Re: [Emc-users] $64 question

[Lawrence Glaister]

Hi Gene,
look for a linux program called pstoedit.
It will read .ps (postscript) files and output in many formats including 
dxf and gcode for linuxcnc. I wrote the gcode output module for pstoedit.
It only works for postscript files that have line and curve 
primitives... so it doesn't work on embedded images. I used it a couple 
of times to engrave some great circle world maps I generated.

pstoedit: PostScript and PDF files to editable vector graphics converter
available in the ubuntu universe repository or from source if you want 
to try building it for mac.

cheers
Lawrence ve7it

On 14-11-06 09:19 PM, Gene Heskett wrote:
> Hi everybody;
>
> Do we have a translator program that can make gcode out of an .eps?
>
> Or an .ai, presumably from some gfx proggy that runs on a Mac.
>
> Thanks.
>
> Cheers, Gene Heskett
>

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Re: [Emc-users] $64 question

[Gene Heskett]

On Friday 07 November 2014 01:10:51 Dave Cole did opine
And Gene did reply:
> On 11/7/2014 12:19 AM, Gene Heskett wrote:
> > Hi everybody;
> > 
> > Do we have a translator program that can make gcode out of an .eps?
> > 
> > Or an .ai, presumably from some gfx proggy that runs on a Mac.
> > 
> > Thanks.
> > 
> > Cheers, Gene Heskett
> 
> FYI -
> 
> http://helpx.adobe.com/illustrator/using/importing-eps-dcs-autocad-file
> s.html
> 
> I don't have Illustrator, but if you know someone who does perhaps they
> could import your eps file and then print or save it to a format you
> can use?
> 
> Dave

I can view it or print it just fine, ghostscript knows about encapsulated 
postscript.  I just figure if its printable, it ought to be something that 
can be traced & made into gcode as its your basic B&W image with some 
ascii etching that should go about halfway thru a sheet of lexan when 
milled.

If gimp knows how to import an .ai file, thats news to me. I'll give all 3 
a chance at it though, gimp, OO and LO. maybe LO can at least read it.

Yes it can!  There is also a security update to LO that I have now tried 
to pull 3 times, but each time the download dies with a few hundred k's to 
go in a 200+ megabyte dl.  There is a beg screen on the dl page, I wonder 
if they are shutting it off if no donation is made?

Thats pretty low IMO.  If the dl had finished ok, I was ready to make a 
default donation of 20 USD, its good stuff.  Now I am not so sure. I'll 
kill that chromium session and see if FF can dl it.  Later & thanks folks.
> 
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Cheers, Gene Heskett
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Re: [Emc-users] New refit

[Marshland Engineering]

Hi Andy

Thanks for the reply. I too was getting these low figures and thought I was
missing a 1000 unit error. 

Thinking about it, something appears to be wrong. For me to manually push a
50kg table from 0 to 10m/min would take a bit of effort, but, possibly the
friction/oil film takes most of the energy. I suppose 10m/min is only 0.6 kph
so 10-20 watts would be enough. Why does my Anilam lathe and SWI mill use 2 kw
motors ? 

Got my first issue. The new Gigabyte GA-J1900N motherboard bios/boot does not
like the USB address and fails to load them. The mouse and both keyboard work
until debian starts to load and the they both switch off. 

usb 1-1: device not accepting address 2, error -110
usb 1-1: new high-speed USB device number 3 using ehci_hcd

It's late here so I research solutions tomorrow. 

Cheers Wallace
 


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Re: [Emc-users] $64 question

[andy pugh]

On 7 November 2014 05:19, Gene Heskett  wrote:

> Do we have a translator program that can make gcode out of an .eps?

Gcodetools is a plug-in for Inkscape:
http://wiki.inkscape.org/wiki/index.php/Extension_repository#Gcode_tools

Inkscape opens eps with help, or ai natively.
http://wiki.inkscape.org/wiki/index.php/Frequently_asked_questions#What_formats_can_Inkscape_import.2Fexport.3F

Inkscape is a package that everyone should have anyway.

-- 
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Re: [Emc-users] New refit

[andy pugh]

On 7 November 2014 11:55, Marshland Engineering
 wrote:
> so 10-20 watts would be enough. Why does my Anilam lathe and SWI mill use 2 kw
> motors ?

It is probably to get the steady-state constant torque rating required
for the cutting forces.

Lets consider a cut with the max cutter that the spec says (32mm)
making a 6mm deep slot.
http://zero-divide.net/?page=fswizard calculates cutting forces.
That suggests 450 rpm, 172mm/min feed and 1800N cutting force.
That is still only 5W of power required, but the ball-screw torque is
now 9.0 Nm (1300 oz-in)  and suddenly your motors look undersized.
(you should be able to make the cut at 3mm DOC and a slower feed, though)

-- 
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If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto

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Re: [Emc-users] New refit

[Brian Morel]

Try apt-get update & apt-get upgrade / reboot.  That may be an issue that
was recently fixed in the RTAI kernel.

-Original Message-
From: Marshland Engineering [mailto:marshl...@marshland.co.nz] 
Sent: Friday, November 07, 2014 6:55 AM
To: emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] New refit

Hi Andy

Thanks for the reply. I too was getting these low figures and thought I was
missing a 1000 unit error. 

Thinking about it, something appears to be wrong. For me to manually push a
50kg table from 0 to 10m/min would take a bit of effort, but, possibly the
friction/oil film takes most of the energy. I suppose 10m/min is only 0.6
kph so 10-20 watts would be enough. Why does my Anilam lathe and SWI mill
use 2 kw motors ? 

Got my first issue. The new Gigabyte GA-J1900N motherboard bios/boot does
not like the USB address and fails to load them. The mouse and both keyboard
work until debian starts to load and the they both switch off. 

usb 1-1: device not accepting address 2, error -110 usb 1-1: new high-speed
USB device number 3 using ehci_hcd

It's late here so I research solutions tomorrow. 

Cheers Wallace
 



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Re: [Emc-users] New refit

[Sebastian Kuzminsky]

On 11/07/2014 04:55 AM, Marshland Engineering wrote:
> Got my first issue. The new Gigabyte GA-J1900N motherboard bios/boot does not
> like the USB address and fails to load them. The mouse and both keyboard work
> until debian starts to load and the they both switch off. 
> 
> usb 1-1: device not accepting address 2, error -110
> usb 1-1: new high-speed USB device number 3 using ehci_hcd

Is this while trying to boot from the LinuxCNC 2.6 live-cd?

If so, try re-downloading it, Chris Radek just updated it with a bug-fix
for the J1900 motherboard.


-- 
Sebastian Kuzminsky

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Re: [Emc-users] New refit

[dave]

On Fri, 2014-11-07 at 12:24 +, andy pugh wrote:
> On 7 November 2014 11:55, Marshland Engineering
>  wrote:
> > so 10-20 watts would be enough. Why does my Anilam lathe and SWI mill use 2 
> > kw
> > motors ?
> 
> It is probably to get the steady-state constant torque rating required
> for the cutting forces.
> 
> Lets consider a cut with the max cutter that the spec says (32mm)
> making a 6mm deep slot.
> http://zero-divide.net/?page=fswizard calculates cutting forces.
> That suggests 450 rpm, 172mm/min feed and 1800N cutting force.
> That is still only 5W of power required, but the ball-screw torque is
> now 9.0 Nm (1300 oz-in)  and suddenly your motors look undersized.
> (you should be able to make the cut at 3mm DOC and a slower feed, though)
> 
IIUC cast to cast friction chews up a lot of power. My small mill is
somewhat like a BP. SEM MT30H servo motors at about 100 v. 

http://igor.chudov.com/projects/Bridgeport-Series-II-Interact-2-CNC-Mill/_Manuals/SEM-MT_Technical_Data_Manual.pdf

I used to drive them with 165 vdc and Servo Dynamics BR-1525 amps. Max
speeds were in the range of 100 ipm. I now have backed off and use a 100
vdc source and it is very comfortable at 30 ipm. I intend to change the
gearing to see if I can get a bit more speed but that means a major
change in driving the X axis. Haven't found a roundtoit for that task. 

On the other hand the Mazak V5 with similar motors and 10X the mass
but the same power supply and polymer ways will do 400 ipm with ease. 

HTH

Dave


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[Emc-users] Unable to get Nvidia Graphic Card working with nvidia drivers .

[alex chiosso]

Hi to all.
I've built a new desktop pc (honestly I bought the hw components a couple
of years ago) to use it for LCNC application hoping to get a good latency
numbers .
The mother board is an ASUS P5KPL SE ;
The Graphic Card is an ASUS EN8400GS 512MB based on the GeForce 8400GS chip
;
The Processor is an Intel Pentium E6500 Dual Core ;
The Ram is a 2GB DDR2 800Mhz ;
The HD is a Seagate Barracuda 7200.12 ;

I've installed LCNC using the pre-compiled version CD 2.6.1 with Debian
Wheezy .

After the installation done and the upgrade using the update manager I ran
the Latency test application to see the latency numbers and the test was
not good (I mean about 7 Max Jitter on both the threads) .

I've not modified the GRUB for ISOLCPU=1 yet .

But what I can see is that the Nvidia Card is not using the proprietary
drivers .

I tried few different ways using "solutions" from the net but there is no
way to get the Nviadia drivers to be loaded properly.

I post the files :
- Xorg.0.log.old that show some information on the Nvidia drivers loading
issue ;
- Xorg.0.log that show the information after a correct startup of the PC
without invoking the use of the Nvidia proprietary Drivers.

The last test I did was reinstalling the LCNC CD (so a clean of all the
Nvidia trials tests I did) and try this solution
 from the Official
Debian Wiki site .

The problem is that with the invoking of the Nvidia Drivers load procedure
I can't get the system booting completely and the display is showing a
blinking cursor.

Maybe the system stops when is loading (or trying to load) the Nvidia
Drivers .

The only way-out that I found is to remove (or rename) the file

/etc/X11/xorg.conf.d

and perform a system reboot.

As it's clear I'm not familiar with Linux to be able to solve this
issue so I'm asking your help.


Regards

Alex
[22.982] 
X.Org X Server 1.12.4
Release Date: 2012-08-27
[22.982] X Protocol Version 11, Revision 0
[22.982] Build Operating System: Linux 3.2.0-4-amd64 i686 Debian
[22.982] Current Operating System: Linux cnc-pc 3.4-9-rtai-686-pae #1 SMP PREEMPT Debian 3.4.55-4linuxcnc i686
[22.982] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.4-9-rtai-686-pae root=UUID=32b9e6c5-a123-4823-bd85-1666f1b508c0 ro initrd=/install/gtk/initrd.gz lapic quiet rootdelay=5
[22.982] Build Date: 17 December 2013  08:37:13PM
[22.982] xorg-server 2:1.12.4-6+deb7u2 (Julien Cristau ) 
[22.982] Current version of pixman: 0.26.0
[22.982] 	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
[22.982] Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[22.982] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Nov  7 16:18:41 2014
[23.007] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[23.014] (==) No Layout section.  Using the first Screen section.
[23.014] (==) No screen section available. Using defaults.
[23.014] (**) |-->Screen "Default Screen Section" (0)
[23.014] (**) |   |-->Monitor ""
[23.027] (==) No monitor specified for screen "Default Screen Section".
	Using a default monitor configuration.
[23.027] (==) Automatically adding devices
[23.027] (==) Automatically enabling devices
[23.260] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[23.260] 	Entry deleted from font path.
[23.272] (WW) The directory "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType" does not exist.
[23.272] 	Entry deleted from font path.
[23.272] (==) FontPath set to:
	/usr/share/fonts/X11/misc,
	/usr/share/fonts/X11/100dpi/:unscaled,
	/usr/share/fonts/X11/75dpi/:unscaled,
	/usr/share/fonts/X11/Type1,
	/usr/share/fonts/X11/100dpi,
	/usr/share/fonts/X11/75dpi,
	built-ins
[23.272] (==) ModulePath set to "/usr/lib/xorg/modules"
[23.272] (II) The server relies on udev to provide the list of input devices.
	If no devices become available, reconfigure udev or disable AutoAddDevices.
[23.272] (II) Loader magic: 0xb77b35a0
[23.272] (II) Module ABI versions:
[23.272] 	X.Org ANSI C Emulation: 0.4
[23.272] 	X.Org Video Driver: 12.1
[23.272] 	X.Org XInput driver : 16.0
[23.272] 	X.Org Server Extension : 6.0
[23.273] (--) PCI:*(0:1:0:0) 10de:06e4:1043:8321 rev 161, Mem @ 0xfd00/16777216, 0xe000/268435456, 0xfa00/33554432, I/O @ 0xdc00/128, BIOS @ 0x/131072
[23.273] (II) Open ACPI successful (/var/run/acpid.socket)
[23.273] (II) LoadModule: "extmod"
[23.352] (II) Loading /usr/lib/xorg/modules/extensions/libextmod.so
[23.363] (II) Module extmod: vendor="X.Org Foundation"
[23.363] 	compiled for 1.12.4, module version = 1.0.0
[23.363] 	Module class: X.Org Server Extension
[23.363] 	ABI class: X.Org Server Extension, version 6.0
[

Re: [Emc-users] $64 question

[Gene Heskett]

On Friday 07 November 2014 01:37:14 Todd Zuercher did opine
And Gene did reply:
> Inkscape can open ai files (not sure about eps).

It appears to be able to do both, but the .ai file would appear to have 
different content in the inkscape rendering.

The .eps rendition appears to be the correct one.
But I don't see an export as gcode option, nor does the edge detection 
appear to work.  I apparently need to install more inkscape gizmo's.

I'll check the wiki for that.  Followed the inkscape to russia and 
installed all the latest gcodetools, which now appear in the extensions 
menu.  Kewl! I'd not known about those before & just added about 10 new 
functions to inkscape. I take that I must do a surround box selection of 
each of the two images.  I'll mess around & find out.

> It can also be made to
> produce g-code. (sort of) Corel Draw can open both. I don't know of
> any way to go sraight to g-code like a filter.  I don't think I'd want
> to either.  I wouldn't trust it. I like seeing my tool paths in the
> cam programs I use.
> 
So do I. :)

Thank You for the hints Todd, I think my creativity was just enhanced, a 
lot.

> - Original Message -
> From: "Gene Heskett" 
> To: "Enhanced Machine Controller (EMC)"
>  Sent: Friday, November 7, 2014
> 12:19:19 AM
> Subject: [Emc-users] $64 question
> 
> Hi everybody;
> 
> Do we have a translator program that can make gcode out of an .eps?
> 
> Or an .ai, presumably from some gfx proggy that runs on a Mac.
> 
> Thanks.
> 
> Cheers, Gene Heskett


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)
Genes Web page 
US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS

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Re: [Emc-users] Unable to get Nvidia Graphic Card working with nvidia drivers .

[Dave Caroline]

Nvidia is a known problem see
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?TroubleShooting#NVidia_and_ATI_graphics_cards
try those solutions and any other graphics card you have lying around

Dave Caroline

On 07/11/2014, alex chiosso  wrote:
> Hi to all.
> I've built a new desktop pc (honestly I bought the hw components a couple
> of years ago) to use it for LCNC application hoping to get a good latency
> numbers .
> The mother board is an ASUS P5KPL SE ;
> The Graphic Card is an ASUS EN8400GS 512MB based on the GeForce 8400GS chip
> ;
> The Processor is an Intel Pentium E6500 Dual Core ;
> The Ram is a 2GB DDR2 800Mhz ;
> The HD is a Seagate Barracuda 7200.12 ;
>
> I've installed LCNC using the pre-compiled version CD 2.6.1 with Debian
> Wheezy .
>
> After the installation done and the upgrade using the update manager I ran
> the Latency test application to see the latency numbers and the test was
> not good (I mean about 7 Max Jitter on both the threads) .
>
> I've not modified the GRUB for ISOLCPU=1 yet .
>
> But what I can see is that the Nvidia Card is not using the proprietary
> drivers .
>
> I tried few different ways using "solutions" from the net but there is no
> way to get the Nviadia drivers to be loaded properly.
>
> I post the files :
> - Xorg.0.log.old that show some information on the Nvidia drivers loading
> issue ;
> - Xorg.0.log that show the information after a correct startup of the PC
> without invoking the use of the Nvidia proprietary Drivers.
>
> The last test I did was reinstalling the LCNC CD (so a clean of all the
> Nvidia trials tests I did) and try this solution
>  from the Official
> Debian Wiki site .
>
> The problem is that with the invoking of the Nvidia Drivers load procedure
> I can't get the system booting completely and the display is showing a
> blinking cursor.
>
> Maybe the system stops when is loading (or trying to load) the Nvidia
> Drivers .
>
> The only way-out that I found is to remove (or rename) the file
>
> /etc/X11/xorg.conf.d
>
> and perform a system reboot.
>
> As it's clear I'm not familiar with Linux to be able to solve this
> issue so I'm asking your help.
>
>
> Regards
>
> Alex
>

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Re: [Emc-users] Unable to get Nvidia Graphic Card working with nvidia drivers .

[alex chiosso]

Hi Dave .
Actually seems that the NOUVEAU drivers are used as I can see into the
Xorg.0.log file I've attached .
Do you suggest to use the Vesa instead of Nouveau ?

Alex

On Fri, Nov 7, 2014 at 5:39 PM, Dave Caroline 
wrote:

> Nvidia is a known problem see
>
> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?TroubleShooting#NVidia_and_ATI_graphics_cards
> try those solutions and any other graphics card you have lying around
>
> Dave Caroline
>
> On 07/11/2014, alex chiosso  wrote:
> > Hi to all.
> > I've built a new desktop pc (honestly I bought the hw components a couple
> > of years ago) to use it for LCNC application hoping to get a good latency
> > numbers .
> > The mother board is an ASUS P5KPL SE ;
> > The Graphic Card is an ASUS EN8400GS 512MB based on the GeForce 8400GS
> chip
> > ;
> > The Processor is an Intel Pentium E6500 Dual Core ;
> > The Ram is a 2GB DDR2 800Mhz ;
> > The HD is a Seagate Barracuda 7200.12 ;
> >
> > I've installed LCNC using the pre-compiled version CD 2.6.1 with Debian
> > Wheezy .
> >
> > After the installation done and the upgrade using the update manager I
> ran
> > the Latency test application to see the latency numbers and the test was
> > not good (I mean about 7 Max Jitter on both the threads) .
> >
> > I've not modified the GRUB for ISOLCPU=1 yet .
> >
> > But what I can see is that the Nvidia Card is not using the proprietary
> > drivers .
> >
> > I tried few different ways using "solutions" from the net but there is no
> > way to get the Nviadia drivers to be loaded properly.
> >
> > I post the files :
> > - Xorg.0.log.old that show some information on the Nvidia drivers loading
> > issue ;
> > - Xorg.0.log that show the information after a correct startup of the PC
> > without invoking the use of the Nvidia proprietary Drivers.
> >
> > The last test I did was reinstalling the LCNC CD (so a clean of all the
> > Nvidia trials tests I did) and try this solution
> >  from the
> Official
> > Debian Wiki site .
> >
> > The problem is that with the invoking of the Nvidia Drivers load
> procedure
> > I can't get the system booting completely and the display is showing a
> > blinking cursor.
> >
> > Maybe the system stops when is loading (or trying to load) the Nvidia
> > Drivers .
> >
> > The only way-out that I found is to remove (or rename) the file
> >
> > /etc/X11/xorg.conf.d
> >
> > and perform a system reboot.
> >
> > As it's clear I'm not familiar with Linux to be able to solve this
> > issue so I'm asking your help.
> >
> >
> > Regards
> >
> > Alex
> >
>
>
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Re: [Emc-users] New refit

[Dave Cole]

On 11/7/2014 9:57 AM, Sebastian Kuzminsky wrote:
> On 11/07/2014 04:55 AM, Marshland Engineering wrote:
>> Got my first issue. The new Gigabyte GA-J1900N motherboard bios/boot does not
>> like the USB address and fails to load them. The mouse and both keyboard work
>> until debian starts to load and the they both switch off.
>>
>> usb 1-1: device not accepting address 2, error -110
>> usb 1-1: new high-speed USB device number 3 using ehci_hcd
> Is this while trying to boot from the LinuxCNC 2.6 live-cd?
>
> If so, try re-downloading it, Chris Radek just updated it with a bug-fix
> for the J1900 motherboard.
>

Also, make sure you are using bios version F3 or later.

The older bios versions were junk.

Dave


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Re: [Emc-users] $64 question

[Gene Heskett]

On Friday 07 November 2014 03:07:37 Lawrence Glaister did opine
And Gene did reply:
> Hi Gene,
> look for a linux program called pstoedit.

I have it, but did not have the kde gui, so I installed it too, but it 
doesn't show in my menu's. kbuildsycoca or something like that.  But I'll 
let a reboot do that, the next time I need to.

> It will read .ps (postscript) files and output in many formats
> including dxf and gcode for linuxcnc. I wrote the gcode output module
> for pstoedit. It only works for postscript files that have line and
> curve
> primitives... so it doesn't work on embedded images. I used it a couple
> of times to engrave some great circle world maps I generated.
> 
> pstoedit: PostScript and PDF files to editable vector graphics
> converter available in the ubuntu universe repository or from source
> if you want to try building it for mac.
> 
> cheers
> Lawrence ve7it

I recall using something of yours 3 or so years ago, seemed to be well 
polished, but never said thank you.

Thank you.
 
> On 14-11-06 09:19 PM, Gene Heskett wrote:
> > Hi everybody;
> > 
> > Do we have a translator program that can make gcode out of an .eps?
> > 
> > Or an .ai, presumably from some gfx proggy that runs on a Mac.
> > 
> > Thanks.
> > 
> > Cheers, Gene Heskett
> 
> ---
> --- ___
> 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)
Genes Web page 
US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS

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[Emc-users] Thank you! (was Re: $64 question)

[pc]

Excellent point, the good folks developing and enhancing LinuxCNC hear all our 
troubles and complaints here, but probably far too little thanks for their 
efforts.

Thank you!


--Original Mail--
From: "Gene Heskett" 
To: 
Sent: Fri, 7 Nov 2014 12:00:53 -0500
Subject: Re: [Emc-users] $64 question

On Friday 07 November 2014 03:07:37 Lawrence Glaister did opine
And Gene did reply:
> Hi Gene,
> look for a linux program called pstoedit.

I have it, but did not have the kde gui, so I installed it too, but it 
doesn't show in my menu's. kbuildsycoca or something like that.  But I'll 
let a reboot do that, the next time I need to.

> It will read .ps (postscript) files and output in many formats
> including dxf and gcode for linuxcnc. I wrote the gcode output module
> for pstoedit. It only works for postscript files that have line and
> curve
> primitives... so it doesn't work on embedded images. I used it a couple
> of times to engrave some great circle world maps I generated.
> 
> pstoedit: PostScript and PDF files to editable vector graphics
> converter available in the ubuntu universe repository or from source
> if you want to try building it for mac.
> 
> cheers
> Lawrence ve7it

I recall using something of yours 3 or so years ago, seemed to be well 
polished, but never said thank you.

Thank you.
 
> On 14-11-06 09:19 PM, Gene Heskett wrote:
> > Hi everybody;
> > 
> > Do we have a translator program that can make gcode out of an .eps?
> > 
> > Or an .ai, presumably from some gfx proggy that runs on a Mac.
> > 
> > Thanks.
> > 
> > Cheers, Gene Heskett
> 
> ---
> --- ___
> 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)
Genes Web page 
US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS

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Re: [Emc-users] New refit

[Pete Matos]

Well I don't know how helpful this is but I used to have an RF45 that I
retrofit to CNC. It was a nice little mill but I have since sold it and
moved on to a Vertical Machining center retrofit.  My machine used Geckos
and brushed DC servos on it.  The ones I chose were probably a bit overkill
but it had 1100 OZ in servos with belt drives on it. The Z which moves that
rather heavy millhead up and down the column used a 4-1 ratio and the other
axes a 3-1 ratio mostly for convenience. You could probably get away with
5-600 Oz in servos with the right belt drive ratio or maybe a nema 34 8nm
stepper on it direct drive.  Currently I would look into the new Hybrid
servo steppers available and go direct drive on X and Y and maybe use a
reduction on Z to help with the load. Mine ran on Mach3 because I did not
know any better so now it would be linuxCNC and mesa cards for sure. I also
added some gas springs to either side of the millhead which helped
tremendously and made the Z rapids much quicker. Should have done that at
the beginning really. My build is called Finally getting started on the CNC
zone benchtop forum. you can read all about what I did and how I did it
there including a custom built belt drive with 3hp 3phase motor and
sensorless vector drive. Upgraded spindle bearings to angular contacts and
a complete refinish and repaint of the machine while adding one shot oiler
to all the movements and ballscrews. Lots of work in that little mill and
once it was finished it was actually quite a decent machine. Nothing like
my Cincinatti but for a chinese bedmill it was pretty sweet.  Good luck
man. peace

Pete


On Fri, Nov 7, 2014 at 11:52 AM, Dave Cole  wrote:

> On 11/7/2014 9:57 AM, Sebastian Kuzminsky wrote:
> > On 11/07/2014 04:55 AM, Marshland Engineering wrote:
> >> Got my first issue. The new Gigabyte GA-J1900N motherboard bios/boot
> does not
> >> like the USB address and fails to load them. The mouse and both
> keyboard work
> >> until debian starts to load and the they both switch off.
> >>
> >> usb 1-1: device not accepting address 2, error -110
> >> usb 1-1: new high-speed USB device number 3 using ehci_hcd
> > Is this while trying to boot from the LinuxCNC 2.6 live-cd?
> >
> > If so, try re-downloading it, Chris Radek just updated it with a bug-fix
> > for the J1900 motherboard.
> >
>
> Also, make sure you are using bios version F3 or later.
>
> The older bios versions were junk.
>
> Dave
>
>
> ---
> This email is free from viruses and malware because avast! Antivirus
> protection is active.
> http://www.avast.com
>
>
>
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-- 
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A and N Precision and Fabrication
Maryville, Tennessee
865-236-8996
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Re: [Emc-users] Unable to get Nvidia Graphic Card working with nvidia drivers .

[Eric Keller]

Last time I set up a lcnc system I had a lot of trouble with the Nvidia
drivers -- they wouldn't install.  I did go with Vesa.  I don't really
think it's a problem.

On Fri, Nov 7, 2014 at 11:46 AM, alex chiosso  wrote:

> Hi Dave .
> Actually seems that the NOUVEAU drivers are used as I can see into the
> Xorg.0.log file I've attached .
> Do you suggest to use the Vesa instead of Nouveau ?
>
> Alex
>
> On Fri, Nov 7, 2014 at 5:39 PM, Dave Caroline  >
> wrote:
>
> > Nvidia is a known problem see
> >
> >
> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?TroubleShooting#NVidia_and_ATI_graphics_cards
> > try those solutions and any other graphics card you have lying around
> >
> > Dave Caroline
> >
> > On 07/11/2014, alex chiosso  wrote:
> > > Hi to all.
> > > I've built a new desktop pc (honestly I bought the hw components a
> couple
> > > of years ago) to use it for LCNC application hoping to get a good
> latency
> > > numbers .
> > > The mother board is an ASUS P5KPL SE ;
> > > The Graphic Card is an ASUS EN8400GS 512MB based on the GeForce 8400GS
> > chip
> > > ;
> > > The Processor is an Intel Pentium E6500 Dual Core ;
> > > The Ram is a 2GB DDR2 800Mhz ;
> > > The HD is a Seagate Barracuda 7200.12 ;
> > >
> > > I've installed LCNC using the pre-compiled version CD 2.6.1 with Debian
> > > Wheezy .
> > >
> > > After the installation done and the upgrade using the update manager I
> > ran
> > > the Latency test application to see the latency numbers and the test
> was
> > > not good (I mean about 7 Max Jitter on both the threads) .
> > >
> > > I've not modified the GRUB for ISOLCPU=1 yet .
> > >
> > > But what I can see is that the Nvidia Card is not using the proprietary
> > > drivers .
> > >
> > > I tried few different ways using "solutions" from the net but there is
> no
> > > way to get the Nviadia drivers to be loaded properly.
> > >
> > > I post the files :
> > > - Xorg.0.log.old that show some information on the Nvidia drivers
> loading
> > > issue ;
> > > - Xorg.0.log that show the information after a correct startup of the
> PC
> > > without invoking the use of the Nvidia proprietary Drivers.
> > >
> > > The last test I did was reinstalling the LCNC CD (so a clean of all the
> > > Nvidia trials tests I did) and try this solution
> > >  from the
> > Official
> > > Debian Wiki site .
> > >
> > > The problem is that with the invoking of the Nvidia Drivers load
> > procedure
> > > I can't get the system booting completely and the display is showing a
> > > blinking cursor.
> > >
> > > Maybe the system stops when is loading (or trying to load) the Nvidia
> > > Drivers .
> > >
> > > The only way-out that I found is to remove (or rename) the file
> > >
> > > /etc/X11/xorg.conf.d
> > >
> > > and perform a system reboot.
> > >
> > > As it's clear I'm not familiar with Linux to be able to solve this
> > > issue so I'm asking your help.
> > >
> > >
> > > Regards
> > >
> > > Alex
> > >
> >
> >
> >
> --
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
>
> --
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Re: [Emc-users] $64 question

[Gene Heskett]

On Friday 07 November 2014 07:08:53 andy pugh did opine
And Gene did reply:
> On 7 November 2014 05:19, Gene Heskett  wrote:
> > Do we have a translator program that can make gcode out of an .eps?
> 
> Gcodetools is a plug-in for Inkscape:
> http://wiki.inkscape.org/wiki/index.php/Extension_repository#Gcode_tool
> s

Yup, just installed 1.7, all of it, got lots of new menu options under 
extensions/gcodetools.  Fired one of them off to try something about 10 
minutes ago, and its either locked up, or takes a very long time.  Not 
running at a very high priority if its running as its not hogging the 
machine a bit.  Shows about 10 lines down from the top of htops display 
when sorted by cpu. 

Is that normal?

One item I could not find in the startup menu's one of the gcode tools 
functions show, is where the tool bit should be, inside the black, or 
outside, and what size of tool am I going to use?  3 drilled holes in each 
pattern that could be done by simply plunging the .125" mill all the way 
thru a .125 thick material.

15 minutes later still a spinner, so I had a root htop kill it.

So I obviously need a tut on how to work it.

> Inkscape opens eps with help, or ai natively.
> http://wiki.inkscape.org/wiki/index.php/Frequently_asked_questions#What
> _formats_can_Inkscape_import.2Fexport.3F
> 
> Inkscape is a package that everyone should have anyway.

Agreed.  Thanks Andy.

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)
Genes Web page 
US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS

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Re: [Emc-users] New refit

[Gene Heskett]

On Friday 07 November 2014 07:24:43 andy pugh did opine
And Gene did reply:
> On 7 November 2014 11:55, Marshland Engineering
> 
>  wrote:
> > so 10-20 watts would be enough. Why does my Anilam lathe and SWI mill
> > use 2 kw motors ?
> 
> It is probably to get the steady-state constant torque rating required
> for the cutting forces.
> 
> Lets consider a cut with the max cutter that the spec says (32mm)
> making a 6mm deep slot.
> http://zero-divide.net/?page=fswizard calculates cutting forces.

Nice link Andy, Thanks, bookmarked FFR.

> That suggests 450 rpm, 172mm/min feed and 1800N cutting force.
> That is still only 5W of power required, but the ball-screw torque is
> now 9.0 Nm (1300 oz-in)  and suddenly your motors look undersized.
> (you should be able to make the cut at 3mm DOC and a slower feed,
> though)


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)
Genes Web page 
US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS

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Re: [Emc-users] Thank you! (was Re: $64 question)

[Gene Heskett]

On Friday 07 November 2014 12:07:03 p...@wpnet.us did opine
And Gene did reply:
> Excellent point, the good folks developing and enhancing LinuxCNC hear
> all our troubles and complaints here, but probably far too little
> thanks for their efforts.
> 
> Thank you!
> 
> 
> --Original Mail--
> From: "Gene Heskett" 
> To: 
> Sent: Fri, 7 Nov 2014 12:00:53 -0500
> Subject: Re: [Emc-users] $64 question
> 
> On Friday 07 November 2014 03:07:37 Lawrence Glaister did opine
> 
> And Gene did reply:
> > Hi Gene,
> > look for a linux program called pstoedit.
> 
> I have it, but did not have the kde gui, so I installed it too, but it
> doesn't show in my menu's. kbuildsycoca or something like that.  But
> I'll let a reboot do that, the next time I need to.
> 
> > It will read .ps (postscript) files and output in many formats
> > including dxf and gcode for linuxcnc. I wrote the gcode output module
> > for pstoedit. It only works for postscript files that have line and
> > curve
> > primitives... so it doesn't work on embedded images. I used it a
> > couple of times to engrave some great circle world maps I generated.
> > 
> > pstoedit: PostScript and PDF files to editable vector graphics
> > converter available in the ubuntu universe repository or from source
> > if you want to try building it for mac.
> > 
> > cheers
> > Lawrence ve7it
> 
> I recall using something of yours 3 or so years ago, seemed to be well
> polished, but never said thank you.
> 
> Thank you.

Precisely my point.  We tend to get on a first name basis and skip the 
thank you's entirely too often.  Thats BS IMO, the folks who spend their 
time solving problems are more than likely scratching their own itches, 
but when they make it available to the rest of us, we really should be 
saying thank you.

If not, that well may run dry & then we're all hurting.

my 2c.

Thank you.

> > On 14-11-06 09:19 PM, Gene Heskett wrote:
> > > Hi everybody;
> > > 
> > > Do we have a translator program that can make gcode out of an .eps?
> > > 
> > > Or an .ai, presumably from some gfx proggy that runs on a Mac.
> > > 
> > > Thanks.
> > > 
> > > Cheers, Gene Heskett
> > 
> > -
> > -- --- ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> 
> Cheers, Gene Heskett


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)
Genes Web page 
US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS

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Re: [Emc-users] Unable to get Nvidia Graphic Card working with nvidia drivers .

[alex chiosso]

Hi Eric .
Did you get good latency numbers with Vesa drivers.
My need is to get the best latency numbers is possible.
If it's better to use the Vesa drivers I will do that .
Nowadays the two biggest Graphic cards/chips manufacturers seems to be
Nvidia and ATI so why it is so hard to get this cards work with their
proprietary drivers ?
Maybe it is a stupid question but I remember that somewhere in the LCNC
documentation there is also the suggestion to use a graphic card instead of
a mother board integrated one. :- (
I used a ASUS mobo with a ASUS GPU thinking about a proper solution but
maybe I was wrong .

Alex

On Fri, Nov 7, 2014 at 6:10 PM, Eric Keller  wrote:

> Last time I set up a lcnc system I had a lot of trouble with the Nvidia
> drivers -- they wouldn't install.  I did go with Vesa.  I don't really
> think it's a problem.
>
> On Fri, Nov 7, 2014 at 11:46 AM, alex chiosso  wrote:
>
> > Hi Dave .
> > Actually seems that the NOUVEAU drivers are used as I can see into the
> > Xorg.0.log file I've attached .
> > Do you suggest to use the Vesa instead of Nouveau ?
> >
> > Alex
> >
> > On Fri, Nov 7, 2014 at 5:39 PM, Dave Caroline <
> dave.thearchiv...@gmail.com
> > >
> > wrote:
> >
> > > Nvidia is a known problem see
> > >
> > >
> >
> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?TroubleShooting#NVidia_and_ATI_graphics_cards
> > > try those solutions and any other graphics card you have lying around
> > >
> > > Dave Caroline
> > >
> > > On 07/11/2014, alex chiosso  wrote:
> > > > Hi to all.
> > > > I've built a new desktop pc (honestly I bought the hw components a
> > couple
> > > > of years ago) to use it for LCNC application hoping to get a good
> > latency
> > > > numbers .
> > > > The mother board is an ASUS P5KPL SE ;
> > > > The Graphic Card is an ASUS EN8400GS 512MB based on the GeForce
> 8400GS
> > > chip
> > > > ;
> > > > The Processor is an Intel Pentium E6500 Dual Core ;
> > > > The Ram is a 2GB DDR2 800Mhz ;
> > > > The HD is a Seagate Barracuda 7200.12 ;
> > > >
> > > > I've installed LCNC using the pre-compiled version CD 2.6.1 with
> Debian
> > > > Wheezy .
> > > >
> > > > After the installation done and the upgrade using the update manager
> I
> > > ran
> > > > the Latency test application to see the latency numbers and the test
> > was
> > > > not good (I mean about 7 Max Jitter on both the threads) .
> > > >
> > > > I've not modified the GRUB for ISOLCPU=1 yet .
> > > >
> > > > But what I can see is that the Nvidia Card is not using the
> proprietary
> > > > drivers .
> > > >
> > > > I tried few different ways using "solutions" from the net but there
> is
> > no
> > > > way to get the Nviadia drivers to be loaded properly.
> > > >
> > > > I post the files :
> > > > - Xorg.0.log.old that show some information on the Nvidia drivers
> > loading
> > > > issue ;
> > > > - Xorg.0.log that show the information after a correct startup of the
> > PC
> > > > without invoking the use of the Nvidia proprietary Drivers.
> > > >
> > > > The last test I did was reinstalling the LCNC CD (so a clean of all
> the
> > > > Nvidia trials tests I did) and try this solution
> > > >  from the
> > > Official
> > > > Debian Wiki site .
> > > >
> > > > The problem is that with the invoking of the Nvidia Drivers load
> > > procedure
> > > > I can't get the system booting completely and the display is showing
> a
> > > > blinking cursor.
> > > >
> > > > Maybe the system stops when is loading (or trying to load) the Nvidia
> > > > Drivers .
> > > >
> > > > The only way-out that I found is to remove (or rename) the file
> > > >
> > > > /etc/X11/xorg.conf.d
> > > >
> > > > and perform a system reboot.
> > > >
> > > > As it's clear I'm not familiar with Linux to be able to solve this
> > > > issue so I'm asking your help.
> > > >
> > > >
> > > > Regards
> > > >
> > > > Alex
> > > >
> > >
> > >
> > >
> >
> --
> > > ___
> > > Emc-users mailing list
> > > Emc-users@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/emc-users
> > >
> >
> >
> --
> > ___
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> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
>
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Re: [Emc-users] Unable to get Nvidia Graphic Card working with nvidia drivers .

[Eric Keller]

Vesa worked fine.  The open source Nvidia drivers were not good for
latency.  You may wish to go with an interface that doesn't use 3d.  I
believe that the problem with the Nvidia system is that they want a
specific kernel layout and it doesn't work with the RTAI kernel, but I
can't be sure

On Fri, Nov 7, 2014 at 12:32 PM, alex chiosso  wrote:

> Hi Eric .
> Did you get good latency numbers with Vesa drivers.
> My need is to get the best latency numbers is possible.
> If it's better to use the Vesa drivers I will do that .
> Nowadays the two biggest Graphic cards/chips manufacturers seems to be
> Nvidia and ATI so why it is so hard to get this cards work with their
> proprietary drivers ?
> Maybe it is a stupid question but I remember that somewhere in the LCNC
> documentation there is also the suggestion to use a graphic card instead of
> a mother board integrated one. :- (
> I used a ASUS mobo with a ASUS GPU thinking about a proper solution but
> maybe I was wrong .
>
> Alex
>
> On Fri, Nov 7, 2014 at 6:10 PM, Eric Keller  wrote:
>
> > Last time I set up a lcnc system I had a lot of trouble with the Nvidia
> > drivers -- they wouldn't install.  I did go with Vesa.  I don't really
> > think it's a problem.
> >
> > On Fri, Nov 7, 2014 at 11:46 AM, alex chiosso 
> wrote:
> >
> > > Hi Dave .
> > > Actually seems that the NOUVEAU drivers are used as I can see into the
> > > Xorg.0.log file I've attached .
> > > Do you suggest to use the Vesa instead of Nouveau ?
> > >
> > > Alex
> > >
> > > On Fri, Nov 7, 2014 at 5:39 PM, Dave Caroline <
> > dave.thearchiv...@gmail.com
> > > >
> > > wrote:
> > >
> > > > Nvidia is a known problem see
> > > >
> > > >
> > >
> >
> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?TroubleShooting#NVidia_and_ATI_graphics_cards
> > > > try those solutions and any other graphics card you have lying around
> > > >
> > > > Dave Caroline
> > > >
> > > > On 07/11/2014, alex chiosso  wrote:
> > > > > Hi to all.
> > > > > I've built a new desktop pc (honestly I bought the hw components a
> > > couple
> > > > > of years ago) to use it for LCNC application hoping to get a good
> > > latency
> > > > > numbers .
> > > > > The mother board is an ASUS P5KPL SE ;
> > > > > The Graphic Card is an ASUS EN8400GS 512MB based on the GeForce
> > 8400GS
> > > > chip
> > > > > ;
> > > > > The Processor is an Intel Pentium E6500 Dual Core ;
> > > > > The Ram is a 2GB DDR2 800Mhz ;
> > > > > The HD is a Seagate Barracuda 7200.12 ;
> > > > >
> > > > > I've installed LCNC using the pre-compiled version CD 2.6.1 with
> > Debian
> > > > > Wheezy .
> > > > >
> > > > > After the installation done and the upgrade using the update
> manager
> > I
> > > > ran
> > > > > the Latency test application to see the latency numbers and the
> test
> > > was
> > > > > not good (I mean about 7 Max Jitter on both the threads) .
> > > > >
> > > > > I've not modified the GRUB for ISOLCPU=1 yet .
> > > > >
> > > > > But what I can see is that the Nvidia Card is not using the
> > proprietary
> > > > > drivers .
> > > > >
> > > > > I tried few different ways using "solutions" from the net but there
> > is
> > > no
> > > > > way to get the Nviadia drivers to be loaded properly.
> > > > >
> > > > > I post the files :
> > > > > - Xorg.0.log.old that show some information on the Nvidia drivers
> > > loading
> > > > > issue ;
> > > > > - Xorg.0.log that show the information after a correct startup of
> the
> > > PC
> > > > > without invoking the use of the Nvidia proprietary Drivers.
> > > > >
> > > > > The last test I did was reinstalling the LCNC CD (so a clean of all
> > the
> > > > > Nvidia trials tests I did) and try this solution
> > > > >  from the
> > > > Official
> > > > > Debian Wiki site .
> > > > >
> > > > > The problem is that with the invoking of the Nvidia Drivers load
> > > > procedure
> > > > > I can't get the system booting completely and the display is
> showing
> > a
> > > > > blinking cursor.
> > > > >
> > > > > Maybe the system stops when is loading (or trying to load) the
> Nvidia
> > > > > Drivers .
> > > > >
> > > > > The only way-out that I found is to remove (or rename) the file
> > > > >
> > > > > /etc/X11/xorg.conf.d
> > > > >
> > > > > and perform a system reboot.
> > > > >
> > > > > As it's clear I'm not familiar with Linux to be able to solve this
> > > > > issue so I'm asking your help.
> > > > >
> > > > >
> > > > > Regards
> > > > >
> > > > > Alex
> > > > >
> > > >
> > > >
> > > >
> > >
> >
> --
> > > > ___
> > > > Emc-users mailing list
> > > > Emc-users@lists.sourceforge.net
> > > > https://lists.sourceforge.net/lists/listinfo/emc-users
> > > >
> > >
> > >
> >
> --
> > > ___
> > > Emc-users mailing list
> > > Emc

Re: [Emc-users] Unable to get Nvidia Graphic Card working with nvidia drivers .

[alex chiosso]

Thank you Eric.
Your observation may be correct .
The Nvidia driver installation is a big issue for many users that are not
using LCNC .
I will remove the drivers I've installed and I will go for the Vesa
solution.
The Gigabyte and ASRock mobo seems to be better than ASUS for LCNC.
And to have a separate graphic card it's not a solution anyway.
My BIOS do not have much parameters to be setup specifically to get a
better performance for real time .
I've made the isolcpu=1 modification but numbers are always pretty high
(6-65000 on both threads) but more stable as I can see.

Alex


On Fri, Nov 7, 2014 at 7:30 PM, Eric Keller  wrote:

> Vesa worked fine.  The open source Nvidia drivers were not good for
> latency.  You may wish to go with an interface that doesn't use 3d.  I
> believe that the problem with the Nvidia system is that they want a
> specific kernel layout and it doesn't work with the RTAI kernel, but I
> can't be sure
>
> On Fri, Nov 7, 2014 at 12:32 PM, alex chiosso  wrote:
>
> > Hi Eric .
> > Did you get good latency numbers with Vesa drivers.
> > My need is to get the best latency numbers is possible.
> > If it's better to use the Vesa drivers I will do that .
> > Nowadays the two biggest Graphic cards/chips manufacturers seems to be
> > Nvidia and ATI so why it is so hard to get this cards work with their
> > proprietary drivers ?
> > Maybe it is a stupid question but I remember that somewhere in the LCNC
> > documentation there is also the suggestion to use a graphic card instead
> of
> > a mother board integrated one. :- (
> > I used a ASUS mobo with a ASUS GPU thinking about a proper solution but
> > maybe I was wrong .
> >
> > Alex
> >
> > On Fri, Nov 7, 2014 at 6:10 PM, Eric Keller  wrote:
> >
> > > Last time I set up a lcnc system I had a lot of trouble with the Nvidia
> > > drivers -- they wouldn't install.  I did go with Vesa.  I don't really
> > > think it's a problem.
> > >
> > > On Fri, Nov 7, 2014 at 11:46 AM, alex chiosso 
> > wrote:
> > >
> > > > Hi Dave .
> > > > Actually seems that the NOUVEAU drivers are used as I can see into
> the
> > > > Xorg.0.log file I've attached .
> > > > Do you suggest to use the Vesa instead of Nouveau ?
> > > >
> > > > Alex
> > > >
> > > > On Fri, Nov 7, 2014 at 5:39 PM, Dave Caroline <
> > > dave.thearchiv...@gmail.com
> > > > >
> > > > wrote:
> > > >
> > > > > Nvidia is a known problem see
> > > > >
> > > > >
> > > >
> > >
> >
> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?TroubleShooting#NVidia_and_ATI_graphics_cards
> > > > > try those solutions and any other graphics card you have lying
> around
> > > > >
> > > > > Dave Caroline
> > > > >
> > > > > On 07/11/2014, alex chiosso  wrote:
> > > > > > Hi to all.
> > > > > > I've built a new desktop pc (honestly I bought the hw components
> a
> > > > couple
> > > > > > of years ago) to use it for LCNC application hoping to get a good
> > > > latency
> > > > > > numbers .
> > > > > > The mother board is an ASUS P5KPL SE ;
> > > > > > The Graphic Card is an ASUS EN8400GS 512MB based on the GeForce
> > > 8400GS
> > > > > chip
> > > > > > ;
> > > > > > The Processor is an Intel Pentium E6500 Dual Core ;
> > > > > > The Ram is a 2GB DDR2 800Mhz ;
> > > > > > The HD is a Seagate Barracuda 7200.12 ;
> > > > > >
> > > > > > I've installed LCNC using the pre-compiled version CD 2.6.1 with
> > > Debian
> > > > > > Wheezy .
> > > > > >
> > > > > > After the installation done and the upgrade using the update
> > manager
> > > I
> > > > > ran
> > > > > > the Latency test application to see the latency numbers and the
> > test
> > > > was
> > > > > > not good (I mean about 7 Max Jitter on both the threads) .
> > > > > >
> > > > > > I've not modified the GRUB for ISOLCPU=1 yet .
> > > > > >
> > > > > > But what I can see is that the Nvidia Card is not using the
> > > proprietary
> > > > > > drivers .
> > > > > >
> > > > > > I tried few different ways using "solutions" from the net but
> there
> > > is
> > > > no
> > > > > > way to get the Nviadia drivers to be loaded properly.
> > > > > >
> > > > > > I post the files :
> > > > > > - Xorg.0.log.old that show some information on the Nvidia drivers
> > > > loading
> > > > > > issue ;
> > > > > > - Xorg.0.log that show the information after a correct startup of
> > the
> > > > PC
> > > > > > without invoking the use of the Nvidia proprietary Drivers.
> > > > > >
> > > > > > The last test I did was reinstalling the LCNC CD (so a clean of
> all
> > > the
> > > > > > Nvidia trials tests I did) and try this solution
> > > > > >  from
> the
> > > > > Official
> > > > > > Debian Wiki site .
> > > > > >
> > > > > > The problem is that with the invoking of the Nvidia Drivers load
> > > > > procedure
> > > > > > I can't get the system booting completely and the display is
> > showing
> > > a
> > > > > > blinking cursor.
> > > > > >
> > > > > > Maybe the system stops when is loading (or trying to load) the
> > Nvidia

Re: [Emc-users] arguments to use

[Cathrine Hribar]

On Thu, 06 Nov 2014 11:43:41 -0700
  Sebastian Kuzminsky  wrote:
> On 11/6/14 10:54 AM,  Cathrine Hribar wrote:
>>
>> Does anyone know where I can find a list of the arguments to use in "while,
>> if,and sub statements? With an explanation of their functions???
> 
> http://linuxcnc.org/docs/2.6/html/gcode/o-code.html
> 
> 
> -- 
> Sebastian Kuzminsky

thanks for the info, it helps a lot.

Bill
> 
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Re: [Emc-users] Unable to get Nvidia Graphic Card working with nvidia drivers .

[Kirk Wallace]

On 11/07/2014 10:30 AM, Eric Keller wrote:
> Vesa worked fine.  The open source Nvidia drivers were not good for
> latency.  You may wish to go with an interface that doesn't use 3d.  I
> believe that the problem with the Nvidia system is that they want a
> specific kernel layout and it doesn't work with the RTAI kernel, but I
> can't be sure

(Thinking more this may not affect boot problems, but anyway...)

I have a very limited understanding of this, but here is my take on it. 
I think many LinuxCNC video issues are due to OpenGL, which is used for 
the Gremlin backplot application.

OpenGL is supposed to be a more direct interface to the video hardware. 
It is a library of functions that allow talking to the video hardware to 
create shapes and shading. Unfortunately, the manufacturers control the 
hardware, and they don't usually like to share their ... well anything 
but your money. So, we have to live with their closed drivers that don't 
cater to Linux, or try dodgy reverse engineered open drivers, or bypass 
the issue.

For LinuxCNC there are two options for OpenGL. The common one is:

libgl1-mesa-glx

which is an API that talks to video hardware (BTW it's a different 
Mesa). The other is:

libgl1-mesa-swx11

which is a software only version that doesn't talk to video hardware and 
is also much slower. One can try running GLXgears and if it crashes, 
switch to the swx11 version. To see which version is active, open 
Synaptic, type "libgl1" into the Quick Search box, and see which libgl1 
from above has the green box next to it. If you decide to change your 
active libgl1, Mark the inactive version and Apply. You should get a 
message indicating that some files will be uninstalled. This is because 
each version is mutually exclusive. Make note of the files you unloaded 
in case you have trouble putting things back the way they where.

Hopefully, someone that knows better will correct any above misinformation.



-- 
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http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/

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[Emc-users] A beginners question about E-Stop and Charge Pumps

[Joe Hildreth]

Hello everyone, 

I am sure these questions are asked all the time but I have found nothing that 
really covers what I am looking for. (But maybe I am not too good with the 
search.) 

I have built a CNC Gantry router based on the KRMx01 design from Kronos 
Robotics. But instead of using the electronics and Mach3 he suggested, I am 
using electronics, motors and Linux CNC. 

The basic machine is up and running and I am using it to cut more parts for the 
machine. I am to the point now that I need to think E-stop, limit and home 
switches, vacuum control (dust collection) and router PID. 

My setup is a C10 (cnc4pc) BOB, (4) CW230 stepper drivers, (2) 36vdc power 
supplies (each feeding 2, CW230 drivers) and (1) 5vdc supply enabling the BOB. 
The CW230 drivers do not have a charge pump or anything like that, though they 
do have a pin called REST that according to the sparse documentation says will 
allow the motor to free spin. (I guess it may be considered an enable) 

Because I have a couple of teenage boys and a wife who have expressed an 
interest in using the machine, I need to make sure it can be stopped in the 
event something unplanned happened. Here is my thought and also where I need 
some guidance on best practice or acceptable practice. 

1) Connect external E-Stop to input pin on controller 
2) Use HAL to logic glue the AXIS GUI estop and AXIS GUI Power button together 
so that IF both E-Stops are on the closed position AND the power is on in AXIS 
GUI THEN allow charge pump signal on output pin of BOB 
3) Connect cnc4pc part C4 (charge pump) inputs to charge pump signal on the 
corresponding output pin on the BOB. The output of the charge pump is a relay 
with the choice of NO or NC contacts. If the charge pump frequency falls above 
or below the operating threshhold, then use this output as a trigger. 
4) Connect the output to (2) C8 (cnc4pc part number) AC relays with 5 volt 
input to connect / disconnect the AC side of the (2) 36vdc power supplies that 
power the CW230 stepper drivers. 

In my simple mind, this should provide the following safety feature. 

A) The machine will only run if both E-Stops (external E-Stop and AXIS GUI 
E-stop) are in the closed positions AND the power button (AXIS GUI) is on. 
Allowing the Charge pump signal to be generated on the output pin of the BOB 
enabling the power to the motors through the Charge Pump and AC Relays. 

B) If either Estop is opened, then the Charge pump signal will be stopped 
causing the power to the supplies to be cut by the AC Relays from the Charge 
Pump. 

C) If the computer crashes and the LPT port is left in an unknown state, the 
charge pump signal should be gone causing the power to the motors to be cut. 

D) Avoid any start up random signals to the LPT port being sent to the motors 
because the drivers will not be powered up. 

Kind of long, but am I on the right track here. Just want to have a margin of 
safety if my boys or wife is trying to use the machine. 

If you are interested, I have a detailed build of this machine, including 
screen casts of LinuxCNC hybrid install, configuration to this point, etc on my 
website which you can see by going to 
http://myheap.com/krmx01-cnc-router/krmx01-build-log.html 

I will be adding this (E-Stop, charge pump, AC relays) to the pages too 
including how to configure and the logic behind the solution. I am hoping it to 
be a resource to others like me who are only in it on the hobby level and still 
have the HUGE learning curves to make it over. 

Many thanks, 

Joe 

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Re: [Emc-users] Unable to get Nvidia Graphic Card working with nvidia drivers .

[John Alexander Stewart]

Alex;

I've made the isolcpu=1 modification but numbers are always pretty high
> (6-65000 on both threads) but more stable as I can see.
>
>
How many cores?  If two, the isolcpus=1 is correct; if four, or one or...
it may not be.

I modified Kent's "07_rtai" script to find the pae kernels; someone else
(sorry, names
are in the script) went through and worked out different cores and what
worked well.
IIRC his/her comments are in the wiki page and in the 07_rtai script.

Just something to check; John.
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Re: [Emc-users] A beginners question about E-Stop and Charge Pumps

[Bruce Layne]

Hi Joe,

The industry preferred method of implementing an E-stop would be the 
opposite of what you propose.  Rather than using the mechanical E-Stop 
switch as an input and logically ANDing the external E-stop switch and 
the internal E-stop machine state, you should use the internal E-stop 
machine state as an output and use electronic hardware (relay logic) to 
AND the E-stop switch and the E-stop machine state to enable the spindle 
motion and the X/Y/Z motion.  To be clear, you're actually ANDing the 
non-E-stop conditions, or NANDing two E-stop signals.  However you want 
to say it, motion should only be possible when the PC based controller 
says it's OK to run, and when the E-stop switch says it's OK to run.

The issue is the reliability of computer hardware and software. These 
have greatly improved, but are still not up to the reliability standards 
of relays.

I like solid state relays, although E-Stop relays are usually clackity 
relays with mechanical contacts.

Consider using multiple E-stop switches if someone could be pinned by 
part of the machine.  Try think of all of the things that could go wrong 
and make sure someone could quickly reach an E-stop.

When wiring your E-stop circuit, make sure the E-stop switch contacts 
are closed when you want the machine to run, and open when the E-stop 
switch is activated.  That way, if there is any loose connection in your 
E-stop circuit, the wiring fault causes the machine to fail in the 
E-stopped condition.

The simplest E-stop wiring would cut power to the spindle motor and all 
of your stepper motor power supplies, even though the spindle could 
probably be actively stopped faster if left under power and commanded to 
stop rather than coasting to a stop.

Bruce





On 11/07/2014 02:46 PM, Joe Hildreth wrote:
> Hello everyone,
>
> I am sure these questions are asked all the time but I have found nothing 
> that really covers what I am looking for. (But maybe I am not too good with 
> the search.)
>
> I have built a CNC Gantry router based on the KRMx01 design from Kronos 
> Robotics. But instead of using the electronics and Mach3 he suggested, I am 
> using electronics, motors and Linux CNC.
>
> The basic machine is up and running and I am using it to cut more parts for 
> the machine. I am to the point now that I need to think E-stop, limit and 
> home switches, vacuum control (dust collection) and router PID.
>
> My setup is a C10 (cnc4pc) BOB, (4) CW230 stepper drivers, (2) 36vdc power 
> supplies (each feeding 2, CW230 drivers) and (1) 5vdc supply enabling the 
> BOB. The CW230 drivers do not have a charge pump or anything like that, 
> though they do have a pin called REST that according to the sparse 
> documentation says will allow the motor to free spin. (I guess it may be 
> considered an enable)
>
> Because I have a couple of teenage boys and a wife who have expressed an 
> interest in using the machine, I need to make sure it can be stopped in the 
> event something unplanned happened. Here is my thought and also where I need 
> some guidance on best practice or acceptable practice.
>
> 1) Connect external E-Stop to input pin on controller
> 2) Use HAL to logic glue the AXIS GUI estop and AXIS GUI Power button 
> together so that IF both E-Stops are on the closed position AND the power is 
> on in AXIS GUI THEN allow charge pump signal on output pin of BOB
> 3) Connect cnc4pc part C4 (charge pump) inputs to charge pump signal on the 
> corresponding output pin on the BOB. The output of the charge pump is a relay 
> with the choice of NO or NC contacts. If the charge pump frequency falls 
> above or below the operating threshhold, then use this output as a trigger.
> 4) Connect the output to (2) C8 (cnc4pc part number) AC relays with 5 volt 
> input to connect / disconnect the AC side of the (2) 36vdc power supplies 
> that power the CW230 stepper drivers.
>
> In my simple mind, this should provide the following safety feature.
>
> A) The machine will only run if both E-Stops (external E-Stop and AXIS GUI 
> E-stop) are in the closed positions AND the power button (AXIS GUI) is on. 
> Allowing the Charge pump signal to be generated on the output pin of the BOB 
> enabling the power to the motors through the Charge Pump and AC Relays.
>
> B) If either Estop is opened, then the Charge pump signal will be stopped 
> causing the power to the supplies to be cut by the AC Relays from the Charge 
> Pump.
>
> C) If the computer crashes and the LPT port is left in an unknown state, the 
> charge pump signal should be gone causing the power to the motors to be cut.
>
> D) Avoid any start up random signals to the LPT port being sent to the motors 
> because the drivers will not be powered up.
>
> Kind of long, but am I on the right track here. Just want to have a margin of 
> safety if my boys or wife is trying to use the machine.
>
> If you are interested, I have a detailed build of this machine, including 
> screen casts of LinuxCNC hybrid i

Re: [Emc-users] Unable to get Nvidia Graphic Card working with nvidia drivers .

[alex chiosso]

Thank you Kirk for your detailed explanation I will try your tips.
My cpu is an Intel dual core so isolcpu=1 should be the right one .

Alex
Il giorno 07/nov/2014 20:12, "John Alexander Stewart" 
ha scritto:

> Alex;
>
> I've made the isolcpu=1 modification but numbers are always pretty high
> > (6-65000 on both threads) but more stable as I can see.
> >
> >
> How many cores?  If two, the isolcpus=1 is correct; if four, or one or...
> it may not be.
>
> I modified Kent's "07_rtai" script to find the pae kernels; someone else
> (sorry, names
> are in the script) went through and worked out different cores and what
> worked well.
> IIRC his/her comments are in the wiki page and in the 07_rtai script.
>
> Just something to check; John.
>
> --
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Re: [Emc-users] A beginners question about E-Stop and Charge Pumps

[Joe Hildreth]

Bruce,

Thanks for taking the time to explain it to me.

So I can take this approach then:

1) Use the internal E-Stop as an output on the BOB (Use this as in input to my 
AND gate)
2) Use the external E-stop which is normally closed as the second input to my 
AND gate)
3) Use the output of the Charge pump signal from the BOB as the third input to 
the AND gate.

4) The output of the AND gate to drive the TTL inputs of my AC Relays to 
enable/disable power to the motors.

This way, I still have both E-Stops (Or additional ones by cascading E-stops) 
and the charge pump signal to rely on?

I could make a PC board for an AND gate with Vcc and ground in with a 
decoupling cap and just bring the inputs and out puts to screw terminals.  This 
way, it would be nice and modular, cheap and fit in any corner of my 
electronics drawer that slides in the computer rack.

My spindle is a Hitachi router, so not sure if it is even possible to brake.  
It will get wired to a SuperPID so that I can control on/off and motor speed 
via software.  I need to look at the documentation and see what I have 
available in terms of E-Stop control.  It may be that I have to treat it like 
the stepper driver power supplies.  I am just not there yet.  I still consider 
myself a newbie so am trying to take it in digestible BYTES.

As far as the external charge pump.  I am thinking that LinuxCNC will only 
generate the carrier frequency (charge pump signal) when it has control.  This 
way if the computer hangs or crashed I would at least have an additional level 
of safety.  Or am I just over thinking it?

Thanks again for your help.

Joe

- On Nov 7, 2014, at 2:35 PM, Bruce Layne linux...@thinkingdevices.com 
wrote:

> Hi Joe,
> 
> The industry preferred method of implementing an E-stop would be the
> opposite of what you propose.  Rather than using the mechanical E-Stop
> switch as an input and logically ANDing the external E-stop switch and
> the internal E-stop machine state, you should use the internal E-stop
> machine state as an output and use electronic hardware (relay logic) to
> AND the E-stop switch and the E-stop machine state to enable the spindle
> motion and the X/Y/Z motion.  To be clear, you're actually ANDing the
> non-E-stop conditions, or NANDing two E-stop signals.  However you want
> to say it, motion should only be possible when the PC based controller
> says it's OK to run, and when the E-stop switch says it's OK to run.
> 
> The issue is the reliability of computer hardware and software. These
> have greatly improved, but are still not up to the reliability standards
> of relays.
> 
> I like solid state relays, although E-Stop relays are usually clackity
> relays with mechanical contacts.
> 
> Consider using multiple E-stop switches if someone could be pinned by
> part of the machine.  Try think of all of the things that could go wrong
> and make sure someone could quickly reach an E-stop.
> 
> When wiring your E-stop circuit, make sure the E-stop switch contacts
> are closed when you want the machine to run, and open when the E-stop
> switch is activated.  That way, if there is any loose connection in your
> E-stop circuit, the wiring fault causes the machine to fail in the
> E-stopped condition.
> 
> The simplest E-stop wiring would cut power to the spindle motor and all
> of your stepper motor power supplies, even though the spindle could
> probably be actively stopped faster if left under power and commanded to
> stop rather than coasting to a stop.
> 
> Bruce

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Re: [Emc-users] A beginners question about E-Stop and Charge Pumps

[Joe Hildreth]

Bruce,

One more question.  If I wired it like my last email, then LinuxCNC would not 
have any clue that I hit the external E-Stop.  Would it be benifitial to bring 
the signal back in anyway, just to let the software know we killed it 
externally?  Otherwise, I imagine that the software will continue to send 
motion information and continue to plot like nothing ever happened.

Thanks,

Joe

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Re: [Emc-users] A beginners question about E-Stop and Charge Pumps

[Kirk Wallace]

While following this thread, I found these links:


http://madpenguin.ca/blog/2012/02/16/an-emergency-stop-circuit-with-emc2/

the above has a brocken link to here:
http://www.hs-compliance.com/uploaded/documents/THE%20EMERGENCY%20STOP%20-%202012%20ver%202.0.pdf

For spindles, Warner makes a magnetic release brake which brakes when 
power is cut:
http://www.altraliterature.com/pdfs/FB%20Series-Permanent%20Magnet%20Brakes.pdf

These fail to a safe condition. eBay can be a good source.

A little less fail-safe is braking an AC motor with a DC current:
http://www.homemetalshopclub.org/news/sep01/sep01.html

http://www.electrical4u.com/induction-motor-braking/

There should be a version for router motors.

-- 
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Re: [Emc-users] A beginners question about E-Stop and Charge Pumps

[Jack Coats]

Joe,

Your last request is what happens where you hit 'pause', e-stop is for
emergencies.  It should be used to keep from loosing a hand, or to
keep the equipment from tearing itself apart.  Pause is to stop in a
restartable manner.  The machine may have to finish a cut before it
can pause, but using e-stop means you are willing to lose the piece or
repair it if something is wrong.

I hope that helps.

... Jack


On Fri, Nov 7, 2014 at 3:35 PM, Joe Hildreth
 wrote:
> Bruce,
>
> One more question.  If I wired it like my last email, then LinuxCNC would not 
> have any clue that I hit the external E-Stop.  Would it be benifitial to 
> bring the signal back in anyway, just to let the software know we killed it 
> externally?  Otherwise, I imagine that the software will continue to send 
> motion information and continue to plot like nothing ever happened.
>
> Thanks,
>
> Joe
>
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Albert Einstein
"You don't manage people; you manage things. You lead people." -
Admiral Grace Hopper, USN
"Tell me and I forget. Teach me and I remember. Involve me and I
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Re: [Emc-users] A beginners question about E-Stop and Charge Pumps

[Joe Hildreth]

Jack,

Thank you.  I see your point.  Sometimes I get tunnel vision.  Would you 
recommend the external charge pump in the mix like I suggested?  I am thinking 
that this would just be an extra level of safety.  Am I correct?

Joe

- On Nov 7, 2014, at 4:07 PM, Jack Coats j...@coats.org wrote:

> Joe,
> 
> Your last request is what happens where you hit 'pause', e-stop is for
> emergencies.  It should be used to keep from loosing a hand, or to
> keep the equipment from tearing itself apart.  Pause is to stop in a
> restartable manner.  The machine may have to finish a cut before it
> can pause, but using e-stop means you are willing to lose the piece or
> repair it if something is wrong.
> 
> I hope that helps.
> 
> ... Jack
> 
> 
> On Fri, Nov 7, 2014 at 3:35 PM, Joe Hildreth
>  wrote:
>> Bruce,
>>
>> One more question.  If I wired it like my last email, then LinuxCNC would not
>> have any clue that I hit the external E-Stop.  Would it be benifitial to 
>> bring
>> the signal back in anyway, just to let the software know we killed it
>> externally?  Otherwise, I imagine that the software will continue to send
>> motion information and continue to plot like nothing ever happened.
>>
>> Thanks,
>>
>> Joe
>>
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> 
> 
> 
> --
>><> ... Jack
> 
> "Whatever you do, work at it with all your heart"... Colossians 3:23
> "Anyone who has never made a mistake, has never tried anything new." -
> Albert Einstein
> "You don't manage people; you manage things. You lead people." -
> Admiral Grace Hopper, USN
> "Tell me and I forget. Teach me and I remember. Involve me and I
> learn." - Ben Franklin
> 
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Re: [Emc-users] A beginners question about E-Stop and Charge Pumps

[Joe Hildreth]

Kirk,

Great information.  I am still reading it.  I wonder though, if a brake could 
be used with my router along side the PID.  You gave me some great info to chew 
on.  Thanks again.

Joe


- On Nov 7, 2014, at 4:05 PM, Kirk Wallace kwall...@wallacecompany.com 
wrote:

> While following this thread, I found these links:
> 
> 
> http://madpenguin.ca/blog/2012/02/16/an-emergency-stop-circuit-with-emc2/
> 
> the above has a brocken link to here:
> http://www.hs-compliance.com/uploaded/documents/THE%20EMERGENCY%20STOP%20-%202012%20ver%202.0.pdf
> 
> For spindles, Warner makes a magnetic release brake which brakes when
> power is cut:
> http://www.altraliterature.com/pdfs/FB%20Series-Permanent%20Magnet%20Brakes.pdf
> 
> These fail to a safe condition. eBay can be a good source.
> 
> A little less fail-safe is braking an AC motor with a DC current:
> http://www.homemetalshopclub.org/news/sep01/sep01.html
> 
> http://www.electrical4u.com/induction-motor-braking/
> 
> There should be a version for router motors.
> 
> --
> Kirk Wallace
> http://www.wallacecompany.com/machine_shop/
> http://www.wallacecompany.com/E45/
> 
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Re: [Emc-users] A beginners question about E-Stop and Charge Pumps

[Bruce Layne]

You shouldn't use integrated circuits to implement the AND logic. 
Instead, use relay logic.

The output from the BOB that represents the internal E-stop state in 
LinuxCNC is wired to a relay.  If the BOB can't source enough current to 
drive the relay, you might need to use a small relay to operate a larger 
relay, but you don't need a high current relay for the relay logic.  You 
only need a small "ice cube" relay and the BOB output should be able to 
drive it directly.  If you select a relay with normally open and 
normally closed (NO and NC) contacts, you can select the correct set of 
contacts as you wire it to negate any signals that may be an opposite 
logic state than you assumed. That's a handy feature for flexibility and 
can come in handy for future add-ons.  It's easy to make one wrong 
assumption about signal polarity and have the opposite of what you need 
at the final relay in the circuit, and having NO and NC contacts on your 
relay is never having to say DOH!

The logic relay that represents the LinuxCNC internal E-stop state is 
wired in series with any E-stop switches you installed.  That way, if 
you push any E-stop switch, or click the E-stop button in LinuxCNC, the 
machine goes into an E-stop state and all motion stops.  The signal that 
passes through the E-stop switches and your small relay contacts then 
operates a larger power relay that supplies power to all motion control 
(spindle, steppers, etc.). This power relay can have multiple sets of 
contacts, so each motion producing device can be controlled separately 
if they use different voltages.  A set of contacts can be used to 
control your Hitachi router.  Another can control the stepper motor 
powers supply or power supplies.

You can also include a set of contacts to control a digital signal that 
feeds back as an input to the BOB so LinuxCNC can determine that you 
pressed an E-stop switch, although for my simple machines like routers, 
I generally don't bother because that takes a bit of messing around in 
HAL, and I like being able to install a new copy of LinuxCNC, select a 
generic stepper gantry router configuration, tweak the machine limits 
and steps per inch, and Bob's your uncle. I don't plan on pushing the 
E-stop switch, and if I do, I don't mind if the program keeps running as 
long as the motion stops.  I'm going to reset everything, anyway.

Similarly, for a simple machine, you might skip the relay that 
externalizes the internal LinuxCNC E-stop state.  You'll probably press 
a physical E-stop switch on the machine, but clicking the E-stop button 
in LinuxCNC would still stop the motion even if it didn't generate a 
real E-stop.  The difference is, the motors would still be powered and 
would be holding position, potentially keeping the operator pinned.  If 
you trained everyone to ignore the E-stop button in LinuxCNC and push 
the E-stop mushroom head switch on the machine, it wouldn't be too much 
of a safety problem IMO.  If it's an emergency, the operator shouldn't 
be mouse clicking or trying to press hot keys on the keyboard, and I 
don't think they should be trusting any PC software, even if LinuxCNC is 
very robust.  I don't believe in software E-stops.

If I was wiring it, I'd probably use a solid state relay ($6 each or 
less on eBay) for each motion device I needed to control and use the 
E-stop signal to control them all.  I know they'd work for the 120VAC 
power for your Hitachi router and the DC power supplies that dive the 
stepper motors.  If I had any three phase devices, I'd use a three pole 
relay (actually, a motor starter) to ensure that all three phases were 
switch on and off at the same time.

If you do an online search for E-stop circuit, I'm sure you can find a 
lot of circuit diagrams that are wired as I'm describing.  There will be 
minor differences depending on the specifics of the machine hardware, 
but the basic concept is the same.  Use those as examples and draw 
something similar for your machine.

Good luck!


Bruce




On 11/07/2014 04:30 PM, Joe Hildreth wrote:
> Bruce,
>
> Thanks for taking the time to explain it to me.
>
> So I can take this approach then:
>
> 1) Use the internal E-Stop as an output on the BOB (Use this as in input to 
> my AND gate)
> 2) Use the external E-stop which is normally closed as the second input to my 
> AND gate)
> 3) Use the output of the Charge pump signal from the BOB as the third input 
> to the AND gate.
>
> 4) The output of the AND gate to drive the TTL inputs of my AC Relays to 
> enable/disable power to the motors.
>
> This way, I still have both E-Stops (Or additional ones by cascading E-stops) 
> and the charge pump signal to rely on?
>
> I could make a PC board for an AND gate with Vcc and ground in with a 
> decoupling cap and just bring the inputs and out puts to screw terminals.  
> This way, it would be nice and modular, cheap and fit in any corner of my 
> electronics drawer that slides in the computer rack.
>
> My spindle i

Re: [Emc-users] Off Topic: Shop Lighting

[Lee Lancaster]

They work pretty good but you have to watch out for the power supplies.  I
make light fixture housings for a company that uses those LED "fluorescent"
bulbs.  They have had quite a few fail because of bad caps in the power
supplies.  Other than that they are great.

On Fri, Nov 7, 2014 at 6:10 PM, Kirk Wallace 
wrote:

> This looks interesting, but I have no idea how well these dimmable T8
> LEDs work.
> http://www.ebay.com/itm/121227773225
>
> another option is to use a bunch of E26 screw base bulbs which are
> getting fairly cheap these days.
>
> --
> Kirk Wallace
> http://www.wallacecompany.com/machine_shop/
> http://www.wallacecompany.com/E45/
>
>
> --
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[Emc-users] Off Topic: Shop Lighting

[Kirk Wallace]

This looks interesting, but I have no idea how well these dimmable T8 
LEDs work.
http://www.ebay.com/itm/121227773225

another option is to use a bunch of E26 screw base bulbs which are 
getting fairly cheap these days.

-- 
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http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/

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Re: [Emc-users] A beginners question about E-Stop and Charge Pumps

[Joe Hildreth]

Bruce,

Thanks for the information.  You gave me quite a bit to chew on.  Having a 
computer and electronic background I tend to think of logic being implemented 
via discreetly or through a micro-controller.  I never really thought about 
relay logic.  I have never tried to implement a logic circuit with relays, so 
would have to look at some samples.  Off the top of my head it would seem that 
driving coils in series would be an AND and the same coils in parallel would be 
an OR.  But beyond that no clue really.

You said I shouldn't use IC to implement logic, but aside from the Y and !Y (NO 
and NC contacts) output logic why do you recommend against it?

Currently, I have 5Vdc, 36Vdc and 110Vac that I am dealing with.  Seeing that 
the 5Vdc power supply supplies my BOB, and other future devices, TTL logic just 
seemed natural.

I agree with you about the software E-Stop versus the Hard E-Stops.  I will 
insist to my Boys and wife that if SHTF, ALWAY hit the big red buttons!

Thanks again for all the support, advice, direction and resources.  I 
appreciate it.  I see I have a little reading on the subject to catch up on.

Regards,

Joe


- On Nov 7, 2014, at 4:34 PM, Bruce Layne linux...@thinkingdevices.com 
wrote:

> You shouldn't use integrated circuits to implement the AND logic.
> Instead, use relay logic.
> 
> The output from the BOB that represents the internal E-stop state in
> LinuxCNC is wired to a relay.  If the BOB can't source enough current to
> drive the relay, you might need to use a small relay to operate a larger
> relay, but you don't need a high current relay for the relay logic.  You
> only need a small "ice cube" relay and the BOB output should be able to
> drive it directly.  If you select a relay with normally open and
> normally closed (NO and NC) contacts, you can select the correct set of
> contacts as you wire it to negate any signals that may be an opposite
> logic state than you assumed. That's a handy feature for flexibility and
> can come in handy for future add-ons.  It's easy to make one wrong
> assumption about signal polarity and have the opposite of what you need
> at the final relay in the circuit, and having NO and NC contacts on your
> relay is never having to say DOH!
> 
> The logic relay that represents the LinuxCNC internal E-stop state is
> wired in series with any E-stop switches you installed.  That way, if
> you push any E-stop switch, or click the E-stop button in LinuxCNC, the
> machine goes into an E-stop state and all motion stops.  The signal that
> passes through the E-stop switches and your small relay contacts then
> operates a larger power relay that supplies power to all motion control
> (spindle, steppers, etc.). This power relay can have multiple sets of
> contacts, so each motion producing device can be controlled separately
> if they use different voltages.  A set of contacts can be used to
> control your Hitachi router.  Another can control the stepper motor
> powers supply or power supplies.
> 
> You can also include a set of contacts to control a digital signal that
> feeds back as an input to the BOB so LinuxCNC can determine that you
> pressed an E-stop switch, although for my simple machines like routers,
> I generally don't bother because that takes a bit of messing around in
> HAL, and I like being able to install a new copy of LinuxCNC, select a
> generic stepper gantry router configuration, tweak the machine limits
> and steps per inch, and Bob's your uncle. I don't plan on pushing the
> E-stop switch, and if I do, I don't mind if the program keeps running as
> long as the motion stops.  I'm going to reset everything, anyway.
> 
> Similarly, for a simple machine, you might skip the relay that
> externalizes the internal LinuxCNC E-stop state.  You'll probably press
> a physical E-stop switch on the machine, but clicking the E-stop button
> in LinuxCNC would still stop the motion even if it didn't generate a
> real E-stop.  The difference is, the motors would still be powered and
> would be holding position, potentially keeping the operator pinned.  If
> you trained everyone to ignore the E-stop button in LinuxCNC and push
> the E-stop mushroom head switch on the machine, it wouldn't be too much
> of a safety problem IMO.  If it's an emergency, the operator shouldn't
> be mouse clicking or trying to press hot keys on the keyboard, and I
> don't think they should be trusting any PC software, even if LinuxCNC is
> very robust.  I don't believe in software E-stops.
> 
> If I was wiring it, I'd probably use a solid state relay ($6 each or
> less on eBay) for each motion device I needed to control and use the
> E-stop signal to control them all.  I know they'd work for the 120VAC
> power for your Hitachi router and the DC power supplies that dive the
> stepper motors.  If I had any three phase devices, I'd use a three pole
> relay (actually, a motor starter) to ensure that all three phases were
> switch on and off at the same time.
> 
> 

Re: [Emc-users] Off Topic: Shop Lighting

[andy pugh]

On 7 November 2014 23:10, Kirk Wallace  wrote:
> This looks interesting, but I have no idea how well these dimmable T8
> LEDs work.
> http://www.ebay.com/itm/121227773225

These make good machine lights:
http://www.ikea.com/gb/en/catalog/products/00169635/
(they come with a 4V supply but don't mind 5V from the machine supply)

-- 
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto

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Re: [Emc-users] A beginners question about E-Stop and Charge Pumps

[Gene Heskett]

On Friday 07 November 2014 18:58:19 Joe Hildreth did opine
And Gene did reply:
> Bruce,
> 
> Thanks for the information.  You gave me quite a bit to chew on. 
> Having a computer and electronic background I tend to think of logic
> being implemented via discreetly or through a micro-controller.  I
> never really thought about relay logic.  I have never tried to
> implement a logic circuit with relays, so would have to look at some
> samples.  Off the top of my head it would seem that driving coils in
> series would be an AND and the same coils in parallel would be an OR. 
> But beyond that no clue really.
> 
> You said I shouldn't use IC to implement logic, but aside from the Y
> and !Y (NO and NC contacts) output logic why do you recommend against
> it?
> 
> Currently, I have 5Vdc, 36Vdc and 110Vac that I am dealing with. 
> Seeing that the 5Vdc power supply supplies my BOB, and other future
> devices, TTL logic just seemed natural.
> 
> I agree with you about the software E-Stop versus the Hard E-Stops.  I
> will insist to my Boys and wife that if SHTF, ALWAY hit the big red
> buttons!
> 
> Thanks again for all the support, advice, direction and resources.  I
> appreciate it.  I see I have a little reading on the subject to catch
> up on.
> 
> Regards,
> 
> Joe

Joe; One thing I would think needs stressed, is when doing the relay logic 
stuff, it should all be dependent on an energized relay, so that if a 
power bump comes along, even a 50 millisecond one, all relays should de-
energize and stay that way so there is protection when the power comes 
back up.  Having the machine, with a slowing or stopped spindle, suddenly 
get jerked 1/4" sideways, probably snapping off a $20+ dollar solid 
carbide mill, or chewing on your hand if you reach for it, isn't something 
you want to happen.  Using power to hold the relays closed when its in 
normal operation is a relatively small cost for that sort of safety.

Some would call it sensible too. ;-)

> - On Nov 7, 2014, at 4:34 PM, Bruce Layne 
linux...@thinkingdevices.com wrote:
> > You shouldn't use integrated circuits to implement the AND logic.
> > Instead, use relay logic.
> > 
> > The output from the BOB that represents the internal E-stop state in
> > LinuxCNC is wired to a relay.  If the BOB can't source enough current
> > to drive the relay, you might need to use a small relay to operate a
> > larger relay, but you don't need a high current relay for the relay
> > logic.  You only need a small "ice cube" relay and the BOB output
> > should be able to drive it directly.  If you select a relay with
> > normally open and normally closed (NO and NC) contacts, you can
> > select the correct set of contacts as you wire it to negate any
> > signals that may be an opposite logic state than you assumed. That's
> > a handy feature for flexibility and can come in handy for future
> > add-ons.  It's easy to make one wrong assumption about signal
> > polarity and have the opposite of what you need at the final relay
> > in the circuit, and having NO and NC contacts on your relay is never
> > having to say DOH!
> > 
> > The logic relay that represents the LinuxCNC internal E-stop state is
> > wired in series with any E-stop switches you installed.  That way, if
> > you push any E-stop switch, or click the E-stop button in LinuxCNC,
> > the machine goes into an E-stop state and all motion stops.  The
> > signal that passes through the E-stop switches and your small relay
> > contacts then operates a larger power relay that supplies power to
> > all motion control (spindle, steppers, etc.). This power relay can
> > have multiple sets of contacts, so each motion producing device can
> > be controlled separately if they use different voltages.  A set of
> > contacts can be used to control your Hitachi router.  Another can
> > control the stepper motor powers supply or power supplies.
> > 
> > You can also include a set of contacts to control a digital signal
> > that feeds back as an input to the BOB so LinuxCNC can determine
> > that you pressed an E-stop switch, although for my simple machines
> > like routers, I generally don't bother because that takes a bit of
> > messing around in HAL, and I like being able to install a new copy
> > of LinuxCNC, select a generic stepper gantry router configuration,
> > tweak the machine limits and steps per inch, and Bob's your uncle. I
> > don't plan on pushing the E-stop switch, and if I do, I don't mind
> > if the program keeps running as long as the motion stops.  I'm going
> > to reset everything, anyway.
> > 
> > Similarly, for a simple machine, you might skip the relay that
> > externalizes the internal LinuxCNC E-stop state.  You'll probably
> > press a physical E-stop switch on the machine, but clicking the
> > E-stop button in LinuxCNC would still stop the motion even if it
> > didn't generate a real E-stop.  The difference is, the motors would
> > still be powered and would be holding position, potentially keeping
> > 

[Emc-users] off topic:shop lighting

[richshoop]

I suggest checking out www.1000bulbs.com for the replacement T-8 LED tubes. I 
like the 5600K color, the lack of humming from the ballast is very nice as 
well, helps concentration, especially in small spaces. Very little heat, no 120 
hz flickering. Models are available in 2ft, 4ft, and 8ft, with or without 
diffusers. Not very expensive. I mounted one under the Y axis arm of my router. 
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[Emc-users] Inkscape ??

[Gene Heskett]

Greetings;

The inkscape program can load and display this .eps file, looking about 
like the photographs of the parts it will make.

However, any of the operations I would like it to, like edge detection as 
a first step toward the generation of the required gcode paths just sits 
there doing nothing for an hour or more after telling it to go do it.  And 
while the buttons are ghosted, indicating its busy, the whole thing slowly 
falls off the front page of an htop session watching the system.

Is there some preliminary operation I have to do to select the area to 
scan before the potrace like utility can do its thing?

I also have all of gcodetools installed, so I have a fairly lengthy list 
of things that can be done under the extensions menu, but they also appear 
to be inoperable, but do tie the inkscape session up, requiring I do a 
sudo kill inkscape to stop that, but again it it using zero cpu when its 
hung.

So I an puzzled.  This is the inkscape V.48 in the 10.04.4 LTS repo's.

Cheers, Gene Heskett
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US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS

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Re: [Emc-users] A beginners question about E-Stop and Charge Pumps

[Bruce Layne]

Joe,

In the words of Roseanne Rosannadanna, you ask a lot of questions! :-)

You don't wire the coils of relays in series for relay logic.  The coil 
voltage is selected to match the voltage you want to use to activate 
it... 5VDC, 12VDC, 24VDC, 120VAC, etc.  You wire the relay contacts in 
series to implement an AND function (as is the case with your E-stop 
switches and a relay that mirrors the status of the internal LinuxCNC 
E-stop signal, and any other relay controlled signal you want to 
generate an E-stop).  You'd wire the contacts from different relays in 
parallel to implement an OR function.

The reason I suggested using relay logic for this application is 
simplicity.   You'll need a relay to externalize the internal E-stop 
status anyway, so just wire the contacts in series with any E-stop 
switches you have and you're finished.  Why add any discrete logic ICs 
to that?  It's needless complexity.

I'm generally a big fan of implementing logic in software or firmware.  
I've replaced a lot of goofy 1950s technology relay logic where relays 
and electromechanical timers were used in the 1990s because someone 
didn't know how to use a PLC or (my favorite) a one dollar RISC 
microcontroller.  But if you already have the relay and that's all you 
need, why add an Arduino to drive the relay?

If you search for "E-stop circuit" and look at the images, you'll see 
lots of examples and it'll make sense.

There are also some standard circuits for input power disconnects (I 
don't go to that formality for my small CNC machines) with 
fuses/breakers, ON and OFF pushbutton switches that latch the ON 
condition until the OFF button is pressed, etc.


Bruce





On 11/07/2014 06:58 PM, Joe Hildreth wrote:
> Bruce,
>
> Thanks for the information.  You gave me quite a bit to chew on.  Having a 
> computer and electronic background I tend to think of logic being implemented 
> via discreetly or through a micro-controller.  I never really thought about 
> relay logic.  I have never tried to implement a logic circuit with relays, so 
> would have to look at some samples.  Off the top of my head it would seem 
> that driving coils in series would be an AND and the same coils in parallel 
> would be an OR.  But beyond that no clue really.
>
> You said I shouldn't use IC to implement logic, but aside from the Y and !Y 
> (NO and NC contacts) output logic why do you recommend against it?
>
> Currently, I have 5Vdc, 36Vdc and 110Vac that I am dealing with.  Seeing that 
> the 5Vdc power supply supplies my BOB, and other future devices, TTL logic 
> just seemed natural.
>
> I agree with you about the software E-Stop versus the Hard E-Stops.  I will 
> insist to my Boys and wife that if SHTF, ALWAY hit the big red buttons!
>
> Thanks again for all the support, advice, direction and resources.  I 
> appreciate it.  I see I have a little reading on the subject to catch up on.
>
> Regards,
>
> Joe
>
>
>


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[Emc-users] Friction Re: New refit

[Gregg Eshelman]

On 11/7/2014 8:39 AM, dave wrote:

> IIUC cast to cast friction chews up a lot of power. My small mill is
> somewhat like a BP. SEM MT30H servo motors at about 100 v.
>
> http://igor.chudov.com/projects/Bridgeport-Series-II-Interact-2-CNC-Mill/_Manuals/SEM-MT_Technical_Data_Manual.pdf
>
> I used to drive them with 165 vdc and Servo Dynamics BR-1525 amps. Max
> speeds were in the range of 100 ipm. I now have backed off and use a 100
> vdc source and it is very comfortable at 30 ipm. I intend to change the
> gearing to see if I can get a bit more speed but that means a major
> change in driving the X axis. Haven't found a roundtoit for that task.
>
> On the other hand the Mazak V5 with similar motors and 10X the mass
> but the same power supply and polymer ways will do 400 ipm with ease.

Is there a way lube with molybdenum disulphide in it?


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