellence"author unknown


On Thu, Sep 10, 2020 at 2:51 PM R C  wrote:


Hello,


this is probably a rookie question, but sometime when I do a "Touch
Off",  the Z-position indeed becomes 0,  but the X and Y are not.   Then
in teh axis program, it will still go to the "first" spot where it needs
to start milling, and in the  drawing it fllows the correct
lines/pattern,  but since the tuch off wasn't in the origin (0, 0, 0) on
the actual workpiece/part the machining is off (and consequently goes
out of the material, and starts milling air at some point.


I am wondering why that happens?   Is that a mistake I sometimes make in
Freecad, or is that something I do wrong touching off? (I am fairly sure
it is not a bug).


How can I make sure that I am actually touching off at (0, 0, 0) ?


thanks,


Ron

(sorry if I have some terminology incorrect, but you know ... rookie here.)



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Re: [Emc-users] cnc axis "Touch Off"

[jrmitchellj]

On a Mill setup, touch-off only affects the Z axis.  You will need to find
your X0, and Y0 positions.  I use the end key to bring up the dialog and
set the offset.

--J. Ray Mitchell Jr.
jrmitche...@gmail.com



"Good enough is the enemy of excellence"author unknown


On Thu, Sep 10, 2020 at 2:51 PM R C  wrote:

> Hello,
>
>
> this is probably a rookie question, but sometime when I do a "Touch
> Off",  the Z-position indeed becomes 0,  but the X and Y are not.   Then
> in teh axis program, it will still go to the "first" spot where it needs
> to start milling, and in the  drawing it fllows the correct
> lines/pattern,  but since the tuch off wasn't in the origin (0, 0, 0) on
> the actual workpiece/part the machining is off (and consequently goes
> out of the material, and starts milling air at some point.
>
>
> I am wondering why that happens?   Is that a mistake I sometimes make in
> Freecad, or is that something I do wrong touching off? (I am fairly sure
> it is not a bug).
>
>
> How can I make sure that I am actually touching off at (0, 0, 0) ?
>
>
> thanks,
>
>
> Ron
>
> (sorry if I have some terminology incorrect, but you know ... rookie here.)
>
>
>
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Re: [Emc-users] Mini-PC

[Eric Keller]

Gene, do you have pictures of your sheldon?

On Thu, Sep 10, 2020 at 5:30 PM Gene Heskett  wrote:

> On Thursday 10 September 2020 13:53:53 Scott Harwell via Emc-users wrote:
>
> >  I'm testing on the HP8300  $115 with keyboard and mouse from Newegg.
> > It looks good but I have two problems (probably me). No root password
> > and power management time out.
> >
> > Scott
> >
> >
> > On Thursday, September 10, 2020, 11:02:19 AM CDT, Sam Sokolik
> >  wrote:
> >
> >  I just downloaded the buster 2.8 iso and tested it on an 8200 (8300
> > usually runs just slightly better in my experience)
> >
> > This was overnight with glxgears running.
> >
> >
> >
> > On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne
> > 
> >
> > wrote:
> > > On 9/8/20 12:48 PM, Dave Matthews wrote:
> > > > A few weeks ago someone mentioned the HP 8300 SFF as having very
> > > > good jitter numbers.  Those are an i5 that takes a $5 cable to add
> > > > the parallel port.  Usually about $150 US on Amazon.
> > > >
> > > > $155 today -
> > >
> > > https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1B
> > >O/ref=sr_1_1?dchild=1=hp+8300+sff=1599583671=8-1
> > >
> > > That's the Amazon price with Win10.  It's $81 on eBay, maybe less
> > > for one without Windows.  Search for item number 184439631747, or
> > > more generically, search for "HP 8300 i5 -usdt".
> > >
> > > I can't vouch for how well it runs LinuxCNC, but the i7 version
> > > (eBay, off lease) has been my Linux desktop PC for the past few
> > > years and it's on 24/7.  It's been 100% reliable and with a solid
> > > state drive and Linux, it runs like a scalded dog.  I run FreeCAD
> > > and it'll spin a complex model, generating shaded images at more
> > > than twice the frame rate needed for smooth persistence of vision
> > > video.  There's definitely something to be said for a reliable PC to
> > > use for LinuxCNC in the shop.
> > >
> > > In hind sight, I probably should have gotten good used PCs that run
> > > LinuxCNC instead of buying a bunch of Intel motherboards so I could
> > > have standard controllers for all of my LinuxCNC projects.  However,
> > > I was very stoked to see that LinuxCNC 2.8.0 can be installed on a
> > > Raspberry Pi 4.  That's very cool, and would be ideal for tiny
> > > machines like a little desktop CNC router or a Sherline mini lathe.
> > >
> Why limit it to toy's? I am running a 75 yo 11x56 Sheldon lathe with an
> rpi4, make it do things it never dreamed of doing originally with a
> compound and taper attachment, but without either, and much faster than
> original after the gcode is written. No between cuts pauses to check
> your next cut. :)
>
> 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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>

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Re: [Emc-users] Q for Peter CW.

[Sam Sokolik]

I think peters solution would work just fine.  You have acceleration time.
It isn't like the stepper is going to be instantly moving at to speed.

The leadshine seems to have this built in.  After it doesn't see any steps
it lowers power.  Once it sees steps - it raises it back up.  Unknown to
linuxcnc.

On Thu, Sep 10, 2020, 4:46 PM Gene Heskett  wrote:

> On Thursday 10 September 2020 15:07:51 Peter C. Wallace wrote:
>
> > On Thu, 10 Sep 2020, Gene Heskett wrote:
> > > Date: Thu, 10 Sep 2020 13:53:24 -0400
> > > From: Gene Heskett 
> > > Reply-To: "Enhanced Machine Controller (EMC)"
> > > 
> > > To: "Enhanced Machine Controller (EMC)"
> > >  Subject: [Emc-users] Q for Peter
> > > CW.
> > >
> > > Greetings Peter;
> > >
> > > How hard would it be to convert the joint.#.free-tp-enable into
> > > move-is-in-progress signal?
> >
> > I think I would just use the "near" component on the commanded joint
> > velocity so when the commanded joint velocity is very "near" 0, the
> > current is lowered
> >
> True but subject to the time granularity of the servo-loop, and not fast
> enough to catch the first step without thinking about addf ordering.
> I'd like to home it, and not worry about losing steps.
>
> hal snippets welcome.
>
> Thanks Peter.
> >
> > Peter Wallace
> > Mesa Electronics
> >
> > (\__/)
> > (='.'=) This is Bunny. Copy and paste bunny into your
> > (")_(") signature to help him gain world domination.
> >
> >
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
> 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] cnc axis "Touch Off"

[R C]

Hello,


this is probably a rookie question, but sometime when I do a "Touch 
Off",  the Z-position indeed becomes 0,  but the X and Y are not.   Then 
in teh axis program, it will still go to the "first" spot where it needs 
to start milling, and in the  drawing it fllows the correct 
lines/pattern,  but since the tuch off wasn't in the origin (0, 0, 0) on 
the actual workpiece/part the machining is off (and consequently goes 
out of the material, and starts milling air at some point.



I am wondering why that happens?   Is that a mistake I sometimes make in 
Freecad, or is that something I do wrong touching off? (I am fairly sure 
it is not a bug).



How can I make sure that I am actually touching off at (0, 0, 0) ?


thanks,


Ron

(sorry if I have some terminology incorrect, but you know ... rookie here.)



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Re: [Emc-users] Mini-PC

[Sam Sokolik]

And this does things that the engineers at K could only dream of...
Like arc radius bigger than 9."  ;)





On Thu, Sep 10, 2020 at 4:30 PM Gene Heskett  wrote:

> On Thursday 10 September 2020 13:53:53 Scott Harwell via Emc-users wrote:
>
> >  I'm testing on the HP8300  $115 with keyboard and mouse from Newegg.
> > It looks good but I have two problems (probably me). No root password
> > and power management time out.
> >
> > Scott
> >
> >
> > On Thursday, September 10, 2020, 11:02:19 AM CDT, Sam Sokolik
> >  wrote:
> >
> >  I just downloaded the buster 2.8 iso and tested it on an 8200 (8300
> > usually runs just slightly better in my experience)
> >
> > This was overnight with glxgears running.
> >
> >
> >
> > On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne
> > 
> >
> > wrote:
> > > On 9/8/20 12:48 PM, Dave Matthews wrote:
> > > > A few weeks ago someone mentioned the HP 8300 SFF as having very
> > > > good jitter numbers.  Those are an i5 that takes a $5 cable to add
> > > > the parallel port.  Usually about $150 US on Amazon.
> > > >
> > > > $155 today -
> > >
> > > https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1B
> > >O/ref=sr_1_1?dchild=1=hp+8300+sff=1599583671=8-1
> > >
> > > That's the Amazon price with Win10.  It's $81 on eBay, maybe less
> > > for one without Windows.  Search for item number 184439631747, or
> > > more generically, search for "HP 8300 i5 -usdt".
> > >
> > > I can't vouch for how well it runs LinuxCNC, but the i7 version
> > > (eBay, off lease) has been my Linux desktop PC for the past few
> > > years and it's on 24/7.  It's been 100% reliable and with a solid
> > > state drive and Linux, it runs like a scalded dog.  I run FreeCAD
> > > and it'll spin a complex model, generating shaded images at more
> > > than twice the frame rate needed for smooth persistence of vision
> > > video.  There's definitely something to be said for a reliable PC to
> > > use for LinuxCNC in the shop.
> > >
> > > In hind sight, I probably should have gotten good used PCs that run
> > > LinuxCNC instead of buying a bunch of Intel motherboards so I could
> > > have standard controllers for all of my LinuxCNC projects.  However,
> > > I was very stoked to see that LinuxCNC 2.8.0 can be installed on a
> > > Raspberry Pi 4.  That's very cool, and would be ideal for tiny
> > > machines like a little desktop CNC router or a Sherline mini lathe.
> > >
> Why limit it to toy's? I am running a 75 yo 11x56 Sheldon lathe with an
> rpi4, make it do things it never dreamed of doing originally with a
> compound and taper attachment, but without either, and much faster than
> original after the gcode is written. No between cuts pauses to check
> your next cut. :)
>
> 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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>

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Re: [Emc-users] Q for Peter CW.

[Gene Heskett]

On Thursday 10 September 2020 15:07:51 Peter C. Wallace wrote:

> On Thu, 10 Sep 2020, Gene Heskett wrote:
> > Date: Thu, 10 Sep 2020 13:53:24 -0400
> > From: Gene Heskett 
> > Reply-To: "Enhanced Machine Controller (EMC)"
> > 
> > To: "Enhanced Machine Controller (EMC)"
> >  Subject: [Emc-users] Q for Peter
> > CW.
> >
> > Greetings Peter;
> >
> > How hard would it be to convert the joint.#.free-tp-enable into
> > move-is-in-progress signal?
>
> I think I would just use the "near" component on the commanded joint
> velocity so when the commanded joint velocity is very "near" 0, the
> current is lowered
>
True but subject to the time granularity of the servo-loop, and not fast 
enough to catch the first step without thinking about addf ordering.  
I'd like to home it, and not worry about losing steps.

hal snippets welcome.

Thanks Peter.
>
> Peter Wallace
> Mesa Electronics
>
> (\__/)
> (='.'=) This is Bunny. Copy and paste bunny into your
> (")_(") signature to help him gain world domination.
>
>
>
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users


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] Mini-PC

[Gene Heskett]

On Thursday 10 September 2020 13:53:53 Scott Harwell via Emc-users wrote:

>  I'm testing on the HP8300  $115 with keyboard and mouse from Newegg.
> It looks good but I have two problems (probably me). No root password
> and power management time out.
>
> Scott
>
>
> On Thursday, September 10, 2020, 11:02:19 AM CDT, Sam Sokolik
>  wrote:
>
>  I just downloaded the buster 2.8 iso and tested it on an 8200 (8300
> usually runs just slightly better in my experience)
>
> This was overnight with glxgears running.
>
>
>
> On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne
> 
>
> wrote:
> > On 9/8/20 12:48 PM, Dave Matthews wrote:
> > > A few weeks ago someone mentioned the HP 8300 SFF as having very
> > > good jitter numbers.  Those are an i5 that takes a $5 cable to add
> > > the parallel port.  Usually about $150 US on Amazon.
> > >
> > > $155 today -
> >
> > https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1B
> >O/ref=sr_1_1?dchild=1=hp+8300+sff=1599583671=8-1
> >
> > That's the Amazon price with Win10.  It's $81 on eBay, maybe less
> > for one without Windows.  Search for item number 184439631747, or
> > more generically, search for "HP 8300 i5 -usdt".
> >
> > I can't vouch for how well it runs LinuxCNC, but the i7 version
> > (eBay, off lease) has been my Linux desktop PC for the past few
> > years and it's on 24/7.  It's been 100% reliable and with a solid
> > state drive and Linux, it runs like a scalded dog.  I run FreeCAD
> > and it'll spin a complex model, generating shaded images at more
> > than twice the frame rate needed for smooth persistence of vision
> > video.  There's definitely something to be said for a reliable PC to
> > use for LinuxCNC in the shop.
> >
> > In hind sight, I probably should have gotten good used PCs that run
> > LinuxCNC instead of buying a bunch of Intel motherboards so I could
> > have standard controllers for all of my LinuxCNC projects.  However,
> > I was very stoked to see that LinuxCNC 2.8.0 can be installed on a
> > Raspberry Pi 4.  That's very cool, and would be ideal for tiny
> > machines like a little desktop CNC router or a Sherline mini lathe.
> >
Why limit it to toy's? I am running a 75 yo 11x56 Sheldon lathe with an 
rpi4, make it do things it never dreamed of doing originally with a 
compound and taper attachment, but without either, and much faster than 
original after the gcode is written. No between cuts pauses to check 
your next cut. :)

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] Q for Peter CW.

[Peter C. Wallace]

On Thu, 10 Sep 2020, Gene Heskett wrote:


Date: Thu, 10 Sep 2020 13:53:24 -0400
From: Gene Heskett 
Reply-To: "Enhanced Machine Controller (EMC)"

To: "Enhanced Machine Controller (EMC)" 
Subject: [Emc-users] Q for Peter CW.

Greetings Peter;

How hard would it be to convert the joint.#.free-tp-enable into
move-is-in-progress signal?



I think I would just use the "near" component on the commanded joint velocity
so when the commanded joint velocity is very "near" 0, the current is lowered


Peter Wallace
Mesa Electronics

(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.



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Re: [Emc-users] Mini-PC

[andy pugh]

On Thu, 10 Sep 2020 at 18:56, Scott Harwell via Emc-users
 wrote:
>
>  I'm testing on the HP8300  $115 with keyboard and mouse from Newegg. It 
> looks good but I have two problems (probably me). No root password and power 
> management time out.

The no-root-password is deliberate as, if a root password is given,
the Debian installer disables "sudo" for all users.

You shouldn't need the root account (use sudo) but if you do then you
can enable it with 'sudo passwd root'

-- 
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, 1912


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Re: [Emc-users] Mini-PC

[Scott Harwell via Emc-users]

 MY mistake it is HP Elitedesk 800 G1 SFF i5-4570 3.2GHz 8GB RAM 500GB HDD 
Refurbished
 

| 
| 
| 
|  |  |

 |

 |
| 
|  | 
HP Elitedesk 800 G1 SFF i5-4570 3.2GHz 8GB RAM 500GB HDD Windows 10 Home...

Buy HP Elitedesk 800 G1 SFF i5-4570 3.2GHz 8GB RAM 500GB HDD Windows 10 Home 
with fast shipping and top-rated cu...
 |

 |

 |



Scott



On Thursday, September 10, 2020, 12:56:29 PM CDT, Scott Harwell via 
Emc-users  wrote:  
 
  I'm testing on the HP8300  $115 with keyboard and mouse from Newegg. It looks 
good but I have two problems (probably me). No root password and power 
management time out. 

Scott


    On Thursday, September 10, 2020, 11:02:19 AM CDT, Sam Sokolik 
 wrote:  
 
 I just downloaded the buster 2.8 iso and tested it on an 8200 (8300 usually
runs just slightly better in my experience)

This was overnight with glxgears running.



On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne 
wrote:

>
>
> On 9/8/20 12:48 PM, Dave Matthews wrote:
> > A few weeks ago someone mentioned the HP 8300 SFF as having very good
> > jitter numbers.  Those are an i5 that takes a $5 cable to add the
> > parallel port.  Usually about $150 US on Amazon.
> >
> > $155 today -
> https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1BO/ref=sr_1_1?dchild=1=hp+8300+sff=1599583671=8-1
>
> That's the Amazon price with Win10.  It's $81 on eBay, maybe less for
> one without Windows.  Search for item number 184439631747, or more
> generically, search for "HP 8300 i5 -usdt".
>
> I can't vouch for how well it runs LinuxCNC, but the i7 version (eBay,
> off lease) has been my Linux desktop PC for the past few years and it's
> on 24/7.  It's been 100% reliable and with a solid state drive and
> Linux, it runs like a scalded dog.  I run FreeCAD and it'll spin a
> complex model, generating shaded images at more than twice the frame
> rate needed for smooth persistence of vision video.  There's definitely
> something to be said for a reliable PC to use for LinuxCNC in the shop.
>
> In hind sight, I probably should have gotten good used PCs that run
> LinuxCNC instead of buying a bunch of Intel motherboards so I could have
> standard controllers for all of my LinuxCNC projects.  However, I was
> very stoked to see that LinuxCNC 2.8.0 can be installed on a Raspberry
> Pi 4.  That's very cool, and would be ideal for tiny machines like a
> little desktop CNC router or a Sherline mini lathe.
>
>
>
>
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Re: [Emc-users] Mini-PC

[Scott Harwell via Emc-users]

 I'm testing on the HP8300  $115 with keyboard and mouse from Newegg. It looks 
good but I have two problems (probably me). No root password and power 
management time out. 

Scott


On Thursday, September 10, 2020, 11:02:19 AM CDT, Sam Sokolik 
 wrote:  
 
 I just downloaded the buster 2.8 iso and tested it on an 8200 (8300 usually
runs just slightly better in my experience)

This was overnight with glxgears running.



On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne 
wrote:

>
>
> On 9/8/20 12:48 PM, Dave Matthews wrote:
> > A few weeks ago someone mentioned the HP 8300 SFF as having very good
> > jitter numbers.  Those are an i5 that takes a $5 cable to add the
> > parallel port.  Usually about $150 US on Amazon.
> >
> > $155 today -
> https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1BO/ref=sr_1_1?dchild=1=hp+8300+sff=1599583671=8-1
>
> That's the Amazon price with Win10.  It's $81 on eBay, maybe less for
> one without Windows.  Search for item number 184439631747, or more
> generically, search for "HP 8300 i5 -usdt".
>
> I can't vouch for how well it runs LinuxCNC, but the i7 version (eBay,
> off lease) has been my Linux desktop PC for the past few years and it's
> on 24/7.  It's been 100% reliable and with a solid state drive and
> Linux, it runs like a scalded dog.  I run FreeCAD and it'll spin a
> complex model, generating shaded images at more than twice the frame
> rate needed for smooth persistence of vision video.  There's definitely
> something to be said for a reliable PC to use for LinuxCNC in the shop.
>
> In hind sight, I probably should have gotten good used PCs that run
> LinuxCNC instead of buying a bunch of Intel motherboards so I could have
> standard controllers for all of my LinuxCNC projects.  However, I was
> very stoked to see that LinuxCNC 2.8.0 can be installed on a Raspberry
> Pi 4.  That's very cool, and would be ideal for tiny machines like a
> little desktop CNC router or a Sherline mini lathe.
>
>
>
>
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> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>

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[Emc-users] Q for Peter CW.

[Gene Heskett]

Greetings Peter;

How hard would it be to convert the joint.#.free-tp-enable into 
move-is-in-progress signal?

Prowling around with a hal-meter, I found this signal is true for the 
duration of a keyboard jog, but doesn't react during an gcode move from 
the mdi command line, or a keyboard jog after the mdi move.  So its only 
a valid signal from lcnc launch to the first non-keyboard move.  It 
isn't active while the machine is homeing that axis. And is no longer 
active for a keyboard jog after homeing.

What I need is a logic signal from a joint, to use as a full power enable 
in a dumb stepper driver. The Toshiba TB6560AHQ/AFG has a 4 step power 
level adjustable by 2 of a 7 position dip switch, and the response is 
instant, so an "I'm moveing" signal could be used to switch it from 20% 
holding power up to full power for the duration of the move, with an 
instant back to 20% at the end of the jog. Both the enable and reset 
signals muck with the counters and would destroy the lcnc derived "home" 
validity since they both re-enable to known positions according to the 
data sheet.

I have 4 of the TB6560 based drivers, boards are marked "TX14207",and 
could easily remove the dip switch to put those 2 logic inputs under 
external controls, in this case one or more of a box of 92oz/in nema 17 
motors. Unforch, at full power, they get hot enough to destroy any PLA 
plastic in contact with them from cold flow, like these harmonic drives 
are 3d printed from. At 20% the heating is only a few degrees for 
overnight running at lower speeds.

I don't have a machine that uses that signal for anything. So converting 
it to an "I'm moving" signal, a much more usable signal seems desirable 
as it would make a bunch of sub $10 drives a lot more usable.

Can this be done?

Thank you Peter.

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] Mini-PC

[Leonardo Marsaglia]

Just to inform you guys, as Sam did.

I tried it yesterday on a MSI A68HM-E33 V2 motherboard with an AMD A6 7480
processor, with onboard video support. I got 80 usecs of jitter on the
servo thread with 3 instances of glxgears running almost an hour
approximately. LinuxCNC runs well with the sim configs. I only need to try
it with the MESA 7i80HD board that I'm going to purchase in a few days.

The only thing I had to do was to set the grub to nomodeset because if not
I had troubles with the video (black screen). I saw this was a common error
with this new Debian version so nothing to worry about nor LCNC related.

El jue., 10 sept. 2020 a las 13:02, Sam Sokolik ()
escribió:

> I just downloaded the buster 2.8 iso and tested it on an 8200 (8300 usually
> runs just slightly better in my experience)
>
> This was overnight with glxgears running.
>
>
>
> On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne 
> wrote:
>
> >
> >
> > On 9/8/20 12:48 PM, Dave Matthews wrote:
> > > A few weeks ago someone mentioned the HP 8300 SFF as having very good
> > > jitter numbers.  Those are an i5 that takes a $5 cable to add the
> > > parallel port.  Usually about $150 US on Amazon.
> > >
> > > $155 today -
> >
> https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1BO/ref=sr_1_1?dchild=1=hp+8300+sff=1599583671=8-1
> >
> > That's the Amazon price with Win10.  It's $81 on eBay, maybe less for
> > one without Windows.  Search for item number 184439631747, or more
> > generically, search for "HP 8300 i5 -usdt".
> >
> > I can't vouch for how well it runs LinuxCNC, but the i7 version (eBay,
> > off lease) has been my Linux desktop PC for the past few years and it's
> > on 24/7.  It's been 100% reliable and with a solid state drive and
> > Linux, it runs like a scalded dog.  I run FreeCAD and it'll spin a
> > complex model, generating shaded images at more than twice the frame
> > rate needed for smooth persistence of vision video.  There's definitely
> > something to be said for a reliable PC to use for LinuxCNC in the shop.
> >
> > In hind sight, I probably should have gotten good used PCs that run
> > LinuxCNC instead of buying a bunch of Intel motherboards so I could have
> > standard controllers for all of my LinuxCNC projects.  However, I was
> > very stoked to see that LinuxCNC 2.8.0 can be installed on a Raspberry
> > Pi 4.  That's very cool, and would be ideal for tiny machines like a
> > little desktop CNC router or a Sherline mini lathe.
> >
> >
> >
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
>
> ___
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Re: [Emc-users] Mini-PC

[Sam Sokolik]

I just downloaded the buster 2.8 iso and tested it on an 8200 (8300 usually
runs just slightly better in my experience)

This was overnight with glxgears running.



On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne 
wrote:

>
>
> On 9/8/20 12:48 PM, Dave Matthews wrote:
> > A few weeks ago someone mentioned the HP 8300 SFF as having very good
> > jitter numbers.  Those are an i5 that takes a $5 cable to add the
> > parallel port.  Usually about $150 US on Amazon.
> >
> > $155 today -
> https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1BO/ref=sr_1_1?dchild=1=hp+8300+sff=1599583671=8-1
>
> That's the Amazon price with Win10.  It's $81 on eBay, maybe less for
> one without Windows.  Search for item number 184439631747, or more
> generically, search for "HP 8300 i5 -usdt".
>
> I can't vouch for how well it runs LinuxCNC, but the i7 version (eBay,
> off lease) has been my Linux desktop PC for the past few years and it's
> on 24/7.  It's been 100% reliable and with a solid state drive and
> Linux, it runs like a scalded dog.  I run FreeCAD and it'll spin a
> complex model, generating shaded images at more than twice the frame
> rate needed for smooth persistence of vision video.  There's definitely
> something to be said for a reliable PC to use for LinuxCNC in the shop.
>
> In hind sight, I probably should have gotten good used PCs that run
> LinuxCNC instead of buying a bunch of Intel motherboards so I could have
> standard controllers for all of my LinuxCNC projects.  However, I was
> very stoked to see that LinuxCNC 2.8.0 can be installed on a Raspberry
> Pi 4.  That's very cool, and would be ideal for tiny machines like a
> little desktop CNC router or a Sherline mini lathe.
>
>
>
>
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>

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Re: [Emc-users] LinuxCNC 2.8.0 is released

[Alan Condit]

Andy,
Thanks for all the hard work on the release of LinuxCNC 2.8.0. It seemed at 
times that it was never going to happen. So many other changes intervening: EOL 
for Wheezy, introduction of new linux versions, almost cessation of work on 
RTAI, introduction of RT Preempt, etc. I felt your frustration at times but you 
hung in there. Once again, thanks to you and all the others who worked on it.
Alan




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