Re: [Emc-users] Mini ITX
I may share the experience of SA-CNC-CLUB members with mini-ITX motherboards. We have used at least 10 425 and 525 Intel Atom boards with no trouble except the parallel port EPP problem. Lately we have changed over to the D2500HN, D2700MUD and D2800MT boards with no trouble. The latter has an on board parallel port and a PCI-express slot that can take a MESA 6i25 or other cards and on board power supply. We have had no issues with graphics and Linuxcnc on these boards. Rudy -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Which mini ITX board to choose?
2013/4/9 propcoder marius.alks...@gmail.com Dave, thank you for Gigabyte mini-ITX GA-E350N. It is a good candidate. How about micro-ATX? It just takes up more space in control box and that is it. Now I am thinking of ability to put some MESA PCI card to MB. As I understand, this is not possible with GA-E350N? I am puzzled about these PCI and PCI-E ports. Maybe 6i25 card will work with this port? I have no idea. Is it possible to add second PCI-E parport and run it with MESA EPP card? First of all, please check in real life, if the onboard parport is really EPP capable. As it was pointed out earlier, D525MW boards had some issues, I myself tried with 3 different D525MW boards and did not get any of them to work with 7i43 card, although the onboard parport is supposed to work in EPP mode. Yes, You can add another parport in PCI-E slot and use another 7i43 card. Just take 2 things in mind: 1) You have to find such a card for PCI-E slot, I have no seen any; Ok, I found these: http://www.brainboxes.com/lpt-pci-express But their pricing does not seem enouraging... 2) and You have to check in real life that it really works in EPP mode. It has been discussed many times on this list that there is only one or two pci-to-parport cards out there that do actually work in EPP mode. All the others do so only in theory and docs, not in reality. -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Poor CV
2013/4/9 Steve Blackmore st...@pilotltd.net On Sun, 7 Apr 2013 10:21:11 -0500, you wrote: On Sun, Apr 07, 2013 at 10:13:11AM +0100, Steve Blackmore wrote: CV in LinuxCNC still does not work well. Have a look at this http://youtu.be/ph_IVXg1C9Y Please share your gcode and your full config directory. Chris Hal file http://pastebin.com/GP8BNTVR ini file http://pastebin.com/keXTHWyn Both of these files are generated by stepconf wizard back in 2009. And there are some things, like PROGRAM_PREFIX = /home/steve/emc2/nc_files and INTRO_GRAPHIC = emc2.gif, which clearly show that You are not using 2.5.x version; even more - if I remember correctly, NML_FILE = emc.nml was removed from INI config since 2.4.0, so I would speculate that You are using 2.3.x or something even older. Am I really missing something or are You complaining about really old version of LinuxCNC? -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Questions regarding MESA cards
On 9 April 2013 05:17, propcoder marius.alks...@gmail.com wrote: How to know FPGA gate count needed for certain functions / firmware? That is something only Mesa know. Though you _can_ try building the firmwares yourself to see what happens. That is quite an investment in effort though. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Poor CV
On 9 April 2013 09:07, Viesturs Lācis viesturs.la...@gmail.com wrote: Am I really missing something or are You complaining about really old version of LinuxCNC? Possibly, but I don't think that the motion system has changed. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Poor CV
2013/4/9 andy pugh bodge...@gmail.com On 9 April 2013 09:07, Viesturs Lācis viesturs.la...@gmail.com wrote: Am I really missing something or are You complaining about really old version of LinuxCNC? Possibly, but I don't think that the motion system has changed. That is what I also thought as I did not see anything related mentioned in changelog. It is just that it has been mentioned so many times here on mailing list - in case of unsolvable errors on old versions first step is to update to latest-and-greatest, try again as You may never know. Just like in the other thread about custom M command used to reload g-code file, Seb posted a link a discussion in forum, where there is this post: http://www.linuxcnc.org/index.php/english/forum/40-subroutines-and-ngcgui/26290-subroutine-stops-without-warning#31744 And it says that LinuxCNC does not jump back to joint mode after executing mdi command from vcp button through halui, which would answer the issue that was brought up by Tomaz in yet another thread, so I am going to check that out. Sorry for off-topic, what I am trying to say: there is only one way to find out for sure, if particular issue has been fixed in newer release... -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Closed loop stepping system
Does anyone have any experiences using this this system with linuxcnc? http://www.fastech.co.kr/bbs/eng/product.php?mode=view1uid=1# As far as I understand, there would be only one feedback signal from driver to linuxcnc, telling that stepper is in position or not... In my case might be interesting as I'm already using servos for all linear axis, except rotary axes where I still have steppers, as it is in my case a bit difficult to switch on servos, but with this system I could simply change motors (same size, same specs...), and would also be reliable about accuracy and no loosing steps in any case... -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Which mini ITX board to choose?
--- On Tue, 4/9/13, Viesturs Lācis viesturs.la...@gmail.com wrote: clip It has been discussed many times on this list that there is only one or two pci-to-parport cards out there that do actually work in EPP mode. All the others do so only in theory and docs, not in reality. It's almost enough to make me miss the days of ISA and VESA Local Bus multi-IO boards with 20+ jumpers to set all the ports' addresses, speeds and other functions. Set the jumpers, it's gonna frigging *work*. Well, unless the OS was Windows 95 or 95a. That one had a nasty habit of just applying whatever IRQ's and memory addresses it felt like then claiming it was the hardware's fault for not being able to work. Beating Win 95 into submission was a daily chore for me back then. -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Poor CV
On 8 April 2013 22:57, Steve Blackmore st...@pilotltd.net wrote: ini file http://pastebin.com/keXTHWyn I don't really have the tools here to analyse this, but a few observations. At 800mm/sec2 accel and 1200mm/min traverse speed the minimum arc radius is 0.5mm. The circular moves do not appear to be tangent to the straight lines. I wonder if they were meant to be? I wonder if Mach and LinuxCNC are taking a different approach to blending the corners? -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Which mini ITX board to choose?
On 4/9/2013 12:14 AM, propcoder wrote: Dave, thank you for Gigabyte mini-ITX GA-E350N. It is a good candidate. As an addendum to this discussion, I got a chance (doesn't everyone carry a LiveUSB stick in their pocket just in case?) to run latency-test on a substantially similar motherboard, the Biostar A681-E350 Deluxe, being built into a home entertainment center. The American Megatrends BIOS menus are foreign to me and I couldn't decide what if any settings I should change so I left the factory settings alone. I have the usual isolcpus=1 kernel boot parameter. I ran the stock latency-test with 1000us/25us thread periods (all number pairs below are servo/base). For about one minute, the max jitters were 5578ns/3005ns---great---then they popped to 5753ns/24744ns. Within another minute, they popped again to 47102ns/45892ns. At the moment, I don't have sufficient access to this motherboard to investigate so I have to give it a thumbs-down. Stick to the Gigabyte board. Regards, Kent -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Closed loop stepping system
On 9 April 2013 10:11, Tomaz T. tomaz_...@hotmail.com wrote: http://www.fastech.co.kr/bbs/eng/product.php?mode=view1uid=1# It isn't immediately clear what advantage it gives over normal steppers other than stall-detection. I guess it should also be able to recover from a stall too, so perhaps there would be the option of using adaptive-feed to slow other axes to allow it to catch up. It would be interesting to see how it worked out. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Which mini ITX board to choose?
On 9 April 2013 05:14, propcoder marius.alks...@gmail.com wrote: Now I am thinking of ability to put some MESA PCI card to MB. As I understand, this is not possible with GA-E350N? The 6i25 ought to work. That looks to be a 16x slot, running x4, that can negotiate down to x1 with a 6i25 in there. (But check with Mesa) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Which mini ITX board to choose?
On Tue, Apr 9, 2013 at 9:13 AM, andy pugh bodge...@gmail.com wrote: The 6i25 ought to work. That looks to be a 16x slot, running x4, that can negotiate down to x1 with a 6i25 in there. (But check with Mesa) that's weird, when I go to newegg they have a ga-e350N with a PCI slot that's in stock and one with a PCIe slot that isn't. -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Which mini ITX board to choose?
--- On Tue, 4/9/13, Viesturs Lācis viesturs.la...@gmail.com wrote: clip It has been discussed many times on this list that there is only one or two pci-to-parport cards out there that do actually work in EPP mode. All the others do so only in theory and docs, not in reality. I think Viesturs is overstating the problems with these plug-in cards. Yes, there are several old ones that definitely don't work, and one where the manufacturer of the chip even admits that it doesn't work. Most on-motherboard ports work fine, as long as a little BIOS bug is worked around, and as far as I know all LinuxCNC 2.4 and later drivers know how to do this. So, that problem should no longer be any problem. (I sometimes run into this when running diagnostics on EPP-attached hardware. If the diags only work after running LinuxCNC, that makes it clear.) Hopefully we can assemble a list of boards and parport chips known to work and make that available on the wiki. Jon -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Which mini ITX board to choose?
Guys, I think you can pretty much get any Atom these days. I have done several installations on the Intel Atoms and never had any problems. I just did an Installation on a 2800MUD (the very latest) and it took about two hours to clock the first motor. It does not have a parport but only a PCI/E. Good enough for a plasma machine as the THC and extra IO is done via USB. What you have to make sure is that it has a parallel port and a PCI/E slot. That way you can get most of your stuff done. What I noticed on the Intel Atoms MB's is that it is just one board but with various configurations. I made the mistake to not specify that I need a parport and pci on the first order. Now we have a nice media player. They all have very good graphics. Other Marius On 2013/04/09 06:14 AM, propcoder wrote: Dave, thank you for Gigabyte mini-ITX GA-E350N. It is a good candidate. How about micro-ATX? Now I am thinking of ability to put some MESA PCI card to MB. As I understand, this is not possible with GA-E350N? Is it possible to add second PCI-E parport and run it with MESA EPP card? Marius On 2013.04.08 20:59, Dave wrote: From March 30th by Christopher Purcell posted this note below: I have been partial to the Intel D525MW and the D525MWE but the E350N board should be much faster than the D525 boards. The Intel board was discontinued last fall but they still keep making them regardless. the newer Intel MITX boards has a video chip (3650?) that is very unfriendly with Linux. Intel really screwed up on their latest set of MITX boards. I have abandoned conventional rotating drives for LinuxCNC apps since the required drive space is very small and SSDs in the 80 Gig range are under $100 now. Intel has one SSD that has a mean time between failure rating of over 100 years. So the CNC machines I do now might outlive me! ;-) I had been getting about 3 years of continuous use out of a rotating drive before it began to malfunction. I need to order some parts from Newegg this week and a E350N board will be part of the order. Dave -- Regards / Groete Marius D. Liebenberg MasterCut cc Cel: +27 82 698 3251 Tel: +27 12 743 6064 Fax: +27 86 551 8029 Skype: marius_d.liebenberg Skype Me^(TM)! skype:marius_d.liebenberg?call Get Skype http://www.skype.com/go/download and call me for free. --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 130409-0, 2013/04/09 Tested on: 2013/04/09 05:57:49 PM avast! - copyright (c) 1988-2013 AVAST Software. http://www.avast.com -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Found loading problem?
On Tuesday 09 April 2013 07:52:47 Gene Heskett did opine: On Monday 08 April 2013 21:06:07 Kent A. Reed did opine: On 4/8/2013 7:28 PM, Gene Heskett wrote: In the meantime, the latest, should work exactly code (and does on a 2.5.2 install in sim mode) is in the Genes-os9-stf/Gcode/cocking_piece_base.ngc of my web page in the sig. 2 or 5 not exactly right calculations fixed, more debugging some code shuffled around a bit. So I downloaded your g-code and LinuxCNC immediately barfed on it...seems you didn't debug your debugging lines... named parameter #_tgt_width is not defined. Post code that works in your 2.5.2 interpreter and I'll look at it again. Your are correct, that should have been #_y_tgt_width, I found 3 places where the _y was missing. And this code worked for 2.5.2 in sim mode. Now, lets see if it still works. Yes, no change in the backplot, it looks as it it is still working correctly. 41 minutes run time when feed override is 100%. Updated file is there in Genes-os9-stf/GCode/cocking_piece_base.ngc now. Thank you, Kent. Cheers, Gene Further update. Since I don't have anything tied to the parport on this box, I loaded up the Sherline 3 axis profile in place of the sim/axis version but didn't change anything in that configuration. Then I tried to load my code again, and the file was mix-mastered, names changed in lots of locations leading to errors. Determined to fix it, I also re-organized it a bit and shortened it by a few lines. Then I copied it to both the shop machine, and to the Genes-os9-stf/GCode directory where it can be downloaded from now. Lots of (debug, noise) though. As me, I can't access the file you can download, but just to check, I then loaded the copy off the mill, over an nfs share, and it ran here, on a 2.5.2 install. So after catching up on my sleep, since all the above was in the wee hours of the morning, I just went to the shop, AND it loads without any squabbles on the 2.6.0-pre on that machine now. I'd torn down the setup on the table in order to mount a jig to bore crossways holes in some leather strapping for the lady next door, who is and is married to a cherokee, and who is making some fancy pow-wow costume pieces. About a 15 piece of 3/8 wide strap, 26 holes at 1/2 intervals. And that is the limit of my table, I have to mount the jig very carefully to span that 12.75 in one step repeat pass. Each of the breastplates takes 5 of those. Anyway, it looks like it will run on the 2.6.0-pre just fine now. WHOPPEE KI YI YEA! Over a week I been screwing with this. But I am puzzled at the damages that file had when I reloaded it after loading not the sim profile, but the default Sherline 3 axis setup instead. It certainly was NOT the code I had done a ctrl-s and ctrl-q to quit gedit 4 hours before! Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene is up! My views http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml Every word is like an unnecessary stain on silence and nothingness. -- Beckett A pen in the hand of this president is far more dangerous than a gun in the hands of 200 million law-abiding citizens. -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] OT - help identifying machine in a collage
A librarian friend asked me to help identify the following device in a collage from a Serbian artist (August Černigoj) circa 1925. Image of the collage and a close-up of the device can be found here: http://static.inky.ws/image/3834/La%20Strada,%201925-1.jpg http://static.inky.ws/image/3835/machine_1.png If anyone can identify this device, it's the people on this list! Thanks! Daniel Rogge -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Which mini ITX board to choose?
On Tue, 9 Apr 2013, Eric Keller wrote: Date: Tue, 9 Apr 2013 10:28:11 -0400 From: Eric Keller eekel...@psu.edu Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: Re: [Emc-users] Which mini ITX board to choose? On Tue, Apr 9, 2013 at 9:13 AM, andy pugh bodge...@gmail.com wrote: The 6i25 ought to work. That looks to be a 16x slot, running x4, that can negotiate down to x1 with a 6i25 in there. (But check with Mesa) that's weird, when I go to newegg they have a ga-e350N with a PCI slot that's in stock and one with a PCIe slot that isn't. There are 2 GA-E350Ns: the plain GA-350N that has a PCI slot, and the GA-E350N-USB3 that has a 4 lane PCIE slot (16 physical) Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Poor CV
I tried your value, and it seem you are really close to the max frequency drive for the stepper. Can you try to change scale on all 3 axis (divide bay 10) and check that the total time is still the same or not ? this will help to understand if this a trajectory interpolation limitation or a max stepper pulse rate limitation. SCALE = 400.0 -- SCALE = 40.0 (this shall not be a mechanical problem to try, as move will be 10x smaller) Claude Le 08.04.2013 23:57, Steve Blackmore a écrit : On Sun, 7 Apr 2013 10:21:11 -0500, you wrote: On Sun, Apr 07, 2013 at 10:13:11AM +0100, Steve Blackmore wrote: CV in LinuxCNC still does not work well. Have a look at this http://youtu.be/ph_IVXg1C9Y Please share your gcode and your full config directory. Chris Hal file http://pastebin.com/GP8BNTVR ini file http://pastebin.com/keXTHWyn Thanks Steve Blackmore -- -- Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Found loading problem?
On 4/9/2013 12:12 PM, Gene Heskett wrote: Anyway, it looks like it will run on the 2.6.0-pre just fine now. Gene: Glad to hear it works now. At this point I think I'll climb back into my hole before i start hazarding guesses that may serve only to muddy the waters. :-) As for your mix-mastered file, I got lost in your description of the sequence of events. I haven't had a text file corrupted in such a manner since the early days of word processors. Regards, Kent -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT - help identifying machine in a collage
Combination gearbox and drive tensioner for something like a paper manufacturing line perhaps? On Apr 9, 2013 12:03 PM, Eric Keller eekel...@psu.edu wrote: On Tue, Apr 9, 2013 at 12:17 PM, Daniel Rogge dro...@tormach.com wrote: A librarian friend asked me to help identify the following device in a collage from a Serbian artist (August Černigoj) circa 1925. Image of the collage and a close-up of the device can be found here: http://static.inky.ws/image/3834/La%20Strada,%201925-1.jpg http://static.inky.ws/image/3835/machine_1.png I have seen a gearbox that looked a lot like that, but I can't place it. I'm sure it's a gearbox though -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT - help identifying machine in a collage
On 4/9/2013 1:49 PM, Jason Burton wrote: Combination gearbox and drive tensioner for something like a paper manufacturing line perhaps? On Apr 9, 2013 12:03 PM, Eric Keller eekel...@psu.edu wrote: On Tue, Apr 9, 2013 at 12:17 PM, Daniel Rogge dro...@tormach.com wrote: A librarian friend asked me to help identify the following device in a collage from a Serbian artist (August Černigoj) circa 1925. Image of the collage and a close-up of the device can be found here: http://static.inky.ws/image/3834/La%20Strada,%201925-1.jpg http://static.inky.ws/image/3835/machine_1.png I have seen a gearbox that looked a lot like that, but I can't place it. I'm sure it's a gearbox though Fascinating collage. In hopes that knowing more about the artist might help, I read the Wikipedia article. In part, it says In 1924, he helped with the mounting of the first Constructivist exhibition in Yugoslavia, held in the premises of the Secondary Technical School in Ljubljana. The exhibits included architectural models, reliefs and sculptures, as well as parts of machines, overalls and politically artistic slogans. This exhibition has now been partially re-constructed as part of the new displays at the re-built Moderna Galerija in Ljubljana. This thumbnail sketch is entirely consistent with what we see in the collage but not very helpful in identification. The references in the Wikipedia article are not relevant. Looking at that bail, I like Jason's guess. Regards, Kent -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT - help identifying machine in a collage
Daniel, one thing is for sure: There is no plug on the item for a connection to LinuxCNC. Maybe it's a coil winding machine or a device to wind up torsion springs, e.g. for grammophones or such, very useful and necessary at the time. There seem to be gears inside the casing, being able to apply large torsion moment (telling from the size of the axis and bearing protruding below at center). On the bottom left there could be the top of a motor, where the whole gear box casing can be rotated by hand until it is secured by the square head setting screw. The arm coming in from the left may swing around its pivot on the left side and may have guided a thread or thin wire to a coil on the tapered center stud. Another proposal: the heavy hex stud on the right may be the top of a vertical shaft pointing downwards, probably turning at low speed. The setup reminds me of an early kitchen dough kneading machine my parents had long ago. The whole thread reminds me of a popular quiz program on German TV: Dings vom Dach, meaning aboout Gimmick from the roof. Everybody can send in some enigmatic item and gets a small reward in case the quiz team is unable to guess its purpose. Peter Am 09.04.2013 18:17, schrieb Daniel Rogge: A librarian friend asked me to help identify the following device in a collage from a Serbian artist (August Černigoj) circa 1925. Image of the collage and a close-up of the device can be found here: http://static.inky.ws/image/3834/La%20Strada,%201925-1.jpg http://static.inky.ws/image/3835/machine_1.png If anyone can identify this device, it's the people on this list! Thanks! Daniel Rogge -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] axis-remote in M-call problems
Ok, just to be clear what I'm trying to do here: I have a probe function that probes towards the work piece, on contact, I set Z pos with G10 L20. When I do that, the preview plot in axis does not update and represent the correct Z height. So I want to do a axis-remote --reload in the probe routine to refresh the plot (refresh of the plot is done automatically in axis when you use the built in touch off buttons, at least it seems to be doing that), to be able to do this --reload I need have a script M155 that is called from probe o-sub. I have poked around a little in the sub and rearranged the call to M155 to the end of the sub. I wonder if the problem you're seeing is related to this one: http://www.linuxcnc.org/index.php/english/forum/40-subroutines-and-ngcgui/26290-subroutine-stops-without-warning Maybee, but one could say I have more problems in MDI mode. If I in the M155 I have axis-remote --reload , the reload is instant in manual mode , but is delayed in MDI mode (and debug message from within M155 is printed in both). Without the , there is a delay in both manual and MDI mode, and the debug message is not executed Chris - You are correct about the behavior of the reload button and axis-remote --reload situations, they should not be executed while program is running! Problem is as I said above the plot is not updated when I set Z with G10 L20 to reflect correct Z height. Maybe there is another way of touching of Z that I have not been thinking of? I have tried this in sim and same thing happens there. Here is a link to a zipped config running in sim mode if someone wants to test it, you need to place the M155 file so linuxcnc finds it: https://dl.dropbox.com/u/27552984/Lillasyster_sim.tar.gz 2013/4/8 Chris Radek ch...@timeguy.com On Wed, Apr 03, 2013 at 09:09:33PM +0200, Henrik Munktell wrote: Still having problems with M code executing axis-remote --reload. Read this post: http://www.linuxcnc.org/index.php/english/forum/10-advanced-configuration/24367-creating-a-qone-button-touch-offq-button?start=10#28660 Just updated to latest master and this still bugs me. I call this M code in a probe routine to reload the gcode, and then perform a Z retract. Problem is that code after the M155 call is not executed, and thus not the Z retract. This is my probe sub: axis-remote --reload tells AXIS to do the same thing it does when you poke the reload button. It only makes sense to do this while in manual mode with no program running. You've contrived a way to trigger it while a program is running, but that's just not going to work. When I try that at the shell with a program running, I get an error: % axis-remote --reload axis cannot accept remote command while running When I poke the reload button (which should be greyed out) while a program's running, it does nothing. I am not sure why you are getting anything other than a simple error but that is mostly beside the point. This will not work and you need to accomplish your goal (and I'm not actually sure what it is) in a different way. -- Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] axis-remote in M-call problems
On 9 April 2013 19:54, Henrik Munktell henrik.munkt...@gmail.com wrote: I have a probe function that probes towards the work piece, on contact, I set Z pos with G10 L20. When I do that, the preview plot in axis does not update and represent the correct Z height. So I want to do a axis-remote --reload in the probe routine to refresh the plot Refreshing the plot is a perfectly natural thing to want to do. Wanting to reload a _running_program_ is just asking for trouble. I wish I knew enough Python / tcl to know if it was trivial to add a refresh command to Axis. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Poor CV
On Tue, 09 Apr 2013 19:18:13 +0200, you wrote: I tried your value, and it seem you are really close to the max frequency drive for the stepper. Claude - if that were so it would not work with identical settings under Mach3. Same step frequency, same drivers same PC same everything. Steve Blackmore -- -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Poor CV
On Tue, Apr 9, 2013, at 05:04 PM, Steve Blackmore wrote: On Tue, 09 Apr 2013 19:18:13 +0200, you wrote: I tried your value, and it seem you are really close to the max frequency drive for the stepper. Claude - if that were so it would not work with identical settings under Mach3. Same step frequency, same drivers same PC same everything. It might be close to the limits of the EMC step pulse generator (which aren't neccessarily the same as those of the Mach step pulse generator). Personally I think that is unlikely, but the test is relatively straightforward. You could reduce by just a factor of two instead of ten, the key is to drop it by a significant factor on both systems and see if the difference is still there. If the misbehavior is still there, that pretty much rules out step generator limits. -- John Kasunich jmkasun...@fastmail.fm -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Poor CV
On Tue, 9 Apr 2013 09:48:33 +0100, you wrote: On 9 April 2013 09:07, Viesturs L?cis viesturs.la...@gmail.com wrote: Am I really missing something or are You complaining about really old version of LinuxCNC? Possibly, but I don't think that the motion system has changed. I am using the latest version! The bug appeared with V2.4 and is still there. Possibly when changes were made to G64 ?? Maybe this one ? interpreter: G64 P- Q- specifies motion and naive cam tolerances separately The stepconf was done originally with V2.3 Steve Blackmore -- -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Poor CV
On Tue, 9 Apr 2013 11:07:22 +0300, you wrote: Both of these files are generated by stepconf wizard back in 2009. And there are some things, like PROGRAM_PREFIX = /home/steve/emc2/nc_files and INTRO_GRAPHIC = emc2.gif, which clearly show that You are not using 2.5.x version; Clearly it shows no such thing - only those files were produced in 2009.. even more - if I remember correctly, NML_FILE = emc.nml was removed from INI config since 2.4.0, so I would speculate that You are using 2.3.x or something even older. Don't speculate :) Am I really missing something or are You complaining about really old version of LinuxCNC? Yes you are missing something, I am using 2.5.2 and it has been flakey since 2.4. Steve Blackmore -- -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Closed loop stepping system
The whole point is that I don't have any feedback from steppers at this stage, and as I said, the cheapest solution would be to simply change the existing one with the one with closed loop future (and also drivers). So the basic idea might be to use In-Position signal (output) from stepper driver and when this goes fault, it triggers following error in linuxcnc. Could this work? Anyone using this stepper system from kelinginc? http://www.automationtechnologiesinc.com/products-page/nema23-closed-loop-stepper-motor-system-hybrid-servo-kit/hybrid-servo-drive-kl-5080h It isn't immediately clear what advantage it gives over normal steppers other than stall-detection. I guess it should also be able to recover from a stall too, so perhaps there would be the option of using adaptive-feed to slow other axes to allow it to catch up. It would be interesting to see how it worked out. -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Poor CV
On Tue, 9 Apr 2013 13:55:30 +0100, you wrote: On 8 April 2013 22:57, Steve Blackmore st...@pilotltd.net wrote: ini file http://pastebin.com/keXTHWyn I don't really have the tools here to analyse this, but a few observations. At 800mm/sec2 accel and 1200mm/min traverse speed the minimum arc radius is 0.5mm. Slowing the acceleration or max speed makes no difference, it still does it, just less obvious. The sound in the videos is the big giveaway, you can hear the changes in velocity easier than see them. The circular moves do not appear to be tangent to the straight lines. I wonder if they were meant to be? The drawing is the outline of a Fender Telecaster, the file was optimised using Rhino V4 before producing the code using FeatureCam V15. The lines are contiguous to +/- 0.0001mm. If there were errors with the drawing both would complain and not accept it as one continuous outline. I wonder if Mach and LinuxCNC are taking a different approach to blending the corners? Almost certainly. Did you read the 2011 posts? In particular the one where Art explains how he did CV for Mach? Also Daniel at Tormach concurs, his observation follows for those who haven't read the old stuff on this The problem is apparent at the first G2 move. The machine appears to change feedrate between G2 and G1 moves. Moving from one G2 line to another G2 line is smooth, and moving from one G1 line to another G1 line is smooth. G1 moves appear to run at around 60% of the feedrate of the G2 moves, so the transition from G1 to G2 (or G2 to G1) makes the machine seem erratic. If I slow the feedrate down, the problem persists. Steve Blackmore -- -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Poor CV
The drawing is the outline of a Fender Telecaster, the file was optimised using Rhino V4 before producing the code using FeatureCam V15. The lines are contiguous to +/- 0.0001mm. If there were errors with the drawing both would complain and not accept it as one continuous outline. i see no reason to have the resolution of your cam system set this high if i did that in mastercam it would triple the code although i still dont think this is your answer just an observation? i have asked a bit about look ahead and have heard some muffled replies what exactly is the lcnc look ahead ? it does not appear to be infinite? and last I really prefer to avoid cv actions as they do not produce the most efficient programs, but nonetheless i would be interested to see what is discovered here On Tue, Apr 9, 2013 at 6:14 PM, Steve Blackmore st...@pilotltd.net wrote: On Tue, 9 Apr 2013 13:55:30 +0100, you wrote: On 8 April 2013 22:57, Steve Blackmore st...@pilotltd.net wrote: ini file http://pastebin.com/keXTHWyn I don't really have the tools here to analyse this, but a few observations. At 800mm/sec2 accel and 1200mm/min traverse speed the minimum arc radius is 0.5mm. Slowing the acceleration or max speed makes no difference, it still does it, just less obvious. The sound in the videos is the big giveaway, you can hear the changes in velocity easier than see them. The circular moves do not appear to be tangent to the straight lines. I wonder if they were meant to be? The drawing is the outline of a Fender Telecaster, the file was optimised using Rhino V4 before producing the code using FeatureCam V15. The lines are contiguous to +/- 0.0001mm. If there were errors with the drawing both would complain and not accept it as one continuous outline. I wonder if Mach and LinuxCNC are taking a different approach to blending the corners? Almost certainly. Did you read the 2011 posts? In particular the one where Art explains how he did CV for Mach? Also Daniel at Tormach concurs, his observation follows for those who haven't read the old stuff on this The problem is apparent at the first G2 move. The machine appears to change feedrate between G2 and G1 moves. Moving from one G2 line to another G2 line is smooth, and moving from one G1 line to another G1 line is smooth. G1 moves appear to run at around 60% of the feedrate of the G2 moves, so the transition from G1 to G2 (or G2 to G1) makes the machine seem erratic. If I slow the feedrate down, the problem persists. Steve Blackmore -- -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- jeremy youngs -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Poor CV
On 9 April 2013 23:14, Steve Blackmore st...@pilotltd.net wrote: The problem is apparent at the first G2 move. The machine appears to change feedrate between G2 and G1 moves. Moving from one G2 line to another G2 line is smooth, and moving from one G1 line to another G1 line is smooth. G1 moves appear to run at around 60% of the feedrate of the G2 moves, That does seem to be what you are seeing. However I just tried a test 200mm move and a 32.8mm radius circle and they both took the same length of time Do you get the same result? (I was running in a sim, so it might not be a valid test) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Poor CV
andy
That does seem to be what you are seeing. However I just tried a test
200mm move and a 32.8mm radius circle and they both took the same
length of time
Do you get the same result?
(I was running in a sim, so it might not be a valid test)
steve
100 G0 G21 G17 G90 G40 G49 G80
N110 G91.1
N120 G1 Z20.000 F3600.0
N130 T1 M06
N140 (End Mill {6 mm})
N150 G43H1 Z20.000
N160 S12000 M03
N170(Toolpath:- Profile 1)
N180()
N190 G64
N200 G1 X0.000 Y0.000 F3600
N210 G0 X-1.974 Y8.147 Z6.000
N220 G1 X-1.974 Y8.147 Z-1.000 F1200.0
N230 G2 X-1.346 Y40.813 I1274.739 J-8.173 F3600.0
n200 f=3600 (rapid??? is this the machines max velocity??)
n220 f1200 thats the feed
n230 f3600
these are consistent with andys observations I.E the machine is doing what
its programmed to
but here is what i dont know if the 3600 is the max feed then can the
machine interpolate at that speed???
--
jeremy youngs
--
Precog is a next-generation analytics platform capable of advanced
analytics on semi-structured data. The platform includes APIs for building
apps and a phenomenal toolset for data science. Developers can use
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Re: [Emc-users] Found loading problem?
On Tuesday 09 April 2013 22:46:18 Kent A. Reed did opine: On 4/9/2013 12:12 PM, Gene Heskett wrote: Anyway, it looks like it will run on the 2.6.0-pre just fine now. Gene: Glad to hear it works now. At this point I think I'll climb back into my hole before i start hazarding guesses that may serve only to muddy the waters. :-) As for your mix-mastered file, I got lost in your description of the sequence of events. I haven't had a text file corrupted in such a manner since the early days of word processors. Regards, Kent That was a first for me too, in likely 20 or more years. Anyway, the part is now cut out, sharp edges broken, drilled and countersunk for a couple cap screws, and ATM is superglued to the part it will be bolted to once I drill tap the 2 holes for the bolts. Then I'm ready to shorten up the striker spring, put it together see if it will still do a 1.5 group at 50 yards. BP rifle makings IOW. A solidly locked bolt to contain the back thrust of the #209 primer, and a fully legit firing pin, which it never had before. If it works right, the folks on the next bench over won't be accusing me of shooting old butt-burner ever again. Thanks Kent. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene is up! My views http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml The voters have spoken, the bastards... -- unknown A pen in the hand of this president is far more dangerous than a gun in the hands of 200 million law-abiding citizens. -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Will LinuxCNC work with a CandCNC Dragon Cut system?
Placed an order for a CandCNC Dragon Cut kit plus the extras needed to connect its THC to a Hypertherm 600. Looking further down the road, it looks as if a switch to LinuxCNC will be required if/when 2-axis torch tilt gets added to the plasma table because Mach3 can't do that and it doesn't look like the ability to handle the kinematics for a tilting spindle/torch will be added anytime soon. Might do a dual boot with WinXP/Mach3 and LinuxCNC. I went with the CandCNC kit because the guy putting up the money is more concerned with how soon the table can be put together than how much money can be saved. -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Further thoughts on cable driven cutting torch.
How about this idea for getting the equivalent of four motors on a horizontal two joint articulated arm using three motors... Put two motors at opposite corners with the third on a line bisecting the line between the other two. Directly opposite the third motor, use a weight or spring. That would have four cables connected to the end of the arm and give the same control authority over the full envelope (which is non-square) reachable by the end of the arm. With three motors at 120 degrees to each other it's impossible to move the end of the arm outside of the triangle framed by the motors. With three motors and a weight at 90 degrees it's possible to move the end of the arm anywhere within the square that the arm can reach. Since it's a torch instead of a cutting tool in direct contact with the workpiece, there's no forces that could kick back and pull the weight. Then there's the issue of the non-quadrilateral shape of the maximum operating envelope. How does LinuxCNC handle that? Aaaad I just had another thought. Two motors and two weights... but that wouldn't work too well when needing the arm end to move out towards one of the weight's corners as the weights are passive and wouldn't move differentially. Pretty much the same issues as a two motor and one weight system. With a vertical string plotter a quadrilateral envelope can be covered with only two motors, but cable slack on the long side is a problem in the lower corners and close to the motors, with a corresponding lack of control authority. Thought discarded as interesting but unworkable for horizontal use. ;-) -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Closed loop stepping system
2013/4/10 Tomaz T. tomaz_...@hotmail.com The whole point is that I don't have any feedback from steppers at this stage, and as I said, the cheapest solution would be to simply change the existing one with the one with closed loop future (and also drivers). So the basic idea might be to use In-Position signal (output) from stepper driver and when this goes fault, it triggers following error in linuxcnc. Could this work? So why don't You put encoders on stepper motors and link encoder position to axis.n.motor-pos-fb pin and let LinuxCNC track actual motor position and it definitely will trigger following error, once it has been reached. This way there are no fancy stepper drives and motors are required. Anyone using this stepper system from kelinginc? http://www.automationtechnologiesinc.com/products-page/nema23-closed-loop-stepper-motor-system-hybrid-servo-kit/hybrid-servo-drive-kl-5080h No tuning of feedback loop? Well, then I do not see, how does this system achieve its goal and correct for motor's position error. -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
