Re: [Emc-users] DIY BLDC Motors - FCM8201,2 and IRAMS
On Sun, Jan 23, 2011 at 08:00:22AM -0500, gene heskett wrote: I don't think this is the link you intended? This is to a pdf brochure describing only the encoder. Whoops! Here's the recycled alternator BLDC example that I had in mind: http://www.youtube.com/watch?v=Tu-ia7GylO0 There are others there. I don't know how well the motor performs, but it is a quicker way to start experimenting than ordering rotor laminations and copper wire. Erik -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] G-Code files needed
On Sun, Jan 23, 2011 at 3:00 PM, Neil Baylis neil.bay...@gmail.com wrote: On Sun, Jan 23, 2011 at 12:58 PM, Ed Nisley ed.08.nis...@pobox.comwrote: On Sun, 2011-01-23 at 12:23 -0800, Neil Baylis wrote: large or complex g-code files The programs I've been writing for my Along the G-Code Way columns in Digital Machinist aren't all that large, but they do exercise some EMC2-specific language features. The more recent ones will probably be the most useful. They're tucked into the ZIP files at: http://www.digitalmachinist.net/downloads Great, thanks Ed, that's a good resource. Which text editor are you targeting? I'll start with Emacs, because that's what I'm most familiar with. If that goes well, then I will look at vi. If there's demand, I would consider other editors as well, but let's not get ahead of ourselves just yet ;-) Neil This is completed, turned out to be easier than I expected. According to the EMC Wiki, there is already G-Code syntax highlighting for Vim and Gedit, so I don't think I need bother with any other editors. You can see how the Emacs version looks herehttp://pixpopuli.blogspot.com/2011/01/syntax-highlighting-for-cnc-g-code.html . Neil -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] G-Code files needed
On 24 January 2011 16:29, Neil Baylis neil.bay...@gmail.com wrote: herehttp://pixpopuli.blogspot.com/2011/01/syntax-highlighting-for-cnc-g-code.html I have a feeling that XYZABCUVW and F should possibly be treated as commands and highlighted specifically. I am not at all sure how you would do that, though. -- atp Torque wrenches are for the obedience of fools and the guidance of wise men -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] G-Code files needed
http://www.cncgadgets.com/cncfree/Aztec-Mayan%20Calendar%20G-code.zip Has a freely available Aztec/Myan type Calendar. A bit over 11MBytes I am told. Is that sufficient? I found it by doing a Google search for aztec calendar g-code and CNCZone where I found this link a is free forum. ... Jack Whatever you do, work at it with all your heart... Colossians 3:23 -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] G-Code files needed
On Mon, Jan 24, 2011 at 8:53 AM, andy pugh bodge...@gmail.com wrote: On 24 January 2011 16:29, Neil Baylis neil.bay...@gmail.com wrote: here http://pixpopuli.blogspot.com/2011/01/syntax-highlighting-for-cnc-g-code.html I have a feeling that XYZABCUVW and F should possibly be treated as commands and highlighted specifically. I am not at all sure how you would do that, though. Does F have a usage other than for feedrate? The code highlights F in that case. Neil -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] DIY BLDC Motors - FCM8201,2 and IRAMS
Erik Christiansen wrote: On Sun, Jan 23, 2011 at 08:00:22AM -0500, gene heskett wrote: I don't think this is the link you intended? This is to a pdf brochure describing only the encoder. Whoops! Here's the recycled alternator BLDC example that I had in mind: http://www.youtube.com/watch?v=Tu-ia7GylO0 OK, this video seems to be about using an alternator with a sensorless drive chip. I think that would perform horribly as an axis positioning motor. Unless the motor is run at at least several hundred RPM, the chip loses track of rotor position and needs to wiggle the motor to figure out where the poles are. It may also give no way to reverse the motor. Now, if this whole discussion is about spindle motors, that would probably be fine. If it is for axis motors, I think it will be a problem. Also, a good brushless servo motor has minimal torque or velocity ripple, even down to extremely slow speeds. Certainly, a car alternator is not optimized for smoothness at low speeds. The Keling motors are so cheap they may cost less than a used alternator at the junkyard. Jon -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] DIY BLDC Motors - FCM8201,2 and IRAMS
On Monday, January 24, 2011 12:18:11 pm Erik Christiansen did opine: On Sun, Jan 23, 2011 at 08:00:22AM -0500, gene heskett wrote: I don't think this is the link you intended? This is to a pdf brochure describing only the encoder. Whoops! Here's the recycled alternator BLDC example that I had in mind: http://www.youtube.com/watch?v=Tu-ia7GylO0 There are others there. I don't know how well the motor performs, but it is a quicker way to start experimenting than ordering rotor laminations and copper wire. Erik Certainly a lot faster. I wonder how small these mini car models can be had? I have in mind a better spindle motor for my micromill. I may have to stop at the local scrap auto place and check this out! -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- 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) Fame may be fleeting but obscurity is forever. -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] G-Code files needed
On Mon, Jan 24, 2011 at 9:08 AM, Jack Coats j...@coats.org wrote: http://www.cncgadgets.com/cncfree/Aztec-Mayan%20Calendar%20G-code.zip Has a freely available Aztec/Myan type Calendar. A bit over 11MBytes I am told. Is that sufficient? I found it by doing a Google search for aztec calendar g-code and CNCZone where I found this link a is free forum. ... Jack Thanks Jack. This file uncovered some deficiencies with my highlighter, so back to the drawing board. Neil -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] G-Code files needed
Neil Baylis wrote: On Mon, Jan 24, 2011 at 9:08 AM, Jack Coatsj...@coats.org wrote: http://www.cncgadgets.com/cncfree/Aztec-Mayan%20Calendar%20G-code.zip Has a freely available Aztec/Myan type Calendar. A bit over 11MBytes I am told. Is that sufficient? I found it by doing a Google search for aztec calendar g-code and CNCZone where I found this link a is free forum. ... Jack Thanks Jack. This file uncovered some deficiencies with my highlighter, so back to the drawing board. I haven't looked at that particular file, but I can point out a few things that were interesting when making the gedit hilighter. (I didn't do it, but I did help out somewhat in the form of IRC conversations with the person who did the actual work) 1) Whitespace is irrelevant to the G-code parser. X12.34 is identical to X1 2. 3 4 in EMC. 2) G-code is case insensitive. I noticed in the lisp snippet that you have various keywords in all caps and all lower case, but not mixed case, which is also legal in EMC. So any of and, anD, aNd, aND, And, AnD, ANd, and AND are valid G-code. 3) My opinion is that the numbers should be colored differently than the words they go with. so in G0X12.34, G should be one color, the two numbers 0 and 12.34 should be another color, and X, being an axis word, should be a different color. I don't know if the code is capable of doing that, since the screenshot shows codes and numbers as having one style (like g0) Thanks for the efforts :) - Steve -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] DIY BLDC Motors - FCM8201,2 and IRAMS
On 24 January 2011 17:22, Jon Elson el...@pico-systems.com wrote: Also, a good brushless servo motor has minimal torque or velocity ripple, even down to extremely slow speeds. Certainly, a car alternator is not optimized for smoothness at low speeds. Putting on my work hat, I think that they probably are optimised for smoothness, as any cogging torque is likely to excite the FEAD belt and create troublesome noises. Whether this translates to smooth output torque is something I am less clear on. I seem to recall that they use a skewed rotor. It shouldn't be too hard to add hall sensors to one of these, or even to fit an encoder and drive it sinusoidally. Time to raid the scrap bin at work :-) -- atp Torque wrenches are for the obedience of fools and the guidance of wise men -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] DIY BLDC Motors - FCM8201,2 and IRAMS
On Mon, 2011-01-24 at 22:44 +1100, Erik Christiansen wrote: On Sun, Jan 23, 2011 at 08:00:22AM -0500, gene heskett wrote: I don't think this is the link you intended? This is to a pdf brochure describing only the encoder. Whoops! Here's the recycled alternator BLDC example that I had in mind: http://www.youtube.com/watch?v=Tu-ia7GylO0 There are others there. I don't know how well the motor performs, but it is a quicker way to start experimenting than ordering rotor laminations and copper wire. Erik My understanding is that these are _very_ inefficient as motors, let alone as alternators. Common stator laminations are fairly thick, the rotors don't have any laminations, so there are significant eddy losses. There is a reason these come fitted with a fan, which is another loss itself. I have thought a new permanent magnet or laminated rotor might be worth a try. But one would need to measure temperature and efficiency with realistic loads to see if they would be practical. I agree that much can be learned by experimenting with an automotive alternator, but it's best if one can be had for free or very low cost. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] G-Code files needed
On Mon, Jan 24, 2011 at 9:39 AM, Stephen Wille Padnos spad...@sover.netwrote: I haven't looked at that particular file, but I can point out a few things that were interesting when making the gedit hilighter. (I didn't do it, but I did help out somewhat in the form of IRC conversations with the person who did the actual work) 1) Whitespace is irrelevant to the G-code parser. X12.34 is identical to X1 2. 3 4 in EMC. Yes, I'm thinking about this. I doubt it's worth the effort of parsing numbers that have embedded spaces. Do people actually do this? Spaces after the axis letters should be handled though. 2) G-code is case insensitive. I noticed in the lisp snippet that you have various keywords in all caps and all lower case, but not mixed case, which is also legal in EMC. So any of and, anD, aNd, aND, And, AnD, ANd, and AND are valid G-code. Yes, it's not pretty. I could write a function that would expand a keyword into all possible combinations of upper and lower case, but that's probably going too far. Maybe I should just add a version where the first letter is capitalized. My personal opinion is that if someone writes 'aNd' they probably didn't intend it, so it would be helpful if it showed up in a different color. But I don't know much about how G-Code is normally written and used, so I'm prepared to be corrected. 3) My opinion is that the numbers should be colored differently than the words they go with. so in G0X12.34, G should be one color, the two numbers 0 and 12.34 should be another color, and X, being an axis word, should be a different color. I don't know if the code is capable of doing that, since the screenshot shows codes and numbers as having one style (like g0) This can be fixed, I'm looking at it. Also, I'm going to recognize line numbers separately, and make them light grey so they don't stand out so much, based on the files Jack sent, which have thousands of line numbers and appear very cluttered. This is exactly what syntax highlighting is supposed to help with. -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] DIY BLDC Motors - FCM8201,2 and IRAMS
On 24 January 2011 17:53, Kirk Wallace kwall...@wallacecompany.com wrote: My understanding is that these are _very_ inefficient as motors, let alone as alternators. One issue will be that to get anywhere near magnetic saturation (and hence full potential) you will need a current similar to the max output current of the alternator, typically 150A or so. -- atp Torque wrenches are for the obedience of fools and the guidance of wise men -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] DIY BLDC Motors - FCM8201,2 and IRAMS
On Sun, Jan 23, 2011 at 4:29 AM, Lars Andersson l...@larsandersson.com wrote: I am just curious, in what application is it needed to know motor shaft position to fractions of a degree even with constant and variable loads when running at 2 rpm? They are talking about two separate modes: spindle control at high speed, and position control at essentially zero speed, implementing a 'rotary table' -style fixture, and the toolpost holds milling or shaping tools. -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] DIY BLDC Motors - FCM8201,2 and IRAMS
My understanding is that these are _very_ inefficient as motors, let alone as alternators. Common stator laminations are fairly thick, the rotors don't have any laminations, so there are significant eddy losses. There is a reason these come fitted with a fan, which is another loss itself. I have thought a new permanent magnet or laminated rotor might be worth a try. But one would need to measure temperature and efficiency with realistic loads to see if they would be practical. They are quite inefficient as alternators, probably also as motors. Also they are not strictly brushless. There are two brushes to get current to the rotor. The reason the rotor is not laminated is the magnetic flux there is quite constant and certainly is not reversing. The rotor is magnetised with a fairly high current like 3A at 12V. Changing this current is the way output voltage from the alternator is controlled. This rotor current is a pure loss. IMHO it is today better for our purposes to magnetise the rotor with supermagnets. -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] DIY BLDC Motors - FCM8201,2 and IRAMS
On 24 January 2011 20:23, Lars Andersson l...@larsandersson.com wrote: Also they are not strictly brushless. There are two brushes to get current to the rotor. FWIW the alternator on my bike is a permanent magnet outrunner. I am on the second one… http://www.bodgesoc.org/OhDear.jpg No use as a servo though, because it is integral to the engine, and costs £600. -- atp Torque wrenches are for the obedience of fools and the guidance of wise men -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] DIY BLDC Motors - FCM8201,2 and IRAMS
FWIW the alternator on my bike is a permanent magnet outrunner. I am on the second one. http://www.bodgesoc.org/OhDear.jpg That is a more modern design than the car style alternator. Very similar to an R/C outrunner. The magnets in your alternator did not live up to their name: permanent. These rare earth magnets are very sensitive to corrosion, they have an outer plating of nickel or something, when this coating is damaged the magnet turns to dust quickly. -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] DIY BLDC Motors - FCM8201,2 and IRAMS
Jon Elson wrote: Also, a good brushless servo motor has minimal torque or velocity ripple, even down to extremely slow speeds. Certainly, a car alternator is not optimized for smoothness at low speeds. I get some used PMSM from auctions. Replacing the bearings gives them a second life. Keep the angle position of the resolver on the rotor! So you can test it with an old (with analog velocity input) 3 phase power supply. Usually this motors run very smooth if the stator pack is twisted giving nearly no torque ripple (assuming rotating magnets). Motors with torque ripple maybe used as a drive if the control can do a predistortion to the current to compensate for the ripple. But I have not seen this until now with my eyes. Three phase ac motors (no magnets, cheap) do not have this torque ripple. But the torque is a function of difference in frequency of rotating magneting field and the rotor. A different control strategy is required. Joachim -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Gladevcp problems
On Mon, 24 Jan 2011 22:40:26 +, Steve Blackmore st...@pilotltd.net wrote: On Sat, 22 Jan 2011 09:55:28 -, John Prentice wrote: EMC2 cloned from Master on 15 Jan onto a clean machine set up by Lucid Live-CD EMC install in Autumn. Just a follow up to this, I've been exchanging emails off list with Michael regarding this. I decided, as an experiment, also to install emc from the live CD as an alternative boot selection with an interesting result :) On Linux install from Live CD - it works, but not quite as per the instructions on the wiki page. I need to have to have emc2-dev axis running, then open another terminal session, redo . scripts/emc-environment and then cd lib/python/gladevcp gladevcp gladevcp-test.ui and Hooray! It opens :) BUT On existing Ubuntu 10.04LTS with emc installed via http://linuxcnc.org/lucid/emc2-install.sh and emc2-dev installed via git, and then sudo apt-get install python-gnome2 python-glade2 python-numpy python-numpy python-imaging python-xlib python-gtkglext1 python-configobj python-gtksourceview2 It does NOT work. It fails with the RTAPI: ERROR: could not open shared memory (errno=2) Segmentation fault Only conclusion I have is there must still be something missing or incorrect in either the git version of emc2-dev or in the emc2-install.sh package. Steve Blackmore -- -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] G-Code files needed
On Sun, 2011-01-23 at 15:00 -0800, Neil Baylis wrote: If there's demand, I would consider other editors as well I'll put in a vote for KATE, the KDE editor. It already has G-Code highlighting, but, lacking EMC2's language features, it's pretty much useless. http://kate-editor.org/ -- Ed http://softsolder.com -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] G-Code files needed
I cast my vote for Notepad++ :-) http://notepad-plus-plus.org/ DougM On Mon, Jan 24, 2011 at 3:54 PM, Ed Nisley ed.08.nis...@pobox.com wrote: On Sun, 2011-01-23 at 15:00 -0800, Neil Baylis wrote: If there's demand, I would consider other editors as well I'll put in a vote for KATE, the KDE editor. It already has G-Code highlighting, but, lacking EMC2's language features, it's pretty much useless. http://kate-editor.org/ -- Ed http://softsolder.com -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] G-Code files needed
On Mon, Jan 24, 2011 at 4:11 PM, doug metzler doug.metz...@gmail.comwrote: I cast my vote for Notepad++ :-) http://notepad-plus-plus.org/ DougM I happen to have a windows box, with notepad++. I know nothing about it's plugin architecture, but I'm sure I can find out. Let me take a look. Neil -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] DIY BLDC Motors - FCM8201,2 and IRAMS
On 01/23/2011 02:14 PM, emc-users-requ...@lists.sourceforge.net wrote: Yes on the surface this looks like an esc project. However the fact that it has multiple interfaces supported such as CAN, i2c, pwm and serialmean that it can certainly send and receive the sort of data you are looking for. I am well aware that an esc is different than a cnc driver, however Piotr is a control engineer thus the commutation routines that he is developing are the latest and greatest in all respects. I have already discussed the idea of using it for cnc and he is certainly happy to help. The nice thing about Piotr is that he is not an amateur coder, thus adding pid loops around his various routines will not be an exercise in trying to unravel a ball of wool. If he can write code to use a shaft encoder to feedback position, and use that information (adjusted for 1000, 2000, 4000, or whatever counts per revolution) to fudge the equivalent of a hall effect sensor feedback, then YES, this would make a good BLDC controller for CNC. The next link shows a 6500 watt BLDC motor for around $99. That's around an eight horsepower motor for around $100 bucks. .130Kv times 50 Volts gives 6500 RPM at 50V no load. I don't think you could build one for near that, though I've thought about that option. For bigger stuff you might try the armature from a vacuum cleaner motor. I've never tried taking one apart, but they are supposed to be universal AC/DC motors, so they might have laminations that would work. For the bell that you mount the magnets into, a stamped steel hole saw might come in a useable size. http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=5142 To give you an idea of how much power one of these motors supplies, some guys put 3 of them into a go-cart, and drive it through a centrifugal clutch. Watch the video, then look at the smiles when they come back in from a run! http://www.youtube.com/watch?v=vwODx028_Jw -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] DIY BLDC Motors - FCM8201,2 and IRAMS
On Monday, January 24, 2011 11:00:38 pm cogoman did opine: On 01/23/2011 02:14 PM, emc-users-requ...@lists.sourceforge.net wrote: Yes on the surface this looks like an esc project. However the fact that it has multiple interfaces supported such as CAN, i2c, pwm and serialmean that it can certainly send and receive the sort of data you are looking for. I am well aware that an esc is different than a cnc driver, however Piotr is a control engineer thus the commutation routines that he is developing are the latest and greatest in all respects. I have already discussed the idea of using it for cnc and he is certainly happy to help. The nice thing about Piotr is that he is not an amateur coder, thus adding pid loops around his various routines will not be an exercise in trying to unravel a ball of wool. If he can write code to use a shaft encoder to feedback position, and use that information (adjusted for 1000, 2000, 4000, or whatever counts per revolution) to fudge the equivalent of a hall effect sensor feedback, then YES, this would make a good BLDC controller for CNC. The next link shows a 6500 watt BLDC motor for around $99. That's around an eight horsepower motor for around $100 bucks. .130Kv times 50 Volts gives 6500 RPM at 50V no load. I don't think you could build one for near that, though I've thought about that option. For bigger stuff you might try the armature from a vacuum cleaner motor. I've never tried taking one apart, but they are supposed to be universal AC/DC motors, so they might have laminations that would work. For the bell that you mount the magnets into, a stamped steel hole saw might come in a useable size. http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=5142 To give you an idea of how much power one of these motors supplies, some guys put 3 of them into a go-cart, and drive it through a centrifugal clutch. Watch the video, then look at the smiles when they come back in from a run! http://www.youtube.com/watch?v=vwODx028_Jw Why the clutch? And its set so high that the cautious way he is driving, that clutch will be 100% toasted in half an hour. Don't those motors have any starting torque at all? I don't believe it is even driving the rear wheel on the far (left) side at all, so he is showing a lot of useless wheel spin in the right turns that he thinks is cute. Give me a solid rear axle to drive both wheels and I could have that rig for a low cal breakfast with a 6.1 CID McCullough engine for power. Even at my age. Now the other video of the 70kw kart is more along lines of what I was driving in the early '60's. Wheel spin not quite at will, but still 25 mph faster (on gasolene, it burnt that and booze/dynamite almost interchangeably when I could afford the castor oil, that was even more fun...) than the Olds 98 that towed me to get it started. No clutch, it needed about a 15 mph tow to get that rotary valved 2 stroke to fire good enough to pull away from that Olds. Top speed (circa 130 mph) was about the same on either fuel because it was a deflector head engine and they run out of breathing room at about 7700 rpm regardless of the exhaust tuning. But it was noticeably easier to steer with the throttle in the corner when running on booze dynamite. The ultimate rush, 130 mph with your butt 1.5 off the blacktop. ;-) -- 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) Without adventure, civilization is in full decay. -- Alfred North Whitehead -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] DIY BLDC Motors - FCM8201,2 and IRAMS
On Mon, Jan 24, 2011 at 11:21 PM, gene heskett ghesk...@wdtv.com wrote: Why the clutch? And its set so high that the cautious way he is driving, that clutch will be 100% toasted in half an hour. Don't those motors have any starting torque at all? Precisely, they have max torque at stall but that comes from tons of current that would burn out the motor or the controller, so the clutch avoids that. You can see smoke coming out of the clutch on some shots. -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT - email recommendations
Jon Elson wrote: Well, the original problem was that Thunderbird wasn't working without HUGE pauses in operation. But, now that I've build a new profile, it is back to working fine. So, I think I will just stay with my own SMTP server and Thunderbird. Sometime I will have to try out some of the other suggestions. OK, an update. If you just use Thunderbird for email, it works fine. If you also use it for newsgroups, and subscribe to a newsgroup with many messages archived by your news service, it massively screws up Thunderbird. I subscribe to rec.crafts.metalworking, and giganews has over 600,000 messages from back to 2003. I just tried out knode, and it works fine, and is smart enough to only download a weeks worth (or other settable range) of messages. I'm so used to Thunderbird, knode still seems a bit odd and different, but it WORKS! Jon -- Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
