Re: [Emc-users] remove unwanted copper between tracks and pads

Have you also tried CopperCam (http://www.galaad.net/coppercam-eng.html)? CopperCam can do both contour tracing (with a settable width of free space around the edges) and do a full area hatch. You can hatch using the same engraving cutter used to trace the contours but you can also specify any o

Re: [Emc-users] Got my first signal out...

Martin, > I really don't mind being laughed at so much, just make sure you tell me > about it so I can laugh too Been there - done that. No, not the laughing at part ... It is only due to this mailing list and the IRC channel that I got my system working. It has been working with stepper mot

Re: [Emc-users] How to Correct Angular Axes Misaligment in Software?

Florian, I agree with Steve. If your Z-axis movement is not perpendicular to the XY plane you must fix this. The same for spindel alignment, that should also be perpendicular to the XY plane. Is this a home built machine? Any chance of changing it such that you can get rid of the misasalignmen

Re: [Emc-users] newbie

Hi Martin, fully agree with David - nice photo - must almost depicts how you feel with your EMC test (so it is on topic) :-) You got me confused about the user manual and what should be in chapter 8 (about printer ports ? it's about G-code) But never mind, who needs manuals ... Reading from yo

Re: [Emc-users] Hostmot2 disabling download of FPGA configuration

Jeff Epler wrote: > based on reading the source code, simply not specifying firmware= will > skip loading a firmware: and as I remember this is confirmed by the documentation. Good to know that the documentation and the source code are in line :-) Just remember that specifying the firmware= will d

Re: [Emc-users] P, I, and D variables adjustable while emc2 is running?

John, thanks - I've been wanting that - good thing I only did rough tuning just to see if my servos work. The machine is still in building/thinking phase so not too much time wasted yet :-) Cheers, Rob John Thornton wrote: > You can go to Machine/Calibration and tune servos from there. >

Re: [Emc-users] hostmot2 servo on 5i20/7i40 - cannot change INPUT_SCALE

you want :) > > - Steve YES - thanks for pointing that one out! I think I have been staring at the numbers too much. Rob > Rob Jansen wrote: > > >> [snip] >> After changing the units from inch to mm I had this 0.025mm/rev system >> but it needed to be 2.5

Re: [Emc-users] hostmot2 servo on 5i20/7i40 - cannot change INPUT_SCALE

Wow, I have seen the light: servos are now working as expected. Sebastian Kuzminsky wrote: > The hm2-servo configs set both of them to 1.0, and that's probably a > reasonable value. "Reasonable value" ... Big grin ... > MAX_OUTPUT is the biggest value that the pid > component can specify for

Re: [Emc-users] hostmot2 servo on 5i20/7i40 - cannot change INPUT_SCALE

Sebastian Kuzminsky wrote: > Sounds good. Your encoder has 512 lines, so it produces 2048 pulses per > revolution. Your machine is metric, so INPUT_SCALE is counts/mm, which > is 2048 counts/rev / 2.5 mm/rev = 819.2 counts/mm. Yes, luckily I was able to verify this with my logic analyzer - the

[Emc-users] hostmot2 servo on 5i20/7i40 - cannot change INPUT_SCALE

almost works ... The 7i40 boards arrived today, hooked one up on my 5i20 card. I copied the hm2-servo config and this works - I can move my motors at slower speeds without any problem. But ... the config specifies LINEAR_UNITS = inch and INPUT_SCALE = 81920 and with LINEAR_UNITS = mm and my 512

Re: [Emc-users] Laser cutters and engravers

Karl, a friend of me ordered one. http://www.lionlasers.nl/lasers.htm is the Dutch company importing them, he ordered direct from China - I don't have the web address of the Chinese company right now - have to with my friend. Price in the Netherlands 7800 EUR, direct from China (plus 2 extra l

Re: [Emc-users] Spindle Control

same over here. I've also been used to check the tool board and only start my lathe when the chuck wrench and other tools are there. One of my chucks was delivered with a wrench with a spring so it will not even stay in the chuck by itself - a safety feature that was developed to be removed ...

[Emc-users] Advice for mesa 5i20 servo drivers needed

I got triggered by the mail from Klemen about his servo amplifiers. I own a 5i20 card, currently it is controlling my EMC mill using stepper motors. A conversion towards servo motors is on its way - the servos have been ordered (both 1.7 and 2.5 Nm versions to play with). The question now is wh

Re: [Emc-users] Engrave.py cuts deeper and deeper

Sven, that is good news. Good to hear that the motors are good - I would have gone for way bigger motors but then, the 6.4 Nm steppers on my gigantic mill are very strong (my scales stop at 130 kg, the motors did not ...). And I was the one thinking your motors were way too small for the job -

Re: [Emc-users] srm?

Hm, I don't have access to my EMC system right now, but the webserve also runs Ubuntu, it does accept the ~ on the commandline - as you can also see from the error in Aram's mail (Error: file TR2~ - No such ...). Maybe there are unprintable characters in the filename? You could try name complet

Re: [Emc-users] Engrave.py cuts deeper and deeper

Well, the figures do not compute, the spec tells me it's 18.2V 11A which would be max. 200 W. But I thing 0.4 Nm is very low for this wattage. As the spec also tells me it is meant for applications such as carriage of high speed printers and XY plotters. IMHO these are too small for a CNC route

Re: [Emc-users] EMC2 SMP

As Chris Radek stated there is no SMP for EMC2 - the main reason for this (as far as I know) is the strict real time behaviour of EMC2. You could indeed put two machines on one screen but I would strongly advice against this. I have been working in the computer field and used to control two, or

[Emc-users] Servo selection - was Re: Engrave.py cuts deeper and deeper

Sven Wesley wrote: > This is s frustrating! When setting the PID the servo's accelerates so > fast I have to clamp the to the bench. When running with the rest of the > system it's just poor performance. > I do think that my servo's are powerful enough for this machine. What is the torque of yo

Re: [Emc-users] Another homing question, but mine is really irritating ; -)

David, you mention both home and limit switches. Note that with EMC you can combine home and (of of the) limit switches on one actual switch. The good thing on homing is that you can determine the position of your vise, a fourth axis and maybe other - special - workpiece holders. EMC, as other

Re: [Emc-users] Engrave.py cuts deeper and deeper

Sven, Just try some fairly safe timings. On my drivers I started with 20 us step space / step time and 1000 us dir setup and hold. Those should be real safe values. I forgot, but is the problem only in the Z axis? With the axis always going down ? In that case could this be a mechanical slip?

Re: [Emc-users] Engrave.py cuts deeper and deeper

Sven, > I'm using Rutex 990H cards and Minerva (Yaskawa robot) servo's rated 67 V/10 > A, and I have so much power in the electric feed I can use the control box > as a welding machine . > These Rutex drivers are step-servo drives, meaning that they convert a stepper output (from your CNC contr

Re: [Emc-users] [~OT:] Another Excuse to use EMC2

Kirk Wallace wrote: > Oops, the first video is of a laser, I meant to highlight the electron > beam welding. > But also real nice stuff. Excuse ... That it's Linux - gives a lot of nice extra features. One - very silly feature is the support for digital cameras. I recently misplaced my cardrea

Re: [Emc-users] Mesa io card driving h bridge and counting encoders

Peter C. Wallace wrote: > The three phase PWM generator does have high and low side drive and > deadzone > timers but a three phase drive is probably not a good beginner project :-) > > You can also count TTL encoder signals directly with the FPGA board. > Hm, some good memories come back. My C

[Emc-users] Advanced stuff - was Re: Servo tuning--plot request

Robert, > >> Forget the fancy math. Mostly CAM takes care of that. Complicated sub >> routines aren't used a lot either. >> >> Main reasons being, the operator is likely to know nothing more than the >> standard Fanuc stuff and if he doesn't understand the code your asking >> for trouble. Commercia

Re: [Emc-users] Servo tuning--plot request

Dale, if the article is to show EMC capabilities in order to promote the retrofitting of EMC I am interested. I have a business relation with two of the same milling centers with very old Fanuc controllers. One is broken (PC problem) and repair will cost more than an EMC retrofit. Also the old

Re: [Emc-users] Uni-directional approach?

Cal, > unidirectional approach feature. > > Is this specialization supported by G-code and EMC? > OR is backlash compensation the avenue to achieve the required results? > Yes and No on both your questions :-) Yes, unidirectional is supported - by your CAM software (but this does not work for

Re: [Emc-users] Beginner question

Peter, > my driver is a CMD-50c which can handle 15-40v, and 3.5 amps, but I do > not have access to anything above the 19v I currently have. > > Thanks for everything, it looks like I will be looking for other motors. > Try to get hold of a power supply with a higher voltage. Coils, as use

Re: [Emc-users] OpenGL on EMC2? + 7i43

Richard, quoting from one of your earlier mails: >Thanks to everyone who tryed to help, thanks to everyone behind such a >great project. Dito! I had a bit more success than you had with the support from this list. I had some problems with the Mesa HM2 configuration files that were solved than

Re: [Emc-users] Hostory of EMC / supported G-codes

Chris Radek wrote: > would be good to have a historical overview of all the changes since Thanks Chris, this may not be the comprehensive feature list I was looking for (I know the chance of having such a list is small) but it does allow me to track some of EMC's history. Something that is nice

[Emc-users] Hostory of EMC / supported G-codes

I just got an email concerning the use of the G64 P... G-code I introduced in the output of the postprocessor in DeskProto. I found this to improve speed a lot and reported this to DeskProto about a year ago - they were happy to add this in their default post processor configuration. Apparently

Re: [Emc-users] Bad character'\37777777757' used

to avoid a problem you need to know what is causing it. If the problem is on the first line, then use "head" as a filter to only show the first 20 lines of the output. Just type: od -a test.txt | head I am not sure what your linux/unix background knowledge is but in this line: 1. od -a

Re: [Emc-users] Error with new program.

Aram, > i use text edditor. and file has extention .txt > in file everything cleare and problem. i save file. when load into EMC2 > lines 6 and 7 joint to line 5 in a terminal window type: "od -c filename.txt" (without the " "). Copy/paste the output to this list, then I'll be able to see if ther

[Emc-users] (Dutch) EMC for Dummies fest

Some time ago there were a few mails about an EMC Fest in Europe. Just this week another Dutch EMC user (Dirk) sent me an email to trigger me about the silence about the European EMC Fest. We both feel the need to do something - even if it is just the two of us :-} But I do not have that much EM

Re: [Emc-users] Using MDI during a Program?

Andy Pugh wrote: > 2009/6/20 Rob Jansen : > > >> how would EMC know how to move back to the last >> programmed position/ >> > > I don't think it needs to, it will either do the next G0 (which is no > problem at all) or do a G1 which might get a

Re: [Emc-users] Using MDI during a Program?

Hubert, there is also the option of integrating a tool length sensor. With the first tool set the home position of the Z-axis and use the tool length sensor to record a tool-sensor offset. After changing the tool, go back to the tool length sensor and determine the tool length, minus the offset

Re: [Emc-users] New machine in production

Andy Pugh wrote: > 2009/6/10 Rainer Schmidt : > > >> I just visited an exhibition in NYC in the Javits Center and >> Bosch/Rexroth were there as well. Nice components! And with the >> economy right now... they even talk to the smaller guys. >> > > Handy stuff indeed, I used it for the case

Re: [Emc-users] Purchase of 7i43 and 7i33

> > You're kidding me right??? > > I called them today to figure out what cards do what and which is > supported by EMC. We are looking for more than one... cough cough... > That call was a pretty bad experience and after reading the above > they're off the short list. No further information requir

Re: [Emc-users] EMC slowing down after large program

Rainer, I am more talking in the range of 650.000 lines.so about 40 times as big as the program you tested. l am milling Large molds with high precision resulting in these very large programs. Rob Rainer Schmidt wrote: > 15K lines with 6 subsequent runs without exit or reboot and no issues

Re: [Emc-users] EMC slowing down after large program

Rainer, I am more talking in the range of 650.000 lines.so about 40 times as big as the program you tested. l am milling Large molds with high precision resulting in these very large programs. Rob Rainer Schmidt wrote: > 15K lines with 6 subsequent runs without exit or reboot and no issues

Re: [Emc-users] Brushless Motor

The problem with taking apart motors with permanents magnets is not as much the loss of magnetism but its force. I have disassembled quite a lot of motors with perms. Back in 'the old days' when I was still young ;-) I already realized that it pays to recycle and removing the copper made nice po

Re: [Emc-users] Datron Pulsed Ethanol Mist

Kirk, nice machines. I have to try this ethanol mist myself. Ethanol is less expensive as good oil and less hazardous for you health. > Using an Ethanol based mist, must have a lot of hazard, corrosion and HR > issues? > Oil or emulsion based cooling is a mess. The substances used are not qu

Re: [Emc-users] Rotary Axis Designs

The same procedure as Belli Button suggest is indeed standard. Two (half height) gears mounted on top of each other and interlocking the the driving gear to remove the play on the gearing. Easy for standard gears or trapezoid and ball screw axis (two nuts on one axis) but a bit more complex for

[Emc-users] EMC slowing down after large program

Hi all, I am not sure if it is just me or my Linux machine but I have a problem that looks like memory leaks or something like this. After running a very large G-code program (like 655,000 lines of code, 14 MB filesize) EMC becomes real slow. A clear live plot (ctrl-K) does not help but after

Re: [Emc-users] TechShop

Could work. In the Netherlands we had something like this for guys (and gills) restoring their own car: A real garage with all the tools and a real car mechanic making sure the 'tough jobs' got done in a proper way so you end up with a working car. But in the end they could not make it happen,

[Emc-users] Mounting PC boards for drilling/milling - was Re: cable shielding??

Gene, Gary, I use double sided tape a lot for milling EPS/XPS foam and sometimes for PCB milling. There is a problem with the tape wrapping around the mill when you mill through the tape, not that much of a problem for PCB material with a spade mill but it could be a problem with one of those c

Re: [Emc-users] I Need help optimizing the step generation

Michael Jones wrote: > I'm not SURE about the Z axis variations, but things seem to be more > stable - I'm doing an engraving right now, so the jury's still out, > but it looks good. > When setting up my machine I created a small G-code program to move the axis up and down at different spe

Re: [Emc-users] Cheap MPG

Well, Kirk did it again! > I think MPG's are too expensive, so I am trying to see if I could make > one. What I have so far is at the top of the page here: > http://www.wallacecompany.com/machine_shop/Shizuoka/ > I found this MPG http://www.myvoice.nl/freesmachine/images/encoder-handwiel-voork

Re: [Emc-users] I Need help optimizing the step generation

Michael, the documentation is of course the first thing where to look for the information you need. But having been there myself I know it can be quite overwhelming ... > I've been reading in parts of the documentation and troubleshooting > pages that some of these issues could be due to step

Re: [Emc-users] Joint following error?

Michael, a joint following error means that the position where EMC thinks the axis should be is not the same as where the motor controller's feedback loop tells you the axis is. I guess you have a stepper system which makes this a strange error to see. But EMC is split in a trajectory control

Re: [Emc-users] Toolchanger howto/tutorial

Erik Christiansen wrote: > While I don't have my feet properly wet yet with this CNC stuff, it > when leaning how to swim, don't your feet get wet first ? :-) > looks like the details depend on our machines, and the level of > performance we need. It shouldn't be that hard to make a basic one, i

[Emc-users] Probe design - was Re: unshielded cable

Gene Heskett wrote: > They are now included at > as 'probe-*.jpg' > > These opto's I used have about a .150" gap. It holds the thing together when > assembled. I don't recall now if they have schmidt outputs or not. > Nice probe. I made one using the Re

Re: [Emc-users] unshielded cable

Gene, > Can you describe this Olflex cable please? > http://www.olflex.com.mx/clientes/estructura/img/administrador/archivos/olflex_classic_110_cy.pdf I use the 110 CY cable, the standard 110 cables has no shielding. The 21 AWG cable is perfect for signals, I use the 18 AWG for the stepper mot

Re: [Emc-users] unshielded cable

Doug, I've seen the responses from other stating it's "kind of OK as long as you watch out". Well, I can tell you it's not OK. Use the cable for anything but steppers, servos, encoders, limit or home switches etc. I have seen problems even when the spindle's VFD signals and stepper cables were

Re: [Emc-users] Touch off / workpiece home coordinate

Chris, I downloaded a version from cvs about two weeks ago - in the speed of EMC development this indeed is 'a while back' :-) Based on your mail I did a cvs update / compile and now G53 works. Regards, Rob Chris Radek wrote: > On Fri, May 01, 2009 at 09:39:07AM +0200, Rob

Re: [Emc-users] Touch off / workpiece home coordinate

Tom, The G53 command results in the following error: interp_error: Can use only G5.2 or G5.3 after G5.2 Is this a bug? - There is no G5.2 or G5.3, only a G53 and the manual does not mention any dependencies on G53. I also read the information on G92 - it sets global offsets and affects all coor

[Emc-users] Touch off / workpiece home coordinate

I'm lost. I thought that the touch-off feature was for setting the workpiece home position. So I search for the side of my workpiece with one of these LED feelers ("kantentaster" in Dutch, don't know the English term) and perform a touch-off with 5mm. I thought this should set my coordinate (X o

Re: [Emc-users] Writeup on the CNC4PC MPG6 & C22 pendant

Rainer Schmidt wrote: > I just bought one from ebay for $15. A Logitech RumblePad... Probably > it gives force feedback when you run the bit into a fixture... lol > Rainer > But probably the fixture will be dented- much like the car is dented when you bang your head on the hood afterwards;-) Ra

Re: [Emc-users] Writeup on the CNC4PC MPG6 & C22 pendant

Jon, same question as Gene. Pix would be nice. I was thinking of buying one from stappenmotor.nl, they are charging 41 EUR ex. VAT for a 60mm encoder. I did not even think about one-handed operation, sound very usefull though. With a custom made (3D printed) housing from shapeways this will loo

Re: [Emc-users] management of limit switches

Robert, as also written by others, the 'override limits' button on the (Axis) user interface allow you to back of from the limits. But in general, the limit switches should be placed at such a location that these are never hit during normal operation. On my machine the travel of the Y axis (tha

Re: [Emc-users] Help configuring hostmot2 stepper system

Sebastian Kuzminsky wrote: > I'm glad that worked :-) > I'm hoping that i'll get stepgen maxaccel=0 working soonish, then we'll > make that the default and the user will just set [AXIS] stuff correctly > and things'll work. > Just let me know when it's done. I'd be happy to cvs the new sources

Re: [Emc-users] Help configuring hostmot2 stepper system

Sebastian Kuzminsky wrote: > Matt Shaver wrote: > > ... > > Are you running with the hm2 stepgen's maxvel and maxaccel 5% higher > than the TP's [AXIS_?]MAX*, and still getting following errors? > I changed the hm2 stepgen and maxvel to values that are a bit higher than the AXIS_ values

Re: [Emc-users] Help configuring hostmot2 stepper system

Sebastian, Sebastian Kuzminsky wrote: > Some other thoughts on the hm2-stepper config you linked in an earlier > email: > > You dont need a BASE_PERIOD for hostmot2 - the base thread is in the FPGA. > > Your SERVO and TRAJ periods are both 100,000 ns, which is pretty > aggressive, 1,000,000 ns i

Re: [Emc-users] Help configuring hostmot2 stepper system

Alex Joni wrote: > You didn't say what emc2 version you're using. > hm2-stepper has been reworked for 2.3.0, so you might have better success > with that. > Yes, I am using 2.3.0. The version I compiled from CVS end of last week so the one without the humming and dithering in the motors. > * y

[Emc-users] Help configuring hostmot2 stepper system

forgot a link to my configs: http://www.myvoice.nl/freesmachine/configs/ The "elan" config is the old parport config, hm2-stepper the hostmot2 stepper motor config. Rob -- Stay on top of everything new and different, bo

[Emc-users] Help configuring hostmot2 stepper system

Hi, the past week(s) I have been working on getting my hostmot2 system running with the Mesa 5i20 card and stepper motors. Up to a certain point this is a success. But there still is this problem with joint following errors - whatever I try I keep having joint following errors. I tried differ

Re: [Emc-users] Hostmot2 - stepper signal invert

On Mon, Apr 19, 2004 at 3:33 PM, John Thornton wrote: > I've added a bit to the manual on this after reading this... > > http://www.linuxcnc.org/docview/devel/html//drivers_hostmot2.html > > Heck it even makes sense to me now :) I think... > It even makes sense to me :-) Most of this i read on d

Re: [Emc-users] Incorporation & Donation [Was: Re: What's coming in manufacturing]

I would not mind saying thank you to the developers or the volunteers at the shows by buying them a beer, lunch or maybe even some hardware to play with. We do have nice beers in the Netherlands ;-) Cheers, Rob On Sun, Apr 19, 2009 at 7:36 PM, Stuart Stevenson wrote: > After I win the lotter

Re: [Emc-users] Hostmot2 - stepper signal invert

Thanks, this works - I thought that only worked on standard output lines - not on special function pins. Sometimes I am thinking too complex... Meanwhile I also added spindle control with a PWM output. I think the docs are a bit outdated (or I just found the wrong ones).Some docs tell me the to u

[Emc-users] Hostmot2 - stepper signal invert

Hi, is it possible to invert the DIR signal of the stepgen output of the Mesa 5i20 board? On my old (parport) config I had the DIR signal inverted so I was looking for a similar option on the hostmot configuration. Otherwise I'd have to open the controller-box to change one of the phases of ea

Re: [Emc-users] compile emc2 in Glade or eclipse

Duc, I have to agree with Jeff. http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?action=browse&id=Installing_EMC2&revision=146 describes in good detail what to do to install EMC (from the Live CD), get the sources and the tools and compile everything. The EMC team did a real good job on this: I instal

Re: [Emc-users] converting parport to 5i20 config -> joint following error

Sebastian, > Another brave hm2 testing volunteer! Welcome! Yep, slow system, problems with parport and not enough I/O made me buy two 5i20 cards (and a 7i43) card. One 5i20 for the main system, one as a backup/second system at home and the 7i43 to play around with and try some FPGA programming

[Emc-users] converting parport to 5i20 config -> joint following error

I started converting my EMC2 mill from parport to the Mesa 5i20 hostmot2 stepper and got stuck with a problem. The parport configuration works fine but the hm2_stepper config is having problems. I keep getting "joint xxx following errors". I checked the docs but cannot explain this: ferror, min

Re: [Emc-users] What's coming in manufacturing

Hear hear, > These little home shops don't have to pay employee > healthcare nor pay corporate taxes. They can likely pay the lower > capital gains taxes on what their robots, cnc mills and Fab machines build. > Things are not that different on the other side of the world (the Netherlands)

Re: [Emc-users] Users Locations

I have to agree with Aaron, a job well done! I think we are the lucky guys. User density in England and the Netherlands is higher (per square mile) than in he US :-) There are 408 registered users on linuxcnc.org but still less than 60 users on the map so there is still some work to do - for the

Re: [Emc-users] syncing two motors to one axis

Len, you give me too much credits. I don't know that much about the HAL and to be honest, I am just able to understand the HAL files that I got as samples. Did this all with a bit of standard logic gates since my PC does not have enough I/O to capture all the signals. But my 5i20 and 7i43 Mesa car

Re: [Emc-users] using a 5i20 for stepper motor control

Matt, I finally found some time to look at your files. Thanks, the files look great - well documented so this should get me going without any problems. I just ordered 2 5i20 boards so I have a spare or a second system to play with. This will also give me enough I/O to add all the extra I/O I w

Re: [Emc-users] Latency Test Result Questions

Don, good thing you kept the .ini and .hal files - reminds me to make backups once again cause I think I changed the files since the last backup ... I copied my working config for the mill to 3 different machines (one active, one backup and one to play with at home) by comparing a setup generat

Re: [Emc-users] Users Locations

Alex, > I think the webpage could be a better place than the wiki. > If there are enough people out there who are ok with doing this, we can add > a community-module to linuxcnc.org, so every registered user can set up a > profile with pictures, links, personal information, etc. > Let me know if

Re: [Emc-users] Users Locations

Great idea. Might be nice for regional gatherings. Time to point to http://www.frappr.com/emc2 again, there's a nice map of EMC2 users - but are there really only two users in the whole of the Netherlands? We're not that small a country !? Cheers, Rob On Fri, Apr 3, 2009 at 9:43 PM, Jim Combs w

Re: [Emc-users] Bug in stepconf?

Peter, > this is mainly to the EMC developers. I am not an EMC developer. I am a challenging user, just like most of us :-) > Seriously: After all my efforts I am inclined to exclude all other causes > of the misbehaviour than stepconf. Is it really true that nobody ever > reported problems wit

Re: [Emc-users] syncing two motors to one axis

Len, steppers makes this problem very easy and it has indeed been discussed before. Searching on the term "two motors" I was able to retrieve a number of my own posts about this. http://article.gmane.org/gmane.linux.distributions.emc.user/8147/match=two+motors is an older post describing a po

[Emc-users] Soft/hard limits & homing (was: Re: emc2.3.0beta2)

Steve Blackmore wrote: > Softlimits? I don't use them. I have limit switches, I don't use them > either, I think since the eighties I've hit them twice. They are simply > there to stop the machine ramming the end of the ballscrews ;) > > I don't directly use "machine coordinates" either, they are m

Re: [Emc-users] using a 5i20 for stepper motor control

Roger, > Eric, > Personally, I think the best way to cut insanely small segments is not to > generate them. Instead of doing a P0.1 on the machine side change your > tolerance > on the CAM side. I do a lot of contouring in using VisualMill and the size of > the G-code varies in direct relationshi

Re: [Emc-users] using a 5i20 for stepper motor control

Thanks, Peter C. Wallace wrote: > We will have PCI express versions of Anything I/O cards later this year > ... > That said, I would not worry too much about PCI dissapearing, I expect > Motheboards with PCI to be available for at least 5 more years That is what I would expect. But I hope my m

Re: [Emc-users] using a 5i20 for stepper motor control

Sebastian, Alex, Eric, Jon, (did I forget anyone who responded, then I'm sorry) Thanks for all the tips. As Sebastian suggested I will definitely do a system analysis before spending money but spending 200 USD on a 10,000 EUR machine is not that high an investment. I will not opt for the 7i43 o

[Emc-users] using a 5i20 for stepper motor control

Hi, I have an EMC2 controlled CNC mill with stepper motors but I am not too happy about the parallel port being used as stepper signal generator. My current configuration is a standard one generated with the step configuration wizard but I am guessing the PC uses quite some time to calculate th

Re: [Emc-users] EMC and auto/manual mode

I also have to do manual tool changes and was thinking to do this with a simple subroutine in my programs. Combined with a tool-length probe which can be a simple industrial push button with stainless steel button (the ones I've seen are accurate within 0.02 mm) 1. move up and stop spindle

Re: [Emc-users] CNC 101

Gene Heskett asks about David Laserscanner: > I wonder how they compensate for the camera parallax? That would need to be > calibrated anew every time the camera was setup I'd think They use a calibration chart with lots of dots. You set up a background with the two parts of the calibration char

Re: [Emc-users] CNC 101

Raymond, as you will understand from the other positive mails it is definitely worth the effort. Almost any stepper driver/motor combination is possible. I am using an old Compaq PC, slower than 1 GHz and 512 (or 1 GB - I forgot) MB of memory. I am using stepper drivers with optical isolation

Re: [Emc-users] Slow axis router

Aaron, all depends on the construction of the machine. I built a 1.5 x 2 m gantry used for foam, wood and aluminum. Specs: Double X-axis with 25 mm linear guide rails, Y and Z using 20 mm rails with 2 carriages on each rail. Stepper motors are 6.4 Nm (NEMA34 size) with stepper motor drivers usi

Re: [Emc-users] 4 to 5 axis milling SW Re: Testing

Dirk wrote: > Yes, this sounds very simple. So, maybe I have to imagine parts as if they > are trapped in a sphere and "only" the outside has to be removed. Something > like Michelango did: he only had to remove the marble on the outside because > the statue was already on the inside. Sorry, can't

[Emc-users] 4 to 5 axis milling SW Re: Testing

Risto, dxf2gcode will not get you 5 axis milling If you use Rhino 3D there is MadCAM, (link on the rhino3d.com website ). The German Rhino agent FILOU has some more info stating that version 4.1 has 4 & 5 axis milling support. T

Re: [Emc-users] 2.2.7, no touch-off available after M00???

Hi, I'm not sure this is related to M00, I have a similar problem on my 2.2.2 system. At a sudden moment touch off won't work anymore. As soon as I enter a value, the OK button is grayed out. Rob On Tue, Dec 2, 2008 at 12:21 PM, rtwas <[EMAIL PROTECTED]> wrote: > Hello, > > I upgraded to 2.2.7

[Emc-users] Subject and quoting please?

Guys, I am definitely not a moderator but ... I see lots of posts that have subjects not matching the content and complete quoted emails. Could we please try to get the subject of emails matching the content and quote only the necessary lines of the original email. Things are getting impossible

Re: [Emc-users] Pissed off

Thank you Greg, > but I have had some unrealistic expectations placed on me at work (my meat > and potatoes job) recently which I stood up against (successfully) > My MPJ just told me that I may get loads of time for my hobbies (they call it 'resturcturing' and 'making people redundant', I c

Re: [Emc-users] Homing

Jack Coats wrote: > I heard that Mach3 has a facility to 'home' an axis that has multiple stepper > motors on it, > designed for gantries with two motors on the X axis, where each leg of the > gantry has ahome switch. > > Ok, finally, the question. How can we do that with EMC2? A few hints how

Re: [Emc-users] Control panel vs GUI interface

> > It has occurred to me that there is no reason that I couldn't use two > keyboards - one actual and the > second wired to push buttons. (Has anyone done this?) Sure, there are things for sale that will do this but I just took an old USB keyboard (one that had seen too much coolant ...) and wir

Re: [Emc-users] Following error joint 2

Andy, > could it be that my z-axis is too slow for a certain movement? i think the > errors > happen on g0 commands after about 40mm of movement. if there is a time > constraint, the software could trap into a timeout and answer with a > following > error - but, to be hounest, this sounds ridicul

Re: [Emc-users] Making tons of money vs. the most interesting hobby ever.

Like Kirk I also think there is indeed a lot of value in doing it yourself. I just started to investigate all the opportunities but there is a real market for people who can do both design and prototyping/production. Last weekend I retrofitted my fully faired recumbent bicycle with a Rohloff hub,

Re: [Emc-users] Tandem Axes-YY

Jon Elson wrote: This is, in general, a bad idea to have a rigid tandem axis. > Define "rigid". Even a 1-foot steel I beam has some flex... Depending on the size and material there is always some flex in the system. I have a dual ball srews on both sides of my X-axis, some quick details on the s

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