Re: [Emc-users] BeagleBone Image Available

[Mark Wendt]

On Fri, Sep 6, 2013 at 1:14 PM, Kirk Wallace wrote:

> On 09/06/2013 10:05 AM, Kirk Wallace wrote:
> > On 09/06/2013 09:32 AM, Mark Wendt wrote:
> >
> > ... snip
> >> You did say you were running VNC, correct?  If so, check post #2 and #4.
> >
> > ... snip
> >
> > I installed tightvnc on the LinuxCNC PC.
> >
> > For fun, I tried running glxgears through VNC and it failed.
> > "
> > Xlib: extension "GLX" missing on display ":1.0"
> > Error: couldn't get an RGB, Double-buffered visual
> > "
> >
>
> This seems to have fixed it:
> "
> sudo apt-get install libgl1-mesa-swx11
> "
>
> --
> Kirk Wallace
> http://www.wallacecompany.com/machine_shop/
> http://www.wallacecompany.com/E45/
>


Excellent!  I figured it was missing libs or something like that.

Mark
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Re: [Emc-users] BeagleBone Image Available

[John Prentice (FS)]

Greetings

Charles - thanks for all the work on this. The install (via the Windows
route) went very well except for my issued Linux on the BBB complaining
about the "verbose" switch in the wget call for downloading the bootloader.
I edited this out of the shell-script and the SD card setup was fine.

LinuxCNC/Axis comes up as advertised when using an HDMI cable and monitor. 

Now I am going to build an prototype cape to do voltage level changing to
get step/dir signals out and  machine status and limit switches in via a D25
connector. I am going to start configuration using the BeBoPr HAL and INI.

Can someone please help me understand how the hal_pru_generic driver/comp,
called with a number of stepgens= and pwmgens=, ends up mapping the
generated signals to  hardware pins on the BBB headers (or chip)? Similarly
how does the hal_bb_gpio mapping work?

TIA and apologies if I am missing something obvious.

John Prentice

> On 09/02/2013 03:38 PM, Charles Steinkuehler wrote:
>> I have a new version of the MachineKit image for running LinuxCNC on 
>> a BeagleBone available:
>>
>> Image:
>> http://bb-lcnc.blogspot.com/p/machinekit_16.html
>>
>> Announcement:
>> http://bb-lcnc.blogspot.com/2013/09/new-machinekit-image-available.ht
>> ml
>>
>> This is a fairly significant change from the previous versions, as I 
>> am now building the kernel fully from source (pulling in the required 
>> Xenomai code from git) and I have switched to the 
>> unified-build-candidate branch of LinuxCNC (which is going to become
2.6?).


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Re: [Emc-users] LinuxCNC Integrator meeting Germany?

[alex chiosso]

Hi Christian .
I would like to be to your nice workshop .
The opportunity seems to be unique for European LinuxCNC users.
Germany seem to be centre of the Europe !!!
I'm trying to do my best to be present at the meeting .
Can you list one or more possible accomodations close to your workshop ?
I will appreciate.
Thank you.

Alex


On Sun, Sep 1, 2013 at 2:55 PM, Christian Stöveken <
christian.stoeve...@gmail.com> wrote:

> Looking forward to meeting you all:
>
> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?LinuxCNC_Integrator_Meeting_2013_Germany
>
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Re: [Emc-users] BeagleBone Image Available

[Kirk Wallace]

On 09/07/2013 03:52 AM, Mark Wendt wrote:
> On Fri, Sep 6, 2013 at 1:14 PM, Kirk Wallace
> wrote:
>
>> On 09/06/2013 10:05 AM, Kirk Wallace wrote:
>>> On 09/06/2013 09:32 AM, Mark Wendt wrote:
>>>
>>> ... snip
 You did say you were running VNC, correct?  If so, check post
 #2 and #4.
>>>
>>> ... snip
>>>
>>> I installed tightvnc on the LinuxCNC PC.
>>>
>>> For fun, I tried running glxgears through VNC and it failed. "
>>> Xlib: extension "GLX" missing on display ":1.0" Error: couldn't
>>> get an RGB, Double-buffered visual "
>>>
>>
>> This seems to have fixed it: " sudo apt-get install
>> libgl1-mesa-swx11 "
>>
>> -- Kirk Wallace http://www.wallacecompany.com/machine_shop/
>> http://www.wallacecompany.com/E45/
>>
>
>
> Excellent!  I figured it was missing libs or something like that.
>
> Mark
... snip

libgl1-mesa-swx11 looks like it is the software version of OpenGL 
rendering and removes the hardware version, libgl1-mesa-glx.
http://packages.debian.org/sid/libgl1-mesa-swx11

It may be that libgl1-mesa-glx is not compatible with a VCN link, or 
that VNC needs to be configured for my particular setup. I'm not sure 
how to approach the problem yet, or if it resides with the host or remote.

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

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Re: [Emc-users] BeagleBone Image Available

[Gene Heskett]

On Saturday 07 September 2013 11:06:08 Kirk Wallace did opine:

> On 09/07/2013 03:52 AM, Mark Wendt wrote:
> > On Fri, Sep 6, 2013 at 1:14 PM, Kirk Wallace
> > 
> > wrote:
> >> On 09/06/2013 10:05 AM, Kirk Wallace wrote:
> >>> On 09/06/2013 09:32 AM, Mark Wendt wrote:
> >>> 
> >>> ... snip
> >>> 
>  You did say you were running VNC, correct?  If so, check post
>  #2 and #4.
> >>> 
> >>> ... snip
> >>> 
> >>> I installed tightvnc on the LinuxCNC PC.
> >>> 
> >>> For fun, I tried running glxgears through VNC and it failed. "
> >>> Xlib: extension "GLX" missing on display ":1.0" Error: couldn't
> >>> get an RGB, Double-buffered visual "
> >> 
> >> This seems to have fixed it: " sudo apt-get install
> >> libgl1-mesa-swx11 "
> >> 
> >> -- Kirk Wallace http://www.wallacecompany.com/machine_shop/
> >> http://www.wallacecompany.com/E45/
> > 
> > Excellent!  I figured it was missing libs or something like that.
> > 
> > Mark
> 
> ... snip
> 
> libgl1-mesa-swx11 looks like it is the software version of OpenGL
> rendering and removes the hardware version, libgl1-mesa-glx.
> http://packages.debian.org/sid/libgl1-mesa-swx11
> 
> It may be that libgl1-mesa-glx is not compatible with a VCN link, or
> that VNC needs to be configured for my particular setup. I'm not sure
> how to approach the problem yet, or if it resides with the host or
> remote.

You may recall that I had to install that in order for the camera (and 
camview stuff) to work with axis.  It appears the hardware version couldn't 
do the pipeing redirects because while it said in the setup screen that 
data was flowing at x frames per second, it never got to the screen.

I have not yet made a mount for the camera as this one doesn't have that 
nice cylindrical shape that would have fit in a 30mm scope mounting ring.  
I am considering and alu angle mount, machined away so the lens can see 
thru it as there is not another face of its over sized case that is flat 
and square to the front face.  It will take me remembering to get a length 
of 1", .125" thick, alu angle when I am next near Tractor Supply.

Its update rate on screen is also something on the order of 2 to 3 seconds, 
boringly slow.  I assume its the huge disparity and the data decimation 
needed between the 640x480 needed for the axis window (and further shrunk 
to fit the actual screen resolution at whatever scale axis is presently 
using), and a camera whose native output is around 2700x2300 as its a full 
10 megapixel camera.  Raw pictures from it are stunningly sharp and about 
20 fps.

It seems to me this data destruction could be done much more efficiently by 
just taking the 640x480 out of the center of its F.O.V. & ditching the 
rest.  Or am I missing a switch value in the initial setup.  It is 
currently preserving the cameras whole F.O.V. while reducing the data rate 
to 640x480.  I could also get 1/4" closer to the spindle centerline IF the 
flip module could turn it 90 degrees.  That is of course part of the delay 
as its at least 2 full frames delay to do that flip.

Any help in either of those regards would be appreciated, a lot.

Cheers, Gene
-- 
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 soap, ballot, jury, and ammo. Please use in that order."
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My web page:  should be up!

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Re: [Emc-users] BeagleBone Image Available

[Kirk Wallace]

On 09/07/2013 06:18 AM, John Prentice (FS) wrote:

... snip
> Can someone please help me understand how the hal_pru_generic driver/comp,
> called with a number of stepgens= and pwmgens=, ends up mapping the
> generated signals to  hardware pins on the BBB headers (or chip)? Similarly
> how does the hal_bb_gpio mapping work?

... snip
  I grep'd "gpio" on the BBB in
/home/linuxcnc/linuxcnc/configs/ARM/BeagleBone/BeBoPr-Bridge/*

and got:
http://www.wallacecompany.com/machine_shop/LinuxCNC/grep_gpio.txt

I haven't taken any time to look at this yet, but maybe page 49 here 
might help:
http://www.farnell.com/datasheets/1685587.pdf

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

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Re: [Emc-users] LinuxCNC Integrator meeting Germany?

[Sven Wesley]

I happen to know that Christian is travelling a few days. These are the
places I've found when investigating the same.

This hotel seems quite low rated and is close to the workshop.
http://www.hotelbb.de/en/stuttgart-city
This hostel is about 1½-2 km away from the workshop (according to Google
maps).
http://stuttgart-neckarpark.jugendherberge-bw.de
And this place (with nice reviews) is close too, about the same distance as
the hostel.
http://www.gaestehausstuttgart.de/

Regards,
Sven


2013/9/7 alex chiosso 

> Hi Christian .
> I would like to be to your nice workshop .
> The opportunity seems to be unique for European LinuxCNC users.
> Germany seem to be centre of the Europe !!!
> I'm trying to do my best to be present at the meeting .
> Can you list one or more possible accomodations close to your workshop ?
> I will appreciate.
> Thank you.
>
> Alex
>
>
> On Sun, Sep 1, 2013 at 2:55 PM, Christian Stöveken <
> christian.stoeve...@gmail.com> wrote:
>
> > Looking forward to meeting you all:
> >
> >
> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?LinuxCNC_Integrator_Meeting_2013_Germany
> >
> >
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Re: [Emc-users] LinuxCNC Integrator meeting Germany?

[alex chiosso]

Hi Sven.
Thank you for your quick reply.
The first one (very nice) is it quite expensive (single room starting from
Euro 162,00).
The second one is good maybe for students .
The third one seem to be ok (room price is quite cheap) except for the
common bathroom.
Only the Twin room is available with bathroom included.
A good starting point (it is only for 2 night for me) so I can adapt myself
.

Any news about the time schedule of the meeting ?

Thank you again for the useful advice.

Alex




On Sat, Sep 7, 2013 at 5:59 PM, Sven Wesley  wrote:

> I happen to know that Christian is travelling a few days. These are the
> places I've found when investigating the same.
>
> This hotel seems quite low rated and is close to the workshop.
> http://www.hotelbb.de/en/stuttgart-city
> This hostel is about 1½-2 km away from the workshop (according to Google
> maps).
> http://stuttgart-neckarpark.jugendherberge-bw.de
> And this place (with nice reviews) is close too, about the same distance as
> the hostel.
> http://www.gaestehausstuttgart.de/
>
> Regards,
> Sven
>
>
> 2013/9/7 alex chiosso 
>
> > Hi Christian .
> > I would like to be to your nice workshop .
> > The opportunity seems to be unique for European LinuxCNC users.
> > Germany seem to be centre of the Europe !!!
> > I'm trying to do my best to be present at the meeting .
> > Can you list one or more possible accomodations close to your workshop ?
> > I will appreciate.
> > Thank you.
> >
> > Alex
> >
> >
> > On Sun, Sep 1, 2013 at 2:55 PM, Christian Stöveken <
> > christian.stoeve...@gmail.com> wrote:
> >
> > > Looking forward to meeting you all:
> > >
> > >
> >
> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?LinuxCNC_Integrator_Meeting_2013_Germany
> > >
> > >
> >
> --
> > > Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more!
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> > technologies
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Re: [Emc-users] LinuxCNC Integrator meeting Germany?

[alex chiosso]

Hi Sven.
Sorry to say I'm wrong.
The first one is ok  I made a mistake with the site reservation
simulation.
This option seems to be the best one for me.

Thank you so much.

Alex


On Sat, Sep 7, 2013 at 6:25 PM, alex chiosso  wrote:

> Hi Sven.
> Thank you for your quick reply.
> The first one (very nice) is it quite expensive (single room starting from
> Euro 162,00).
> The second one is good maybe for students .
> The third one seem to be ok (room price is quite cheap) except for the
> common bathroom.
> Only the Twin room is available with bathroom included.
> A good starting point (it is only for 2 night for me) so I can adapt
> myself .
>
> Any news about the time schedule of the meeting ?
>
> Thank you again for the useful advice.
>
> Alex
>
>
>
>
> On Sat, Sep 7, 2013 at 5:59 PM, Sven Wesley  wrote:
>
>> I happen to know that Christian is travelling a few days. These are the
>> places I've found when investigating the same.
>>
>> This hotel seems quite low rated and is close to the workshop.
>> http://www.hotelbb.de/en/stuttgart-city
>> This hostel is about 1½-2 km away from the workshop (according to Google
>> maps).
>> http://stuttgart-neckarpark.jugendherberge-bw.de
>> And this place (with nice reviews) is close too, about the same distance
>> as
>> the hostel.
>> http://www.gaestehausstuttgart.de/
>>
>> Regards,
>> Sven
>>
>>
>> 2013/9/7 alex chiosso 
>>
>> > Hi Christian .
>> > I would like to be to your nice workshop .
>> > The opportunity seems to be unique for European LinuxCNC users.
>> > Germany seem to be centre of the Europe !!!
>> > I'm trying to do my best to be present at the meeting .
>> > Can you list one or more possible accomodations close to your workshop ?
>> > I will appreciate.
>> > Thank you.
>> >
>> > Alex
>> >
>> >
>> > On Sun, Sep 1, 2013 at 2:55 PM, Christian Stöveken <
>> > christian.stoeve...@gmail.com> wrote:
>> >
>> > > Looking forward to meeting you all:
>> > >
>> > >
>> >
>> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?LinuxCNC_Integrator_Meeting_2013_Germany
>> > >
>> > >
>> >
>> --
>> > > Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more!
>> > > Discover the easy way to master current and previous Microsoft
>> > technologies
>> > > and advance your career. Get an incredible 1,500+ hours of
>> step-by-step
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>> >
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Re: [Emc-users] BeagleBone Image Available

[Charles Steinkuehler]

On 9/7/2013 8:18 AM, John Prentice (FS) wrote:
> Greetings
> 
> Can someone please help me understand how the hal_pru_generic driver/comp,
> called with a number of stepgens= and pwmgens=, ends up mapping the
> generated signals to  hardware pins on the BBB headers (or chip)? Similarly
> how does the hal_bb_gpio mapping work?
> 
> TIA and apologies if I am missing something obvious.

There are far too many pin naming schemes for the BeagleBone, including
two new ones used by the LinuxCNC Beaglebone code.

Short answer:

Read the code (sorry!)


Medium answer:

The PRU code uses an integer value that equals the kernel GPIO number
plus 32 (so that zero means "don't twiddle *ANY* pins!").  The values
are also extended, and what would be the non-existing GPIO bank 4 means
"Use the PRU direct I/O pins".

The hal_bb_gpio pin numbers is:

1xx = P8
2xx = P9
 xx = connector pin number


Long Answer:

I really need to make a blog page about pin numbering.  There's some
data in Brandon Heller's post about home/limit switches:

http://bb-lcnc.blogspot.com/2013/07/adding-homelimit-switches.html

I'll try to get something posted tonight...

-- 
Charles Steinkuehler
char...@steinkuehler.net



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[Emc-users] BBB Laptop Screens?

[Kirk Wallace]

Does anyone have thoughts on using an LCD screen from a laptop with a BBB?

http://g3nius.org/lcd-controller/
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[Emc-users] macro folder opinions

[Chris Morley]

It seems that macro/subroutines are available in a couple of GUIs.
I would think it would make sense to add a folder to ~/linuxcnc/
called macro to hold these in a common place.

Not sure if it makes sense to further subdivide that inside for
TOUCHY, Gmoccapy, etc...

Opinions?

Chris M
  
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Re: [Emc-users] Emc-users Digest, Vol 89, Issue 22

[Bob Weiss]

> Can someone please help me understand how the hal_pru_generic driver/comp,
> called with a number of stepgens= and pwmgens=, ends up mapping the
> generated signals to  hardware pins on the BBB headers (or chip)? Similarly
> how does the hal_bb_gpio mapping work?
>
>
The hal_pru_generic component is a driver written in C and Assembler that
creates the step signals on the hardware pins. The best way to understand
all this is to read the HAL and Integrator Manuals on the LinuxCNC wiki
pages. I had the same question(s) and this pretty much cleared it up. If
you are able to read through the source code you can see exactly what's
going on.

http://wiki.linuxcnc.org/cgi-bin/wiki.pl?LinuxCNCKnowledgeBase

Bob



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Re: [Emc-users] LinuxCNC Integrator meeting Germany?

[Sven Wesley]

2013/9/7 alex chiosso 

> Hi Sven.
> Sorry to say I'm wrong.
> The first one is ok  I made a mistake with the site reservation
> simulation.
> This option seems to be the best one for me.
>
> Thank you so much.
>
> Alex
>
>
i thought maybe they have higher rates for you crazy people from the south.
;)
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Re: [Emc-users] BBB Laptop Screens?

[Jon Elson]

Kirk Wallace wrote:
> Does anyone have thoughts on using an LCD screen from a laptop with a BBB?
>
> http://g3nius.org/lcd-controller/
>   
If you are looking for a BIG project, and wan to learn how to code for
FPGAs, jump right in!  Note that the device you link to is standalone,
it does not generate the signals for a computer to display on a monitor.
All the LCD panels are just a bit different, although they often follow
a pretty similar scheme.

There are so many good (external) LCD panels on eBay now for
low prices, there's no need to roll your won, unless you are
essentially going to make a beagle-laptop.

Jon

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Re: [Emc-users] Emc-users Digest, Vol 89, Issue 22

[Charles Steinkuehler]

On 9/7/2013 3:03 PM, Bob Weiss wrote:
> 
> I had the same question(s) and this pretty much cleared it up. If
> you are able to read through the source code you can see exactly what's
> going on.



I obviously need to obfuscate my code more...

:)

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Re: [Emc-users] BBB Laptop Screens?

[Florian Rist]

Hi Kirk

> Does anyone have thoughts on using an LCD screen from a laptop with a BBB?
> http://g3nius.org/lcd-controller/

AFAIK the Raspberry Pi features a LCD connector, so I should be possible
to directly connect the panel to the PI. Not you cold remote control the
BBB. Though this is a bit strange, it might be easier.


Flo

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Re: [Emc-users] BBB Laptop Screens?

[Florian Rist]

... forgot the easiest solution:

There is a HDMI/LCD cape for the BBB:

  http://www.embest-tech.com/shop/product/beaglebone-hdmi-cape.html

The panel directly connects to the cape - a adapter to change the
pin-out might be necessary, though.

Flo

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Re: [Emc-users] BBB Laptop Screens?

[Kirk Wallace]

On 09/07/2013 01:24 PM, Jon Elson wrote:
> Kirk Wallace wrote:
>> Does anyone have thoughts on using an LCD screen from a laptop with a BBB?
>>
>> http://g3nius.org/lcd-controller/
>>
> If you are looking for a BIG project, and wan to learn how to code for
> FPGAs, jump right in!  Note that the device you link to is standalone,
> it does not generate the signals for a computer to display on a monitor.
> All the LCD panels are just a bit different, although they often follow
> a pretty similar scheme.
>
> There are so many good (external) LCD panels on eBay now for
> low prices, there's no need to roll your won, unless you are
> essentially going to make a beagle-laptop.
>
> Jon

... snip

I have been looking at 10" to 12" displays with HDMI input, which would 
be the cleanest setup, but they are more expensive than a 19". On the 
other hand, laptop displays could be had for free or almost free. The 
BBB seems to have an LCD port, which I haven't looked into yet. I was 
also considering hacking picture frames, but again have little 
information on these. Ideally, someone has already done all the work on 
one of these solutions, and I can just copy it. ;)


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

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Re: [Emc-users] macro folder opinions

[Marius Liebenberg]

Chris
I think it is a good idea as it can become an issue when you have many 
gcode files mixed with macro type files. I see macros as part of the 
operational or setup software and should be managed as such.


On 2013/09/07 09:05 PM, Chris Morley wrote:
> It seems that macro/subroutines are available in a couple of GUIs.
> I would think it would make sense to add a folder to ~/linuxcnc/
> called macro to hold these in a common place.

>
> Not sure if it makes sense to further subdivide that inside for
> TOUCHY, Gmoccapy, etc...
>
> Opinions?
>
> Chris M
>   
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Re: [Emc-users] BBB Laptop Screens?

[Kirk Wallace]

On 09/07/2013 01:40 PM, Florian Rist wrote:
> Hi Kirk
>
>> Does anyone have thoughts on using an LCD screen from a laptop with a BBB?
>> http://g3nius.org/lcd-controller/
>
> AFAIK the Raspberry Pi features a LCD connector, so I should be possible
> to directly connect the panel to the PI. Not you cold remote control the
> BBB. Though this is a bit strange, it might be easier.
>
>
> Flo
>
... snip

Part of the plan was to use a smallish LCD display for a manual mill HAL 
only DRO/spindle controller, which would need to be inexpensive to worth 
while.

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Re: [Emc-users] BBB Laptop Screens?

[Charles Steinkuehler]

On 9/7/2013 4:03 PM, Kirk Wallace wrote:
> I have been looking at 10" to 12" displays with HDMI input, which would 
> be the cleanest setup, but they are more expensive than a 19". On the 
> other hand, laptop displays could be had for free or almost free. The 
> BBB seems to have an LCD port, which I haven't looked into yet. I was 
> also considering hacking picture frames, but again have little 
> information on these. Ideally, someone has already done all the work on 
> one of these solutions, and I can just copy it. ;)

Your easiest path is using an HDMI display.

EBay is your friend here, just make sure you get a display with enough
pixels to see the entire LinuxCNC display.  I got an 800x480 7" display
which works great, but none of the (recent) UI choices for LinuxCNC work
well with this small (in pixels) of a screen.  :(

If you want small, the 7" 1024x600 displays should work well, which you
can get on eBay for under $90 US:

http://www.ebay.com/itm/7inch-1024-600-LCD-PANEL-TM070DDH07-VGA-HDMI-2AV-USB-touch-remote-control-/251322267928?pt=LH_DefaultDomain_0&hash=item3a83f97918

If you want quick and easy, just go pick up an HDMI TV at your local
WalMart or equivalent.  Anything with a 720p or higher native resolution
should work OK, which should be most available displays these days.

Interfacing to a picture frame LCD is more hassle than it's worth,
unless you want to go through the experience (and gain the knowledge) of
trying to interface to a raw LCD panel which probably doesn't have specs
you can find online.

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Re: [Emc-users] BBB Laptop Screens?

[Kirk Wallace]

On 09/07/2013 01:46 PM, Florian Rist wrote:
> ... forgot the easiest solution:
>
> There is a HDMI/LCD cape for the BBB:
>
>http://www.embest-tech.com/shop/product/beaglebone-hdmi-cape.html
>
> The panel directly connects to the cape - a adapter to change the
> pin-out might be necessary, though.
>
> Flo

... snip
The BBB already has an HDMI port. I also found this HDMI to LVDS adapter:
http://www.ebay.com/itm/370794816312

Now, I need to dig through my pile of junk laptops to find a good screen.

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[Emc-users] Machine coordinates & offset madness!!

[Bob Weiss]

I am trying to get my printer setup with the correct home coordinates and
have it read 0 for x,y & z and everytime I start lcnc it shows z having
-235.211 something and I have NO IDEA where its getting this from? I zeroed
out the .var. If I touch off the z axis it will make it 0 but the -235.xxx
moves to the G54 coordinates. If I then zero the g54 offset it goes back to
the DRO coordinates.. That number bounces back and forth without every
becoming 0!!

I don't have limit/home switches hooked up yet and was "hoping" to manually
move the Z to the "home" position and have lcnc see it as being at 0. So if
I issue a HOME ALL it will just call itself home without moving the
machine. Right now if I press HOME ALL it makes the -235.xx as home
position.

How do I reset everything to 0 in lcnc? Where is it getting this -235.xxx
number from anyway??

Bob
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[Emc-users] config files for Slic3r and Kisslicer to use with LinuxCNC on the Beaglebone BeBoPr

[Bart]

Hello, I have been 3D printing a year with the Makerbot Replicator, and I'm
now trying to build my own 3D printer. A lot to learn and explore...
I just bought the Beaglebone as well the BeBoPr+ Cape and waiting to arrive
the parts. First I want to try Machinekit of Charles Steinkuhler on it with
LinuxCNC.
As I'm familiar with Kisslicer as well Slic3r, It would be great if someone
has some start configs (the .ini-files belonging to both slicers), so I can
start to see the differences in the needed Gcode.
It seems that Charles Steinkuhler has some settings according to his blog,
but maybe there are others as well.
I'm very curious about LinuxCNC!
I hope I use this list as intended, just sending an email to all emc-users?
Bart ter Haar
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Re: [Emc-users] config files for Slic3r and Kisslicer to use with LinuxCNC on the Beaglebone BeBoPr

[Charles Steinkuehler]

On 9/7/2013 8:17 PM, Bart wrote:
> Hello, I have been 3D printing a year with the Makerbot Replicator, and I'm
> now trying to build my own 3D printer. A lot to learn and explore...
> I just bought the Beaglebone as well the BeBoPr+ Cape and waiting to arrive
> the parts. First I want to try Machinekit of Charles Steinkuhler on it with
> LinuxCNC.
> As I'm familiar with Kisslicer as well Slic3r, It would be great if someone
> has some start configs (the .ini-files belonging to both slicers), so I can
> start to see the differences in the needed Gcode.
> It seems that Charles Steinkuhler has some settings according to his blog,
> but maybe there are others as well.
> I'm very curious about LinuxCNC!

I have a blog post on slicing for LinuxCNC:

http://bb-lcnc.blogspot.com/2013/07/slicing-for-linuxcnc.html

...since then, I've _tried_ to like Kisslicer, but I don't think you can
get decent prints (for most of the things I print, anyway) without using
support, since Kisslicer doesn't deal with bridges at all.  There are
also issues with "pauses" in straight lines embedded in the gcode, which
Johann recently wrote a post-processing script to fix:

https://groups.google.com/d/msg/deltabot/ThdWff-wMdI/jYEtYw0hWQ8J

Slic3r, on the other hand, doesn't really generate gcode for LinuxCNC at
all well.  There *IS* a Mach3/EMC gcode setting, but it seems to disable
anything reasonably modern in terms of features.

I have ended up using Slic3r configured to generate RepRap gcode (so all
the fancy features actually work), then run a post-processing sed script
to convert the gcode into something LinuxCNC will like.  This is mostly
changing the E axis to the A axis, modifying the parameters for the M1xx
gcode entries (ie: changing S to P), and commenting out a few things
LinuxCNC doesn't like.

As for actual *.ini files, Johann has some for Kisslicer in his Kossel
github repository:

https://github.com/jcrocholl/kossel/tree/master/kisslicer

I didn't significantly change from his files when testing Kisslicer,
other than the changes required for LinuxCNC (ie: extruder axis = A
instead of E) and parameters related to my filament (temperature and
diameter).  Those settings are generally covered in my blog post.

I don't have ini files from Slicer online anywhere, but I'm pretty much
using the same settings I was using with the Arduino firmware, just
tweaked a bit for temperature (the temperature reads a bit differently
on my BeagleBone than it did on the RAMPS/Arduino).

If you've got slicing dialed in for an Arduino controller, you should be
able to migrate the firmware settings to your LinuxCNC ini/hal file, and
pretty much leave the slicing settings alone (except maybe for bumping
the temperature a bit up or down).

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Re: [Emc-users] BBB Laptop Screens?

[Paul Lacatus]

On 9/8/2013 12:53 AM, Kirk Wallace wrote:
> On 09/07/2013 01:46 PM, Florian Rist wrote:
>> ... forgot the easiest solution:
>>
>> There is a HDMI/LCD cape for the BBB:
>>
>> http://www.embest-tech.com/shop/product/beaglebone-hdmi-cape.html
>>
>> The panel directly connects to the cape - a adapter to change the
>> pin-out might be necessary, though.
>>
>> Flo
>
I am also searching for a HMI solution for beagle bone running LinuxCNC 
. My idea is to use an inexpensive android tablet with a X11 server app 
that can provide a display a touch screen.  I thin that this solution is 
affordable and much more colplete than a LCD interface with a keyboard 
and mouse and more space saving .  For a small milling CNC  I think that 
is better .  The issue is that the tablets use  only wifi connection

Paul

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