Re: [Emc-users] black list aliexpress

[Dave Matthews]

We had some training on traveling wave amplifier tubes, referred to as TWAT
tubes back in Nike Hercules tech school in 1977.

Dave
ex MOS 22L

On Tue, Mar 19, 2024 at 4:35 PM gene heskett  wrote:

> On 3/19/24 14:15, Robin Szemeti via Emc-users wrote:
> > I purchased a couple of large travelling wave tube amplifiers in an
> > auction.  I phoned the US company to ask about schematics and a manual
> ...
> > "can we have the serial numbers please?"  ... "sure ... " "great and what
> > date did you sign the ITAR agreement?" 
> >
> I presume they've been disposed of in unsalvagable condition...  Like if
> glass, smashed into small pieces by a 16 lb sledge. If they ever trace
> them to you, pix of the destruction may help. But not if ceramic body's
> instead of glass. Any dust from destroying them is lung cancer seed.
> Very 100% dangerous. Do not break, grind or file.
>
> And that auction has been advised of its illegality.  It is a tech
> similar to klystrons but with a more distrituted and much broader band
> applications that because of ITAR has faded away into a technical info
> vacuum. I've not heard of a twt since the cold war warmed up in the late
> 50's and we started building ICBM's in everybody's back yard. I was
> there, help build 3 titan ones in the middle of nowhere South Dakota.
>
> > On Mon, 18 Mar 2024 at 17:45, gene heskett  wrote:
> >
> >> On 3/18/24 11:28, Todd Zuercher via Emc-users wrote:
> >>> Gene,
> >>>
> >> Well 2 things I've observed since posting that, Todd. the pix is
> >> identical for a 3 kilohertz version on amazon for about the same price,
> >> once adjusted to us dollars . So I'm wondering if aliexpress added an
> >> extra 0, they rarely know what they are selling anyway.
> >>
> >> And since it showed up on amazon too, I'm wondering if the ITAR rules
> >> have been relaxed.
> >>
> >> Here is the highest HP rated amazon offering. 15kw 20hp for about $1200:
> >> <
> >>
> https://www.amazon.com/Mollom-220V-15KW-20HP-Frequency/dp/B0CQBZ4FZN/ref=sr_1_52?crid=30GVV1U3R7JUA=eyJ2IjoiMSJ9.5mKofR2CvOgdLO3tCtLjmKysBbvC8T8oTt4SNyV7-PqBQ6UsvOrsvyppX7rBUpjT2IZZ2mAWKRkL0H1nJj5MGcPBTDsP2EbqZePAsB09iFXxVTemY7Dr4c-fOZHZLdaaBQulJLMrOYJl5bQBZyyubX0LkNc-DuFlyrVam8hlnFXUx5O0mASax2WBIToQk1TnTgzTo9aSvbn0kcp1wxgKUbqJsSefz-wM0iZmaooVN5zTcqmgr8SzJWLCsHsviwy3aYCLB0dDN-JFW7Rw6Cp1GUTSqURhr6UCPywhkuSnYI0.1sKFN_5H6kH9Ju3mlK1mAlKX2LaJ6eM0Et-7LWB83CI_tag=se=high+speed+high+horsepower+vfd=1710778937=high+speed+high+horsepower+vfd%2Caps%2C82=8-52=app_do%3Aamzn1.fos.765d4786-5719-48b9-b588-eab9385652d5
> >>>
> >>
> >> I'd think that could run your 4 pole motor at 800hz just fine. UNK and
> >> unstated in the adv is the control range so I would scale the 3k range
> >> so max from the controller would only get you the rated speed at the
> >> motor. But I don't have to tell you that, you've been dealing with those
> >> sorts of problems with that machine for long enough this ought to be the
> >> best answer.  Sometimes this is self limiting, higher frequencys run
> >> into the motors inductance, coil current falls and the motor actually
> >> slows down, my Sheldons max usable speed while running a 70 yo motor
> >> that never saw a vfd until me is about 200 hz as the coil current is
> >> under an amp at 200 hz. 3.7 amps at 60 hz. OTOH it can run it at 5hz
> >> long enough to finish the job and still lay my hand on that motor w/o
> >> discomfort from the heat.
> >>
> >> As for needing a new one, the usual failure is going to be the line
> >> stage filter caps which often will have a note in the docs someplace to
> >> the effect that they should be replaced at 5 year intervals, however the
> >> smaller ones that don't have braking resistors are actually 4 quadrant
> >> controllers, meaning a quick reversal will overvolt those filters for a
> >> few milliseconds as they do the reversal, they suck that power out of
> >> the motor stopping it, storing it as overvoltage in those filters, then
> >> as soon as the new direction is applied use that stored energy to spin
> >> the motor back up in the other direction, so the overvoltage is not
> >> present long enough to damage them, but actually contributes to
> >> maintaining the "forming" of those caps so they live longer. The 1.5 hp
> >> rated el-cheapo clone running the 1 hp in my Sheldon lathe is now around
> >> 9 years old and can still reverse that motor and its 40lb 8" 4 jaw chuck
> >> in under 1/3 second at 100 revs. Overshoot at 100 revs is .24 turns from
> >> 100 rpm to stopped. And the shop lights don't blink. Its all in the .hal
> >> file if interested. No circuit breakers in any danger of tripping as all
> >> the excitement is in the vfd and doesn't involve the wall power. Just
> >> give me a yip.
> >>
> >> These aren't toy's, they can kill, so give them the respect such killers
> >> deserve. But I don't have to tell YOU that.
> >>
> >> Take care & stay well Todd.
> >>
> >>> In all honesty I wouldn't mind knowing more about your VFD source you
> >> say you 

Re: [Emc-users] Run Fusion 360 on LInux

[Dave Matthews]

I may be able to get an educational in January.  NY allows people over 60
to audit courses in state colleges for free.  I am signing up for a couple
manual machining courses at Monroe Community College in Rochester.  Not
sure if they are Fusion or Solidworks.  I want to get a better handle on my
new mill and my old lathe.

Dave

On Fri, Dec 1, 2023 at 12:42 PM Thaddeus Waldner  wrote:

> Yeah, I saw this after I posted. I use an educational account.
>
> Cheapest option that works appears to be “startup” at $150/3 years.
>
>
>
> > On Dec 1, 2023, at 9:31 AM, Dave Matthews  wrote:
> >
> > Unfortunately not available to the hobbyist level account.  Commercial
> and
> > Education only.  I go this when I logged in:
> > Autodesk Education or Commercial Account Required
> > Dave
> >
> > On Fri, Dec 1, 2023 at 9:26 AM Thaddeus Waldner  <mailto:thadw...@gmail.com>> wrote:
> >
> >> I’m not sure if you’ve seen this, but Fusion 360 now has a
> run-in-browser
> >> mode. It appears the same thing as the desktop app, which I believe was
> >> just a browser-based app in the first place. It will run on Linux.
> >>
> >> You can find it here:
> >>
> >> https://fusion.online.autodesk.com/
> >>
> >> Be advised that Fusion 360 is a processor and memory-intensive program.
> It
> >> starts at about 5gb and goes up from there.
> >>
> >> If you use Chrome (or safari on a Mac), you can free up the screen space
> >> used by the browser tabs, address bar, shortcuts, etc. by saving the
> >> address as web app that runs in its own window
> >>
> >> In Chrome, click on menu (the three dots)->more tools->create shortcut …
> >> give your shortcut a name and check the box that reads “Open as Window.”
> >>
> >> Does Firefox have a similar feature?
> >>
> >>
> >>
> >>
> >> ___
> >> Emc-users mailing list
> >> Emc-users@lists.sourceforge.net <mailto:Emc-users@lists.sourceforge.net
> >
> >> https://lists.sourceforge.net/lists/listinfo/emc-users
> >>
> >
> > ___
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> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
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Re: [Emc-users] Run Fusion 360 on LInux

[Dave Matthews]

Unfortunately not available to the hobbyist level account.  Commercial and
Education only.  I go this when I logged in:
Autodesk Education or Commercial Account Required
Dave

On Fri, Dec 1, 2023 at 9:26 AM Thaddeus Waldner  wrote:

> I’m not sure if you’ve seen this, but Fusion 360 now has a run-in-browser
> mode. It appears the same thing as the desktop app, which I believe was
> just a browser-based app in the first place. It will run on Linux.
>
> You can find it here:
>
> https://fusion.online.autodesk.com/
>
> Be advised that Fusion 360 is a processor and memory-intensive program. It
> starts at about 5gb and goes up from there.
>
> If you use Chrome (or safari on a Mac), you can free up the screen space
> used by the browser tabs, address bar, shortcuts, etc. by saving the
> address as web app that runs in its own window
>
> In Chrome, click on menu (the three dots)->more tools->create shortcut …
> give your shortcut a name and check the box that reads “Open as Window.”
>
> Does Firefox have a similar feature?
>
>
>
>
> ___
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Re: [Emc-users] CNC machining setup cards

[Dave Matthews]

I don't know if Thailand falls under the ITAR rules but they may be what
you are hitting.  If you can't install it you probably can't run it
either.  Autodesk loves the cloud and calling home.

Dave

On Wed, Jul 5, 2023, 22:41 Thomas J Powderly  wrote:

> thc all
>
> but the question said _get_
>
> not how to VBox or Wine  or...
>
> Thx but ity seems hard to __get__
>
> Now I've followed Dave's url and it doesnt work... due to my location.
>
> Dave
>
> Thanks, I think I cant complete the download becasue I am in Thailand
>
> The origin of the request is in a country not allowed (afaict)
>
> Tried my US addr and my Thai addr, trued FFox and Cgromium.
>
> I think Thailand requests are banned/
>
> ( the download ends immediately with a 'if unsuccessful,please try again'
>
> and wasj rinse repeat just doent work
>
> a VPN may help , i dunno.
>
> thxx
>
> tomp
>
> On 7/6/23 07:16, Chris Albertson wrote:
> >
> >> On Jul 5, 2023, at 11:36 AM, gene heskett  wrote:
> >>
> >> On 7/5/23 13:29, Thomas J Powderly wrote:
> >>> Since this thread has 'evolved' into free 3D modeling software...
> >>> Can I ask how to get Fusion 360 on a Linux box?
> >>> I remember several failed tries but I font recall why.
> >>> LinuxCNC community people seem to really like it,
> >> That seems to be true, but it is not free anymore. So I'm making parts
> for stuff on 3d printers using OpenSCAD as the design software.  You can be
> productive quite rapidly in it.
> > What?   Fusion 360 is still free for personal use or even for commercial
> use as long as the bussines makes less than $50K.
> >
> > If you want 3D CAD software that can run on Linux then you could try
> > 1) FreeCAD,  Not unlike Fusion 360 but is mre limited and lacks
> sophisticated manufacturing ability
> > 2) OnShape,  Online, runs in a web browser and nit somewhat like FreeCad
> but has ZERO manufacturing ability
> > 3) OpenScad.  Good for very geometric designes that can be described in
> a modeling language.  Good for gears, bushing and such but VERY poor if you
> wanted to maybe make a car body part or a motorcycle engine cover
> >
> > If the goal is to convert STL files to “real” CAD drawings that can be
> edited.   Fusion is your best bet and even then you have to do a lot of
> manual work
> >
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
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Re: [Emc-users] CNC machining setup cards

[Dave Matthews]

Fusion 360 is still free for personal use.  The limit is $1000 in sales.
The do defeature some parts like rapids in tool paths.

https://www.autodesk.com/products/fusion-360/personal

Dave

On Wed, Jul 5, 2023 at 2:40 PM gene heskett  wrote:

> On 7/5/23 13:29, Thomas J Powderly wrote:
> > Since this thread has 'evolved' into free 3D modeling software...
> >
> > Can I ask how to get Fusion 360 on a Linux box?
> >
> > I remember several failed tries but I font recall why.
> >
> > LinuxCNC community people seem to really like it,
>
> That seems to be true, but it is not free anymore. So I'm making parts
> for stuff on 3d printers using OpenSCAD as the design software.  You can
> be productive quite rapidly in it.
> >
> > TIA
> >
> > tomp
> >
> >
> > On 7/5/23 21:44, gene heskett wrote:
> >> On 7/5/23 06:50, Gregg Eshelman via Emc-users wrote:
> >>>
> >>> This one has direct download links https://united3dartists.com/
> >>>
> >> That appears to be a windows program. Windows is extinct here. ;o)>
> >> Thank you.
> >>>
> >>> On Tuesday, July 4, 2023 at 11:44:50 AM MDT, gene heskett
> >>>  wrote:
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> On 7/4/23 08:03, Gregg Eshelman via Emc-users wrote:
>  Caligari trueSpace can import STL and it can save to a wide range of
>  formats.
> >>>
> >>> No thanks for the link Greg, every button on that page leads to a porno
> >>> dl with no exit buttons in sight. Its been compromised, probably by M$.
> >>>
> >>> Cheers, Gene Heskett.
> >>>
> >>>
> >>> ___
> >>> Emc-users mailing list
> >>> Emc-users@lists.sourceforge.net
> >>> https://lists.sourceforge.net/lists/listinfo/emc-users
> >>> .
> >>
> >> Cheers, Gene Heskett.
> >
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> > .
>
> Cheers, Gene Heskett.
> --
> "There are four boxes to be used in defense of liberty:
>   soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author, 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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[Emc-users] Suggested replacement for Servo Dynamics SDFCC1020-12 amp?

[Dave Matthews]

Asking here because I see a lot of people retrofitting old equipment.

My wife has a long arm quilting machine that was made by Proto quire a few
years ago.  They were an industrial equipment maker that is long gone.  The
basic operation of the machine is to watch x and y encoders and stitch the
fabric keeping a constant (ish) distance between the stitches.  I suspect
that they are just calculating a velocity off of the encoder movements.
This feeds the differential inputs of a Servo Dynamics SDFCC1020-12 servo
amp that drives a brushed dc motor from a 90 volt pdc power supply.

The servo amp was slowly dying with power on faults.  I revived that by
replacing the electrolytic caps but the thing is still not right and the
alignment procedure won;t get to the correct motor rpm without causing
drift as zero machine movement.  It slowly stitches.  If I tune that out I
won't go the right speed so the stitch spacing is wrong.  I am goi that
feeds into the H bridge on the output but am not holding out much faith.

Any suggestions for a brushed DC servo amp that will handle 90 volts and
works with differential input?  The specs on the current amp are 118vd
peak, 112vdc continuous, 20 amp peak, 10 amp continuous with a 16kHz pwm
frequency.  Not real critical on any of them other than being over 90 volts
continuus.  I doubt that they are anywhere near the 10 amp limit.

Any suggestions on what to put in as a direct replacement.  I am about at
the point of using an arduino to read the input on an a to d pin and pwm a
mosfet.  The arduino will go fast enough in fast pwm mode.

Dave

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Re: [Emc-users] 2.8 or 2.9?

[Dave Matthews]

I am happily running 2.8.0 with 4 homing switches to auto align the gantry
(Gatton CNC).  Works great.  At the moment I am cutting lexan candy molds
for the wife.

Dave

On Wed, Feb 2, 2022, 00:38 Andy Howell  wrote:

> Hello,
>
> I maintain a gantry style CNC  router for our high school robotics team.
> Tonight our hard disk died. I need to decide what version to install.
>  From reading the list, it looks like 2.9 is close to release. My
> preference would be to go with that. Any reason I should go with 2.8.2
> instead?
>
> The machine was running 2.5. Time for an upgrade either way.
>
> Thanks,
>
> Andy
>
>
>
>
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Re: [Emc-users] M62/M63 with a pwm output possible?

[Dave Matthews]

That got it.  With the info in the thread I found a posting on the
LightBurn forums from someone trying to make a laser work on his Probotix
machine.  He had the find/replace strings in the final post.

I was using the spindle pwm pin generated by Stepconf for laser power
control.  I checked my HAL file and found that the spindle was set up on
pwmgen.0 like his example.  First try didn't fire the laser so I guessed
that the pwmgen for the spindle wasn't active until the spindle was
started.  I put in a M3 S10 before the first laser power command in the
file (an off) and things started working.  I haven't decided if I am going
to edit the HAL to add another pwmgen just for the laser or if I can find a
simple way to always have the pwmgen.0 enabled. is

Now I just need to zero in on some parameters for the burn.  I was doing a
photo of our dog and cat.  Dog came out reasonable but the black cat was
very light.  I think I need to back down the velocity as it is moving over
the pure black area too fast to do anything.

Dave

On Fri, Aug 13, 2021 at 4:34 PM Todd Zuercher  wrote:

> You might need to use M67 to set the PWM value and M62 to turn it on/off.
>
> Todd Zuercher
> P. Graham Dunn Inc.
> 630 Henry Street
> Dalton, Ohio 44618
> Phone:  (330)828-2105ext. 2031
>
> -Original Message-
> From: Dave Matthews 
> Sent: Friday, August 13, 2021 4:16 PM
> To: Enhanced Machine Controller (EMC) 
> Subject: [Emc-users] M62/M63 with a pwm output possible?
>
> [EXTERNAL EMAIL] Be sure links are safe.
>
> I recently started playing with lightburn and want to do photos.  Using
> M3/M5 Sxxx for laser control works fine for following lines but not for
> photos.  I think that I want to use M62 along with an Sxxx for laser on and
> power setting.  The laser power is controlled by PWMing the on/off pin.
>
> Lightburn likes to use M106 and an S number for laser control.  I think it
> is coming from M106 being used for fan on a Marlin 3d printer board.
> Find/Replace M03 in place of the M106 sort of works but It does a laser
> on, move, laser off so there is a lot of overburn.
>
> Sample gcode from Lightburn:
> ; Image @ 2500 mm/min, 20% power
> M8
> M106 S0
> G0X1.8487 Y0.8204 F0
> ; Layer C01
> M106 S0
> G1X0.041 F98.425
> M106 S20
> G1X0.29
> M106 S0
> G1X0.041
> M106 S0
>
> From the docs it looks like M62 would do the job if I can also use the
> Sxxx to set the pwm.
>
> Questions
>
> - Is it possible to set up the digital pin associated with the M62 to be a
> PWM output?
> - Is there an example of how to do this?
>
> Dave
>
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Re: [Emc-users] M62/M63 with a pwm output possible?

[Dave Matthews]

I am just an old technician that started out fixing stuff off of Nike
Hercules sites.  I ended up going back to school to be a software type and
gave that up for retirement a few years ago..

I looked it up in the docs and I think that I can probably just use the pin
and pwmgen stuff that StepConf generated.  I will just need to dig around
for the number to use with the M67.

Dave

On Fri, Aug 13, 2021, 18:28 Ralph Stirling 
wrote:

> I'm also an EE.  Class D audio amplifiers are filtered PWM.  A motor
> inductance also filters pwm to an analog value.  Your laser modulation
> input likely low pass filters the pwm as well.
>
> -- Ralph
>
> On Aug 13, 2021 2:25 PM, Dave Matthews  wrote:
> CAUTION: This email originated from outside the Walla Walla University
> email system.
>
>
> I come from an electronics background and am used to looking at a scope so
> have always considered PWM as a digital control mode.  I'll take a look for
> examples of how to set up a pwm pin in HAL.  My initial setup was done with
> StepConf so I let it do all of the work to set up a spindle pwm pin.
>
> Thanks.
>
> Dave
>
> On Fri, Aug 13, 2021 at 5:21 PM Ralph Stirling <
> ralph.stirl...@wallawalla.edu> wrote:
>
> > PWM *is* analog (0 to 1.0).  In hal, you would connect motion.analog_out
> > (syntax likely wrong, going by memory) to a pwm value input.  That would
> > feed the M67 value to your pwm.
> >
> > -- Ralph
> >
> > On Aug 13, 2021 2:09 PM, Dave Matthews  wrote:
> > CAUTION: This email originated from outside the Walla Walla University
> > email system.
> >
> >
> > I saw a lot of references to using the M67 but couldn't see how it would
> > apply as it is for analog outputs.  I thought that would be for something
> > like the 0-10 volt spindle control.  I was looking at the M62 because I
> > thought a PWM output would be considered a digital pin.  Am I looking at
> it
> > wrong?  The laser is PWM between 0 and 5v.
> >
> > Dave
> >
> > On Fri, Aug 13, 2021 at 4:34 PM Todd Zuercher 
> > wrote:
> >
> > > You might need to use M67 to set the PWM value and M62 to turn it
> on/off.
> > >
> > > Todd Zuercher
> > > P. Graham Dunn Inc.
> > > 630 Henry Street
> > > Dalton, Ohio 44618
> > > Phone:  (330)828-2105ext. 2031
> > >
> > > -Original Message-
> > > From: Dave Matthews 
> > > Sent: Friday, August 13, 2021 4:16 PM
> > > To: Enhanced Machine Controller (EMC)  >
> > > Subject: [Emc-users] M62/M63 with a pwm output possible?
> > >
> > > [EXTERNAL EMAIL] Be sure links are safe.
> > >
> > > I recently started playing with lightburn and want to do photos.  Using
> > > M3/M5 Sxxx for laser control works fine for following lines but not for
> > > photos.  I think that I want to use M62 along with an Sxxx for laser on
> > and
> > > power setting.  The laser power is controlled by PWMing the on/off pin.
> > >
> > > Lightburn likes to use M106 and an S number for laser control.  I think
> > it
> > > is coming from M106 being used for fan on a Marlin 3d printer board.
> > > Find/Replace M03 in place of the M106 sort of works but It does a laser
> > > on, move, laser off so there is a lot of overburn.
> > >
> > > Sample gcode from Lightburn:
> > > ; Image @ 2500 mm/min, 20% power
> > > M8
> > > M106 S0
> > > G0X1.8487 Y0.8204 F0
> > > ; Layer C01
> > > M106 S0
> > > G1X0.041 F98.425
> > > M106 S20
> > > G1X0.29
> > > M106 S0
> > > G1X0.041
> > > M106 S0
> > >
> > > From the docs it looks like M62 would do the job if I can also use the
> > > Sxxx to set the pwm.
> > >
> > > Questions
> > >
> > > - Is it possible to set up the digital pin associated with the M62 to
> be
> > a
> > > PWM output?
> > > - Is there an example of how to do this?
> > >
> > > Dave
> > >
> > > ___
> > > Emc-users mailing list
> > > Emc-users@lists.sourceforge.net
> > >
> >
> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-usersdata=04%7C01%7Cralph.stirling%40wallawalla.edu%7Cc049983552324009948d08d95ea0e3c7%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C637644867391671331%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000sdata=BlMQs4lcF0qlyREAutYk9V18ssqfk0ecl

Re: [Emc-users] M62/M63 with a pwm output possible?

[Dave Matthews]

I come from an electronics background and am used to looking at a scope so
have always considered PWM as a digital control mode.  I'll take a look for
examples of how to set up a pwm pin in HAL.  My initial setup was done with
StepConf so I let it do all of the work to set up a spindle pwm pin.

Thanks.

Dave

On Fri, Aug 13, 2021 at 5:21 PM Ralph Stirling <
ralph.stirl...@wallawalla.edu> wrote:

> PWM *is* analog (0 to 1.0).  In hal, you would connect motion.analog_out
> (syntax likely wrong, going by memory) to a pwm value input.  That would
> feed the M67 value to your pwm.
>
> -- Ralph
>
> On Aug 13, 2021 2:09 PM, Dave Matthews  wrote:
> CAUTION: This email originated from outside the Walla Walla University
> email system.
>
>
> I saw a lot of references to using the M67 but couldn't see how it would
> apply as it is for analog outputs.  I thought that would be for something
> like the 0-10 volt spindle control.  I was looking at the M62 because I
> thought a PWM output would be considered a digital pin.  Am I looking at it
> wrong?  The laser is PWM between 0 and 5v.
>
> Dave
>
> On Fri, Aug 13, 2021 at 4:34 PM Todd Zuercher 
> wrote:
>
> > You might need to use M67 to set the PWM value and M62 to turn it on/off.
> >
> > Todd Zuercher
> > P. Graham Dunn Inc.
> > 630 Henry Street
> > Dalton, Ohio 44618
> > Phone:  (330)828-2105ext. 2031
> >
> > -Original Message-
> > From: Dave Matthews 
> > Sent: Friday, August 13, 2021 4:16 PM
> > To: Enhanced Machine Controller (EMC) 
> > Subject: [Emc-users] M62/M63 with a pwm output possible?
> >
> > [EXTERNAL EMAIL] Be sure links are safe.
> >
> > I recently started playing with lightburn and want to do photos.  Using
> > M3/M5 Sxxx for laser control works fine for following lines but not for
> > photos.  I think that I want to use M62 along with an Sxxx for laser on
> and
> > power setting.  The laser power is controlled by PWMing the on/off pin.
> >
> > Lightburn likes to use M106 and an S number for laser control.  I think
> it
> > is coming from M106 being used for fan on a Marlin 3d printer board.
> > Find/Replace M03 in place of the M106 sort of works but It does a laser
> > on, move, laser off so there is a lot of overburn.
> >
> > Sample gcode from Lightburn:
> > ; Image @ 2500 mm/min, 20% power
> > M8
> > M106 S0
> > G0X1.8487 Y0.8204 F0
> > ; Layer C01
> > M106 S0
> > G1X0.041 F98.425
> > M106 S20
> > G1X0.29
> > M106 S0
> > G1X0.041
> > M106 S0
> >
> > From the docs it looks like M62 would do the job if I can also use the
> > Sxxx to set the pwm.
> >
> > Questions
> >
> > - Is it possible to set up the digital pin associated with the M62 to be
> a
> > PWM output?
> > - Is there an example of how to do this?
> >
> > Dave
> >
> > ___
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> > Emc-users@lists.sourceforge.net
> >
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> >
> >
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> >
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Re: [Emc-users] M62/M63 with a pwm output possible?

[Dave Matthews]

I saw a lot of references to using the M67 but couldn't see how it would
apply as it is for analog outputs.  I thought that would be for something
like the 0-10 volt spindle control.  I was looking at the M62 because I
thought a PWM output would be considered a digital pin.  Am I looking at it
wrong?  The laser is PWM between 0 and 5v.

Dave

On Fri, Aug 13, 2021 at 4:34 PM Todd Zuercher  wrote:

> You might need to use M67 to set the PWM value and M62 to turn it on/off.
>
> Todd Zuercher
> P. Graham Dunn Inc.
> 630 Henry Street
> Dalton, Ohio 44618
> Phone:  (330)828-2105ext. 2031
>
> -Original Message-
> From: Dave Matthews 
> Sent: Friday, August 13, 2021 4:16 PM
> To: Enhanced Machine Controller (EMC) 
> Subject: [Emc-users] M62/M63 with a pwm output possible?
>
> [EXTERNAL EMAIL] Be sure links are safe.
>
> I recently started playing with lightburn and want to do photos.  Using
> M3/M5 Sxxx for laser control works fine for following lines but not for
> photos.  I think that I want to use M62 along with an Sxxx for laser on and
> power setting.  The laser power is controlled by PWMing the on/off pin.
>
> Lightburn likes to use M106 and an S number for laser control.  I think it
> is coming from M106 being used for fan on a Marlin 3d printer board.
> Find/Replace M03 in place of the M106 sort of works but It does a laser
> on, move, laser off so there is a lot of overburn.
>
> Sample gcode from Lightburn:
> ; Image @ 2500 mm/min, 20% power
> M8
> M106 S0
> G0X1.8487 Y0.8204 F0
> ; Layer C01
> M106 S0
> G1X0.041 F98.425
> M106 S20
> G1X0.29
> M106 S0
> G1X0.041
> M106 S0
>
> From the docs it looks like M62 would do the job if I can also use the
> Sxxx to set the pwm.
>
> Questions
>
> - Is it possible to set up the digital pin associated with the M62 to be a
> PWM output?
> - Is there an example of how to do this?
>
> Dave
>
> ___
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>
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[Emc-users] M62/M63 with a pwm output possible?

[Dave Matthews]

I recently started playing with lightburn and want to do photos.  Using
M3/M5 Sxxx for laser control works fine for following lines but not for
photos.  I think that I want to use M62 along with an Sxxx for laser on and
power setting.  The laser power is controlled by PWMing the on/off pin.

Lightburn likes to use M106 and an S number for laser control.  I think it
is coming from M106 being used for fan on a Marlin 3d printer board.
Find/Replace M03 in place of the M106 sort of works but It does a laser on,
move, laser off so there is a lot of overburn.

Sample gcode from Lightburn:
; Image @ 2500 mm/min, 20% power
M8
M106 S0
G0X1.8487 Y0.8204 F0
; Layer C01
M106 S0
G1X0.041 F98.425
M106 S20
G1X0.29
M106 S0
G1X0.041
M106 S0

>From the docs it looks like M62 would do the job if I can also use the Sxxx
to set the pwm.

Questions

- Is it possible to set up the digital pin associated with the M62 to be a
PWM output?
- Is there an example of how to do this?

Dave

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Re: [Emc-users] Code of Conduct

[Dave Matthews]

On Tue, Jun 29, 2021 at 5:31 PM Les Newell 
wrote:

> On 29/06/2021 22:06, R C wrote:
> >
> -- snipped
>
> The sad thing is that in 6 months everyone will have forgotten about
> this and the list will continue just as it was, with or without a CoC.
>
> Les
>
>
>
> If that is the expected case then there is absolutely no need for a CoC is
there?

Dave

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Re: [Emc-users] openscad to normal gcode converter?

[Dave Matthews]

You need more than STEP, dxf and stl?  Those are all still in the free
version.

Dave

On Mon, Mar 22, 2021 at 2:02 PM Eric Keller  wrote:

> The free version of Fusion360 now has very limited file import and export
> capabilities.  They are trying to make it unusable without making it
> unusable.
> Eric Keller
> Boalsburg, Pennsylvania
>
> On Sun, Mar 21, 2021 at 5:20 PM andy pugh  wrote:
>
> > On Sun, 21 Mar 2021 at 21:15, Gene Heskett  wrote:
> >
> > > But fusion is no longer free.
> >
> > It's still fairly free if you don't need 5-axis toolpaths etc.
> >
> > https://www.autodesk.com/products/fusion-360/personal
> >
> > --
> > 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
> >
>
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Re: [Emc-users] openscad to normal gcode converter?

[Dave Matthews]

Since when?  It was a few days ago.  You do need to renew the free license
every year.  You log on and click download to do that.  You don't even need
to let the install complete.

Dave

On Sun, Mar 21, 2021, 17:15 Gene Heskett  wrote:

> On Sunday 21 March 2021 16:18:26 Dave Matthews wrote:
>
> > Fusion 360 will convert a stl into gcode.  It will take a bit of
> > compute power to do it for a large number of facets stl file.
> >
> > Dave
>
> But fusion is no longer free.
>
> 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 <http://geneslinuxbox.net:6309/gene>
>
>
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Re: [Emc-users] openscad to normal gcode converter?

[Dave Matthews]

Fusion 360 will convert a stl into gcode.  It will take a bit of compute
power to do it for a large number of facets stl file.

Dave

On Sun, Mar 21, 2021 at 1:14 PM Gene Heskett  wrote:

> Greetings all;
>
> What do we have that can convert a .stl file into gcode for a mill or a
> lathe?
>
> I think I have the 4 internal pieces ready to install in some sort of a
> housing, so I ordered a couple hacksaw blades for my bandsaw and bought
> some 2" thick alu bar for the output side of this thing.
>
> I have some 1" that will make the input half of the housing, make it up
> square so I'll have room for corner bolts to mount it with. But with the
> need for 2 bearings on the output, seperated by enough space to be
> rigid, I'll do it from 2" stock. But I think I'd like to make 2, one
> small enough to drive with a nema 17. But I'll need to make a metal
> armature for that because these 85 oz 17's I have run pretty hot. Too
> hot for plastic bearing carriers. So far I haven't stumbled over a 3
> phase nema 17, yet. But I keep looking.
>
> Now that I have at least a Mr so and so familiarity with openscad, no
> means an expert, I think I'd like to see about drawing the housing parts
> up in openscad, and possibly generating some gcode from its .stl output.
>
> Can pycam do that?
>
> 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] lathe paths with linux cnc and CAD software

[Dave Matthews]

On Wed, Feb 3, 2021 at 3:13 PM R C  wrote:

> well,
>
>
> I don't expect companies to give me stuff for free of course, they
> produce software for a market, to make money, I am just not in that
> market. I read that a license, per year, if not mistaken, is $495, and
> you can use it for free for a year (1st year ?). That is of course a
> good deal, for a machine shop.
>
>
> The one year license is renewable.  To renew you just download the
installer again.  I don't think I even let the download complete last time
I did it.

Dave

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Re: [Emc-users] lathe paths with linux cnc and CAD software

[Dave Matthews]

I usually find it by googling Fusion 360 for personal use or Fusion 360
hobbyist.  Gets you to https://www.autodesk.com/products/fusion-360/personal

Dave

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Re: [Emc-users] lathe paths with linux cnc and CAD software

[Dave Matthews]

On Tue, Feb 2, 2021 at 2:44 PM R C  wrote:

> Hi Chris,
>
> well, I am only looking into something different for making some parts
> on a lathe,  I looked at fusion360, but what I hear is that you can't
> 'export' projects, or import, and also you can only have a few.  Not
> that I do a lot of work, but it seems to be a hassle.
>
>
You heard wrong.  You can import/export in a few formats and the project
limit is for active projects.  Basically click to archive one and click
again to make an archived one active.  I think the limit is 10 active.

Dave

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Re: [Emc-users] EDM from scratch

[Dave Matthews]

Issues 1 - 163 might be available on some of the darker areas of the
internet if you can't find them legally.  A quick check at the Jolly Roger
one lists them.

Dave

On Sun, Jan 31, 2021 at 2:36 PM John Dammeyer 
wrote:

> Rats.  I'm missing #169 for some reason.
>
> The series I was thinking about was in issues #57..#60 and with addendums
> in #64 and #68.  The #68 issue discussed dielectrics safe for the home
> workshop and the liquid mentioned may still be available in the UK.
>
> John Dammeyer
>
>
> > -Original Message-
> > From: Gerrit Visser [mailto:gerr...@psgv.ca]
> > Sent: January-31-21 11:06 AM
> > To: 'Enhanced Machine Controller (EMC)'
> > Subject: Re: [Emc-users] EDM from scratch
> >
> > Issue 168, Oct 2010 is the first installment
> >
> > Gerrit
> >
> > -Original Message-
> > From: John Dammeyer [mailto:jo...@autoartisans.com]
> > Sent: January 31, 2021 1:31 PM
> > To: 'Enhanced Machine Controller (EMC)'  >
> > Subject: Re: [Emc-users] EDM from scratch
> >
> > Andy,
> > Check out this page:
> > http://mikesworkshop.weebly.com/a-spark-erosion-apparatus.html
> >
> > Also Model Engineer's workshop had a 4 part series on building one.
> I'll go through my archives and see if I can find them.  I'm pretty
> > sure I had all 4.  An online search doesn't pinpoint which issues.
> >
> > John Dammeyer
> >
> >
> >
> >
> >
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> > https://lists.sourceforge.net/lists/listinfo/emc-users
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>
>
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Re: [Emc-users] Setting up two home switches on Y

[Dave Matthews]

I just stuck it in a new thread on the forum.  I was surprised that
.odt files are not allowed but .doc files are.

Dave

On Tue, Sep 15, 2020 at 6:00 PM andy pugh  wrote:
>
> On Tue, 15 Sep 2020 at 20:29, Dave Matthews  wrote:
>
> > I now have a nice .odt file that describes how to do the setup edit by
> > edit and includes the before and after .ini and .hal files as an
> > example.  Anyplace in particular that I should store it.
>
> Well, the WIki might work, other than the format. (needs to be in wiki markup)
> The same issue applies to the idea of merging it in to the existing
> homing docs (needs to be in asciidoc format)
>
> Maybe post it to the forum?
>
> --
> 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] freecad, latest, starter tut?

[Dave Matthews]

On Sat, Sep 19, 2020 at 12:46 PM Chris Albertson
 wrote:
>

>
> I'm actually watching a Solidworks online class now.
>
>
>From the previous emails I am assuming the EAA version.  Does it
include the CAM modules?  Looking for a Fusion replacement that will
allow design and tool path generation all in one.

Dave


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Re: [Emc-users] CAD for parts to make on a lathe

[Dave Matthews]

On Fri, Sep 18, 2020 at 1:22 PM andy pugh  wrote:
>
> On Fri, 18 Sep 2020 at 17:04, Chris Albertson  
> wrote:
>
> > The EAA is a not for profit organization and can use your $60.  I am pretty
> > sure they don't care why you joined,
>
> And what if all these uncommitted new members are noted by SW such
> that the offer gets withdrawn?
>

They really don't care why you join or how committed you are.  The
more members they have the more clout they have in Washington when
lobbying.

Dave


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Re: [Emc-users] Setting up two home switches on Y

[Dave Matthews]

On Mon, Sep 14, 2020 at 7:50 PM andy pugh  wrote:

>
> I think that the problem is that you have y2-step in the Joint3
> section, but in the area where you are connecting the parallel port
> pins, both sets of step/dir outputs are netted to the ystep. So they
> move at exactly the same speed and at the same time.
>
>

Also, thank you for all of the help.

Dave


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Re: [Emc-users] Setting up two home switches on Y

[Dave Matthews]

On Mon, Sep 14, 2020 at 7:50 PM andy pugh  wrote:
>
> On Mon, 14 Sep 2020 at 21:52, Dave Matthews  wrote:
>
> > Looking closer at the DRO on the screen I can see that the second Y
> > axis is counting down looking for home but is not moving.
> >
> > I racked the gantry and tested to see if it would unrack.  What I
> > found is that the new switch is ignored.
>
> I am fully understanding how both these observations can be true at
> the same time.
>
> If the second Y does not move, how do you know the home switch is ignored?

The second Y was moving but because it was using the pulse train from
the original setup it was tracking with the other motor.  So if that
motor didn't see its switch first the second Y would crash the switch.
It was probably seeing its own switch but that was not controlling
what was going to the motor.


> I think that the problem is that you have y2-step in the Joint3
> section, but in the area where you are connecting the parallel port
> pins, both sets of step/dir outputs are netted to the ystep. So they
> move at exactly the same speed and at the same time.
>
That was the issue.  I thought I caught everything but missed those two pins.

I now have a nice .odt file that describes how to do the setup edit by
edit and includes the before and after .ini and .hal files as an
example.  Anyplace in particular that I should store it.

Dave


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Re: [Emc-users] Setting up two home switches on Y

[Dave Matthews]

On Mon, Sep 14, 2020 at 3:52 PM andy pugh  wrote:
>
> On Mon, 14 Sep 2020 at 20:19, Dave Matthews  wrote:
>
> > Almost there.  There isn't a gantry.hal file on github that I can find
> > to reference.
>
> https://github.com/LinuxCNC/linuxcnc/blob/master/lib/hallib/gantrysim.hal
> Maybe?
>
> >   When I start LinuxCNC I
> > get an exit because ypos-cmd, ypos-fb, ystep and yenable have already
> > been assigned
>
> Try cloning them as y2*-*
> (the sample HAL above uses joint0 to joint3, which might be clearer.
>
Adding the prefix got things moving.  When I start Axis comes up with
four numbered radio buttons for the joints.  I hit home all and it
does it's thing and the GUI changes to X Y Z radio buttons.  I cannot
job Y without homing the others jog without homing.  Good so far.

Looking closer at the DRO on the screen I can see that the second Y
axis is counting down looking for home but is not moving.

I racked the gantry and tested to see if it would unrack.  What I
found is that the new switch is ignored.  Using Hal Meter I can watch
it toggle.

I tried with kinstype=BOTH like the example and also with kinstype=b
like the docs call out.  No change.

It is like the machine knows it has four joints but is acting like it
should still home on only one of the Y joints.  I do have homing set
to -2, sequence is Z X Y.

.ini and .hal files are attached.

Dave


4HomingSwitchesWithLaser.ini
Description: application/wine-extension-ini


4HomingSwitchesWithLaser.hal
Description: Binary data
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Re: [Emc-users] Setting up two home switches on Y

[Dave Matthews]

On Mon, Sep 14, 2020 at 3:52 PM Gene Heskett  wrote:
>
> On Monday 14 September 2020 15:16:04 Dave Matthews wrote:
>
> > On Fri, Sep 11, 2020 at 5:16 PM andy pugh  wrote:
>
> One of the rules for the net command is that only the first of that name
> in your hal file, is allowed to be an input.  Re-use of a given name is
> assumed to be a link to send that signal to another target, like your
> joint 3 stuff.  A way to send a given signal to many places.  Your
> net ystep lines arrows are backwards IOW.  And its confusing because at
> one point, those <= and => were ignored. only there to help us humans
> understand.  But with two-pass enabled, I'm not so sure, so someone
> should clarify that.
>

The arrows are exactly as Stepgen created them.

Dave


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Re: [Emc-users] Setting up two home switches on Y

[Dave Matthews]

On Fri, Sep 11, 2020 at 5:16 PM andy pugh  wrote:
>
> On Fri, 11 Sep 2020 at 21:18, Dave Matthews  wrote:
>
> > The examples that I have found are for Mesa cards and seem to have a
> > lot of stuff in them that I don't have in my .ini and .hal files.
>
> Have you looked at the supplied sim-axis-gantry config?
>
> > Any hints on where I can find the docs on editing the ini and hal
> > files to add the second Y home switch and having 4 joint homing?
>
> The important parts are the [KINS] section and the homing sequence
> numbers for the joints here:
> https://github.com/LinuxCNC/linuxcnc/blob/master/configs/sim/axis/gantry/gantry.ini
>
> Then you just need to connect the two joint.N.home-sw-in pins to the
> relevant parport pins in the HAL file.
>
> (I wouldn't suggest looking at the simulated-gantry-home HAL file,
> that is almost entirely related to _simulating_ home switches.)

Almost there.  There isn't a gantry.hal file on github that I can find
to reference.  I set up the Kinematics and added the new switch being
careful to not have a name conflict.  I copy/pasted the joint for the
current Y axis (JOINT_1) creating JOINT_3.  I then replaced the 1 in
that section with 3 to create the new joint.  When I start LinuxCNC I
get an exit because ypos-cmd, ypos-fb, ystep and yenable have already
been assigned during the JOINT_1 setup.  With those lines commented
out I can get a startup and 4 joints showing on the screen.

The relevant hal section, a copy of JOINT_1 is:
setp stepgen.3.position-scale [JOINT_3]SCALE
setp stepgen.3.steplen 1
setp stepgen.3.stepspace 0
setp stepgen.3.dirhold 65000
setp stepgen.3.dirsetup 65000
setp stepgen.3.maxaccel [JOINT_3]STEPGEN_MAXACCEL
net ypos-cmd joint.3.motor-pos-cmd => stepgen.3.position-cmd
net ypos-fb stepgen.3.position-fb => joint.3.motor-pos-fb
net ystep <= stepgen.3.step
net ydir <= stepgen.3.dir
net yenable joint.3.amp-enable-out => stepgen.3.enable
net home-y-right => joint.3.home-sw-in

I am not finding the place in the docs telling me what to do with
these lines.  Delete them?   Rename the variables?  I didn't do this
as I couldn't find other references which leads me to think they may
be fixed names used by the code.

Dave


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Re: [Emc-users] Mini-PC

[Dave Matthews]

On Sun, Sep 13, 2020 at 12:44 PM Gene Heskett  wrote:
>
> On Sunday 13 September 2020 05:18:16 Chris Albertson wrote:
>
> > You could prevent this by not using "password" or "123" as your
> > network password.
> >
> Aww, come on guy, even I know better than that, I can change the wpsk2 pw
> to any random 26+ char phrase, and his phone can hack it in 30 seconds
> or less.  I've played whack a mole with him several times, but I always
> wind up just turning the radio off.  Using dd-wrt, and all hardwired, no
> one I didn't give the credentials to has gotten in, in nearly 16 years
> now.  There are 2 ways I can route the wifi, to me, or to the network,
> so I don't enable the "to me". I have it set, when its on, to allow
> network access over a wifi path, but not to me.
>
> > I don't enable the wifi. I have a neighbor that will use 100gb a month
> >
> > > using my bandwidth instead of his with his smartphone.  So all my
> > > networking is hard wired.
>

Block his mac addresses?

Dave


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Re: [Emc-users] Setting up two home switches on Y

[Dave Matthews]

On Fri, Sep 11, 2020 at 5:16 PM andy pugh  wrote:
>
> On Fri, 11 Sep 2020 at 21:18, Dave Matthews  wrote:
>
> > The examples that I have found are for Mesa cards and seem to have a
> > lot of stuff in them that I don't have in my .ini and .hal files.
>
> Have you looked at the supplied sim-axis-gantry config?
>

I am pretty sure I looked at it but didn't see the homing switches for
both sides.

> > Any hints on where I can find the docs on editing the ini and hal
> > files to add the second Y home switch and having 4 joint homing?
>
> The important parts are the [KINS] section and the homing sequence
> numbers for the joints here:
> https://github.com/LinuxCNC/linuxcnc/blob/master/configs/sim/axis/gantry/gantry.ini

That is what I have been looking for for months.  Thank you.  The
magic section is at the top:
  [KINS]
 JOINTS = 4
 KINEMATICS = trivkins coordinates=XYZY kinstype=BOTH
 # Notes:
 # KINEMATICS coordinates=value MUST agree with [TRAJ]COORDINATES
 #


>
>
-
>
> There is a bit more detail here:
> http://linuxcnc.org/docs/2.8/html/config/ini-homing.html#_home_sequence
>
I read through that but didn't absorb the config changes from it.

> But, basically, wire up the home switches and make some very small
> tweaks to the INI. There isn't much to find as there isn't much to do.
>
> And I _think_ that Stepconf knows how to do it, so you could make a
> config from scratch that matches your machine for reference.

I couldn't find a way to make Stepconf do it.  I tried both motors on
Y and it did what I currently have.  It wouldn't allow two switches to
be defined on the Y axis.

>From that example I should be able to set it up.  I may put together
the simple how to steps writeup on exactly what to edit and why.
Without that github file it is clear as mud.

Dave


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[Emc-users] Setting up two home switches on Y

[Dave Matthews]

I have a Gatton CNC for wood cutting that uses two Y axis steppers on
the gantry.  I currently have XYZ home switches and everything is
happy.  This is a parallel port setup.  Currently I have two motors
set as Y in Stepconf.

I want to add another Y axis home switch to set up auto unracking of the gantry.

The examples that I have found are for Mesa cards and seem to have a
lot of stuff in them that I don't have in my .ini and .hal files.  I
was hoping that setup for two motors on one axis would make it into
the final 2.8 release or that there would be an obvious example setup.

Any hints on where I can find the docs on editing the ini and hal
files to add the second Y home switch and having 4 joint homing?  I
have a hard time finding anything in the docs.

Dave


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

[Dave Matthews]

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

Dave

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

> I was just playing with it a bit,
>
>
> I have the idea, that , like homing is done per axis, "touching Off" is
> done per axis too?
>
>
>
> thanks,
>
>
> Ron
>
>
>
>
>
> On 9/10/20 4:50 PM, jrmitchellj wrote:
> > On a Mill setup, touch-off only affects the Z axis.  You will need to
> find
> > your X0, and Y0 positions.  I use the end key to bring up the dialog and
> > set the offset.
> >
> > --J. Ray Mitchell Jr.
> > jrmitche...@gmail.com
> >
> >
> >
> > "Good enough is the enemy of excellence"author unknown
> >
> >
> > On Thu, Sep 10, 2020 at 2:51 PM R C  wrote:
> >
> >> Hello,
> >>
> >>
> >> this is probably a rookie question, but sometime when I do a "Touch
> >> Off",  the Z-position indeed becomes 0,  but the X and Y are not.   Then
> >> in teh axis program, it will still go to the "first" spot where it needs
> >> to start milling, and in the  drawing it fllows the correct
> >> lines/pattern,  but since the tuch off wasn't in the origin (0, 0, 0) on
> >> the actual workpiece/part the machining is off (and consequently goes
> >> out of the material, and starts milling air at some point.
> >>
> >>
> >> I am wondering why that happens?   Is that a mistake I sometimes make in
> >> Freecad, or is that something I do wrong touching off? (I am fairly sure
> >> it is not a bug).
> >>
> >>
> >> How can I make sure that I am actually touching off at (0, 0, 0) ?
> >>
> >>
> >> thanks,
> >>
> >>
> >> Ron
> >>
> >> (sorry if I have some terminology incorrect, but you know ... rookie
> here.)
> >>
> >>
> >>
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> >>
> > ___
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>
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Re: [Emc-users] LinuxCNC 2.8.0 is released

[Dave Matthews]

Thank you for all the work that went into this.  I am a retired
programmer and project manager.  That many people working on that much
code is a huge achievement.

Dave

On Tue, Sep 8, 2020 at 7:31 PM andy pugh  wrote:
>
> I am pleased (and a little relieved) to announce the release of LinuxCNC 
> v2.8.0
>
> This release has been a long time in development. The main new
> feature, the separation of joints (actuators) and (cartesian) axes has
> been in development since around 2010.
>
> This is one of the biggest updates to LinuxCNC ever. The changelog can
> be viewed here:
> https://github.com/LinuxCNC/linuxcnc/blob/2.8/debian/changelog
>
> Highlights include:
>
> * Joints-axes separation - mainly obvious as much better support for
> gantries and their homing but also for robots and any other
> non-cartesian system
> * Reverse-run - negative feed-overide will now reverse along the
> previous path - introduced for wire spark eroders, but I am sure you
> will find other uses.
> * Multiple spindle support - up to 9 spindles
> * Tool table expanded to 1000 tools
> * Packages available for Raspberry Pi 4.
> * External offsets and Extra (not controlled by G-code) joints. -
> G-code is not the only way to move things.
> * QTvcp: New QT-based VCP framework
> * QTdragon, QTlathe, QTtouchy, QTscreen - new GUIs based on QTVP
> * Silverdragon: New gscreen based GUI
> * plasmac: New full-featured Plasma cutter controller - with
> integrated THC and a whole lot more.
> * Massively expanded and improved Spanish translations of
> documentation and manpages
> * New Chinese translation of the "入门" (Getting Started) documentation.
>
> Installable packages are available for Ubuntu Precise and Debians
> Wheezy, Stretch, Jessie and Buster (including Raspbian). Support for
> Ubuntu Lucid has ended.
> At the moment most supported platforms only work with the preempt-rt kernels.
> There is an experimental 64-bit RTAI kernel for those needing it. We
> hope to mainline this soon, but help would be appreciated.
>
> More details of how to update here:
> http://linuxcnc.org/docs/2.8/html/getting-started/updating-linuxcnc.html
>
> For new installations, or to test-run the new version and OS on your
> existing hardware without committing to an OS upgrade use the ISO
> images and process described here:
> http://linuxcnc.org/docs/2.8/html/getting-started/getting-linuxcnc.html
>
>
> Many thanks to the following contributors, and to anyone else who has
> submitted work or code to the project.
> Alec Ari
> Alexander Brock
> Alex Joni
> Alex Wigen
> Al Smart
> Andrea Ricchi
> Andrew Kyrychenko
> andypugh
> Anthony Barney
> Anton Midyukov
> ascurtis
> Balestrino
> bebro
> Bence Kovacs
> Benjamin Brockhaus
> Benjamin Weis
> Bernhard M. Wiedemann
> Bertho Stultiens
> blazini36
> Boris Skegin
> Brian Hicks
> cascade256
> Chris Edwards
> Chris Morley
> Chris Radek
> Colten Edwards
> Curtis Dutton
> Daniel Rogge
> david
> David Shore
> Dewey Garrett
> Eduard Kachur
> Edward Tomasz Napierala
> Ernesto Lo Valvo
> Florian Kerle
> Gergely Nagymate
> Hannah Lau
> Håvard Flaget Aasen
> itai
> itaib
> James Waples
> Jan Mrázek
> jasen
> Jeff Epler
> Jim Craig
> Jin
> j.m. garcia
> Joe Hildreth
> John
> John Kasunich
> John Morris
> John Thornton
> Jon Elson
> Kim Kirwan
> Kurt Jacobson
> Lars Bensmann
> Les Newell
> loopsun
> Lorenz Neureuter
> Lubomir Rintel
> Luke Peterson
> Mark Andrew Gerads
> Markus
> Mateusz Konieczny
> Matsche
> Michael Geszkiewicz
> Michael Haberler
> Mick
> Moses McKnight
> MrFouFou
> Nicola Quargentan
> Norbert Schechner
> Oleg Pryadko
> peter wallace
> Phillip A Carter
> Phillip Carter
> pippin88
> Rene Hopf
> Rick M
> Robert W. Ellenberg
> rolf
> Rudy du Preez
> Ruoxi Wang
> Rushabh Loladia
> sam sokolik
> Sam Sokolik
> Sebastian Kuzminsky
> Sergey Alirzaev
> Solitarily
> sphasse
> Stephen Wille Padnos
> Sync
> Tero Kaarlela
> Thomas Burkhard
> Tom Schneider
> Trần Ngọc Quân
> tseufl
> TurBoss
> Will Glynn
>
>
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1912
>
>
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Re: [Emc-users] Mini-PC

[Dave Matthews]

On Tue, Sep 8, 2020 at 12:44 PM John Dammeyer  wrote:
>
> > From: Gene Heskett [mailto:ghesk...@shentel.net]
> > On Tuesday 08 September 2020 04:56:04 andy pugh wrote:
--
> > --
>
> Actually Gene it's $178.90 Cdn and I can have one tomorrow via no cost Prime 
> Shipping.
>
> Beelink BT3 Pro II Mini PC 4GB Ram 64GB eMMC Windows 10 Desktop Computer 
> Intel Atom X5-Z8350 HDMI+VGA Display,
>
> Looking forward to a report from Andy on how well it works.
>
> John
>

A few weeks ago someone mentioned the HP 8300 SFF as having very good
jitter numbers.  Those are an i5 that takes a $5 cable to add the
parallel port.  Usually about $150 US on Amazon.

$155 today - 
https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1BO/ref=sr_1_1?dchild=1=hp+8300+sff=1599583671=8-1

Dave


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Re: [Emc-users] Mini-PC

[Dave Matthews]

On Tue, Sep 8, 2020 at 5:03 AM andy pugh  wrote:
>

>
> 1) The Wifi chip needs proprietary drivers. The installer does not
> appear to know how to get these.
> 2) Installation of Grub2 failed the first time. Google suggested that
> it would succeed if the machine had a network connection, and by
> plugging in an ethernet connection the process went smoothly.
>


I hit #1 when I did my last install.  I couldn't get the GUI based
installer to bypass the network stuff and ended up using the text
based installer.  Is there any way to get the GUI based installer to
bypass network stuff?  It seems like it wasn't totally obvious how to
get the install to work on the text based installer.

Dave


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Re: [Emc-users] Error Message

[Dave Matthews]

I don't use the tool table, everything runs as tool 1.  This is just a
simple wood cutting router.  I don't know what a remap is.

I modified the design and ran it again.  It is a sample of a small
round box to try out the Vectric threading tool path.  Today the
modified ran with no messages at all.

Magic gremilins?

Dave

On Tue, Aug 4, 2020 at 1:09 PM andy pugh  wrote:
>
> On Tue, 4 Aug 2020 at 17:21, Dave Matthews  wrote:
> >
> > Let's see if it will take the attachment.  What would I be looking for
> > in the gcode?
>
> /0
> TAN[90]
>
> But it looks like plain G-code.
>
> Do you have any remaps?
> Is your tool table looking sensible? (Maybe a tool probe routine
> polluted that with a NaN?)
> The G-code appears to be running fine in a sim here.
>
> --
> 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] Error Message

[Dave Matthews]

Let's see if it will take the attachment.  What would I be looking for
in the gcode?

Dave

On Tue, Aug 4, 2020 at 12:12 PM andy pugh  wrote:
>
> On Tue, 4 Aug 2020 at 16:36, Dave Matthews  wrote:
>
> > Tried to set invalid pose in tpAddCurrentPos on id 1347!disp is nan, nan, 
> > nan
>
> Typically indicative of a divide-by-zero.
>
> What does the G-code look like?
>
> --
> 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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Bottom Clearance Pocket_1-4-Bottom Clearance Pocket.ngc
Description: Binary data
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[Emc-users] Error Message

[Dave Matthews]

Running LinuxCNC 2.8 on a parallel port setup.  Not sure what the
minor number is, installed a few months ago.

Gcode was from Vectric Vcarve 10.5 using the LinuxCNC post processor.

I tried the Vectric LinuxCNC post processor yesterday to see if it was
smoother than their EMC G61 post processor.  During the run I got a
pop up error message that repeated with just the ID number changing.

Message:
Tried to set invalid pose in tpAddCurrentPos on id 1347!disp is nan, nan, nan

The message appeared twice for each instance and repeated with
different (increasing) numbers.

Any pointers as to where to start looking or is this something to just ignore?

Dave


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Re: [Emc-users] Machmaker USB -> Parallel

[Dave Matthews]

On Thu, Jul 23, 2020 at 3:55 PM Peter C. Wallace  wrote:
snip

>
> Looks like it would be fine for a router type applications but not 
> mills/lathes
> that need real time feedback for threading, rigid tapping etc. It might
> allow LinuxCNC use without a real time kernel though.
>

My exact application.  Cutting wood with a router that could probably
move 300 ipm if I cranked it up.  Current settings are max 180 ipm and
2ips/s/s accel.  I would like to use your products but they are really
getting into overkill fully loaded cost/complexity to set up for this
thing.  Right now it is all running with a $20 BOB and an old HP
desktop with a PCI parallel port card that is older than the PC.

Dave


> Peter Wallace
> Mesa Electronics
>


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Re: [Emc-users] Machmaker USB -> Parallel

[Dave Matthews]

On Thu, Jul 23, 2020 at 3:25 PM John Dammeyer  wrote:
>
>
>
> > > Is the 7i92 less expensive?  Do we even know the price of this USB->DB25
> > > device?
> > >
> >
> > $65 + $25 shipping to the US.  Given the shipping cost of the 7i92
> > plus the cost of the cable needed it is less expensive.
>
> Not true I think.  2x $65 plus perhaps still $25 shipping to the US since the 
> 7i92H has two ports.   At that price point there are other MESA/PICO 
> solutions that also have a break out board so now you have to factor that 
> into the price too.
>
> And it's still USB.  Can it handle a 2500 line quadrature encoder?   The 
> control is the small part of the overall CNC conversion.  I found that buying 
> the CNC Cape for the BeagleBone  which all around seemed like the lowest 
> entry cost ultimately wasn't cheaper and it's sitting in a box.
>
> John
>
>

For my purposes I don't need two ports or the ability to read an
encoder.  One port is enough.  I am driving four steppers and reading
a few home switches.  This guy is claiming 150 kHz so way faster than
I need for 3200 microsteps per inch at 3 ips.

Dave


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Re: [Emc-users] Machmaker USB -> Parallel

[Dave Matthews]

On Thu, Jul 23, 2020 at 2:18 PM Chris Albertson
 wrote:
>
> Is the 7i92 less expensive?  Do we even know the price of this USB->DB25
> device?
>

$65 + $25 shipping to the US.  Given the shipping cost of the 7i92
plus the cost of the cable needed it is less expensive.

> Just perhaps this is what the guys in Poland did then they are selling a $2
> chip burried in a $10 cable for $100 each?  It could work.
>
Most likely what they have done.  I suspect that a Mach 3 UC-100 is
done that way too.

Dave


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Re: [Emc-users] Machmaker USB -> Parallel

[Dave Matthews]

That is what the video is.  It is being used as an interface from a
Raspberry Pi 4 running LinuxCNC.  From the info on the website it is
LinuxCNC only.

Dave

On Thu, Jul 23, 2020 at 2:17 PM John  wrote:
>
> Does it even work with LinuxCNC?
>
> Sent from John's iPhone 4S
>
> On 2020-07-23, at 11:07 AM, Dave Matthews  wrote:
>
> > The biggest plus I see is that if it is easy to set up it might be a
> > good way to go, especially at $90 delivered.  I am not a big fan of
> > USB but it does seem to work fine for the Mach 3 crowd.  The biggest
> > negative I see for the Mesa products is that they are very difficult
> > to get set up for most people.  The LinuxCNC docs are set up for
> > people that have been using it for 20 years or those that want to
> > spend hours digging.  Even finding docs for setting up auto gantry
> > alignment on my parallel port router has been difficult.  I have found
> > a couple examples for Mesa setups but knowing what to edit on my setup
> > is not clear.  Stopconf works great but after that it gets real murky
> > real fast.
> >
> > Dave
> >
> > On Thu, Jul 23, 2020 at 12:52 PM John Dammeyer  
> > wrote:
> >>
> >> This might have been mentioned on the MACH CNC group but the reality is 
> >> that if you want LinuxCNC and two parallel ports the MESA 7i92 is less 
> >> expensive and not tied to potential speed issues via USB.   For example 
> >> WIN-10 won't run the USB based Smooth Stepper  but will run the Ethernet 
> >> Smooth Stepper with MACH4.
> >>
> >> So for LinuxCNC at $89 the 7i92H is just overall a better deal.  Or any of 
> >> the MESA or PICO based products.  For all the costs involved in CNC the 
> >> truth is during the learning curve part the broken tool bits and trashed 
> >> work is far more expensive but considered part of the costs.  Ethernet is 
> >> faster and less likely to have timing issues.
> >>
> >> My 2 cents.
> >>
> >> John
> >>
> >>> -Original Message-
> >>> From: Dave Matthews [mailto:n36...@gmail.com]
> >>> Sent: July-23-20 8:42 AM
> >>> To: Enhanced Machine Controller (EMC)
> >>> Subject: [Emc-users] Machmaker USB -> Parallel
> >>>
> >>> A link to a video for this thing showed up in my facecrap feed.  It
> >>> looks like a UC-100 only for LinuxCNC 2.9.  They are demoing on a Pi
> >>> 4.  Has anyone got any experience with the Linumeric-LPT v1?  Price
> >>> and ordering are not shown on the site, you are directed to email
> >>> them.
> >>>
> >>> Product Link - http://machmaker.pl/index.php?p=1_13
> >>>
> >>> VIdeo -
> >>> https://www.youtube.com/watch?v=txivr8j86t8=youtu.be=IwAR04UYfSGbRucny1aek0HVgJGrBkG0FiaxosNx_DQ
>
>
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Re: [Emc-users] Machmaker USB -> Parallel

[Dave Matthews]

The biggest plus I see is that if it is easy to set up it might be a
good way to go, especially at $90 delivered.  I am not a big fan of
USB but it does seem to work fine for the Mach 3 crowd.  The biggest
negative I see for the Mesa products is that they are very difficult
to get set up for most people.  The LinuxCNC docs are set up for
people that have been using it for 20 years or those that want to
spend hours digging.  Even finding docs for setting up auto gantry
alignment on my parallel port router has been difficult.  I have found
a couple examples for Mesa setups but knowing what to edit on my setup
is not clear.  Stopconf works great but after that it gets real murky
real fast.

Dave

On Thu, Jul 23, 2020 at 12:52 PM John Dammeyer  wrote:
>
> This might have been mentioned on the MACH CNC group but the reality is that 
> if you want LinuxCNC and two parallel ports the MESA 7i92 is less expensive 
> and not tied to potential speed issues via USB.   For example WIN-10 won't 
> run the USB based Smooth Stepper  but will run the Ethernet Smooth Stepper 
> with MACH4.
>
> So for LinuxCNC at $89 the 7i92H is just overall a better deal.  Or any of 
> the MESA or PICO based products.  For all the costs involved in CNC the truth 
> is during the learning curve part the broken tool bits and trashed work is 
> far more expensive but considered part of the costs.  Ethernet is faster and 
> less likely to have timing issues.
>
> My 2 cents.
>
> John
>
> > -Original Message-
> > From: Dave Matthews [mailto:n36...@gmail.com]
> > Sent: July-23-20 8:42 AM
> > To: Enhanced Machine Controller (EMC)
> > Subject: [Emc-users] Machmaker USB -> Parallel
> >
> > A link to a video for this thing showed up in my facecrap feed.  It
> > looks like a UC-100 only for LinuxCNC 2.9.  They are demoing on a Pi
> > 4.  Has anyone got any experience with the Linumeric-LPT v1?  Price
> > and ordering are not shown on the site, you are directed to email
> > them.
> >
> > Product Link - http://machmaker.pl/index.php?p=1_13
> >
> > VIdeo -
> > https://www.youtube.com/watch?v=txivr8j86t8=youtu.be=IwAR04UYfSGbRucny1aek0HVgJGrBkG0FiaxosNx_DQ
> > iKoZXNBPOXl1Raue3A
> >
> > Dave
> >
> >
> > ___
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> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
>
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[Emc-users] Machmaker USB -> Parallel

[Dave Matthews]

A link to a video for this thing showed up in my facecrap feed.  It
looks like a UC-100 only for LinuxCNC 2.9.  They are demoing on a Pi
4.  Has anyone got any experience with the Linumeric-LPT v1?  Price
and ordering are not shown on the site, you are directed to email
them.

Product Link - http://machmaker.pl/index.php?p=1_13

VIdeo - 
https://www.youtube.com/watch?v=txivr8j86t8=youtu.be=IwAR04UYfSGbRucny1aek0HVgJGrBkG0FiaxosNx_DQiKoZXNBPOXl1Raue3A

Dave


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Re: [Emc-users] off topic: pwm with a stepper driver/motor

[Dave Matthews]

It may just be my age but wouldn't it be easier to just use a 555 (do they
still make them) and a knob to tweak the pulse rate to match the star?  Add
a slew button to change the speed while the button is pushed and a
direction switch to toggle the direction pin on the driver.  I guess I
don't see the need for a computer to run a stepper at a constant speed.

Dave

On Mon, Jul 13, 2020, 22:46 R C  wrote:

> well,  I can calculate what the speed needs to be, also I can actually
> "observe" it too..  by pointing the  telescope at a star and see how
> much the deviation is.  I have encoder to check the actual speed of a
> shaft.
>
> I found some information in a manual/tech-sheet that comes with the
> drivers, so I am trying to figure out what the best stepping rate is and
> what the best way of actually sending pulses to the stepper-driver is.
>
> I wrote some c-code that runs the motors in pthreads, I just want to
> know what the best way is.  pulse lengths, pause/gap length etc.
> (basically the best way to use a dm542  (all those steppers are sorta
> the same I understand)
>
> The driver tech-sheet  basically says it can do pretty all it's
> available micro stepping with a 1.8 degree stepper motor, I wonder if
> that is really true.
>
>
> Ron
>
>
> On 7/13/20 8:35 PM, Chris Albertson wrote:
> > A fast control loop that drives each motor at a given speed and a second
> > slower control loop that figures out what that speed should be.   The
> > second loop typically uses "PID" even if only in fact the "P" is used.
> >
> > That can be used to drive any number of motors all at their correct
> speeds.
> >
> >
> > On Mon, Jul 13, 2020 at 7:28 PM R C  wrote:
> >
> >> Interesting,
> >>
> >>
> >> but I already have the motors,  and  the gears are on their way.   What
> >> I was really looking for is how to drive the stepper-drivers, he DM542
> >> series ones.
> >>
> >>
> >> Ron
> >>
> >>
> >>
> >> On 7/13/20 7:53 PM, cogoman via Emc-users wrote:
> >>> I recently discovered geared stepper motors.
> >>>
> >>>
> >>
> http://www.zyltech.com/nema-17-stepper-motor-geared-planetary-gearbox-1-7-a-3-1-nm-435-ozin/
> >>>
> >>> I've been happy with zyltech in the past.  I bought one of these for
> >>> evluation, but the specs seem to be great for CNC. Low enough current
> >>> to work with a stepstick, High enough torque for a fairly powerful
> >>> machine, and less than 4 mH inductance should let it step pretty fast.
> >>>
> >>> 5.18:1 gear ratio should reduce that 4 meter spur gear, but the link
> >>> below has higher gear ratios that would reduce that spur gear greatly!
> >>> Backlash could be a problem for CNC, but if you are only going one
> >>> way, the less precision gearboxes might be fine.
> >>>
> >>>
> >>
> https://www.omc-stepperonline.com/geared-stepper-motor/?sort=p.price=ASC
> >>>
> >>> Once you visit the stepperonline web page you know as much about them
> >>> as I do, but their offerings might be just right for your application.
> >>>
> >>> On 7/9/20 2:23 PM, R C wrote:
>  Hello,
> 
>  this is (probably) off topic, been seen that happen.  If it is please
>  ignore it.
> 
> 
>  I am building a "motorized"  telescope mount (dobsonian) with what is
>  called an equatorial platform, it has 3 axis which I am going to
>  drive with stepper motors.
> 
> 
>  The stepper motors I use with a stepper driver, those common DM542
>  ones, the stepper motors themselves are 2A and 1.8 degrees per step.
> 
> 
>  What I want to accomplish with the equatorial platform)  (it
>  compensates for the rotation of the earth) is that,  the start and
>  end position accuracy is not that important,  smooth and
>  constant/consistent movement is.  for the azimuth/altitude precision
>  is not a really big deal, but you'd want to move these 2 axis
>  somewhat swift.
> 
> 
>  So there are a few factors to decide.
> 
> 
>  I probably want micro stepping,  what settings on the driver for
>  pulses per rev, is best to use (or is that just trial and error?)
> 
> 
>  As with PWM itself, I am probably just not too familiar with it. From
>  what I understand, the voltage I use for the motors determines how
>  fast I can go (I am going to use a 48V switching power supply).
> 
> 
>  as for PWM,  I can of course  change the length of the pulse itself
>  and, independently, change the time between two pulses. What is the
>  relation ship there?  WHat does a longer  width of the pulse itself
>  do?  and what exactly does a longer gap between the pulses do (of
>  course the wider the gap between two pulses the slower the motor
> turns).
> 
> 
>  for, especially, the equatorial platform, I want to avoid "jerking"
>  it,  meaning  starting and stopping the stepper motor as little as
>  possible and just go at a 'slow' constant speed.
> 
> 
> 
>  sorry if totally 

Re: [Emc-users] q for Chris on 5mm cal routine

[Dave Matthews]

On Wed, Jun 17, 2020 at 1:04 PM Chris Albertson
 wrote:
>
> Gene,
>
>
> I just went and looked at the Ender3 printer.  There is one major
> difference between your Ender3 and My Anet A6.   Yours uses a "Bowden Tube"
> type feed system and mine is direct drive.  So on your system, the motor
> that moves the PLA filament is mounted to the frame and pushes the
> filament into the Teflon tube.   On my printer, the motor is an
> integral part of the print head and those "pusher gears" are just a few mm
> above the nozzle. They use fins and a fan to keep heat from the motor.
> The advantage of your is a lighter head that can move faster and more
> accurately.   Mine has better control of plastic quantity and flow rate.
>  People will argue which is best.
>

This post reminded me that I had a problem with the feed on my CR-10s
at one time.  The grub screws on the filament feed gear were slipping
on the shaft.  I ended up getting some gears with two screws and that
took care of the problem.  Check to see if the filament feed gear is
slipping.  I am guessing the Ender and CR-10 used the same design and
parts.

Dave


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Re: [Emc-users] pix too big, rejected, so Chris is only other receiver.

[Dave Matthews]

On Fri, Jun 5, 2020 at 8:34 AM Gene Heskett  wrote:
>
>
> After doing that one, i took the right post slider loose and loosened its
> fit on the vertical, as I noted there were Z movements that weren't
> making to the other end of the bar.
>
> And raised the tension in the x belt which turned out to be slack enough
> it was just laying on the right end idler pulley.
>
> But before I try another 10 hour print, I'd like to see an improved much
> better filled tooth profile, my guess is that its 10% or less, no high
> strength fill behind what might be called teeth.  I'd like to see a 100%
> fill for at least 4mm behind the teeth, but cura isn't doing any of
> that.  Those teeth are 100% crushable all the way to the bore
> reinforcement.

Do yourself a big favor and print a calibration cube and a benchy.
You may also want to do a temperature tower to figure out your
filament.  Printing real parts before you get the numbers figured out
is a waste of time.  When I got done with it I found that I could do
most things by taking the Cura defaults and setting bed temp to 60 and
filament in the 190-200 region.

Dave


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Re: [Emc-users] missing feature of openscad

[Dave Matthews]

On Tue, Jun 2, 2020, 20:09 Gene Heskett  wrote:

> On Tuesday 02 June 2020 18:22:20 Chris Albertson wrote:
>
> > Cura has about 200 settings that you can change.   You might try
> > printing on a raft or using say 50% infill density and Gyroid pattern
> > I print small gears with 1.6 wall thickness.   Slowing the speed to
> > 30mm/sec works some times
> >
> That last was so disappointing that I now have a 12 tooth gear, with a
> hub 12mm high, printing at 30mm and 100% infill.  That of course
> disclosed that I wasn't anywhere near close enough to the bed for
> adhesion, so I raised the rear of it about a turn of the wheels.  Then
> it started sticking.  But there so little spring left to lift the bed
> that I'm going to modify the z switch to lower it another 1/8 ", which
> will compress the springs and make them far more repeatable.
>

I found that cleaning the glass with alcohol and then giving it a spray of
aquanet hairspray helped adhesion a lot.  I usually had to let the glass
cool completely to get the parts off.

Dave

>

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Re: [Emc-users] missing feature of openscad

[Dave Matthews]

On Tue, Jun 2, 2020 at 11:39 AM Gene Heskett  wrote:
>
> On Tuesday 02 June 2020 05:57:59 Chris Albertson wrote:
>
> > Docs?  The entire printer is open source.
>
> No it is NOT!  The Cura slicer is windows only. And there will be a
> language barrier that prevents a request for that source code from ever
> being replied to.  Been there, done that too many times already.
>
When I go to the Cura downloads page it lists - Ultimaker Cura 4.6.1
Linux, 64 bit

https://ultimaker.com/software/ultimaker-cura

Dave


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Re: [Emc-users] linuxcnc on modern hardware

[Dave Matthews]

It was free from when we cleaned out the FIL's place.  The one before
that was in the heap of rubble of retired computers.  No reason to buy
new to run a router.

Dave

On Sun, Apr 19, 2020 at 2:08 PM N  wrote:
>
> > Hi,
> > For reasons I dont understand, many people prefer to use extremely legacy
> > hardware to run linuxcnc.
>
> Plenty available cheap and no reason to user newer.
>
>
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Re: [Emc-users] preempt-rt on the pi4b

[Dave Matthews]

On Tue, Feb 18, 2020 at 4:23 PM Gene Heskett  wrote:
>
> >
> Humm, yur right, so until I can fix that, add lathe-stf to the end of the
> address bar, and that will get you a directory listing, find
> linuxcnc4pi4b in that list and click on it.  You should be there.
>
That did the trick.  I grabbed linuxcnc-uspace_2.9.0~pre0_armhf.deb
while I was there.  Guessing that is what I want to install when I
have time to play with this.

Dave


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Re: [Emc-users] preempt-rt on the pi4b

[Dave Matthews]

On Tue, Feb 18, 2020 at 3:37 PM Gene Heskett  wrote:

>
> Assuming it already has the full raspbian 10.2 or later image on the u-sd
> card, goto my site in the sig, find the lathe-stf link, click on it,
> find the linuxcnc4pi4b directory and download rt-kernel.tgz.  Unpack it
> in /, reboot, and it should show a uname -a of:
> Linux rpi4.coyote.den 4.19.71-rt24-v7l+ #1 SMP PREEMPT RT Thu Feb 6
> 07:09:18 EST 2020 armv7l GNU/Linux
>
Not finding it on the url in your sig.  The word lathe appears on the
page twice.  There is a link near them but that goes 404.

Dave


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Re: [Emc-users] [Emc-developers] Looking to make hex offset list for NML status shared memoryr

[Dave Matthews]

On Mon, Feb 17, 2020, 18:09 John Dammeyer  wrote:

>
> You're right of course.   I don't think the target is existing BBB users.
> I think the target market is people whos PCs are running MACH and the
> hardware has potentially reached end of life.   I found with this latest
> set of PCs I bought that the motherboard hardware is too new for WIN-XP.
> So one has to find drivers.  It's like plugging in an ASUS USB WiFi
> module.  Doesn't work with WIN-XP.  Does with WIN-7.  Could never find a
> driver for LinuxCNC.
>

The Mach 3 guys will just buy a $115 uc100 and plug into the BOB or the new
$50 Sainsmart BOB/motion controller board and plug into a USB port.  That
is pretty much the standard set up for Gatton CNC builders.

Dave

>

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Re: [Emc-users] Real-time OS for machine controllers

[Dave Matthews]

No.  Commercial software.

On Sat, Jan 25, 2020, 22:41 Stuart Stevenson  wrote:

> Is Mach 3/4 open source?
>
>
>

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Re: [Emc-users] 2.7.15 released!

[Dave Matthews]

Wouldn't something like sudo apt-get upgrade linuxcnc-uspace restrict the
upgrade to just LinuxCNC?

Dave

On Mon, Jan 6, 2020, 00:04 John Dammeyer  wrote:

> > On 2020-01-05 18:43, John Dammeyer wrote:
> > > My system boots and tells me it's 2.7.14.  If I unplug the MESA card
> from
> > the Ethernet port and connect it to the LAN what steps would I take to
> > upgrade without breaking anything.
> > > Is it as simple as
> > > sudo apt-get update
> > > sudo apt-get upgrade
> > >
> > > I hate to muck with anything that is working...
> > >
> >
> > Be careful to not upgrade the OS.  'sudo apt-get upgrade' may want to
> > upgrade the kernel and then, you may not have the real time kernel.
> >
> > Maybe try 'sudo apt-get --simulate upgrade' to see what is to be done.
> >
> > Tom Dean
>
> Hi Tom,
> That's the reason I'm asking.  I don't know what needs to be done so what
> it tells me won't make any sense.
> John
>
>
>
>
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Re: [Emc-users] How do I get 2.8 installed?

[Dave Matthews]

For some reason I didn't get that to work.  Looking at what did work
it should have.  I may not have hit save or something.

I found this link on the LinuxCNC
forumshttps://forum.linuxcnc.org/9-installing-linuxcnc/35839-updating-to-latest-version-of-2-8?start=20
 and with a couple tweaks now have 2.8 installed.  His instructions
have an error in Step 2.  The lines need to start with http://

The machine is now happily running 2 instances of glxgears and
streaming from Youtube.

Latency test is showing max jitter of 45687 on Servo and 40422 on
Base.  That is with the onboard video.  I may drop a card in and see
if I can get it better but that is probably more than adequate for my
Gatton CNC on a parallel port.  I am running it at 3200
microsteps/inch and don't need over 100 ipm for my purposes.

Dave

On Sun, Dec 29, 2019 at 9:32 PM Phillip Carter  wrote:
>
> I am not sure when it will be released, it can't be too far away.
>
> You should be good to go using the 2.7-rtpreempt changed to 2.8-rtpreempt.
>
> You could also download the the latest package from 
> http://buildbot.linuxcnc.org/dists/stretch/2.8-rtpreempt/ 
> <http://buildbot.linuxcnc.org/dists/stretch/2.8-rtpreempt/> and install it 
> directly.
>
> > On 30 Dec 2019, at 1:17 pm, Dave Matthews  wrote:
> >
> > I'll give it a try in the morning.  That page could use a bit of updating.
> > I found a few other options to try also.  Any idea when 2.8 will be the
> > default install?  It looks like it has been stable for quite a while.
> >
> > Dave
> >
> > On Sun, Dec 29, 2019, 21:11 Phillip Carter  wrote:
> >
> >> I think it may be sudo apt-get install linuxcnc-uspace
> >>
> >>> On 30 Dec 2019, at 12:53 pm, Dave Matthews  wrote:
> >>>
> >>> On Mon, Dec 30, 2019 at 12:11 AM Phillip Carter 
> >> wrote:
> >>>>
> >>>>
> >>>>> I installed the dependency fail for the sudo apt-key adv --keyserver
> >>>>> hkp://keys.gnupg.net --recv-key EF1B07FEE0EE663E step.  When I try to
> >>>>> install the key I get:
> >>>>> Executing: /tmp/apt-key-gpghome.RJo9NWtHgB/gpg.1.sh --keyserver
> >>>>> hkp://keys.gnupg.net --recv-key EF1B07FEE0EE663
> >>>>> gpg: "EF1B07FEE0EE663" not a key ID: skipping
> >>>>>
> >>>> you are missing the "E" at the end
> >>> Added the E and reran the command.  It worked.  I think I got it to
> >>> work before that but blew it on the retry of the command.
> >>>
> >>>>
> >>>>
> >>>>> and there is no /etc/apt/sources.list.d/linuxcnc-buildbot.list created.
> >>>>>
> >>>>> I created the file and added the 2.7 entries and edited them to 2.8.
> >>>>> That got me an install of the 2.8 docs but nothing else.
> >>>>>
> >>>>> I don't remember what incantations I did to install 2.8 on the old
> >>>>> machine.  I think it was just pointing at repositories and using
> >>>>> apt-get.
> >>>>>
> >>>> if you created /etc/apt/sources.list.d/linuxcnc-buildbot.list then
> >> check your /etc/apt/sources.list file and comment out any lines that
> >> reference linuxcnc
> >>>
> >>> No references in /etc/apt/sources.list.  I tried commenting them out
> >>> in /etc/apt/sources.list.d/linuxcnc-list but no change.
> >>>
> >>> I tried using the 2.7 entries replacing the 7 with 8 and also tried
> >>> pointing to Master with no luck.
> >>> deb http://buildbot.linuxcnc.org/ stretch master-rtpreempt
> >>> deb-src http://buildbot.linuxcnc.org/ stretch master-rtpreempt
> >>>
> >>> cncuser@localhost:/etc/apt/sources.list.d$ cat linuxcnc.list
> >>> deb http://linuxcnc.org/ stretch base
> >>> #deb-src http://linuxcnc.org/ stretch base
> >>> deb http://linuxcnc.org/ stretch 2.7-uspace
> >>> #deb-src http://linuxcnc.org/ stretch 2.7-uspace
> >>> #deb http://buildbot.linuxcnc.org/ stretch 2.7-rtpreempt
> >>> #deb-src http://buildbot.linuxcnc.org/ stretch 2.7-rtpreempt
> >>>
> >>> cncuser@localhost:/etc/apt/sources.list.d$ cat linuxcnc.list
> >>> deb http://linuxcnc.org/ stretch base
> >>> #deb-src http://linuxcnc.org/ stretch base
> >>> deb http://linuxcnc.org/ stretch 2.7-uspace
> >>> #deb-src http://linuxcnc.org/ stretch 2.7-uspace
> >>> #deb http://buildbot.linuxcnc.org/ stretch 2.7-rtpreempt
> >

Re: [Emc-users] How do I get 2.8 installed?

[Dave Matthews]

I'll give it a try in the morning.  That page could use a bit of updating.
I found a few other options to try also.  Any idea when 2.8 will be the
default install?  It looks like it has been stable for quite a while.

Dave

On Sun, Dec 29, 2019, 21:11 Phillip Carter  wrote:

> I think it may be sudo apt-get install linuxcnc-uspace
>
> > On 30 Dec 2019, at 12:53 pm, Dave Matthews  wrote:
> >
> > On Mon, Dec 30, 2019 at 12:11 AM Phillip Carter 
> wrote:
> >>
> >>
> >>> I installed the dependency fail for the sudo apt-key adv --keyserver
> >>> hkp://keys.gnupg.net --recv-key EF1B07FEE0EE663E step.  When I try to
> >>> install the key I get:
> >>> Executing: /tmp/apt-key-gpghome.RJo9NWtHgB/gpg.1.sh --keyserver
> >>> hkp://keys.gnupg.net --recv-key EF1B07FEE0EE663
> >>> gpg: "EF1B07FEE0EE663" not a key ID: skipping
> >>>
> >> you are missing the "E" at the end
> > Added the E and reran the command.  It worked.  I think I got it to
> > work before that but blew it on the retry of the command.
> >
> >>
> >>
> >>> and there is no /etc/apt/sources.list.d/linuxcnc-buildbot.list created.
> >>>
> >>> I created the file and added the 2.7 entries and edited them to 2.8.
> >>> That got me an install of the 2.8 docs but nothing else.
> >>>
> >>> I don't remember what incantations I did to install 2.8 on the old
> >>> machine.  I think it was just pointing at repositories and using
> >>> apt-get.
> >>>
> >> if you created /etc/apt/sources.list.d/linuxcnc-buildbot.list then
> check your /etc/apt/sources.list file and comment out any lines that
> reference linuxcnc
> >
> > No references in /etc/apt/sources.list.  I tried commenting them out
> > in /etc/apt/sources.list.d/linuxcnc-list but no change.
> >
> > I tried using the 2.7 entries replacing the 7 with 8 and also tried
> > pointing to Master with no luck.
> > deb http://buildbot.linuxcnc.org/ stretch master-rtpreempt
> > deb-src http://buildbot.linuxcnc.org/ stretch master-rtpreempt
> >
> > cncuser@localhost:/etc/apt/sources.list.d$ cat linuxcnc.list
> > deb http://linuxcnc.org/ stretch base
> > #deb-src http://linuxcnc.org/ stretch base
> > deb http://linuxcnc.org/ stretch 2.7-uspace
> > #deb-src http://linuxcnc.org/ stretch 2.7-uspace
> > #deb http://buildbot.linuxcnc.org/ stretch 2.7-rtpreempt
> > #deb-src http://buildbot.linuxcnc.org/ stretch 2.7-rtpreempt
> >
> > cncuser@localhost:/etc/apt/sources.list.d$ cat linuxcnc.list
> > deb http://linuxcnc.org/ stretch base
> > #deb-src http://linuxcnc.org/ stretch base
> > deb http://linuxcnc.org/ stretch 2.7-uspace
> > #deb-src http://linuxcnc.org/ stretch 2.7-uspace
> > #deb http://buildbot.linuxcnc.org/ stretch 2.7-rtpreempt
> > #deb-src http://buildbot.linuxcnc.org/ stretch 2.7-rtpreempt
> >
> > cncuser@localhost:/etc/apt/sources.list.d$ sudo apt-get update
> > Ign:1 http://ftp.debian.org/debian stretch InRelease
> > Hit:2 http://security.debian.org/debian-security stretch/updates
> InRelease
> > Ign:3 http://linuxcnc.org stretch InRelease
> > Ign:4 http://buildbot.linuxcnc.org stretch InRelease
> > Hit:5 http://ftp.debian.org/debian stretch Release
> > Hit:7 http://linuxcnc.org stretch Release
> > Hit:8 http://buildbot.linuxcnc.org stretch Release
> > Reading package lists... Done
> > cncuser@localhost:/etc/apt/sources.list.d$ sudo apt-get install linuxcnc
> > Reading package lists... Done
> > Building dependency tree
> > Reading state information... Done
> > Package linuxcnc is not available, but is referred to by another package.
> > This may mean that the package is missing, has been obsoleted, or
> > is only available from another source
> >
> > E: Package 'linuxcnc' has no installation candidate
> >
> >
> > Anyplace I can just grab an iso and install it or the correct entries
> > for  /etc/apt/sources.list. or do I need to grab the sources and
> > build?  The buildbot page instructions are way out of date.
> >
> > Dave
> >
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
>
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Re: [Emc-users] How do I get 2.8 installed?

[Dave Matthews]

On Mon, Dec 30, 2019 at 12:11 AM Phillip Carter  wrote:
>
>
> > I installed the dependency fail for the sudo apt-key adv --keyserver
> > hkp://keys.gnupg.net --recv-key EF1B07FEE0EE663E step.  When I try to
> > install the key I get:
> > Executing: /tmp/apt-key-gpghome.RJo9NWtHgB/gpg.1.sh --keyserver
> > hkp://keys.gnupg.net --recv-key EF1B07FEE0EE663
> > gpg: "EF1B07FEE0EE663" not a key ID: skipping
> >
> you are missing the "E" at the end
Added the E and reran the command.  It worked.  I think I got it to
work before that but blew it on the retry of the command.

>
>
> > and there is no /etc/apt/sources.list.d/linuxcnc-buildbot.list created.
> >
> > I created the file and added the 2.7 entries and edited them to 2.8.
> > That got me an install of the 2.8 docs but nothing else.
> >
> > I don't remember what incantations I did to install 2.8 on the old
> > machine.  I think it was just pointing at repositories and using
> > apt-get.
> >
> if you created /etc/apt/sources.list.d/linuxcnc-buildbot.list then check your 
> /etc/apt/sources.list file and comment out any lines that reference linuxcnc

No references in /etc/apt/sources.list.  I tried commenting them out
in /etc/apt/sources.list.d/linuxcnc-list but no change.

I tried using the 2.7 entries replacing the 7 with 8 and also tried
pointing to Master with no luck.
deb http://buildbot.linuxcnc.org/ stretch master-rtpreempt
deb-src http://buildbot.linuxcnc.org/ stretch master-rtpreempt

cncuser@localhost:/etc/apt/sources.list.d$ cat linuxcnc.list
deb http://linuxcnc.org/ stretch base
#deb-src http://linuxcnc.org/ stretch base
deb http://linuxcnc.org/ stretch 2.7-uspace
#deb-src http://linuxcnc.org/ stretch 2.7-uspace
#deb http://buildbot.linuxcnc.org/ stretch 2.7-rtpreempt
#deb-src http://buildbot.linuxcnc.org/ stretch 2.7-rtpreempt

cncuser@localhost:/etc/apt/sources.list.d$ cat linuxcnc.list
deb http://linuxcnc.org/ stretch base
#deb-src http://linuxcnc.org/ stretch base
deb http://linuxcnc.org/ stretch 2.7-uspace
#deb-src http://linuxcnc.org/ stretch 2.7-uspace
#deb http://buildbot.linuxcnc.org/ stretch 2.7-rtpreempt
#deb-src http://buildbot.linuxcnc.org/ stretch 2.7-rtpreempt

cncuser@localhost:/etc/apt/sources.list.d$ sudo apt-get update
Ign:1 http://ftp.debian.org/debian stretch InRelease
Hit:2 http://security.debian.org/debian-security stretch/updates InRelease
Ign:3 http://linuxcnc.org stretch InRelease
Ign:4 http://buildbot.linuxcnc.org stretch InRelease
Hit:5 http://ftp.debian.org/debian stretch Release
Hit:7 http://linuxcnc.org stretch Release
Hit:8 http://buildbot.linuxcnc.org stretch Release
Reading package lists... Done
cncuser@localhost:/etc/apt/sources.list.d$ sudo apt-get install linuxcnc
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package linuxcnc is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'linuxcnc' has no installation candidate


Anyplace I can just grab an iso and install it or the correct entries
for  /etc/apt/sources.list. or do I need to grab the sources and
build?  The buildbot page instructions are way out of date.

Dave


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[Emc-users] How do I get 2.8 installed?

[Dave Matthews]

I am setting up a new machine to replace the 2.8 install that I am
currently using.  The machine that I am currently running is on its
way out.  I have a 2.7 install using the live cd install in downloads.
Install was done no network because the installer didn;t like the
network dongle.  I have since dug through my pile of cards and found a
wifi card that the machine is happy with.  2.7 launches as expected
and the machine has been updated to current Deb 9.

uname gives Linux localhost 4.9.0-8-rt-amd64 #1 SMP PREEMPT RT Debian
4.9.110-3+deb9u6 (2018-10-08) x86_64 GNU/Linux

I am trying to use the instructions on the LinuxCNC buildbot page
http://buildbot.linuxcnc.org/ in hopes that I can find a 2.8 in there.
I read that Master is now on 2.9 and I would prefer to be a little
more on the stable side and use the configs from the old 2.8 machine.

I installed the dependency fail for the sudo apt-key adv --keyserver
hkp://keys.gnupg.net --recv-key EF1B07FEE0EE663E step.  When I try to
install the key I get:
Executing: /tmp/apt-key-gpghome.RJo9NWtHgB/gpg.1.sh --keyserver
hkp://keys.gnupg.net --recv-key EF1B07FEE0EE663
gpg: "EF1B07FEE0EE663" not a key ID: skipping

and there is no /etc/apt/sources.list.d/linuxcnc-buildbot.list created.

I created the file and added the 2.7 entries and edited them to 2.8.
That got me an install of the 2.8 docs but nothing else.

I don't remember what incantations I did to install 2.8 on the old
machine.  I think it was just pointing at repositories and using
apt-get.

Any hints please?

Dave


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Re: [Emc-users] Update: Re: linuxcnc versions

[Dave Matthews]

The GUI installer has problems with my wifi dongle.  The dongle works fine
with after install.  The problem is that you can't bypass the network with
the GUI installer.

Dave

On Thu, Dec 19, 2019, 22:41 R C  wrote:

> also,  on that Stretch installation.  if you try to install on anyting
> other then the first sata port, it names the device /dev/sde, even
> though it is /dev/sda
>
>
> I think the installer is broken, I have seen that earlier.
>
>
> Ron
>
> On 12/19/19 8:05 PM, Dave Matthews wrote:
> > Odd, Stepconf ran fineon the one I did.
> >
> > Dave
> >
> > On Thu, Dec 19, 2019, 21:54 R C  wrote:
> >
> >> because a bunch of people were recommending it.
> >>
> >> Also, I managed to install "LinuxCNC Uspace 2.7.0 Debian 9 Stretch"
> >> <http://www.linuxcnc.org/testing-stretch-rtpreempt/>
> >>
> >>
> >> BUT:  there are two issues with that.
> >>
> >>
> >> 1:  It does not want to install if there is more than one drive in the
> >> system, which I can dodge by turning other drives off in the BIOS
> >>
> >>
> >> 2: There are issues with pyton,  it is trying to use something that is
> >> not there, files missing, when I start the "stepper config"
> >>
> >>
> >> Ron
> >>
> >>
> > ___
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> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
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Re: [Emc-users] Update: Re: linuxcnc versions

[Dave Matthews]

Odd, Stepconf ran fineon the one I did.

Dave

On Thu, Dec 19, 2019, 21:54 R C  wrote:

> because a bunch of people were recommending it.
>
> Also, I managed to install "LinuxCNC Uspace 2.7.0 Debian 9 Stretch"
> 
>
>
> BUT:  there are two issues with that.
>
>
> 1:  It does not want to install if there is more than one drive in the
> system, which I can dodge by turning other drives off in the BIOS
>
>
> 2: There are issues with pyton,  it is trying to use something that is
> not there, files missing, when I start the "stepper config"
>
>
> Ron
>
>

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Re: [Emc-users] Update: Re: linuxcnc versions

[Dave Matthews]

On Thu, Dec 19, 2019, 21:39 R C  wrote:

> Hello all,
>
> finally had some time to install the linux iso (LinuxCNC 2.7.14 Debian 7
> Wheezy ) again,
> I used the link as mentioned earlier
>
> (http://www.linuxcnc.org/downloads/) 
>
>
> I
>

Why are you trying to install Wheezy instead of Stretch?  It looks like it
is barfing on trying to find Wheezy updates on repos that have been turned
off.

I used the Stretch iso and the text installer worked.

Dave

>

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Re: [Emc-users] Latency Warning Messages

[Dave Matthews]

On Tue, Dec 17, 2019 at 2:00 PM John Dammeyer  wrote:
>
> Actually I think it's at one pulse per two base periods.  One to set the step 
> signals high, one to set them low.  The document referenced by "bari",
>
> How to choose your base period:
> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?TweakingSoftwareStepGeneration
>
> explains that in detail.
> John Dammeyer
>
Thank you, I hadn't seen that bit of documentation.  Looks like I can
do about 285 in/min with my current setup without any tweaking.  Half
of that is a realistic speed for my Gatton CNC to do rapids.

Dave


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Re: [Emc-users] Latency Warning Messages

[Dave Matthews]

On Tue, Dec 17, 2019 at 12:55 PM andy pugh  wrote:
>
> On Tue, 17 Dec 2019 at 17:47, Dave Matthews  wrote:
>
> > For those of us in the cheap seats how does the base thread frequency
> > relate to the maximum number of words per second sent to the parallel
> > port?
>
> The system can send a maximum of one pulse per base period.
>

And that pulse contains the information for all of the motors being
controlled.  Correct?

Dave


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Re: [Emc-users] Latency Warning Messages

[Dave Matthews]

On Tue, Dec 17, 2019 at 9:22 AM Peter C. Wallace  wrote:
>
> You can get really bad base jitter if you try to run the base thread faster 
> than
> the machine is capable of responding (the latency-tests default 40 KHz base
> thread is too fast for some systems so you might get considerably better
> reported latency at 20 KHz for example)
>
>
> Peter Wallace
> Mesa Electronics
>
For those of us in the cheap seats how does the base thread frequency
relate to the maximum number of words per second sent to the parallel
port?  I figure 20k words / second would work out to 375 inches /
minute of travel on my homebuilt CNC router.  Far faster than I would
need and thus in the range of not needing to worry about it all that
much.

Dave


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Re: [Emc-users] linuxcnc versions

[Dave Matthews]

I also had to use the text based installer.  The GUI based one was
hanging on my wifi dongle and I couldn't find a way to bypass it
connecting to the network.  It saw the network and asked for
credentials and then failed to make the connection.  The text one has
an option to not do the network connection.  After the install the
dongle worked just fine.  This is using an ISO pulled about a month
ago.

Dave

On Sun, Dec 15, 2019 at 2:07 PM R C  wrote:
>
> when I installed the 2.7.14 version,  it wants to connect to a repo that
> doesn't exist.
>
> It can't find some repo and aborts the install (doesn't even start thye
> actual install)
>
>
> The debian 9.5 one does install (although it doesn't install correctly
> if there is more then 1 hard drive)
>
>
> On 12/15/19 11:56 AM, andy pugh wrote:
> >
> >
> > On Sun, 15 Dec 2019 at 18:20, R C  > > wrote:
> >
> >
> > Do you have a link of a working distro?
> >
> >
> > It should be the one here:
> >
> > http://www.linuxcnc.org/downloads/
> >
> > Are you saying that that does not work?
> >
> > --
> > 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] parallel port picie cards

[Dave Matthews]

On Thu, Dec 5, 2019 at 4:17 PM Gene Heskett  wrote:
>
> On Thursday 05 December 2019 15:01:25 Bruce Layne wrote:
>
> > I'd use a USB WiFi dongle for the software upgrades or any other
> > internet access, and use the ethernet port to control the 7i96.
> >
> That would work, except I've a neighbor that bought some sort of a
> cracker for his phone that can deduce any passwd I set on my wifi's,
> takes him about 30 seconds to crack the best phrase or a 4096 bit key,
> then he uses 80 gigs a month of my bandwidth. The cap is much higher
> than that, but it sure makes my network slow when hes hogging all my
> bandwidth. So I put up with the cat6 all over the place and the wifi is
> only turned on when my boys are visiting.
>
> > If you don't want your CNC machine on the internet most of the time,
> > pull the WiFi dongle.  I use my phone as the hotspot for my WiFi
> > connected CNC machines.  It's very convenient, secure, and it avoids
> > stringing Cat6 cable around the shop.
> >
> > On 12/5/19 6:41 AM, Gene Heskett wrote:
> > > Can that work thru a switch and maintain some modicum of decent
> > > latentcy? Since very few, and they are getting old, computers have 2
> > > ethernet ports, and I consider a net connection a pre-requisite if
> > > for no other reason than keeping the machine up to date
> >
> > ___
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> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
>  - Louis D. Brandeis
> Genes Web page 
>
>
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Turn on a firewall and block him by MAC address.

Dave


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Re: [Emc-users] installing linuxcnc

[Dave Matthews]

On Tue, Oct 29, 2019, 21:48 R C  wrote:

> Hello all,
>
>
>
> I thought I'd try linuxcnc, and see howthat works.
>
> (I have a paxton/patterson mill and lathe that I haven't used in forever).
>
>
> I downloaded the linuxcnc iso and burned a disc, however it seems it
> wants another CD , or from what I read have Ubuntu or so installed?
>
> I saw Ubuntu 10.04 mentioned, but isn't that somewhat old?
>
> Do I install that first and then the linuxcnc CD?
>
>
> Also, is there a version that can be installed/compiled on RHEL/Centos?,
> has someone tried that?
>
>
> thanks,
>
>
> Ron
>
>
>
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I downloaded the Debian Stretch iso a few weeks ago and threw it on a
machine a couple days ago.  I went on fine except for the installer not
wanting to work with my USB network dongle (works fine with the live
version).  I got around that by using the text installer which lets you
bypass the network setup easily.  Try either the Stretch or Wheezy setups.

Dave

>
>

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Re: [Emc-users] Mesa cards for a CNC router

[Dave Matthews]

On Sun, Oct 6, 2019 at 4:04 PM Dave Matthews  wrote:
>
> I am thinking about changing my Gatton CNC over from a parallel port
> and BOB to a usb or ethernet setup.  The current setup works but from
> what I have read I will have smoother control with one of the Mesa
> boards.
>
> I think that the board that would do this is a Mesa 7I96.  It is
> fairly inexpensive, runs5 axis, and interfaces by ethernet.  I am
> currently running four steppers as X, Y, Z, A on 2.9.  Potentially I
> would like to add a rotary axis so I would just go with a 5 axis board
> to be future proof.
>
> Is the 7i96 the correct choice or should I look at something else?  I
> will be replacing a $20 BOB that is hooked to DM542 drivers.
>
> Dave

Replying to my original.  Thanks for the input.  The Mesa site doesn't
make it very clear as to what does what.  I will be grabbing the docs
on the 7i92 and 7i96 families and figure out which to get.  Probably
one of the 7i92 types as there is almost no cost saving when you add
in the ribbon cable and it will replace the space taken up by the
current BOB.

Dave


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[Emc-users] Mesa cards for a CNC router

[Dave Matthews]

I am thinking about changing my Gatton CNC over from a parallel port
and BOB to a usb or ethernet setup.  The current setup works but from
what I have read I will have smoother control with one of the Mesa
boards.

I think that the board that would do this is a Mesa 7I96.  It is
fairly inexpensive, runs5 axis, and interfaces by ethernet.  I am
currently running four steppers as X, Y, Z, A on 2.9.  Potentially I
would like to add a rotary axis so I would just go with a 5 axis board
to be future proof.

Is the 7i96 the correct choice or should I look at something else?  I
will be replacing a $20 BOB that is hooked to DM542 drivers.

Dave


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[Emc-users] What is nopers on the image name?

[Dave Matthews]

Dumb question.  I downloaded the 2.8 image and have boot choices of
AMD64 and AMD64 nopers (among other choices).  Google isn't being good
about telling me what the difference is.  What does nopers mean and
which option would I want to use for a dedicated cnc router?

Dave


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Re: [Emc-users] Debian 9 / LinuxCNC iso?

[Dave Matthews]

Yep.  That is a good solution.  Simple things to make it easier for people
to get away from Mach 3 and other obsolete software.

Dave

On Tue, Jul 2, 2019, 18:46 John Dammeyer  wrote:

> Break the link to the old software so the Wheezy isn't where google thinks
> it is.  Then also fix the getting-started doc.  Don't need to do anything
> with google.
>
> John
>
>
> > -Original Message-----
> > From: Dave Matthews [mailto:n36...@gmail.com]
> > Sent: July-02-19 3:33 PM
> > To: Enhanced Machine Controller (EMC)
> > Subject: Re: [Emc-users] Debian 9 / LinuxCNC iso?
> >
> > Perhaps there is a way to correct the documentation that is pointed at
> > by Google?  That way the correct answer would be found from either
> > route.
> >
> > Dave
> >
> > On Tue, Jul 2, 2019 at 5:43 PM andy pugh  wrote:
> > >
> > > On Tue, 2 Jul 2019 at 20:54, Dave Matthews  wrote:
> > > >
> > > > No, I was looking at the downloads page I could find with Google.
> > > > http://linuxcnc.org/docs/html/getting-started/getting-linuxcnc.html
> > >
> > > The correct link is the one you get if you click the "Downloads" link
> > > on the LinuxCNC.org home page.
> > >
> > > It is unfortunate if Google suggests a different link.
> > >
> > > --
> > > 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, 1916
> > >
> > >
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> >
> >
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Re: [Emc-users] Debian 9 / LinuxCNC iso?

[Dave Matthews]

Perhaps there is a way to correct the documentation that is pointed at
by Google?  That way the correct answer would be found from either
route.

Dave

On Tue, Jul 2, 2019 at 5:43 PM andy pugh  wrote:
>
> On Tue, 2 Jul 2019 at 20:54, Dave Matthews  wrote:
> >
> > No, I was looking at the downloads page I could find with Google.
> > http://linuxcnc.org/docs/html/getting-started/getting-linuxcnc.html
>
> The correct link is the one you get if you click the "Downloads" link
> on the LinuxCNC.org home page.
>
> It is unfortunate if Google suggests a different link.
>
> --
> 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, 1916
>
>
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Re: [Emc-users] Debian 9 / LinuxCNC iso?

[Dave Matthews]

Thanks.  That one is buried in the search results.  The one that comes
up as Getting Linux CNC doesn't list anything newer than Wheezy.

Dave

On Tue, Jul 2, 2019 at 3:24 PM bari  wrote:
>
>
> Images based on Debian Stretch, the 4.9.x RT-PREEMPT kernel, and a
> released version of LinuxCNC 2.7.x.
>
> http://www.linuxcnc.org/testing-stretch-rtpreempt/
>
> On 7/2/19 2:09 PM, Dave Matthews wrote:
> > Are there any plans to update the downloadable ISO?  Is is currently
> > Debian 7/Wheezy so a bit dated.  I see another installation in my near
> > future and it is easier to download once when your ISP seems to use
> > barbed wire instead of copper.
> >
> > Dave
> >
> >
> > ___
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> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
>
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Re: [Emc-users] Debian 9 / LinuxCNC iso?

[Dave Matthews]

No, I was looking at the downloads page I could find with Google.
http://linuxcnc.org/docs/html/getting-started/getting-linuxcnc.html

It is titled Getting LinuxCNC.  The one you linked is a few down in
the search results.  I had clicked on the one that came up first and
didn't see yours.

Dave

On Tue, Jul 2, 2019 at 3:44 PM andy pugh  wrote:
>
> On Tue, 2 Jul 2019 at 20:11, Dave Matthews  wrote:
> >
> > Are there any plans to update the downloadable ISO?  Is is currently
> > Debian 7/Wheezy so a bit dated.
>
> Have you looked on the "Download" page?
>
> http://www.linuxcnc.org/downloads/
>
> --
> 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, 1916
>
>
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[Emc-users] Debian 9 / LinuxCNC iso?

[Dave Matthews]

Are there any plans to update the downloadable ISO?  Is is currently
Debian 7/Wheezy so a bit dated.  I see another installation in my near
future and it is easier to download once when your ISP seems to use
barbed wire instead of copper.

Dave


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Re: [Emc-users] Wanted, small engine whiz

[Dave Matthews]

I had a chuck next to the house a couple years ago.  I haven't seen him
since a cup of bleach and a cup of ammonia accidentally fell into the hole
...


On Tue, Jun 18, 2019, 12:09 Dave Cole  wrote:

> On 6/18/2019 11:20 AM, Gene Heskett wrote:
> > To me, thats a sign they never paid any
> > attention to the physics when they were in school all those years ago,
> > but I'm doing it on an 8th grade education that ended in '49.  Gotta
> > move my ears back a bit to make room for the grin.:)
>
> There are a number of technical areas that have been ignored by schools
> and there are some huge shortages in talent because of that.
>
> Skilled machinists are only one.   Skilled metal fabricators are hard to
> find.   Radio transmitter maintenance?  Where would you even go to
> school to learn that?
>
> I'm doing fine other than working a bit more than I would like for this
> time of year.
> I'm not getting any younger and I reach for the bottle of Aleve a lot
> more than I used to.
>
> I've got a Bridgeport mill waiting for a conversion.   But I need to
> pour some concrete to set it on.
> I have an addition on the back of my garage I added years ago and a
> ground hog (or army of ground hogs) invaded and they have put two
> tunnels under the floor.  So I'm battling ground hogs for the moment.
> I think I found the fix after much searching.  Ammonia poured in the
> holes will drive them out and keep them out... I have been told...
> nothing else worked.  They ignored live traps loaded with tasty food.
> They are extremely wary.
>
> Dave
>
>
>
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Re: [Emc-users] Looking fro some input from the community

[Dave Matthews]

On Tue, Apr 23, 2019 at 4:40 PM Dave Matthews  wrote:
>
> This is what I am running.
>
> 03:06.0 Communication controller [0780]: MosChip Semiconductor
> Technology Ltd. PCI 9835 Multi-I/O Controller [9710:9835] (rev 01)
>
> It is a Rosewell (NewEgg brand).  Looking through my order history it
> looks like I got it in 2009 and they still sell it.
> https://www.newegg.com/Product/Product.aspx?Item=N82E16815166006 for
> all of $15 then and it is still $15.
>
> Dave
>
>

I should have added that I am using this with a $20 BOB.

Dave


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Re: [Emc-users] Looking fro some input from the community

[Dave Matthews]

This is what I am running.

03:06.0 Communication controller [0780]: MosChip Semiconductor
Technology Ltd. PCI 9835 Multi-I/O Controller [9710:9835] (rev 01)

It is a Rosewell (NewEgg brand).  Looking through my order history it
looks like I got it in 2009 and they still sell it.
https://www.newegg.com/Product/Product.aspx?Item=N82E16815166006 for
all of $15 then and it is still $15.

Dave

On Tue, Apr 23, 2019 at 1:05 PM Joe Hildreth
 wrote:
>
> Thanks Andy.  I should bite the bullet and scrape up a little money for some 
> Mesa cards.  They will be an excellent addition to the tutorial series.
>
> Joe
>
>
> - On Apr 23, 2019, at 11:52 AM, andy pugh bodge...@gmail.com wrote:
>
> > On Tue, 23 Apr 2019 at 17:24, Joe Hildreth  
> > wrote:
> >
> >> How do you test if a card works properly in EPP mode?  This would be good
> >> information to add to the list for those using your hardware.
> >
> > I have tested by plugging it in to a Mesa 7i43.
> >
> > --
> > 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, 1916
> >
> >
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Re: [Emc-users] different idea re mister

[Dave Matthews]

On Mon, Mar 25, 2019 at 1:52 PM Gene Heskett  wrote:
>
> On Monday 25 March 2019 13:15:05 Roland Jollivet wrote:
>
> > On Mon, 25 Mar 2019 at 18:45, Gene Heskett 
> wrote:
> > > On Monday 25 March 2019 11:11:21 John Dammeyer wrote:
> > > > Can't you just build yourself a small little gear pump?
> > > > John
> > >
> > > The thought has crossed my mind John, but something like a
> > > windshield washer pump is about 100x the flow needed. How well they
> > > might work after being restricted or the current turned down is an
> > > unknown. They are also often designed to go in the tank, or plug
> > > into a port on the bottom of the tank, both of which precludes using
> > > any tank but the matching one if you want a dependable seal.  And
> > > those are too big for this. I don't need, nor want to carry a nearly
> > > gallon tank on the back of the gantry.  That, because it higher than
> > > the mister nozzle, would also lead to syphon problems when turned
> > > off, so that idea got rapidly discarded. A teeny centrifugal pump
> > > might work, as their draw goes down with lowered flow because its
> > > restricted, but I've not come across such a critter. They don't self
> > > prime either.
> >
> > Buy an electric fuel pump from your local auto shop. The motor kind,
> > not the old oscillating slug.
> >
> > They're quite high pressure and low flow rate. They vary according to
> > whether they're in/out of the tank, and type of injection system.
> >
> And much high priced. Into the 4th digit left of the .


$27 at Autozone.  You can probably find one cheaper if you look.
https://www.autozone.com/fuel-systems/fuel-pump-universal/spectra-premium-12-volt-2-5-7-psi-25-gph-electric-fuel-pump-for-fi-applications/349165_0_0

Dave

> > __
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> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page 
>
>
>
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Re: [Emc-users] Jog pins not showing in HAL configuration

[Dave Matthews]

Thanks.  I guess the example I was watching is out of date.  Would
that make halui.axis.x.minus and  halui.axis.x.plus the correct pins
to use to implement jogging now?

Dave

On Sat, Mar 23, 2019 at 5:50 PM Dewey Garrett  wrote:
>
>
>
> http://linuxcnc.org/docs/master/html/getting-started/updating-linuxcnc.html#_halui
> --
> Dewey Garrett
>
>
>
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[Emc-users] Jog pins not showing in HAL configuration

[Dave Matthews]

I am trying to set up a custom panel with jog buttons.  When I tried
to connect the buttons on the panel I got an error that
halui.0.jog.minus was not found.  I looked and none of the jog pins
are showing in the HAL configuration.

The only pins with jog in them are axis and joint pins.
cncuser@Deb9CNC:~$ halcmd show pin halui* | grep jog
10  float IN0.2  halui.axis.jog-deadband
10  float IN  0  halui.axis.jog-speed
10  float IN0.2  halui.joint.jog-deadband
10  float IN  0  halui.joint.jog-speed

Version is LinuxCNC/AXIS version
2.8.0-pre1-4092-ge48135926

Attached are a screeshot of the HAL Configuration and the output of
halcmd show pin halui*.

Any suggestions on where to start looking?

Dave
LinuxCNC/AXIS version
2.8.0-pre1-4092-ge48135926

cncuser@Deb9CNC:~$ halcmd show pin halui* | grep jog
10  float IN0.2  halui.axis.jog-deadband
10  float IN  0  halui.axis.jog-speed
10  float IN0.2  halui.joint.jog-deadband
10  float IN  0  halui.joint.jog-speed
cncuser@Deb9CNC:~$ halcmd show pin halui*
Component Pins:
Owner   Type  Dir Value  Name
10  bit   IN  FALSE  halui.abort
10  float IN  0  halui.axis.a.analog
10  float IN  0  halui.axis.a.increment
10  bit   IN  FALSE  halui.axis.a.increment-minus
10  bit   IN  FALSE  halui.axis.a.increment-plus
10  bit   IN  FALSE  halui.axis.a.minus
10  bit   IN  FALSE  halui.axis.a.plus
10  bit   IN  FALSE  halui.axis.a.select
10  float IN  0  halui.axis.b.analog
10  float IN  0  halui.axis.b.increment
10  bit   IN  FALSE  halui.axis.b.increment-minus
10  bit   IN  FALSE  halui.axis.b.increment-plus
10  bit   IN  FALSE  halui.axis.b.minus
10  bit   IN  FALSE  halui.axis.b.plus
10  bit   IN  FALSE  halui.axis.b.select
10  float IN  0  halui.axis.c.analog
10  float IN  0  halui.axis.c.increment
10  bit   IN  FALSE  halui.axis.c.increment-minus
10  bit   IN  FALSE  halui.axis.c.increment-plus
10  bit   IN  FALSE  halui.axis.c.minus
10  bit   IN  FALSE  halui.axis.c.plus
10  bit   IN  FALSE  halui.axis.c.select
10  float IN0.2  halui.axis.jog-deadband
10  float IN  0  halui.axis.jog-speed
10  u32   OUT0x  halui.axis.selected
10  float IN  0  halui.axis.selected.increment
10  bit   IN  FALSE  halui.axis.selected.increment-minus
10  bit   IN  FALSE  halui.axis.selected.increment-plus
10  bit   IN  FALSE  halui.axis.selected.minus
10  bit   IN  FALSE  halui.axis.selected.plus
10  float IN  0  halui.axis.u.analog
10  float IN  0  halui.axis.u.increment
10  bit   IN  FALSE  halui.axis.u.increment-minus
10  bit   IN  FALSE  halui.axis.u.increment-plus
10  bit   IN  FALSE  halui.axis.u.minus
10  bit   IN  FALSE  halui.axis.u.plus
10  bit   IN  FALSE  halui.axis.u.select
10  float IN  0  halui.axis.v.analog
10  float IN  0  halui.axis.v.increment
10  bit   IN  FALSE  halui.axis.v.increment-minus
10  bit   IN  FALSE  halui.axis.v.increment-plus
10  bit   IN  FALSE  halui.axis.v.minus
10  bit   IN  FALSE  halui.axis.v.plus
10  bit   IN  FALSE  halui.axis.v.select
10  float IN  0  halui.axis.w.analog
10  float IN  0  halui.axis.w.increment
10  bit   IN  FALSE  halui.axis.w.increment-minus
10  bit   IN  FALSE  halui.axis.w.increment-plus
10  bit   IN  FALSE  halui.axis.w.minus
10  bit   IN  FALSE  halui.axis.w.plus
10  bit   IN  FALSE  halui.axis.w.select
10  float IN  0  halui.axis.x.analog
10  float IN  0  halui.axis.x.increment
10  bit   IN  FALSE  halui.axis.x.increment-minus
10  bit   IN  FALSE  halui.axis.x.increment-plus
10  bit   OUT  TRUE  halui.axis.x.is-selected
10  bit   IN  FALSE  halui.axis.x.minus
10  bit   IN  FALSE  halui.axis.x.plus
10  float OUT 0  halui.axis.x.pos-commanded
10  float OUT 0  halui.axis.x.pos-feedback
10  float OUT 0  halui.axis.x.pos-relative
10  bit   IN  FALSE  halui.axis.x.select
10  float IN  0  halui.axis.y.analog
10  float IN  0  halui.axis.y.increment
10  bit   IN  FALSE  halui.axis.y.increment-minus
10  bit   IN  FALSE  halui.axis.y.increment-plus
10  bit   OUT FALSE  halui.axis.y.is-selected
10  bit   IN  FALSE  

Re: [Emc-users] Fusion 360

[Dave Matthews]

On Fri, Mar 22, 2019, 22:32 Jon Elson  wrote:

> On 03/22/2019 04:14 PM, Jeff Johnson wrote:
> > Anyone on here have opinions on Fusion 360 Cad/Cam by Autodesk?
> >
> >
> We just got set up with Autocad Inventor at work.  While
> very capable, and it has lots of good CAM strategies, it is
> SO COMPLICATED!  We have one guy here who got good with it,
> so I let my meager skills lapse, and now I barely know how
> to view a document.
>
> I think Fusion is a very similar program.
>
> Jon
>

The Lars Christensen Fusion 360 videos on YouTube are very good.  Lars
works for Autodesk.

Dave

>
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Re: [Emc-users] More cheap solar. Re: OT: Where's them fires. [Was: Re Conversational mode.

[Dave Matthews]

That looks way too good to be true so it probably isn't.  If you do
set up a grid attached system be sure to have your utility install the
correct meter or you will get to pay for every bit you pump into their
system too.  Old style meters only counted the watt hours going
through them and didn't care about the direction it was going.

Dave

On Mon, Mar 11, 2019 at 5:38 AM Gregg Eshelman via Emc-users
 wrote:
>
> This one has to be too good to be true. 
> https://www.ebay.com/itm/1500w-Flexible-Solar-Panel-Kit-System-120A-Controller-3000w-Inverter-House-Boat/333107282098
> Says it includes 15 100W panels, connecting cables, inverter etc. for $89.
> Dunno what else would be required to tie it into a domestic power supply, but 
> at that price it's highly tempting. Would definitely take a bite out of the 
> air conditioning bill in summer, if it's anywhere near as good as it 
> claims.Better control systems using PWM and MPPT can wring the best out of a 
> PV panel.
> I've a long south facing front on my shop building. It could use an awning 
> angled to 44.25 degrees, covered with solar panels. I'd have to cut down a 
> tree but I'm thinking of doing that anyway because it's an evergreen that 
> constantly drops seed pods and needles.
> IIRC if your panels aren't on movable mounts the best compromise is to angle 
> them to match your degrees latitude.
>
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Re: [Emc-users] OT: Where's them fires. [Was: Re Conversational mode.

[Dave Matthews]

On Sun, Mar 10, 2019 at 5:15 PM Chris Albertson
 wrote:

> You get about 17 megawatt hours ($2800 at my current rate) from one
> $400 panel before the 20 year  warranty expires.  That is a 30% rate
> of return on the initial investment.   Itis no wonder that Telsa is
> offering to place panels on your roof for free, but they retain
> ownership of the panels.  They just want your roof.A 30% return on
> investment look good to them.
>

I wish I could get 17 Mwh / panel over 20 years.  Based on my current
production rates I would expect about 6 Mwh per panel.  I have a 40
panel 10.4kw ground mounted array in western NY.  It is facing dead
south and is almost zero obstruction.  Production was 2016 - 13.2 Mwh,
2017 12.4 Mwh, 2018 11.7 Mwh.  Year to date is 1370 kwh.  It all comes
down to location (42.7190° N) and how much snow piles up on the panels
in the winter.  Solar is not even close to viable here.  I put it in
when it was about 60% subsidized by the state and the feds.  That made
is about a 10-11 year payback.  Our rate including delivery is
$0.10/kwh.

Dave


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Re: [Emc-users] Done with that panel code, with one exception

[Dave Matthews]

Lars Christensen has a bunch of Fusion 360 videos on YouTube.  He
works for Autodesk and has an absolute beginner series.  It is how I
learned basic Fusion 360.

Dave

On Fri, Dec 21, 2018 at 2:47 PM Dave Cole  wrote:
>
> Its hard to beat this price for 3D Cad/Cam which is free for hobbyist
> and startups making less than 100K per year.
> https://www.autodesk.com/campaigns/fusion-360-for-hobbyists
>
> It requires Window, but its free!
>
> I know of a shop that is using Inventor now and they are moving a lot of
> their work to Fusion 360.
> The cost is a fraction of the Inventor price per seat.  Something like
> $800 per year for a commercial business.
>
> I used it a couple of years ago to do some lathe parts and it was really
> easy.   The parts were designed, and G code generated in a day, and this
> was the first time we ever used it.   Mill code is more difficult than
> lathe code typically, but still, one day.  There was a lathe post that
> worked perfectly with LinuxCNC.
>
> I understand that they have improved it a lot in the last two years as well.
>
> Dave
>
> On 12/20/2018 12:46 PM, Chris Albertson wrote:
> > On Thu, Dec 20, 2018 at 2:19 AM Les Newell 
> > wrote:
> >
> >>> Can your cad/cam program do that in 300 LOC? 100k LOC maybe.
> >   Who knows.  No one EVER reads the g-code or counts the lines.  I have some
> > files with a few million lines.
> >
> > But here is another question:  Can you hand code a DB9 cut out in less than
> > 6 minutes?   THAT is what matters.
> >
> > And can you hand code a compound curve, like a small part for a human-like
> > prosthec hand?
> >
> >
> >
> >
> >>
> >>
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