Re: [Emc-users] Mill ramp angle

[Rob C]

https://www.onsrud.com/articles/O-Flutes-For-Mechanical-Plastics.asp


https://www.axyz.com/when-do-i-use-an-o-flute-bit/


https://www.endmill.com.au/blog/what-the-flute-a-comprehensive-guide-to-cnc-router-bits/

I use for aluminium with a router table

the advantage is they are much less likely to gum up than a normal helix
and are better at heat dissipation, they are available with flute direction
of  upcut, downcut and centre profile (for different materials) and given
they only have 1 cutting edge have a lower feedrate when used in a router
spinning at 20,000 rpm against a higher number of flutes cutter.

I haven't needed to use them for a while but they are useful to know about
to cut aluminium on a router table.





On Fri, 14 Apr 2023, 21:13 john,  wrote:

> What is an O-Flutes cutter?
>
> -Original Message-
> From: Todd Zuercher [mailto:to...@pgrahamdunn.com]
> Sent: April 14, 2023 6:52 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Mill ramp angle
>
> I've had great success with 1/4" O-flutes in aluminum.  But I spiral those
> in pretty much exclusively and use HSM style tool paths where the tool
> never
> sees more than about 20-30% engagement.  (While I've broken lots of 1/4"
> O-flues, I've never noticed the tip breaking.)
>
> Todd Zuercher
> P. Graham Dunn Inc.
> 630 Henry Street
> Dalton, Ohio 44618
> Phone:  (330)828-2105ext. 2031
>
> -Original Message-
> From: Rob C 
> Sent: Friday, April 14, 2023 9:04 AM
> To: Enhanced Machine Controller (EMC) 
> Subject: Re: [Emc-users] Mill ramp angle
>
> [EXTERNAL EMAIL] Be sure links are safe.
>
> what is the material?
> what is the endmill material?
> how many flutes?
> is it centre cutting tool or non-center cutting end mill?
>
> I have always struggled on o-flute endmills and ramp or plunge (breaking
> the
> tip :(
>
>
> https://zero-divide.net/?&article_id=4307_plunging-and-ramping-recomendation
> s-and-techniques
> <https://zero-divide.net/?&article_id=4307_plunging-and-ramping-recomendations-and-techniques>
>
> On Fri, 14 Apr 2023 at 12:56, Nicklas SB Karlsson  wrote:
>
> > fre 2023-04-14 klockan 12:07 +0100 skrev andy pugh:
> > > On Fri, 14 Apr 2023 at 10:29, Nicklas SB Karlsson  wrote:
> > >
> > > >
> > > > Anyone have any suggestion about this? Decrease ramp angle?
> > > >
> > >
> > > Can you spiral down, making a hole slightly less than twice the tool
> > > diameter, so that only one side of the tool is engaged?
> > Yes it would be possible.
> >
> > If possible to convince CAM module in CAD software I could also plunge
> > into a hole with a diameter 2mm less than mill.
> >
> >
> > Nicklas Karlsson
> >
> >
> >
> > ___
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> > Emc-users@lists.sourceforge.net
> > https://list/
> > s.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=05%7C01%7Ctoddz%
> > 40pgrahamdunn.com%7C0a8897a3cab844908e5708db3ce8de16%7C5758544c573f47c
> > ebee96c3e0806fb43%7C0%7C0%7C638170743088332739%7CUnknown%7CTWFpbGZsb3d
> > 8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C
> > 3000%7C%7C%7C&sdata=8YboLOEp9TzsBnJd9rorTnrtXIalE6uXFDUVlnThlA4%3D&res
> > erved=0
> >
>
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Re: [Emc-users] Mill ramp angle

[Rob C]

what is the material?
what is the endmill material?
how many flutes?
is it centre cutting tool or non-center cutting end mill?

I have always struggled on o-flute endmills and ramp or plunge (breaking
the tip :(

https://zero-divide.net/?&article_id=4307_plunging-and-ramping-recomendations-and-techniques

On Fri, 14 Apr 2023 at 12:56, Nicklas SB Karlsson  wrote:

> fre 2023-04-14 klockan 12:07 +0100 skrev andy pugh:
> > On Fri, 14 Apr 2023 at 10:29, Nicklas SB Karlsson  wrote:
> >
> > >
> > > Anyone have any suggestion about this? Decrease ramp angle?
> > >
> >
> > Can you spiral down, making a hole slightly less than twice the tool
> > diameter, so that only one side of the tool is engaged?
> Yes it would be possible.
>
> If possible to convince CAM module in CAD software I could also plunge
> into a hole with a diameter 2mm less than mill.
>
>
> Nicklas Karlsson
>
>
>
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Re: [Emc-users] An actual application for non-circular boring..

[Rob C]

Nice!

what is your spindle?

servo motor with encoder?

On Sun, 12 Mar 2023 at 15:17, Sam Sokolik  wrote:

> When all you have is a hammer
>
> https://www.youtube.com/watch?v=qMLz4kWoAEI
>
> sam
>
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Re: [Emc-users] custom m codes tutorial and cnc lathe bar pulling

[Rob C]

https://linuxcnc.org/docs/html/gcode/o-code.html#ocode:fanuc-style-programs

use the "L" switch for looping X number of times

On Sun, 29 Jan 2023, 10:22 andrew beck,  wrote:

> Thanks gene
>
> Hey you might know how to loop a gcode file
>
> I want to loop a gcode file 50 times.
>
> Ideally using m98 and m99
> But I'm a bit stuck on how to do it.
>
> Does anyone have some tips?
>
> This is for bar pulling in CNC lathe
>
> M400 unclamps chuck and m401 clamps chuck
>
>
> And I need some way to loop the g code
>
> On Fri, 27 Jan 2023, 15:12 gene heskett,  wrote:
>
> > On 1/26/23 16:42, andrew beck wrote:
> > > hey guys
> > >
> > > just wanted to let people know i just made a tutorial on custom m codes
> > and
> > > i couldn't find much info on it and wanted to help the next guy and
> > remind
> > > myself when i forget next time lol
> > >
> > >
> >
> https://forum.linuxcnc.org/10-advanced-configuration/48071-custom-m-codes-and-bar-puller-set-up#262959
> > >
> > >
> > > and also if any of you machinists have good tips for bar pulling on a
> cnc
> > > lathe i would love the ideas i have never done it before
> > >
> > > regards
> > >
> > > Andrew
> > >
> >
> > I don't have a bar puller, not even a 5C collet, just an ER42 collet
> > kit. If I am doing multiple copies, I position the tool to act as a
> > stopper, loosen the big nut and push the rod thru to touch the tool,
> > tightening the nut again gets me a couple thou clearance but that can be
> > compensated for in your program. With a reasonable speed of bar pusher
> > so it does not damage the tool when it hits the tool, it ought to work
> > till you are out of that bar.
> >
> > One could put a microswitch in the position of the tool to automate
> > that, including a shutdown when the bar no longer trips the switch in a
> > long enough time it should have tripped.
> >
> > With a couple solenoids to engage the nut wrench, and a reversible vfd,
> > that all could be programmed. Even to ejecting the bars remains and
> > feeding a new one from a rack of them could be done.
> >
> > Lots of ways to skin that cat. This is just three ideas.
> >
> > Take care and stay well, Andrew.
> >
> > 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, 1940)
> > If we desire respect for the law, we must first make the law respectable.
> >   - Louis D. Brandeis
> > Genes Web page 
> >
> >
> >
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Re: [Emc-users] Running PathPilot on non-Tormach Machines

[Rob C]

have you tried nativecam?

easy to add to axis (when you've done it before).

centroid acorn is nice, but very expensive and has very few iOS (compared
to Mesa hardware and linuxcnc) and only 4x step and direction ports..
your choice.

On Tue, 24 Jan 2023, 18:42 John Dammeyer,  wrote:

> > From: Andy Pugh [mailto:bodge...@gmail.com]
> > > On 24 Jan 2023, at 15:38, ken.stra...@sympatico.ca wrote:
> > >
> > > But seriously, in my opinion a major impediment to the widescale
> adoption of
> > > LinuxCNC is the lack of an appealing and intuitive UI.
> >
> > There are around 12 user interfaces. Are you saying that they are _all_
> terrible?
> >
>
> I'll jump in on this one.   They are _all_ great and they are _all_
> terrible.
>
> Imagine your average home shop machinist.  His kids are finally out the
> door and he's at an income level where he's got his lathe with a DRO and he
> just bought a small mill.  He starts looking at CNC.
>
> At work and at home he uses Windows.  And he's bought into the free Fusion
> 360 con job for CAD/CAM and is now looking at how to add CNC to his mill.
>
> OMG.  What a hodge podge of systems.
>
> So he starts on the various groups looking for what is available including
> even AliExpress which has CNC boxes for $300.
>
> Not having used CNC before and not knowing anyone local the youtube videos
> become his other source of information and education.  The most interesting
> ones appear to be ones with 10's of thousands of subscribers that in fact
> are really long mostly to have multiple advertisers.  But at the time he's
> not aware that the videos are short on information, long on con for
> supporting lots of advertising.
>
> IMHO, the more advertisements in really long videos the more likely the
> poster is there to monetize than to actually provide useful help.   How
> interesting to watch a milling cutter for 2 minutes go back and forth
> making chips.  Oh, and now another advertisement.
>
> So someone on a forum recommends MESA.
>
> http://store.mesanet.com/index.php?route=product/product&path=83_84&product_id=215
> Hmm.  Out of stock.  And even if it were, there's no diagram like the
> ACORN one.  So no idea where to start...
>
> Oh but then someone suggests
>
> http://store.mesanet.com/index.php?route=product/product&product_id=381&search=7i92
>
> Now I need to wire to it.  A suggestion comes up for two of these and
> cheap too.
> https://www.aliexpress.com/item/33015669728.html
>
> Next motors and power supplies.  What to buy?  People rave about these new
> step-servos.  One brand in particular.  But what size?  Direct coupled or
> with belts and pulleys?
>
> So back to the internet and youtube.  Ah, this guy has a mill like mine.
> He used the Leadshine step servos and ACORN.   Ordered, installed as per
> the youtube video.  Making chips.
>
> And he doesn't have to wade through deciding which of _all_ 12 or so LCNC
> user interfaces to use.
>
> The above is I think the typical thought processes.
>
> I'm still using AXIS.  Can't be bothered to spend the time trying to
> figure out whether I should spend $400 for a touch screen HDMI 21" screen
> or some other user interface.  Really miss the MACROs from MACH3 though.  I
> think that's what's called the conversational interface on Tormach?
>
> John
>
>
>
>
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Re: [Emc-users] Running PathPilot on non-Tormach Machines

[Rob C]

am I missing something, this is all documented on the forum, with a number
of users using tormach with non tormach machines.

https://forum.linuxcnc.org/pathpilot

Mesa 7i92 will work just fine (I have had it running before)

now I have seen the light, and just run linuxcnc with axis for mill, router
and lathe, and qtplasmac for plasma.  it just works.  no it's not eye candy
but life is about the taste of the coffee and not the shape or look of the
mug / cup.

I do use nativecam and also ngcgui again they just work.

what benefit are you after using path pilot other than the gui appearance?

a similar appearance can be done with using qtpyvcp and probe basic

https://www.qtpyvcp.com/showcase/mill_vcps.html

what do you think tormach is going to do better than linuxcnc? . other
than the display interface?  (I am genuinely curious what the benefit is)

rob


On Tue, 24 Jan 2023, 06:04 andrew beck,  wrote:

> Just a quick note.
>
> I think they run a standard mesa card.
>
>
>
> On Tue, 24 Jan 2023, 18:22 John Dammeyer,  wrote:
>
> > -Original Message-
> > > From: Ron Ginger [mailto:rongin...@roadrunner.com]
> > >
> > > I would like to try to run PathPilot on my own mill. I now run Mach4,
> > > but I would like to see how well PathPilot works.
> > >
> > > I see I can simply download a copy from the Tormach site.  what
> > > interface board do I need?
> > >
> > > What is Tormachs position on this? I know they have to release the code
> > > because it is based on open source, but do they oppose its use?
> > >
> > > thanks
> > >
> > > ron ginger
> > >
> >
> > Hi Ron,
> > Long time.
> > Have you asked Tormach what kind of interface board they use?  I doubt
> > it's a parallel port.
> >
> > My guess is if you use open source LCNC for your system.  Spend the
> > time/money to create a custom user interface for it but don't want
> everyone
> > using it you'd likely use a customized piece of hardware as the break out
> > board.
> >
> > However, unlike MACH, the two important files in LCNC are the .INI and
> > .HAL files.  In the Tormach image those two will describe how they talk
> to
> > the machine hardware.
> >
> > For example I use a MESA 7i92H and for a while had dual boot for WIN-XP
> > and LCNC to a PMDX-126 break out board.  It's Ethernet to the MESA which
> > emulates two parallel ports onto the PMDX.
> >
> > Here's how I documented (for my own needs) the first parallel port with
> > the DB-25 pins cross referenced to the MESA pins.
> >
> > Looking forward to what you find out.
> > John Dammeyer
> >
> > # external I/O signals
> > # IO Connections for P2 MESA 7i92_PMDX126Ax2D.pin  (modified from pin
> file)
> > # DBn.m_PMDX_Jn.m  I/O   Pri.func  Sec. func   Chan  Pin func
> >   Pin DirSystem usage
> >
> > # P1.1_J6.2 0   IOPort None
> >   (Out)  machine-is-enabled (output)
> > # P1.14_J6.31   IOPort PWM  0PWM
> >(Out)  spindle-vel-cmd-rps PWM (output)
> > # P1.2_J4.2 2   IOPort StepGen  0Step/Table1
> >(Out)  x axis step pulse (output)
> > # P1.15_J12.9   3   IOPort None
> >   (In)   max-x-y-min-z (input)
> > # P1.3_J4.3 4   IOPort StepGen  0Dir/Table2
> >   (Out)  x axis dir signal (output)
> > # P1.16_J6.45   IOPort None
> >   (Out)  spindle-ccw output (output)
> > # P1.4_J3.2 6   IOPort StepGen  1Step/Table1
> >(Out)  y axis step pulse (output)
> > # P1.17_J6.57   IOPort StepGen  4Step/Table1
> >(Out)  Charge Pump frequency (output)
> > # P1.5_J3.3 8   IOPort StepGen  1Dir/Table2
> >   (Out)  y axis dir signal (output)
> > # P1.6_J2.2 9   IOPort StepGen  2Step/Table1
> >(Out)  z axis step pulse (output)
> > # P1.7_J2.3 10  IOPort StepGen  2Dir/Table2
> >   (Out)  z axis dir signal (output)
> > # P1.8_J1.2 11  IOPort StepGen  3Step/Table1
> >(Out)  a axis step pulse (output)
> > # P1.9_J1.2 12  IOPort StepGen  3Dir/Table2
> >   (Out)  a axis dir signal (output)
> > # P1.10_J13.4   13  IOPort None
> >   (In)   estop-external-in (input)
> > # P1.11_J12.3   14  IOPort QCount   0Quad-A
> >   (In)   min home-x (input)
> > # P1.12_J12.5   15  IOPort QCount   0Quad-B
> >   (In)   min home-y (input)
> > # P1.13_J12.7   16  IOPort QCount   0Quad-IDX
> >   (in)   max-home-z (input)
> >
> >
> >
> >
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Re: [Emc-users] can I hide the nativecam interface

[Rob C]

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Re: [Emc-users] cable connector for lcda357H stepper_servo

[Rob C]

If it's the green connector, just search google for 6 pin 5.08 mm screw
terminal and you will get these sort of hits:
https://www.amazon.co.uk/dp/B0924QD2T2?tag=amz-mkt-chr-uk-21&ascsubtag=1ba00-01000-org00-win10-other-smile-uk000-pcomp-feature-scomp-feature-scomp&ref=aa_scomp

https://www.google.com/search?q=6+pin+5.08+screw+terminal&rlz=1C1GCEA_enGB928GB928&sxsrf=ALiCzsZ_Zu8IuD736JHpZK01OeIrOj8YVw:1653332340188&source=lnms&tbm=isch&sa=X&ved=2ahUKEwi7mdT2pvb3AhXDoFwKHbE_BeQQ_AUoAXoECAEQAw&biw=1229&bih=531&dpr=1.56



On Mon, 23 May 2022 at 19:58, Rob C  wrote:

> Is this the green connector plug?
>
> On Mon, 23 May 2022 at 18:57, andy pugh  wrote:
>
>> On Mon, 23 May 2022 at 18:41, dave engvall  wrote:
>>
>> > Can anyone provide a part number, eg. manufacturer or digikey, etc
>> > number for the 6 pin encoder cable connector on the LCDA357H controller.
>>
>> Google has shown a number of options (including DE-09)
>>
>> Can you find a photo, and measure the pin pitch?
>>
>> --
>> atp
>> "A motorcycle is a bicycle with a pandemonium attachment and is
>> designed for the especial use of mechanical geniuses, daredevils and
>> lunatics."
>> — George Fitch, Atlanta Constitution Newspaper, 1912
>>
>>
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Re: [Emc-users] cable connector for lcda357H stepper_servo

[Rob C]

Is this the green connector plug?

On Mon, 23 May 2022 at 18:57, andy pugh  wrote:

> On Mon, 23 May 2022 at 18:41, dave engvall  wrote:
>
> > Can anyone provide a part number, eg. manufacturer or digikey, etc
> > number for the 6 pin encoder cable connector on the LCDA357H controller.
>
> Google has shown a number of options (including DE-09)
>
> Can you find a photo, and measure the pin pitch?
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1912
>
>
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Re: [Emc-users] Do pnp prox switches need a pulldown load R?

[Rob C]

The colour change in the UK was one of the worst ideas ever!

being faced with 3x brown wires and guessing which is L1, L2 and L3 is
about as useful as a brush with no bristles!

Red Yellow Blue / RYB always made sense to me as an on the tools
electrician.  neutral was always black.

If I ever saw those colours I stopped and checked the supply into the panel.

in single phase house bashing who cares brown+blue or red and black was
universal.

guess thats what progress is sometimes its just change for the sake of
change


On Thu, 12 May 2022 at 15:21, Chris Albertson 
wrote:

> On Wed, May 11, 2022 at 3:03 PM gene heskett  wrote:
>
> >
> > I suppose in some circles that bleached red could be called brown. But
> > blue has never been ground on this side of the pond. Which is odd, in
> > electrical wireing, black is hot, white is neutral/ground, a static
> > ground is green. Inside a radio, black is ground.
>
>
> Yes, that is how it works in the US.   But they did other things
> differently in the US too.  Like using inches and yards to measure
> distance.  At about 60+ I might be the youngest to remember US units like
> feet used in engineering work.  When I was in school they still had us do a
> few of the problems in US units.   They stopped using that soon after and
> from the 80s all work was metric.
>
> There might be a cultural reason for using blue for ground.   My wife
> sometimes slips up and in English calls the "GO" light in a traffic signal
> "Blue" even though the color is green worldwide.Her first two
> languages, when she grew up were Japanese and Chinese.
>
> In English Green, Ground and Go all start with "G", so I'd guess that is
> why we used green.   But that coincidence only works in English.
>
>
> Chris Albertson
> Redondo Beach, California
>
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Re: [Emc-users] If you are looking for a cheap mini PC for LinuxCNC in the UK

[Rob C]

Thanks Les, much appreciated for the headsup
Rob

On Tue, 10 May 2022 at 09:44, Les Newell  wrote:

> I just spotted these on eBay 
>
> I've always been a fan of Wyse thin clients and this model works really
> well with LinuxCNC and Mesa Ethernet cards. I use one on my lathe. At
> £19 I'm guessing they'll probably sell out soon.
>
> Les
>
>
>
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Re: [Emc-users] tests hanging?

[Rob C]

run:
lscpu
post the reply / contents

you can also try:
nproc --all
that processor should have a good single core speed.

are you using isolcpus within grub?
there are mixed points of view about isolcpus and whether or not
its relevant. Personally I use it and it seems to provide better latency
results and I only use it on 1 of my 2 cores for timing and it seems to
help (YMMV).  if you have isolcpus set, how have you set it
https://www.codeblueprint.co.uk/2019/10/08/isolcpus-is-deprecated-kinda.html
cset is not for linuxcnc users as c states are normally disabled

what works, works... and if it works for you even better.

On Fri, 11 Feb 2022 at 07:29, Andy Howell  wrote:

>
> On 2/11/22 00:54, Phill Carter wrote:
> >
> >> On 11 Feb 2022, at 5:39 pm, Andy Howell  wrote:
> >>
> >> When I run the test suite there are a number of tests that seem to
> hang.  It could be I am just impatient. For example:
> >>
> >> tests/linuxcncrsh-tcp
> >>
> >> tests/linuxcncrsh
> >>
> >> tests/mdi-queue/oword-queue-buster
> >>
> >> Should I expect all the tests to run?
> >>
> >> I running this under Ubuntu 21.10 on an older laptop, Intel(R) Core(TM)
> i7-4810MQ CPU @ 2.80GHz, 32GB memory. SSD drive.
> >>
> >> Thanks,
> >>
> >> Andy
> >>
> >>
> > Some tests do take a little while, the queuebusters seem to take longer
> than most...
> >
> > I "think" that while there is no error then it is still running.
> Thanks, I let it run 20 or 30 minutes. Guess I will sleep on it an see
> what the morning brings.
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Re: [Emc-users] can I hide the nativecam interface

[Rob C]

Yes nativecam will work for milling, plasma and lathe operations.
unfortunately its not been updated to python3 .. so if you use it on a
debian bullseye or linuxcnc master build it won't work :(

I've tried to have a go at making it nativecam + python3 functional but
failed but really like nativecam.

I use PlasmaC for my plasma setup so like to be on the bleeding edge of
development (master)  hence I can't use python 2 + 3 unless I went back
to debian buster which I may do eventually (busy doing other things
(noncnc) at present)

On Thu, 27 Jan 2022 at 22:42, Thaddeus Waldner  wrote:

> I’m not sure if you can “hide” NativeCam once embedded, but it’s possible
> to use it as a standalone application. That way it won’t take up space on
> your CNC gui.
>
>
> > On Jan 27, 2022, at 12:03 PM, fxkl47BF--- via Emc-users <
> emc-users@lists.sourceforge.net> wrote:
> >
> > I started playing with nativecam.
> > It's pretty neat.
> > With linuxcnc running is there a way to "hide" the nativecam interface?
> >
> >
> >
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Re: [Emc-users] OT: mouses

[Rob C]

nice idea

On Wed, 19 Jan 2022, 00:08 andy pugh,  wrote:

> On Mon, 10 Jan 2022 at 18:27, fxkl47BF--- via Emc-users
>  wrote:
>
> > > Though they are rather expensive if you pay full list price. I think I
> > > found a good second-hand one.
> >
> > Just looking at the prices for those makes my pacemaker work overtime. :)
>
> Maybe there is an answer here?
>
> https://hackaday.com/2022/01/18/a-diy-cad-mouse-you-can-actually-build/
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1912
>
>
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Re: [Emc-users] OT: mouses

[Rob C]

you may be able to find it cheaper somewhere else possibly as that link was
for amazon.co.uk and not *.com

On Mon, 10 Jan 2022 at 17:47, fxkl47BF--- via Emc-users <
emc-users@lists.sourceforge.net> wrote:

> On Mon, 10 Jan 2022, Rob C wrote:
>
> > Oh ELECOM seem to do a left handed trackball  (using the thumb for the
> > movement).
> >
> https://www.amazon.co.uk/ELECOM-Left-handed-Wireless-function-M-XT4DRBK-Black/dp/B016QCPRBM
>
> That's an interesting "mouse" and $38 bucks.
> Worth a try.
>
>
> >
> > On Mon, 10 Jan 2022 at 17:24, Chris Albertson  >
> > wrote:
> >
> >> I have just a standard Microsoft cordless mouse.  It is connected to a
> >> Linux PC and is used too many hours a week on CAD (Fusion 360)
> >> Which CAD you use might matter because I think some systems allow you to
> >> program shortcuts.
> >>
> >> I think all you really need is one that works smoothly and reliably and
> has
> >> a center scroll wheel.
> >>
> >> On Mon, Jan 10, 2022 at 9:14 AM fxkl47BF--- via Emc-users <
> >> emc-users@lists.sourceforge.net> wrote:
> >>
> >>> I'm in the market for a "decent" mouse for cad.
> >>> There is a passel of them out there.
> >>> Many of them are very pricey.
> >>> I'm just a casual user.
> >>> And a lefty.
> >>> Do y'all have any recommendations?
> >>>
> >>>
> >>>
> >>> ___
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> >>> Emc-users@lists.sourceforge.net
> >>> https://lists.sourceforge.net/lists/listinfo/emc-users
> >>>
> >>
> >>
> >> --
> >>
> >> Chris Albertson
> >> Redondo Beach, California
> >>
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> >> https://lists.sourceforge.net/lists/listinfo/emc-users
> >>
> >
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> >
>
>
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Re: [Emc-users] OT: mouses

[Rob C]

Oh ELECOM seem to do a left handed trackball  (using the thumb for the
movement).
https://www.amazon.co.uk/ELECOM-Left-handed-Wireless-function-M-XT4DRBK-Black/dp/B016QCPRBM

On Mon, 10 Jan 2022 at 17:24, Chris Albertson 
wrote:

> I have just a standard Microsoft cordless mouse.  It is connected to a
> Linux PC and is used too many hours a week on CAD (Fusion 360)
> Which CAD you use might matter because I think some systems allow you to
> program shortcuts.
>
> I think all you really need is one that works smoothly and reliably and has
> a center scroll wheel.
>
> On Mon, Jan 10, 2022 at 9:14 AM fxkl47BF--- via Emc-users <
> emc-users@lists.sourceforge.net> wrote:
>
> > I'm in the market for a "decent" mouse for cad.
> > There is a passel of them out there.
> > Many of them are very pricey.
> > I'm just a casual user.
> > And a lefty.
> > Do y'all have any recommendations?
> >
> >
> >
> > ___
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> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
>
>
> --
>
> Chris Albertson
> Redondo Beach, California
>
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Re: [Emc-users] OT: mouses

[Rob C]

I presently use a number of ELECOM DEFT M-DT2DR mice (I have 1 wireless for
work laptop, another for a personal laptop and a wired one for my LinuxCNC
setup).  I'm using one now.
https://www.elecom.co.jp/global/

I like the roller ball as it does not give me RSI like a motion mouse.

I am not sure if they do a left handed one though

https://3dconnexion.com/uk/
is another CAD mouse... although they are very expensive (in my opinion),
especially if I were to buy 3 . .  I have tried to avoid odd ball mice
over the years because they wear out over time and really you need to be
able to use any mouse if you do cad work.   I can't use a touchpad (I've
tried!).

I started out with the microsoft trackball years ago and have worn about 3
of them out over the years but they are no longer made and are now very
expensive. the Elecom Deft is similar and comfortable for very long periods
of use.



On Mon, 10 Jan 2022 at 17:14, fxkl47BF--- via Emc-users <
emc-users@lists.sourceforge.net> wrote:

> I'm in the market for a "decent" mouse for cad.
> There is a passel of them out there.
> Many of them are very pricey.
> I'm just a casual user.
> And a lefty.
> Do y'all have any recommendations?
>
>
>
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Re: [Emc-users] CNC controlled, plasma torch

[Rob C]

like the idea with the funnel.

there are no issues with the planner and look ahead.  g64 options help
tremendously with path blending

I am just a hobby user

On Sat, 8 Jan 2022, 15:47 Milosz K.,  wrote:

> I cut near flammables and my solution is cutting over a water bed with a
> slicone funnel on the torch.
>
> This is a photo for illustration.
> https://images.app.goo.gl/cUFKnX5iMdVrHPTH6
>
>
>
> On Fri, Jan 7, 2022, 4:45 PM Nicklas SB Karlsson  wrote:
>
> > Anyone used Linuxcnc with plasma torch here.
> >
> >
> > There is another major problem, one third of building is allocated for
> > firewood storage. Need a good way to keep sparks away from it.
> >
> >
> > Nicklas Karlsson
> >
> >
> >
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Re: [Emc-users] CNC controlled, plasma torch

[Rob C]

linuxcnc works just fine with plasma

take a look at PlasmaC.

lots of users including many for commercial purposes.

On Sat, 8 Jan 2022, 12:36 Robin Szemeti via Emc-users, <
emc-users@lists.sourceforge.net> wrote:

> I built a few plasmas with EMC, the trajectory planner was a problem at the
> time with it not being able to smoothly keep going between IJ arcs. This
> can cause problems in thin sheet ... maybe it is better now.
>
> I always had trouble keeping the HF from the arc start out of the
> electronics.
>
> On Sat, 8 Jan 2022 at 09:58, Rob C  wrote:
>
> > you could put sides on it that will catch any sparks, or an enclosure
> > around it, same as I have for a 3d printer so it has its own heated
> > environment.
> >
> > you could also add a water table that will catch all downward metal
> swarf.
> >
> > On Fri, 7 Jan 2022, 21:51 Thaddeus Waldner,  wrote:
> >
> > > Use a submerged torch. This will also take care of the smoke.
> > >
> > >
> > > Thaddeus Waldner
> > > Newdale School
> > > Elkton, SD 57026
> > > 
> > > From: Nicklas SB Karlsson 
> > > Sent: Friday, January 7, 2022 3:13:17 PM
> > > To: emc-users@lists.sourceforge.net 
> > > Subject: [Emc-users] CNC controlled, plasma torch
> > >
> > > Anyone used Linuxcnc with plasma torch here.
> > >
> > >
> > > There is another major problem, one third of building is allocated for
> > > firewood storage. Need a good way to keep sparks away from it.
> > >
> > >
> > > Nicklas Karlsson
> > >
> > >
> > >
> > > ___
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> > > 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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> >
>
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Re: [Emc-users] CNC controlled, plasma torch

[Rob C]

you could put sides on it that will catch any sparks, or an enclosure
around it, same as I have for a 3d printer so it has its own heated
environment.

you could also add a water table that will catch all downward metal swarf.

On Fri, 7 Jan 2022, 21:51 Thaddeus Waldner,  wrote:

> Use a submerged torch. This will also take care of the smoke.
>
>
> Thaddeus Waldner
> Newdale School
> Elkton, SD 57026
> 
> From: Nicklas SB Karlsson 
> Sent: Friday, January 7, 2022 3:13:17 PM
> To: emc-users@lists.sourceforge.net 
> Subject: [Emc-users] CNC controlled, plasma torch
>
> Anyone used Linuxcnc with plasma torch here.
>
>
> There is another major problem, one third of building is allocated for
> firewood storage. Need a good way to keep sparks away from it.
>
>
> Nicklas Karlsson
>
>
>
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Re: [Emc-users] Tormach writing open sorce ROS2/Machiekit/LCNC bridge.

[Rob C]

I was also confused by machine kit reference from tormach.  I thought
tormach was based on linuxcnc and not the machine kit branch/fork

although I guess if Tormach are running a 2.7 linuxcnc version I guess you
could say they have their own branch/fork

I would have thought that since the change to python 3 with linuxcnc that
will be quite a divergent change to linuxcnc that will make it difficult to
integrate any items pushed back to 2.7

On Wed, 5 Jan 2022, 18:38 John Dammeyer,  wrote:

> > From: Chris Albertson [mailto:albertson.ch...@gmail.com]
> >
> > On Wed, Jan 5, 2022 at 3:29 AM Gregg Eshelman via Emc-users <
> > emc-users@lists.sourceforge.net> wrote:
> >
> > > That repeatability is plenty good enough to drop work into an automatic
> > > holding fixture (which does the final precision positioning) then pick
> the
> > > pieces out for transfer to another manufacturing stage or into a box.
> > >
> >
>
> > As it turns out, for all the really hard tasks, +/- a quarter-inch
> (0.25")
> > is accurate enough.  You only need 0.001 inches for the simple no-brain
> > jobs.   So my point is that you can do a LOT with the cheaper 3D printed
> > plastic version of this robot.
> >
> > I'm surprised there are not more people here working on robots.  hey are
> > very much like CNC tools but more interesting.
> >
>
> I'm headed in that direction once I get the power drawbar working to my
> satisfaction.  I had considered using one of the Size24 Steppers with 50:1
> planetary drives to replace the butterfly impact wrench.  Easy enough to
> track turns with an encoder on the back of the motor and let it stall when
> target torque is reached with software control of motor torque.  Then to
> remove use full torque for required number of turns.
>
> Then the tool changer.  To me a robot arm seemed more useful since I'm
> using TTS and R8 tooling.  Lining up the R8 is possible because the spindle
> has step/dir so the spindle could be rotated until the R8 tool slips up the
> key.
>
> Anyway, my Ball Bearing Jacobs Chuck with R8 weighs in at 1.7kg without
> tooling so I think a 3D printed version of this arm is probably just a bit
> undersize along with the planetary gearboxes not being 0 backlash.
>
> You're right.  His software is minimal but still the entire project as
> open source is impressive.  Few people are doing it to that level even if
> he's earning income off the metalwork and part sets which comes to over $1k
> if you buy his metal and bearing and parts sets along with the
> StepperOnline motors and gearboxes.
>
> But still it's interesting other than I'd much rather dedicated a Pi4 and
> LCNC to it.  With no idea where to start since I don’t' even know what
> ROS2 is and am confused as to why Tormach is using the MachineKit version
> instead of LCNC.  I thought MachineKit had stalled and was no longer used.
>
> John
>
>
>
>
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Re: [Emc-users] Tormach writing open sorce ROS2/Machiekit/LCNC bridge.

[Rob C]

Interesting looking at the AR2/AR3
https://www.anninrobotics.com/

On Tue, 4 Jan 2022 at 18:14, andy pugh  wrote:

> On Tue, 4 Jan 2022 at 17:41, Robin Szemeti via Emc-users
>  wrote:
> >
> > Out of interest, how is PathPilot related to LinuxCNC?
>
> It's LinuxCNC with their own GUI on top. But maybe v2.7 as I don't
> _think_ that they have the joints-axes changes in.
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1912
>
>
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Re: [Emc-users] jerk control

[Rob C]

any interest / help

https://www.pmdcorp.com/resources/type/articles/get/mathematics-of-motion-control-profiles-article

On Sun, 29 Aug 2021, 18:40 Chris Albertson, 
wrote:

> In the general case there may be no closed form solution so numeric
> integration is the only possible solution.I don't think there is any
> other way to do it other than numeric integration except to require the
> user to supply a function for closed form integrals.  But for a 3-axis
> mill that uses trivial kinematics there is an easy closed form integral.
> So the problem is very different depending on what kind of machine you want
> to control.For people here, almost all are using trivial kinematics.
>
> The problem is also VERY different based on another decision.  Do you want
> only simple jerk limiting or do you want an optimal path?   In other words,
> do you simply take your foot off the gas to avoid going over the speed
> limit or do you want to drive to work in the absolute minimum time but
> without speeding.  Those are different problems.  The first one is easy to
> do, the second takes quite a lot of effort.
>
> Jerk limited, optimal paths for non trivial kinematics is a very hard
> problem.  Putting a simple jerk limit on a simple machine is easy, Marlin
> does this on my 3D printer and it runs on an Aruino.
>
>
>
>
> On Sun, Aug 29, 2021 at 10:07 AM Curtis Dutton  wrote:
>
> > I'm not sure about all this yet, brainstorming here...
> >
> > After looking at TinyG code for handling jerk limitation in the joint
> > control it appears that they are using the forward physics equations and
> > numerically integrating to avoid violations.
> >
> > Since numerical integration needs to be used for jerk equations (as well
> as
> > snap crackle and pop...)  The forward kinematic equations will need to be
> > fed into the integrator for non trivial kinematics.
> >
> > The integrator should be pluggable as well. We should find an open source
> > library for this as numerical integration methods are always advancing
> and
> > high performance integration is not easy to implement.
> >
> >
> >
> >
> >
> > On Sun, Aug 29, 2021 at 11:55 AM Andy Pugh  wrote:
> >
> > >
> > >
> > > > On 29 Aug 2021, at 11:40, Alexander Brock  >
> > > wrote:
> > > >
> > > > The idea can be implemented in C and for simple cases like 1D
> funktions
> > > > it should be fairly straight-forward.
> > >
> > > My point is that the kinematics modules already exist, and  not all of
> > > them are under our control. Various users’ machines are out there with
> > > their own custom kinematics.
> > > Also, AFAIK if they are kernel modules then they have to be written in
> C.
> > >
> > > Hence my suggestion of calling the kinematics function repeatedly to
> > > perform simple numerical differentiation.
> > >
> > >
> > >
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>
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Re: [Emc-users] jerk control

[Rob C]

how is everyone working out jerk / jolt?

on a stepper motor you have a defined step or micro step (distance)

so if your acceleration is say 3000mm/s/s. (plasma cutter)

and you are driving a 20T mod 1 rack and pinion with a 3:1 ratio drive,
with a 200 step per rev stepper motor on 10uSteps

the distance traveled per step is 0.01047197551 mm

at 3000mm/s/s, the time that it takes from zero to the first step is

sqroot ( 2x distance / acceleration) = 0.0026422182 seconds

the jerk / jolt is therefore (acceleration X time for first step) >>> 3000
X 0.0026422182 = 7.92 mm/s/s/s

without the 3:1 ratio drive reduction, the jolt or jerk is
 13.72 mm/s/s/s. (or 1.73x greater than without a 3:1 ratio drive

I used to have my same machine set up with a direct htd 5m 20T belt drive
(ie each microstep was 0.05mm), with the same acceleration, the jolt or
jerk was 17.32 mm/s/s/s. although the belts were rubber and no doubt
some compression of the teeth and movement in the belts took place

Firstly I am trying to check my math is correct?



On Thu, 26 Aug 2021, 09:44 andy pugh,  wrote:

> On Thu, 26 Aug 2021 at 00:34, Alexander Brock 
> wrote:
>
> > There is an elegant way to compute exact derivatives without computing
> > analytical derivatives by hand. Here is a nice introduction:
>
> Is that applicable to the LinuxCNC kinematics functions? (Which are
> kernel modules written in C).
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1912
>
>
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Re: [Emc-users] jerk control

[Rob C]

how do they get it to work on the tiny g?

https://github.com/synthetos/TinyG/wiki/Jerk-Controlled-Motion-Explained

could we not adapt and improve on the code

On Mon, 23 Aug 2021, 15:32 Feral Engineer, 
wrote:

> As someone who uses functions like g8p1, g5.1q1 and g5p1 on mits/fanuc
> and cycle832 on Siemens, I can say that the need for high speed data
> processing functionality is pretty great. Although I don't know how
> Linuxcnc processes g code data, I do know that the aforementioned functions
> will buffer hundreds of lines of code and smooth the transitions between
> points to a certain degree of accuracy, much like calculating down to a
> nurb or spline instead of worrying about acc/dec on a point to point basis.
> Much like how lcnc has g64 with selectable accuracy, these functions offer
> selectable acc/dec settings that will either rattle your fillings or smooth
> out sharp corners to be razor perfect. I've not tried to run any of my lcnc
> machines at speeds that would make me see an eminent need for this
> functionality, but I'm sure it would be a welcomed addition.
>
> Phil T.
> The Feral Engineer
>
> Check out my LinuxCNC tutorials, machine builds and other antics at
> www.youtube.com/c/theferalengineer
>
> Help support my channel efforts and coffee addiction:
> www.patreon.com/theferalengineer
>
> On Mon, Aug 23, 2021, 10:17 AM Todd Zuercher 
> wrote:
>
> > To my lay persons eyes I would think it would be enough to jerk limit in
> > joint space.  The limiting in Cartesian space would then take care of
> > itself.
> >
> > As to the jogging question, does it matter?  Why would jogging have to
> > have the same acceleration limits as planned motion?  Set the jogging
> > limits to something safe and conservative that won't matter if they are
> > jerk limited.
> >
> > Todd Zuercher
> > P. Graham Dunn Inc.
> > 630 Henry Street
> > Dalton, Ohio 44618
> > Phone:  (330)828-2105ext. 2031
> >
> > -Original Message-
> > From: andy pugh 
> > Sent: Monday, August 23, 2021 4:50 AM
> > To: Enhanced Machine Controller (EMC) 
> > Subject: Re: [Emc-users] jerk control
> >
> > [EXTERNAL EMAIL] Be sure links are safe.
> >
> > On Mon, 23 Aug 2021 at 04:40, Chris Albertson  >
> > wrote:
> >
> > > Actually for a machine tool, why not run the simulation off-line and
> > > use as much time and computer power as it takes.
> >
> > Feed-override?
> >
> > Do you allow infinite jerk on abort? You might think that is an easy
> > question, except that continuous jog is implemented as a move to the
> limit
> > that is aborted on key release.
> >
> > And, do we need to jerk-limit in joint space or cartesian space, or both?
> >
> > --
> > atp
> > "A motorcycle is a bicycle with a pandemonium attachment and is designed
> > for the especial use of mechanical geniuses, daredevils and lunatics."
> > - George Fitch, Atlanta Constitution Newspaper, 1912
> >
> >
> > ___
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> >
> >
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> >
> >
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Re: [Emc-users] For Chris Albertson, question on bltouch

[Rob C]

https://grabcad.com/library/bl-touch-for-3d-printers-1

https://www.geeetech.com/wiki/index.php/3DTouch_Auto_Leveling_Sensor

any use?

On Thu, 19 Aug 2021 at 17:14, Gene Heskett  wrote:

> Greetings;
>
> I'm in the process of rebuilding the hot end of a failed CR10-S Pro V2,
> as the hot end supplied with cannot long tolerate PETG temps. Its too
> hot for the capriorn tubing when it goes all the way to the butt end of
> the nozzle.
>
> The E3D based stuff claims to goto 300-350C, and there is such an all
> metal hot end on the prusa Mk3S, and after refitting a new heat break,
> its working with PETG quite well.
>
> Haldis is making a volcano version of an E3D hot end, and selling the
> whole kit for $40 on amazon.
>
> I've designed, and am printiing the final fine tuned copy of a mount that
> fits on top of that, to support the Sherpa extruder driver, one of the
> lightest direct drives extant. So that will be assembled on the carriage
> in another 45 minutes.
>
> That leaves 2 open bolt holes above the side fans and the ones on the
> left could use used to fix the BLTouch in a similar position to where it
> was originaly. The BLTouch is the std nylon stinger model. But the
> volcano head is around 5 to 8mm taller than a stock hot end, meaing the
> BLTouch needs lowered by that amount.
>
> What I need is the measurement from the base of the BLTouch, to the glass
> bed surface at the point of the BLTouchs triggering.  Do you know of
> someplace (a URL) with drawings that define that distance? That would
> speed the design of a mounting for it in openscad by at least a day.
>
> Thanks Chris.
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
>  - Louis D. Brandeis
> Genes Web page 
>
>
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Re: [Emc-users] jerk control

[Rob C]

tormach did something to the planner, does anyone know what they paid for
it, and how / who they commissioned to do it?

On Tue, 17 Aug 2021, 18:57 Ralph Stirling, 
wrote:

> I've also been hoping to see this appear in a Linuxcnc update,
> as it has been worked on by a number of people for years.
> Here are the most recent threads about jerk-limited trajectory planning:
>
>
> https://forum.linuxcnc.org/24-hal-components/40152-jerk-limited-trajectory-planner-hal-component
>
>
> https://forum.linuxcnc.org/38-general-linuxcnc-questions/34666-c2-smooth-velocity-profile?start=0
>
> -- Ralph
> 
> From: David Berndt [ber...@uberwin.com]
> Sent: Tuesday, August 17, 2021 9:01 AM
> To: Enhanced Machine Controller (EMC); andrew beck
> Subject: Re: [Emc-users] jerk control
>
> CAUTION: This email originated from outside the Walla Walla University
> email system.
>
>
> I don't have a great need for it with my machines, or the time/brains to
> implement it. It just seems like a feature we really should have.
>
>   I'd be willing to participate monetarily in some sort of system to
> incentivize the inclusion of jerk control. Perhaps an open-source feature
> bounty? Does the community want to consider that sort of thing?
>
> -Dave
>
> On Mon, 16 Aug 2021 23:06:05 -0400, andrew beck 
> wrote:
>
> > hey guys
> >
> > I am sitting here watching my cnc mill atm its shaking quite a bit
> > acceleration is 600mm/sec2  which is not that high i think.  compared to
> > every other cnc mill i have used with a commercial controller.  they have
> > jerk control and work much better.  so looking forward to when we get
> > jerk
> > control here on linuxcnc!
> >
> > but in the mean time i need a poor mans jerk control and thinking of a
> > limit on the pid output to chop down the initial acceleration for the
> > first
> > moment in time just so little moves don't shake it to death
> >
> > andy mentioned that I could maybe use a limit component to limit the
> > initial acceleration for the first tiny moment in time to cut down on the
> > vibrations.
> >
> > how do you guys think that could work?
> >
> > Regards
> >
> > Andrew
> >
> > ___
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> >
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Re: [Emc-users] Lathe Spindle Drive Questions

[Rob C]

a motor is only rated at 5hp at its rated rpm.  5hp at 2500rpm, hence
it provides around 10.5 ft lb of torque

power = 2 X pi X N X T / 60

(sorry I think in metric to have to convert back and forth)

10.5. ft lb at 200 rpm is around 0.4 HP.

an AC motor (or DC motor, not servo / stepper) should not be run at very
low rpms, I believe the guidance is about 30% of its normal rated rpm,
given you need to still cool the windings. (search Google and do some
reading)

so at 2500rpm rated speed, you should not really go below 750rpm (you are
trying to run at 8 to 10%!)

a DC motor also is voltage proportional rated I am guessing that its
rated at 220V DC so at 200 rpm it will be running at about 17.6V.

if you switch to an AC drive with a VFD then your problem on minimum rpm
will be similar (have a search on Google about vfds and minimum rpm).

for full speed control use a servo (as I do) that will give you
full and precision control. again you are limited by the math of Power
= 2 x pi x N X T / 60



On Mon, 26 Jul 2021, 23:55 Earl Weaver,  wrote:

> Hi,
> I have a lathe spindle with 8 in. chuck that is run with a 5HP Reliance
> DC Motor and Reliance DC Drive.
> I just cannot get much power out of it at low RPM. Was trying to turn
> 8in OD steel, at approx. 200 -250 RPM with .005 in. cut. It didn't work,
> it just stalled.
> When I run it at low RPM the chuck rotation is movable, not firm.
> I can take a hold of the chuck and hold it and move it back and forth as
> it rotates.
> It also is more noisy at low RPM.
>
> This lathe is a Linuxcnc retrofit with J Elson's  Universal PWM
> Controller and DAC Spindle control.
> The DC drive has tachometer feedback from the motor.
> I have tried numerous times to adjust, tune the drive, without success.
> I also tried closed loop control from the spindle encoder within LCNC,
> also no success.
>
> So here come the questions:
> Should I keep trying to get this DC Drive working or would it be better
> to switch to  AC Variable Frequency Drive?
> If I would switch to AC VFD would 5HP AC Motor  be sufficient size for
> existing 1:1 ratio double v belt to drive 8" spindle chuck?
> What torque at low RPM can I expect for this 5HP DC motor? am I
> expecting to much from it?
> Would there be a better drive option for the existing DC motor?
> Any recommendations?
>
> Thanks,
> --
> Earl Weaver
> Email: weaverst...@frontier.com 
>
>
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Re: [Emc-users] Missing Features in LCNC for FFF/FDM Printers

[Rob C]

the 3d printer gcode is understandable, and you could handball simple
shapes (I've done a couple for various test and setup things). but you
would really struggle to do the infill as well as a slicer to still provide
strength and minimise infill

https://3dprinterly.com/what-is-the-best-infill-pattern-for-3d-printing/

being an additive process you couldn't run it through a mill. as it
sort of works in reverse (and you'd end up with a pocket if you flipped the
z direction)

but we sort of digress. from just running something like marlin to
running lcnc comparison as gcode is essentially just motion with a bit
of additional icing on top.

(if there was a board for Mesa hardware to take my tmc2209 drives (or I had
the time to interface one to a 7i92 I'm happy to convert my machine to
linuxcnc and run some cura gcode through it)


On Sun, 25 Jul 2021, 21:32 Martin Dobbins,  wrote:

> It is like the relationship of using CAD to design a part then using CAM
> to produce the g code to machine that part. Some people know enough about g
> code that they often don't use CAM, or are able to "massage" the output of
> CAM to produce different results.  Others may not care.
>
> CAD can also produce files for slicers (CAM) which produce g code for 3d
> printers which is apparently so complicated that no human being can
> understand it sufficiently to write their own code.  Yet it is the same g
> code fed to the components of a printer rather than (say) a milling machine.
>
> Martin
>
> 
> From: Rob C 
>
>
> is this not just reinventing the wheel for the sake of it?
>
> what is the benefit of using lcnc for fff/fdm printer?
>
> I am not trying to downplay the idea / application or lcnc or its
> capability.  (dispite it may appear so)
>
> 1, 18:55 Chris Albertson, 
> wrote:
>
> > 99% of the "magic" in 3D printing happens in the slicer.  All the printer
> > controller needs to do is move the steppers in a very stupid
> > way.Acceleration limits and such are all done in the slicer.  Notice that
> > the g-code files for some parts are MILLIONS of lines of g-code that do
> > very tiny movements
> >
> > I still argue that the only thing LCNC lacks is "works out of the box".
> >
> >
> >
> > On Sat, Jul 24, 2021 at 5:43 PM andy pugh  wrote:
> >
> > > On Sat, 24 Jul 2021 at 21:13, Bari  wrote:
> > > >
> > > > What are the missing desired or required features in LCNC for
> > > > controlling FFF/FDM printers?
> > >
> > > I have heard (but not tested) that extruder moves are not blended, so
> > > the motion is not as smooth as one might like.
> > >
> > > There might be something to be said for a G-code interpreter that used
> > > E as the extruder, and supported the other 3DP-specific codes.
> > >
> > > (LInuxCNC supports pluggable interpreters, this is doable)
> > >
> > > --
> > > atp
> > > "A motorcycle is a bicycle with a pandemonium attachment and is
> > > designed for the especial use of mechanical geniuses, daredevils and
> > > lunatics."
> > > — George Fitch, Atlanta Constitution Newspaper, 1912
> > >
> > >
> > > ___
> > > Emc-users mailing list
> > > Emc-users@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/emc-users
> > >
> >
> >
> > --
> >
> > Chris Albertson
> > Redondo Beach, California
> >
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> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
>
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Re: [Emc-users] Missing Features in LCNC for FFF/FDM Printers

[Rob C]

thanks Andy,

but Marlin does do Delta robots / configurations too (never used / set one
up myself)

https://marlinfw.org/docs/gcode/M665.html

On Sun, 25 Jul 2021, 21:04 Andy Pugh,  wrote:

>
>
> > On 25 Jul 2021, at 19:48, Rob C  wrote:
> >
> > what is the benefit of using lcnc for fff/fdm printer?
>
> One thing is kinematics. If you have a non-trivial kins then LinuxCNC can
> handle it.
>
>
>
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Re: [Emc-users] Missing Features in LCNC for FFF/FDM Printers

[Rob C]

is this not just reinventing the wheel for the sake of it?

what is the benefit of using lcnc for fff/fdm printer?

I am not trying to downplay the idea / application or lcnc or its
capability.  (dispite it may appear so)

I ask because I run marlin (free) with octoprint (octopi) (again free) on a
Bigtreetech-SKR 1.4 Turbo , with 5x TMC2209 stepper motor drives running as
uart input. (about £70)...
it runs 2x extruders and an XYZ 300x300x500 frame with a 230v heated bed.

it's not like I can replace marlin with lcnc on that setup / board?

so I'd need different hardware (at more cost and time to configure) and it
will probably generate the same output using the same slicer.

the acceleration is taken care of in the tmc2209 drives and is nothing to
do with the slicer (I use cura (again free plus seems to meet my needs))

to speed up my prints I use a larger nozzle, given most of the stuff I have
done has been biggish.

not adverse to using lcnc, just not seeing an advantage in cost, time to
build, assemble, programme or finished product.

what am I missing?



On Sun, 25 Jul 2021, 18:55 Chris Albertson, 
wrote:

> 99% of the "magic" in 3D printing happens in the slicer.  All the printer
> controller needs to do is move the steppers in a very stupid
> way.Acceleration limits and such are all done in the slicer.  Notice that
> the g-code files for some parts are MILLIONS of lines of g-code that do
> very tiny movements
>
> I still argue that the only thing LCNC lacks is "works out of the box".
>
>
>
> On Sat, Jul 24, 2021 at 5:43 PM andy pugh  wrote:
>
> > On Sat, 24 Jul 2021 at 21:13, Bari  wrote:
> > >
> > > What are the missing desired or required features in LCNC for
> > > controlling FFF/FDM printers?
> >
> > I have heard (but not tested) that extruder moves are not blended, so
> > the motion is not as smooth as one might like.
> >
> > There might be something to be said for a G-code interpreter that used
> > E as the extruder, and supported the other 3DP-specific codes.
> >
> > (LInuxCNC supports pluggable interpreters, this is doable)
> >
> > --
> > atp
> > "A motorcycle is a bicycle with a pandemonium attachment and is
> > designed for the especial use of mechanical geniuses, daredevils and
> > lunatics."
> > — George Fitch, Atlanta Constitution Newspaper, 1912
> >
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
>
>
> --
>
> Chris Albertson
> Redondo Beach, California
>
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Re: [Emc-users] A new lathe encoder option.

[Rob C]

I am guessing that these may therefore be an option too

http://trigger-wheels.com/store/contents/en-uk/d5.html

you can get custom ones / made to your measurements too

I went with a hollow shaft (40mm bore) encoder directly to the lathe spindle

one of these (or a variant of)
https://m.aliexpress.com/item/1180162296.html?trace=wwwdetail2mobilesitedetail

On Wed, 21 Jul 2021, 09:22 andy pugh,  wrote:

> On Tue, 20 Jul 2021 at 23:40, John Dammeyer 
> wrote:
>
> > There is no reason a second sensor couldn't be added to provide
> quadrature?
>
> It might work. I didn't test it.
>
> It only detects the gap when counting up. But other than that the use
> of quadrature is not specifically excluded.
>
> Shall we say that the behaviour in quadrature mode is "undefined"
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1912
>
>
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Re: [Emc-users] OT Fanuc!

[Rob C]

I know zero about fanuc conversion, but don't these boards from Pico
Systems sort the ability to reuse the servos

https://pico-systems.com/fanuc_pins.html

http://pico-systems.com/osc2.5/catalog/product_info.php?products_id=33


On Fri, 16 Jul 2021, 20:20 Todd Zuercher,  wrote:

> That decimal point issue can usually be turned on/off with parameter
> 3401.0.
>
> Todd Zuercher
> P. Graham Dunn Inc.
> 630 Henry Street
> Dalton, Ohio 44618
> Phone:  (330)828-2105ext. 2031
>
> -Original Message-
> From: Ralph Stirling 
> Sent: Friday, July 16, 2021 3:07 PM
> To: Enhanced Machine Controller (EMC) 
> Subject: Re: [Emc-users] OT Fanuc!
>
> [EXTERNAL EMAIL] Be sure links are safe.
>
> This Dura is a 2007 model.  I haven't tried G20 since we first got it
> going, so don't recall exactly what the issues were, but remember being
> very startled when all the offsets were suddenly wrong when G20 was called.
> Solution was instant and total metrification for cnc machining in my lab
> :-).  Since few of my students have any significant prior experience
> machining, they don't generally grumble about giving up "thou's".
>
> The other Fanuc quirk that catches them is forgetting decimal points on
> whole numbers.  X10 is 10microns not 10mm, while X10.0 is 10mm.  It's
> turned a few parts into big spiral chips on the finishing pass.
>
> -- Ralph
> 
> From: Feral Engineer [theferalengin...@gmail.com]
> Sent: Friday, July 16, 2021 11:55 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] OT Fanuc!
>
> CAUTION: This email originated from outside the Walla Walla University
> email system.
>
>
> On the dura, is the issue that it just moves the decimal instead of
> converting the values? That's just a parameter change.
>
> I don't recall the dura using tc controls, i thought those started with td?
> I may be wrong, it's been a while since i saw one of those in the wild.
>
> Phil T.
> The Feral Engineer
>
> Check out my LinuxCNC tutorials, machine builds and other antics at
>
> https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.youtube.com%2Fc%2Ftheferalengineer&data=04%7C01%7Cralph.stirling%40wallawalla.edu%7Cc0601cb995c746d1254208d9488b64bb%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C637620585800384160%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=hi3Npyz8PDJOx5pMdcjpSmFxPqukb6BewMMBEFJTGRo%3D&reserved=0
>
> Help support my channel efforts and coffee addiction:
>
> https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.patreon.com%2Ftheferalengineer&data=04%7C01%7Cralph.stirling%40wallawalla.edu%7Cc0601cb995c746d1254208d9488b64bb%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C637620585800384160%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=%2FpEs5khf51sB%2Bo3s2qOcL6ri5AKPL%2BbHHMNQOWG9F98%3D&reserved=0
>
> On Fri, Jul 16, 2021, 2:21 PM Ralph Stirling <
> ralph.stirl...@wallawalla.edu>
> wrote:
>
> > I forbid G20 on the Mori Duraturn in my lab for that exact reason.  It
> > has a Fanuc 0i-TC.  I figure 21st century engineering students should
> > develop some feel for metric measurements anyway.  Just to be safe I
> > also require
> > G21 on our Mori NVX mill even though it uses a Mits control that
> > handles it better.
> >
> > -- Ralph
> >
> > On Jul 16, 2021 9:11 AM, Todd Zuercher  wrote:
> > CAUTION: This email originated from outside the Walla Walla University
> > email system.
> >
> >
> > I need to voice some frustration.  So pardon the OT post
> >
> > Fanuc is making me pull my hair out.  You'd think a cnc control built
> > within the last 20 years could handle switching between G20 and G21
> modes!
> > It's a flippin command line code that can be issued in a file for
> > goodness sakes!
> >
> > We bought a used machine that was being used in G21 mode.  And I've
> > been banging my head on this thing for a week.  Can't figure out why
> > all of the work coordinates are so screwed up, reset them and then
> > they are messed up again, G91G28 commands won't work and keep over
> > traveling (but G90G53 does) and the home positions keep moving around.
> > Turns out its all because a stupid Fanuc 180iM control built in 2003
> > can't handle switching between G21 and G20 modes without 3 power
> > cycles, a couple of parameter changes and completely resetting all the
> > work coordinate systems settings.  FOR REAL!!  Even Mach3
> > can do this right! If this is the case why even have G20/G21 available
> > as a G-code! It should only be a parameter setting that can't be
> > changed from a file.  This is even more annoying than
> > G92 or jogging a paused program, at least a power cycle can fix those
> > screw ups.
> >
> > Todd Zuercher
> > P. Graham Dunn Inc.<
> > https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.p
> > grahamdunn.com%2Findex.php&data=04%7C01%7Cralph.stirling%40wallawa
> > lla

Re: [Emc-users] OT Fanuc!

[Rob C]

rip it out an put linuxcnc in?

is it possible to build a plugin replacement controller?

On Fri, 16 Jul 2021, 17:20 Feral Engineer, 
wrote:

> The 180i is an earlier windows version of a Fanuc, so I'm sure it's got
> some quirks 😅
>
> Phil T.
> The Feral Engineer
>
> Check out my LinuxCNC tutorials, machine builds and other antics at
> www.youtube.com/c/theferalengineer
>
> Help support my channel efforts and coffee addiction:
> www.patreon.com/theferalengineer
>
> On Fri, Jul 16, 2021, 12:14 PM Todd Zuercher 
> wrote:
>
> > I need to voice some frustration.  So pardon the OT post
> >
> > Fanuc is making me pull my hair out.  You'd think a cnc control built
> > within the last 20 years could handle switching between G20 and G21
> modes!
> > It's a flippin command line code that can be issued in a file for
> goodness
> > sakes!
> >
> > We bought a used machine that was being used in G21 mode.  And I've been
> > banging my head on this thing for a week.  Can't figure out why all of
> the
> > work coordinates are so screwed up, reset them and then they are messed
> up
> > again, G91G28 commands won't work and keep over traveling (but G90G53
> does)
> > and the home positions keep moving around.  Turns out its all because a
> > stupid Fanuc 180iM control built in 2003 can't handle switching between
> G21
> > and G20 modes without 3 power cycles, a couple of parameter changes and
> > completely resetting all the work coordinate systems settings.  FOR
> > REAL!!  Even Mach3 can do this right! If this is the case why
> > even have G20/G21 available as a G-code! It should only be a parameter
> > setting that can't be changed from a file.  This is even more annoying
> than
> > G92 or jogging a paused program, at least a power cycle can fix those
> screw
> > ups.
> >
> > Todd Zuercher
> > P. Graham Dunn Inc.
> > 630 Henry Street
> > Dalton, Ohio 44618
> > Phone:  (330)828-2105ext. 2031
> >
> >
> > ___
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> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
>
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Re: [Emc-users] Lathe 'topslide' component

[Rob C]

I'm interested, thanks Les

Rob / Robertspark

On Mon, 12 Jul 2021, 18:08 Les Newell,  wrote:

> A while back I wrote a component for a simulated top slide for lathes
> with dual MPGs. It allows you to enter an angle and remap the X axis MPG
> to move both axes simultaneously at that angle. I use it quite a bit for
> chamfering. At the press of a button I can swap from normal X-Z to X
> moving the cutter at 45 degrees (or whatever angle).
>
> Is this of any interest to any one else?
>
> Les
>
>
>
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Re: [Emc-users] Usefulness - was Re: OT: 3D Printer Mods?

[rob c]

Try the RepRap open source printer, last i checked you can buy a fully built 
machine for about $600. Also it is open source.
Have you ever broken a plastic part? 
With a 3D printer you can fix things, dream and make your dream real.

> From: mai...@mah.priv.at
> Date: Thu, 31 May 2012 01:05:10 +0200
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Usefulness - was Re:  OT: 3D Printer Mods?
> 
> 
> Am 30.05.2012 um 21:55 schrieb John Stewart:
> 
> > Kent;
> > ..
> > So while I wander past the rapidly increasing number of 3D printers at 
> > SIGGRAPH, for instance, I currently can't find a use for one that I can 
> > afford to have @home.
> 
> might be the wrong trade show
> 
> have a look dental work, or moldmaking in the jewelry trade
> 
> -m
> 
> 
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Re: [Emc-users] OT: 3D Printer Mods?

[rob c]

Roland, in your view do you see EMC being a CAM software? 
It actually isn't. 
Also you don't necessarily produce better parts using a 2.5D mill, remember a 
3D printer is a Milling machine, the only thing different being the spindle is 
now a deposition head of some form.
Really you will only get the accuracy you program for, remember you can rough 
out a part.
And what does a person do with the printed part you ask? Well many companies 
use them to construct conceptual parts, this is called a prototype. hobbyists 
use the printer to replace broken plastic parts, or to make enclosures, maybe 
even just design a prototype for themselves.
You are also one of the few people I hear complain about the resolution, last i 
checked .1 mm is pretty darn fine, I bet you can't carve to that detail.
Roland, unless you have used a 3D printer that extrudes plastic or metal, you 
really shouldn't knock it.

> From: roland.jolli...@gmail.com
> Date: Wed, 30 May 2012 19:29:07 +0200
> To: emc-users@lists.sourceforge.net
> Subject: [Emc-users]  OT: 3D Printer Mods?
> 
> On 30 May 2012 19:06, Joseph Chiu  wrote:
> 
> > Having a ToM 3D printer, and having done hobbyist CNC work with a
> > 3-axis mill, I have to say that FDM 3D printing lets me try out a
> > number of ideas that are much harder or impossible to cut with a
> > 3-axis CNC.  The most obvious examples are cutting "figurines", where
> > there are features that would not be reachable by a cutter constrained
> > to a single axis.  The other "advantage" is the ability to make pieces
> > that are "hollowed out" (done in FDM process to minimize material
> > usage) -- which has a nice side effect of making things lighter (by
> > adjusting the "fill" rate, you can determine how much material
> > rigidity you give up).
> >
> > With newer printers able to get .1 mm or smaller layer heights, the
> > surface quality issues are much less objectionable, too.
> >
> > Obviously, for "2.5D" work, milling parts out of sheets yield a much
> > nicer result.
> >
> > Finally, the one last nicety of 3D printers is that you normally don't
> > have to setup your job as you do with machining processes.  You just
> > "print" onto an empty print bed, and come back to a finished part.
> >
> >
> The thing is, what do you do with these parts? While I fully appreciate the
> value of the learning, especially for children, people using EMC are
> perforce versed in CNC milling.
> 
> Also, filament printing is not to confused with the valuable printing of
> sinterable metals or other resinoid methods. I'm talking specifically about
> the filament stuff. True, it looks something like the cad drawing, but then
> what? Maybe for me, the penny hasn't dropped yet.
> 
> Regards
> Roland
> 
> 
> 
> 
> 
> 
> > On Wed, May 30, 2012 at 12:51 AM, Roland Jollivet
> >  wrote:
> > > Hi Alex
> > >
> > > Do you mind saying what you are printing, and if you feel the printing
> > is a
> > > worthwhile exercise? I've been looking at different printers for months,
> > > but they only seem to be able to produce junk. Cnc'ing it out of a block
> > of
> > > plastic looks far more effective.
> > >
> > > Regards
> > > Roland
> > >
> > >
> > > On 29 May 2012 18:22, Alex Hunt  wrote:
> > >
> > >> Hi Jeshua,
> > >>
> > >> I mounted a "Wade" type extruder to my gantry router and have been 3D
> > >> printing with LinuxCNC for about 6 months now.  The extruder thermal
> > >> control is managed by RepRap firmware on an Arduino.  I have to manually
> > >> set the temperature of the extruder before printing, but it works.  I
> > have
> > >> a Mesa 5i20 card for control with 2M542 motor drivers, but the extruder
> > >> driver is a simple single chip stepper driver.
> > >>
> > >> My intent was to close the thermal loop with a thermocouple to PWM
> > circuit,
> > >> but I'm not there yet.  Sending serial port commands from LinuxCNC would
> > >> automate my current setup better, so please let me know if you make any
> > >> progress on that.
> > >>
> > >> When you get your hardware ready to go, I might be able to help you
> > smooth
> > >> over some of the speed-bumps getting started.
> > >>
> > >> Regards,
> > >> Alex Hunt
> > >>
> > >> On Tue, May 29, 2012 at 12:00 AM, Jeshua Lacock 
> > wrote:
> > >>
> > >> >
> > >> > Greetings all,
> > >> >
> > >> > I have been dreaming of making a removable plastic extruder nozzle
> > for my
> > >> > machine. It would turn it into a *huge* 3D printer.
> > >> >
> > >> > So I read this page with great interest:
> > >> >
> > >> > http://www.thingiverse.com/thing:5233
> > >> >
> > >> > Is it possible to make those changes to LinuxCNC? In other words, can
> > >> > LinuxCNC currently command a serial port using those additional M
> > words?
> > >> >
> > >> > If not, I would be willing to write some code and commit it. Some
> > advice
> > >> > to help me get started would be extremely helpful as I have never
> > looked
> > >> at
> > >> > the branch.
> > >> >
> > >> >
> > >> > Thanks,
> > >> >
> >
> >
> --

Re: [Emc-users] 3D Printer Mods?

[rob c]

Yes Adam, EMC is Linux CNC. It is a Linux Ubuntu OS with EMC incorperated into 
it. Unfortunatly this is not an Electronics solution, it is however a part of 
the software solution. 
You still need a way to interface the outside world with it, and that is where 
the problem lies when trying to connect a nozzle in place of a spindle.
 

> Date: Tue, 29 May 2012 22:02:12 +0200
> From: adamo...@gmail.com
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] 3D Printer Mods?
> 
> W dniu 29.05.2012 21:45, Joachim Franek pisze:
> > On Tuesday 29 May 2012 20:19:26 Adam Okon wrote:
> >> You have almost ready solution with electronics and soft for EMC2 (now
> >> called LINUXCNC):
> >>
> >> http://www.thingiverse.com/thing:6480
> >>
> >> Yours
> >> Adam Okon
> >>
> >
> > Someone can do a makefile for Adam's software?
> 
> The software is not mine. I am just pointing it out.
> 
> Adam
> 
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Re: [Emc-users] 3D Printer Mods?

[rob c]

Jeshua Lacock pisze:
 
If your looking for something simple try using the Generation-6, RAMPS, or any 
Atmega based hardware along with some Opto limit switches. All you have to do 
from there is set the machine paramiters using the Firmware configuration.h 
file.
The firmware can be "Teacup" "Sprinter" "Marlin" and the control software can 
be anything including EMC Linux CNC, but most people use Sprinter or 
ReplicatorG. 
EMC is alot like Mach3, it sends pulses to a parallel port either a COM or DB25 
style but with the TFID chip you can connect your device using a USB port. You 
will need to write a post or something to have EMC function properly, I will 
look into it and post what I find. I have been trying to do this with Mach3 for 
a while now with no luck, however I can read from a txt file containing G code 
and have Arduino run three steppers without any sheild.
 

> Date: Tue, 29 May 2012 20:19:26 +0200
> From: adamo...@gmail.com
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] 3D Printer Mods?
> 
> You have almost ready solution with electronics and soft for EMC2 (now 
> called LINUXCNC):
> 
> http://www.thingiverse.com/thing:6480
> 
> It is working, you should study www.reprap.org for *.openscad -> *.stl 
> -> *.gcode tools or we can help you.
> 
> Yours
> Adam Okon
> 
> 
> 
> 
> 
> 
> W dniu 29.05.2012 07:00, Jeshua Lacock pisze:
> >
> > Greetings all,
> >
> > I have been dreaming of making a removable plastic extruder nozzle for my 
> > machine. It would turn it into a *huge* 3D printer.
> >
> > So I read this page with great interest:
> >
> > http://www.thingiverse.com/thing:5233
> >
> > Is it possible to make those changes to LinuxCNC? In other words, can 
> > LinuxCNC currently command a serial port using those additional M words?
> >
> > If not, I would be willing to write some code and commit it. Some advice to 
> > help me get started would be extremely helpful as I have never looked at 
> > the branch.
> >
> >
> > Thanks,
> >
> > Jeshua Lacock
> > Founder/Engineer
> > 3DTOPO Incorporated
> > 
> > Phone: 208.462.4171
> >
> >
> > --
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> > threat landscape has changed and how IT managers can respond. Discussions
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> > ___
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> > https://lists.sourceforge.net/lists/listinfo/emc-users
> > .
> >
> 
> 
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Re: [Emc-users] 3D Printer Mods?

[rob c]

I use Generation-6 electronics, it has an Atmega chip like Arduino. The most 
recomended is RAMPS, this is the Arduino Mega with a stepper sheild.
The firmware is good because it gives you an idea of how things work. It is 
written in "C" language. 
 

> From: joachim.fra...@pibf.de
> To: emc-users@lists.sourceforge.net
> Date: Tue, 29 May 2012 18:34:59 +0200
> Subject: Re: [Emc-users] 3D Printer Mods?
> 
> 
> Joachim 
> 
> On Tuesday 29 May 2012 18:22:00 Alex Hunt wrote:
> > I mounted a "Wade" type extruder to my gantry router and have been 3D
> > printing with LinuxCNC for about 6 months now. The extruder thermal
> > control is managed by RepRap firmware on an Arduino. 
> 
> Which type of Arduino hardware do you use?
> 
> see also:
> http://reprap.org/wiki/EMCRepRap
> 
> Joachim 
> 
> 
> 
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[Emc-users] Join the 3D Printer Revolution

[rob c]

For a Windows Software Solution try http://whatisacnc.com/sprinter/ 

How does EMC control a 3D Printer? I love the software for Milling!!

  
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[Emc-users] Something for the 3D printer

[rob c]

http://whatisacnc.com/sprinter a simple install bundle for a windows system.
  
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[Emc-users] Sprinter Easy Install tool for 3D Printer

[rob c]

For anyone interested in a simple install tool for a open source 3D printer try 
http://whatisacnc.com/sprinter/ 
It is a little unrelated to EMC but figured someone maybe interested.
I have been fooling around with a program for Arduino and will post a link to 
the program when finished, the goal is to have Arduino work with EMC or Mach3 
without the need for any other IC's or boards, simply plug the Arduino into the 
computer after attaching some drivers to the Micro-Processor and do the rest in 
Mach3.
For now we have an install tool for any Atmega board used to run a 3D printer, 
updates are ongoing and a new version will be made available mid month (May 
2012) everyone who has registered will be supplied a copy immediatly after 
launch, again for anyone interested please check out 
http://whatisacnc.com/sprinter/ 
 
Thanks 
 
Rob
 
http://www.whatisacnc.com 
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[rob c]

You don't need an Oscilloscope to determine if your power supply is faulty, 
also you can check to continuity of all your wires using a simple multimeter.
Keep it simple.
Again what kind of Encoder are you using?
Rob
http://www.whatisacnc.com  

> From: parallel.kinemat...@gmail.com
> Date: Tue, 17 Apr 2012 19:10:26 +0300
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors
> 
> 17 квітня 2012 р. 16:50 Peter C. Wallace  написав:
> 
> > Flat cable problems? The fact that the encoder inputs on the 7I39 do not
> > work for you means something is wrong either on the 7I39s or the
> > interconnections to the 7I43
> >
> 
> The cable is probably OK. I bought 2 of them and no one works. And the
> cable uses 2 completely pairs of wires for encoder 0 and 1. Very unlikely
> that all these wires damaged. And some kind of signal was going to 7i43, so
> they're can't be broken. The same with 2 7i39s, none of 2 do not work.
> Something might be wrong with the power supply from 7i48 to 7i39, but the
> power LED is on, and when I connect 7i48 to the same 7i43 with the same
> cable - all OK.
> Feels like I'm stuck completely, at least till my oscilloscope arrives
> (maybe 2 weeks). Also feels like both 7i39 might be damaged - in the worst
> case.
> 
> 
> 17 квітня 2012 р. 16:28 rob c  написав:
> 
> > So the 7i39 is a brush less DC motor, if your trying to see if the motor
> > it self is functional just hook it up to a DC power supply, 12V would do
> > just fine, if it rotates regardless of polarity the motor is good and you
> > need to move onto the electronics.
> >
> 
> BLDC motor won't rotate when connected to DC, unlykely to brushed DC motor.
> But it jerks, that's enough to see it's OK.
> In my case it's HIWIN linear DC motor, it just moves to a certain point
> when connected to DC.
> 
> What are you hooking the encoder to? What kind of encoder is it?
> 
> 
> It's linear incremental quadrature encoder, connected to MESA 7i39 card (dual
> 3 phase bridge driver for brushless 3 phase motors).
> 
> Andrew
> --
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[rob c]

So the 7i39 is a brush less DC motor, if your trying to see if the motor it 
self is functional just hook it up to a DC power supply, 12V would do just 
fine, if it rotates regardless of polarity the motor is good and you need to 
move onto the electronics.
What are you hooking the encoder to? What kind of encoder is it?

> From: parallel.kinemat...@gmail.com
> Date: Tue, 17 Apr 2012 09:21:20 +0300
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors
> 
> 17 квітня 2012 р. 03:24 Peter C. Wallace  написав:
> 
> > What I am asking is if the 7I39 encoder inputs work normally now
> > If not, this still suggests a wiring error of some kind
> >
> 
> I test only X axis now. The encoder is connected to 1 (A) and 3 (B) wires
> of ribbon cable, and it works on X axis. The cable connects 7i43 (P4) to
> 7i39.
> The motor is connected to bottom right connector on 7i39, from bottom to
> top: Ground, U, V, W.
> Top left corner orange LED on 7i39 lights, as well as bottom green LED
> among 5. When I start the machine, the middle orange LED of 5 lights too. I
> guess 7i39 receives power well. Absolutely no idea what can be wrong.
> BTW manual shows 1+5 leds but only 5 described.
> 
> Andrew
> --
> Better than sec? Nothing is better than sec when it comes to
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Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors

[rob c]

In the case the 7I39 motor is a stepper?, you should never hook a stepper motor 
up directly to a power supply it will destroy the motor. If you have encoders 
you need a micro-controller. Using the encoder in your circuit is called a 
closed loop system you need to read back to something like Arduino, you are 
correct if the encoder is not working you can troubleshoot by checking your 
wire connections. 

> From: parallel.kinemat...@gmail.com
> Date: Tue, 17 Apr 2012 03:00:48 +0300
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] BLDC on 7i43 + 7i39 + linear motors
> 
> 17 квітня 2012 р. 02:27 Peter C. Wallace  написав:
> 
> > What is the 7I39 motor voltage ?
> >
> > What are the motor ratings (current /voltage)?
> >
> > Do the encoders work now (because not working  encoders suggests a
> > wiring/cable error)
> >
> 
> I give 44V to 7i39. But tomorrow I better use 24V PSU.
> Calculated motor voltage is near 45-50V at 1m/s, peak current is 4.5A.
> The motor jerks very strong when I touch its wires to power line.
> Encoders work (not in this short config, of course).
> 
> Along with strange encoders that might look like 7i39 malfunction, but 2
> broken cards... not probable.
> 
> 17 квітня 2012 р. 02:27 andy pugh  написав:
> 
> > Anything in dmesg?
> >
> 
> Nothing particular. No errors, just pins and usual loading messages.
> 
> Thanks Andy and Peter. I'll try again tomorrow.
> 
> Andrew
> --
> Better than sec? Nothing is better than sec when it comes to
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