Re: [Emc-users] Those $16 Chinese TTS tool holders

[MC Cason]

On 11/05/2015 09:31 PM, Gene Heskett wrote:
> On Thursday 05 November 2015 21:55:00 MC Cason wrote:
>
>> Gene,
>>
>> I uploaded some pictures to Flickr, to show you how I have mine
>> done:
>> https://www.flickr.com/photos/46689581@N03/albums/72157660780465122
>>
> Neat. But I'll need to come up with a more compact mounting for a bunch
> of them to run a tool changer.  Perf-board likely will be about ideal
> but I'll need to find space on that size of perf-board for at least a 5
> pack of those.  I can still conserve I/O pins on a 5i25 by useing 3 bits
> as an address generator and 3 more for enable/step/dir.  I don't see
> more than one motor moving at a time, but with conventional wiring, a 5
> motor setup is 15 output pins.  I think I can beat that down to 6 if
> only one motor at a time is to be moving.  3 to address which motor gets
> the signals, and 3 for enable,dir,step.  All dir and step can be shared,
> but the 3 bit address only enables the one addressed.

   I don't have a tool changer, so my comment may not work, but why not 
have LinuxCNC send a signal out to a microcontroller, let the 
microcontroller do it's job, and then have the microcontroller send a 
signal back to LinuxCNC to tell it when it's done?  I do not consider 
myself a programmer, but I'm still able to make the Arduino software 
give me what I want.

   If a stock Arduino board doesn't have enough pins, the Teensy series 
of boards have more pins available.  For me, $20.00 for the 3.2, and 
$12.00 for the LC, was fairly cheap, considering what other boards on 
the market cost.  Both of them use the Arduino software (with addon 
sofware) as it's IDE.
https://www.pjrc.com/teensy/teensy31.html
https://www.pjrc.com/teensy/teensyLC.html

   This is how the RepRap guys mount their boards:
http://reprap.org/wiki/A4988_vs_DRV8825_Chinese_Stepper_Driver_Boards

   The perf board is just for prototyping, and I'm a couple of mods 
beyond the one in the pictures.  When I'm finally satisfied, I will have 
a few circuit boards made.  I know two people here locally that are 
interested in their own boards.  $48.00 for 3 from OSH Park, or $47.00 
for 10 directly from China.  Decisions, decisions...



>
> But I'm going to be out of pocket for a bit, tomorrow I get the brakes
> redone on my GMC, If amazon manages to deliver Saturday, I'll be busy
> putting our local AM'er back on the air at full power.  Monday I am
> scheduled for a pair of saddle block shots in whats left of my back, and
> if amazon doesn't deliver till Monday, I'll have to see if I can finish
> that transmitter after I get back from the shots.  Might not be able to
> pull that off till after the shots have taken effect.  I was informed
> I'd need a driver.  Last time I drove myself home.  But that was 2 years
> ago.  As a friend was fond of saying, I'm not the man I once was, even
> once. ;-)
>
> Thanks, MC Cason.
>
> Cheers, Gene Heskett

   I know what you mean about having back problems.  I've been disabled 
for 14 years now, and live in constant pain.  I bought all of my machine 
tools to keep me from going crazy.


-- 
MC Cason
Eagle3D - Created by Matthias Weißer
github.com/mcason/Eagle3D



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[Emc-users] OT - Newsgroup email

[Roland Jollivet]

Probably the usual. It's a Yahoo email. I'm reading this from me spam box.
It also says'

"*Why is this message in Spam?* It has a from address in yahoo.com but has
failed yahoo.com's required tests for authentication.  Learn more"


Regards
Roland


On 6 November 2015 at 05:08, MC Cason  wrote:

>Is it normal to NOT get your own emails back when posting to this
> list?  My settings on the mailserver have "Receive your own post to the
> list?" set to "Yes"
>
>  I'm subscribed to over a dozen lists, and this is the only one that
> it doesn't work on.
>
> --
> MC Cason
> Eagle3D - Created by Matthias Weißer
> github.com/mcason/Eagle3D
>
>
>
>
> --
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Re: [Emc-users] Those $16 Chinese TTS tool holders

[Condit Alan]

Gene,

The Polulu drivers use 0.10in pin spacing by 0.5in. spacing on the rows. Don’t 
ask me how I know.

Alan
> From: Gene Heskett 
> Date: November 5, 2015 at 6:37:50 PM PST
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Those $16 Chinese TTS tool holders
> 
> 
> On Thursday 05 November 2015 20:57:10 MC Cason wrote:
> 
>> On 11/05/2015 12:22 PM, Gene Heskett wrote:
>>> On Thursday 05 November 2015 12:39:47 andy pugh wrote:
 On 5 November 2015 at 17:04, Gene Heskett  wrote:
> Yeah, I know, a miss-cue in a contact will probably blow the
> driver, but ice-cubes seem pretty dependable. All this switching
> would of course take place with the drivers enable line off, so
> when it becomes enabled the relay has had time to close. 
> Conversely, at stop time, leave it enabled for long enough to
> bring the motor to a solid stop, then disable, and drop the relay
> 100 ms later.
> 
> Comments on this idea?
 
 Drivers suitable for a Nema11 motor are probably cheaper than the
 relay, so this might be a false economy.
 http://www.ebay.com/itm/1PCS-A4988-Stepper-Motor-Driver-Module-3D-P
 rin ter-Polulu-StepStick-RAMPS-RepRap-/221921771119
>>> 
>>> Thats ok, but that driver bothers me, how about this one?
>>> 
>>> >> -printer-RAMPS1-4-RepRap-StepStick-/201114247831?hash=item2ed357e297:
>>> g:gy8AAOSwWnFV94cl>
>>> 
>>> Which seems to be a higher voltage tolerance version.
>>> 
>>> But, does anyone supply a motherboard that would mount at least 5 of
>>> those?  My google-foo seems to be broken, but if these are used in
>>> 3d printers, I'd certainly expect to see a method to make a whole
>>> bank of them useable.  4 wide, maybe even 5?
>>> 
>>> Cheers, Gene Heskett
>> 
>>   Gene, I just built a electronic rotary table with one like one of
>> those, but I got it here:
>> https://www.pololu.com/category/154/drv8825-stepper-motor-driver-carri
>> ers-high-current
>> 
>>   I didn't think that $6.80/each in a 5 pack, was too bad,
>> considering what other options would've cost.  It's being controlled
>> by a Teensy 3.2 (ARM Cortex M4),  and It's controlling a NEMA 23
>> Stepper, and It just barely gets warm.  Current is set to 1A.
>> 
>>   Pololu's website has a truth table that shows how the microstepping
>> pins get connected.  On my teensy 3.2, I have the microstepping pins
>> tied to 3 digital pins, so I can adjust microstepping in software. 
>> The code is still WIP, and I'm still tying all of the individual
>> pieces together, but on the bench it's working nicely.
> 
> Looks like it could be socketed into 2 adjacent 16 pin dip sockets.
> That, for the most part, solves the "bank of them" problem.  Now if I 
> could find a suitable motor that wasn't $40/copy.  Still looking on that 
> point.
> 
> Thanks. $8/copy with the header pins already soldered in seems 
> reasonable.
> 
> 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 

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Re: [Emc-users] Those $16 Chinese TTS tool holders

[Gene Heskett]

On Thursday 05 November 2015 21:55:00 MC Cason wrote:

> Gene,
>
>I uploaded some pictures to Flickr, to show you how I have mine
> done:
> https://www.flickr.com/photos/46689581@N03/albums/72157660780465122
>
Neat. But I'll need to come up with a more compact mounting for a bunch 
of them to run a tool changer.  Perf-board likely will be about ideal 
but I'll need to find space on that size of perf-board for at least a 5 
pack of those.  I can still conserve I/O pins on a 5i25 by useing 3 bits 
as an address generator and 3 more for enable/step/dir.  I don't see 
more than one motor moving at a time, but with conventional wiring, a 5 
motor setup is 15 output pins.  I think I can beat that down to 6 if 
only one motor at a time is to be moving.  3 to address which motor gets 
the signals, and 3 for enable,dir,step.  All dir and step can be shared, 
but the 3 bit address only enables the one addressed.

But I'm going to be out of pocket for a bit, tomorrow I get the brakes 
redone on my GMC, If amazon manages to deliver Saturday, I'll be busy 
putting our local AM'er back on the air at full power.  Monday I am 
scheduled for a pair of saddle block shots in whats left of my back, and 
if amazon doesn't deliver till Monday, I'll have to see if I can finish 
that transmitter after I get back from the shots.  Might not be able to 
pull that off till after the shots have taken effect.  I was informed 
I'd need a driver.  Last time I drove myself home.  But that was 2 years 
ago.  As a friend was fond of saying, I'm not the man I once was, even 
once. ;-)

Thanks, MC Cason.

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 

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[Emc-users] OT - Newsgroup email

[MC Cason]

   Is it normal to NOT get your own emails back when posting to this 
list?  My settings on the mailserver have "Receive your own post to the 
list?" set to "Yes"

 I'm subscribed to over a dozen lists, and this is the only one that 
it doesn't work on.

-- 
MC Cason
Eagle3D - Created by Matthias Weißer
github.com/mcason/Eagle3D



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Re: [Emc-users] Those $16 Chinese TTS tool holders

[MC Cason]

Gene,

   I uploaded some pictures to Flickr, to show you how I have mine done:
https://www.flickr.com/photos/46689581@N03/albums/72157660780465122


On 11/05/2015 08:37 PM, Gene Heskett wrote:
> On Thursday 05 November 2015 20:57:10 MC Cason wrote:
>
>> On 11/05/2015 12:22 PM, Gene Heskett wrote:
>>> On Thursday 05 November 2015 12:39:47 andy pugh wrote:
 On 5 November 2015 at 17:04, Gene Heskett  wrote:
> Yeah, I know, a miss-cue in a contact will probably blow the
> driver, but ice-cubes seem pretty dependable. All this switching
> would of course take place with the drivers enable line off, so
> when it becomes enabled the relay has had time to close.
> Conversely, at stop time, leave it enabled for long enough to
> bring the motor to a solid stop, then disable, and drop the relay
> 100 ms later.
>
> Comments on this idea?
 Drivers suitable for a Nema11 motor are probably cheaper than the
 relay, so this might be a false economy.
 http://www.ebay.com/itm/1PCS-A4988-Stepper-Motor-Driver-Module-3D-P
 rin ter-Polulu-StepStick-RAMPS-RepRap-/221921771119
>>> Thats ok, but that driver bothers me, how about this one?
>>>
>>> >> -printer-RAMPS1-4-RepRap-StepStick-/201114247831?hash=item2ed357e297:
>>> g:gy8AAOSwWnFV94cl>
>>>
>>> Which seems to be a higher voltage tolerance version.
>>>
>>> But, does anyone supply a motherboard that would mount at least 5 of
>>> those?  My google-foo seems to be broken, but if these are used in
>>> 3d printers, I'd certainly expect to see a method to make a whole
>>> bank of them useable.  4 wide, maybe even 5?
>>>
>>> Cheers, Gene Heskett
>> Gene, I just built a electronic rotary table with one like one of
>> those, but I got it here:
>> https://www.pololu.com/category/154/drv8825-stepper-motor-driver-carri
>> ers-high-current
>>
>> I didn't think that $6.80/each in a 5 pack, was too bad,
>> considering what other options would've cost.  It's being controlled
>> by a Teensy 3.2 (ARM Cortex M4),  and It's controlling a NEMA 23
>> Stepper, and It just barely gets warm.  Current is set to 1A.
>>
>> Pololu's website has a truth table that shows how the microstepping
>> pins get connected.  On my teensy 3.2, I have the microstepping pins
>> tied to 3 digital pins, so I can adjust microstepping in software.
>> The code is still WIP, and I'm still tying all of the individual
>> pieces together, but on the bench it's working nicely.
> Looks like it could be socketed into 2 adjacent 16 pin dip sockets.
> That, for the most part, solves the "bank of them" problem.  Now if I
> could find a suitable motor that wasn't $40/copy.  Still looking on that
> point.
>
> Thanks. $8/copy with the header pins already soldered in seems
> reasonable.
>
> Cheers, Gene Heskett


-- 
MC Cason
Eagle3D - Created by Matthias Weißer
github.com/mcason/Eagle3D



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Re: [Emc-users] Those $16 Chinese TTS tool holders

[Gene Heskett]

On Thursday 05 November 2015 20:57:10 MC Cason wrote:

> On 11/05/2015 12:22 PM, Gene Heskett wrote:
> > On Thursday 05 November 2015 12:39:47 andy pugh wrote:
> >> On 5 November 2015 at 17:04, Gene Heskett  wrote:
> >>> Yeah, I know, a miss-cue in a contact will probably blow the
> >>> driver, but ice-cubes seem pretty dependable. All this switching
> >>> would of course take place with the drivers enable line off, so
> >>> when it becomes enabled the relay has had time to close. 
> >>> Conversely, at stop time, leave it enabled for long enough to
> >>> bring the motor to a solid stop, then disable, and drop the relay
> >>> 100 ms later.
> >>>
> >>> Comments on this idea?
> >>
> >> Drivers suitable for a Nema11 motor are probably cheaper than the
> >> relay, so this might be a false economy.
> >> http://www.ebay.com/itm/1PCS-A4988-Stepper-Motor-Driver-Module-3D-P
> >>rin ter-Polulu-StepStick-RAMPS-RepRap-/221921771119
> >
> > Thats ok, but that driver bothers me, how about this one?
> >
> >  >-printer-RAMPS1-4-RepRap-StepStick-/201114247831?hash=item2ed357e297:
> >g:gy8AAOSwWnFV94cl>
> >
> > Which seems to be a higher voltage tolerance version.
> >
> > But, does anyone supply a motherboard that would mount at least 5 of
> > those?  My google-foo seems to be broken, but if these are used in
> > 3d printers, I'd certainly expect to see a method to make a whole
> > bank of them useable.  4 wide, maybe even 5?
> >
> > Cheers, Gene Heskett
>
>Gene, I just built a electronic rotary table with one like one of
> those, but I got it here:
> https://www.pololu.com/category/154/drv8825-stepper-motor-driver-carri
>ers-high-current
>
>I didn't think that $6.80/each in a 5 pack, was too bad,
> considering what other options would've cost.  It's being controlled
> by a Teensy 3.2 (ARM Cortex M4),  and It's controlling a NEMA 23
> Stepper, and It just barely gets warm.  Current is set to 1A.
>
>Pololu's website has a truth table that shows how the microstepping
> pins get connected.  On my teensy 3.2, I have the microstepping pins
> tied to 3 digital pins, so I can adjust microstepping in software. 
> The code is still WIP, and I'm still tying all of the individual
> pieces together, but on the bench it's working nicely.

Looks like it could be socketed into 2 adjacent 16 pin dip sockets.
That, for the most part, solves the "bank of them" problem.  Now if I 
could find a suitable motor that wasn't $40/copy.  Still looking on that 
point.

Thanks. $8/copy with the header pins already soldered in seems 
reasonable.

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 

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Re: [Emc-users] Emc-users Digest, Vol 115, Issue 6

[tjmarch]

- Original Message -
> This will get you start with linuxmint-17.2-xfce-32bit read
linuxcnc_readme all the way through and use setup.sh script. No need
to compile new kernel

>> Enjoy
>> Tim March

John & Chris
In readme file during ./configure I used

./configure --htmldir=/home/`whoami`/Documents
--enable-build-documentation=html

The pointer for htmldir=/home/`whoami`/Documents did not work 

HTML Document were created but are in

/home//linuxcnc_source/docs/html/

right click on file index.html and Send to-->Desktop (Create Link)
then rename link to something that makes better sense than index

Sorry about extra message,(forgot to attach file) and mistake in
configure

Tim March

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Re: [Emc-users] Those $16 chinese TTS tool holders

[MC Cason]

On 11/05/2015 12:22 PM, Gene Heskett wrote:
> On Thursday 05 November 2015 12:39:47 andy pugh wrote:
>
>> On 5 November 2015 at 17:04, Gene Heskett  wrote:
>>> Yeah, I know, a miss-cue in a contact will probably blow the driver,
>>> but ice-cubes seem pretty dependable. All this switching would of
>>> course take place with the drivers enable line off, so when it
>>> becomes enabled the relay has had time to close.  Conversely, at
>>> stop time, leave it enabled for long enough to bring the motor to a
>>> solid stop, then disable, and drop the relay 100 ms later.
>>>
>>> Comments on this idea?
>> Drivers suitable for a Nema11 motor are probably cheaper than the
>> relay, so this might be a false economy.
>> http://www.ebay.com/itm/1PCS-A4988-Stepper-Motor-Driver-Module-3D-Prin
>> ter-Polulu-StepStick-RAMPS-RepRap-/221921771119
> Thats ok, but that driver bothers me, how about this one?
>
> 
>
> Which seems to be a higher voltage tolerance version.
>
> But, does anyone supply a motherboard that would mount at least 5 of
> those?  My google-foo seems to be broken, but if these are used in 3d
> printers, I'd certainly expect to see a method to make a whole bank of
> them useable.  4 wide, maybe even 5?
>
> Cheers, Gene Heskett

   Gene, I just built a electronic rotary table with one like one of 
those, but I got it here:
https://www.pololu.com/category/154/drv8825-stepper-motor-driver-carriers-high-current

   I didn't think that $6.80/each in a 5 pack, was too bad, considering 
what other options would've cost.  It's being controlled by a Teensy 3.2 
(ARM Cortex M4),  and It's controlling a NEMA 23 Stepper, and It just 
barely gets warm.  Current is set to 1A.

   Pololu's website has a truth table that shows how the microstepping 
pins get connected.  On my teensy 3.2, I have the microstepping pins 
tied to 3 digital pins, so I can adjust microstepping in software.  The 
code is still WIP, and I'm still tying all of the individual pieces 
together, but on the bench it's working nicely.


-- 
MC Cason
Eagle3D - Created by Matthias Weißer
github.com/mcason/Eagle3D



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Re: [Emc-users] linuxcnc-dev in Synaptic when using uspace (was Carousel Component)

[Jeff Epler]

You need to look for the properly named package:

linuxcnc-uspace-dev - PC based motion controller for real-time Linux

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Re: [Emc-users] Emc-users Digest, Vol 115, Issue 6

[tjmarch]

- Original Message -
>> To: emc-users@lists.sourceforge.net [1] >> From: j...@gnipsel.com [2]
>> Date: Mon, 2 Nov 2015 14:26:43 -0600 >> Subject: [Emc-users] Linux
Mint >> I have Linux Mint 17.2 and like the interface, are there any
>> instructions on how to patch the kernel for real time? I ran uname
-r >> and it reports 3.16.0-38 generic in 17.2. Cinnamon and Mate seem
to be >> the best for me, I could not figure out where the turn off
button was in >> XFCE lol. Finally found it and the name choice was
poor. >> I've done a lot of things on computers but building or
patching a kernel >> is not on that list so any advice is appreciated.
>> Thanks >> JT  

>> I would be interested in this too. >> I use RTAI >> Chris M

John & Chris
This will get you start with linuxmint-17.2-xfce-32bit read
linuxcnc_readme all the way through and use setup.sh script. No need
to compile new kernel

Enjoy
Tim March

 

Links:
--
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[2] mailto:j...@gnipsel.com



linuxmint.tar.gz
Description: application/gzip
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Re: [Emc-users] Emc-users Digest, Vol 115, Issue 6

[tjmarch]

-

- Original Message -
>> To: emc-users@lists.sourceforge.net [1] >> From: j...@gnipsel.com [2]
>> Date: Mon, 2 Nov 2015 14:26:43 -0600 >> Subject: [Emc-users] Linux
Mint >> I have Linux Mint 17.2 and like the interface, are there any
>> instructions on how to patch the kernel for real time? I ran uname
-r >> and it reports 3.16.0-38 generic in 17.2. Cinnamon and Mate seem
to be >> the best for me, I could not figure out where the turn off
button was in >> XFCE lol. Finally found it and the name choice was
poor. >> I've done a lot of things on computers but building or
patching a kernel >> is not on that list so any advice is appreciated.
>> Thanks >> JT  

>> I would be interested in this too. >> I use RTAI >> Chris M

Jon & Chris
This will get you start with linuxmint-17.2-xfce-32bit read
linuxcnc_readme all the way through and use setup.sh script. No need
to compile new kernel

Enjoy
Tim March 

Links:
--
[1] mailto:emc-users@lists.sourceforge.net
[2] mailto:j...@gnipsel.com

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Re: [Emc-users] linuxcnc-dev in Synaptic when using uspace (was Carousel Component)

[Gene Heskett]

On Thursday 05 November 2015 14:30:36 Rick Lair wrote:

> Not to get too far off topic on my original thread, just wondering
> what I need to do to get linuxcnc-dev in the Synaptic Package manager.
> I am running debian wheezy using 2.7-uspace, and need to be able to
> use halcompile to modify the carousel component. Linuxcnc-dev is not
> in the package manager, and I am not sure what I should insert for the
> deb to facilitate this.

Your /etc/apt/sources.list.d/linuxcnc.list needs to contain:

gene@coyote:~/linuxcnc$ cat /etc/apt/sources.list.d/linuxcnc.list
deb http://linuxcnc.org/ wheezy 2.7-uspace base 2.6
deb-src http://linuxcnc.org/ wheezy 2.7-uspace base 2.6

I believe the deb-src line is missing, or has a '#' as its first 
character.



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 

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Re: [Emc-users] linuxcnc-dev in Synaptic when using uspace (was Carousel Component)

[Karlsson & Wang]

I downloaded the source and then figured out which packages wher needed for 
compilation then running "configure" script.

Nicklas Karlsson



On Thu, 5 Nov 2015 14:30:36 -0500
Rick Lair  wrote:

> Not to get too far off topic on my original thread, just wondering what 
> I need to do to get linuxcnc-dev in the Synaptic Package manager. I am 
> running debian wheezy using 2.7-uspace, and need to be able to use 
> halcompile to modify the carousel component. Linuxcnc-dev is not in the 
> package manager, and I am not sure what I should insert for the deb to 
> facilitate this.
> 
> 
> 
> -- 
> 
> Thanks
> 
> 
> Rick Lair
> Superior Roll & Turning LLC
> 399 East Center Street
> Petersburg MI, 49270
> PH: 734-279-1831
> FAX: 734-279-1166
> www.superiorroll.com
> 
> 
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Re: [Emc-users] Looping and axis

[Ralph Stirling]

OK, I found my problem.  Simply a matter of caps.
wrong -> (axis,STOP)
right -> (AXIS,stop)

It helps to pay attention to the docs...

This still doesn't fix my beef with M66 timeout, of
course, but I am much relieved that I can at least
load programs with indefinite termination.

Thanks again everyone.

-- Ralph

From: Jeff Epler [jep...@unpythonic.net]
Sent: Thursday, November 05, 2015 5:10 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Looping and axis

http://linuxcnc.org/docs/html/gui/axis.html#axis:preview-control

use a special comment recognized by AXIS (and by other programs sharing
the same library for preview plot generation) to terminate the
generation of the preview at any point you choose.

Jeff

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[Emc-users] linuxcnc-dev in Synaptic when using uspace (was Carousel Component)

[Rick Lair]

Not to get too far off topic on my original thread, just wondering what 
I need to do to get linuxcnc-dev in the Synaptic Package manager. I am 
running debian wheezy using 2.7-uspace, and need to be able to use 
halcompile to modify the carousel component. Linuxcnc-dev is not in the 
package manager, and I am not sure what I should insert for the deb to 
facilitate this.



-- 

Thanks


Rick Lair
Superior Roll & Turning LLC
399 East Center Street
Petersburg MI, 49270
PH: 734-279-1831
FAX: 734-279-1166
www.superiorroll.com


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Re: [Emc-users] Those $16 chinese TTS tool holders

[Gene Heskett]

On Thursday 05 November 2015 12:39:47 andy pugh wrote:

> On 5 November 2015 at 17:04, Gene Heskett  wrote:
> > Yeah, I know, a miss-cue in a contact will probably blow the driver,
> > but ice-cubes seem pretty dependable. All this switching would of
> > course take place with the drivers enable line off, so when it
> > becomes enabled the relay has had time to close.  Conversely, at
> > stop time, leave it enabled for long enough to bring the motor to a
> > solid stop, then disable, and drop the relay 100 ms later.
> >
> > Comments on this idea?
>
> Drivers suitable for a Nema11 motor are probably cheaper than the
> relay, so this might be a false economy.
> http://www.ebay.com/itm/1PCS-A4988-Stepper-Motor-Driver-Module-3D-Prin
>ter-Polulu-StepStick-RAMPS-RepRap-/221921771119

Thats ok, but that driver bothers me, how about this one?



Which seems to be a higher voltage tolerance version.

But, does anyone supply a motherboard that would mount at least 5 of 
those?  My google-foo seems to be broken, but if these are used in 3d 
printers, I'd certainly expect to see a method to make a whole bank of 
them useable.  4 wide, maybe even 5?

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 

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Re: [Emc-users] Those $16 chinese TTS tool holders

[andy pugh]

On 5 November 2015 at 17:04, Gene Heskett  wrote:
> Yeah, I know, a miss-cue in a contact will probably blow the driver, but
> ice-cubes seem pretty dependable. All this switching would of course
> take place with the drivers enable line off, so when it becomes enabled
> the relay has had time to close.  Conversely, at stop time, leave it
> enabled for long enough to bring the motor to a solid stop, then
> disable, and drop the relay 100 ms later.
>
> Comments on this idea?

Drivers suitable for a Nema11 motor are probably cheaper than the
relay, so this might be a false economy.
http://www.ebay.com/itm/1PCS-A4988-Stepper-Motor-Driver-Module-3D-Printer-Polulu-StepStick-RAMPS-RepRap-/221921771119

-- 
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[Emc-users] Those $16 chinese TTS tool holders

[Gene Heskett]

Greetings all;

They arrived today, and the first thing of note is that the 1.5" diameter 
section with a tool holder groove in it, is a much shorter, no groove, 
cylinder thats about 2 thou bigger than the TTS holder.  There is no 
chamfer at the top of the 3/4 diameter section, so it would 
not "auto-center" as the spindle descends over it in an ATC situation.

Overall, its nominally 1/2" shorter.  As to that being a problem, I 
changed all 3 tools to the new holders but have not corrected the top of 
the board Z "seed" in my gcode yet.  They do look to be well built with 
a potential exception of the eccentricity of the extraction groove 
engagement, its obviously not as pronounced an offcenter compared to the 
real TTS holder.

More news later after I've had a chance to actually use them.

With the space considerations, it looks as if I'll need to rethink the 
tool changer into one with a transfer arm to move the tool to/from the 
spindle, probably with 2 sides, one to accept the tool being dropped, 
and one to grab a tool from the wheel and bring it to the spindle. 
Putting the removed tool back in the correct pocket doesn't look like an 
insurmountable problem, just one I'll likely pester someone about. ;-)
 
But I can see the need for an additional motor to rotate the transfer 
arm.

fleabay has some 99/1 geared nema 11 steppers, pretty small but they're 
about $40 a copy.  Can anyone comment on those?  Since there would not 
be more than one motor running at any one time in my vision of this, I 
am inclined to rig a rack of 4PST ice cubes, closing the relay to that 
motors coils with about 100 ms make delay before enabling the driver, 
and a similar stop steps, disable 100 ms later, then drop the relay so 
that I could drive all the motors from one driver.

Yeah, I know, a miss-cue in a contact will probably blow the driver, but 
ice-cubes seem pretty dependable. All this switching would of course 
take place with the drivers enable line off, so when it becomes enabled 
the relay has had time to close.  Conversely, at stop time, leave it 
enabled for long enough to bring the motor to a solid stop, then 
disable, and drop the relay 100 ms later.

Comments on this idea?

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 

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Re: [Emc-users] Looping and axis

[Karlsson & Wang]

I have done programming with compiled languages and parsed row by row then 
executing. A main advantage of a compiler is the errors captured before 
execution. A button to check syntax, maximum velocity and maximum acceleration 
would probably be good.

Nicklas Karlsson



> my bad,
> I thought Linuxcnc required preparsing the entire program,
> almost simulating the entire motion to know bounds checks,
> and to respect velocity and acceleration constraints,
> and the blending was calculated...
> all this before attempting any motion.
> 
> I thought that nothing else would happen until this step was completed.
> (and it couldnt be completed if the task was infinite...  by definition )
> 
> Thats good news that the problem is only the gui preview.
> thx
> TomP tjtr33

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Re: [Emc-users] Looping and axis

[TJoseph Powderly]

my bad,
I thought Linuxcnc required preparsing the entire program,
almost simulating the entire motion to know bounds checks,
and to respect velocity and acceleration constraints,
and the blending was calculated...
all this before attempting any motion.

I thought that nothing else would happen until this step was completed.
(and it couldnt be completed if the task was infinite...  by definition )

Thats good news that the problem is only the gui preview.
thx
TomP tjtr33



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Re: [Emc-users] Looping and axis

[Jeff Epler]

http://linuxcnc.org/docs/html/gui/axis.html#axis:preview-control

use a special comment recognized by AXIS (and by other programs sharing
the same library for preview plot generation) to terminate the
generation of the preview at any point you choose.

Jeff

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Re: [Emc-users] Desktops and OS's (Simplest possible)

[Karlsson & Wang]

The basic needs should be: Kernel with real time scheduler, X11 server for 
display unless it is run remotely, linuxcnc. I guess some more would be needed 
to get it started but not very much.

Usually there are plenty of space on harddrive so any ordinary distrubution 
could be used with out any real drawback. Only reason I could find to use 
simplest possible would be for cheap mass produced devices.

I have however discovered an STM32F407 ran a control loop perfectly with a 
frequency of 40kHz with around 30% CPU load but with an old ordinary higher 
clock frequency computer I can't run at 1kHz reliable. Modern GOOD for real 
time system micro controllers usually have nested interrupt controller with 
priority but I do not know if this is possible on an ordinary computer.

I guess effort could be best spent on kernel and in particular possibility to 
reduce priority of interrupts for ordinary tasks like disk I/O, graphics, other 
non real time I/O or non real time interrupts. Then clock cycles at "high" 
priority are free to use for real time tasks I expect good real time 
performance will come almost by itself.


Nicklas Karlsson



> Way back at the start of this email, someone was talking about different
> DEs. I personally have been running Bodhi linux, an Ubuntu derived distro,
> for a few years. The lead Dev recently posted a blog about installing
> moksha, an Enlightenment derivative, on Debian Jessie. Enlightenment does
> things differently, but, it is quite light on resources. I believe
> something like lxde is comparable.
> 
> On Wed, Nov 4, 2015 at 10:02 PM, Todd Zuercher 
> wrote:
> 
> > I've been running quite large carving and engraving g-code files directly
> > off a NAS share for quite some time without many problems (before that it
> > was on a Novel server, that was a little more problematic).  The only
> > problems were usually caused by major network glitches that often resulted
> > in taking down the whole Linuxcnc client (but I can't say that has happened
> > since switching to the NAS share).
> >
> > - Original Message -
> > From: "Dave Cole" 
> > To: emc-users@lists.sourceforge.net
> > Sent: Wednesday, November 4, 2015 12:10:26 PM
> > Subject: Re: [Emc-users] Desktops and OS's
> >
> > Second try...  I think that my Avast Antivirus is battling with Gmail's
> > security certificates and I lost :-( .
> >
> > Do you run the Gcode file off the NAS server directly or do you copy the
> > file to the local machine.
> > I thought there was a problem doing that reliably with LinuxCNC.
> > Something to do with network latency when reading the file which would
> > cause LinuxCNC to fault.
> >
> > Dave
> >
> >
> > On 11/4/2015 8:35 AM, Jim Craig wrote:
> > > I have a raid NAS that I send all of my gcode to. Then I open it
> > > directly from the NAS into LinuxCNC. Then I don't have to worry about
> > > what machine has the latest code etc. The latest is always on the NAS.
> > > And it it is backed up.
> > >
> > > I am going to have to see if I can get my machine computer to print to
> > > my network printer. That will be nice. Have not been able to get it to
> > > work so far.
> > >
> > > Thanks for the tips.
> > >
> > > Jim
> > >
> > > On 11/4/2015 7:27 AM, John Thornton wrote:
> > >> If he is doing that from a Windoze computer you can configure the right
> > >> click Send To for each machine so it's a one click op to send the file.
> > >>
> > >> JT
> > >>
> > >> On 11/4/2015 7:16 AM, Rick Lair wrote:
> > >>> It was an absolute requirement that I got that to work, probably like
> > >>> yours, we now have multiple machines in the shop running Linuxcnc, and
> > >>> thumb drives are easy to lose, so I have all the machines networked
> > >>> together, so the guy in the office that makes the programs, can drop
> > the
> > >>> finished g code program right into the nc_files folder in the
> > respective
> > >>> machine, right from his desk.
> > >>>
> > >>>
> > >>> Rick
> > >>>
> > >>>
> > >>>
> > >>> On 11/4/2015 8:09 AM, John Thornton wrote:
> >  Sweet, and it works! What a PITA to have to do this just to get an OS
> > to
> >  do basic things. I'm still hoping someone will chime in that has
> > built a
> >  real time kernel for Linux Mint so I can try that.
> > 
> >  JT
> > 
> >  On 11/4/2015 6:55 AM, Rick Lair wrote:
> > > Now you should be able to right click on the the folder icon you want
> > > tot share, see the "Share" tab, and be able to click down through and
> > > setup folder sharing on your network for that respective folder,
> > >
> > >
> > >
> > > On 11/4/2015 7:51 AM, John Thornton wrote:
> > >> Hi Rick,
> > >>
> > >> I followed the directions for adding folder sharing to Thunar but
> > don't
> > >> see any difference. What is is supposed to do?
> > >>
> > >> JT
> > >>
> > >> On 11/3/2015 9:59 AM, Rick Lair wrote:
> > >>> John,
> > >>>
> > >>> Attached are some of my notes that

Re: [Emc-users] Looping and axis

[John Thornton]

As a self taught programmer, cook, engineer, machinist, welder, jack of 
all trades master of a few I could never see me wanting to use an 
infinite loop for anything CNC related. I would have my input run the 
subroutine program.

I understand this is normal for a PLC (I program them as well) to scan 
the ladder forever waiting on an input so maybe you need to use 
ClassicLadder instead.

JT

On 11/4/2015 7:57 PM, Ralph Stirling wrote:
> I use Linuxcnc for machine automation in my manufacturing lab,
> and am bothered by the difficulty of creating "infinite loops".
> I often want to have a machine sit an indefinite amount of time
> until a sensor signals it is time to make the next move.  M66
> lets me wait for a sensor, but requires a timeout value.  I don't
> want a timeout value.
>
> In addition to this, I would like to be able to have WHILE [1]
> infinite loops, with a conditional to break out based on some
> input.  Axis hangs loading a program with WHILE [1] in it,
> even if I have (axis,HOLD) or (axis,STOP) at the beginning.
>
> Anybody else wanted to do this?  Anybody find a way to?
>
> Thanks,
> -- Ralph
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Re: [Emc-users] Desktops and OS's

[Kyle Kerr]

Way back at the start of this email, someone was talking about different
DEs. I personally have been running Bodhi linux, an Ubuntu derived distro,
for a few years. The lead Dev recently posted a blog about installing
moksha, an Enlightenment derivative, on Debian Jessie. Enlightenment does
things differently, but, it is quite light on resources. I believe
something like lxde is comparable.

On Wed, Nov 4, 2015 at 10:02 PM, Todd Zuercher 
wrote:

> I've been running quite large carving and engraving g-code files directly
> off a NAS share for quite some time without many problems (before that it
> was on a Novel server, that was a little more problematic).  The only
> problems were usually caused by major network glitches that often resulted
> in taking down the whole Linuxcnc client (but I can't say that has happened
> since switching to the NAS share).
>
> - Original Message -
> From: "Dave Cole" 
> To: emc-users@lists.sourceforge.net
> Sent: Wednesday, November 4, 2015 12:10:26 PM
> Subject: Re: [Emc-users] Desktops and OS's
>
> Second try...  I think that my Avast Antivirus is battling with Gmail's
> security certificates and I lost :-( .
>
> Do you run the Gcode file off the NAS server directly or do you copy the
> file to the local machine.
> I thought there was a problem doing that reliably with LinuxCNC.
> Something to do with network latency when reading the file which would
> cause LinuxCNC to fault.
>
> Dave
>
>
> On 11/4/2015 8:35 AM, Jim Craig wrote:
> > I have a raid NAS that I send all of my gcode to. Then I open it
> > directly from the NAS into LinuxCNC. Then I don't have to worry about
> > what machine has the latest code etc. The latest is always on the NAS.
> > And it it is backed up.
> >
> > I am going to have to see if I can get my machine computer to print to
> > my network printer. That will be nice. Have not been able to get it to
> > work so far.
> >
> > Thanks for the tips.
> >
> > Jim
> >
> > On 11/4/2015 7:27 AM, John Thornton wrote:
> >> If he is doing that from a Windoze computer you can configure the right
> >> click Send To for each machine so it's a one click op to send the file.
> >>
> >> JT
> >>
> >> On 11/4/2015 7:16 AM, Rick Lair wrote:
> >>> It was an absolute requirement that I got that to work, probably like
> >>> yours, we now have multiple machines in the shop running Linuxcnc, and
> >>> thumb drives are easy to lose, so I have all the machines networked
> >>> together, so the guy in the office that makes the programs, can drop
> the
> >>> finished g code program right into the nc_files folder in the
> respective
> >>> machine, right from his desk.
> >>>
> >>>
> >>> Rick
> >>>
> >>>
> >>>
> >>> On 11/4/2015 8:09 AM, John Thornton wrote:
>  Sweet, and it works! What a PITA to have to do this just to get an OS
> to
>  do basic things. I'm still hoping someone will chime in that has
> built a
>  real time kernel for Linux Mint so I can try that.
> 
>  JT
> 
>  On 11/4/2015 6:55 AM, Rick Lair wrote:
> > Now you should be able to right click on the the folder icon you want
> > tot share, see the "Share" tab, and be able to click down through and
> > setup folder sharing on your network for that respective folder,
> >
> >
> >
> > On 11/4/2015 7:51 AM, John Thornton wrote:
> >> Hi Rick,
> >>
> >> I followed the directions for adding folder sharing to Thunar but
> don't
> >> see any difference. What is is supposed to do?
> >>
> >> JT
> >>
> >> On 11/3/2015 9:59 AM, Rick Lair wrote:
> >>> John,
> >>>
> >>> Attached are some of my notes that I have found to be working in
> >>> regards to sharing over the network on Debian.
> >>>
> >>> You may have already tried these, but this is what I have found.
> >>>
> >>> Rick
> >>>
> >>>
> >>>
> >>> On 11/3/2015 10:44 AM, John Thornton wrote:
>  Samba is installed...
> 
>  On 11/3/2015 9:26 AM, andy pugh wrote:
> > On 3 November 2015 at 15:19, John Thornton 
> wrote:
> >> Networking is also hosed up on my Debian computers and try as
> >> I might I can't share files as freely around my LAN with the
> Debian
> >> computers.
> > You nay need to install Samba, it isn't there by default. I
> don't know
> > if Avahi is or not.
> >
> 
> --
> 
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Re: [Emc-users] Looping and axis

[Kyle Kerr]

The piss poor programmer in me bristles at the thought of you wanting to
break from an infinite loop. :P I would consider
flag = 1
While (flag)
  if (we want to break free)
flag = 0

On Thu, Nov 5, 2015 at 5:24 AM, andy pugh  wrote:

> On 5 November 2015 at 01:57, Ralph Stirling
>  wrote:
> > I use Linuxcnc for machine automation in my manufacturing lab,
> > and am bothered by the difficulty of creating "infinite loops".
> > I often want to have a machine sit an indefinite amount of time
> > until a sensor signals it is time to make the next move.
>
> The problem is entirely with the graphical preview. If you don't need
> the graphical preview then using one of the simpler GUIs might be an
> answer.
> (tklinuxcnc, for example).
>
> Does you process need G-code at all? You might want to consider a
> GUI-free G-code-free solution just using HAL or HAL and ClassicLadder.
>
> A GladeVCP Panel and a HAL file can be a very adaptable and useful
> control system.
>
> --
> atp
> If you can't fix it, you don't own it.
> http://www.ifixit.com/Manifesto
>
>
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Re: [Emc-users] Looping and axis

[andy pugh]

On 5 November 2015 at 01:57, Ralph Stirling
 wrote:
> I use Linuxcnc for machine automation in my manufacturing lab,
> and am bothered by the difficulty of creating "infinite loops".
> I often want to have a machine sit an indefinite amount of time
> until a sensor signals it is time to make the next move.

The problem is entirely with the graphical preview. If you don't need
the graphical preview then using one of the simpler GUIs might be an
answer.
(tklinuxcnc, for example).

Does you process need G-code at all? You might want to consider a
GUI-free G-code-free solution just using HAL or HAL and ClassicLadder.

A GladeVCP Panel and a HAL file can be a very adaptable and useful
control system.

-- 
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http://www.ifixit.com/Manifesto

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Re: [Emc-users] Looping and axis

[Andrew]

5 лист. 2015 03:59 "Ralph Stirling"  пише:
>
> I use Linuxcnc for machine automation in my manufacturing lab,
> and am bothered by the difficulty of creating "infinite loops".
> I often want to have a machine sit an indefinite amount of time
> until a sensor signals it is time to make the next move.  M66
> lets me wait for a sensor, but requires a timeout value.  I don't
> want a timeout value.
>
> In addition to this, I would like to be able to have WHILE [1]
> infinite loops, with a conditional to break out based on some
> input.  Axis hangs loading a program with WHILE [1] in it,
> even if I have (axis,HOLD) or (axis,STOP) at the beginning.
>
> Anybody else wanted to do this?  Anybody find a way to?
>

I would try to use an external input as a looping condition. So that it
exits when the input is not active.
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