[Emc-users] Tapping Head

[John Thornton]

Anyone need a tapping head?

https://mesaus.com/index.php?route=product/product&path=74_78&product_id=140

JT


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[Emc-users] Surplus Electrical Items

[John Thornton]

In the next few weeks I'll be adding a ton of surplus electrical items 
to my web store. Most are NIB and listed for a fraction of what they 
cost. If your looking for something you don't see send me and inquiry 
from the store and if I have it I'll move it to the front of the line to 
get added to the  store.


https://mesaus.com/index.php?route=product/category&path=74

Thanks for looking
JT


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Re: [Emc-users] the saga of gene vs pi's continues

[John Thornton]

I hear you Gene, while I can't remember anything from 1940 for obvious 
reasons I can remember things from late 50's like sledding down a road 
with a rather large rock at the sharp turn a the bottom... again with 
the obvious results. The one thing that Dad hated the most was loosing 
his memory and I feel the same way. It's frustrating to get up from your 
chair and walk from the machine shop to the garage and forget why you did...


JT

On 5/30/2017 1:56 AM, Gene Heskett wrote:

Short term memory is getting worse
all the time.  I can recall something from the 1940's easier than what
if anything, I had for breakfast this morning.  Upsetting to put it in
mixed company language...



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Re: [Emc-users] new thread inspired by Christophers question about 3d printer sliceing SW.

[John Thornton]

On 5/28/2017 8:36 PM, Gene Heskett wrote:

On Sunday 28 May 2017 21:07:15 John Thornton wrote:


Hi Gene,

The Z axis ball screw attachment is a bit weak and is not very
consistent. It attaches to the quill with a 1/4" screw and another one
a bit bigger. And the X ways have a bit of wear so the saddle dips a
bit in the middle.

JT


Ahh, I was geting my exercise by jumping to the conclusion you were
referring to the knee drive.

Wouldn't be the first time. :)

As for the quill drive, I think I'd make a clamp collar to grab the
bottom 1/4" of the cylinder of the quill, and plant the ball screws
bottom in that. I'd have to see & feel the table ways though. I'd assume
you've tweaked the x gibs already.  It could be slack in the y gibs
allowing the table to go off balance, pivoting up on one edge or the
other of the y saddle on the knee.  That could mimic wear in the center
of the x table.  I'd sure put a dial on it and do some wrestling.
Sometimes what you feel, and what the dial tells you are different
things.

OTOH, I am probably carrying coal to Newcastle since I've no experience
with a bridgeport.


On 5/28/2017 10:25 AM, Gene Heskett wrote:

On Sunday 28 May 2017 08:20:24 John Thornton wrote:

I wish the BP knee mill Z was good enough to 3D print I'd give it a
try... I just need to get on with making the CoreXY printer.

JT

Whats the problem with it John?


Cheers, Gene Heskett



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Re: [Emc-users] new thread inspired by Christophers question about 3d printer sliceing SW.

[John Thornton]

It's an Anilam 1100M conversion and the Z connection is a bit on the 
weak side.


JT


On 5/28/2017 8:36 PM, Gene Heskett wrote:

On Sunday 28 May 2017 21:07:15 John Thornton wrote:


Hi Gene,

The Z axis ball screw attachment is a bit weak and is not very
consistent. It attaches to the quill with a 1/4" screw and another one
a bit bigger. And the X ways have a bit of wear so the saddle dips a
bit in the middle.

JT


Ahh, I was geting my exercise by jumping to the conclusion you were
referring to the knee drive.

Wouldn't be the first time. :)

As for the quill drive, I think I'd make a clamp collar to grab the
bottom 1/4" of the cylinder of the quill, and plant the ball screws
bottom in that. I'd have to see & feel the table ways though. I'd assume
you've tweaked the x gibs already.  It could be slack in the y gibs
allowing the table to go off balance, pivoting up on one edge or the
other of the y saddle on the knee.  That could mimic wear in the center
of the x table.  I'd sure put a dial on it and do some wrestling.
Sometimes what you feel, and what the dial tells you are different
things.

OTOH, I am probably carrying coal to Newcastle since I've no experience
with a bridgeport.


On 5/28/2017 10:25 AM, Gene Heskett wrote:

On Sunday 28 May 2017 08:20:24 John Thornton wrote:

I wish the BP knee mill Z was good enough to 3D print I'd give it a
try... I just need to get on with making the CoreXY printer.

JT

Whats the problem with it John?


Cheers, Gene Heskett



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Re: [Emc-users] new thread inspired by Christophers question about 3d printer sliceing SW.

[John Thornton]

Hi Gene,

The Z axis ball screw attachment is a bit weak and is not very 
consistent. It attaches to the quill with a 1/4" screw and another one a 
bit bigger. And the X ways have a bit of wear so the saddle dips a bit 
in the middle.


JT


On 5/28/2017 10:25 AM, Gene Heskett wrote:

On Sunday 28 May 2017 08:20:24 John Thornton wrote:


I wish the BP knee mill Z was good enough to 3D print I'd give it a
try... I just need to get on with making the CoreXY printer.

JT


Whats the problem with it John?

With the weight its carrying, I wouldn't think dropping 10 thou to put
down the next layer would be a problem, even with an acme screw in it.
All that should mean is that you'd need a 4x bigger stepper to lift it.
This is much the same problem as I had in a scaled down size, with
lifting the head on the g0704. It turned out that whoever suggested I
replace the 1600 oz-in nema 34 with a 950 oz-in nema 34 was quite
correct. The low current, very high inductance 1600 quickly ran out of
torque going up, so about 27 ipm was the best it could do. Replacing it
with a 960 oz-in 8 wire, and its driver and power supply with an
integrated driver/$upply, and it can now do 70 ipm up the tower.
And it runs 50F cooler doing it.

So, since I had them, that motor and driver are on the Z screw of the
Sheldon, where it can do even with some geardown in the timing belt,
something it the 65 ipm range. But I am not impressed with the dm860
driver, its step to step size is plumb doofy, one step in the 8 its set
for cannot be heard or felt, and now that the stuff inside the lid of
the power electronics box will be gone, I'll have room for a taller
auto-tech k6080 to replace it, 6 amps at 80 volts. I've around 65 volts
to bang it around with, and I'll bet the improved smoothness will let it
do 90 ipm.  Now if I could do the same with the 8 wire, parallel
configured nema 24 on the X screw, I'd be happy. Thats a small, unk
pitch 8mm screw of unk make, and its out of steam and may stall with a
2/1 geardown, at 37 ipm.  Same screw is on TLM's x, direct drive, does a
g76 retract fast enough I can cut threads at 400+ rpms. But on the
Sheldon, which will be turning slower most of the time, I traded speed
for holding, or being able to program any taper I want by having enough
twist to move it under cutting loading.


On 5/27/2017 8:54 PM, andy pugh wrote:

On 16 May 2017 at 14:27, Gene Heskett  wrote:

Has anyone put a printhead on a std moving table milling machine,
and used it to do some 3d additive printing?

https://www.youtube.com/watch?v=NEyL6cVWlo4

So, it clearly can work.

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Cheers, Gene Heskett



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Re: [Emc-users] new thread inspired by Christophers question about 3d printer sliceing SW.

[John Thornton]

I wish the BP knee mill Z was good enough to 3D print I'd give it a 
try... I just need to get on with making the CoreXY printer.


JT


On 5/27/2017 8:54 PM, andy pugh wrote:

On 16 May 2017 at 14:27, Gene Heskett  wrote:

Has anyone put a printhead on a std moving table milling machine, and
used it to do some 3d additive printing?


https://www.youtube.com/watch?v=NEyL6cVWlo4

So, it clearly can work.




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Re: [Emc-users] new thread inspired by Christophers question about 3d printer sliceing SW. (Gene Heskett)

[John Thornton]

That's a good idea if your mill can't reach the speeds needed. Of course 
it costs nothing to test just run a stl file through a slicer and remove 
all the M codes and see if it can keep up. Z is super slow so that's not 
a problem.

JT


On 5/17/2017 11:01 AM, richsh...@comcast.net wrote:
> You might consider building a lightweight sub-table and just move that.
>
>
>


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Re: [Emc-users] new thread inspired by Christophers question about 3d printer sliceing SW.

[John Thornton]

You can print without a heated bed and you can just slice a stl file and 
remove all the M codes and run it on your mill and watch the velocity, 
if it is constant I'd say you can print.

JT


On 5/16/2017 8:27 AM, Gene Heskett wrote:
> Greetings all;
>
> And the next logical question from me is:
>
> Has anyone put a printhead on a std moving table milling machine, and
> used it to do some 3d additive printing?  I am "out of room" for more
> machines, and that seems like a possible to do project. Doing it well
> would remain to be seen.
>
> The printhead seems like the lessor of two aspects, as a heated bed that
> big seems to be the bigger problem.
>
> Discussion?
>
> Cheers, Gene Heskett


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Re: [Emc-users] Anyone done an ATC?

[John Thornton]

My CHNC turret is controlled by Classicladder.

http://gnipsel.com/shop/hardinge/hardinge.xhtml

JT


On 5/9/2017 3:17 PM, dan...@austin.rr.com wrote:
> I'm hoping to do an ATC router (primarily wood) next.  Does anyone have 
> experience doing that with LinuxCNC?
>
> I do see some $2000 spindle options.  Any recommendations?
>
> Thanks,
> Danny
>
>
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Re: [Emc-users] HAL - Delay before machine power

[John Thornton]

http://linuxcnc.org/docs/2.7/html/hal/basic-hal.html#_addf

JT


On 5/9/2017 3:41 AM, David Berndt wrote:
> how order of all things in HAL is determined.


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Re: [Emc-users] Forum down?

[John Thornton]

Try again Gene, I think I fixed your account.

JT


On 5/9/2017 8:55 AM, Gene Heskett wrote:
> On Tuesday 09 May 2017 08:24:20 Sebastian Kuzminsky wrote:
>
>> It's up from here.
> Yup, but I can't sign up, then login, says my username is my email
> address.  So plz nuke anything associated with ghesk...@shentel.net or
> gene1934, and I'll try again.
>
> Initially the first thing it wanted was my email addy, and then claimed
> it was invalid. Its not. It also claims to have sent me an email, which
> has not arrived. Something all aglay someplace.  Blow it away & I'll try
> signing up again when thats been done.
>
> Thanks.
>> http://isup.me/forum.linuxcnc.org
>>
>> On May 9, 2017 1:49:45 AM MDT, "Bengt Sjölund" 
> wrote:
>>> And down again!
>>>
>>> What is it with the forum that goes down very often?
>>>
>>> Cheers
>>> Bengt
>>>
>>> Den 2017-04-30 kl. 19:58, skrev Jon Elson:
 On 04/29/2017 04:26 PM, Jon Elson wrote:
 And, it seems to be back up!

 Thanks,

 Jon
>>> -
>>> -
>>>
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 Emc-users mailing list
 Emc-users@lists.sourceforge.net
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>>> - Check out the vibrant tech community on one of the world's
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>
> Cheers, Gene Heskett


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Re: [Emc-users] Forum down?

[John Thornton]

I had to power cycle it this morning around 5am central time.

JT


On 5/9/2017 7:24 AM, Sebastian Kuzminsky wrote:
> It's up from here.
>
> http://isup.me/forum.linuxcnc.org
>
>
> On May 9, 2017 1:49:45 AM MDT, "Bengt Sjölund"  wrote:
>> And down again!
>>
>> What is it with the forum that goes down very often?
>>
>> Cheers
>> Bengt
>>
>>
>> Den 2017-04-30 kl. 19:58, skrev Jon Elson:
>>> On 04/29/2017 04:26 PM, Jon Elson wrote:
>>> And, it seems to be back up!
>>>
>>> Thanks,
>>>
>>> Jon
>>>
>>>
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Re: [Emc-users] touch screen calibration assistance please

[John Thornton]

And I know the same thing, I made a script to load the file after testing...

JT


On 5/2/2017 1:39 PM, andy pugh wrote:
> It is possible to calibrate the screen iteratively by changing the
> numbers by hand. Don't ask me how I know.


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Re: [Emc-users] Back to the non-functioning multilabel, section 6.4 in the docs

[John Thornton]

Chris,

Thanks, I'll fix that in the docs.

JT


On 4/23/2017 6:08 PM, Chris Morley wrote:
>
>
> ____
> From: John Thornton 
> Sent: April 23, 2017 12:35 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Back to the non-functioning multilabel, section 6.4 
> in the docs
>
> Hi Gene,
>
> The docs had a bad example... I've fixed it.
>
> JT
>
> One problem there, is it's supposed to be 'disable_pin' not 'disable'.
> Also there needs to be commas between the labels.
>
> 
>  ["Label1", "Label2", "Label3", "Label4", "Label5", 
> "Label6"]
>  ("Helvetica",20)
>  False
> 
>
> Too bad the error message leaves you no clue that is the problem [😊]
>
> Chris M
>
>
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Re: [Emc-users] Back to the non-functioning multilabel, section 6.4 in the docs

[John Thornton]

Hi Gene,

The docs had a bad example... I've fixed it.

JT

On 4/22/2017 9:19 PM, Gene Heskett wrote:
> On Saturday 22 April 2017 19:41:46 John Thornton wrote:
>
>> AFAIK the multi_function label works, got a sample of your code?
>>
>> JT
>>
> Hi John;
>
> Take a look at
>   
> <http://geneslinuxbox.net:6309/gene/lathe-stf/Sheldon_lathe-pix/pyvcp-panel-test-multilabel.xml>
>
> Then tell me how dumb I am and how to fix it. :)
>
> Cheers, Gene Heskett


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Re: [Emc-users] mutl_label

[John Thornton]

Hi Gene,

The problem seems to be with  False and what a 
strange error that returns lol, I think that is only for other widgets 
not for the multi_label.

panel.xml





["Label1","Label2","Label3"]
("Helvetica",20)



["one","two","three"]
"my-radio"
0



postgui.hal
# Include your customized HAL commands here
# The commands in this file are run after the AXIS GUI (including PyVCP 
panel) starts

sets spindle-at-speed true

net lbl-1 pyvcp.my-radio.one => pyvcp.multilabel.0.legend0
net lbl-2 pyvcp.my-radio.two => pyvcp.multilabel.0.legend1
net lbl-3 pyvcp.my-radio.three => pyvcp.multilabel.0.legend2

JT

On 4/22/2017 7:40 PM, Gene Heskett wrote:
> Hi John;
>
> Not atm. Straight out of the sample in section 6.4, with the label count
> trimmed to 2 quoted strings, it only generates a single pyvcp.label0,
> which without a net connection is stuck true and displays both quoted
> labels merged into one string.
>
> I an assuming the strings "string1" "string2" are just the labels to be
> displayed when the match halpin is true and can be anything printable.
>
> Lemme add it back into the .xml and see if I can figure it out again.
> Here is what 6.4 says:
> 
>  ["Label1" "Label2" "Label3" "Label4" "Label5" 
> "Label6"]
>  ("Helvetica",20)
>  False
> 
>
>


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Re: [Emc-users] Back to the non-functioning multilabel, section 6.4 in the docs

[John Thornton]

AFAIK the multi_function label works, got a sample of your code?

JT


On 4/22/2017 3:49 PM, Gene Heskett wrote:
> Greetings all;
>
> My question re that pyvcp module went by without acknowledging it, so
> I'll ask it in the form of: where can I find the src's for whats there,
> and I might go see if I can pin the tail on the donkey even if I am
> blind. :)  It does sound like a useful module, if it can be made to
> work.
>
> Thanks everybody.
>
> Cheers, Gene Heskett


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Re: [Emc-users] wiki, pyvcp section

[John Thornton]

If you upload a file to the wiki it is there till rapture...

JT


On 4/12/2017 11:40 AM, Gene Heskett wrote:
> Greetings all;
>
> Looking for ideas I could snarf, I went to the wiki and while the wiki is
> a decade old, all its links to pastebin have expired.  Pointing out the
> futility of using pastebin for long term storage.
>
> If whoever did those original wiki entries, and use pastebin links for
> the downloadable stuffs, might still have those .py and .xml files
> gathering mold & bitrot, could replace the pastebin links with something
> that will be valid until the rapture, it would be appreciated.  Perhaps
> the wiki software has its own facility for the links?
>
> I see one box in the big display at integrating pyVCP with AXIS
> (1jan2007) that would save some screen space if I can also insert a
> halpin to control its background color, 4th one down on the right side
> of that screenshot. At present I am using a label, and a number box,
> stacked vertically, and need to tally a 3rd piece of data for each axis
> of these jog wheels. If I can insert an additional halpin to control the
> color of the background to indicate status, I could do that w/o wasting
> more vertical space. But the descriptions of the boxes I am using do not
> indicate an ability to control the background color.
> This is what I have today, the bottom 4 boxes in the right panel.
>
> 
> as newer-sheldon-gui2.jpg
>
> This was generated by the 3 files: postgui_call_list.hal, postgui.hal,
> and pyvcp-panel-tach-status.xml, all available in the same directory.
>
> The whole maryann includes:
> 7i90-axis.ini
> hm2-7i90-stepper.hal
> automatic-spindle-gear-detection.hal
>
> This last I got from one of you, but since I've yet to restore the
> countershaft to driving the spindle, is not "fine tuned" and functional
> yet. I finished making the first set of bearing driver tools Monday but
> honeydo's & taxes & my back have discouraged me from tackling that just
> yet, and I've got to make a trip to the eats store before I can start
> today. Out of creamed cheese for Dee's breakfast bagel.
>
> I'll have to pull the bronze ones, then take the pusher back to TLM, and
> face the driver at an angle that puts all the push on the outer shell of
> the needle cartridge, on its flattened, labeled face, reducing the
> chances of bending that face with the push pressure. ATM its square for
> pushing on the bronze bearings.
>
> Code bits posted in case someone wants to borrow something. :) Be my
> guest.
>
> I don't consider that hm2-7i90-stepper.hal is complete as I'm considering
> replacing the timedelay module with a retriggerable so it stays active
> until 5 seconds after the last dial move. I am getting tired of it
> timing out while I was playing, or waiting for it to time out before I
> could do a touch-off as doing a touch off while its active does
> something odd and it moves when it shouldn't at the end of the timeout
> IIRC.
>
> Cheers, Gene Heskett


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Re: [Emc-users] 7i77 Field Power?

[John Thornton]

This should clear it up.

http://gnipsel.com/linuxcnc/configs/7i77.html

JT


On 4/7/2017 3:47 PM, Todd Zuercher wrote:
> I was going to start working on putting a tool touch probe on a machine with 
> a Mesa 7i77 setup.
> (I was just going to try a wire clipped to the tool and a touch plate for a 
> start.)
> I pulled out the multi-meter and started poking around to try to figure out 
> what exactly I wanted to do and noticed something odd. I checked the V+ to 
> ground and it read 0v and V- showed -12v.
> My field power is suppied by a simple 12v switching power supply (wall wart). 
> I don't see any obvious place where the 12v power is referenced to ground 
> (positive or negative.) Might this be normal? Would It cause a problem if I 
> tried to connect the V- to ground (such as short out the 12v power supply)? 
> Is this a symptom of another wiring problem somewhere (a short to ground 
> hidden somewhere.)
> Which side should I use for the spindle/tool wire clamp the field power or 
> the input pin? (the spindle does show a little resistance to ground)
> Should I put any resistors in line to help protect from short circuits?


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Re: [Emc-users] Cast Bracket for FHA-25 Harmonic Actuator.

[John Thornton]

I'm in the same boat as you and make machinery, I use SolidWorks but I 
stopped getting upgrades in 2015 due to declining business. I find that 
I can make parts and assemblies very fast in SW but I've not been able 
to do that well in Fusion 360 and I've not tried very hard as it is so 
different than SW. If you can save the files as some standard format you 
can open them in most 3D CAD programs.

JT


On 4/5/2017 8:20 AM, John Kasunich wrote:
>
> On Wed, Apr 5, 2017, at 05:02 AM, andy pugh wrote:
>> On 5 April 2017 at 03:29, Ralph Stirling  
>> wrote:
>>> I just wish there was an open source CAM tool of equal sophistication
>>> for CNC work...
>> Unfortunately Autodesk have rather taken the wind out of the sails of
>> the open-source CAD / CAM projects.
>> Fusion 360 (Windows and Mac only) is (at the moment) zero cost to
>> hobbyists and offers very good CAD and excellent CAM.
>>
>> I can't help expecting Autodesk to wait until everyone is committed to
>> their offering then "turning evil" and starting to charge.
>>
> I've been thinking the same thing...  I'm trying to decide what to do for my
> 3D CAD work.  I first got exposed to modern CAD when I was using Inventor
> at work.  Did some home projects using my work laptop and Inventor license,
> love the power of the tool.  But my work priorities have changed and I no
> longer have access to Inventor.  Which really drives home the problems of
> these tools.  The data is NOT portable.  I have a couple years of part-time
> hobby work that I simply can't recover.
>
> Solidworks seems to be the industry standard (something like 60% market
> share), but the pricing puts it just as far out of reach as Inventor or Pro-E.
> I actually bought a licence for Alibre a couple years ago for almost $1K, but
> I very quickly became unhappy with both the tool and the company (especially
> the company).  Not willing to invest further work into stuff that will be 
> trapped
> in their format.
>
>   That leaves Fusion 360 and FreeCAD.  I certainly like the philosophy behind
> FreeCAD.  Unfortunately, my projects are typically machinery, and I absolutely
> need to make assemblies from a mix of standard (screws, bearings, etc) and
> custom (housings, shafts, etc) parts.  Assemblies seem to be a distant after-
> thought for FreeCAD.  There have been several attempts at an "assembly
> workbench" for FreeCAD, and it looks like every one has died before becoming
> usable.  I think part of the problem might be that the core of FreeCAD was
> designed by people who were thinking only of part design instead of complete
> machine design.  I haven't had time to actually set up and use FreeCAD, if
> anyone can comment on how it handles assemblies I'd like to hear from you.
>
> Fusion 360 seems like a very nice tool...  but like Andy, I don't trust 
> Autodesk
> for a second.  My hobby projects move slowly - I need tools that are viable 
> over
> a timescale of a decade or more, (or data format that let me extract my work
> and move to another tool).  I just don't see that in the 3D world, from 
> anyone.
>


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Re: [Emc-users] Freeze Up Using Ubuntu 10.04?

[John Thornton]

Check that any fans are running ok and mb and cards are clean. I've had 
video card fans get dirty and stop working and freeze the pc as well as 
cpu fans that fail and when the cpu overheats it just shuts down.

JT


On 4/5/2017 9:30 AM, Todd Zuercher wrote:
> I still have (had) 2 machines running Linuxcnc on Ubuntu 10.04. One of which 
> seems to be locked into staying with it because of Hardware limitations (an 
> ISA interface card). In the past week one of those machines started freezing 
> up while running Linuxcnc. Fortunately it wasn't the machine that can't run 
> on Wheezy, so yesterday in frustration I installed the Wheezy ISO in a 
> separate partition and that seems to have stopped the problem. My other old 
> installation is still working happily. One of the main differences between 
> the two machines is the one that was acting up has a Gladevcp, and the one 
> that is still working has a Pyvcp. Where should I start looking for debugging 
> info, to help find what is going wrong on the one machine?
>


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Re: [Emc-users] Axis Title Bar?

[John Thornton]

The machine name is in the ini file.

JT


On 4/3/2017 11:24 AM, Todd Zuercher wrote:
> Where exactly is the text that is stuck in the title bare of the Axis window 
> harvested from? My window shows the "ngc filename" - Axis (ver#) on ...
> Specifically where does the on ... come from? What is shown on one of my 
> machines is very wrong for me. I may have modified an existing config from 
> another one of my machines, and it shows the name of that other machine 
> there, but I can't figure out where it is coming from.


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Re: [Emc-users] Documentaion Question / Addition

[John Thornton]

I would comment them out and test, I tested the first two... and yes the 
StepConf maintainer should remove ini items that are not used. You 
should start a issue on this, the issue tracker is the correct place to 
report things like this.

https://github.com/LinuxCNC/linuxcnc/issues

JT


On 3/30/2017 3:08 PM, Joe Hildreth wrote:
> John,
>
> These entries were generated with stepconf, should stepconf be updated so as 
> not to include them.  Also, just to verify, all three variable can be removed 
> from these two sections?
>
> [EMCMOT] section
> COMM_TIMEOUT = 1.0
> COMM_WAIT = 0.010
>
> [TRAJ] section
> CYCLE_TIME = 0.010
>
>
> Joe Hildreth
>
> - On Mar 30, 2017, at 2:32 PM, John Thornton j...@gnipsel.com wrote:
>
>> You can comment them out and LinuxCNC runs just fine, that tells me they
>> are leftover bit rot.
>>
>> JT
>>
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Re: [Emc-users] Documentaion Question / Addition

[John Thornton]

You can comment them out and LinuxCNC runs just fine, that tells me they 
are leftover bit rot.

JT


On 3/30/2017 2:07 PM, John Kasunich wrote:
> There was a time (in the late 1990's to early 2000's) when LinuxCNC (EMC back 
> then) had three realtime threads.  What we now know as the base and servo 
> threads, and a third slower thread for the trajectory planner.  Back in the 
> day, computers couldn't necessarily do all the trajectory planner (and 
> especially kinematics) math quick enough, so the planner ran at 1/10 the rate 
> and the output was interpolated at the servo rate.
>
> The third thread went away in 2004 or so when EMC2 rewrote much of the motion 
> controller.
>
> There is no mechanism for detecting unused ini file parameters, so it is 
> quite possible that no code has actually used the parameters you mention in 
> more than a decade.
>
> I'm not in a position to do it, but I wonder how hard it would be to grep 
> thru the code to see if those parameters are used?  If they're not, they 
> should be deleted from the sample configs.
>
> John Kasunich
>
>
> On Wed, Mar 29, 2017, at 05:34 PM, Joe Hildreth wrote:
>> It's me again ... :-)
>>
>> While in the [TRAJ] section of the INI file is see the variable CYCLE_TIME = 
>> 0.010, but is not mentioned in the INI config documents.  I am only guessing 
>> that this is the polling interval time for the trajectory planner but am not 
>> sure.  Can I add this to my list?
>>
>> Thanks again, sorry to be a pain.
>>
>> Joe Hildreth
>>
>> - On Mar 29, 2017, at 3:35 PM, Joe Hildreth j...@threerivershospital.com 
>> wrote:
>>
>>> Hello all,
>>>
>>> I am going through the INI file of my stepper based Gantry machine and am
>>> looking at the [EMCMOT] section. In this section I see two variables:
>>>
>>> COMM_TIMEOUT = 1.0
>>> COMM_WAIT = 0.010
>>>
>>> I am guessing they have something to do with the communication times, but 
>>> the
>>> INI Configuration section of the documentation does not mention these, and I
>>> see no reference to them in the core component motion section of the
>>> documentation.
>>>
>>> Can someone explain these to me and maybe add them to the INI config docs?
>>>
>>> Many thanks for your help, patience and time.
>>>
>>> Joe Hildreth
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Re: [Emc-users] Looking for advice on LinuxCNC Version

[John Thornton]

Once 2.8 is released I would switch to it _unless_ you need some feature 
in the new Master. This way you get bug fixes only and nothing that 
could be a show stopper... or a surprise.

JT


On 3/30/2017 11:45 AM, Joe Hildreth wrote:
> John,
>
> Thank you again for the help and information.  I will try this out when I get 
> home.  One last question, when 2.8 is released, is it a matter then of just 
> changing the software sources to be on that release or would it be best to 
> just keep on the buildbot sources?
>
> Thank you again for your help.
>
> Regards,
>
> Joe Hildreth
>
> - On Mar 30, 2017, at 11:35 AM, John Thornton j...@gnipsel.com wrote:
>
>> Hi Joe,
>>
>> http://buildbot.linuxcnc.org/
>>
>> You just need to change the deb line in the synaptic package manager to
>> point to:
>>
>> deb http://buildbot.linuxcnc.org/ precise master-rtpreempt
>> and
>> deb-src http://buildbot.linuxcnc.org/ precise master-rtpreempt
>>
>> and follow the instructions to add the key.
>> JT
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Re: [Emc-users] Looking for advice on LinuxCNC Version

[John Thornton]

Hi Joe,

http://buildbot.linuxcnc.org/

You just need to change the deb line in the synaptic package manager to 
point to:

deb http://buildbot.linuxcnc.org/ precise master-rtpreempt
and
deb-src http://buildbot.linuxcnc.org/ precise master-rtpreempt

and follow the instructions to add the key.
JT

On 3/30/2017 11:21 AM, Joe Hildreth wrote:
> John,
>
> Thank you for the information.  Todd mentioned that I could run the 2.8-pre 
> version, but I am unsure how to get it to my wheezy box.  Are there software 
> sources I need to point to to do this, or something else.  I would be happy 
> with a link to some instructions.
>
> Also, is there a time line for the 2.8 release?  Should I just wait?
>
> Regards,
>
> Joe Hildreth
>
> - On Mar 30, 2017, at 11:13 AM, John Thornton j...@gnipsel.com wrote:
>
>> The gantry component was a work around for 2.7. The JA branch has been
>> merged into Master for some time now. Master is the development branch
>> and when 2.8 is released it will contain most if not all of the things
>> currently in master.
>>
>> JT
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Re: [Emc-users] Looking for advice on LinuxCNC Version

[John Thornton]

The gantry component was a work around for 2.7. The JA branch has been 
merged into Master for some time now. Master is the development branch 
and when 2.8 is released it will contain most if not all of the things 
currently in master.

JT


On 3/30/2017 10:40 AM, Joe Hildreth wrote:
> Hello all,
>
> I built a gantry type router a year or so ago and was more interested in 
> getting it running than anything else. My gantry runs along the Y axis and 
> has 2 motors (joints). I am running the Axis GUI on LinuxCNC 2.6.x.
>
> My current setup has the ystep and ydir signals driving two motors. Slaved 
> together is maybe the word I am looking for. See HAL snippet:
>
> net ystep => parport.0.pin-04-out
> net ydir => parport.0.pin-05-out
> net ystep => parport.0.pin-06-out
> net ydir => parport.0.pin-07-out
>
> I have cut loads of stuff with the machine and feel like I am at a point I 
> want to make it better. Up to now, I would bump the gantry against a hard 
> stop to square it and home the axes by hand. I want to add homing switches 
> which brings me to my first observations.
>
> 1) I know that the 2.7 version of LinuxCNC has the gantry component and I 
> have looked at a couple of configurations on how that it set up, so I believe 
> the gantry joints can be homed independently and squared by adjusting how far 
> the joint is moved off the switch.
>
> 2) I have seen a couple of post from BigJohnT were he recommends using the 
> 2.8 pre version (JA14 branch) as trivkins now handles an axis with multiple 
> joints. I have found a little information on this but may be able to muddle 
> my way through configuration.
>
> So, my questions are:
>
> 1) If I am going to go through all the work of setting this up, which would 
> be the recommended version? 2.7 with the gantry component, or the JA14 using 
> trivkins?
>
> 2) If the JA14 branch is the recommended version to use, how do I get it 
> installed? My controller computer was installed using the Debian Wheezy 
> hybrid ISO.
>
> 3) Will the JA14 branch eventually be released as version 2.8? If I use the 
> JA14 branch and it is released as 2.8, how does that affect me? Does it 
> auto-magically become 2.8 or am I still on a developmental branch? If not, 
> how do I switch back over to the 2.8 stable release after it comes out.
>
> If you have references you would recommend for reading, I will be happy to 
> read them. Or other advice. I know you guys get a lot of gantry homing 
> question stuff and I hope I am not being too much of a pain.
>
> Thank you for your advice,
>
> Joe Hildreth
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Re: [Emc-users] Milling setup question

[John Thornton]

When you bore the hole can you machine some flats on either side as a 
reference?

JT

On 3/30/2017 6:02 AM, andy pugh wrote:
> If you have a part with a large bore through the middle, how do you
> set up to machine a hole exactly perpendicular to the axis of that
> bore?
>
> I imagine that this is quite a common problem, so must have a common solution?
>
> My particular setup puzzle is analagous to this, except that I will be
> using the horizontal spindle.
>
> Machining this casting: https://goo.gl/photos/6QhNnqjzRuSJJpva7
>
> The order of operations will be, starting with the raw casting:
> 1) with the large flat face clamped down to the table machine the base flat.
> 2) Now clamp the base to the table, face off the large flat face and
> machine the large bore.
> 3) Return to the original setup and machine a key-slot in the base
> _exactly_ on the axis of the large bore.
>
> 3) is the problem. I can indicate the base to make sure that is
> perpendicular to the spindle axis, but how do I make sure that the
> bore axis and the spindle axis intersect?
>


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Re: [Emc-users] Version 2.7 positioning problem during cnc operations

[John Thornton]

That will be overridden by the G code program so not a safe thing to do.

JT


On 3/29/2017 1:54 PM, Tomas J wrote:
>> Currently the fix is adding G64Px.xxx at the beginning of all programs.
> Or add "RS274NGC_STARTUP_CODE = G64 P0.02" to [RS274NGC] section of .ini
> file...
>


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Re: [Emc-users] 3D Printers

[John Thornton]

xxcoder and I have one of these which goes on sale tomorrow for $196

https://www.aliexpress.com/item/Full-Metal-Frame-3D-Printer-Professional-3d-Color-Printer-with-8GB-SD-Card-LCD-One-Roll/32705186296.html

It does need a bit of TLC in some areas but seems to print OK. It is a 
Prusa i3 clone. I did replace the extruder with a nicer one. The bowden 
tube works OK but I understand the extruder connected to the hot end is 
a better arraignment.

The one you linked looks better than the Prusa i3 clone I have.

JT


On 3/28/2017 9:48 AM, andy pugh wrote:
> I find myself astonished that I don't have a 3D printer.
> I am thinking of buying one.
> Longer-term I think I will end up making a large-format delta pritner,
> so the one I buy will be more ot a toe-dipping exercise, and I am
> looking at:
> http://www.ebay.co.uk/itm/182454763977
> Any thoughts?
>


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Re: [Emc-users] jogging again

[John Thornton]

The encoder.N.x4-mode is still in master but it's for the software 
encoder...

JT


On 3/14/2017 12:50 PM, Gene Heskett wrote:
> On Tuesday 14 March 2017 11:26:41 John Kasunich wrote:
>
>> On Tue, Mar 14, 2017, at 10:56 AM, Gene Heskett wrote:
>>> Greetings all;
>>>
>>> I threw out quite a few lines of code, but while its now working,
>>> its working at 4x the movement I am asking it for.
>>>
>>> I am now sending my distance increment to the axis.x.scale and
>>> joint.0.scale inputs.
>>>
>>> and sending the hm2...encoder.count to axis.x.counts and
>>> joint.0.counts
>>>
>>> It seems that regardless of what I
>>> setp hm2_[HOSTMOT2](BOARD).0.encoder.01.scale at,from 1 to 16
>>> tested, one click is a count of 4 at the count output. So I am
>>> getting 4x the movement I want.  So sending a .0002", gets me .0008"
>>> rad change and .0016" dia change.
>>>
>>> Is there a fix for this unwanted 4 per click?  Or am I getting a 4x
>>> multiplier because I am feeding both axis and joint the encoder
>>> count?
>>>
>>> Thanks all;
>>>
>>> Cheers, Gene Heskett
>>> --
>> The jog scale inputs are "distance you want to travel per jogwheel
>> count".
>>
>> Your wheel sends four counts for one detent.
>>
>> If you want one detent to be 0.001" set jog-scale to 1/4 of that,
>> 0.00025".
>>
>> If you want one detent to be 0.010", set jog-scale to 0.0025".
>>
>> And so on...
>>
>> hm2_[HOSTMOT2](BOARD).0.encoder.01.scale has nothing to do with it.
>> That is used INSIDE the encoder driver to scale the floating point
>> output of the encoder. Wheel jogging doesn't use the floating point
>> output of the encoder, it uses the raw counts.
>>
>> The reason for that is so that you can change the jog-scale any time
>> you want.
> I can do that, but the real fix has apparently been removed in the
> 2.8-pre branch. What I needed, and the manpage says its there on this
> machine, and in the manpage out there, and that was the
> encoder.L.x4-mode.
>
> I can put a mul2 in with one input setp to .25, but why was the x4-mode
> removed AND left at the default of counting every edge, which obviously
> gives an output of 4 for one click. Thats simpler and I'll try that
> first, but...
>
> I have another problem too, halshow now cannot see anything from
> hostmot2! To me thats a genuine bug.  ISTR it worked a week ago. Version
> now on the pi is 2.8.0-pre1-2771-gdc2ff49, fresh last night.
>
> I just tried the counter-mode FALSE so it only counts the rising edge of
> phase a. But as I suspected, it very quickly looses track of where it is
> on the dials reversal. Gr.  I may have a better idea. Ignore the
> encoders count output entirely. I am already developing a click(x|z)
> signal that is only true when both phases of the encoders input are
> true, and a direction derived from its velocity output. I'll take the
> steered up and down count pulses from that and feed them to another
> updown, and use its output to drive the jog-counts inputs to motion.
> Thats also one count per click, but its presumably at the peak of the
> area between detents, and need not be clamped since it will be zerored
> when the timer times out, disabling the jogwheel entirely. At that
> point, the direction outputs I am using should be accurate. But I expect
> I'd better start nearly from square one and rewrite 95% of it.
>
> Cheers, Gene Heskett


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Re: [Emc-users] Example configuration for THC + stepper

[John Thornton]

I've never used gmoccapy... the gmoccapy section on the forum is quite 
active.

JT


On 3/13/2017 10:53 AM, Alexander Brock wrote:
> On 03/13/2017 03:49 PM, John Thornton wrote:
>> It really has nothing to do with the GUI, it's something you add to your
>> hal file. I just use a setp to enable it when I start my GUI ( I used to
>> use a check box but would forget to check it lol).
> How can I create a configuration which provides the nice gmoccapy-plasma
> gui, runs my steppers using the parport and uses thcud for THC?
>
> Best Regards,
> Alexander
>
>
>
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Re: [Emc-users] Example configuration for THC + stepper

[John Thornton]

It really has nothing to do with the GUI, it's something you add to your 
hal file. I just use a setp to enable it when I start my GUI ( I used to 
use a check box but would forget to check it lol).

JT


On 3/13/2017 7:09 AM, Alexander Brock wrote:
> On 03/12/2017 11:46 PM, John Thornton wrote:
>> Are you using the thcud component?
> Do you mean this?
> http://linuxcnc.org/docs/html/man/man9/thcud.9.html
>
> I'm not using it at the moment but it seems this provides what I need /
> want. Would you suggest to
> a) integrate it in the gmoccapy-plasma config shipped with linuxcnc
> b) integrate it into a "mill" configuration generated with stepconf
> c) something else?
>
> Best Regards,
> Alexander
>
>
>
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Re: [Emc-users] Example configuration for THC + stepper

[John Thornton]

Are you using the thcud component?

JT


On 3/12/2017 10:52 AM, Alexander Brock wrote:
> Hi,
>
> I built a XYZ router and attached a plasma cutter to it with a THC
> module which gives me "Arc ok", "up" and "down" signals.
> I figured out how to use Stepconf to move the stepper motors but I can't
> get the THC part to work.
>
> Does someone have a similar / example configuration? I saw that there is
> a example for simulating plasma operation in
> "configs/sim/gmoccapy/gmoccapy_plasma", but I don't understand how I
> need to modify it so it moves my steppers and actually uses my plasma
> cutter.
>
> Is it better / easier to modify the gmoccapy_plasma so it actually does
> something or should I try to modify the mill configuration which does
> already move the steppers?
>
> Best Regards,
> Alexander
>
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[Emc-users] 7i44

[John Thornton]

Can anyone in the UK use a 7i44?

Thanks
JT


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Re: [Emc-users] damn radio shack

[John Thornton]

You can get 22mm push buttons from Automation Direct

https://www.automationdirect.com/adc/Shopping/Catalog/Pushbuttons_-z-_Switches_-z-_Indicators

JT


On 3/7/2017 3:55 AM, Gene Heskett wrote:
> On Tuesday 07 March 2017 04:28:48 andy pugh wrote:
>
>> On 7 March 2017 at 00:54, Gene Heskett  wrote:
>>> Surely you aren't paying those
>>> prices on your side of the pond?
>> No, I source the switches first and make panel cutouts to suit.
>>
>> You can try an eBay search for "MAME" to find lots of cheap buttons:
>> http://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313
>> .TR12.TRC2.A0.H0.Xmame+buttons.TRS0&_nkw=mame+buttons&_sacat=0
> And all are 2x the diameter I have clear, 30mm or 1&1/4". I'll look some
> more when I have both eyes open at the same time.  Its 5am here.
>
> Cheers, Gene Heskett


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Re: [Emc-users] I am gonna need more wire.

[John Thornton]

Some paint screws...

JT


On 3/5/2017 6:19 PM, Gene Heskett wrote:
> On Sunday 05 March 2017 18:06:59 andy pugh wrote:
>
>> On 5 March 2017 at 22:21, Gene Heskett  wrote:
>>> . I'd picked up two rattle guns
>>> of higher temp stuff,
>> Can I repeat my opinion that brush-painting is more effective for
>> machine parts?
> You may Andy, but how to you plug up the screw holes so you can put the
> screws back in.  Brushes have this nasty habit of plugging the threaded
> hole full of paint.
>
> Cheers, Gene Heskett


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Re: [Emc-users] Need pyvcp-xml expert

[John Thornton]

Not for me. I assume Gene just commented them both out when the first 
one tossed an error at him.

JT


On 3/2/2017 7:36 AM, TJoseph Powderly wrote:
> is there still an error on 2nd commented line?
> tomp
>
>
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Re: [Emc-users] Need pyvcp-xml expert

[John Thornton]

Hevetica works fine on Linux Mint 17.3...

JT


On 3/2/2017 7:10 AM, dragon wrote:
> It might be because Helvetica is a long since gone font that I doubt is
> installed on your system. I have worked with another open source
> software project that has a bunch of legacy helvetica font selection
> hard coded into the C++. Boy that's a pain.
>
> Just pick a different font that you know is installed and see if that helps.
>
> On 03/02/2017 04:26 AM, Gene Heskett wrote:
>> Greetings all;
>>
>> For some reason I cannot grok, I must comment out the two lines isolated
>> with xml comment strings in this xml code:
>>
>> 
>>
>>  
>>
>>  "X-Jog size"
>>  
>>
>>
>>  "raised"
>>  2
>>  23
>>  "X-Jog"
>>  ("Helvetica",18)
>>  ".4f"
>>
>>  
>>  
>>
>>  "Z-Jog size"
>>  
>>
>>
>>  "raised"
>>  2
>>  23
>>  "Z-Jog"
>>  ("Helvetica",18)
>>  ".4f"
>>
>>  
>>
>>
>> Its a text holder box, why can't I specify the font.  Without it, I think
>> its using some other stick font at about size 10.  That exact same
>> syntax works in the "number" box. Why not in a label box?
>>
>> Thanks all. I'm going back to bed, need some zz's.
>>
>> Cheers, Gene Heskett
>>
>
>
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Re: [Emc-users] Need pyvcp-xml expert

[John Thornton]

Because you were tired and forgot the closing )
("Helvetica",12 < brokey
("Helvetica",12)  Greetings all;
>
> For some reason I cannot grok, I must comment out the two lines isolated
> with xml comment strings in this xml code:
>
> 
>
>  
>
>  "X-Jog size"
>  
>
>
>  "raised"
>  2
>  23
>  "X-Jog"
>  ("Helvetica",18)
>  ".4f"
>
>  
>  
>
>   "Z-Jog size"
>  
>
>
>  "raised"
>  2
>  23
>  "Z-Jog"
>  ("Helvetica",18)
>  ".4f"
>
>  
>
>
> Its a text holder box, why can't I specify the font.  Without it, I think
> its using some other stick font at about size 10.  That exact same
> syntax works in the "number" box. Why not in a label box?
>
> Thanks all. I'm going back to bed, need some zz's.
>
> Cheers, Gene Heskett


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Re: [Emc-users] MPG detents

[John Thornton]

I've learned to use the spinny knob on the BP Discovery 308 but at first 
missed the detent...

JT


On 3/1/2017 10:57 AM, Roland Jollivet wrote:
> I thought that if 100 detents and 1tick/detent was all that was needed,
> then it would be simple to make. 400 ticks/rev is still do-able, but
> anything above that means a purchased encoder, and then the incentive is
> lost.
>
> I think the detent is invaluable where any overshoot will crash the tool.
>
>
>
>
> On 1 March 2017 at 18:31, Chris Albertson  wrote:
>
>> I think when you design one of these you have freedom to define the
>> mechanical detents per revolution and the number of encoder "ticks" per
>> revolution independently.   You are arguing for these numbers to always be
>> the same.  But why?   Why not 10 ticks per detent?   I think with a jog
>> wheel the higher the ratio the better.Four is better than one.  On the
>> one to one case it is likely the machine (milling table) will jump in steps
>> as fast as the motors can move then stop at each detent.   In the 10 to one
>> case the table would move only as fast as you turn the dial between
>> detents.
>>
>> I'm wondering why there are detents.   I don't see much reason for having
>> "clicks" in the wheel.My preference would be to design the wheel using
>> "damping grease" so I'd have a wheel then turns smoothly with bit of
>> friction that stays put when you release it.  And to have the encoder be as
>> fine as possible, Maybe even optical with 4096 "ticks" per revolution so it
>> would have an analog feel.In this case that ratio would be 4096/0 or
>> infinity ticks per detent.  MUCH higher then four or ten.
>>
>>
>>
>> On Wed, Mar 1, 2017 at 4:42 AM, Roland Jollivet > wrote:
>>
>>> I had always assumed that machine MPG's generated one state change per
>>> click, but following Gene's discussion, I pulled out my 1988 Fanuc MPG,
>> and
>>> saw that it was also 4-states per click. Obviously, one 'pulse'/detent
>>>
>>> Does anyone know the rationale behind this?
>>> I assumed one always wants one step per click, so why not use a 25ppr
>>> encoder and use every change?
>>> Used as currently is, it would have to be a software /4 to be useful. You
>>> could also do a /2 or /1, but no-one ever wants a x2 or x4 on their MPG
>>> It's always x10, x100 or whatever, so the count/detent would always have
>> to
>>> be n/4 x 1   .. or..  n/4 x10 in software.
>>>
>>> Alternatively, if I was going to make my own MPG, surely I would just
>> make
>>> a 25ppr encoder and make it 1 detent/change?
>>> It's far easier for me to make, so surely it would have been for Fanuc
>> too?
>>> What am I missing?
>>>
>>> Regards
>>> Roland
>>> 
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>>
>>
>> --
>>
>> Chris Albertson
>> Redondo Beach, California
>> 
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Re: [Emc-users] [was]multiswitch Q's, now encoder

[John Thornton]

Anytime and I know what it means to get up out of my chair and walk to 
the garage to get/do something and when I get there I've not a clue why 
I'm there... usually it comes back to me at some point. My Dad suffered 
from dementia the last few years he was here and hated not being in full 
control but never gave up and took care of himself right up to the end 
using little tricks like sticky notes all over the place.

I've never gotten a round-tuit to try and keep the pdf up to date with 
the man pages :) and I actually prefer the html documents now but used 
to prefer the pdf. Did you know you can build a local copy of the html 
with ./configure --enable-documentation=html

JT


On 2/28/2017 3:53 PM, Gene Heskett wrote:
> On Tuesday 28 February 2017 15:44:48 John Thornton wrote:
>
>> Gene you might be looking at threads not motion...
>>
>> http://linuxcnc.org/docs/2.7/html/man/man9/threads.9.html
>>
>> http://linuxcnc.org/docs/2.7/html/man/man9/motion.9.html
>>
>> JT
> I think you've hit it John. I recall reading about that via its man page,
> and had since forgotten it, having reached that age where I can't always
> recall what I had for breakfast, or even if I had breakfast since thats
> not an everyday occurrence, governed by the morning glucose reading.
>
> Not in the big pdf, except a very terse description, but it does have a
> manpage, from which I extracted this:
>
> loadrt threads name1=name period1=period [fp1=<0|1>] []
> []
>
> And I am assuming the fp1 tells it floating point or not.  And that
> worked, I now have a 10ms thread running for this slower stuff driven by
> human hands.
>
> Thanks John.
>
>
>
> Cheers, Gene Heskett


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Re: [Emc-users] [was]multiswitch Q's, now encoder

[John Thornton]

Gene you might be looking at threads not motion...

http://linuxcnc.org/docs/2.7/html/man/man9/threads.9.html

http://linuxcnc.org/docs/2.7/html/man/man9/motion.9.html

JT


On 2/28/2017 1:47 PM, Gene Heskett wrote:
> On Tuesday 28 February 2017 12:22:29 andy pugh wrote:
>
>> On 28 February 2017 at 16:53, Gene Heskett 
> wrote:
>>> Why?
>> Because motion creates threads called servo-thread  and base-thread,
>> and that is hard-coded.
> The docs do NOT claim that.
>
>> https://github.com/LinuxCNC/linuxcnc/blob/87d2a4e1f28427568a69abcab101
>> dec63d24bca3/src/emc/motion/motion.c#L816
>>
>> Why are you trying to jog in a separate thread to the servo thread?
> I see no good reason to recalculate the jog gain or loss every thousandth
> of a second, Andy, 1/100th second is plenty fast enough, given the rate
> at which it can be changed by turning the dial.  But 5 to 7 clicks will
> be the full range for this adjustment.
>
> The pi has limited resources, so why bother it with all this stuff any
> faster than 1/100th second.  None of this applies when the button beside
> the dial is not pushed, so its wasted cpu cycles, magnitudes of them, if
> it has to repeat the calculations every millisecond.
>
> I don't think I can move the BASE_PERIOD time to 1 millisecond, because
> many of those modules do have fp requirements which LCNC would no doutb
> object to, taking the exit cleanup path.
>
> So I guess this then is a feature request.  The docs even name
> TRAJ_PERIOD, see page 621 of the pdf.  Can it not be made to work at
> all?
>
> Thanks Andy.
>
> Cheers, Gene Heskett


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Re: [Emc-users] Those $20 80mm hand dials at MPJA.com

[John Thornton]

This is my BP MPG code using ilowpass

# MPG
setp hm2_5i25.0.encoder.05.counter-mode true
loadrt mux4 names=mpg-scale
addf mpg-scale servo-thread
loadrt ilowpass
addf ilowpass.0 servo-thread
loadrt or2 count=2
addf or2.0 servo-thread
addf or2.1 servo-thread

setp ilowpass.0.gain 0.02
setp ilowpass.0.scale 1000
setp mpg-scale.in0 0.0
setp mpg-scale.in1 -0.001
setp mpg-scale.in2 -0.01
setp mpg-scale.in3 -0.1

http://linuxcnc.org/docs/2.7/html/man/man9/ilowpass.9.html

JT


On 2/22/2017 7:39 AM, Gene Heskett wrote:
> Are in fact 60mm's in diameter, which as another poster said is near
> ideal. They must be some sort of a magnetic device internally as the
> detenting is done by the cogging of something magnetic with very little
> actual friction. Finer resolution and many times the quality of the
> Panasonic dials I've lifted from old editing controllers.  Well worth
> the sheckels IMO.
>
> Question, since I've yet to cable one up to test it, what with the wife
> here and needing more of my attention now, how does "motion" handle the
> accumulated cranking these can accumulate in their encoder modules when
> the machine is being homed/rehomed?
>
> I see there is not an index output but in this jog wheel service that
> should not be a problem.
>
> Cheers, Gene Heskett


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Re: [Emc-users] Milling Aluminum.

[John Thornton]

Jim,

Good to know this I have a pice of MIC-6 arriving today I need to cut up 
and machine it. I usually use 6061 and 7075.

JT


On 2/21/2017 11:37 AM, Jim Craig wrote:
> MIC-6 is particularly gummy when machining. I always use coolant and I
> still get a little bit of chip weld if things aren't just right.
>
> Getting the chips out of the slot you are milling is also critical. I
> would keep using the compressed air blast and i would probably use a HSM
> slot instead of a conventional slot to allow more room for chip
> evacuation. It will take more time but should provide better results. I
> get similar results to John for feeds and speeds. Use 1/8" DOC, 2 flute
> 24k rpm and 119 ipm feed gives .0024" chip and about 15-20 lbs of
> cutting force.
>
> Jim


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Re: [Emc-users] Milling Aluminum.

[John Thornton]

The key to milling aluminum dry is cutting a chip big enough to pull the 
heat out with the chip. So big chips mean the part stays cool, and small 
chips means the tool will gum up and stick the aluminum. I like 2 flute 
carbide from Lakeshore Carbide. They make end mills for steel and 
aluminum that have different coatings. Looking in the Lakeshore Carbide 
book they recommend for aluminum 1600-2000 SFM ( I assume that is with 
flood coolant) and 0.003" inches per tooth. Using my handy calculator 
and using 1600 SFM for a 2 flute 1/4" end mill I get 26 RPM at 146.7 
IPM.

JT


On 2/21/2017 9:34 AM, Todd Zuercher wrote:
> I am a wood worker in a large wood working CNC shop. But I need to mill some 
> aluminum for a project (a jig for another process in our company) but I know 
> next to nothing about milling such material. What I need is to cut a large 
> grid out of a 5ft x 10ft sheet of 1/4inch thick MIC6 AL. The machines I will 
> have to do this are large wood working cncs with flat vacuum tables. We 
> normally cut flat sheet material like MDF or plywood on a MDF fall-board 
> (vacuum sucking right through the fall-board (holes, no jig tape, just porous 
> MDF) These machines have no provisions for coolant Just compressed air blast 
> and dust/chip collection (big centralized dust collector system). I will 
> obviously have to disable the dust collection, because I'm pretty sure the 
> local farmers who pick up our dust won't appreciate AL shavings in their cow 
> bedding. The machine I am probably going to use has a 12kw 24krpm spindle. I 
> would like to mill this with a 1/4" 2 flute carbide end mill. Should I use an 
> up or down
  spiral cutter? What feed speed and RPM would be appropriate? What depth of 
cut per pass? Do I need to arrange some sort of mist system for cooling? What 
to use and how much liquid in the mist? (Don't want to cause problems with the 
MDF fall-board or vacuum hold down system.) The grid is only going to be about 
2 inches wide, with 12 windows in the 5x10 frame (a lot of wasted material). At 
this point the plan is to set the milling up with lots of bridges to hold the 
grid to the scrap then go back and trim those off with a final finish pass.
>



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Re: [Emc-users] Custom home sequence

[John Thornton]

Thanks for the explanation.

JT


On 2/20/2017 7:06 PM, Sebastian Kuzminsky wrote:
> On 02/20/2017 04:42 PM, Eric H. Johnson wrote:
>> Don't I only need to run down through the below to install rtai? Also,
>> isin't
>> sudo apt-get -y dist-upgrade
>> going to upgrade me from Xubuntu 12.04 to 14.04? I should skip that step,
>> right?
> "apt-get dist-upgrade" will upgrade all packages, but won't upgrade to a
> new distribution.  For example, if you run it on Precise it'll upgrade
> all installed packages to the latest versions available on Precise, but
> will *not* upgrade from Precise to some newer version of the
> distribution.  This is exactly what you want.
>
>
>> sudo apt-get update
>> sudo apt-get -y dist-upgrade
>> sudo apt-key adv --keyserver hkp://keys.gnupg.net --recv-key
>> 3cb9fd148f374fef
>> sudo add-apt-repository "deb http://linuxcnc.org/ precise base 2.7-rtai"
>> sudo apt-get update
>> sudo apt-get -y install linux-image-3.4-9-rtai-686-pae
>> rtai-modules-3.4-9-rtai-686-pae
>> sudo apt-get -y install linux-headers-3.4-9-rtai-686-pae
>> reboot and hold the left shift key down to get to the boot menu
>> select advanced options and pick the 3.4-9-rtai-686-pae kernel
>> uname -r
>> should report 3.4-9-rtai-686-pae
>> open the synaptic package manager and remove the generic image and headers
> This recipe looks right to me.  It's like the official docs here:
>
> http://linuxcnc.org/docs/2.7/html/getting-started/getting-linuxcnc.html#_installing_on_ubuntu_precise
>
>


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Re: [Emc-users] Custom home sequence

[John Thornton]

lol, I'm not sure what sudo apt-get -y dist-upgrade but it doesn't 
upgrade the OS.

JT

On 2/20/2017 5:42 PM, Eric H. Johnson wrote:
> John,
>
> Don't I only need to run down through the below to install rtai? Also,
> isin't
> sudo apt-get -y dist-upgrade
> going to upgrade me from Xubuntu 12.04 to 14.04? I should skip that step,
> right?
>
> sudo apt-get update
> sudo apt-get -y dist-upgrade
> sudo apt-key adv --keyserver hkp://keys.gnupg.net --recv-key
> 3cb9fd148f374fef
> sudo add-apt-repository "deb http://linuxcnc.org/ precise base 2.7-rtai"
> sudo apt-get update
> sudo apt-get -y install linux-image-3.4-9-rtai-686-pae
> rtai-modules-3.4-9-rtai-686-pae
> sudo apt-get -y install linux-headers-3.4-9-rtai-686-pae
> reboot and hold the left shift key down to get to the boot menu
> select advanced options and pick the 3.4-9-rtai-686-pae kernel
> uname -r
> should report 3.4-9-rtai-686-pae
> open the synaptic package manager and remove the generic image and headers
>
> I am trying to install to a production box, not a development environment. I
> run headless, and thus have used Xubuntu for its small footprint.
>
> Thanks,
> Eric
>
>
> Yes I do.
>
> JT
>
>
> On 2/20/2017 5:02 PM, Andrew wrote:
>> I remember that you had a similar .txt for preempt-rt on Mint, didn't you?
>>
>> 2017-02-21 0:51 GMT+02:00 John Thornton :
>>
>>> This is how I install rtai on Linux Mint 17.3
>>>
>>> JT
>>>
>>>
>>>
>>> On 2/20/2017 4:12 PM, Eric H. Johnson wrote:
>>>
>>>> I should add, I am using Xubuntu 12.04.
>>>>
>>>>
>>>>
>>>> Does rtai need to be installed separately to use these modules? I
>>>> believe apt-key ran properly and the linuxcnc repositories were added
> properly.
>>>> There were no errors with apt-get update.  I am getting errors of
>>>> the
>>>> form:
>>>>
>>>> The following packages have unmet dependencies:
>>>> Linuxcnc: Depends: linux-image-3.4-9-rtai-686-pae but it is not
>>>> installable.
>>>>Depends: rtai-modules-3.4-9-rtai-686-pae but
>>>> it is not installable ...
>>>>
>>>> Thanks
>>>>
>>>>
>>>> Developer (master) version does exactly what you need.
>>>> It also has sync homing. See
>>>> http://linuxcnc.org/docs/devel/html/config/ini-homing.html#_home_seq
>>>> uence
>>>>
>>>> You can install master branch from buildbot
>>>> http://buildbot.linuxcnc.org/ Then try sim/axis/gantry config
>>>>
>>>>
>>>>
>>>> 
>>>> 
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>>> 
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Re: [Emc-users] Custom home sequence

[John Thornton]

Yes I do.

JT


On 2/20/2017 5:02 PM, Andrew wrote:

I remember that you had a similar .txt for preempt-rt on Mint, didn't you?

2017-02-21 0:51 GMT+02:00 John Thornton :


This is how I install rtai on Linux Mint 17.3

JT



On 2/20/2017 4:12 PM, Eric H. Johnson wrote:


I should add, I am using Xubuntu 12.04.



Does rtai need to be installed separately to use these modules? I believe
apt-key ran properly and the linuxcnc repositories were added properly.
There were no errors with apt-get update.  I am getting errors of the
form:

The following packages have unmet dependencies:
Linuxcnc: Depends: linux-image-3.4-9-rtai-686-pae but it is not
installable.
  Depends: rtai-modules-3.4-9-rtai-686-pae but it is
not
installable ...

Thanks


Developer (master) version does exactly what you need.
It also has sync homing. See
http://linuxcnc.org/docs/devel/html/config/ini-homing.html#_home_sequence

You can install master branch from buildbot http://buildbot.linuxcnc.org/
Then try sim/axis/gantry config





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sudo apt-get install -y devscripts build-essential
sudo apt-get install -y imagemagick texlive-font-utils tcl8.6-dev tk8.6-dev
sudo apt-get install -y libxaw7-dev libncurses-dev libreadline-gplv2-dev
sudo apt-get install -y dblatex groff python-dev python-tk libglu1-mesa-dev
sudo apt-get install -y libgtk2.0-dev asciidoc source-highlight 
sudo apt-get install -y libboost-python-dev texlive-lang-cyrillic debhelper
sudo apt-get install -y texlive-lang-french texlive-lang-spanish
sudo apt-get install -y texlive-lang-german libmodbus-dev dvipng
sudo apt-get install -y libusb-1.0-0-dev graphviz inkscape python-numpy
sudo apt-get install -y python-imaging-tk python-gtkglext1 tclreadline blt
git clone git://git.linuxcnc.org/git/linuxcnc.git lcnc
cd lcnc
git checkout -b 2.7 origin/2.7
debian/configure uspace ; debuild -uc -us
cd ..
sudo dpkg -i linuxcnc-uspace_2.7.4_i386.deb
sudo dpkg -i linuxcnc-doc-en_2.7.4_all.deb--
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Re: [Emc-users] Custom home sequence

[John Thornton]

This is how I install rtai on Linux Mint 17.3

JT


On 2/20/2017 4:12 PM, Eric H. Johnson wrote:

I should add, I am using Xubuntu 12.04.



Does rtai need to be installed separately to use these modules? I believe
apt-key ran properly and the linuxcnc repositories were added properly.
There were no errors with apt-get update.  I am getting errors of the form:

The following packages have unmet dependencies:
Linuxcnc: Depends: linux-image-3.4-9-rtai-686-pae but it is not installable.
 Depends: rtai-modules-3.4-9-rtai-686-pae but it is not
installable ...

Thanks


Developer (master) version does exactly what you need.
It also has sync homing. See
http://linuxcnc.org/docs/devel/html/config/ini-homing.html#_home_sequence

You can install master branch from buildbot http://buildbot.linuxcnc.org/
Then try sim/axis/gantry config




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Linux Mint RTAI
Install LinuxMint 17.3 32-bit Mate Desktop
sudo apt-get update
sudo apt-get -y dist-upgrade
sudo apt-key adv --keyserver hkp://keys.gnupg.net --recv-key 3cb9fd148f374fef
sudo add-apt-repository "deb http://linuxcnc.org/ precise base 2.7-rtai"
sudo apt-get update
sudo apt-get -y install linux-image-3.4-9-rtai-686-pae 
rtai-modules-3.4-9-rtai-686-pae
sudo apt-get -y install linux-headers-3.4-9-rtai-686-pae
reboot and hold the left shift key down to get to the boot menu
select advanced options and pick the 3.4-9-rtai-686-pae kernel
uname -r
should report 3.4-9-rtai-686-pae
open the synaptic package manager and remove the generic image and headers
git clone git://git.linuxcnc.org/git/linuxcnc.git emc
sudo apt-get install -y devscripts build-essential
sudo apt-get install -y imagemagick texlive-font-utils tcl8.6-dev tk8.6-dev
sudo apt-get install -y libxaw7-dev libncurses-dev libreadline-gplv2-dev
sudo apt-get install -y dblatex groff python-dev python-tk libglu1-mesa-dev
sudo apt-get install -y libgtk2.0-dev asciidoc source-highlight 
sudo apt-get install -y libboost-python-dev texlive-lang-cyrillic debhelper
sudo apt-get install -y texlive-lang-french texlive-lang-spanish
sudo apt-get install -y texlive-lang-german libmodbus-dev dvipng
sudo apt-get install -y libusb-1.0-0-dev graphviz inkscape python-numpy
sudo apt-get install -y python-imaging-tk python-gtkglext1 tclreadline blt
sudo apt-get install -y bwidget libtk-img tclx w3c-linkchecker

To build a RIP
cd emc/src
./autogen.sh
./configure --enable-build-documentation=html
make
sudo make setuid
cd ..
. ./scripts/rip-environment

To build a DEB
cd emc
git checkout -b 2.7 origin/2.7
debian/configure -r ; debuild -uc -us
cd ..
sudo dpkg -i linuxcnc_2.7.4_i386.deb
sudo dpkg -i linuxcnc-doc-en_2.7.4_all.deb

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Re: [Emc-users] Custom home sequence

[John Thornton]

The master branch has gantry homing now.

JT


On 2/20/2017 11:09 AM, Eric H. Johnson wrote:
>   
>
> I am finally getting around to re-controlling a large (15' x 30') XY table.
> The gantry is driven by two oppositely mounted servo motors, axes Y1 and Y2.
> The current homing sequence works as follows:
>
>   
>
> Y1 and Y2 move together until Y1 resolves its home.
>
> Y2 then decouples from Y1 and resolves its home.
>
> Thereafter Y1 and Y2 are recoupled.
>
>   
>
> I am trying to figure out how to do basically the same thing under Linuxcnc,
> or an alternate approach that works equally as well. I looked at the
> "gantry" example program, which does much the same thing with stepper
> motors, and uses gantrykins for the kinematics module. The home looks to be
> done effectively manually by switching between joint and world mode. Can
> this be done as part of an automated home sequence?
>
>   
>
> Note: There is enough play in Y2 that it can move roughly +/- 2" from being
> dead on with Y1 before it will start to mechanically bind.
>
>   
>
> Thanks.
>
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Re: [Emc-users] [OT] Wife is good to go

[John Thornton]

Any little phone shop can replace it, we even have a couple of shops 
like that here in little Poplar Bluff.

JT


On 2/19/2017 6:01 PM, Gene Heskett wrote:
> On Sunday 19 February 2017 13:37:09 John Thornton wrote:
>
>> Great news Gene. Maybe you have a bad battery...
>>
>> JT
>>
> Who is gonna replace it John?  They (Wallies), don't even have
> replacement batteries that I am aware of.
>
>> On 2/19/2017 12:21 PM, Gene Heskett wrote:
>>> Hi guys;
>>>
>>> I just got a call from my Missus, all the tests and imagery they've
>>> done at Ruby must be ok, so they discharged her effective  now, and
>>> now I'm killing an hour while my cell phone charges as I'll need it
>>> on the approach to Ruby. She was acting normal when I was there
>>> yesterday. Answered prayers?
>>>
>>> I'd kill for a cell phone that didn't go dead in 18 hours in my
>>> pocket, her identical model can go 2+ days, and is used 4x as much.
>>> Go figure...
>>>
>>> Cheers, Gene Heskett
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>
> Cheers, Gene Heskett


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Re: [Emc-users] Simulated THCAD signal

[John Thornton]

Never mind I played with siggen a bit more and figured out just put a 
positive offset greater than frequency... I think that will work

JT


On 2/19/2017 11:16 AM, John Thornton wrote:
> I'm trying to simulate a THCAD signal that at 0v it's 117KHz and at 10v
> it's 918KHz. First I need a base signal at say 250KHz then add to that a
> signal like you get out of siggen to vary the signal up and down. Is
> there a component that can generate the base frequency then add a siggen
> sine to that? Or can siggen do that and I just don't know how?
>
> Thanks
> JT
>
>
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Re: [Emc-users] [OT] Wife is good to go

[John Thornton]

Great news Gene. Maybe you have a bad battery...

JT


On 2/19/2017 12:21 PM, Gene Heskett wrote:
> Hi guys;
>
> I just got a call from my Missus, all the tests and imagery they've done
> at Ruby must be ok, so they discharged her effective  now, and now I'm
> killing an hour while my cell phone charges as I'll need it on the
> approach to Ruby. She was acting normal when I was there yesterday.
> Answered prayers?
>
> I'd kill for a cell phone that didn't go dead in 18 hours in my pocket,
> her identical model can go 2+ days, and is used 4x as much.  Go
> figure...
>
> Cheers, Gene Heskett


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[Emc-users] Simulated THCAD signal

[John Thornton]

I'm trying to simulate a THCAD signal that at 0v it's 117KHz and at 10v 
it's 918KHz. First I need a base signal at say 250KHz then add to that a 
signal like you get out of siggen to vary the signal up and down. Is 
there a component that can generate the base frequency then add a siggen 
sine to that? Or can siggen do that and I just don't know how?

Thanks
JT


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Re: [Emc-users] vfd compatibility

[John Thornton]

I have them in stock... and offer the best prices for international 
shipping.

https://mesaus.com/index.php?route=product/product&path=65&product_id=91

JT

On 2/19/2017 7:08 AM, andy pugh wrote:
> On 16 February 2017 at 09:20, Valerio Bellizzomi  wrote:
>> I guess it will take a month or so as I live in Italy
>
> Next time, consider:
> http://www.shop.cncmonster.de/LinuxCNC/Interface-Karten/Servointerface/SPINx1-PWM::375.html
> http://eusurplus.com/index.php?route=common/home (though none in stock)
> http://www.duzi.cz/shop_cnc/index.php?main_page=index&cPath=1 (also none 
> listed)
>
>


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Re: [Emc-users] how to test output pins?

[John Thornton]

The one I wrote.

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

JT


On 2/13/2017 8:26 AM, Valerio Bellizzomi wrote:
> Thanks Todd, which parallel port test program should I use to toggle the
> output pins ?
>
>
> Thanks,
> Valerio
>
>
> On Sat, 2017-02-11 at 09:43 -0500, Todd Zuercher wrote:
>> Most parallel port plugs have the pins numbered, and the Linuxcnc parport 
>> driver's hal pin numbers correspond to that numbering.  But if you need/want 
>> physical conformation, you can probe the parallel port pins with an LED adn 
>> use the parallel port test program to toggle the outputs watching for the 
>> LED to change.
>>
>> - Original Message -
>> From: "Valerio Bellizzomi" 
>> To: "EMC Users" 
>> Sent: Saturday, February 11, 2017 1:35:53 AM
>> Subject: [Emc-users] how to test output pins?
>>
>> Hello,
>>
>> I can test input bits with hal show, but how do I test output pins?
>>
>> That is I need to know parallel port physical pin positions in order to
>> choose my pin schema and make a correspondence hal pin --> physical pin
>>
>>
>> Thanks.
>>
>> Valerio
>>
>>
>>
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>
>
>
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Re: [Emc-users] Changing the full scale range the pyvcp tach displays

[John Thornton]

http://linuxcnc.org/docs/2.7/html/gui/gladevcp.html

JT


On 2/9/2017 7:08 PM, Gene Heskett wrote:
> On Thursday 09 February 2017 14:09:14 andy pugh wrote:
>
>> On 9 February 2017 at 17:56, Gene Heskett  wrote:
>>> One of the things I would like to do is to change the full scale
>>> range of the pyvcp tachometer, which is set in the panel-pyvcp.xml
>>> file at present.
>> I think that the easiest way to do this would be to use a GladeVCP
>> tachometer.
> Can you expand on that? I thought th gladevcp thing was a progress bar.
>
> Thanks Andy.
>
> Cheers, Gene Heskett


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Re: [Emc-users] need a tutorial on 3 phase, 1.2 degree a step, motors

[John Thornton]

Do you have a link to the $40 servo and $50 drive? All I can find on 
fleabay is $52 and up for the servo + $26 to $32 for shipping.

JT


On 2/6/2017 7:27 AM, dragon wrote:
> On another note... you can get E661 servos with encoders off of ebay for
> $40 to your door and they are a great match for your Sheldon. Grab some
> used servo drives for about $50 each depending on your power supply
> situation.


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Re: [Emc-users] VFD recommendations

[John Thornton]

I also have an Automation Direct GS2 on my BP knee mill and rigid tap 
with it (need the braking resistor).

JT


On 2/1/2017 9:00 PM, Sebastian Kuzminsky wrote:
> On 02/01/2017 07:35 PM, dragon wrote:
>> I want to start looking for VFDs for my lathe and mill conversions. I
>> have two 2hp 3 phase motors to use for the spindles. Of course if I came
>> across a 3hp for the lathe some day it might get upgraded.
>>
>> Are there any drawbacks to using MODBUS instead of the usual analog 10v
>> interface?
>>
>> Does anyone have suggestions for particular brands or models of VFD? I
>> have worked with several Hitachi and one Toshiba VFD but that is all.
>> Remember that these are home/hobby machines and I do need to try to keep
>> costs down, but I don't want to be penny wise and pound foolish either.
> I have an Automation Direct GS2-23P0 (2.2 kW/3 HP output) on my
> Bridgeport.  It runs on 240V single phase.  It's hooked up to LinuxCNC
> over Modbus.
>
> It's been 100% trouble free since installation 7ish years ago.
>
>


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Re: [Emc-users] Tida_TD-1336_lathe

[John Thornton]

I have a Samson TB 6B 16" x 48" and it will swing a 20" face place with 
the drop bed removed (never done that). Mine is in pretty good shape for 
an 80's lathe and I use it regular. I can't wait to see your conversion 
might inspire me to convert the ole Samson.

JT


On 1/31/2017 5:37 PM, Kirk Wallace wrote:
> A lathe showed up on my doorstep (almost). A friend called up and said
> "I've got a lathe in my trailer and I want to know if I can bring it by
> today." I guess he knows me well enough to know that I could not refuse.
> I have had it a couple of days and I took some time to scrape the first
> layer of grime off of it and take some pictures.
> http://wallacecompany.com/machine_shop/Tida_Samson_TD-1336_lathe/
>
> One of the control panels indicates it is a Samson TD-1336 (13" x 36")
> and that it was made in Taiwan in 1982. It looks like a common Chinese
> lathe offered by Grizzly or Harbor Freight. It doesn't have a lot of
> wear, but has been abused. The back gears are stripped, the cross slide
> has been crashed into, the spindle and chuck have been hammered on
> extensively.
>
> It's too early to have a firm plan for this machine, but I'm thinking
> that I would like to convert it to:
> - 2hp 3 phase motor, VFD, belt drive, encoder (remove everything down to
> the spindle shaft)
> - Servo, ballscrew and encoder for Z (remove change gear and feed
> drives)
> - Servo, ballscrew and encoder for X (remove cross slide and apron)
> - replace missing tail stock
> - regrind spindle D1-4 surfaces
> - regrind chuck surfaces
> - maybe replace spindle bearings if they show hammering damage
> - of course add LinuxCNC controller
>
>
>


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Re: [Emc-users] nema 24 motors.

[John Thornton]

The servos on my BP knee mill with an Anilam 1100M conversion have 
timing belt reduction to the ball screw... and so does my CHNC.

JT


On 1/24/2017 10:03 AM, dan...@austin.rr.com wrote:
> Don't servos need a lot of reduction to get the torque up?  Gearboxes always 
> bring backlash into the system.  Low backlash boxes are lots of $$$.
>
>
>
> Danny
>
>  dragon  wrote:
>> I hate to say it but I'm with Ed on this one. I just paid $32 each for
>> e661 servos WITH encoders to put on my 10x24 lathe and Jet 626 mill.
>> Grab a free thrown out PC and get rid of the noise problems from that
>> SPI bus on the rPi. Analog input drives can be had on ebay for $35,
>> especially if you run under 80vDC. With my 96v supply I hope to be up
>> around 150ipm.
>>
>> While 3 phase steppers are MUCH better than two phase for all of the
>> reasons that Danny listed, you can spend the same amount or less for a
>> servo setup if you don't mind some used components.
>>
>> After having worked with both, I knew that I wouldn't be happy with a
>> stepper system even for my little home machines.
>>
>> Just my opinion...
>>
>> On 01/24/2017 08:49 AM, Ed wrote:
>>> On 01/23/2017 11:45 PM, Gene Heskett wrote:
 Greetings all;

 I see some "Nema 24" motors at quite reasonable prices showing up on
 fleabay,
>>> SNIP
 Now, I don't believe this is going to help with the resonance stalls I am
 getting at about 30 ipm, so I'm thinking of building a viscous damper to
 fit on the rear of this puppy.  But unlike the ones on my hf micromill,
 which are long steel spools carrying a 2+ inch stack of heavy fender
 washers with elastomer sheets between the washers, which are true shock
 absorbers as the resonance is killed by the frictional losses as the
 washers walk on the talcum covered elastomer, but I don't have room for
 a 2+" stack of fender washers in this spot. 5/8" axially at best.
>>> SNIP
 Cheers, Gene Heskett
>>>
>>> RANT MODE ON
>>>
>>> Why in this day of cheap encoders, small ebay servo motors, and good
>>> inexpensive servo drives does any one even use stepper motors?
>>>
>>> Dampers, resonance issues, lost steps, stalls, only 30 IPM? Why?
>>>
>>> Gene, don't stay on the dark side! Go to servo's and don't look back,
>>> you will never regret it.
>>>
>>> RANT MODE OFF
>>>
>>> deflates-
>>>
>>> Ed.
>>>
>>>
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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[John Thornton]

Hi Les,

You can extend the I/O of a 7i76 
<http://mesaus.com/index.php?route=product/product&path=62&product_id=53> 
or 7i77 
<http://mesaus.com/index.php?route=product/product&path=62&product_id=54> 
with one smart serial card 
<http://mesaus.com/index.php?route=product/category&path=72> and a cable 
<http://mesaus.com/index.php?route=product/product&path=71&product_id=81>. 
The 7i84 
<http://mesaus.com/index.php?route=product/product&path=72&product_id=103> 
for example gives you 32 inputs and 16 outputs in addition to the 7i76 
or 7i77 I/O.

If you need a lot of I/O then the 7i74 
<http://mesaus.com/index.php?route=product/product&path=62&product_id=107> 
gives you up to 8 smart serial cards for I/O.

JT


On 1/14/2017 6:00 PM, Les Newell wrote:
> Hi JT,
>
> Looking through your website the 7I92 + 7I77 combo looks promising. It
> would definitely work for the mill but I need to check if there are
> enough I/Os for the router. I also have a suspicion the current control
> on the router switches to ground rather than +24.
>
> Les
>
>
> On 14/01/17 15:20, John Thornton wrote:
>> Hi Les,
>>
>> I have both of those in stock at http://mesaus.com/
>>
>> The cool thing about the 5/5i24 is you can connect an Opto 22 base to
>> one port and have a lot of I/O.
>>
>> JT
>
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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[John Thornton]

AFAIK any of them with a 50 pin header.

for example this one 
<http://www.ebay.com/itm/Opto-22-G4PB16-I-O-Rack-PLC2133-/172333778344?hash=item281fe4c5a8:g:8FoAAOSwi0RX0Hhk>

JT

On 1/14/2017 10:16 AM, Eric Keller wrote:
> On Sat, Jan 14, 2017 at 10:20 AM, John Thornton  wrote:
>> The cool thing about the 5/5i24 is you can connect an Opto 22 base to
>> one port and have a lot of I/O.
> which Opto22 base?
>
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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[John Thornton]

Hi Les,

I have both of those in stock at http://mesaus.com/

The cool thing about the 5/5i24 is you can connect an Opto 22 base to 
one port and have a lot of I/O.

JT


On 1/13/2017 5:09 PM, Les Newell wrote:
> I have a couple of rebuild projects coming up (a router and a milling
> machine) and I am trying to decide between PCI or Ethernet. I like the
> idea of Ethernet because it will probably be around long after PCIe has
> disappeared but the idea of it running in user space instead of realtime
> makes me a little nervous. Both machines will be using their original
> servo drives connected to 7I33 analog servo interfaces.
>
> Does anyone here have any recommendations?
>
> Les
>
>
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Re: [Emc-users] Noise problem found, but not fixed.

[John Thornton]

Nope

JT


On 12/29/2016 10:34 AM, Gene Heskett wrote:
> On Thursday 29 December 2016 11:11:56 John Thornton wrote:
>
>> Gene, your package is on the way.
>>
>> JT
> Thanks JT but aren't you missing some numbers?
>> On 12/29/2016 10:06 AM, Gene Heskett wrote:
>>> On Thursday 29 December 2016 06:25:34 andy pugh wrote:
>>>> On 29 December 2016 at 04:49, Danny Miller 
>>> wrote:
>>>>> They all look pretty much the same, they're not.
>>>> Meanwell is an interesting example of a Chinese brand that has made
>>>> enough of a reputation for being not-awful that others have started
>>>> making fakes.
>>>> (The same has happened with Fotek SSRs, you can no longer tell if
>>>> you are getting a real rip-off of a Crydom or a fake of a rip-off
>>>> device)
>>>>
>>>> The real Mean Well chassis supplies on the RS web site have
>>>> hexagonal-punched covers. That might be a way to tell:
>>>> http://uk.rs-online.com/web/p/embedded-switch-mode-power-supplies-s
>>>> mps /1065822/
>>>>
>>>> Why not try running from a bench PSU or even batteries as an
>>>> experiment?
>>> I don't have a bench supply.  But I did find an expired computer psu
>>> last night, and extracted the small pcb with most of its input
>>> filtering, and when I get my cramping legs to take me out there,
>>> plus input a couple cups of caffeine, I'll put it incircuit for
>>> effects.  But first call JT, he has a 3 amp for little enough.
>>>
>>> Someone mentioned that the real meanwell's covers have hex holes.
>>> This one has round holes.  Sigh.
>>>
>>> Cheers, Gene Heskett
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> Cheers, Gene Heskett


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Re: [Emc-users] Noise problem found, but not fixed.

[John Thornton]

Gene, your package is on the way.

JT


On 12/29/2016 10:06 AM, Gene Heskett wrote:
> On Thursday 29 December 2016 06:25:34 andy pugh wrote:
>
>> On 29 December 2016 at 04:49, Danny Miller 
> wrote:
>>> They all look pretty much the same, they're not.
>> Meanwell is an interesting example of a Chinese brand that has made
>> enough of a reputation for being not-awful that others have started
>> making fakes.
>> (The same has happened with Fotek SSRs, you can no longer tell if you
>> are getting a real rip-off of a Crydom or a fake of a rip-off device)
>>
>> The real Mean Well chassis supplies on the RS web site have
>> hexagonal-punched covers. That might be a way to tell:
>> http://uk.rs-online.com/web/p/embedded-switch-mode-power-supplies-smps
>> /1065822/
>>
>> Why not try running from a bench PSU or even batteries as an
>> experiment?
> I don't have a bench supply.  But I did find an expired computer psu last
> night, and extracted the small pcb with most of its input filtering, and
> when I get my cramping legs to take me out there, plus input a couple
> cups of caffeine, I'll put it incircuit for effects.  But first call JT,
> he has a 3 amp for little enough.
>
> Someone mentioned that the real meanwell's covers have hex holes. This
> one has round holes.  Sigh.
>
> Cheers, Gene Heskett


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Re: [Emc-users] Noise problem found, but not fixed.

[John Thornton]

Gene, you have a package on the way... a little lagniappe from me.

JT


On 12/28/2016 7:32 PM, Gene Heskett wrote:
> On Wednesday 28 December 2016 17:42:29 John Thornton wrote:
>
>> Hi Gene,
>>
>> Want to test one of my 5v 3a regulated power supplies?
>>
>> JT
> A linear I'd assume.  Details @url?
>
> This one?
>
> http://mesaus.com/index.php?route=product/product&path=67&product_id=73
>
> Thats not a linear.
>
> At that $$, I can afford to "test" it, but your web page doesn't like my
> FF, so I am stuck at the checkout steps display but its all DIW from
> here. I'll call tomorrow and pass the card nums.
>> On 12/28/2016 4:33 PM, Gene Heskett wrote:
>>> Greetings everybody;
>>>
>>> Now I am asking a question that I should know the answer to.
>>>
>>> It looks like, from the evidence so far, that this 5v 4a little
>>> switchmode psu should be sent to the fcc and let them ban it from
>>> ever coming off the boat or airplane on US soil.
>>>
>>> Its "static" ground terminal is common to the case, and I have now
>>> grounded it by way of a couple flat braided ground straps about
>>> 5/16" inch wide, back to the ground bolt in the bottom of the box.
>>> Ditto the static ground on the z motors 60 volt psu. House static
>>> coming in is now also bolted at that stud.  The scope probes ground
>>> lead is on that stud, the clipon probe is clipped to one of the
>>> ioconnectors ground pins.
>>>
>>> That point is bouncing around 2.5v p-p with the switching activity
>>> in that psu.  That bolt s/b common to the lathes bed casting thru
>>> the bolts that mount it on a post bolted to the chip pan, which is
>>> braced by an angle iron bolted to this post, with the end of the
>>> angle, about 8" away, bolted solidly to the bed casting at the other
>>> end.
>>>
>>> I purposely did not connect anything in the at667 encoder wireup, to
>>> the frame anyplace.  If I could find a good, real dirt ground for
>>> the scope probe, I take bets that the whole latch is bouncing at
>>> least 25  volts p-p to that real ground.
>>>
>>> The only way I can see ATM, is to install some "longitudinal"
>>> filters, therefore chokeing that noise back into the psu instead of
>>> giving it something to work against in the form of a solid
>>> connection to the powerline.  I can source such a filter from Dave
>>> at the tv station as I know he has a pile of failed monitor pcb's,
>>> all of which will have good filters we can excavate.
>>>
>>> Or should I take the chance that the next one I buy on fleabay,
>>> would be quiet?  Your call.
>>>
>>>
>>> Cheers, Gene Heskett
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> Cheers, Gene Heskett


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Re: [Emc-users] Noise problem found, but not fixed.

[John Thornton]

Hi Gene,

Did you have trouble before with the web store?

JT

On 12/28/2016 7:32 PM, Gene Heskett wrote:
> On Wednesday 28 December 2016 17:42:29 John Thornton wrote:
>
>> Hi Gene,
>>
>> Want to test one of my 5v 3a regulated power supplies?
>>
>> JT
> A linear I'd assume.  Details @url?
>
> This one?
>
> http://mesaus.com/index.php?route=product/product&path=67&product_id=73
>
> Thats not a linear.
>
> At that $$, I can afford to "test" it, but your web page doesn't like my
> FF, so I am stuck at the checkout steps display but its all DIW from
> here. I'll call tomorrow and pass the card nums.
>>


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Re: [Emc-users] Noise problem found, but not fixed.

[John Thornton]

Hi Gene,

Want to test one of my 5v 3a regulated power supplies?

JT


On 12/28/2016 4:33 PM, Gene Heskett wrote:
> Greetings everybody;
>
> Now I am asking a question that I should know the answer to.
>
> It looks like, from the evidence so far, that this 5v 4a little
> switchmode psu should be sent to the fcc and let them ban it from ever
> coming off the boat or airplane on US soil.
>
> Its "static" ground terminal is common to the case, and I have now
> grounded it by way of a couple flat braided ground straps about 5/16"
> inch wide, back to the ground bolt in the bottom of the box. Ditto the
> static ground on the z motors 60 volt psu. House static coming in is now
> also bolted at that stud.  The scope probes ground lead is on that stud,
> the clipon probe is clipped to one of the ioconnectors ground pins.
>
> That point is bouncing around 2.5v p-p with the switching activity in
> that psu.  That bolt s/b common to the lathes bed casting thru the bolts
> that mount it on a post bolted to the chip pan, which is braced by an
> angle iron bolted to this post, with the end of the angle, about 8"
> away, bolted solidly to the bed casting at the other end.
>
> I purposely did not connect anything in the at667 encoder wireup, to the
> frame anyplace.  If I could find a good, real dirt ground for the scope
> probe, I take bets that the whole latch is bouncing at least 25  volts
> p-p to that real ground.
>
> The only way I can see ATM, is to install some "longitudinal" filters,
> therefore chokeing that noise back into the psu instead of giving it
> something to work against in the form of a solid connection to the
> powerline.  I can source such a filter from Dave at the tv station as I
> know he has a pile of failed monitor pcb's, all of which will have good
> filters we can excavate.
>
> Or should I take the chance that the next one I buy on fleabay, would be
> quiet?  Your call.
>
>
> Cheers, Gene Heskett


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Re: [Emc-users] Allowable length of db25 interconnect cabling to talk to an epp version of a 7i90?

[John Thornton]

Merry Christmas Gene.

JT


On 12/24/2016 9:58 AM, Gene Heskett wrote:
> On Saturday 24 December 2016 09:41:48 John Thornton wrote:
>
>> Hi Gene,
>>
>> You could use this:
>>
>> http://mesaus.com/index.php?route=product/product&path=71&product_id=5
>> 9
>>
>> with this:
>>
>> http://mesaus.com/index.php?route=product/product&path=71&product_id=7
>> 0
>>
>> To get 7' between the 7i90 and the PC.
>>
>> JT
> The 5i25 doesn't have a bit file that can drive the 7i90 in epp mode
> according to Peter. So this cable would be from the parport on the dell,
> to the 7i90. I'll find out as I have a box of cable and some connectors.
>
> Thanks John. Have a Merry Christmas.
>
> Cheers, Gene Heskett


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Re: [Emc-users] Allowable length of db25 interconnect cabling to talk to an epp version of a 7i90?

[John Thornton]

Hi Gene,

You could use this:

http://mesaus.com/index.php?route=product/product&path=71&product_id=59

with this:

http://mesaus.com/index.php?route=product/product&path=71&product_id=70

To get 7' between the 7i90 and the PC.

JT


On 12/24/2016 6:20 AM, Gene Heskett wrote:
> Greetings folks;
>
> This is a heck of a thing to throw out on Christmas Eve.
>
> I am about burned out on trying to make the raspi 3b work.
>
> I saw it work once, for about 2 days, then an update blew it up by
> replacing the rt kernel, and it has not worked since. In the sd cards
> I've made since, probably 8 or more, following the recipe given, the
> halrun;halc md loadrt hostmot2;loadrt hm2_rpspi test procedure works
> perfectly.  But linuxcnc refuses to load that hm2_rpspi driver.
>
> Mr. Martinjack built me an image and sent me the link to it. No gui, so
> testing would have to be done over an ssh -Y login.  He, I believe went
> to quite some effort to do that, and I assume that it worked on his
> raspi-3b. But when I wrote it to a zeroed 32Gb card, expanded the
> filesystem on the first boot, then configured the networking in static
> mode, making it immutable as I went so whatever raspian uses in place of
> network-mangler can't tear it down on the next boot, the result can't do
> the halrun test.
> ---
> pi@raspberrypi:~ $ halrun
> halcmd: loadrt hostmot2
> Note: Using POSIX realtime
> hm2: loading Mesa HostMot2 driver version 0.15
> halcmd: loadrt hm2_rpspi
> Unknown board: HOST
> hm2_rpspi: rtapi_app_main: Operation not permitted (-1)
> :2: waitpid failed /usr/bin/rtapi_app hm2_rpspi
> :2: /usr/bin/rtapi_app exited without becoming ready
> :2: insmod for hm2_rpspi failed, returned -1
> -
> which is the same failure I get when trying to start linuxcnc on one of
> my builds.
>
> And this is the 2nd pi-3b I've put in.
>
> Does my use of a 32GB card have anything to do with this?
> Does my use of the full jessie install instead of the jessie-lite have
> anything to do with this? I can try that once.
>
> If that fails, I'll quit beating my head with a hammer and reset this
> 7i90 to an epp interface and go back to an x86 computer to drive it, but
> that brings up the next $64K question.  The big old Dell I have to drive
> it with isn't swarf proof by any means, and it will take at least 6 or
> even 8 feet of ribbon cable to get it far enough away from the swarf to
> be safe from flying chips.  Can I use a ribbon cable that long with good
> results?  The man page says it could be a problem but doesn't say how
> long is too long.  And I've no clue if the parport on this old Dell can
> be made epp-1.9 compliant.  TBD I guess.
>
> Thanks everybody. And have a Merry Christmas.
>
> Cheers, Gene Heskett


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Re: [Emc-users] LinuxCNC education

[John Thornton]

The first place to start is the documentation

http://linuxcnc.org/docs/2.7/html/

I also have some info on my web site

http://gnipsel.com/linuxcnc/index.html

I would stay away from sources that are not specific to LinuxCNC as it 
is ever evolving and the only current information is in the 
documentation. The LinuxCNC wiki has a ton of information but be careful 
some is dated as all of it is user maintained. The LinuxCNC forum is 
very active and full of good information as well as this mailing list.

For general machining info the practical machinist forum is good.

JT


On 12/14/2016 1:41 PM, Andrew wrote:
> Hello!
>
> Are there any courses, lectures, teaching aids, educational resources,
> presentations about LinuxCNC?
>
> Also I'd appreciate your advices on modern CNC courses / books.
>
> Thanks,
> Andrew
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Re: [Emc-users] To BJT & PCW

[John Thornton]

Hi Gene,

No, I don't have anything like that.

JT

On 12/3/2016 12:18 PM, Gene Heskett wrote:
> Greetings;
>
> I spent an hour early this morning looking around in the cracks and
> crannies of both web sites, looking for an adapter that would plug into
> the 50 pin sockets on the 7i90, that would, without interfering with the
> adjacent socket, give me a row of micro screw terminals so I wouldn't
> have to putz with cutting these pissy-assed, cheap jumper cables in two
> and splicing them onto the ends of the cables coming into the box,
>
> Failed miserably.
>
> I can well imagine that such a connector is not a COTS item. But trying
> to get 50 wire ribbon cables to some place remote from a card like the
> 7i90HD isn't a luxury I have room for, so I am forced to use these very
> pooly built jumpers solder spliced & heat shrink covered to make the
> transition from the larger gauge coupling wires in the cables going out
> to the machine. It does suggest a new layout at some point for those
> cards that use the 50 pin scsi-ii type sockets, putting one connector
> per card edge so the plugging in of a purely passive terminal block
> adaptor then leaves access for all 3, as opposed to haveing them covered
> by their neighbors 50-way ribbons.
>
> Better, nearly as compact options? Suggestions aimed for limited overhead
> situations?  I'm all eyes.
>
> Cheers, Gene Heskett


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Re: [Emc-users] Rigid Tapping

[John Thornton]

Tap some air first!

JT

On 11/17/2016 2:21 PM, hubert wrote:
> I like most of the suggestions except the MDF because it tends to wear
> out cutters.  I ordered a small amount of machinable wax, it will be
> here tomorrow, but I am in a hurry so I will try the bolt and nut
> approach today.  If that works I will test on a small chunk of delrin,
> if that goes well I will tackle the aluminum.
>
> Thanks
>
> Hubert
>
>
> On 11/17/16 1:08 PM, Roland Jollivet wrote:
>> You could practise with a piece of threaded rod(or bolt) in the chuck, and
>> a nut held lightly in the vice. If the nut moves up or down during the tap
>> cycle there's a problem. If you start with taps, a post mortem on a cut
>> thread would be more difficult.
>>
>>
>> On 17 November 2016 at 19:27, Kirk Wallace 
>> wrote:
>>
>>> On 11/17/2016 09:12 AM, andy pugh wrote:
 On 17 November 2016 at 17:01, Kirk Wallace 
>>> wrote:
> Machinable wax comes to mind for testing. It is easy to make and reuse.
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Re: [Emc-users] armbian vs raspian Q

[John Thornton]

I made a claim with aliexpress once when I didn't get the shipment and I 
got a refund. IIRC it is done on your orders page not a suppliers page.

JT

On 11/15/2016 9:29 AM, Gene Heskett wrote:
> And when I tried to open a dispute, with the target being getting a 
> good o-pi, their dispute form will not take the button clicks to 
> enable the submission. I even went to the trouble of making a 220 
> megabyte video, as the page requested, showing the defective video, 
> but the submit button, while responding to the click, does not feed it 
> back to aliexpress/alibaba so I can open the dispute. It's only 
> $44.47, and that will not affect the height of my ladder against the 
> side of the hog. But this list will recall I bitched about them once 
> before. But it will NOT happen again, they are now on my shitheads 
> list. I just checked with my bank, and they can't protest it either. I 
> like the idea of the o-pi, and may even see if I can find one on this 
> side of the pond I can buy as it will shrink the control structure by 
> quite a few feet of wire, and the nominally 1 cubic foot of the dell 
> computer. Cheers, Gene Heskett 


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Re: [Emc-users] Lathe config Q's

[John Thornton]

Welders glue.

JT


On 11/11/2016 11:02 AM, Gene Heskett wrote:
> On Friday 11 November 2016 06:11:54 andy pugh wrote:
>
>> On 11 November 2016 at 05:31, Gene Heskett 
> wrote:
>>> Thanks Marius. Or as I just found -1 for both works,
>> Negative numbers are for tandem axes Don't use that.
>
> That, and I am running out of patience with glues, these AT-667's are in
> trenches of the mounting bracket, which is made out of 7076-t6, cut dry,
> and the cut washed with acetone, but the superglues, with days of setup
> time, are not adequately holding the device.


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Re: [Emc-users] 7i92 in eu

[John Thornton]

They are in stock here:

http://mesaus.com

JT

On 10/28/2016 3:51 PM, Davide wrote:
> On 28 October 2016 at 21:35, andy pugh  wrote:
>
>>   
>> http://eusurplus.com/index.php?route=product/product&product_id=614&search=7i92&description=true&sub_category=true
> Sorry, I just noticed, out of stock. :-(
>
> I can't tell if they are out of stock here:
> http://www.shop.cncmonster.de/LinuxCNC/FPGA-Karten//::386.html
>
> •••
>
>
>
> I've sent an e-mail to eusurplus, but with no answer...
> Couldn't find cncmonsters, looks like a nice place, but no 7i92 in their shop.
> I will try to ask them too.
> Thank you Andy for your fast answer.
>
> Regards, Davide.
>
> Inviato con AquaMail per Android
> http://www.aqua-mail.com
>
>
>
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Re: [Emc-users] Cycle time discussion

[John Thornton]

Thanks Todd, docs are fixed.

JT

On 10/19/2016 02:17 PM, Todd Zuercher wrote:
> G61 Exact path mode, movement exactly as programed.  Moves will slow or stop 
> as needed to reach every programed point.  If two sequential moves are 
> exactly co-linear movement will not stop.
> G61.1 Exact stop mode, movement will stop at the end of each programed 
> segment.


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Re: [Emc-users] Cycle time discussion

[John Thornton]

How should the manual for 2.7 read? I'll fix it...

JT

On 10/18/2016 12:29 PM, Robert Ellenberg wrote:
> The discrepancy is likely because the behavior changed in 2.7. In 2.6 and
> older, both G61 modes were identical. In 2.7, we added the exact path vs
> exact stop distinction (since the new TP could do it).
>
> On Tue, Oct 18, 2016, 12:15 PM Nicklas Karlsson <
> nicklas.karlsso...@gmail.com> wrote:
>
>> There seems to be small disreptancy in manual for at least 2.6:
>>G61 - exact path mode. G61 visits the programmed point exactly, even
>> though that means temporarily coming to a complete stop.
>>G61.1 - exact stop mode. Same as G61
>>
>> G61 do not need to stop although it might happen because otherwise it fail
>> to reach exact point. G61.1 come to a complete halt at point.
>>
>> I say to change the manual would make sense.
>>
>>
>>
>> On Tue, 18 Oct 2016 11:27:34 -0400 (EDT)
>> "Todd  Zuercher"  wrote:
>>
>>> Yes, a quick test seems to show that for co-linear points G61 doesn't
>> stop but G61.1 does.  Maybe the docs should be adjusted to reflect that.
>>> - Original Message -
>>> From: "John Thornton" 
>>> To: "Enhanced Machine Controller (EMC)" >>
>>> Sent: Tuesday, October 18, 2016 10:56:56 AM
>>> Subject: Re: [Emc-users] Cycle time discussion
>>>
>>> Looks like G61.1 stops at every end point and G61 only visits each end
>>> point but may stop if needed. Could also be incorrect descriptions of
>>> them...
>>>
>>> JT
>>>
>>> On 10/18/2016 9:17 AM, Todd Zuercher wrote:
>>>> Stupid question, why do we even have a G61.1 mode?  Is it in anyway
>> different from plain G61?
>>>> - Original Message -
>>>> From: "John Thornton" 
>>>> To: "Enhanced Machine Controller (EMC)" <
>> emc-users@lists.sourceforge.net>
>>>> Sent: Tuesday, October 18, 2016 9:21:29 AM
>>>> Subject: Re: [Emc-users] Cycle time discussion
>>>>
>>>> That depends on you, if you do nothing you get G64
>>>> http://linuxcnc.org/docs/2.7/html/gcode/g-code.html#gcode:g64
>>>>
>>>> If you set G64 P  you get something else
>>>> http://linuxcnc.org/docs/2.7/html/gcode/g-code.html#gcode:g64
>>>>
>>>> If you set G61 or G61.1 you get something different
>>>> http://linuxcnc.org/docs/2.7/html/gcode/g-code.html#gcode:g61-g61.1
>>>>
>>>> JT
>>>>
>>>> On 10/18/2016 7:48 AM, Erik Friesen wrote:
>>>>> I have been watching my vintage 1996 haas, and have begun to notice
>>>>> all the non cutting times, pauses, etc.  It really seems that non
>>>>> rapid, between rapid, and other slow motions are overlooked time
>>>>> costs.  Note the non machining pauses on this DM-1
>>>>> http://www.haascnc.com/video.asp?mode=demos&VidID=c5-XXw0gLxg
>>>>>
>>>>> I see this on my machine too, rapids don't blend, so G0Z1 followed by
>>>>> G0Z5 will always have a noticeable pause.
>>>>>
>>>>> How does lcnc handle rapids in this scenario?
>>>>>
>>>>>
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Re: [Emc-users] Cycle time discussion

[John Thornton]

Looks like G61.1 stops at every end point and G61 only visits each end 
point but may stop if needed. Could also be incorrect descriptions of 
them...

JT

On 10/18/2016 9:17 AM, Todd Zuercher wrote:
> Stupid question, why do we even have a G61.1 mode?  Is it in anyway different 
> from plain G61?
>
> - Original Message -----
> From: "John Thornton" 
> To: "Enhanced Machine Controller (EMC)" 
> Sent: Tuesday, October 18, 2016 9:21:29 AM
> Subject: Re: [Emc-users] Cycle time discussion
>
> That depends on you, if you do nothing you get G64
> http://linuxcnc.org/docs/2.7/html/gcode/g-code.html#gcode:g64
>
> If you set G64 P  you get something else
> http://linuxcnc.org/docs/2.7/html/gcode/g-code.html#gcode:g64
>
> If you set G61 or G61.1 you get something different
> http://linuxcnc.org/docs/2.7/html/gcode/g-code.html#gcode:g61-g61.1
>
> JT
>
> On 10/18/2016 7:48 AM, Erik Friesen wrote:
>> I have been watching my vintage 1996 haas, and have begun to notice
>> all the non cutting times, pauses, etc.  It really seems that non
>> rapid, between rapid, and other slow motions are overlooked time
>> costs.  Note the non machining pauses on this DM-1
>> http://www.haascnc.com/video.asp?mode=demos&VidID=c5-XXw0gLxg
>>
>> I see this on my machine too, rapids don't blend, so G0Z1 followed by
>> G0Z5 will always have a noticeable pause.
>>
>> How does lcnc handle rapids in this scenario?
>>
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Re: [Emc-users] Cycle time discussion

[John Thornton]

That depends on you, if you do nothing you get G64
http://linuxcnc.org/docs/2.7/html/gcode/g-code.html#gcode:g64

If you set G64 P  you get something else
http://linuxcnc.org/docs/2.7/html/gcode/g-code.html#gcode:g64

If you set G61 or G61.1 you get something different
http://linuxcnc.org/docs/2.7/html/gcode/g-code.html#gcode:g61-g61.1

JT

On 10/18/2016 7:48 AM, Erik Friesen wrote:
> I have been watching my vintage 1996 haas, and have begun to notice
> all the non cutting times, pauses, etc.  It really seems that non
> rapid, between rapid, and other slow motions are overlooked time
> costs.  Note the non machining pauses on this DM-1
> http://www.haascnc.com/video.asp?mode=demos&VidID=c5-XXw0gLxg
>
> I see this on my machine too, rapids don't blend, so G0Z1 followed by
> G0Z5 will always have a noticeable pause.
>
> How does lcnc handle rapids in this scenario?
>
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Re: [Emc-users] Using CNC mill to hack a gantry Crane

[John Thornton]

Actually after thinking about the problem and the tools available I 
would cut a section out of the pipe above the base plate by scribing a 
mark all the way around and only cutting one side at a time with the 
band saw. Then jig it up with some flats to hold the two parts in line 
and put a good tack on each corner...

JT

On 10/15/2016 9:57 PM, hubert wrote:
> I am wanting to cut down a 1000lb rated gantry crane to a size that will
> fit my Shop.  This crane is made from 2" rectangular tubing.  I will do
> the initial cutting with a Harbor Freight band saw, but I can't count on
> it giving true 90 degree cuts.  My thoughts are to true the cut surface
> with my mill.  I will also be cutting off the flange that will be welded
> back on the tubing.  My thoughts were to use the mill true the surface
> of the flange.
>  My questions are related to the welds that I am trimming off. Will
> they cause problems for the mill?  Is it better to use High steel or
> carbide?
>
> Thanks
> Hubert
>
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Re: [Emc-users] Using CNC mill to hack a gantry Crane

[John Thornton]

I would use carbide as the welds tend to be very hard. Before milling I 
would use a very coarse grit wheel on my angle grinder to grind as much 
weld off as possible. The welded place is most likely warped from the 
welding so watch for that when you try an mill.

JT

On 10/15/2016 9:57 PM, hubert wrote:
> I am wanting to cut down a 1000lb rated gantry crane to a size that will
> fit my Shop.  This crane is made from 2" rectangular tubing.  I will do
> the initial cutting with a Harbor Freight band saw, but I can't count on
> it giving true 90 degree cuts.  My thoughts are to true the cut surface
> with my mill.  I will also be cutting off the flange that will be welded
> back on the tubing.  My thoughts were to use the mill true the surface
> of the flange.
>  My questions are related to the welds that I am trimming off. Will
> they cause problems for the mill?  Is it better to use High steel or
> carbide?
>
> Thanks
> Hubert
>
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Re: [Emc-users] Getting current RPM setting?

[John Thornton]

I see where it is wonky... let me see if I can finger out what caused 
that...

JT

On 10/5/2016 9:33 AM, andy pugh wrote:
> On 5 October 2016 at 15:17, Sebastian Kuzminsky  wrote:
>> But the information *is* available in the Interpreter (in Task), and
>> shared from there to all other components that want it, via the Status
>> structure.  The bests place to export it from is probably halui.  So I
>> change my suggestion from "add a pin to Motion", to "add a pin to halui"
> Would it be available to a userspace Python component via the
> linuxcnc.stat structure?
> http://linuxcnc.org/docs/2.7/html/config/python-interface.html
> What does that version of spindle_speed show?
>
> (I also note that the formatting of that page has gone funny)
>


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Re: [Emc-users] Happy 82nd to me, and the latest version of my G76 tweaker for you

[John Thornton]

Thanks Gene,

Yes, I always say I don't have luck good or bad because I make my own luck.

JT

On 10/4/2016 8:51 AM, Gene Heskett wrote:
> On Tuesday 04 October 2016 09:17:47 John Thornton wrote:
>
>> Happy birthday Gene and your an inspiration for me!
>>
>> JT
> Thank you John.
>
> You I think are in the category of self-made man, which the huge majority
> of this mailing list seem to be.  And I admire all of you. We are buyers
> only in the sense that we buy the tools to get stuff made because we are
> do-ers that make the stuff we can sell to a buyer. Our hands have never
> refused to get dirty because they don't fit the tools.  I don't often
> buy the "thing", I buy the parts, or make them, to make the "thing".
> And we, all of us, should be very proud that we are of a temperament to
> grab the tools and get it done.
>
>> On 10/4/2016 7:48 AM, Gene Heskett wrote:
>>> Greetings all;
>>>
>>> I re-thought how to do a G76, both in terms of maybe hitting the
>>> correct thread od, and in how to minimize the backaway for doing
>>> internal threads to the absolute minimum. 2 attachments, one the
>>> code that made the snapshot, and the snapshot showing how it works,
>>> even for a gross adjustment.  The whole idea was to maintain the
>>> effective imaginary compound angle, hopefully resulting it a cleaner
>>> thread, as a second or third run was done to get the exact size and
>>> fit. I hope you find it usable.
>>>
>>> Cheers, Gene Heskett
>>>
>>>
>>> 
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> Cheers, Gene Heskett


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Re: [Emc-users] Happy 82nd to me, and the latest version of my G76 tweaker for you

[John Thornton]

Happy birthday Gene and your an inspiration for me!

JT

On 10/4/2016 7:48 AM, Gene Heskett wrote:
> Greetings all;
>
> I re-thought how to do a G76, both in terms of maybe hitting the correct
> thread od, and in how to minimize the backaway for doing internal
> threads to the absolute minimum. 2 attachments, one the code that made
> the snapshot, and the snapshot showing how it works, even for a gross
> adjustment.  The whole idea was to maintain the effective imaginary
> compound angle, hopefully resulting it a cleaner thread, as a second or
> third run was done to get the exact size and fit. I hope you find it
> usable.
>
> Cheers, Gene Heskett
>
>
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Re: [Emc-users] G33.1 overtravel revisited.

[John Thornton]

http://linuxcnc.org/docs/devel/html/

On 9/29/2016 4:11 PM, Gene Heskett wrote:
> On Thursday 29 September 2016 17:00:20 Gene Heskett wrote:
>
> This question may have the genesis of a clue in the Integrators Manual,
> unforch the copy available on the web page, development branch dated
> about 2 weeks ago, is not in English.  Is there any way to fix that?
>
> Thanks.
>
> Cheers, Gene Heskett


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[Emc-users] Gene I was Thinking of You

[John Thornton]

Gene I was thinking of you the whole time was putting inner tubes in the 
front tires of my Crapsman riding lawn mower (except when cursing). Yea, 
the rubberish plastic axle caps are fun to get off and even more fun to 
get back on. Of course I tried to put the tube in without taking the 
wheel off and wasted an hour trying to out think a dumb wheel but it 
kept spinning and tossing my gear off... I finally gave up and just took 
the wheel off. I even tried on the second wheel to just stuff the tube 
in without pulling the tire half off the rim... more wasted time and now 
I'm done but shot for the day!

JT

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Re: [Emc-users] Anybody have an idea how...

[John Thornton]

If you pull a big enough chip the heat goes with it... too small you 
gall. Flood does help.

JT

On 9/24/2016 1:26 PM, Gene Heskett wrote:
> On Saturday 24 September 2016 12:11:34 Jon Elson wrote:
>
>> On 09/24/2016 03:04 AM, john mcintyre wrote:
>>> Good Day All,
>>> Problems with machining sticky material.
>>> I find wd40 or crc penetrating fluid in the pressure pack and use
>>> the fine tube nozzle to direct the spray right onto the cutting tip
>>> .
>>> This is good for all sticky materials as it stops the material (soft
>>> aluminium)   building  up on the cutting edge.
>> The best fix for this is to keep the tool moving along the
>> workpiece.  Don't take a deep cut slowly, take a light cut
>> and keep the feed rate up.  This prevents localized heating
>> of the workpiece material.  Also, I don't use any plain HSS
>> tools, I use M42 or higher Cobalt HSS, which keeps a sharp
>> edge MUCH longer.  For the small stuff, I use 1/8" solid
>> carbide end mills, these work really great.
>>
>> Jon
>>
> And for alu, if the spindle can do it, all the rpms it can muster.
> This reduces the time between the passage of a cutting edge for the oxide
> to form on the freshly cut surface before the next cutting edge comes
> by, as does some spray misted, oxygen free oil (safflower is nice) to
> keep the surface sealed behind the cutting edge as much as possible.
>
> That alu oxide forms behind the cutting edge in free air in about 1
> millisecond, and its the 2nd hardest substance known to man.  And its
> that oxide that eats our tools for lunch.  Even carbide succumbs
> eventually.
>
> For long jobs where the work gets hot? A goodly portion of that heat is
> from the chemical reaction of the alu burning and forming the oxide on
> its freshly cut surface.  Reducing its access to the oxygen in the air,
> or in the water mix you may be using for coolant, will cool the
> workpiece by a considerable amount.
>
> Messy in the shop, but your tooling will thank you by lasting many times
> longer.  You don't need much oil, but you do need enough continuous air
> to feed the mister. If you can see the oil spray, thats way too much.
> An once an hour is enough to make the shop air foggy if not vented
> outside.  Hard to get off your glasses too.
>> --
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>
> Cheers, Gene Heskett


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Re: [Emc-users] Accessing a Signal using the Python HAL Interface?

[John Thornton]

You can control with the python interface.
http://linuxcnc.org/docs/2.7/html/config/python-interface.html
some examples
http://gnipsel.com/linuxcnc/gui/index.html

JT


On 9/20/2016 6:05 AM, Florian Rist wrote:
> Hi,
> I'm trying to control an axis position using an user space Python
> script, but I don't relay understand the Python hal library.
>
> So, I want to use Python to periodically set the command position of an
> axis (3 in my case) based on a sensor read out.
>
> To do so I disconnected axis.3.motor-pos-cmd from emcmot.03.pos-cmd by
> removing these lines from my .hal file:
>
> net emcmot.03.pos-cmd  <= axis.3.motor-pos-cmd
> net motor.03.pos-fb <= hpg.stepgen.03.position-fb
>
> I kept these:
>
> net emcmot.03.pos-cmd => hpg.stepgen.03.position-cmd
> net motor.03.pos-fb => axis.3.motor-pos-fb
>
>
> Now I manged to set emcmot.03.pos-cmd by calling halcmd from Python:
>
> msg = Popen('halcmd sets  emcmot.03.pos-cmd  {:f} '.format(newpos),
>   shell=True, stdout=PIPE).stdout.read()
>
> This works as expected and changes the command position, the axis starts
> to move to the new position.
>
> Now I'd like to do the same using the Python HAL interface and get rid
> of the shell command.
>
> I can create a new HAL component and a new pin but how can I access the
> existing signal? Any idea where I night be able to find an example?
>
> See you
> Florian
>
>
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Re: [Emc-users] Plasma Torch Height Control

[John Thornton]

I'd bet it does both and it may even have a output for ark ok...

JT

On 9/12/2016 8:53 AM, Alexander Brock wrote:
> On 09/11/2016 04:22 PM, John Thornton wrote:
>> Does is have connections to measure the tip voltage?
> I'm not exactly sure, it has a connection named "CNC" and it might be
> either an input for starting / stopping the cutting or an output for
> measuring tip voltage.
>
> Best Regards,
> Alexander
>
>
>
> --
>
>
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Re: [Emc-users] Plasma Torch Height Control

[John Thornton]

Does is have connections to measure the tip voltage?

JT

On 9/10/2016 8:32 PM, Alexander Brock wrote:
> On 09/10/2016 01:21 AM, John Thornton wrote:
>> What kind of plasma torch do you have?
> This one:
>
> http://www.stamos-welding.com/s-plasma-125h
>
> Best Regards,
> Alexander
>
>
>
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>
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Re: [Emc-users] Plasma Torch Height Control

[John Thornton]

What kind of plasma torch do you have?

JT

On 9/9/2016 5:59 PM, Alexander Brock wrote:
> On 09/09/2016 10:58 PM, John Thornton wrote:
>> Most LinuxCNC users use this one as do I.
>> http://mesaus.com/index.php?route=product/product&path=65&product_id=64
>> or
>> http://mesaus.com/index.php?route=product/product&path=65&product_id=65
>> depending on your plasma torch.
> Thank you for your answer :-)
>
> I have a HF arc start with pilot arc functionality, there are 3 cables:
> - thick cable for +, connected to torch
> - thinn cable for pilot arc ignition, also connected to torch
> - thick cable for -, connected to clamp which I attach to the material I
> want to cut.
>
> Do I need 2 of the AD converters to monitor cutting arc and pilot arc?
> What would be an appropriate resistor to protect the THCAD?
>
> Best Regards,
> Alexander
>
>
>
> --
>
>
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Re: [Emc-users] Plasma Torch Height Control

[John Thornton]

Most LinuxCNC users use this one as do I.
http://mesaus.com/index.php?route=product/product&path=65&product_id=64
or
http://mesaus.com/index.php?route=product/product&path=65&product_id=65
depending on your plasma torch.

JT


On 9/9/2016 1:57 PM, Alexander Brock wrote:
> Hi,
>
> I recently bought a Plasma Cutter and built a CNC router and now I want
> to add a Torch Height Control to it.
>
> I found these models, does anyone have experience with them or
> experience with other THC systems?
>
> http://www.ebay.de/itm/172288076009
> http://www.ebay.de/itm/262439946439
> http://www.cncprofi.eu/product_info.php?info=p860_profi-plasmabrenner-hoehe-controller-thc.html
>
> Best Regards,
> Alexander
>
>
>
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>
>
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Re: [Emc-users] 5i25 failure?

[John Thornton]

Glad to hear you got your shipment!

Thanks for the order
JT

On 9/9/2016 1:08 PM, John Alexander Stewart wrote:
 I'm afraid the technical details are above my pay grade. I can however
 help you with Mesa cards that relate to Linuxcnc.
>>
> Just got the 5i25/7i76 plug and go kit from Mesaus.com, shipped to Canada
> via USPS/Canada Post, and it all worked flawlessly.
>
> As an aside - I really like the USPS shipping - inexpensive, and the
> "border brokerage fees" for UPS or FedEx are incredible. This came out
> about $50.00 less via USPS.
>
> :-)
>
> John.
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Re: [Emc-users] 5i25 failure?

[John Thornton]

I have a full set of whatever the DIP chips are for the C1G. No, I'm 
just a self educated country boy...

http://cnc4pc.com/hardware/replacement-chips/c1g/set-of-buffers-and-optoisolators-for-the-c1g-board-rev-3.html

says they are buffers and optoisolators.

JT

On 9/8/2016 8:34 PM, Gene Heskett wrote:
> On Thursday 08 September 2016 18:34:33 John Thornton wrote:
>
>> Hi Gene,
>>
>> I'm afraid the technical details are above my pay grade. I can however
>> help you with Mesa cards that relate to Linuxcnc.
> Aw, gee, John. Aren't you a C.E.T. too? ;-)
>
>> My 5i25
>> http://mesaus.com/index.php?route=product/product&path=62&product_id=5
>> 1
>>
>> I also have a C1 and a C1G and a pile of optos for them I'd be very
>> willing to part with. Let me know what you need.
>>
>> JT
> What do you need for the C1G? FWIW, there no opto's on a C1G.
>
>> On 9/8/2016 4:59 PM, Gene Heskett wrote:
>>> Greetings Peter;
>>>
>>> Someone made the remark a while back that it was indeed possible to
>>> look at the output of a function, in this case the first pwmgen of a
>>> 5i25 with the prob-rfx2 firmware in it.
>>>
>>> I've had a blowup, the ultimate cause of which I have not found yet,
>>> but from the damages done to the cnc4pc C1G BoB that I have found so
>>> far, I am inclined to think the spindle motor psu, or possibly
>>> something line powered failed. The C1G damages so far found are 1
>>> blown 74ACT245N, and an almost invisible use of a ground trace on
>>> the pcb as a fuse. All the opto's in my spindle encoder would appear
>>> to have failed.  Those I have a bag of, but that pcb makes the
>>> tinfoil of a pack of smokes look like boiler plate, so I'll have
>>> something I won't call fun replaceing them.
>>>
>>> I can run the x/z motors just fine, but the limit switches would
>>> appear to be closed as those leds are at full britness when its
>>> several inches from the switches.
>>>
>>> What happened is that I had started a short program that called for
>>> a 400 rpm spindle but had neglected to engage the headstocks back
>>> gear, so the motor took off and wound out to max speed before I
>>> could hit the big red button.  And about 1/2 second before my hand
>>> hit the button, there was a pop that came from the box over the
>>> spindle motor and everything coasted to a stop.  The pop sounded
>>> like it could have been the top of one of the hexfets on the Pico
>>> Systems PWM-servo amp I am driving the motor with. But they look
>>> pristine, and all the other components in that box look good and a
>>> DVM says they are properly powered. Thinking the motor may have
>>> thrown a winding, I've looked it over and checked for shorts and
>>> come up empty so far.
>>>
>>> Back to the 5i25 question.  So I fire up the halscope and send it to
>>> gpio1.in or in_not. And try to start the spindle from axis with the
>>> cable to the bob unplugged.
>>>
>>> I am seeing a short pulse of 1 volt p-p, which becomes inverted if I
>>> look at the in_not, and trying to increase its speed has no effect.
>>> So its beginning to look as if I may have blown this 5i25.  And I've
>>> still no clue what did it.
>>>
>>> Do you concur, Peter?  In that event, I'll need three more, with low
>>> profile brackets as I believe the one I was going to run either my
>>> toy mill, or this Sheldon lathe, has a bad pin that I was using for
>>> the probe, G38.2, and it got flaky.  That was because the big dummy
>>> I can see in the mirror here forgot to run a decent ground to the
>>> frame of my G0704.  And it was pretty darned noisy when I put a
>>> scope on it.  Fixed, but too late for that 5i25. So now I need one
>>> for the little monster, one for the Sheldon, and one for my toy mill
>>> that I've not found a round tuit to do yet.
>>>
>>> Thanks Peter, or John T.
>>>
>>> Cheers, Gene Heskett
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Re: [Emc-users] 5i25 failure?

[John Thornton]

Hi Gene,

I'm afraid the technical details are above my pay grade. I can however 
help you with Mesa cards that relate to Linuxcnc.

My 5i25 
http://mesaus.com/index.php?route=product/product&path=62&product_id=51

I also have a C1 and a C1G and a pile of optos for them I'd be very 
willing to part with. Let me know what you need.

JT

On 9/8/2016 4:59 PM, Gene Heskett wrote:
> Greetings Peter;
>
> Someone made the remark a while back that it was indeed possible to look
> at the output of a function, in this case the first pwmgen of a 5i25
> with the prob-rfx2 firmware in it.
>
> I've had a blowup, the ultimate cause of which I have not found yet, but
> from the damages done to the cnc4pc C1G BoB that I have found so far, I
> am inclined to think the spindle motor psu, or possibly something line
> powered failed. The C1G damages so far found are 1 blown 74ACT245N, and
> an almost invisible use of a ground trace on the pcb as a fuse. All the
> opto's in my spindle encoder would appear to have failed.  Those I have
> a bag of, but that pcb makes the tinfoil of a pack of smokes look like
> boiler plate, so I'll have something I won't call fun replaceing them.
>
> I can run the x/z motors just fine, but the limit switches would appear
> to be closed as those leds are at full britness when its several inches
> from the switches.
>
> What happened is that I had started a short program that called for a 400
> rpm spindle but had neglected to engage the headstocks back gear, so the
> motor took off and wound out to max speed before I could hit the big red
> button.  And about 1/2 second before my hand hit the button, there was a
> pop that came from the box over the spindle motor and everything coasted
> to a stop.  The pop sounded like it could have been the top of one of
> the hexfets on the Pico Systems PWM-servo amp I am driving the motor
> with. But they look pristine, and all the other components in that box
> look good and a DVM says they are properly powered. Thinking the motor
> may have thrown a winding, I've looked it over and checked for shorts
> and come up empty so far.
>
> Back to the 5i25 question.  So I fire up the halscope and send it to
> gpio1.in or in_not. And try to start the spindle from axis with the
> cable to the bob unplugged.
>
> I am seeing a short pulse of 1 volt p-p, which becomes inverted if I look
> at the in_not, and trying to increase its speed has no effect. So its
> beginning to look as if I may have blown this 5i25.  And I've still no
> clue what did it.
>
> Do you concur, Peter?  In that event, I'll need three more, with low
> profile brackets as I believe the one I was going to run either my toy
> mill, or this Sheldon lathe, has a bad pin that I was using for the
> probe, G38.2, and it got flaky.  That was because the big dummy I can
> see in the mirror here forgot to run a decent ground to the frame of my
> G0704.  And it was pretty darned noisy when I put a scope on it.  Fixed,
> but too late for that 5i25. So now I need one for the little monster,
> one for the Sheldon, and one for my toy mill that I've not found a round
> tuit to do yet.
>
> Thanks Peter, or John T.
>
> Cheers, Gene Heskett


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Re: [Emc-users] "Probe triggered during jog"

[John Thornton]

I can't even imagine trying to do that on an iphone... you are the man Andy!

JT

On 9/7/2016 10:42 AM, Andy Pugh wrote:
>
>> On 7 Sep 2016, at 17:05, Danny Miller  wrote:
>>
>> Well, how do I modify it?  Like
> In the way I described. With links to the relevant manual pages.
> (And do you know how much fun that was on a small screen iPhone?)
>
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