Re: [Emc-users] Hobbing
On Fri, Mar 05, 2010 at 01:23:46PM +, Andy Pugh wrote: I am thinking of making a faster rotary axis using an ER32 collet holder I have on a 3/4 ground shaft and some taper roller bearings. I would drive that with a spare stepper I have, at about 10:1 ratio. (or one of the little servos) I can't believe that there are very large rotating forces on a gear during hobbing, I think it is probably largely balanced. The proof of that seems to be in the success of free-wheel hobbing. In MEW 78 [1], a gashed blank is fed into a hob, without any form of synchronisation. i.e. The forces must be restorative, not disruptive, in order to spontaneously push a gashed blank into synchronisation. The photograph of the finished gear is not large enough to show if it is more than useable, which is all that he claims. I also have a photograph around here somewhere, of a wormwheel being free-wheel hobbed with a tap held in the lathe chuck. In MEW 75, another author used a couple of CMOS chips for the programmable divider between the spindle encoder and stepper driver, to select the number of teeth. He describes no problems with cutting forces, other than cutting to the tooth depth in three passes in harder steel. Otherwise he just sets the depth, and cuts the teeth in one pass, in an ungashed blank. That setup has the hob running on a mandrel between lathe headstock and tailstock. The stepper-driven spindle holding the gear blank is mounted on a vertical slide on the cross-slide. From the photographs, that makes the feed perpendicular to the hob axis, which seems to me to ignore the helix angle. How that creates a spur gear with proper gaps, is not clear to me. On the other hand, preferring the quiet running of helical gears to the whine of spur gears, I have run the above setup in my mind, with (a virtual) EMC advancing the phase of the gear blank as it is fed across the rotating hob. If the rate of phase advance matches the helix angle, then the blank should come out the other side as a helical gear, I believe. (And both blank and feed are perpendicular to the hob axis. What could be simpler?) Checking that with another thought experiment, we run the helical gear on a rotating matching worm. As the gear is slid back and forth on its axis, its rotation advances and retards in accord with the helix angle. Hmmm ... where can I dig up physical examples quickest, to try it out? Incidentally, if choosing to generate the tooth profile, using a straight (no helix) hob, then that slow process can be accelerated by making a three or four tooth hob. It cuts the prior iteration on the previous tooth and the next iteration on the next tooth, speeding up the process. (Or providing a cleaner tooth form for a given number of iterations.) There was an article on that in MEW 107. Hopefully some of that is useful, Andy. Erik [1] www.model-engineer.co.uk says it is putting 130 back issues on line, but will be charging a subscription. -- Wisdom is one of the few things that looks bigger the further away it is. - Terry Pratchett, _Witches Abroad_ -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Hobbing
Looks nice Ian but I would love to measure the wheel for errors in tooth to tooth distance. We had trouble directly attributable to the worm and wheel in a bought dividing head, we made some 144 tooth wheels for a project at the BHI and they were rightly rejected, for normal clock work the error did not show or was withing tolerance but for a high count the error becomes pronounced. The easy check I use to test dividing now is get your digital calipers, measure over n teeth, zero caliper , rinse repeat but only zero if less than a previous measurement. you then see a large percentage change in places around the wheel if you have a dividing error its due to worm/wheel form error giving a sawtooth error to the dividing. Dave Caroline -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Hobbing
On 6 March 2010 07:58, Erik Christiansen dva...@internode.on.net wrote: In MEW 75, another author used a couple of CMOS chips for the programmable divider between the spindle encoder and stepper driver, to select the number of teeth. This is very easy to set up in HAL (and quite amusing too, watching the rotary axis turn as you turn the chuck to tighten it, for example) That setup has the hob running on a mandrel between lathe headstock and tailstock. The stepper-driven spindle holding the gear blank is mounted on a vertical slide on the cross-slide. That is probably the setup I will try first, mainly as it needs the least extra hardware. From the photographs, that makes the feed perpendicular to the hob axis, which seems to me to ignore the helix angle. How that creates a spur gear with proper gaps, is not clear to me. I don't think it does. I was intending to set the vertical slide at an angle and use coordinated motion in X and Z so that the blank moves along it's true axis. On the other hand, preferring the quiet running of helical gears to the whine of spur gears, I have run the above setup in my mind, with (a virtual) EMC advancing the phase of the gear blank as it is fed across the rotating hob. If the rate of phase advance matches the helix angle, then the blank should come out the other side as a helical gear, I believe. (And both blank and feed are perpendicular to the hob axis. What could be simpler?) I am not sure. It depends in if a helical gear is conceptually a gear with the teeth rotated on the surface, or a stack of infinitely thin gears with a pitch difference between each. In this picture: http://school.mech.uwa.edu.au/~dwright/DANotes/gears/photos/BrownHobbing.jpeg The hob axis seems to be tilted to match the gear helix angle, rather than the hob helix angle. I think that in either case you ideally want to match the hob helix angle to cut a true gear form. I did discuss this with my dad (50 years a gearbox machinist then designer then service manager) but he seemed unable to grasp that the feeds and drives are trivial with CNC, but the axis geometry is less so) -- atp -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Hobbing
Hi Dave, I haven't checked the wheel for accuracy but I would think that this method of generation actually is less prone to errors than methods which cut each tooth separately. Once the teeth are established as to number and you infeed the wheel onto the tap, there are always at least 3 cutting teeth (threads) in contact with the wheel at any one time and this should even out the effects of any minor errors in the tap pitch. I also usually feed the worm along the tap a little each way as I cut which will again reduce errors by using different parts of the tap. I don't know whether there would be any benefit in reducing cyclic errors by producing only wheels with an odd number of teeth like 91 instead of 90 - I did work out what the error would be if I could only make a 91 tooth one and set EMC2 up to suit it and, from what I remember, the error was infinitessimal. The great beauty of this method is that you can make a wheel from scratch in just a few minutes. I simply set up a post with the same diameter as the bore of the blank on my miller's bed ( actually made as a tube sleeve over a bolt ), slipped a spacer onto it ( a second wheel blank) and then the wheel blank I wanted to cut and capped it off with a nut and washer to stop the blank lifting during cutting. The cutter was a normal 10mm x 1mm tap and, with the blank initially set to centre height of the cutter, I wound the blank into the cutter so as to take a fairly hefty cut as I found that this was the easiest way to establish a set of even teeth ( i.e. not 90 1/2!). Then I just left the thing running merrily along as I slowly wound the blank further in until I thought that the teeth in the wheel were deep enough - i.e. not quite full depth on the tap so that I didn't get 'bottoming' when using the finished worm. Once this stage was reached I decided that I wanted the teeth to be 'flat' across the wheel so that I could remove it from the rotary without having to disturb the worm ( don't know why but it just seemed like a good idea at the time...) and so I then wound the knee of the machine up and down slowly as the work was still spinning away. On other wheels I have made (which I made on the lathe) I didn't do this and so the worm and wheel make contact for maybe 1/3 of the worm's diameter - this may be better - I don't know. Anyway, the whole cutting job and subsequent cleaning up took only about 5 minutes per wheel. The other thing I did was to mount the wheel on an eccentric in the rotary table so that I can easily adjust backlash if necessary to compensate for wear - that hasn't been necessary yet.. Why not make one and try out this way - it costs nothing except a bit of scrap material and maybe half an hour Best wishes, Ian __ Ian W. Wright Sheffield UK Dave Caroline wrote: Looks nice Ian but I would love to measure the wheel for errors in tooth to tooth distance. We had trouble directly attributable to the worm and wheel in a bought dividing head, we made some 144 tooth wheels for a project at the BHI and they were rightly rejected, for normal clock work the error did not show or was withing tolerance but for a high count the error becomes pronounced. The easy check I use to test dividing now is get your digital calipers, measure over n teeth, zero caliper , rinse repeat but only zero if less than a previous measurement. you then see a large percentage change in places around the wheel if you have a dividing error its due to worm/wheel form error giving a sawtooth error to the dividing. Dave Caroline -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: 271.1.1/2725 - Release Date: 03/05/10 19:34:00 -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Strange MDI.
2010/3/5 Slavko Kocjancic esla...@gmail.com
Jeff Epler pravi:
Which version of emc are you testing with? This behavior is buggy in
2.3, but in v2.4_branch and master there's a change that is intended to
improve or fix this problem:
commit 314f3aa2d90e5ec1f7840166f3e0ad11a9fbc0a6
Author: Jeff Epler jep...@unpythonic.net
Date: Wed Jan 27 08:16:47 2010 -0600
improve behavior of MDI O-calls
Bad things happen when the motion id is zero. This could frequently
happen when doing O-calls from MDI, because the motion ids for an MDI
start at pseudoMdiLineNumber and increase for each executed motion
(? line?) in the subroutine. For instance, if pseudoMdiLineNumber
was
-7, then executing an O-call with 8 or more lines of motion would
issue
a motion with ID 0.
diff --git a/src/emc/task/emctaskmain.cc b/src/emc/task/emctaskmain.cc
index 39ce8ad..f26c1cf 100644
--- a/src/emc/task/emctaskmain.cc
+++ b/src/emc/task/emctaskmain.cc
@@ -125,7 +125,7 @@ NMLmsg *emcTaskCommand = 0;
// signal handling code to stop main loop
static int done;
static int emctask_shutdown(void);
-static int pseudoMdiLineNumber = -1;
+static int pseudoMdiLineNumber = INT_MIN;
static int all_homed(void) {
for(int i=0; i9; i++) {
@@ -1957,7 +1957,7 @@ static int emcTaskIssueCommand(NMLmsg * cmd)
}
if (execute_msg-command[0] != 0) {
if (emcStatus-task.mode == EMC_TASK_MODE_MDI) {
- interp_list.set_line_number(--pseudoMdiLineNumber);
+ interp_list.set_line_number(++pseudoMdiLineNumber);
}
execRetval = emcTaskPlanExecute(execute_msg-command,
pseudoMdiLineNumber);
if (execRetval == 2 /* INTERP_ENDFILE */ ) {
My EMC computer just crashes. (It's dual boot WinXP and Ubuntu and crashes
under XP :D)
So I reformat harddrive and install just Ubuntu/EMC from live CD.
I'm get latest git. As I checked stepgen.c is already right for me and
emctaskmain.cc is already patched too.
But ohcenter call still doesn't work (from MDI!).
EMC Version is v2.5.0~pre, Ubuntu Hardy
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[Emc-users] linux dual boot
Hi, does anyone know where Ubuntu or Windows Vista puts its boot info? I have a laptop which came with Win Vista (yuk..) installed and I then installed Ubuntu 9.10 accepting all its defaults except the hard drive partition size where I asked it to split the hard drive in two equal parts for Windoze and Linux. I get an initial boot screen which looks like it could be Grub - i.e. its all black with white text for choices. The trouble is that, every time linux downloads an upgrade, I get another 3 or 4 entries on the list of choices and it now fills the whole screen. I tried doing 'text within files' searches (with hidden files turned on) for 'Ubuntu', 'Linux' etc. but have drawn a blank. Can anyone give me a clue where the list of options is kept nowadays so that I can remove some of the old entries and move the others around? Thanks.. Ian __ Ian W. Wright Sheffield UK -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] linux dual boot (Ian W. Wright)
Grub boot options are located in /boot/grub/menu.lst hope it helps. -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] linux dual boot
Ian W. Wright pisze: Hi, does anyone know where Ubuntu or Windows Vista puts its boot info? I have a laptop which came with Win Vista (yuk..) installed and I then installed Ubuntu 9.10 accepting all its defaults except the hard drive partition size where I asked it to split the hard drive in two equal parts for Windoze and Linux. I get an initial boot screen which looks like it could be Grub - i.e. its all black with white text for choices. The trouble is that, every time linux downloads an upgrade, I get another 3 or 4 entries on the list of choices and it now fills the whole screen. I tried doing 'text within files' searches (with hidden files turned on) for 'Ubuntu', 'Linux' etc. but have drawn a blank. Can anyone give me a clue where the list of options is kept nowadays so that I can remove some of the old entries and move the others around? Thanks.. Ian If you don't use old kernels CAREFULLY uninstall them in package manager (System-admin-synaptic package manager). Then they will be not listed in grub boot menu. regards, Michael -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] linux dual boot
As you upgrade Linux, it installs new (hopefully bugfixed) versions of the kernel. But it doesn't automatically remove the older versions of the kernel, for in case the new version doesn't work. Once you're happy that the new version of the kernel boots works, you can remove the older versions, and they'll disapear from the grub boot menu. -- Sebastian Kuzminsky never be discouraged just let your nerdy flourish -Original Message- From: Ian W. Wright watchma...@talktalk.net Subj: [Emc-users] linux dual boot Date: Sat 2010 Mar 6 7:37 Size: 1K To: Emc-users@lists.sourceforge.net Hi, does anyone know where Ubuntu or Windows Vista puts its boot info? I have a laptop which came with Win Vista (yuk..) installed and I then installed Ubuntu 9.10 accepting all its defaults except the hard drive partition size where I asked it to split the hard drive in two equal parts for Windoze and Linux. I get an initial boot screen which looks like it could be Grub - i.e. its all black with white text for choices. The trouble is that, every time linux downloads an upgrade, I get another 3 or 4 entries on the list of choices and it now fills the whole screen. I tried doing 'text within files' searches (with hidden files turned on) for 'Ubuntu', 'Linux' etc. but have drawn a blank. Can anyone give me a clue where the list of options is kept nowadays so that I can remove some of the old entries and move the others around? Thanks.. Ian __ Ian W. Wright Sheffield UK -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] linux dual boot
On my ubuntu it's here: /boot/grub/menu.lst On Saturday 06 Mar 2010, Ian W. Wright wrote: Hi, does anyone know where Ubuntu or Windows Vista puts its boot info? I have a laptop which came with Win Vista (yuk..) installed and I then installed Ubuntu 9.10 accepting all its defaults except the hard drive partition size where I asked it to split the hard drive in two equal parts for Windoze and Linux. I get an initial boot screen which looks like it could be Grub - i.e. its all black with white text for choices. The trouble is that, every time linux downloads an upgrade, I get another 3 or 4 entries on the list of choices and it now fills the whole screen. I tried doing 'text within files' searches (with hidden files turned on) for 'Ubuntu', 'Linux' etc. but have drawn a blank. Can anyone give me a clue where the list of options is kept nowadays so that I can remove some of the old entries and move the others around? Thanks.. Ian __ Ian W. Wright Sheffield UK --- --- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] How EMC face with the chanllege of hard platform development? (muti-core, 64 bit processor etc)
Emc works properly on 64-bit and SMP systems. I routinely use and develop emc on such a system with --enable-simulator (no realtime, no hardware control). For realtime hardware control, emc depends on the underlying realtime system (rtai). In 2007 I did a bit of work in this area, as detailed on my blog http://emergent.unpy.net/01180573281 http://emergent.unpy.net/01181319466 but I don't use a 64-bit or SMP kernel on the PC that controls my mill. Emc doesn't really derive any specific benefits from these systems; it doesn't need large address spaces, and its CPU usage isn't particularly high, at least in systems with no base_thread where you're not running a resource-hungry GUI. Smart I/O boards like pico and mesa, and realtime- friendly accelerated opengl (if you want to run axis) would be much bigger contributors to a responsive system than SMP would be. Ultimately, it's the time to build and test each new platform that keeps us from offering pre-built packages for every system our users would like. Building the kernel and rtai are usually more time-consuming than building emc itself. That leads us to build for a very small number of operating system releases, and to build with conservative options that we judge will work on the greatest number of machines. With the next release we'll probably look at enabling SMP; we know that this will restrict rtai to working only on systems with APIC, but in 2010 it's probably only a small minority of machines that don't have APIC. If testing proves us wrong, we'll take it out and remain restricted to using a single CPU or core. In another few years, maybe we'll be in a position to make a similar decision about 64 bits as the standard that will work on all but a few uninteresting machines. Jeff -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] linux dual boot
9.10 probably installed Grub2 which has no menu.lst. (I think upgrades to 9.10 retain Grub legacy, new installs use Grub2 - quite different) There is a useful starting point here: https://help.ubuntu.com/community/Grub2 Richard Andrew wrote: On my ubuntu it's here: /boot/grub/menu.lst On Saturday 06 Mar 2010, Ian W. Wright wrote: Hi, does anyone know where Ubuntu or Windows Vista puts its boot info? I have a laptop which came with Win Vista (yuk..) installed and I then installed Ubuntu 9.10 accepting all its defaults except the hard drive partition size where I asked it to split the hard drive in two equal parts for Windoze and Linux. I get an initial boot screen which looks like it could be Grub - i.e. its all black with white text for choices. The trouble is that, every time linux downloads an upgrade, I get another 3 or 4 entries on the list of choices and it now fills the whole screen. I tried doing 'text within files' searches (with hidden files turned on) for 'Ubuntu', 'Linux' etc. but have drawn a blank. Can anyone give me a clue where the list of options is kept nowadays so that I can remove some of the old entries and move the others around? Thanks.. Ian __ Ian W. Wright Sheffield UK --- --- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] linux dual boot
Thanks everyone - Richard got the right answer - its Grub2. Unfortunately, it seems to be more difficult to set up than the web pages suggest - e.g. Startup Manager which I have just installed, only has half the options the webpage says it should have!! Too late to worry about it tonight though - I have to be up at 5 in the morning to take part in a brass band contest.. Ian Ian W. Wright Sheffield UK -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] linux dual boot
Ian W. Wright wrote: Thanks everyone - Richard got the right answer - its Grub2. Oh NOOoo! Every time I learn something really arcane in Linux, they CHANGE the damn thing! I know a whole bunch of tricks with GRUB that have been very helpful in booting a new install when the install set it up a little bit wrong and it wouldn't boot the first time. Jon -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] linux dual boot
9.10 does use grub2, but the correct answer was given by micges. Use Synaptic and search for linux in Name only (not Name and Description). Uninstall all but the newest linux-image*** and linux-headers*** packages. You want to leave linux-generic, linux-headers-generic (if it's installed), and linux-image-generic so it will continue to get kernel updates. This will also clear up a lot of disk space. Moses On Sat, 2010-03-06 at 22:14 +, Ian W. Wright wrote: Thanks everyone - Richard got the right answer - its Grub2. Unfortunately, it seems to be more difficult to set up than the web pages suggest - e.g. Startup Manager which I have just installed, only has half the options the webpage says it should have!! Too late to worry about it tonight though - I have to be up at 5 in the morning to take part in a brass band contest.. Ian Ian W. Wright Sheffield UK -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Absolute Encoder Connector
On Fri, 2010-03-05 at 14:14 -0800, Kirk Wallace wrote: ... snip Well, it turns out the sensor board on my AEAT 6010 encoder board is glued in so it was a bit of a chore to get out. Now I need to wire it up to see if it still works. http://wallacecompany.com/machine_shop/EMC2/absolute_encoder/dcp_6885-1a.jpg It seems to work. I jury rigged a breadboard and massaged my ADC comp into a absolute encoder comp. I get an output from 0 to 1023 as I rotate the shaft magnet. Now, I need to machine a housing with a shaft, bearing and terminal strip and give it another test. I'll post the Halscope and comp file tomorrow. There isn't much left of the original encoder, so I'm thinking it would have been better to just get the sensor chip, if it's available. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Download Intel#174; Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
