Re: [Emc-users] Very neat idea of controlling the Z-level
On 17 December 2011 20:16, Michael Haberler mai...@mah.priv.at wrote: actually it probably can go into a kinematics module, like below Ideally you would pick up 3 fiducial marks and do a full 3D tilt and rotation compensation. (There already is a kins which corrects for somebodies twisted machine frame) -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Learn Windows Azure Live! Tuesday, Dec 13, 2011 Microsoft is holding a special Learn Windows Azure training event for developers. It will provide a great way to learn Windows Azure and what it provides. You can attend the event by watching it streamed LIVE online. Learn more at http://p.sf.net/sfu/ms-windowsazure ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Very neat idea of controlling the Z-level
On 17 December 2011 20:45, Viesturs Lācis viesturs.la...@gmail.com wrote: It seems to me that creating a mesh from probed points will require to extend EMC to be able to do so and then there needs to be some tool that reads that mesh and tells, what is Z in a given X,Y point. This is difficult, as there are not many ways into a running kins. I don't think file-access is possible, and whilst you _could_ pass a pointer to an array in a HAL pin, I don't think you _should_. The solution is probably to store the shape in an array inside the kins, and to have a data strobe and offset pin, so that the kins can populate it's own shape array during the probing process. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Learn Windows Azure Live! Tuesday, Dec 13, 2011 Microsoft is holding a special Learn Windows Azure training event for developers. It will provide a great way to learn Windows Azure and what it provides. You can attend the event by watching it streamed LIVE online. Learn more at http://p.sf.net/sfu/ms-windowsazure ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Very neat idea of controlling the Z-level
On 17 December 2011 21:01, Michael Haberler mai...@mah.priv.at wrote: and, of course, come up with a good interpolation algorithm - but there's a large body of work there; for instance that is exactly the stuff the GIS folks use for map coloring from discrete digital height models Linear interpolation from a regular mesh is trivial. Finding a polynomial least-squares surface fit is mathematically straighforward, but there is a huge tendency to over fit the data. For an irregular mesh you would probably need to re-intepolate to a regular mesh (Delaunay triangulation, followed by re-interpolation to a quadratic grid) I already have code for all this, as engine maps and geographical maps need many of the same tools. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Learn Windows Azure Live! Tuesday, Dec 13, 2011 Microsoft is holding a special Learn Windows Azure training event for developers. It will provide a great way to learn Windows Azure and what it provides. You can attend the event by watching it streamed LIVE online. Learn more at http://p.sf.net/sfu/ms-windowsazure ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] rtapi kernel must be loaded?
On 18 December 2011 04:36, alice aliceyou...@localnet.com wrote: i go to the terminal to load rtapi as docs say cd emc2 halrun, then it gives error consistig of rtapi kernel not loaded. You don't need to cd to emc2, and halrun needs to be a command on a line by itself. i would include the file but ive not yet figured out how to save it to send it to the paste bin It's called pastebin because you paste text there using the copy/paste method. Select the text in the terminal window (with the mouse) and press Copy (Ctrl-C) then select New Paste in the Pastebin site click in the window of the window, and click Paste (Ctrl-V) -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Learn Windows Azure Live! Tuesday, Dec 13, 2011 Microsoft is holding a special Learn Windows Azure training event for developers. It will provide a great way to learn Windows Azure and what it provides. You can attend the event by watching it streamed LIVE online. Learn more at http://p.sf.net/sfu/ms-windowsazure ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Very neat idea of controlling the Z-level
On 18 December 2011 04:38, BRIAN GLACKIN glackin.br...@gmail.com wrote: I am not good with programming, but I work with surfaces in mining applications all the time. Why not create an XY grid of the z surface and then load that into EMC much like one loads in a map for backlash. This is the basic idea, the fun comes in the implementation. Screw compensation uses a file loaded once during initialisation, and (as far as I know) can't be changed on the fly with EMC2 running. I am fairly sure that reading a file into a running kinematics module is likely to be a problem (the kins module runs in real-time, and can't hang about waiting for file access). You probably would want the option to load a shape file during initialisation, though. How do you cope with users who don't give you a neat square grid? Or those who, because of the shape of their work, can't map a full grid. The implementation I have come up with would add X-in Y-in and Z-in pins to the kins module for data-entry, and would be controlled by reset, learn and active pins. reset simply clears the (XYZ) data. When learn is toggled the current (XYZ) values are added into the random point cloud. When active is set the machine runs off and converts the point cloud to a regular cartesian grid covering the whole machine. Testing would be required to see if this code can run fast enough. It might have to be re-entrant and share the processing over many cycles. With this scheme it would be possible for a userspace component to read data from a file and load it into the kins. For bonus points the system would be plane-aware, so allowing it to be used to correct bow and skew in a lathe, or table droop. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Learn Windows Azure Live! Tuesday, Dec 13, 2011 Microsoft is holding a special Learn Windows Azure training event for developers. It will provide a great way to learn Windows Azure and what it provides. You can attend the event by watching it streamed LIVE online. Learn more at http://p.sf.net/sfu/ms-windowsazure ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Encoder Discs, possible collective order
I have been given a quote for electrochemical machining of an encoder for my project. http://www.photofab.co.uk/index.php/services/chemical-etch-photo-etch/ There is a £95 setup charge, then another £100 for a sheet of parts. I get 25 of my design (75mm dia) on a sheet, but only need 6 or so. The material I want to use is 0.3mm 304 stainless. I can add different designs to the sheet for no extra charge. Does anyone have anything intricate that they need making from stainless shim like this? -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Encoder Discs, possible collective order
On 22 December 2011 16:01, Roland Jollivet roland.jolli...@gmail.com wrote: These guys are on your turf too; http://www.precisionmicro.com/ This is an interesting process I hadn't heard of before: http://www.precisionmicro.com/49/processes/laser-evolved-electro-forming---leef -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Encoder Discs, possible collective order
On 22 December 2011 16:45, Anders Wallin anders.e.e.wal...@gmail.com wrote: a dream project of mine would be a telescope mount. To minimize tracking error one should measure the rotation directly on the geared axis (not the motor) and one wants maybe 4 million pulses (22 bits) per rev for that. That sounds like a job for a resolver, rather than an incremental encoder. I am not sure which chip the Pico converter uses, but the same family go up to a claimed resolution of 2 arc minutes. http://uk.rs-online.com/web/p/synchro-resolver-to-digital-converter/7094709/ Not inexpensive, though. Couple that with a multipole resolver and you might get what you want. want an encoder with 12 to 14 bits of sine-shaped counts, i.e. up to 16k-counts/rev. How big a circle would that require? That depends mainly on the sensor. The sensor I am intending to use is 75 lines per inch, so 16k would be a 68 inch circle.. There is a 150 lpi version, for a mere 3-foot encoder. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Calling a part file from another file
On 23 December 2011 20:13, BRIAN GLACKIN glackin.br...@gmail.com wrote: 2. If yes, what is the proper syntax. What you end up calling is a subroutine inside a file of the same name. So, the file foo.ngc would need to be in the path defined in your INI file, and would need to contain Ofoo sub ... Ofoo endsub You then call it from a different file with Ofoo call -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Making emc's backtrace show a line as wide as the (small) bit is cutting.
On 25 Dec 2011, at 03:46, gene heskett ghesk...@wdtv.com wrote: y current .ini base_period values are in the 35-40 u- second range. Is there enough processing time on a 1400mhz athlon to process that w/o any skips? Or would this be a case where a longer base period would actually give it more time to keep up? I don't think you need to worry about it, but you can look at the thread execution period in show hal configuration to check -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Parport
On 25 Dec 2011, at 15:07, gene heskett ghesk...@wdtv.com wrote: oadrt probe_parport #loadrt hal_parport cfg=0x378 out loadrt hal_parport cfg=0xd000 out--this line setp parport.0.reset-time 2000 Do you have the addf parport.N.write base-thread line for each port? -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Making emc's backtrace show a line as wide as the (small) bit is cutting.
On 25 Dec 2011, at 16:49, gene heskett ghesk...@wdtv.com wrote: The DIR column assignment seems backwards. It does always look that way, but is because the value of a parport pin is an output from the driver in to HAL. And vice-versa. Tracking the encoder counts should take very little extra time, the pin values are already in HAL. -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Syncronize speed of 5 VFD using MESA and EMC.
On 25 December 2011 21:52, himanshu bhatt bhatthiman...@gmail.com wrote: i just need to syncronize their speed only. How well do they need to be synchonised? What I would do, I think, is run one motor as a master in closed-loop speed control, then slave the other motors to its encoder counts in closed-loop position control. The the slave motors will try to stay in exact phase with the master. You will have to write the HAL for this yourself, but it will look like a combination of 1x closed-loop speed control and 4x standard servo control, but with the position commands from the master encoder, not an EMC2 pin. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 5-axis table-table kinematics: G54 offsets
On 26 Dec 2011, at 15:06, Rudy du Preez r...@asmsa.co.za wrote: I tried to use a G54 in the GCODE for a C-axis offste - it did not seem to work. I will try again. As far as I know G54 only selects a coordinate system. If you want to put an offset into that (or any other) coordinate system you need to use G10. G92 is probably closer to what I think you want. -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Another off the wall thought
On 27 December 2011 17:53, gene heskett ghesk...@wdtv.com wrote: Not having any really effective way to speed adjust this induction motor so the spindle can be effectively stopped in the last 1/4 turn to the end point, from perhaps 1000 rpm when doing small threads, may be making the problem worse in my mind than it is in practice. Indeed you are. G76 simply stops moving in Z, rapids out, and returns to the start of the thread. No need to stop/start the spindle. You get a partial-turn run-out at the end of the thread, but the full thread can go basically as close to the shoulder as you dare. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 5-axis table-table kinematics: G54 offsets (Viesturs)
On 27 December 2011 18:38, Rudy du Preez r...@asmsa.co.za wrote: I want to be able to use offsets of C (and possibly A) while in world mode. Whereas it works OK in joint coordinates with trivkins, it seems to function differently in world mode using XYZCkins What does XYZCkins do that trivkins doesn't? Is it creating a virtual C-axis, or do you have a physical one? I assume by your statement that you see a rotation in your example in trivkins that you are talking about a physical C-axis? I am nowhere near my EMC2 machines until the 3rd, so this is conjecture but: I am fairly sure that coordinate system offsets are stored as an axis set, not a joint set. If you can run a non-trivial mechanism with cartesian offsets then that suggests that all the numbers inside the kins module are un-offset machine coordinates, and that G54 et al are added on post-kins. (and subtracted in the inverse kins). This may have a bearing on your assumptions. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 5-axis table-table kinematics: G54 offsets
On 28 Dec 2011, at 05:52, Rudy du Preez r...@asmsa.co.za wrote: If I use a G55 of say G55 c45 nothing happens. ... I hope the problem is now clearer and look forward to some response Yes, I now understand that you want to pass a tool XYZAC to the G code and have EMC2 convert the A and C to movements in joints 3 and 5. I am assuming that when you say g55 c45 that is a shorthand for g10 L2 C45 / g55? I am fairly sure that an axis word on the same line an a G55 is simply interpreted as a movement, and will be fast or slow dependent on whether G1 or G0 is active. I think the complication in your case is that you want to index explicitly in joint 5 not in World C to move from vane to vane, the G55 offset can only ever be in tool angle. I think that your vane-to-vane indexing will need to be an extra pin input into your kinematics routine. (or alternatively an offset component in the HAL between the position-command and the stepgen or pid. ) -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] stepper power supply
On 28 Dec 2011, at 15:52, kqt4a...@gmail.com wrote: Would someone elaborate on this just a bit I am not questioning their response I just do not understand it I suspect that the 60% might be a diversity factor. www.wikipedia.org/wiki/Diversity_factor -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Transformer Question
On 29 December 2011 19:36, Clint Washburn cl...@clintandheidi.com wrote: I am in the process of building a power supply for my lathe and need a big transformer for for the powersupply. Are you sure you need a transformer? You do need one if you want to ground-reference the servo power, but it might equally be possible to float the servo windings, as long as the drive doesn't mind. My servos are running from an 8i20, and according to Pete that doesn't care about the relative potential of logic and DC bus grounds. (but you do need to be aware that both sides of the DC bus are very hot indeed. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] or4 ?
On 30 December 2011 12:47, Viesturs Lācis viesturs.la...@gmail.com wrote:
http://git.linuxcnc.org/gitweb?p=emc2.git;a=blob;f=src/hal/components/or2.comp
Now last line is:
FUNCTION(_) { out = in0 || in1; }
For or4 it should be:
FUNCTION(_) { out = in0 || in1 || in2 || in3; }
To install it in existing EMC, You need:
1) get EMC source from Git, just follow instructions here:
There is no need to get the source for such a simple function, you can
use sudo comp --install or4.comp on a standard installation.
(I just tried it)
--
atp
The idea that there is no such thing as objective truth is, quite simply, wrong.
--
Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex
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costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox
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Re: [Emc-users] hal_button as confirm data
On 1 Jan 2012, at 15:38, Spiderdab 77...@tiscali.it wrote: As there isn't an if statement as an hal rt component, how can i write this logic? I really can't realize.. maybe using sample_hold? (but i tried and it doesn't seem to work..) Spinbutton is Float, SampleHold is Int. You can do what you want with a mux2 with the output wired back to one of the inputs. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] hal_button as confirm data
On 1 January 2012 16:47, Spiderdab 77...@tiscali.it wrote: Possibly 'cause my-kins-pin is a I/O pin? Yes, that will be a problem. I suggest you set it as an input pin, and insert code to trap and over-ride a zero value. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] hal_button as confirm data
On 1 January 2012 19:56, Spiderdab 77...@tiscali.it wrote: Curiosity: i copied the setup as IO from the tripod kins. do you know why that was set in that way? No, it puzzles me. There was a wholesale switch of many parameters to IO pins at some point. It does mean that you can net them as outputs, and you can still setp them in the HAL, so you gain a bit over parameters, and lose nothing in comparison, but many make much more sense as straight inputs. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Surface-Mount
I have some surface-mount opto-sensors which have pads on the underside, but no pins as such. Can anyone suggest how to solder them to PCB pads? I currently have a soldering iron, blowtorch, gas cooker and a hairdryer, though I am not averse to buying other tools. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Surface-Mount
On 2 January 2012 15:46, Peter C. Wallace p...@mesanet.com wrote: A hair dryer is close but a little too cool. A hot air gun (the type used with heat-shrink tubing) will work. OK, one has been on my to-buy list for a while, but so far the hairdryer has worked. You will also want some solder paste I do have solder paste. Carefully hand place the part and heat from behind with the hot air gun. To add to the fun, I have back-mounted optos too.. I will see how I get on with the hot air gun. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Surface-Mount
On 2 January 2012 16:01, Peter C. Wallace p...@mesanet.com wrote: To add to the fun, I have back-mounted optos too.. That does add to the fun... I hope they are not back to back. Guess what… One hopeful point is that I made the board pads oversize, so I might even be able to use a soldering iron. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] hal taking machine down
On 2 January 2012 18:46, Kenneth Lerman kenneth.ler...@se-ltd.com wrote: That will be the third such machine I have. It does have built-in video, but you don't have to use it. However, there is no reason not to use the built-in video with that card, it works fine. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] hal taking machine down
On 2 January 2012 19:12, gene heskett ghesk...@wdtv.com wrote: MBD-I-D525MWV 1 D525MWV Mini-ITX Motherboard 85.00 Does that include the lpt breakout kit? No need, the D525 has the LPT on the back panel, it's the purple one here: http://www.newegg.com/Product/Product.aspx?Item=N82E16813121442 Disks are hens teeth ATM, although I hear production is ramping back up after the tsunami now. I like these, they plug straight into an SATA socket: http://www.suntekstore.co.uk/goods.php?id=10010116utm_source=gbuk 8GB is plenty for Ubuntu + EMC2, including the source and development dependencies. 32GB costs about 3x as much. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] hal taking machine down
On 2 January 2012 19:32, gene heskett ghesk...@wdtv.com wrote: On Monday, January 02, 2012 02:31:38 PM andy pugh did opine: However, there is no reason not to use the built-in video with that card, it works fine. And this is the foxcon board? No, this is the Intel BOXD525MW (but I think that BOX might just mean it is in a box) -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] hal taking machine down
On 2 January 2012 19:36, gene heskett ghesk...@wdtv.com wrote: http://www.suntekstore.co.uk/goods.php?id=10010116utm_source=gbuk It may be, but how long does it work with ext3? I would rather have rotating storage I can count on for a year or so. I have been using an 8GB one of those to compile EMC2 several times a night for well over a year. I thought it had died once, and bought a replacement, but the problem turned out to be that a log file had filled the entire drive. (my fault, printing a pin value to dmesg every mS) -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Surface-Mount
On 2 January 2012 19:59, Mike Payson m...@dawgdayz.com wrote: Skillet/hotplate soldering works great for those situations: http://www.youtube.com/watch?v=Uov0SPHKcnk How do you spell Solder in the US? All the videos seem to pronounce it sodder whereas I have only ever heard it pronounced solder or sowlder in the UK. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] hal taking machine down
On 3 January 2012 12:49, kqt4a...@gmail.com wrote: If I were wanting to build a new pc I would agree but I would like to improve the reliability of a decent machine I occasionally get rtai errors Will the Mesa hardware do this I have only stepper motors With Mesa/Pico cards you don't need the base thread, but that doesn't necessarily mean that you won't get troublesome delays in the servo thread. (though they will be a much smaller percentage of the thread period) You will, however, gain a lot more io pins, and a much lower granularity in step timings, which might lead to improved performance. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] hal taking machine down
On 3 January 2012 14:30, kqt4a...@gmail.com wrote: Is mesanet.com the only source for the mesa hardware it appears that www.cnc-ready.at no longer exists. http://www.duzi.cz/shop_cnc/ still works though. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Compile - install new kinematic
On 4 January 2012 09:03, Tomaz T. tomaz_...@hotmail.com wrote: ERROR: Module hal_lib is in use by my5axiskins ERROR: Module rtapi is in use by hal_lib ERROR: Module rtai_math does not exist in /proc/modules ERROR: Module rtai_sem is in use by rtapi ERROR: Module rtai_fifos is in use by rtapi ERROR: Module rtai_sched is in use by rtapi,rtai_sem,rtai_fifos ERROR: Module rtai_hal is in use by rtapi,rtai_sem,rtai_fifos,rtai_sched This sequence normally means that RTAPI has failed to quit cleanly from a previous session, and normally requires a reboot. I can't tell whether the problem is that my5axiskins crashed and won't release RTAPI, or whether you are trying to load two kinematics modules in the HAL file. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Riser for Intel Mini-ITX
I finally found a PCI riser that works with the mini-ITX Intel boards (D510 and D525) It puts the Mesa card over the motherboard, with the connectors facing up. http://www.ebay.co.uk/itm/PCIx1-2U-32Bit-Riser-PCITX4-2-Rev-B-/110793930515 The previous 2 I tried stopped the machine booting, and the flexi-one started losing wires. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Riser for Intel Mini-ITX
On 4 January 2012 23:48, Eric Keller eekel...@psu.edu wrote: do you have any pictures of it set up? https://picasaweb.google.com/lh/photo/CQTCSBXP42w4qc8viPm_ztMTjNZETYmyPJy0liipFm0?feat=directlink (In that picture is the D510MO motherboard, PicoPSU, DOM SATA drive, 12V CPU, Arduino, resolver board, Mesa 5i23, Mesa 7i64 and Mesa 7i44, mainly mounted on the back of the touchscreen. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Riser for Intel Mini-ITX
On 5 January 2012 01:59, Kent A. Reed knbr...@erols.com wrote: Did the flexible riser work for you before it started losing wires? How is it that it started losing wires? Do you mean conductors were breaking internally in the cable? breaking at the connector? . It was fine, though meant that the board needed a moderately complicated bracket. The problem started when I was reconfiguring between 5i25 and 5i23 a few times a week when doing driver work. The wires are mulitistrand soldered to small PCBs with no strain relief. Once one went, others kept following (I resoldered 15 or so, but more broke than got fixed every time) -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] An alternative way to make encoders.
I recently got some Avago AEDR8300K encoder sensors. These have two detectors in a small SMT package for quadrature in one device. http://www.avagotech.com/pages/en/motion_control_encoder_products/incremental_encoders/reflective_encoders/aedr-8300-1k0/My plan was to laser-print a target onto adhesive vinyl and use that as the target, but unfortunately it seems that these sensors require a very shiny target (specular reflectance 60) with not-shiny parts. White paper is not there to these sensors. Polished aluminium is very much there but so is polished aluminium with black marks on. After some experimentation I found that polished aluminium with an etched pattern works very well, though. So I CNC-marked a polished encoder ring and etched it in FeCl. This looks like it is going to work very well indeed, and was a lot less trouble than milling (and more suited to the dimensions of the part)http://youtu.be/c1zCG-uPaoM I will see how the pen-drawn version works out, but the idea ought to work fairly well (and at much finer pitch) with photo-resist methods. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Riser for Intel Mini-ITX
On 5 January 2012 10:39, Mark Wendt mark.we...@nrl.navy.mil wrote: How do you deal with the enclosure, getting the peripheral card ports so that they poke through to the exterior? Mainly by putting everything in one big box. I think it makes sense to treat the PC board as just another component, rather than as a computer, to put in a computer case. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Riser for Intel Mini-ITX
On 5 January 2012 13:41, Edward Bernard yankeelena2...@yahoo.com wrote: How do you deal with cooling issues having all that gear in one enclosure? I don't know yet. The actual servo drives will be external (and near the motors) though, so the only heat in there should be from the low-power motherboard. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Riser for Intel Mini-ITX
On 5 January 2012 16:07, Dave e...@dc9.tzo.com wrote: The Intel bios has a display that will show you the CPU core temperature so you can get an idea of how efficiently your enclosure is keeping your PC boards cool. I think that there is a HAL module that links in to lmsensors to allow you to view such things inside EMC2. http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?ContributedComponents#Motherboard_Sensors -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Riser for Intel Mini-ITX
On 6 January 2012 10:27, Viesturs Lācis viesturs.la...@gmail.com wrote: How is 5i23 mounted? I do not see that it is fixed anywhere. In that picture it is just sat there in the PCI connectors. Since then I have added a bracket from the mounting holes onto the aluminium mounting plate. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Good latency results
On 7 January 2012 09:59, Alastair D'Silva alast...@d-silva.org wrote: If someone could point me to how to add this to the wiki, it would be appreciated. The page is here: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Latency-Test You may see a small link at the bottom edit text of this page but if you don't then you would need to follow the instructions here: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?BasicSteps -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: HDMI to VGA Was RE: Ideal Atom?
On 7 January 2012 23:30, Ben Jackson b...@ben.com wrote: N. DVI has pins in it (the 4 more widely spaced ones in a square on one end) which carry VGA. Most (maybe all) display cards present normal analog VGA signals on those pins. There are devices (DVI-D) which don't have those pins and are digital only. HDMI to DVI-D should be easy then, and I would much rather drive an LCD with DVI than pretend it has a raster and send VGA. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] An alternative way to make encoders. (Peter Blodow)
On 8 January 2012 01:33, Martin Patton mart...@gmail.com wrote: What rotary table is that on your mill? Did you make the adapter for the stepper? I want one of those. The table is one of these: http://www.ebay.co.uk/itm/RDGTOOLS-LATEST-HV4-ROTARY-TABLE-4-100MM-/290630172909 Though it isn't the greatest tool. The rear face isn't square to the front face, so I can't adjust out as much slack as I would like, or it seizes up at the tight point. Here are pictures of a model of the stepper adaptor: https://picasaweb.google.com/lh/photo/gv6Pi0U9dr90Ca1YrMce89MTjNZETYmyPJy0liipFm0?feat=directlink https://picasaweb.google.com/lh/photo/u2njch16K87z8wZwv7JFZtMTjNZETYmyPJy0liipFm0?feat=directlink https://picasaweb.google.com/lh/photo/anaXsKNU0-Qc3MU_fofaWdMTjNZETYmyPJy0liipFm0?feat=directlink -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] An alternative way to make encoders. (Peter Blodow)
On 8 January 2012 14:02, gene heskett ghesk...@wdtv.com wrote: Because the coupling is replacing the handwheel, its placement controls the end play of the worm too I still am not sure which rotary he was on about, but as the title refers to encoders, and I started that thread with a video of my rotary drawing an encoder in pen, I think it might have been mine. I decided that the original bearing and endfloat arrangement was too crude for a motor drive, so if you look at the pictures I posted, I re-made the whole eccentric housing, with a pair of angular contact bearings for end-float (it has to take cutting forces when moving, after all) and a needle roller to hold the worm in mesh. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] An alternative way to make encoders.
On 8 January 2012 14:59, Joachim Franek joachim.fra...@pibf.de wrote: A temperature treatment of the lacquer at 190°C will result in durable inscriptions or graphics having a blackish- brown color It is worth remembering, though in my case I was much more concerned about reflectivity than colour. A black/brown shiny layer would not work. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Commanded positions
On 9 January 2012 05:36, Farzin Kamangar farzin.kaman...@gmail.com wrote: commanded position is not right, but the actual position is correct. I was looking for an interface from emc.stat which can show the correct commanded position. Do you want to see the end-point of the current move? That isn't quite the same as the commanded position as each move is broken down into millisecond-by-millisecond steps. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] running headless on my ASUS AT5NM10-I MB (Intel Atom D510 cpu)
On 9 January 2012 18:20, Jon Elson el...@pico-systems.com wrote: and use any command-line program Keystick? Keystick, a character-based screen graphics program suitable for minimal installations (without the X server running). http://linuxcnc.org/docs/html/gui_keystick.html -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Compile - install new kinematic
On 9 January 2012 18:34, Francesca Sca fancy_...@yahoo.it wrote: cp armkins.ko /usr/realtime-2.6.32-122-rtai/modules/emc2/ armkins.ko in /home/cnc/emc2-dev/rtlib NOT FOUND! That seems a little odd. Are you running . ./emc2-dev/scripts/emc-environment before running comp? It looks like armkins is being installed to the installed version of emc2, not to the run in place version. As you appear to have an emc2-dev, if that is the full source tree, then you might want to compile with make rather than comp -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: HDMI to VGA Was RE: Ideal Atom?
On 10 January 2012 19:07, Kirk Wallace kwall...@wallacecompany.com wrote: I much prefer d-sub connectors. They're inexpensive, the ear screws are a positive closer, strain relief is robust, Also 7A per pin and 250V rated. I have mentioned them before, but PowerCON and Speakon connectors are very solid and high quality for the price. http://uk.rs-online.com/web/p/loudspeaker-connectors/0385165/ -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Correcting for workpiece warpage.
On 11 January 2012 05:53, gene heskett ghesk...@wdtv.com wrote: I've read the pages about mapping screws, but ANAICT, that can only correct the same axis for errors and wear in that axis's drive, but I don't see a way to make z move as y moves. Sounds like a job for probekins.. http://thread.gmane.org/gmane.linux.distributions.emc.user/31345/focus=31389 -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Servo drive?
On 11 January 2012 08:40, Viesturs Lācis viesturs.la...@gmail.com wrote: I have 3 servo motors and I am looking for appropriate servo drives for them. I have a serious problem finding a servo drives for these motors. I suppose you could try making your own? http://uk.rs-online.com/web/p/motion-motor-control/6880723/ It should be possible to run one of those from a 3ppwm on a Mesa card The Granite drives should give you 3000rpm, is there any chance that that is enough? FWIW I am intending to run my 600W / 300V motors with 8i20s, but that is mainly because I have some to experiment with. I don't yet know how well it is going to work as I have been distracted by other projects. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Correcting for workpiece warpage.
On 11 January 2012 10:46, Viesturs Lācis viesturs.la...@gmail.com wrote: I just seem to have skipped, how exactly the surface mesh file is created by probing the surface in certain points. In this case gene can simply hand-edit an STL file. To generate one from probe data, one option would be Michael's probe2stl.py http://git.mah.priv.at/gitweb/emc2-dev.git/tree/ebc4a0b398e3fbf5324de3bb4d07e18fd543b5e3:/src/emc/kinematics -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Servo drive?
On 11 January 2012 11:58, Viesturs Lācis viesturs.la...@gmail.com wrote: http://docs-europe.electrocomponents.com/webdocs/0dca/0900766b80dca34c.pdf On page nr 9 I found a scheme of Typical application connection. Do I understand correctly that anything within the blue frame already is on that board? Yes. I would suggest opto-isolators between the IRAMS and the 5i23 or whatever, though. Anyone willing to consult me? I made mine do this: https://picasaweb.google.com/108164504656404380542/Gibbs#5469721364857131746 So might not be the ideal consultant Mk2 had heatsinking, but I think that died too: https://picasaweb.google.com/108164504656404380542/Gibbs#5471910659108799346 I can't recally if it was just the surge-limiter that went, or if it died completely when I was trying to use it as a VFD with an ordinary induction motor. EMF constant * RPM + Peak current * Terminal resistance = Voltage Ah, yes, I forgot to consider the ohmic losses, 1500rom is a bit pedestrian. Any chance You might do some basic tests in a nearest future? That would give me some idea, if 8i20s might be used for the task. I am a bit puzzled. The 8i20 is a 2.2kW drive, with up to 30A. Pete is concerned that 1A (and currents from there to zero) are a bit small for the internal calculations. However, a 750W motor is good proportion of the power rating, if not the current rating. Matt Shaver is running a 1kW motor with a max current of 7.5A on an 8i20, though that is a spindle application, so might not be directly comparable. I am going to be away from all computers for 6 weeks at the end of March, if you are not sorted out by then then I might be able to loan you one of my 8i20s. (sourceforge blocked this message the first time I sent it, so I have cc-ed Visteurs directly. I don't know if this will get through to the list) -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Servo drive?
On 11 January 2012 14:11, Viesturs Lācis viesturs.la...@gmail.com wrote: Yes. I would suggest opto-isolators between the IRAMS and the 5i23 or whatever, though. Are You saying that optoisolator will not disturb PWM signal? Somehow I am convinced that it will... It shouldn't, much, if you have a fast enough one. BTW I was warned that there should be considered protection for the board from overvoltages, coming from motors. Is that correct and how is that usually implemented? Freewheeling diodes. You can see one across every power stage in the H-bridge. Effectively there is a 3-phase bridge-rectifier built into the H-bridge, and any voltages bus voltage are shuttled into the bus caps. Those need to be big enough to absorb the current without pushing the voltage too high. The first picture is so obvious that I even I understand, but I have difficulties with the second picture - what should I look at? Well, it just shows that I added a huge heat-sink for the drive and rectifier. Thank You for the offer! But then I have to get You a replacement, if I blow it up... Yes, what my motorcycling friends call Big boy's rules (you crash it, you fix/replace it) -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Correcting for workpiece warpage.
On 11 January 2012 19:30, gene heskett ghesk...@wdtv.com wrote: That sounds neat Kirk, and a hair dryer can supply the heat, I like that as I already have the milled flat wooden (and insulating) jig clamped up. So the question then is what kind of wax? Paraffin would soften a bit fast come summer heat IMO. Beeswax perhaps? Lakeside Cement, or Quartz Sticky Wax or similar. http://www.southbaytech.com/consum2.shtml (It's worth looking at the rest of the site, they make some nice, very specialised, machine tools. Like Acid Saws) -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Correcting for workpiece warpage.
On 12 January 2012 07:22, gene heskett ghesk...@wdtv.com wrote: Apparently my freebie copy of eagle has timed out, the screen it opens is about 75% transparent and extremely bleached out, rendering it unusable. Have you tried DesignSpark under Wine? Though gEDA might be a better bet, being native Linux. (I have never tried it) rant mode off I guess, I am resigned to tape, drafting mylar, photo-resist very dangerous chemistry if I want to design pcb boards No help on the chemistry, but your mill could hold a resist pen and draw tracks (HPGL to G-code would be necessary, I imagine it exists) or try toner-transfer. http://www.instructables.com/id/Cheap-and-Easy-Toner-Transfer-for-PCB-Making/ -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Servo drive?
On 12 January 2012 11:49, Viesturs Lācis viesturs.la...@gmail.com wrote: Ok, I think that I finally got it - the heatsink is under the board and only its very black side can be seen... Yes, that was the main change. How big was that motor? It was a 2HP motor. On reflection, I probably drained the capacitor and then bad things happened. I am not sure anymore that I do understand, what is inside AC servo motor. Normal DC brushless motors have permanent magnets, Many AC servos are identical in construction to brushless DC motors. There is a class of motor which is a true AC induction servo motor, but they are very rare now. http://en.wikipedia.org/wiki/AC_motor#Two-phase_AC_servo_motors Any AC servo motor you find on eBay will be basically a brushless motor with an encoder. What is the rated voltage of Your rectifier bridge? Yesterday I had a discussion with an electronics guy and he told me, that rectifier bridge should not get warm at all It didn't, but it had a mounting tab so it was convenient to bolt it to the heatsink too. BTW did You have something for the current sensing and over-current sense? I think I just put in the minimal components to make it wake up. I also wanted to ask about GND in the schematics in page 9 of the datasheet: http://docs-europe.electrocomponents.com/webdocs/0dca/0900766b80dca34c.pdf If I understand correctly, then V+ is the place to connect + from power supply, but I do not see GND connected to that chip anywhere. Ok, maybe it does not need GND for motor power, but I suspect there should be something, to which the incoming PWM signals are referenced to. The gates are AC-coupled through capacitors. So, DC power supply voltage is connected to V+ and the PSU gnd to the three VR(U/V/W) lines. Typically through current-monitoring shunt resistors. Some variants of the IRAMS chips have the shunt resistors built in. Vss is the logic ground. http://en.wikipedia.org/wiki/IC_power_supply_pin I don't think you want to connect the logic and PSU grounds in this case, especially if VR is rectified mains. That might actually be where I went wrong, on reflection. Can I suggest getting advice from someone with half a clue, rather than me? (Freewheel diodes) Thanks for the explanation, but I do not get, where to look for them? :) Yes, on the datasheet, each of the 6 IGBTs has a diode in parallel with it. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Servo drive?
On 12 January 2012 15:02, Viesturs Lācis viesturs.la...@gmail.com wrote: How do I determine, what size capacitors should be used? Right on the rectifier and also for those boot-strap capacitors? On the basis of maximum current draw and allowable ripple. And capacitor ESR too. What is that on the upper right corner? https://picasaweb.google.com/108164504656404380542/Gibbs#5471910659108799346 A connector for logic power, I think. It was over a year ago. Ok, thanks, now it makes sense! Do I need those shunt resistors for normal operation of the chip or are they meant just for feedback to controller? They are meant for feedback. Vss is the logic ground. Ok, great! Is it supposed to receive any additional 5V, 12V or something similar for logic power? Yes, Vdd. (Freewheel diodes) Ok, found them. So does it mean that it already is protected? It should be. But I still managed to break at least one. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Servo drive?
On 12 January 2012 15:27, andy pugh bodge...@gmail.com wrote: Is it supposed to receive any additional 5V, 12V or something similar for logic power? Yes, Vdd. On reflection, it might be wise to use a DC/DC convertor for Vdd, so that it has a floating, isolated logic power, that can be safely referenced to PSU gnd. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Servo drive?
On 12 January 2012 15:43, Viesturs Lācis viesturs.la...@gmail.com wrote: On reflection, it might be wise to use a DC/DC convertor for Vdd, And how much would such a convertor cost? I would need to convert 330VDC to 12VDC. I was meaning a 12 to 12 (or 12 to 15) one, like http://uk.rs-online.com/web/p/dc-dc-converters/6727408/ That gives the IRAMS board an isolated 15V supply, But, on the basis of the questions you are asking, you probably want to consider Pete's advice. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Correcting for workpiece warpage.
On 12 January 2012 17:55, gene heskett ghesk...@wdtv.com wrote: That still needs the chemistry. Lets just say that disposing of about 3 gallons of well spent ferric chloride, diluted with at least 1000 gallons of water, was sufficient to put a new medium sized cities sewage plant that had just been brought online a week before, into shutdown as the bronze impellers and housings of the pumps were destroyed. Are you sure that wasn't coincidence? I would be astonished if there were enough chloride ions left, and they spent enough time in the pumps, to do that damage. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Servo drive?
On 12 January 2012 18:14, Viesturs Lācis viesturs.la...@gmail.com wrote: I was meaning a 12 to 12 (or 12 to 15) one, like http://uk.rs-online.com/web/p/dc-dc-converters/6727408/ That gives the IRAMS board an isolated 15V supply, Thanks for the link! I have a feeling that that might not have a large enough current capacity, though. I just found my proto circuit, and it has a transformer on it, and I probably did that for a reason. Oh yes, I really would like to do that. Unfortunately I do not have much of a choice to get those motors running. So it is just one more case, where I will have to learn things the hard way. With large capacitors at 300VDC the hard way can be very hard indeed. You might not get the chance to learn from mistakes. Re your question about a 1:1 transformer, I think you probably want a 2:1 anyway, as rectified mains will give you 300V and your motors are specced for 160V. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] gEDA / Correcting for workpiece warpage.
On 12 January 2012 19:36, kqt4a...@gmail.com wrote: Like you I tried several circuit board design tools and settled on gEDA suite Easy to learn, very configurable, and lots of symbols at www.gedasymbols.org I am just looking at it now. It has the _huge_ advantage of running natively on my Mac, and I think that is going to swing it. I was hoping that DesignSpark would have RS components integration (type in part number, get schematic and PCB layout) but there is nothing like that. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] gEDA / Correcting for workpiece warpage.
On 13 January 2012 11:16, kqt4a...@gmail.com wrote: I use pcb2gcode with gEDA files without any problems Very good utility, easy to use As it claims to output EMC2-ready G-code, presumably it could be used as an EMC2 filter file, so that EMC2 can dimply open Gerbers? -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Analogue inputs into EMC2.
I had an idea of a way to measure analogue voltages with EMC2 a few days ago. It ought to be possible for a HAL module to send a sawtooth PWM signal on an output pin, and monitor one or more input pins. Externally a PWM-voltage conversion circuit and a bank of comparators would switch the input pins when the variable pwm-generated voltage was greater than the voltage to be measured. This is a fairly normal analogue voltage measurement technique, but puts the cleverness inside HAL, where EMC2 can see it. Sampling period would probably be several mS, but that is probably OK for many uses. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] steppers
On 13 January 2012 17:09, Cathrine Hribar bhri...@bresnan.net wrote: My controller is, like yours, 2.8 amp limit. As I think about it, if the steppers are wired in series, like I wired mine, they would require twice as much current to give the most torque, right?. No. In series you get twice the current through each winding as you do in parallel for the same total current. You also get twice the back-EMF, so less speed, but more torque. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] New thread, visolate
On 15 January 2012 20:50, gene heskett ghesk...@wdtv.com wrote: Now, what do most of you folks use for converting an eagle's 'excellon' drill file to gcode? If you install Octave, you could use this that I wrote for the job: function Excellon2Gcode(filename) i = 1; C = []; f = fopen(filename, 'r'); o = fopen([filename '.ngc'],'w'); do buffer = fgetl(f); if buffer != -1 [coords count] = sscanf(buffer,'X%fY%f'); if count == 2 C = [C,coords]; end end until feof(f) xfactor = -25.4/1000 yfactor = -25.4/1000 fprintf(o,'G90\nF20\nS1000\nM3\n') for i = 1:length(C) fprintf(o,'G98 G81 R0.2 X%4.4f Y%4.4f Z-3\n',C(1,i)*xfactor,C(2,i)*yfactor) end fprintf(o,'M2\n') fclose(f); fclose(o); [num2str(length(C)) ' Holes written to file ' filename '.ngc'] end -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] tapping problem?
On 16 January 2012 05:42, a...@conceptmachinery.com wrote: i there spindle motor and motor drive that can be better used for tapping? You can monitor motor current on any drive, sometimes it is built in to the drive, but otherwise there are various forms of current sensing element that can be used. However, nothing will ever prevent the users from leaving the settings in 2 tap mode regardless of what they are using. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Dapatkan akses ke foto-foto saya dan lain-lainnya
On 16 January 2012 10:11, gene heskett ghesk...@wdtv.com wrote: Well, I don't believe this is Navajo. It looks like bayes poison to me. Spam IOW. Or possibly one of our subscribers has accidentally sent an invitation to his entire contacts database. I did that with LinkedIn, which was slightly embarassing. It just grabbed my Gmail contacts... -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] EMC2 and LabVIEW
On 16 January 2012 09:04, Andrew parallel.kinemat...@gmail.com wrote: Thanks, I'm afraid it's too complicated for us. We desided to start with Adlink PCI-8136 card which has 6 encoder inputs and 6 analog outputs. Maybe later it will be possible to think about drivers for a MESA card. It is probably easier to write an EMC2 driver for the Adlink card. If the encoder counts and analogue outputs are presented as registers on the PCI bus then it is all fairly straightforward, this forum thread tracks the development of a driver for an ISA card, which as far as I know is working fine now, despite the fact that the driver was written without ever seeing the card. http://www.linuxcnc.org/index.php/english/component/kunena/?func=viewcatid=38id=10910 -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Software stepgen through Mesa GPIO pins
On 16 January 2012 15:44, Viesturs Lācis viesturs.la...@gmail.com wrote: How can I do software step generation and export it through gpio pins on 5i23? You will need to add the hm2_5i23.0.write_gpio function to the base thread (and you will need a base thread) -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] steppers
On 16 January 2012 22:06, Cathrine Hribar bhri...@bresnan.net wrote: are u saying that the nema 34 would be equal to a nema 23 three stack? Three-stack steppers in 23 size seem to be quite slow. I haven't ever tried a 34, but I understand that they have the same problem. I think you need to look at your critical rpm and and make a decision on torque at that rpm, at your voltage. My lathe has a 3-stack 23 on the Z with a 3:1 reduction and a 5mm pitch screw. The X has a 2-stack 1:1 and a 2.5mm screw. The X is faster, and stalls less. But then the X has an easier life.. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] PC shutdown
I have a D510 + PicoPSU system. The PC shuts down as expected, but I would rather like it to power-off the power supplies and monitor too. Has anyone set up such a system? I am thinking in terms of a relay controlled by the PicoPSU 5V or 12v output to switch the 240Vac with a momentary switch in parallel. Any better ideas? -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] PC shutdown
On 18 January 2012 13:28, James Louis james.lo...@gastechnology.org wrote: My Servomill also runs on a D510MO and it is plugged into the master outlet of a power strip called an Eco-strip I don't think that will work for me, as the main thing I want to do is turn of the 12V PSU which powers the PC and monitor. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] LinuxCNC: The new name of the Enhanced Machine Controller
On 18 January 2012 02:16, Chris Radek ch...@timeguy.com wrote: LinuxCNC is the best option, as this has been our website's name for years. Ah well, I was probably never going to get it to compile on MacOS anyway…. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Changing the scale factor of an axis
On 18 January 2012 20:41, Lars Andersson l...@larsandersson.com wrote: This is not allowed, stepgen.3.position-scale is a parameter, not a pin You could put a scale component between the axis and the stepgen. I think, though, that you might have more luck putting the A stepgen into velocity mode, and linking to A-velocity. f-error makes no sense on this axis so just short-circuit the pos-comd to the pos-fb. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Hackaday posted a link to a build for a VFD
On 19 January 2012 17:43, Kyle Kerr ker...@gmail.com wrote: I see a number of posts on this list regarding VFDs that I thought I would share this bit of information in case it was not on your radar. http://hackaday.com/2012/01/19/building-a-variable-frequency-drive-for-a-three-phase-motor/ Aha! The IRAMS module!. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Changing the scale factor of an axis
On 19 January 2012 20:43, Lars Andersson l...@larsandersson.com wrote: I think I will try to change the A-axis to velocity mode and put a HAL component in series that takes the derivative of commanded position That might not be necessary, you can probably use the existing axis velocity pin. (axis.3.join-vel-cmd) connected to a velocity-mode stepgen. You need to net fb-shortcircuit axis.3.motor-pos-cmd axis.3.motor-pos-fb To stop it complaining about following errors, I suspect. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Control a hot wire foam cutter using LinuxCNC?
On 19 January 2012 21:14, Florian Rist fr...@fs.tum.de wrote: What would you think makes more sense as tool path specification, a x/y positions and three angels or two x/y positions and one angel? I would go for XY and angles. You can't do (G3, G2) curves in UV, and using angles instead probably bypasses that difficulty. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Control a hot wire foam cutter using LinuxCNC?
On 20 January 2012 15:14, Florian Rist fr...@fs.tum.de wrote: Does anyone know how axis might be used to visualise the tool path and the machine? Sammel has been working on this: http://www.youtube.com/watch?v=TWOzqALWa3c patch: http://sourceforge.net/mailarchive/forum.php?thread_name=4F154BE7.4010702%40gmx.deforum_name=emc-developers -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] VFD + Induction motor closed position loop
On 20 January 2012 21:09, Leonardo Marsaglia leonardomarsagli...@gmail.com wrote: Thank you Les and Robert for your answers. So, the best option is brushed DC motors Brushless are good too, if they come with drives. There are also generic EMC2-compatible brushless drives from Pico and Mesa. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Control a hot wire foam cutter using LinuxCNC?
On 21 January 2012 15:26, Florian Rist fr...@fs.tum.de wrote: A nice feature of this machine is, that is uses a strain gauge to measure the tension of the cutting wire and to control a motor to automatically adjust the wire length to maintain a certain tension. I wonder if you could monitor current (which is a function of temperature) to optimise the cutting speed? -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On 22 January 2012 01:27, John A. Stewart astew...@crc.ca wrote: Here is my hand-edited ini file - any silly/obvious mistakes here? Does it actually have a homing switch or not? -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] pyvcp and/or Axis bug?
On 22 January 2012 02:01, Tom Easterday tom-...@bgp.nu wrote: Also, if you select one of these items and change it's value using the keyboard numbers, it will not be saved unless you click an up or down arrow selection I think that the fact that you can type into the scrollboxes is technically an oversight, as they do steal focus, and don't update. (and you forgot their very annoying behaviour when you try to type a negative number) There is a patch that makes them update on enter or leaving the box, but it isn't in the released code because they still steal focus so are potentially dangerous. I use them all the time. The patched version of pyvcp_widgets.py can be found here. http://www.bodgesoc.org/lathe/pyvcp_widgets.py But I can't recall where I got the patch from, and it doesn't solve the fact that when you are in the box even the ESC key doesn't work to stop the machine. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question on gcode parsing
On 21 January 2012 15:31, Scott Hasse scott.ha...@gmail.com wrote: To that end, I'm wondering if there is a typical approach to parsing and validating arbitrary-format gcode into some sort of canonical form There is a standalone interpreter in the LinuxCNC source, though I am not sure what it is for, or how it works, or if it works any more. Nor is it in Python. In fact, I don't know why I am bothering, but I guess I got this far, and it's now only Ctrl-V http://git.linuxcnc.org/gitweb?p=emc2.git;a=tree;f=src/emc/sai;h=c01f9e6223e3b713b68f9077c61cf27bdc34dadc;hb=HEAD -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On 22 January 2012 03:51, John Stewart alex.stew...@crc.ca wrote: Does it actually have a homing switch or not? I read somewhere that the HOME_SEQUENCE=-1 told LinuxCNC (smile) not to home. Am I correct in that assumption? Yes, but that leaves the axis unhomed, whereas you want it to home without moving. As Jon has said, you need to have a positive value for the homing sequence number and a zero HOME_SEARCH_VELOCITY http://www.linuxcnc.org/docview/html/config_ini_homing.html -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] VFD + Induction motor closed position loop
On 22 January 2012 23:20, Leonardo Marsaglia leonardomarsagli...@gmail.com wrote: I'm curious about the 8i20 card. Does this card handle the PID calculations? That card does hardly any calculations at all. It takes current and phase angle information from EMC2/linuxCNC via a serial link. The current command will come from a PID component running in LinuxCNC, and the angle information comes from another HAL component which takes data from hall sensors, encoders or resolvers on the motor. By the way, this card is intended for AC brushless motors. I'm not an expert on the subject, so I need to ask. What's the main difference between an AC brusless and a DC brushless motor. Do the coils change? The control method?. Both. The main difference (apart from the lack of brushes) is that an AC brushless is a 3-phase machine so needs 3 power wires, and a brished servo is DC with only 2 power wires. You need very different drives. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] VFD + Induction motor closed position loop
On 22 January 2012 23:56, Leonardo Marsaglia leonardomarsagli...@gmail.com wrote: Andy thanks for your explaination about the 8i20 card. So, this card used with LinuxCNC and hostmot2 will work well to drive a servo for accurate positioning. Right? It _should_. I can't say for certain that it does, as I have some problems with my motors (could be damaged motors, could be that my resolver to quadrature converter isn't good enough). I know that Matt Shaver is using the 8i20 as a spindle drive with success. the main doubt that I have is the difference between AC brushless and DC brushless motors. As far as we are concerned they are the same thing. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question on gcode parsing
On 23 January 2012 06:03, Michael Haberler mai...@mah.priv.at wrote: A prettyprinter might use whitespace to improve output readability, that's all Does anyone else indent their loops and subs in G-code? -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] installing 2.5 in simulation mode, not working
On 23 January 2012 06:19, Tom Easterday tom-...@bgp.nu wrote: I am trying to install 2.5 under 10.04 running under Parallels on my Mac. I followed the instructions (related to installing -sim) here: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Installing_EMC2#Building_emc2_simulator ... why this isn't working? I am not sure that the 2.5 branch works at the moment. It wouldn't work for me when I tried a compiled version under VMware at the weekend. It might be something as simple as $EMCDISPLAY not existing any more ($LINUXCNCDISPLAY ?) If Parallels will create a virtual machine from an ISO image then I would suggest doing that with the 2.4.7 image, it is much quicker. You can then update to 2.5 using the buildbot debs (buildbot.linuxcnc.org) I don't bother running a simulator version on my Mac, I run the normal version. I am not sure what the actual difference is. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Help with a GladeVCP startup error message
On 23 January 2012 02:14, Steve Blackmore st...@pilotltd.net wrote: Your not on your own John!! EMC, or should I now say LCNC, is written and annotated by Linux gurus That is not entirely true, I don't even know how to rename a file in Linux, but I have written some of the code, and documented it. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 2.5 run-in-place or not
On 23 January 2012 01:46, Tom Easterday tom-...@bgp.nu wrote: We currently have to open a terminal, cd to ~/emc2/emc2-dev/ and do a . scripts/environment and then run emc. If you look at the icon properties you can see the command line that they run, and edit that to point at the run-in-place startup script. I managed to do this, so it can't be that hard. It is probably possible to do the same thing with the application menu items too, but I haven't bothered. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Beagleboard
I have a friend involved in the Yocto embedded Linux project, he said the following: I'm afraid I don't know the status of rt-preempt on beagle. Its not something that is on the official test matrix so it might work or it might not :/. I did ask around but nobody is giving me indications one way or another. Standard Yocto does work on beagleboard, I can confirm that. We do have a lot of involvement from TI with the project. Which I guess doesn't answer many questions, really. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] [Emc-developers] Open letter to the EMC Board of Directors
On 23 January 2012 21:46, Chris Morley chrisinnana...@hotmail.com wrote: I will add my voice at least so Michael knows he is not the only one who feels this way. And I. It seems almost impossible to get any idea what ideas are worth developing, or which direction to go. It is very difficult to commit to doing any work on anything if you have no idea if it will be accepted. Not that things ever get rejected, they just get ignored indefinitely. Perhaps one place to start would be a List and an Antilist, the former of things that are known to be in need of improvement, and the latter of things that are thought to be the wrong direction for EMC2. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Possible Retrofit candidate for someone in the heartland
On 22 January 2012 08:07, a...@conceptmachinery.com wrote: why retrofit bridgeport machine when one can buy cnc machine X 50 Y 26 travel CNC mill for $6.5 k That machine cost $85k new, so the standard of bearings, castings, screws etc is likely to be a lot better than a built-down-to-a-price $6.5k machine. Given that we (collectively) know how to build CNC controls very cheaply the damage to the contoller is largely irrelevant. Some info on the brand, who still exist: http://www.lathes.co.uk/index/ -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Communication Channels (Was: An Open Letter...)
On 24 January 2012 13:47, Sven Wesley svenne.d...@gmail.com wrote: 3. There are too many info channels! Close down the forum on the LinuxCNC website ASAP! It doesn't work, Google can't make correct forward links and some browsers fail to show it. There is an active forum at cnczone I disagree. I don't like the linuxcnc forum particularly (I don't really like forums in general) but it is the first port of call for help for many new users. Many folk do go straight to the website of a package they have downloaded and look for the forum. The LinuxCNC forum shows 14,000 posts to 8,000 for the cnczone one. I (personally) find the cnczone forum rather hard to find, at the end of a very long list, and I don't think that the sub-forums are broken down small enough. I agree that it is a pity that the activity is split between two forums, but I don't think that closing either of them down is the right solution. I wonder if there is any way to link them? -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Communication Channels (Was: An Open Letter...)
On 24 January 2012 13:47, Sven Wesley svenne.d...@gmail.com wrote: Google can't make correct forward links I just tried a search for something I knew would find the LinuxCNC website forum, and it worked fine. Can you elaborate on this point? -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] question about tapered threading
On 24 January 2012 21:09, Kent A. Reed knbr...@erols.com wrote: At best I'm a dilettante with machine tools and certainly I'm no expert with a lathe. That not withstanding, long, long ago, I was taught to cut a tapered thread on a manual lathe by shifting the tailstock over. It seems to me this would necessarily mean the thread pitch was measured along the hypotenuse since the line of motion of the saddle is parallel to that hypotenuse. This would be the case if the tailstock is set over, however many lathes had taper-turning attachments which basically slaved the cross-feed to the longitudinal using a bar. In that case the taper would be along the adjacent line. I wonder if anyone ever noticed that these had different effects? Both NPT and BSPT have the same taper of 1/16 (3/4 on diameter per foot of length). This yields a correction factor of 1.000488, which could be applied as a constant in the G-code or, considering the munged-togetherness of taper threads, and the fact that it is half a thou in a 1 run, ignored. It would be more critical for higher angle taper threads. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
