How about a couple of scripts that launch LinuxCNC in various ways, including one that nukes the troublesome files first?
Should be able to have some scripts create or copy those files from another location so you could have many different setups with a single install of the software. --- On Mon, 4/15/13, Gene Heskett <ghesk...@wdtv.com> wrote: > From: Gene Heskett <ghesk...@wdtv.com> > Subject: Re: [Emc-users] How about the core[X,Y] drive? > To: emc-users@lists.sourceforge.net > Date: Monday, April 15, 2013, 12:28 PM > On Monday 15 April 2013 13:22:31 > Viesturs Lācis did opine: > > > 2013/4/15 andy pugh <bodge...@gmail.com> > > > > > On 15 April 2013 11:00, Gregg Eshelman <g_ala...@yahoo.com> > wrote: > > > > The crossover counters any offset push at one > end of the gantry with > > > > an > > > > > > equal pull in the same direction at the opposite > end. The theory page > > > shows how it works. > > > > > > I have stared at the diagrams for long enough now > that I have changed > > > my mind several times. I might have to build one > to see. > > > > > > > Does LinuxCNC have H-bot support? CoreXY > should drive identically. > > > > > > Not built-in, but: > > > > > > http://www.linuxcnc.org/index.php/english/forum/38-general-linuxcnc-qu > > > estions/26302-cnc-avec-systeme-h-bot-ou-corexy > > > > Hmm, it is not the first time I see links to that > Russian forum and with > > every time I get stronger and stronger impression that > those LinuxCNC > > users that hang out there is a completely separate > community... > > > > Anyway, I just cannot figure out, how to set up homing > routine to home > > such a machine to some switches. > > Use the sign of the HOME_SEARCH_VELOCITY to control which > switch its > looking for. Then HOME_OFFSET with a sign can set home > to any position. > Then in case the home switches are off in a corner someplace > and you have > to jog the machine to a suitable starting position before > invoking the > homing operation, run it to where the first switch is > available quickly, > and use the HOME_SEQUENCE number to put all the home ops in > the proper > order. > > On my lathe, a grep of the .ini for HOME returns this: > In [TRAJ] > HOME_ALL = 1 (one home all button in > axis) > > In x [AXIS_0] > HOME = 1.250 (where it parks it when done) > HOME_IGNORE_LIMITS = YES > HOME_USE_INDEX = NO (if servo's, could be useful) > HOME_OFFSET = 0.01000000 (where it marks it as 0.0 from > where its at) > HOME_SEARCH_VEL = -0.08 (in machine units, IPS IOW) > HOME_LATCH_VEL = -.008 > HOME_FINAL_VEL = -.1 > HOME_IS_SHARED = 1 (one logic signal is > input for all homes) > HOME_SEQUENCE = 1 (second one to be done) > > > In z [AXIS_2] > HOME = 4.250 (where it marks it as being when > finished) > HOME_IGNORE_LIMITS = YES > HOME_USE_INDEX = NO > HOME_OFFSET = 4.090 ( distance in this case from left face > of gauge to face > of pcb on right face of gauge) > HOME_SEARCH_VEL = -0.08 > HOME_LATCH_VEL = -0.015 > HOME_FINAL_VEL = 0.25 > HOME_IS_SHARED = 1 > HOME_SEQUENCE = 0 (first to home) > > I place a gauge I made on the ways, backed up against the > work piece as > chucked, place a cleaned cutting tool next to the pcb copper > that is the Z > detector on the gauge, and hit the HOME_ALL button, It > searches z for > contact, sets the home offset such that 0.0z is shaving the > rust off the > chuck jaws, or if work is chucked, touching the face of the > work. Then it > backs away a wee bit and searches inward to find the contact > for the x > home, finds that piece of pcb, sets home to pretty close to > the center of > the work (I'm still fine tuning that) then parks the tool > back out of the > way till its needed. > > yerp, buzz, yerp, yerp, buzz, yerp, done in about 7 > seconds. > > If the ways and base of my tool are lox clean, repeatable to > under .001". > That however is a major problem for x as it tilts the gauge > just for a good > coat of vactra on the ways. I need to make the rear, > huge flat area into a > single point contact with the back in order to penetrate the > oil film and > possibly leave a little room for dust, between it and the > flat back way on > that toy lathe. > > The man page on homing could be clearer, but careful rereads > will point the > way as there are many, many variations. And there are > N! ways to screw it > up. :) > > The only fly in this ointment is that it all goes totally, > absolutely to > hell if you have applied /any/ touch offs, and in my case I > would call not > canceling the touch off in effect as the first thing the > homing operation > does a bug. Ditto for trying to use position.txt, as > that also > contaminates the zero's this sets. > > IMO its a BUG, and for me a BIG BUG, requiring that I first > stop linuxcnc, > nuke the position.txt AND the linuxcnc.vars files before > restarting > linuxcnc, so that it truly starts from scratch when homing. > > Touching the HOME button should first NUKE any touch off > offsets in effect > at the time for the axis being homed. > > It does not, so home is then relative to the &^$#@ > offset. I have broken > tools and wrecked nearly finished parts because of this, > several times. > > Is there a valid reason for the current, save the offsets > behavior? > > Cheers, Gene > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! > My views > <http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml> > %DCL-MEM-BAD, bad memory > VMS-F-PDGERS, pudding between the ears > A pen in the hand of this president is far more > dangerous than a gun in the hands of 200 million > law-abiding citizens. > > ------------------------------------------------------------------------------ > Precog is a next-generation analytics platform capable of > advanced > analytics on semi-structured data. The platform includes > APIs for building > apps and a phenomenal toolset for data science. Developers > can use > our toolset for easy data analysis & visualization. Get > a free account! > http://www2.precog.com/precogplatform/slashdotnewsletter > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis & visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
