Re: [Emc-users] PathPilot

2015-02-18 Thread Andreas Pettersson
Well in respect for John that i have a dialog with i think i toned it 
down quite a bit and did not
engage in a full on flame war - which i could have. ;)

One could be alot of more aggressive in this regard and contact a couple 
of organisations
that goes after companies that does this in the courts. (They are funded 
by the GPL author.)

So no i will not apologize to a company that clearly makes money off of 
GPL software
without full-filling the license agreement they accepted when using that 
piece of software
(I'm quite religious when it comes to Open Source, because i have based 
my whole career off of it)

// Andreas

andy pugh skrev den 2015-02-18 01:38:
 On 18 February 2015 at 00:28, Gene Heskett ghesk...@wdtv.com wrote:

 In any event, an apology from Andreas would not be out of line.

 Well, as YouTube comments go it was unusually complimentary :-)



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Re: [Emc-users] PRU programming on the Beagle Bone Black.

2015-02-18 Thread Gregg Eshelman
On 2/17/2015 7:12 PM, Jon Elson wrote:

 Well, the program compiles easily on Linux, or I could just
 give you an
 executable. But, if you don't have a photoplotter to run it
 on, the program
 is pretty useless. This is a 1000 x 1000 DPI raster
 photoplotter, and
 it is great for making circuit board artwork and solder
 paste stencils.
 I also use it for making the master artwork for front panel
 label
 material that is exposed with UV light.

Sounds like it would also work well for making screens for screen 
printing on paper and fabric.


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Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 Thread Belli Button
I'm more curious about the hardware, do you think they are using 5i25 from
Mesa or is it something of their own?   




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Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 Thread Andreas Pettersson
That should PCW be able to answer.. If there been a buyup of MESA cards, 
that would be big buisness i imagine. ;)

// A

Belli Button skrev den 2015-02-18 11:34:
 I'm more curious about the hardware, do you think they are using 5i25 from
 Mesa or is it something of their own?




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Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 Thread andy pugh
On 18 February 2015 at 10:50, Andrew pkm...@gmail.com wrote:

  It's MESA.
 Look at http://www.tormach.com/document_direct_download.html?doc_id=893 ,
 Figure 6


LinuxCNC _and_ hardware stepping. The customers won't know what has hit
them :-)


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Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 Thread Andrew
2015-02-18 12:34 GMT+02:00 Belli Button be...@iafrica.com:

 I'm more curious about the hardware, do you think they are using 5i25 from
 Mesa or is it something of their own?

 It's MESA.
Look at http://www.tormach.com/document_direct_download.html?doc_id=893 ,
Figure 6

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Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 Thread Belli Button
Ah, 5i25, kewl!  Does this mean we can 'borrow' their software for our own
machines??


-Original Message-
From: Andrew [mailto:pkm...@gmail.com] 
Sent: 18 February 2015 12:51
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 12:34 GMT+02:00 Belli Button be...@iafrica.com:

 I'm more curious about the hardware, do you think they are using 5i25 
 from Mesa or is it something of their own?

 It's MESA.
Look at http://www.tormach.com/document_direct_download.html?doc_id=893 ,
Figure 6

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Re: [Emc-users] motor connections

2015-02-18 Thread Andreas Pettersson
Regarding plastic connectors, neutriks work well really well. And are 
dead simple to connect.
But they arent as cheap as the aluminium cast ones with brass connectors.
And i have had plastic neutrik connectors that basicly melted  when 
exposed to coolant and Dexron 3 oil (as i use for lubricant in some 
machining).
Yeah its not instant and you will catch it and be able to change them.

//A

Gene Heskett skrev den 2015-02-18 17:40:
 On Wednesday, February 18, 2015 09:29:13 AM Dave Cole wrote:
 Those connectors are cheap!
 As I was paying north of a $8 bill for the mating pair, I did not think
 cheap, although one could call their construction less than Tiffany.

 OTOH, they have been dead utterly dependable for me.

 But I would be hesitant to use them for
 stepper connections on a machine that you need to trust.   If you get a
 bad connection it can take out your stepper driver.
 Depends on the driver, I accidentally forgot to turn the driver power off
 a year or so ago when I was mounting and connecting my A table.  That
 driver did shut down, but a power cycle restored it.  The river? Generic
 2M542.  Bulletproof seems to be a good description.  I have 6 in service,
 bought 7 so I'd have a spare.  4 years later the spare is still in its
 white box in a toolbox drawer, until I pulled it out to use as a test unit
 while setting up  testing a new, higher voltage motor psu for my toy
 mill.  There I found, using a function generator, what I believe is the
 top speed of its opto-isolators as I was able to spin an 8 wire, in
 series, 425 in/lb triple stack motor at a bit better than 3k rpms, feeding
 a nearly 375 kilobaud signal from the function generator.  I think, come
 warmer weather, that it will drive my mill a bit faster since the motor
 psu will go from 28 volts to 47 volts.  And I'll have enough spare current
 then to parallel wire those 8 wire motors too.
   
 Amphenol and others sells round plastic connectors for not that much.
 Check out Digikey, Allied, etc
 I will, because I do need a cheaper, insulated exterior solution for the
 next machine I build if I stay vertical long enough, but I also need
 something that ignores its environment. These, being all metal exterior,
 do that with no fuss.

 Some plastics and greasy stuff do not get along well.  The *styrenes in
 particular can be turned into shattered sugar just by the vapors of
 vaselene in a surprisingly short time.

 Dave

 On 2/18/2015 9:06 AM, Andreas Pettersson wrote:
 http://www.ebay.com/itm/2pcs-GX-16mm-8-Pin-Aviation-Male-Female-Plug-
 Panel-Power-Chassis-Metal-Connector-/261504110088?pt=LH_DefaultDomain
 _0hash=item3ce2dc0e08


 works quite well .. There is several other variations as well.

 kqt4a...@gmail.com skrev den 2015-02-18 14:58:
 For those who build your own controls, what connectors do you use to
 connect the motors to the control panel? I am talking steppers = 3
 amps. The store bought ones I have looked at use a DIN connector.

 Richard

 
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Re: [Emc-users] PRU programming on the Beagle Bone Black.

2015-02-18 Thread Jon Elson
On 02/18/2015 02:18 AM, Gregg Eshelman wrote:
 Sounds like it would also work well for making screens for 
 screen printing on paper and fabric.
Sure, anything that needs a high-contrast artwork will work.
I have a board that can be swapped in to generate gray-scale
output, but that would need some hacking of the PRU program to
allow it to access the main ARM memory.  Not something I've done
in quite a while.

Jon

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Re: [Emc-users] motor connections

2015-02-18 Thread Gene Heskett
On Wednesday, February 18, 2015 11:52:04 AM Andreas Pettersson wrote:
 Regarding plastic connectors, neutriks work well really well. And are
 dead simple to connect.

And as the CE at a tv station for the last 18 years I worked, I have 
plenty of experience with the neutriks XLR style connector in 3 and 4 pin 
varieties.  Hand such a connector to our news dept people and it will come 
home from the first interview with the latching tab demolished.

But in fairness to neutrik, when news complained it won't stay plugged in 
now, my reply was that I didn't break it, and all you to do to not break 
it was learn to press the latch.  It took me about a year and at least a 
24 pack of those connectors to get those monkeys potty trained.  Once 
potty trained of course then they head off to a bigger market  I had to 
start all over.  One of those thankless tasks that is the Chief Engineers 
lot in life I guess.  FWIW I will not discuss the SwitchCraft version of 
that connector since those I needed to buy by the grocery sack until I 
found the neutrik.  And before someone yells its cheap at 3 or 4 bucks, is 
your time worth when the have to be replaced at least guarterly on every 
cable in the place that uses them.  That was 10-12 in the studio, and 2 or 
3 in every news car, with at least 6 cars on the road, more on high school 
game nights.

But as far as cable retention went, its the absolute tops in the business.  
The plastic pieces that make up the cable clamp were however, about 1/2 
the reason the whole connector was replaced.  The 3 jaw nylon bits were 
ok, but the plastic nut that held the rubber stress relief, and drove 
those nylon parts, was a major breakage point as they aged.  I think it 
embrittled with old age. The only thing puny about the latch was its 
ability to get caught on a passing door frame and jerked out or broken off 
when the monkeys with a journalism degree just jerked on it instead of 
going back and lifting the end of the latch back out of the door frame or 
off whatever it had caught on.

 But they arent as cheap as the aluminium cast ones with brass
 connectors. And i have had plastic neutrik connectors that basicly
 melted  when exposed to coolant and Dexron 3 oil (as i use for
 lubricant in some machining).
 Yeah its not instant and you will catch it and be able to change them.
 
That is apparently not a huge concern for the CB mic connector I am using.

But I will check digi-key for look-a-likes before I order again.
Cheers, Gene Heskett
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Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 Thread Bruce Layne
Hi Erik,

You, and at least one other person, are definitely missing my point.  
I'll take the blame for not expressing myself properly. I'll try again.

I am not disparaging Tormach.  At all.  As I've said, I believe their 
switch to LinuxCNC will be good for them and for their customers.  In 
fact, I have publicly suggested this in the past on several occasions.  
I've even tried in vain to convince Tormach owners who were dissatisfied 
with Mach to install LinuxCNC on their own.  I also think Tormach and 
their customers will be very well served by MESA Electronics hardware.

My comments that apparently seemed so negative to you were not intended 
to relate to the legal issue of who owned the code. Obviously, if they 
paid for the code, they own the code, regardless of whether an employee 
or an off-site contractor wrote it.  I've written a fair amount of code 
as an off-site contactor, and I certainly wouldn't belittle that 
contribution.  I did not say one word about the legal aspects, licensing 
requirements, etc.  I don't know what Tormach might be legally required 
to do, and I'd greatly prefer to leave that issue for others to resolve.

I also had very little to say about what could be considered the 
ethical aspect... what they should do with the code they paid to 
have developed.  Others were hurling pejoratives and mild profanities, 
but not me.  I feel no hostility toward Tormach. They're helping a lot 
of people get into small scale machining who otherwise wouldn't.  How is 
that not a good thing?  I see Tormach as good, and LinuxCNC on Tormach 
as better.  I did say that I hoped they'd send some of that goodness 
back to the open source community so we could all benefit, but that 
wasn't a criticism.  That's just me being optimistic.

Early on, I did say that I doubted a lot of that code will be open 
source, and frankly I still do for the user interface and conversational 
wizards.  They made a substantial investment to develop some of that 
code and I think they'd probably like to keep some of that user 
interface as a proprietary Tormach look and feel. If so, that's a shame, 
because the direction they took is very much along the direction that 
I'd like to see LinuxCNC progress, but I didn't have their resources 
(financial motivation) to help move it in that direction.  If someone in 
the LinuxCNC community develops a case of PathPilot envy, someone will 
write an open source version.

Part of the reason that people were jumping to false conclusions about 
Tormach not giving back to the community is the result of how tight 
lipped they were about it.  They seem to be downplaying the open source 
aspect.  I'm spit balling here, but it looks to me as if they were 
almost forced to choose LinuxCNC because it's technically better, and 
they might be feeling some corporate reluctance about going down the 
Mach path for so long and taking their customers with them?  Nobody 
likes to admit a mistake.  Or maybe they don't want to encourage 
potential customers to buy a small 1990s era VMC with outdated controls 
by telling them how easy it is to convert it to LinuxCNC?

If there was any animosity in my email, it was very minor, and nothing 
but the good natured engineer versus marketing clash.  I'm an engineer, 
and the product is what matters.  Marketing people believe how the 
product is presented is what matters.  Sadly, I think the marketing 
people are almost always right when the criteria is measured based on 
what makes a financially successful product.

I'm curious how much Tormach developed in house not for legal reasons, 
or ethical reasons, or because I'm a hater.  I'm curious because the 
marketing part of this seems weird to me and I'd like to understand it.  
If I was doing the Tormach marketing, I'd play up the Free Open Source 
Software aspect, brag about giving back to the community, while 
expounding about the NEW  IMPROVED hard realtime reliability, the 
enhanced features, etc.  Instead, they seem to be acting as if they were 
caught kissing their cousin.


Bruce





On 02/18/2015 07:49 AM, Erik Christiansen wrote:
 On 18.02.15 06:44, Bruce Layne wrote:
 They do admit that LinuxCNC is the underlying software, but claim they
 made substantial improvements, when they apparently paid for open source
 code to be developed by someone else.
 No, it makes no difference whether a contractor works on-site or off -
 copyright belongs to the employer. As the paid work has been made
 available to LinuxCNC, IIUC, then all rational and reasonable open
 source hopes and expectations have been met, I believe. It seems petty
 and irrational to deny the substantial contribution they have in fact
 made. Funding a skilled off-site developer (sometimes from the OS
 community) to improve OS software is not common. (E.g. Nick Clifton has
 done a lot of v850 work on binutils and gcc for NEC, AFAIR.)

 The gift is in fact threefold, as the paid OS developer's skills are
 also developed by the 

Re: [Emc-users] PathPilot

2015-02-18 Thread Andrew
2015-02-18 2:24 GMT+02:00 Sebastian Kuzminsky s...@highlab.com
https://mail.google.com/mail/u/0/?view=cmfs=1tf=1to=s...@highlab.com:

 Well, the new trajectory planner is huge.  And it was done quietly,
 without Tormach publicly taking credit for it, which has left people not
 realizing the contribution Tormach has made.

 The new TP wasn't so nesessary for a lathe, right?
Looks like Tormach is going to use LinuxCNC for their mills too.

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Re: [Emc-users] motor connections

2015-02-18 Thread Greg Bentzinger
I use a DB9 with shielded cable on pin 5 and the 4 drive lines each using an 
upper and lower pin in parallel as redundant connections and less current 
density. Cheap enough, readily available on short notice. Might try a DB15 with 
dual wires for motor + encoder signals. (That would be a {2 row} game port not 
a {3 row} VGA type connectors.)

I used XLR until a bad connection blew a driver chip.

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Re: [Emc-users] motor connections

2015-02-18 Thread Andy Pugh



 On 18 Feb 2015, at 18:48, Gene Heskett ghesk...@wdtv.com wrote:
 
 I have 
 plenty of experience with the neutriks XLR style connector in 3 and 4 pin 
 varieties.

I was suggesting Speakon which has a bayonet latch. Very solid and breaks 
contact before withdrawal. 


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Re: [Emc-users] motor connections

2015-02-18 Thread andy pugh
On 19 February 2015 at 04:01, richsh...@comcast.net wrote:

 Avoid those Molex connectors! Read the data sheet! Not guaranteed to work
 after 25 mate/demate cycles!


If I am that indecisive about where my motors connect I deserve to fail :-)


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Re: [Emc-users] motor connections

2015-02-18 Thread rayj
I have used regular heat shrink and shaved small chips, almost filings, 
of hot melt glue into them.  I shrink 1 end, fill with fine shavings, 
then work my way along and end up with a little melted glue being 
squeezed the other end when closes.


Raymond Julian
Kettle River, MN

The things we admire in men, kindness and generosity, openness, honesty, 
understanding and feeling are the concomitants of failure in our system. 
And those traits we detest, sharpness, greed, acquisitiveness, meanness, 
egotism and self-interest are the traits of success. And while men 
admire the quality of the first they love the produce of the second. 
-John Steinbeck, novelist, Nobel laureate (1902-1968)

On 02/18/2015 08:56 PM, Gene Heskett wrote:
 On Wednesday, February 18, 2015 09:38:34 PM andy pugh wrote:
 On 19 February 2015 at 02:32, Bruce Layne
 linux...@thinkingdevices.com

 wrote:
 If I needed the soldered connections to survive coolant, I'd slide
 the heat shrink over uncured five minute epoxy and shrink the tubing
 to squeeze out the epoxy and accelerate the epoxy cure,

 Why not use glue-filled heat-shrink?
 http://uk.rs-online.com/web/p/heat-shrink-cold-shrink-sleeves/1573824/
 as a random example.

 Neat stuff Andy.  But I don't recall seeing it locally, like at Radio
 Shack. Looks like I'll have to order it online.  Does it keep well unused?

 Cheers, Gene Heskett


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Re: [Emc-users] motor connections

2015-02-18 Thread Gene Heskett
On Wednesday, February 18, 2015 10:15:03 PM andy pugh wrote:
 On 19 February 2015 at 02:56, Gene Heskett ghesk...@wdtv.com wrote:
  Neat stuff Andy.  But I don't recall seeing it locally, like at Radio
  Shack. Looks like I'll have to order it online.  Does it keep well
  unused?
 
 As far as I know it keeps indefinitely, and I can buy it at a choice of
 3 Maplin stores within 20 miles of here.

Technically, we are turning into a vast non-tehcnical wasteland on this 
side of the pond.  Ebay has effectively become the source but you have to 
search for the jewels, their search engine sucks dead toads thru soda 
straws. A right pain in the ass when a search for milling machine 
returns 97% trash, 20% of which has zip to do with a milling machine.

We have a radio shack here, but the parts stock is 20% of what it was a 
year ago. 80% of whats on the walls today will wind up being recycled. It 
will not have a radio shack sign on it by 1 May from what I hear.

They do have some arduino stuff, but at 3 to 5x what I can get it for on 
ebay.

Cheers, Gene Heskett
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Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 Thread Bruce Layne
The way the upgrades were described, the hardware sounded very MESA-ish, 
so I wasn't surprised to see that it was.  However, Tormach does seem to 
be interested in conveying the impression that the software and hardware 
were created by Tormach.

http://www.tormach.com/blog/pathpilot-beta-testing

Our own development work began in earnest 4 years ago. During that time, 
we’ve
made substantial improvements to the underlying source code to make 
PathPilot a
viable commercial product. These include a revamped trajectory planner,
improvements to the G-Code interpreter, a new operator interface, onboard
conversational programming, and a host of other enhancements.

PathPilot, however, is not just software. It is also new dedicated hardware
“inside the box” designed specifically for motion control, along with 
complete
documentation, and end-user support. Unlike our previous generation 
controller,
PathPilot is a fully integrated and purpose-designed CNC motion control 
platform
for Tormach products.


They do admit that LinuxCNC is the underlying software, but claim they 
made substantial improvements, when they apparently paid for open source 
code to be developed by someone else.  That's possibly splitting hairs, 
but I'm not sure if I'm the one splitting hairs, or the Tormach 
marketing department.  In the second paragraph quoted above, they imply 
that they developed new dedicated hardware that is a fully integrated 
and purpose-designed CNC motion control platform for Tormach products.  
Given the availability of high quality and low cost off-the-shelf 
hardware, they'd be crazy to develop their own.  I suspect their 
contribution is the complete documentation, and end-user support.

Tormach users will be very well served by LinuxCNC software and MESA 
Electronics hardware, but I think it's interesting that Tormach seems to 
feel the need to imply that they did the development. They're a fairly 
small company and they do a lot of good development, but they must feel 
that they can't allow a market impression that they are integrators, 
putting together tools that others provide.  Does anyone know if they 
created their nice looking graphical front end, or did they subcontract 
that as well?  It's fine by me either way, but I am curious.

Maybe Brian Williams took a job as the marketing director at Tormach.  
If they blog about their helicopter being shot down behind enemy lines, 
and using a PCNC 770 to manufacture the parts they needed to repair the 
helicopter, I'm calling BS.  :-)





On 02/18/2015 05:50 AM, Andrew wrote:
 2015-02-18 12:34 GMT+02:00 Belli Button be...@iafrica.com:

 I'm more curious about the hardware, do you think they are using 5i25 from
 Mesa or is it something of their own?

 It's MESA.
 Look at http://www.tormach.com/document_direct_download.html?doc_id=893 ,
 Figure 6

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Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 Thread Dave Cole
On 2/18/2015 6:44 AM, Bruce Layne wrote:
 Does anyone know if they
 created their nice looking graphical front end, or did they subcontract
 that as well?  It's fine by me either way, but I am curious.

There really is no difference between the two.   I subcontract to other 
companies who sell the software I develop as their own.
They legally own the software, so it is their software to sell. Whether 
the software has been written by a subcontractor of direct employee is 
pretty much irrelevant.

Dave

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Re: [Emc-users] motor connections

2015-02-18 Thread Gene Heskett
On Wednesday, February 18, 2015 08:58:20 AM kqt4a...@gmail.com wrote:
 For those who build your own controls, what connectors do you use to
 connect the motors to the control panel? I am talking steppers = 3
 amps. The store bought ones I have looked at use a DIN connector.
 
 Richard
 
I've tried several, even molex's but keeping flying swarf out of them is 
tricky unless backfilled with a silicon caulk, so I have, in my own 
lashups, been using the 4 pin connector thats been in common use on CB 
radios for the microphone input.  It has a locking ring that screws 
together, and decent rear of the connector sealing seems more that 
adequate for the job.

This also brings in cabling considerations, and I am totally sold on the 
Clark Wire  Cable's version of Beldens Star_Quad, sold for microphone 
cable as a dual twisted parallel extremely low noise mic cable.  Available 
in gauges as large as 22 IIRC, its more than capable of handling the 
nominally 3 amps my steppers use.  Available in a multitude of jacket 
colors, easily 10x as flexible as the Belden offering, I have some of it 
on my toy mill that is sliding back and forth in the mix of cutting oils, 
swarf  what have you on the top of the 60 yo steel kitchen base cabinet 
that mill is sitting on.  Dirty, greasy, but seemingly un-affected by its 
environment as its been doing it for nearly a decade now.

I first became acquainted with them when they sent me some foot long 
samples of their video cable. I was at the time fighting with several 
miles of a West Penn cable whose shielding was 50  db at best, 20 if 
sloppily terminated with a Cambridge screw on BNC connector.  With a 
crimp on connector properly installed, that cable was well north of 110db 
worth of shielding and all my crosstalk problems just vanished.  And its 
flexible, just laying there like a well cooked strand of spaghetti.

Cheers, Gene Heskett
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Re: [Emc-users] motor connections

2015-02-18 Thread Andreas Pettersson
http://www.ebay.com/itm/2pcs-GX-16mm-8-Pin-Aviation-Male-Female-Plug-Panel-Power-Chassis-Metal-Connector-/261504110088?pt=LH_DefaultDomain_0hash=item3ce2dc0e08


works quite well .. There is several other variations as well.

kqt4a...@gmail.com skrev den 2015-02-18 14:58:
 For those who build your own controls, what connectors do you use to
 connect the motors to the control panel? I am talking steppers = 3 amps.
 The store bought ones I have looked at use a DIN connector.

 Richard

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Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 Thread sam sokolik
I had/have been doing a lot of testing of the new trajectory planner of 
Robs.  (I didn't know or was told that he was working for Tormach - I 
was upset for about 2 seconds.. :) )  I don't know how they found Rob 
but wow - they sure picked the right guy to do it.  The TP re-write was 
huge and started Nov 2013.  (and was required to compete with mach3 in 
speed)

The new TP is a big improvement on the previous planner.  I am glad 
Tormach was open to pushing it back to the community.

I don't know enough about the licensing to weigh in - I just hope the 
'right thing' is done. (and 'most' people are happy :) )

So we have a new n-lookahead TP and Tormach has a control that they can 
manage 100%.

(seems like a win win so far..)

sam




On 2/18/2015 5:11 AM, andy pugh wrote:
 On 18 February 2015 at 10:50, Andrew pkm...@gmail.com wrote:

 It's MESA.
 Look at http://www.tormach.com/document_direct_download.html?doc_id=893 ,
 Figure 6

 LinuxCNC _and_ hardware stepping. The customers won't know what has hit
 them :-)




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[Emc-users] motor connections

2015-02-18 Thread kqt4at5v
For those who build your own controls, what connectors do you use to 
connect the motors to the control panel? I am talking steppers = 3 amps.
The store bought ones I have looked at use a DIN connector.

Richard

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Re: [Emc-users] motor connections

2015-02-18 Thread Dave Cole
Those connectors are cheap!   But I would be hesitant to use them for 
stepper connections on a machine that you need to trust.   If you get a 
bad connection it can take out your stepper driver.
Amphenol and others sells round plastic connectors for not that much.  
Check out Digikey, Allied, etc

Dave



On 2/18/2015 9:06 AM, Andreas Pettersson wrote:
 http://www.ebay.com/itm/2pcs-GX-16mm-8-Pin-Aviation-Male-Female-Plug-Panel-Power-Chassis-Metal-Connector-/261504110088?pt=LH_DefaultDomain_0hash=item3ce2dc0e08


 works quite well .. There is several other variations as well.

 kqt4a...@gmail.com skrev den 2015-02-18 14:58:
 For those who build your own controls, what connectors do you use to
 connect the motors to the control panel? I am talking steppers = 3 amps.
 The store bought ones I have looked at use a DIN connector.

 Richard

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Re: [Emc-users] motor connections

2015-02-18 Thread andy pugh
On 18 February 2015 at 13:58, kqt4a...@gmail.com wrote:

 For those who build your own controls, what connectors do you use to
 connect the motors to the control panel? I am talking steppers = 3 amps.


I have used the connectors suggested by Andreas, but my preferred conectors
are
http://www.maplin.co.uk/p/neutrik-nl4fx-4-pole-speakon-connector-n22aj

250V / 40A and not too expensive.

I have used them for 3-phase motors too.

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Re: [Emc-users] PathPilot

2015-02-18 Thread Gene Heskett
On Wednesday, February 18, 2015 03:00:31 AM Andreas Pettersson wrote:
 Well in respect for John that i have a dialog with i think i toned it
 down quite a bit and did not
 engage in a full on flame war - which i could have. ;)
 
 One could be alot of more aggressive in this regard and contact a
 couple of organisations
 that goes after companies that does this in the courts. (They are
 funded by the GPL author.)
 
 So no i will not apologize to a company that clearly makes money off of
 GPL software
 without full-filling the license agreement they accepted when using
 that piece of software
 (I'm quite religious when it comes to Open Source, because i have based
 my whole career off of it)
 
 // Andreas
 
 andy pugh skrev den 2015-02-18 01:38:
  On 18 February 2015 at 00:28, Gene Heskett ghesk...@wdtv.com wrote:
  In any event, an apology from Andreas would not be out of line.
  
  Well, as YouTube comments go it was unusually complimentary :-)

I am not sure how to counter this and your emphasis on the GPL.
I think your understanding of GPL seems to preclude any consideration of 
the fact that in LinuxCNC's rather lengthy history, it did not start out 
as GPL, because it started well before the GPL even existed.

There was a time, back up the log a ways now, what 30 years?, when what 
has become LinuxCNC was not GPL, but was what N.I.S.T. released as I 
believe, Public Domain to get the technology kick-started into american 
manufacturing.  That, to my knowledge (I can be educated in that regard), 
has no carved in the law release source rules that the GPL does have.  
Improvements in that original code base, compiled into a searchable patch 
database would by now be several gigabytes, and many of those improvements 
have carried a GPL into some of it, but not all.  There is an effort being 
made to excise the non-gpl bits and pieces being made, but Seb K. could 
probably offer more accurate comments regarding the status of that effort 
since I'm not privy to that discussion.

In any event, I still think you paint them (Tormach) with much too black a 
brush.

One of the things I have learned in my 80 years, is that the hand that 
feeds you should be thanked. The OP in this thread was not in that 
category.

I'll get me coat now.

Cheers, Gene Heskett
-- 
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Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 Thread Todd Zuercher
If their company is anything like most, the person who wrote the add you were 
quoting, had nothing to do with putting together the controller package (and 
probably knows little about it) and through miscommunications, and creative 
license, some half truths, crept in.  I am sure the errors in the add were 
completely unintentional.  And I would hope that they would be corrected once 
they are brought to the attention of someone with the authority to fix them.

- Original Message -
From: Bruce Layne linux...@thinkingdevices.com
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Sent: Wednesday, February 18, 2015 6:44:15 AM
Subject: Re: [Emc-users] PathPilot (what hardware?)

The way the upgrades were described, the hardware sounded very MESA-ish, 
so I wasn't surprised to see that it was.  However, Tormach does seem to 
be interested in conveying the impression that the software and hardware 
were created by Tormach.

http://www.tormach.com/blog/pathpilot-beta-testing

Our own development work began in earnest 4 years ago. During that time, 
we’ve
made substantial improvements to the underlying source code to make 
PathPilot a
viable commercial product. These include a revamped trajectory planner,
improvements to the G-Code interpreter, a new operator interface, onboard
conversational programming, and a host of other enhancements.

PathPilot, however, is not just software. It is also new dedicated hardware
“inside the box” designed specifically for motion control, along with 
complete
documentation, and end-user support. Unlike our previous generation 
controller,
PathPilot is a fully integrated and purpose-designed CNC motion control 
platform
for Tormach products.


They do admit that LinuxCNC is the underlying software, but claim they 
made substantial improvements, when they apparently paid for open source 
code to be developed by someone else.  That's possibly splitting hairs, 
but I'm not sure if I'm the one splitting hairs, or the Tormach 
marketing department.  In the second paragraph quoted above, they imply 
that they developed new dedicated hardware that is a fully integrated 
and purpose-designed CNC motion control platform for Tormach products.  
Given the availability of high quality and low cost off-the-shelf 
hardware, they'd be crazy to develop their own.  I suspect their 
contribution is the complete documentation, and end-user support.

Tormach users will be very well served by LinuxCNC software and MESA 
Electronics hardware, but I think it's interesting that Tormach seems to 
feel the need to imply that they did the development. They're a fairly 
small company and they do a lot of good development, but they must feel 
that they can't allow a market impression that they are integrators, 
putting together tools that others provide.  Does anyone know if they 
created their nice looking graphical front end, or did they subcontract 
that as well?  It's fine by me either way, but I am curious.

Maybe Brian Williams took a job as the marketing director at Tormach.  
If they blog about their helicopter being shot down behind enemy lines, 
and using a PCNC 770 to manufacture the parts they needed to repair the 
helicopter, I'm calling BS.  :-)





On 02/18/2015 05:50 AM, Andrew wrote:
 2015-02-18 12:34 GMT+02:00 Belli Button be...@iafrica.com:

 I'm more curious about the hardware, do you think they are using 5i25 from
 Mesa or is it something of their own?

 It's MESA.
 Look at http://www.tormach.com/document_direct_download.html?doc_id=893 ,
 Figure 6

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Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 Thread Dave Cole
Sam...

Remember the email list conversations that Rob and you had with the 
Mach3 crew a while back?
That now puts those conversations in an entirely different light.

If you want a great discount on a slant back lathe or small mill, now 
might be the right time to speak up!  :-)

Dave



On 2/18/2015 8:38 AM, sam sokolik wrote:
 I had/have been doing a lot of testing of the new trajectory planner of
 Robs.  (I didn't know or was told that he was working for Tormach - I
 was upset for about 2 seconds.. :) )  I don't know how they found Rob
 but wow - they sure picked the right guy to do it.  The TP re-write was
 huge and started Nov 2013.  (and was required to compete with mach3 in
 speed)

 The new TP is a big improvement on the previous planner.  I am glad
 Tormach was open to pushing it back to the community.

 I don't know enough about the licensing to weigh in - I just hope the
 'right thing' is done. (and 'most' people are happy :) )

 So we have a new n-lookahead TP and Tormach has a control that they can
 manage 100%.

 (seems like a win win so far..)

 sam




 On 2/18/2015 5:11 AM, andy pugh wrote:
 On 18 February 2015 at 10:50, Andrew pkm...@gmail.com wrote:

 It's MESA.
 Look at http://www.tormach.com/document_direct_download.html?doc_id=893 ,
 Figure 6

 LinuxCNC _and_ hardware stepping. The customers won't know what has hit
 them :-)



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Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 Thread Erik Christiansen
On 18.02.15 06:44, Bruce Layne wrote:
 They do admit that LinuxCNC is the underlying software, but claim they 
 made substantial improvements, when they apparently paid for open source 
 code to be developed by someone else.

No, it makes no difference whether a contractor works on-site or off -
copyright belongs to the employer. As the paid work has been made
available to LinuxCNC, IIUC, then all rational and reasonable open
source hopes and expectations have been met, I believe. It seems petty
and irrational to deny the substantial contribution they have in fact
made. Funding a skilled off-site developer (sometimes from the OS
community) to improve OS software is not common. (E.g. Nick Clifton has
done a lot of v850 work on binutils and gcc for NEC, AFAIR.)

The gift is in fact threefold, as the paid OS developer's skills are
also developed by the project, and it helps to keep the wolf from the
door. (Or maybe better still, pays for new toys.)

...

 Tormach users will be very well served by LinuxCNC software and MESA 
 Electronics hardware, but I think it's interesting that Tormach seems to 
 feel the need to imply that they did the development.

If they paid for it, then they did it. (They own the copyright, and
their copyright assignment is required before it can become OS in
LinuxCNC. And I appreciate their generosity.)

 They're a fairly small company and they do a lot of good development,
 but they must feel that they can't allow a market impression that they
 are integrators, putting together tools that others provide.  Does
 anyone know if they created their nice looking graphical front end, or
 did they subcontract that as well?  It's fine by me either way, but I
 am curious.

Not just curious, but remarkably negative about a substantial and useful
contribution to the LinuxCNC community, AIUI. Do you also expect Lenovo
or Dell to shout the names of manufacturers of their system components,
whether interface cards or hard drives, or is this disdain targeted?

 Maybe Brian Williams took a job as the marketing director at Tormach.  
 If they blog about their helicopter being shot down behind enemy lines, 
 and using a PCNC 770 to manufacture the parts they needed to repair the 
 helicopter, I'm calling BS.  :-)

When you invent such BS, then whose BS is it?

It seems unreasonable for any CNC vendor to advertise for suppliers of
components, whether power cords, mother boards, or interface cards, when
what they sell is a performance package. It is often an OS licencing
requirement that the software application's presence in the marketed
product be stated, but that is rarely so for purchased components.

Your remarkably negative take on this collaborative contribution to OSS
surprises me. Would you rather have them use Mach3, and leave LinuxCNC
to its own devices?

Erik

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Re: [Emc-users] motor connections

2015-02-18 Thread Gene Heskett
On Wednesday, February 18, 2015 09:29:13 AM Dave Cole wrote:
 Those connectors are cheap! 

As I was paying north of a $8 bill for the mating pair, I did not think 
cheap, although one could call their construction less than Tiffany.

OTOH, they have been dead utterly dependable for me.

 But I would be hesitant to use them for
 stepper connections on a machine that you need to trust.   If you get a
 bad connection it can take out your stepper driver.

Depends on the driver, I accidentally forgot to turn the driver power off 
a year or so ago when I was mounting and connecting my A table.  That 
driver did shut down, but a power cycle restored it.  The river? Generic 
2M542.  Bulletproof seems to be a good description.  I have 6 in service, 
bought 7 so I'd have a spare.  4 years later the spare is still in its 
white box in a toolbox drawer, until I pulled it out to use as a test unit 
while setting up  testing a new, higher voltage motor psu for my toy 
mill.  There I found, using a function generator, what I believe is the 
top speed of its opto-isolators as I was able to spin an 8 wire, in 
series, 425 in/lb triple stack motor at a bit better than 3k rpms, feeding 
a nearly 375 kilobaud signal from the function generator.  I think, come 
warmer weather, that it will drive my mill a bit faster since the motor 
psu will go from 28 volts to 47 volts.  And I'll have enough spare current 
then to parallel wire those 8 wire motors too.
 
 Amphenol and others sells round plastic connectors for not that much.
 Check out Digikey, Allied, etc

I will, because I do need a cheaper, insulated exterior solution for the 
next machine I build if I stay vertical long enough, but I also need 
something that ignores its environment. These, being all metal exterior, 
do that with no fuss.

Some plastics and greasy stuff do not get along well.  The *styrenes in 
particular can be turned into shattered sugar just by the vapors of 
vaselene in a surprisingly short time.

 Dave
 
 On 2/18/2015 9:06 AM, Andreas Pettersson wrote:
  http://www.ebay.com/itm/2pcs-GX-16mm-8-Pin-Aviation-Male-Female-Plug-
  Panel-Power-Chassis-Metal-Connector-/261504110088?pt=LH_DefaultDomain
  _0hash=item3ce2dc0e08
  
  
  works quite well .. There is several other variations as well.
  
  kqt4a...@gmail.com skrev den 2015-02-18 14:58:
  For those who build your own controls, what connectors do you use to
  connect the motors to the control panel? I am talking steppers = 3
  amps. The store bought ones I have looked at use a DIN connector.
  
  Richard
  
  
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Re: [Emc-users] motor connections

2015-02-18 Thread andy pugh
On 18 February 2015 at 21:46, Greg Bentzinger skullwo...@yahoo.com wrote:

 I use a DB9 with shielded cable on pin 5 and the 4 drive lines each using
 an upper and lower pin in parallel as redundant connections and less
 current density.


DB9 actually has a surprising current carrying capacity per pin. I think
some are 9A.

For my A-axis servos I use:
http://uk.rs-online.com/web/p/solder-d-sub-connectors/5427573/

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Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 Thread andy pugh
On 18 February 2015 at 19:35, Bruce Layne linux...@thinkingdevices.com
wrote:

 If someone in
 the LinuxCNC community develops a case of PathPilot envy, someone will
 write an open source version.


http://www.linuxcnc.org/index.php/english/forum/41-guis/26550-lathe-macros

:-)


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Re: [Emc-users] PathPilot

2015-02-18 Thread andy pugh
On 18 February 2015 at 21:56, Andrew pkm...@gmail.com wrote:

 The new TP wasn't so nesessary for a lathe, right?
 Looks like Tormach is going to use LinuxCNC for their mills too.


The Tormach web-page and the video are both clearly showing mill configs.

I think that the lathe has been on LinuxCNC for a while.

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Re: [Emc-users] PathPilot

2015-02-18 Thread Andreas Pettersson
The lathe was linuxcnc from day one, it was shipped with it even.


andy pugh skrev den 2015-02-19 00:03:
 On 18 February 2015 at 21:56, Andrew pkm...@gmail.com wrote:

 The new TP wasn't so nesessary for a lathe, right?
 Looks like Tormach is going to use LinuxCNC for their mills too.

 The Tormach web-page and the video are both clearly showing mill configs.

 I think that the lathe has been on LinuxCNC for a while.



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Re: [Emc-users] motor connections

2015-02-18 Thread andy pugh
On 19 February 2015 at 02:32, Bruce Layne linux...@thinkingdevices.com
wrote:

 If I needed the soldered connections to survive coolant, I'd slide
 the heat shrink over uncured five minute epoxy and shrink the tubing to
 squeeze out the epoxy and accelerate the epoxy cure,


Why not use glue-filled heat-shrink?
http://uk.rs-online.com/web/p/heat-shrink-cold-shrink-sleeves/1573824/
as a random example.

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Re: [Emc-users] motor connections

2015-02-18 Thread Bruce Layne

 Using acid free caulk I hope? If it smells like vinegar, it has acetic
 acid in it that will corrode electronics.

The acetic acid in RTV silicone cures by evaporation, typically in a few 
hours.  Afterward, it's fairly inert.  I don't use it for electronics, 
but the only time I've seen it cause problems is when someone used it as 
a potting compound and sealed it up in PVC where it couldn't cure and 
the acid attacked some capacitors.

Digi-Key sells watertight connectors that could be used on motor leads, 
and you might even find some electrical connectors intended for boat 
trailers.

When I'm wiring stepper motors, I just solder the leads and heat shrink 
them, with a couple of increasingly longer lengths of heat shrink over 
the bundle for strain relief.  It's cheap, low profile, snag resistant, 
and the electrical connections are reliable if the soldered joints 
aren't flexing.  If they need to flex, crimped connections on stranded 
wire are much better.  I don't need to replace stepper motors very often 
(hopefully never), and if I do, I can cut open the soldered connections 
and resolder the leads faster than I can find connectors, crimpers, 
etc.  If I needed the soldered connections to survive coolant, I'd slide 
the heat shrink over uncured five minute epoxy and shrink the tubing to 
squeeze out the epoxy and accelerate the epoxy cure, but that's not 
going to be unsoldered.  Repair is by replacement.  Leave a little extra 
cable so you don't need to run a new cable if the motor is replaced.
/
//My favorite programming language is SOLDER.//
//   - Steve Ciarcia, Byte //magazine, circa 1979//
//
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Re: [Emc-users] motor connections

2015-02-18 Thread Gene Heskett
On Wednesday, February 18, 2015 09:15:43 PM Gregg Eshelman wrote:
 On 2/18/2015 7:48 AM, Gene Heskett wrote:
  On Wednesday, February 18, 2015 08:58:20 AM kqt4a...@gmail.com wrote:
  For those who build your own controls, what connectors do you use to
  connect the motors to the control panel? I am talking steppers = 3
  amps. The store bought ones I have looked at use a DIN connector.
  
  Richard
  
  I've tried several, even molex's but keeping flying swarf out of them
  is tricky unless backfilled with a silicon caulk,
 
 Using acid free caulk I hope? If it smells like vinegar, it has acetic
 acid in it that will corrode electronics.

:) BTDT. A Well known caution Gregg.  What ever I used at the time had no 
vinegar stink to it. But I didn't use it for long because the cable I was 
using was as stiff as a piece of 1/4 tubing, and kept stressing the 
solder joints buried in the stuff, so I changed it all to the 4 pin screw 
together plug, and half a small roll of Suzan Clarks Star-quad cable.  
That combo has worked for nearly a decade now.

Cheers Gregg, Gene Heskett
-- 
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Re: [Emc-users] PathPilot

2015-02-18 Thread Gregg Eshelman
On 2/18/2015 7:07 AM, Gene Heskett wrote:

 In any event, I still think you paint them (Tormach) with much too black a
 brush.

The company that deserves that is Makerbot. Another one is RAMBUS, where 
when Intel, Micron and some other companies went together to create a 
new computer memory standard to replace SDRAM, one member sneakily filed 
patents and trademarks on it all, then proceeded to file lawsuits.


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Re: [Emc-users] PathPilot

2015-02-18 Thread Gene Heskett
On Wednesday, February 18, 2015 08:50:21 PM Gregg Eshelman wrote:
 On 2/18/2015 7:07 AM, Gene Heskett wrote:
  In any event, I still think you paint them (Tormach) with much too
  black a brush.
 
 The company that deserves that is Makerbot. Another one is RAMBUS,
 where when Intel, Micron and some other companies went together to
 create a new computer memory standard to replace SDRAM, one member
 sneakily filed patents and trademarks on it all, then proceeded to
 file lawsuits.
 
Quite familiar with the RAMBUS debacle, but MakerBot seems to be a new 
entry in the extra rectums dept.  Links plz, I like to stay reasonably up 
to date.  But if no great coverage on slashdot, I've likely slept thru it. 
My fault of course, but... ;-) 

Thanks Gregg.

Cheers, Gene Heskett
-- 
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 soap, ballot, jury, and ammo. Please use in that order.
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Genes Web page http://geneslinuxbox.net:6309/gene

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[Emc-users] motor connections

2015-02-18 Thread richshoop
Avoid those Molex connectors! Read the data sheet! Not guaranteed to work after 
25 mate/demate cycles! The AMP CPC family of connectors have something of a 
chance of surviving, and have contact sets that can handle the loads expected. 

- Original Message -

From: emc-users-requ...@lists.sourceforge.net 
To: emc-users@lists.sourceforge.net 
Sent: Wednesday, February 18, 2015 6:51:21 PM 
Subject: Emc-users Digest, Vol 106, Issue 48 

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When replying, please edit your Subject line so it is more specific 
than Re: Contents of Emc-users digest... 


Today's Topics: 

1. Re: PathPilot (Andreas Pettersson) 
2. Re: PathPilot (Gregg Eshelman) 
3. Re: PathPilot (what hardware?) (Jon Elson) 
4. Re: PathPilot (Gene Heskett) 
5. Re: motor connections (Gregg Eshelman) 
6. Re: motor connections (Bruce Layne) 
7. Re: motor connections (andy pugh) 
8. Re: motor connections (Gene Heskett) 


-- 

Message: 1 
Date: Thu, 19 Feb 2015 00:14:39 +0100 
From: Andreas Pettersson andr...@roughedge.se 
Subject: Re: [Emc-users] PathPilot 
To: emc-users@lists.sourceforge.net 
Message-ID: 54e51cdf.7020...@roughedge.se 
Content-Type: text/plain; charset=windows-1252; format=flowed 

The lathe was linuxcnc from day one, it was shipped with it even. 


andy pugh skrev den 2015-02-19 00:03: 
 On 18 February 2015 at 21:56, Andrew pkm...@gmail.com wrote: 
 
 The new TP wasn't so nesessary for a lathe, right? 
 Looks like Tormach is going to use LinuxCNC for their mills too. 
 
 The Tormach web-page and the video are both clearly showing mill configs. 
 
 I think that the lathe has been on LinuxCNC for a while. 
 




-- 

Message: 2 
Date: Wed, 18 Feb 2015 18:50:21 -0700 
From: Gregg Eshelman g_ala...@yahoo.com 
Subject: Re: [Emc-users] PathPilot 
To: Enhanced Machine Controller (EMC) 
emc-users@lists.sourceforge.net 
Message-ID: 54e5415d.9060...@yahoo.com 
Content-Type: text/plain; charset=utf-8; format=flowed 

On 2/18/2015 7:07 AM, Gene Heskett wrote: 

 In any event, I still think you paint them (Tormach) with much too black a 
 brush. 

The company that deserves that is Makerbot. Another one is RAMBUS, where 
when Intel, Micron and some other companies went together to create a 
new computer memory standard to replace SDRAM, one member sneakily filed 
patents and trademarks on it all, then proceeded to file lawsuits. 


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Message: 3 
Date: Wed, 18 Feb 2015 20:10:29 -0600 
From: Jon Elson el...@pico-systems.com 
Subject: Re: [Emc-users] PathPilot (what hardware?) 
To: Enhanced Machine Controller (EMC) 
emc-users@lists.sourceforge.net 
Message-ID: 54e54615.8030...@pico-systems.com 
Content-Type: text/plain; charset=ISO-8859-1; format=flowed 

On 02/18/2015 07:38 AM, sam sokolik wrote: 
 I had/have been doing a lot of testing of the new trajectory planner of 
 Robs. (I didn't know or was told that he was working for Tormach - I 
 was upset for about 2 seconds.. :) ) I don't know how they found Rob 
 but wow - they sure picked the right guy to do it. 
Rob gave a presentation at the Machinekit meeting that was 
HELD at Tormach's 
headquarters in Wisconsin. I tried to follow, but it was 
drinking math from 
a firehose. I did get SOME idea of how he did what he did, 
and was VERY 
impressed! 

Jon 



-- 

Message: 4 
Date: Wed, 18 Feb 2015 21:13:39 -0500 
From: Gene Heskett ghesk...@wdtv.com 
Subject: Re: [Emc-users] PathPilot 
To: emc-users@lists.sourceforge.net 
Message-ID: 201502182113.39817.ghesk...@wdtv.com 
Content-Type: Text/Plain; charset=windows-1256 

On Wednesday, February 18, 2015 08:50:21 PM Gregg Eshelman wrote: 
 On 2/18/2015 7:07 AM, Gene Heskett wrote: 
  In any event, I still think you paint them (Tormach) with much too 
  black a brush. 
 
 The company that deserves that is Makerbot. Another one is RAMBUS, 
 where when Intel, Micron and some other companies went together to 
 create a new computer memory standard to replace SDRAM, one member 
 sneakily filed patents and trademarks on it all, then proceeded to 
 file lawsuits. 
 
Quite familiar with the RAMBUS debacle, but MakerBot seems to be a new 
entry in the extra rectums dept. Links plz, I like to stay reasonably up 
to date. But if no great coverage on slashdot, I've likely slept thru it. 
My fault of course, but... ;-) 

Thanks Gregg. 

Cheers, Gene Heskett 
-- 
There are four boxes to be used in defense of liberty: 
soap, ballot, 

Re: [Emc-users] PathPilot (what hardware?)

2015-02-18 Thread Jon Elson
On 02/18/2015 07:38 AM, sam sokolik wrote:
 I had/have been doing a lot of testing of the new trajectory planner of
 Robs.  (I didn't know or was told that he was working for Tormach - I
 was upset for about 2 seconds.. :) )  I don't know how they found Rob
 but wow - they sure picked the right guy to do it.
Rob gave a presentation at the Machinekit meeting that was 
HELD at Tormach's
headquarters in Wisconsin.  I tried to follow, but it was 
drinking math from
a firehose.  I did get SOME idea of how he did what he did, 
and was VERY
impressed!

Jon

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Re: [Emc-users] motor connections

2015-02-18 Thread Gregg Eshelman
On 2/18/2015 7:48 AM, Gene Heskett wrote:
 On Wednesday, February 18, 2015 08:58:20 AM kqt4a...@gmail.com wrote:
 For those who build your own controls, what connectors do you use to
 connect the motors to the control panel? I am talking steppers = 3
 amps. The store bought ones I have looked at use a DIN connector.

 Richard

 I've tried several, even molex's but keeping flying swarf out of them is
 tricky unless backfilled with a silicon caulk,

Using acid free caulk I hope? If it smells like vinegar, it has acetic 
acid in it that will corrode electronics.


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Re: [Emc-users] motor connections

2015-02-18 Thread Gene Heskett
On Wednesday, February 18, 2015 09:38:34 PM andy pugh wrote:
 On 19 February 2015 at 02:32, Bruce Layne
 linux...@thinkingdevices.com
 
 wrote:
  If I needed the soldered connections to survive coolant, I'd slide
  the heat shrink over uncured five minute epoxy and shrink the tubing
  to squeeze out the epoxy and accelerate the epoxy cure,
 
 Why not use glue-filled heat-shrink?
 http://uk.rs-online.com/web/p/heat-shrink-cold-shrink-sleeves/1573824/
 as a random example.

Neat stuff Andy.  But I don't recall seeing it locally, like at Radio 
Shack. Looks like I'll have to order it online.  Does it keep well unused?

Cheers, Gene Heskett
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Re: [Emc-users] motor connections

2015-02-18 Thread andy pugh
On 19 February 2015 at 02:56, Gene Heskett ghesk...@wdtv.com wrote:

 Neat stuff Andy.  But I don't recall seeing it locally, like at Radio
 Shack. Looks like I'll have to order it online.  Does it keep well unused?


As far as I know it keeps indefinitely, and I can buy it at a choice of 3
Maplin stores within 20 miles of here.

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