Re: [Emc-users] changing psu in a dell dimension.

On Mon, 26 Aug 2019 12:07:42 -0700 Chris Albertson wrote: > Could it be that a connected but unpowered DVD looks like a broken DVD and > the system has the DVD ahead of the hard disk in the boot order?Try > disconnecting the data cable to the DVD. > > How often do you use a DVD anymore,

Re: [Emc-users] Mesa 8i20 as a spindle drive

Driver has some kind of input? > Does anyone know if it would be possible to use a Mesa 8i20 for a 3 phase > spindle motor? No encoder just for a router. > > Thanks, >Curt > > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net >

Re: [Emc-users] (no subject) Position logger, sampler?

Not sure what position_logger.cc is and do not find the file then searching but myself used sampler, it could also log position or whatever signal is selected. > About position_logger.cc and my bad memory if I use xemc as nmlfile > obtain these error: > > bkt@bkt:~/linuxcnc-dev$

Re: [Emc-users] D. Garret's Dry Run LinuxCNC

> пт, 13 груд. 2019 о 18:38 Dewey Garrett пише: > > > Current Docs: > > > > > > http://buildbot.linuxcnc.org/doc/scratch/v2.9.0~pre0~dgarr-dryrun~6eca6ac/html/integrator/dryrun.html > > > > > >

Re: [Emc-users] (no subject) Position logger, sampler?

case (in my case i work inside linuxcnc-dev folder). > > regards > bkt > > Il giorno sab 14 dic 2019 alle ore 11:33 N > ha scritto: > > > Not sure what position_logger.cc is and do not find the file then > > searching but myself used sampler, it could also lo

Re: [Emc-users] (no subject) Position logger, sampler?

> ... > Refer to our testsuite for a simple standalone "UI" program which is > tested to correctly link in every build of LinuxCNC. > > https://github.com/LinuxCNC/linuxcnc/blob/master/tests/build/ui/nml-position-logger.cc > > For my side is a nice pieces of code that help me to understand the

Re: [Emc-users] linuxcnc versions, repository URL

> when I installed the 2.7.14 version,  it wants to connect to a repo that > doesn't exist. My HEAD got totally detached but remember I had to switch repository url before that happened a while ago. ___ Emc-users mailing list

Re: [Emc-users] Latency Warning Messages

> I bought 3 different low profile video cards to try and get rid of that > latency message. The ultimate and best solution was to buy the MESA 7i92H. > Does away with the parallel port completely. > John Dammeyer The parrallel port cause latency messages?

Re: [Emc-users] Next probably silly Q

The PWM tachometer signal most probably have really good noise immunity as timing is robust against noise. Might also have really good accuracy if derived from a clock with low jitter and slow enough clock drift. However very unlikely to make any noticeable difference on a fan. Once asked for

[Emc-users] pcb-rnd, save .pcb file as lihata fail to load lihata, library pile up, plated slot will try manufacture

I discovered starting with a .pcb file and saving it as a lihata file then loading it did not work. During loading of lihata file originally saved from there was a few long lasting dialogs with among them "clip polygon" or something similar and eventually after quite many secondes I gave up.

Re: [Emc-users] ESTOP and Machine Enable.

On Sun, 27 Oct 2019 12:43:04 -0700 "John Dammeyer" wrote: > What exactly is the difference in LinuxCNC with the red ESTOP button and the > orange Machine ENABLE button? Pressing the button several times do not result in accidentaly turning it on again. If you are in hurry then you press the

Re: [Emc-users] ESTOP Power Control --> relativel safe keep alive

On Wed, 23 Oct 2019 17:16:39 -0700 "John Dammeyer" wrote: > I've added back the safety aspect of an ESTOP event shutting down all high > voltages. The low voltage 24V stays on as does the PC/Monitor and the AC to > the PMDX-126 BoB. Ie. I have two 220VAC circuits. One for all the Motor >

Re: [Emc-users] ESTOP Power Control --> relativel safe keep alive

> ... > > > What's everyone else doing? > > > > For the emergency stop I would buy a real emergency button and connect so > > that power is cut to make machine stop. Then pressed it should also be > > sensed so that emergency stop in Linuxcnc is toggled. I would not trust > > emergency button in

Re: [Emc-users] ESTOP Power Control --> relativel safe keep alive

> > Even though it's unlikely it could fail. Commercial drives use to have a > > safe > > torque off input. I expect it work for AC motors but if a DC motor is > > overloaded semiconductors usually fail with short so it could run at full > > speed > > in one direction even if control signals are

Re: [Emc-users] Gnome v Patent Troll --> payment method

Prefer bank account because then I tell bank there money should be transferred and no one else. Then of course there must some kind of secure mechanism to communicate. For large amount of money I prefer an account there I have enter bank in person and bank is responsible for identification,

Re: [Emc-users] (Off topic) A Question Re: BOBs and Opto-Isolators

> Hello All -- especially Gene, > > I've seen many posts on the lists regarding breakout boards and dealing > with issues regarding slow opto-isolators. I have a question: > > Is anyone using: ISO776x > devices? Well, not exactly his one but there

Re: [Emc-users] Fotek SSR

> I have a bunch of Fotek SSRs, rated 385V / 40A. > > Well, that's what it says on the label. > > Perhaps I have been hanging around with Americans too long, but I > recently bought a bullet-casting melter. I wasn't happy with the > temperature controller, so I modified it with a PID controller

Re: [Emc-users] Homann Designs ModIO, OT but related to topic

if it might brake and what happen. > A movie was made based on this one, but of course it had to change a bunch of > stuff when sticking to the real details would have been plenty dramatic. > > https://en.wikipedia.org/wiki/CSX__incident > > On Saturday, February 8, 2020, 6:30:36 A

Re: [Emc-users] Open source CNC architecture

> > You care where the loop are because if they are in your PC you need a > > special PC with a special OS. > > Special PC? Pretty much any PC will work. I guess you could call the OS > special but not nearly as special as an RTOS on an external processor. > If you are really that terrified of

Re: [Emc-users] Open source CNC architecture --> mesa motion controller

> If " 'nix" were suddenly removed from the world the internet and a whole > bunch of other thing would disappear. > > Just to rock the boat: mesa (PCW) has a very nice motion controller for > an FPGA. 50 us cycle time, etc. "ALL" someone has to do is wrap  interp > and all the other

Re: [Emc-users] about NML - RCS_CMD_CHANNEL/EMC_CMD_MSG - EMC_AUX_ESTOP_ON

If you figure out what code do and comment is missing you could add it. Or you made agreement not to comment his code? > Not sure I understand what you meant here. > > > -Original Message- > > From: N [mailto:nicklas.karlsso...@gmail.com] > > Sent

Re: [Emc-users] Servo thread, message queque any problem?

> > . Do anybody no if there might be any problems sending messages to a > > message queue from a Linuxcnc servo thread? Or a Linux real time task? > > It is common for LinuxCNC user-space processes to connect to real-time tasks. > I know this happens in HAL ( halui is user-space as an

Re: [Emc-users] Open source CNC architecture

On Tue, 28 Jan 2020 22:27:01 -0800 Chris Albertson wrote: > On Mon, Jan 27, 2020 at 11:06 AM Gene Heskett wrote: > > > On Monday 27 January 2020 11:39:27 dave engvall wrote: > > > > > Linuxcnc get used because it works ... at least well enough to get > > > most jobs done. > > > > The topic

Re: [Emc-users] Real-time OS for machine controllers (do not worry to much)

> would not worry too much about who's RTOS you use. The concepts are > universal. First you come up with a high-level design and work out the > interfaces then you need to decide how wide of a range of hardware you need > to support. Then do some prototyping. You will very quickly have

Re: [Emc-users] Open source CNC architecture

> > ... > > The mindset at the larger companies is not one of the 'time is money' > rather than a cya attitude. The manager of the larger company answers to an > entity above. The entity above doesn't make the decision to install > LinuxCNC or not. The manager of the company makes the decision.

Re: [Emc-users] Real-time OS for machine controllers --> Micrium open source

clude technical support through the end of > 2020. > 2.Once the new licensing terms for the µC/ components are in place, you > may obtain the software at no cost for commercial use (without technical > support from Silicon Labs) > =

Re: [Emc-users] Open source CNC architecture --> RTOSes

On Tue, 4 Feb 2020 11:21:25 -0800 Chris Albertson wrote: > If LinuxCNC where to be ported, the best platform likely would not use an > OS like Linus or BSD or Windows.The RTOSes all are very different from > the more general-purpose OSes. Linux.BSD/Windows all have kernels and > can load

Re: [Emc-users] Probing a Profile --> Coordinate measurement machine

Anyone used a coordinate measurement machine and know how they do? Maybe I happen to have manual but will probably not have to much time to look into it this week. > I think it comes down to constructing lines perp to the profile at > probed points. CMM's obviously take care of this somehow. >

Re: [Emc-users] Homann Designs ModIO --> A little bit OT

If I got it correct a sales person said there new modern drives could be equipped with a cheap modbus module so it might still be useful even though it is an protocol. > The wiki for this is out of date. > http://wiki.linuxcnc.org/cgi-bin/wiki.pl?ModIO > > First of course the folder linkages

Re: [Emc-users] Homann Designs ModIO

Could see mb2hal files in my directory so I guess they are normally compiled. If I got it correct a sales person said there new modern drives could be equipped with a cheap Modbus module so it might still be useful even though it is an protocol. > The MB2HAL module should be able to talk to it

Re: [Emc-users] Linuxcnc 2.9.0 hangs

In synaptic, the dialog about where to get packages on the tab updates, there is text "buster/updates" and "buster-updates" so I guess it must be buster. /proc/version claim it is (Debian 8.3.0-6) > On 2020-02-02 22:06, N wrote: > > > Pretty sure

Re: [Emc-users] Homann Designs ModIO --> reltime serial but Ethercat worse

> > With how cheap realtime i/o is - I don't see the a lure of modbus. > > Modbus non-realtime should be plenty fast enough for spindle control > unless you are doing position control of the spindle. I'm not sure about > RTAI but if you are using preempt-rt mb2hal should be pretty close to >

Re: [Emc-users] Homann Designs ModIO, OT but related to topic

> My 2 cents. For some things non-realtime i/o is fine. I have seen too > many times where someone is maybe controlling a spindle and wonders why a > change in direction takes so long and or isn't consistent. Once they > switch over to something realtime (+/-10v or pwm) the issue goes away.

Re: [Emc-users] Homann Designs ModIO, OT but related to topic

> On 02/07/2020 11:43 AM, N wrote: > > Are however not sure the westinghouse system is better > > there pressure is loaded then breaks are not used. First > > time I heard about the accident there an oil train have > > crashed then driver was sleeping and left engine

Re: [Emc-users] Real-time OS for machine controllers

rtems could without doubt be worth a try but have only used FreeRTOS and it work. FreerRTOS usually run scheduler at 1kHz and using one of the newer Micro controllers like Cortex-Mx which is a very common CPU in these with prioritized interrupts for higher priorities work really well. There is

Re: [Emc-users] Open source CNC architecture --> EMC, Electro Magnetic Compability

> ... > The EMC(squared) corporation threatened to sue over anything > that used "EMC" in it, > and so the name had to be changed. LinuxCNC is totally the > continued development > of EMC2, just under a different name. > > Jon Also avoid confusion with Electro Magnetic Compability (EMC) which

Re: [Emc-users] Linuxcnc 2.9.0 hangs

> On 2020-02-01 20:46, Jon Elson wrote: > > On 02/01/2020 08:35 PM, Thomas D. Dean wrote: > >> I have been using linuxcnc 2.9.0~Pre0 from sources, run in place. > >> Until today, it has worked, mostly.  Before today, about 2x per week > >> it would freeze and I had to cycle power to get it

Re: [Emc-users] Open source CNC architecture - open source complexity OT, more off it

> Some colleges and universities offer many online courses for free or very low > cost. The online course materials are identical to what's used in the classes > at the schools, and lectures are either recorded from actual classes or are > the same material the professors present to a class.

Re: [Emc-users] [Emc-developers] Looking to make hex offset list for NML status shared memoryr

ange? > John > > > > > -Original Message- > > From: N [mailto:nicklas.karlsso...@gmail.com] > > Sent: February-17-20 12:38 PM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] [Emc-developers] Looking to make hex offset list >

Re: [Emc-users] [Emc-developers] Looking to make hex offset list for NML status shared memoryr

> On 17/02/2020 18:15, Johannes Fassotte wrote: > > I'm reviewing currently available documentation from the NIST on how a > > remote user is fed status information. From what I can tell based on > > my experiments is that the raw data file is sent to the remote for > > decoding and that the

Re: [Emc-users] Open source CNC architecture

> > Go for it. If you design the board the LinuxCNC developers would be very > > willing to help you integrate it with LinuxCNC. Of course you'll have to > > be able to produce it at a price that makes it attractive to buyers. > > > > No. do not produce yet another board. You want to use an

Re: [Emc-users] Open source CNC architecture

> ... > >> I guess what I am suggesting is that it's time for LinuxCNC to be > >> broken apart and a standardized interface for Ethernet control be > >> developed.  Once that could talk to dumb FPGA devices like the 7i92H > >> or to full blown standalone CNC controllers that can act as simple

Re: [Emc-users] Open source CNC architecture

> While I don't have a problem with separating the motion control and the HMI > hardware. (it is how most commercial CNCs have done it for the past 30 years > or more.) Have an old Sodick wire EDM built this way and think it is a rather good idea though which components are readily available

Re: [Emc-users] Open source CNC architecture - open source complexity OT, more off it

> > There are plenty and quite many scientific articles available for free on > > Internet. Universities at least have some check, quite often a written Exam > > before course could be passed, a little hard to check what kind of > > books/articles someone have read and even more so what they

Re: [Emc-users] about NML - RCS_CMD_CHANNEL/EMC_CMD_MSG - EMC_AUX_ESTOP_ON

> @ John Dammeyer > > I'm quite sure that labview project at least work great the difficult > is study lcnc code (write in a good way but not rich of comment ... on the > other hand, I agree not to comment too much on his code) Something adding some comments to code then you read it?

Re: [Emc-users] trying to connect a encoder from cnc spindle motor to schiender vfd --> (sin, cos) resolver

On Fri, 14 Feb 2020 08:14:18 -0800 Chris Albertson wrote: > Looking at the PDF, It seems I forget to ask one question about the signal: > Is the sin/cos signal single-ended or differential? In other words is it > referenced to ground or do we get pins with labels like sin+ and sin- These

Re: [Emc-users] trying to connect a encoder from cnc spindle motor to schiender vfd

> On Friday 14 February 2020 02:01:08 andrew beck wrote: > > > Chris. I'm still learning electronics. Could you expand a bit on > > this please. > > > > Maybe draw a napkin sketch of it. Sorry to be a bit slow on the > > uptake > > I'm not Chris, but the word quadrature means two signals that

Re: [Emc-users] Open source CNC architecture

On Fri, 14 Feb 2020 22:04:51 + Todd Zuercher wrote: > Retrofitting a CNC machine is comparable to retrofitting the drive train of > an automobile (or even just it's control systems). Doing so in a modern car > requires quite a lot more technical knowledge than doing so with a vehicle >

Re: [Emc-users] Open source CNC architecture --> printer driver postscript <-> g-code

Printers talk postscript while CNC machines talk g-code, well not always but quite often. > As an example look at the two articles in December and February Circuit > Cellar Magazine by Raul Alverez-Torrico on building a 4-DOF robotic arm. > https://circuitcellar.com/ > > He uses Matlab to do

Re: [Emc-users] Open source CNC architecture --> steam engine no, pyrolis yes, OT!

> And you? You think that doing things the same old way is better? Steam > engine driving machines with pulley transmission in your work shop? As I understand it steam engine does not have the best efficiency, pyrolysis and compression ignition is probably better, maybe some steam in a

Re: [Emc-users] Open source CNC architecture --> printer driver postscript <-> g-code

> On Sat, 15 Feb 2020, 19:41 N, wrote: > > > Printers talk postscript while CNC machines talk g-code, well not always > > but quite often. > > > > And just as some folk hand-write G-code, I know a chap who habitually > creates graphics in raw postscript.

Re: [Emc-users] need a patch tut

On Tue, 14 Jan 2020 13:26:07 -0800 Chris Albertson wrote: > You are applying 300 patches all at once? The chance of that working > is about zero. Or you are the most lucky programmer ever. ___ Emc-users mailing list

Re: [Emc-users] OT - simple motor wiring

> > On 21 Jan 2020, at 18:30, Jon Elson wrote: > > > > The black-red winding has huge inductance -- HALF a Henry! > > It is a 3W 120V motor. It’s going to eat milliamperes. Maybe not to few, I would expect low efficiency. ___ Emc-users mailing

Re: [Emc-users] looking for advice on best wiring practices and grounding on cnc mills

Current used to power device will cause some voltage drop in ground so grond potential at device will be higher. Ground potential will also vary with power used by device. This higher potential might cause a problem if there for example is digital communicatin between devices. > A ground loop

Re: [Emc-users] X Axis oil passages

> > From: Andy Pugh [mailto:bodge...@gmail.com] > > > On 25 Dec 2019, at 08:32, John Dammeyer < > > > jo...@autoartisans.com> > > wrote: > > > > > > But how do I block the slot so the oil doesn't fall off the edge. > > > > Maybe drill a hole normal to the surface

Re: [Emc-users] looking for advice on best wiring practices and grounding on cnc mills

> On Thu, 26 Dec 2019 at 19:03, Chris Albertson > wrote: > > > All the rules try to do the same thing, connect nuetral to ground ONLY > > at the building service entrance > > Off-topic, but that isn't the only way to do it. > https://en.wikipedia.org/wiki/Earthing_system > Is an interesting

Re: [Emc-users] looking for advice on best wiring practices and grounding on cnc mills

neglible voltage drop in cables used for communication in between devices. > I think you are confusing ground and neutral. Ground should never > move off zero. But the neutral can be up to about 5 volts above > ground. > > On Thu, Dec 26, 2019 at 2:26 PM N wrote: >

Re: [Emc-users] disconnect .var file

Have a line in my filename.ini file like the one below, where filename is whatever name of your configuration files have. HALFILE = filename.hal > Hello! > Can I somehow disconnect .var file? > Is it possible ? > > To replace it: > > #!/bin/bash > > rm

Re: [Emc-users] Backing up an old drive

You most probably backup data, in Linux the "/home" folder including all subdirectories. Not sure if it is possible to save a list of installed packages in Linux. CD-ROM is cheapest if there is enough space, DVD is larger and magnetic tape provided you use modern tape drive is the largest. >

[Emc-users] Small torque, spindle gear box clutch?

Try to run spindle motor om a machine today, this is my first CNC machine so I am a little bit uncertain. Motor run but spindle does not, there of course is a possibility gear box i broken but in such case I would have expected noise, there is some torque on spindle make it move slowly but not

Re: [Emc-users] Easy to heat treat high speed tool steel

> Thank you Dave, for bringing this tough steel to our notice. > > In the fact sheet on the steel, the thing I checked first was the End Milling > section. > > Cutting Parameters High Speed Steel Carbide: Insert > Carbide: Solid > > metres/minute 8 to 12

Re: [Emc-users] Small torque, spindle gear box clutch?

> On Sun, 12 Apr 2020 at 16:09, N wrote: > > > There some kind of electrical connection. Anybody have any idea if it is > > common to have some kind of clutch for spindle? > > Yes. My lathe, for example, has a 2-speed gearbox that contains two > electromagnetic clut

Re: [Emc-users] linuxcnc on modern hardware

> On 19.04.20 20:05, N wrote: > > Plenty available cheap and no reason to user newer. > > I cannot order legacy parts through my local parts distributor. ? Don't have to, if computer break down I get a new one. Throw away two broken monitors a while ago and a broken computer

Re: [Emc-users] linuxcnc on modern hardware

> Hi, > For reasons I dont understand, many people prefer to use extremely legacy > hardware to run linuxcnc. Plenty available cheap and no reason to user newer. ___ Emc-users mailing list Emc-users@lists.sourceforge.net

Re: [Emc-users] Small torque, spindle gear box clutch?

suring the voltages in the electric cabinet. > > Peter > > Am 12.04.2020 um 20:48 schrieb N: > >> On Sun, 12 Apr 2020 at 16:09, N wrote: > >> > >>> There some kind of electrical connection. Anybody have any idea if it is > >>> common to have some

Re: [Emc-users] linuxcnc on modern hardware

> On 4/19/20 11:12 AM, René Hopf via Emc-users wrote: > > For reasons I dont understand, many people prefer to use extremely legacy > > hardware to run linuxcnc. > > It's not a preference, it's an artifact of the situation: CNC machines > have lifetimes measured in decades, while PCs go from

Re: [Emc-users] Suggestions for encoder cable?

On Fri, 10 Apr 2020 01:05:03 +0100 andy pugh wrote: > On Fri, 10 Apr 2020 at 00:58, Todd Zuercher wrote: > > > > I've liked the cables I've gotten from Igus. > > https://www.igus.com/product/1074 > > This looks good for a dedicated encoder cable: > https://www.igus.com/product/1117 Without

[Emc-users] Machine accuracy

Finally got things running well today. According to scale then moving to point at standstill accuracy is around a few micrometers for table and a few times more in "Z" direction. This corresponds to a few encoder pulses for table and a few times more for "Z" direction. Did not check check then

Re: [Emc-users] Cheaper than normal FHA-25B

Pretty sure I read an article about harmonic drives and cycloidal drive from local university. > There are two good tutorials on designing the gears. Both depend more on > geometric construction than math. They first generate some points then > fit a spine. I've read this is not-exact but

Re: [Emc-users] Cheaper than normal FHA-25B

Harmonic drive but they are expensive. > I've been thinking about 4th axes; > While motorised reduction drives are readily available, the issue is > obviously backlash. > > One way to make a zero backlash drive is to use two identical > gearbox/drives. Place them at opposite ends of the axis,

Re: [Emc-users] timestamp ethernet hardware

> I think timestamping was a benefit, esp for PPMC. > > I just read about the new Teensy4.1 having ethernet hardware with PTP. > > Then I checked to see if there were off the shelf ethernet cards with > PTP ( there are ). > > Is harwdare generated, timestamped packets of use to linuxcnc? If I

Re: [Emc-users] Interesting GUI

On Sat, 5 Sep 2020 08:08:17 -0400 Mark wrote: > On 9/4/20 6:13 PM, John Dammeyer wrote: > > >> > >> Never said I changed from Mach 3 to LinuxCNC. I've not owned a Windows > >> machine for the better part of 30 years. > > Oops. Sorry. For some reason I thought you had. What I'm looking for

Re: [Emc-users] Interesting GUI

> On Wed, 2 Sep 2020 at 22:42, Kirk Wallace wrote: > > > Given enough development time and money, my guess is that a LinuxCNC GUI > > could be very similar. The only basically new feature is the swipe and > > gesture touch feature, which Linux/LinuxCNC should be able to use. Or, > > ... I may be

Re: [Emc-users] Tool presetter

On Mon, 31 Aug 2020 14:42:12 -0700 "John Dammeyer" wrote: > I have one of these. > Fowler 54-575-600 Electronic Edge Finder with Cylindrical Tip, 0.200" Stylus, > 1/2" Shank Thinking about it there is no need to probe height of part so no need for z direction, just have to place tool

Re: [Emc-users] Interesting GUI

> нд, 6 вер. 2020 о 01:35 andy pugh пише: > > > > > I wonder if installing NativeCAM by default would be an idea? > > (the problem there is that it is not part of the LinuxCNC project, > > it's hosted separately) > > > > That is a great idea! > We know that LinuxCNC has almost endless

Re: [Emc-users] Tool presetter

> > From: N [mailto:nicklas.karlsso...@gmail.com] > > On Mon, 31 Aug 2020 14:42:12 -0700 > > "John Dammeyer" wrote: > > > > > I have one of these. > > > Fowler 54-575-600 Electronic Edge Finder with Cylindrical Tip, 0.200" > > &

[Emc-users] G42 G43 Cutter compensation have to overshoot

Starting to write some useful G-code I discovered I had to overshoot motion then using G42 or G43 tool compensation to approach from the right direction. This will produce some extra unneeded motion. Is there any method to get around this extra motion approaching from the right direction then

Re: [Emc-users] Tool presetter

> I have one of these. > Fowler 54-575-600 Electronic Edge Finder with Cylindrical Tip, 0.200" Stylus, > 1/2" Shank > > I use it with the Shumatech DRO to find edges or the center of something > round. The DRO-350 has a feature for that. Eventually I'll wire up a cable > that can be

Re: [Emc-users] Tool presetter

> I have one of these. > Fowler 54-575-600 Electronic Edge Finder with Cylindrical Tip, 0.200" Stylus, > 1/2" Shank > > I use it with the Shumatech DRO to find edges or the center of something > round. The DRO-350 has a feature for that. Eventually I'll wire up a cable > that can be

[Emc-users] Cutter compensation

First thing I noticed then reading about cutter compensation is some use G41,G42 while Linuxcnc use G42,G43 for different side of cutter. Sometimes I get a little bit confusing moves. Turning off cutter compensation with G40 and move in one direction only and it seems to decompensate in other

Re: [Emc-users] Cutter compensation

started working with CAM for my > turning programs I like to let the software do all the compensation. By the > way, I'm talking only about lathe programs. I don't know if this could be > an advantage for the mill machine user. > > El lun., 7 sept. 2020 a las 16:51, N () > esc

Re: [Emc-users] Cutter compensation

> On Mon, 7 Sep 2020 at 20:20, N wrote: > > > > First thing I noticed then reading about cutter compensation is some use > > G41,G42 while Linuxcnc use G42,G43 for different side of cutter. > > I don't think so. G43 is cutter _length_ compensation. Yes readi

Re: [Emc-users] cnc axis "Touch Off"

There are two buttons "Touch Off" and "Tool Touch Off". You always use the same? > Jon, > > I wrote a bunch of wizards for my mill and my lathe. I use one coordinate > system for the origin of the main part and a different origin for each each > wizard as it is called so that the wizard works

Re: [Emc-users] LinuxCNC legacy or future

> ... > Another comment was negative towards python. That was me. Prefer languages with static datatypes then possible, one reason is then using static datatypes it is possible to check if pieces fit together before program is run, this is usually done by compiler. There are also a few other

Re: [Emc-users] LinuxCNC legacy or future

> On Mon, 7 Sep 2020 at 22:31, Rafael Skodlar wrote: > > > IMO it's extremely bad to attack those who come up with "it would be > > nice to have this or that" in existing product. Saying, "it's open > > source, go fork and write your own code" is plain STUPID! We are not all > > programmers! [1]

Re: [Emc-users] Another possibly silly Q for Peter or Andy.

> On 09/09/2020 11:08 AM, Gene Heskett wrote: > > Is it possible to get an enable signal, per axis, from the mesa cards > > that would become true, hopefully a couple micky-secs ahead of the first > > stepper pulse so no missed steps would normally occur, losing its home, > > and go back false

Re: [Emc-users] Cutter compensation

> On 09/07/2020 03:24 PM, Leonardo Marsaglia wrote: > > Is it any advantage in using cutter compensation when programming the > > g-code using CAM? Because since I've started working with CAM for my > > turning programs I like to let the software do all the compensation. By the > > way, I'm

Re: [Emc-users] Interesting GUI

> On 9/2/20 12:55 PM, andy pugh wrote: > > Not much of it, but it does make Axis look a little old-fashioned.. > > > > https://youtu.be/ZgqCY3gUHcM > > > > > A little more information: > > https://www.youtube.com/watch?v=AWVdVtgyldQ Have monitor on one of my machine on a flexible arm, also

Re: [Emc-users] Tool presetter

; > > Subject: Re: [Emc-users] Tool presetter > > > > > > > -Original Message- > > > > From: N [mailto:nicklas.karlsso...@gmail.com] > > > > Sent: August-31-20 9:21 PM > > > > To: Enhanced Machine Controller (EMC) > > > &g

[Emc-users] Tool presetter

Anyone have any experience on where to find a good tool presetter? And/Or edge detector? As tool usually is a rather good conductor and sensor could be made of conductive material most obvious would be simple spring loaded contact meausurement for both. I found Nissin have a Centering Gauge

Re: [Emc-users] Tool presetter

> On Mon, 31 Aug 2020 at 18:41, N wrote: > > > As tool usually is a rather good conductor > > Yes, even carbide. > > > and sensor could be made of conductive material most obvious would be > > simple spring loaded contact meausurement for both. > >

Re: [Emc-users] OT: Synchronised motion using RS485/CAN bus motors

CANopen have a special sync message which is used for synchronization. You probably want cyclic synchronization communication, messages are sent anywhere within communication period and start to be used then synchronization message is sent. Synchronization message may have som jitter, it does

Re: [Emc-users] OT: Synchronised motion using RS485/CAN bus motors

> I think the question was intended to be more theoretical and asks about > "exactly" synchronizing commands. The LinuxCNC/SPI solution is not > that. SPI works only because it is so fast that the error in > synchronization is tiny and goes unnoticed. Using a Micro controller it is possible

Re: [Emc-users] OT: Synchronised motion using RS485/CAN bus motors

> ... > On CAN you can take advantage of the fact that all devices read the bus at > the same time. Each reader decides what information it wants to read and > ignore the rest so a time-sync heartbeat could be implemented if the nodes > all needed to be time synchonized. ... Yes all devices need

Re: [Emc-users] OT: Synchronised motion using RS485/CAN bus motors

> I thought of one bus per leg, but the Raspberry Pi only supports two CAN > busses and I think this is a common limitation not just on the Pi. But > I think we just figured out that one CAD FD can do 12 motors at 20 Hz. It is more or less possible to configure mapping of dictionary into PDOs

Re: [Emc-users] OT: Synchronised motion using RS485/CAN bus motors

> > > I thought of one bus per leg, but the Raspberry Pi only supports two CAN > > > busses and I think this is a common limitation not just on the Pi. But > > > I think we just figured out that one CAD FD can do 12 motors at 20 Hz. > > > > It is more or less possible to configure mapping of

Re: [Emc-users] OT: Synchronised motion using RS485/CAN bus motors

> > > The problem with relative is it turns again into the equivalent of a > > > toggle message. Miss one and your position is wrong. So I would > > never do that. > > > > Agree, almost. It is in most cases possible to use a 16 bit value and keep > > track of the overflows provided it does

Re: [Emc-users] OT: Synchronised motion using RS485/CAN bus motors

> The way to handle things like overflows in real-world robots is to use > real-wold units in the data. The lower level controls on each motor does > the conversion. So the motor command is in radians per second and is in > floating-point. The encoder reports its angle in radians, in >

Re: [Emc-users] OT: Synchronised motion using RS485/CAN bus motors

> > From: Frank Tkalcevic [mailto:fr...@franksworkshop.com.au] > > > You subject line says RS485/CAN which are dramatically different from the > > SPI based synchronous clocked serial interfaces. Even RS485 and CAN are > > dramatically different. > > > > Thanks for the replies... > > > > The

Re: [Emc-users] OT: Synchronised motion using RS485/CAN bus motors

> Have a read on the manuals for the Yaskawa Legend 01 or 04 > > It uses serial at 9600 !!! to command the drive. (RS232 serial, or > ethernet interface) > The trick it uses is to send only new, relevant data, and not fixed packets Good enough for configuration but not coordinated movement in

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