Re: [Emc-users] canned cycles

2020-11-12 Thread R C
I'll check out that link. I am using linuxcnc 2.7.15 On 11/12/20 11:04 AM, ken.stra...@gmail.com wrote: Perhaps see https://www.forum.linuxcnc.org/26-turning/34298-support-for-g72-and-g71 ? What version of LinuxCNC are you using? -Original Message- From: R C Sent: November 12

[Emc-users] canned cycles

2020-11-12 Thread R C
Hello, I am trying to learn how to do canned cycles for a lathe (benchtop, Sherline) with linuxcnc So I watched some videos with some simple examples, but when I try running them in axis, it complains about "unknown g-code used. Wild guess here is that maybe some g codes are not

Re: [Emc-users] limit switch configuration on lathe in linxcnc (2.7)

2020-11-10 Thread R C
Hello Andy On 11/10/20 3:03 AM, andy pugh wrote: On Tue, 10 Nov 2020 at 02:57, R C wrote: I am trying to use the macros you wrote. It seems to work in axis, and tried the turning macro. emc/task/emctask.cc 389: interp_error: EOF in file:/usr/share/axis/images/axis-lathe.ngc seeking o-word

Re: [Emc-users] limit switch configuration on lathe in linxcnc (2.7)

2020-11-09 Thread R C
ing o-word: o from line: 0 EOF in file:/usr/share/axis/images/axis-lathe.ngc seeking o-word: o from line: 0 (it's possible I don't know what I am doing here... :)    ) Ron On 11/9/20 3:55 AM, andy pugh wrote: On Mon, 9 Nov 2020 at 04:37, R C wrote: when I home the X axis (with eit

Re: [Emc-users] limit switch configuration on lathe in linxcnc (2.7)

2020-11-08 Thread R C
Hi Andy, On 11/8/20 3:04 PM, andy pugh wrote: On Sun, 8 Nov 2020 at 21:59, R C wrote: I found that one, the "search speed" in stepconf. (I shouldn't use that I heard, since it resets other stuff, but playing with it for now.) You can carry on using stepconf unless or until you

Re: [Emc-users] limit switch configuration on lathe in linxcnc (2.7)

2020-11-08 Thread R C
On 11/8/20 3:04 PM, andy pugh wrote: On Sun, 8 Nov 2020 at 21:59, R C wrote: I found that one, the "search speed" in stepconf. (I shouldn't use that I heard, since it resets other stuff, but playing with it for now.) You can carry on using stepconf unless or until you start ha

Re: [Emc-users] limit switch configuration on lathe in linxcnc (2.7)

2020-11-08 Thread R C
On 11/8/20 2:47 PM, andy pugh wrote: On Sat, 7 Nov 2020 at 22:37, R C wrote: when I click the "Home All" button, it moves the Z axis really slow (and I mean REALLY slow). I assume that it should do that at jog speed? It should do it at the HOME_SEARCH_VELOCITY fr

Re: [Emc-users] limit switch configuration on lathe in linxcnc (2.7)

2020-11-07 Thread R C
e the  minus/negative direction for that axis? when I click the "Home All"  button,  it moves the Z axis  really slow (and I mean REALLY slow).   I assume that it should do that at jog speed? thanks, Ron On 11/6/20 8:53 PM, Jon Elson wrote: On 11/06/2020 09:08 PM, R C wrot

Re: [Emc-users] quick question on parallel port cables

2020-11-06 Thread R C
On 11/6/20 8:08 PM, andy pugh wrote: On Sat, 7 Nov 2020 at 02:48, R C wrote: You will need a cable that has ALL 25 pins connected (one to one), that's called a straight through It's a bit more than that, as some parallel cables only have enough wires to work a printer, and leave some out

Re: [Emc-users] limit switch configuration on lathe in linxcnc (2.7)

2020-11-06 Thread R C
ok... but,  if I  turn the  lathe an computer off..   then restart them   and want to home the lathe..  it wouldn't know how to do that unless it hit a limit switch? On 11/6/20 8:03 PM, Jon Elson wrote: On 11/06/2020 07:33 PM, R C wrote: I noticed I can (in stepconf,  which I shouldn't

Re: [Emc-users] quick question on parallel port cables

2020-11-06 Thread R C
you can also look for a "db25 extension cable" those are straight through.   they typically come  F-M,  but you can use a gender changer at either end if needed (but I have seen them FF MM FM) and are inexpensive. On 11/6/20 7:10 PM, andrew beck wrote: hey everyone I found that I am

Re: [Emc-users] quick question on parallel port cables

2020-11-06 Thread R C
On 11/6/20 7:37 PM, Robert Murphy wrote: A null modem cable wont be any good as they will have RX & TX crossed, and is primarily a cable for serial use. You will need a cable that has ALL 25 pins connected (one to one), that's called a straight through some dodgy parallel cables may have

Re: [Emc-users] quick question on parallel port cables

2020-11-06 Thread R C
looks like you'd need a db25 straight through. A null modem cable has certain wires hard wired (typical to ground), you probably don't want that. On 11/6/20 7:10 PM, andrew beck wrote: hey everyone I found that I am missing a parallel port cable for between one of my mesa 5i25 and 7i77

Re: [Emc-users] limit switch configuration on lathe in linxcnc (2.7)

2020-11-06 Thread R C
I noticed I can (in stepconf,  which I shouldn't use of course...) That I can use the limit switches as 'home'  for an axis only. Unless I am understanding this wrong,  I figured  an axis would travel there  and when it hits it thinks "I am home"  ? I see one axis move in the beginning of

Re: [Emc-users] limit switch configuration on lathe in linxcnc (2.7)

2020-11-06 Thread R C
well,  the X and Z axis only have one limit switch,  which pretty much  seems like it is a  home/limit-switch because of where they are On 11/6/20 5:23 PM, Leonardo Marsaglia wrote: ah, yes, I have not set any soft limits in the new configuration yet. Also wonder how to do that. In the

Re: [Emc-users] limit switch configuration on lathe in linxcnc (2.7)

2020-11-06 Thread R C
e hardware pin as your limit switch to home as well as the limit switch input for axis. Hope this helps! Matt On Nov 6, 2020, at 3:23 PM, R C wrote: Hello Leonardo, On 11/6/20 1:01 PM, Leonardo Marsaglia wrote: Hello Ron, If I understand correctly you are using your limit switches only w

Re: [Emc-users] limit switch configuration on lathe in linxcnc (2.7)

2020-11-06 Thread R C
conditions, you need to set up your soft limits as close as possible (given your machine's necessities) of the hard limit. Leonardo Marsaglia El vie., 6 nov. 2020 16:03, R C escribió: Hello, I am trying to configure the limit switches in linuxcnc, I think I can use them as home switches too.

[Emc-users] limit switch configuration on lathe in linxcnc (2.7)

2020-11-06 Thread R C
Hello, I am trying to configure the limit switches in linuxcnc, I think I can use them as home switches too. The switches get tripped, when teh cross slide is as close to the  chuck as it can be and as close to the user/operator as possible. I have it setup so that for example the

Re: [Emc-users] learning how to write a simple canned cycle.

2020-11-05 Thread R C
Hello Andy, On 11/5/20 4:52 AM, andy pugh wrote: On Thu, 5 Nov 2020 at 01:05, R C wrote: Where could I get it from, and how do I install it in 2.7 ? Download the ZIP file attached to the first forum post: https://forum.linuxcnc.org/41-guis/26550-lathe-macros?start=0#34357 (And note

Re: [Emc-users] learning how to write a simple canned cycle.

2020-11-04 Thread R C
On 11/4/20 5:53 PM, andy pugh wrote: On Thu, 5 Nov 2020 at 00:46, R C wrote: Currently I am using axis 2.7.15, I would like to try that. I am planning on building another machine for this later (with the newest linuxCNC) Is it a lot of work to still try the "pretty old&q

Re: [Emc-users] learning how to write a simple canned cycle.

2020-11-04 Thread R C
Hi Andy, On 11/4/20 5:31 PM, andy pugh wrote: On Wed, 4 Nov 2020 at 22:11, Mark Johnsen wrote: Andy Pugh (and others) can answer this better than I can, but here's a link to Andy's website on using the lathe: http://www.bodgesoc.org/lathe/lathe.html That's pretty old now. If you have the

Re: [Emc-users] learning how to write a simple canned cycle.

2020-11-04 Thread R C
https://forum.linuxcnc.org/31-cad-cam/487-lathe-programming?lang=fr=10 No program, but lathe setup info: http://linuxcnc.org/docs/html/lathe/lathe-user.html Good luck, Mark On Wed, Nov 4, 2020 at 1:52 PM R C wrote: Hello, I don't know if this is a topic for this list, but trying to learn how

[Emc-users] learning how to write a simple canned cycle.

2020-11-04 Thread R C
Hello, I don't know if this is a topic for this list, but trying to learn how to write a 'simple' canned cycle g-code program basically to learn how to  get started. let's say I want to make a simple shaft, stock is a little over 0.25",  and want one half of it to be  0.25" and the other

Re: [Emc-users] PC Wont Boot Debian 10

2020-10-26 Thread R C
Hi John, I ran into issues like that. different cards might give you different issues, some linux-es can be picky like that (especially when you'd have to mess with nouveau) The firmware it is talking about is the linux firmware I think, not the firmware on the board. Did you do the

Re: [Emc-users] CAD for parts to make on a lathe

2020-09-23 Thread R C
On 9/23/20 2:05 AM, andy pugh wrote: On Wed, 23 Sep 2020 at 04:44, R C wrote: Wonder if there is something like that for simple things on a lathe. I already mentioned my lathe macros. With that and G72 you don't really need CAM. Or even CAD. What I meant, with the rest of my email

Re: [Emc-users] CAD for parts to make on a lathe

2020-09-22 Thread R C
Wonder if there is something like that for simple things on a lathe. Ron On 9/22/20 9:32 PM, Gene Heskett wrote: On Tuesday 22 September 2020 15:17:21 R C wrote: Hi Chris, well, basically I just want to learn how to use them, by making some things I actually have a use for. For now on the lathe, I

Re: [Emc-users] CAD for parts to make on a lathe

2020-09-22 Thread R C
of the operator. If I needed to make a few of dozen parts (for maybe an MIT "mini cheetah" robot) I'd go for CNC so I could be certain the parts would interchange. On Mon, Sep 21, 2020 at 5:53 PM R C wrote: Hello, I was away for a while, I saw a lot of replies/suggestions on the &quo

Re: [Emc-users] CAD for parts to make on a lathe

2020-09-21 Thread R C
Hello, I was away for a while, I saw a lot of replies/suggestions on the "subject".   I am going to try and see if I can make the part (a shaft) in freecad, and see what I can do with it. As for the other software,  well I won't be making money of it, It's just a hobby,  BUT  I don't

Re: [Emc-users] CAD for parts to make on a lathe

2020-09-16 Thread R C
s. On my linux boxes at home I use Gimp, but I am not relly into graphics editing though. On Tue, Sep 15, 2020 at 11:38 PM R C wrote: On 9/16/20 12:09 AM, Chris Albertson wrote: Fusion 360 can generate g-code for mills and lathes. It's free even for commercial use until you make

Re: [Emc-users] CAD for parts to make on a lathe

2020-09-16 Thread R C
ux existed, BSD UNIX and Solaris but then one day I wanted to edit video and process images shot with an SLR. Adobe is the only game in town for professional-level media editing unless you consider Apple's Final Cut Pro X.None of this runs on Linux. On Tue, Sep 15, 2020 at 11:38 PM R C wrote:

Re: [Emc-users] CAD for parts to make on a lathe

2020-09-16 Thread R C
On 9/16/20 12:26 PM, Gene Heskett wrote: On Wednesday 16 September 2020 10:02:25 R C wrote: yesterday, I noticed some electronics in my little lathe fried/died, after I fix that I'll try to use it. Everybody knows this stuff runs on smoke & mirrors, so what did you do to break the mi

Re: [Emc-users] CAD for parts to make on a lathe

2020-09-16 Thread R C
On 9/16/20 12:26 PM, Gene Heskett wrote: On Wednesday 16 September 2020 10:02:25 R C wrote: yesterday, I noticed some electronics in my little lathe fried/died, after I fix that I'll try to use it. Everybody knows this stuff runs on smoke & mirrors, so what did you do to break the mi

Re: [Emc-users] CAD for parts to make on a lathe

2020-09-16 Thread R C
yesterday, I noticed some electronics in my little lathe fried/died, after I fix that I'll try to use it. On 9/16/20 7:45 AM, andy pugh wrote: On Wed, 16 Sep 2020 at 14:45, R C wrote: that sounds like something I had in mind, well, either that or just design a part with "something&

Re: [Emc-users] CAD for parts to make on a lathe

2020-09-16 Thread R C
I actually read something about how to do that, but one would need a plugin for the path workbench, and read is was not that reliable? I did play with rotating parts etc in freecad On 9/16/20 4:42 AM, N wrote: Hello, I have been using freecad for designing parts, and then milling them on a

Re: [Emc-users] CAD for parts to make on a lathe

2020-09-16 Thread R C
e: On Wed, 16 Sep 2020 at 07:38, R C wrote: Fusion is a little bit like Freecad but ... I have heard about that one. does it run on Linux too? No. Which looks like a deliberate choice as it _does_ run natively (and nicely) on OSX. It makes decent G-code, but I rarely bother. For almost ev

Re: [Emc-users] CAD for parts to make on a lathe

2020-09-16 Thread R C
have heard about that one.   does it run on Linux too? On Tue, Sep 15, 2020 at 9:39 PM R C wrote: Hello, I have been using freecad for designing parts, and then milling them on a sherline mill, getting the hang of that a little bit. I have a lathe too, that works with CNC linux

[Emc-users] CAD for parts to make on a lathe

2020-09-15 Thread R C
Hello, I have been using freecad for designing parts, and then milling them on a sherline mill, getting the hang of that a little bit. I have a lathe too, that works with CNC linux, but noticed heard, that  you can't really  make parts, or g-codes, with it for a lathe. What wold be a

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

2020-09-11 Thread R C
/an origin. It makes the math in the wizard much simpler, especially when you are doing something like rotating a rectangle. Alan From: Jon Elson Subject: Re: [Emc-users] cnc axis "Touch Off" Date: September 10, 2020 at 9:04:23 PM CDT To: "Enhanced Machine Controller (EMC)"

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

2020-09-11 Thread R C
to the CAM. My brain is pretty well fried but I think a bit of matrix algebra would do this for you. Dave On 9/11/20 6:43 AM, R C wrote: Hello Andy, That is interesting, I should learn more about these coordinate systems.  From a math/geometry perspective  there nothing that could keep you

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

2020-09-11 Thread R C
, if I make a part, is there a coordinate system, that would turn out the mirror image that part?) Ron On 9/11/20 1:54 AM, andy pugh wrote: On Fri, 11 Sep 2020 at 05:22, R C wrote: It sounds like the coordinate systems in essence are the same, they just have a different origin, for all

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

2020-09-10 Thread R C
ah ok, It sounds like the coordinate systems in essence are the same,  they just have a different origin, for all the other parts,   it's just the same thing, just translated and/or rotated for another part? Ron On 9/10/20 8:04 PM, Jon Elson wrote: On 09/10/2020 08:28 PM, R C wrote: I

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

2020-09-10 Thread R C
0 05:59 PM, R C wrote: I was just playing with it a bit, I have the idea, that , like homing is done per axis, "touching Off" is done per axis too? Yes, you should be able to select the axis that is to have its offset changed and then enter what that coordinate should be set to.  (

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

2020-09-10 Thread R C
. jrmitche...@gmail.com It works for all 4 configured axis's here. I assume you still have to do each axis separate, that's what I have to do it seems. "Good enough is the enemy of excellence"author unknown On Thu, Sep 10, 2020 at 2:51 PM R C wrote: Hello, this is probably a rooki

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

2020-09-10 Thread R C
h axis. It defaults to the last axis moved which is usually z. Dave On Thu, Sep 10, 2020, 19:01 R C wrote: I was just playing with it a bit, I have the idea, that , like homing is done per axis, "touching Off" is done per axis too? thanks, Ron On 9/10/20 4:50 PM, jrmitchellj

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

2020-09-10 Thread R C
itions. I use the end key to bring up the dialog and set the offset. --J. Ray Mitchell Jr. jrmitche...@gmail.com "Good enough is the enemy of excellence"author unknown On Thu, Sep 10, 2020 at 2:51 PM R C wrote: Hello, this is probably a rookie question, but sometime when I do a

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

2020-09-10 Thread R C
Hello, this is probably a rookie question, but sometime when I do a "Touch Off",  the Z-position indeed becomes 0,  but the X and Y are not.   Then in teh axis program, it will still go to the "first" spot where it needs to start milling, and in the  drawing it fllows the correct

Re: [Emc-users] LinuxCNC legacy or future

2020-09-08 Thread R C
well, I havebeen coding for a good long while,  I wouldn't know the first thing about CNC Linux, but would be interested in doing something with sensors, or those quadrature encoders...  BUT  it's pretty  hard to find any info about details like that, and how it would fit in (for example,  I

Re: [Emc-users] Error with ISO image

2020-09-07 Thread R C
I had some issues with it too.  Somehow  the installer messes up setting the boot dev in grub (or whatever it is called in debian.) The installer goes haywire if there are more then 1 drives, at least that is what I noticed. (don't know if that's your issue, it also sees activated SAS ports

Re: [Emc-users] Interesting GUI

2020-09-04 Thread R C
I agree there,  CNC Linux is pretty cool, it can do a lot more than I can ever learn about it..  and it's free... you can't complain about free...   especially if a ton of people like it.. On 9/4/20 6:16 PM, Phill Carter wrote: On 5 Sep 2020, at 4:53 am, Mark Wendt wrote: On Fri, Sep

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-14 Thread R C
Hi Chris, On 7/14/20 12:10 PM, Chris Albertson wrote: On Tue, Jul 14, 2020 at 10:50 AM John Dammeyer wrote: https://youtu.be/tlMTksuOuZQ Were you using LinuxCNC for this? Or did you write your own control software? This was done with Linux CNC. However, The purpose of me owning a mill

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-14 Thread R C
On 7/14/20 11:48 AM, John Dammeyer wrote: -Original Message- From: Chris Albertson [mailto:albertson.ch...@gmail.com] Sent: July-14-20 2:49 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] off topic: pwm with a stepper driver/motor Gene is correct when he wrote the

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-14 Thread R C
Hi Chris, for the go to part I am not "too worried"about that possibly not being too smooth, of course it is the goal to do that, but the point there is to get there. The equatorial tracking indeed needs to be as smooth as possible.  With the hearing I have I think I can run the stepper

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-14 Thread R C
Hello Gene, On 7/14/20 12:49 AM, Gene Heskett wrote: On Monday 13 July 2020 22:44:37 R C wrote: well,  I can calculate what the speed needs to be, also I can actually "observe" it too..  by pointing the  telescope at a star and see how much the deviation is.  I have encode

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-14 Thread R C
Hello Chris, On 7/14/20 12:31 AM, Chris Albertson wrote: On Mon, Jul 13, 2020 at 7:28 PM R C wrote: Interesting, but I already have the motors, and the gears are on their way. What I was really looking for is how to drive the stepper-drivers, he DM542 series ones. Do you have

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-13 Thread R C
yup exactly,  actually in a way  so I can point at things that you can't really see but  would need longer exposures for. On 7/13/20 9:28 PM, Chris Albertson wrote: On Mon, Jul 13, 2020 at 8:02 PM Dave Matthews wrote: It may just be my age but wouldn't it be easier to just use a 555 (do

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-13 Thread R C
button to change the speed while the button is pushed and a direction switch to toggle the direction pin on the driver. I guess I don't see the need for a computer to run a stepper at a constant speed. Dave On Mon, Jul 13, 2020, 22:46 R C wrote: well, I can calculate what the speed needs

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-13 Thread R C
s. On Mon, Jul 13, 2020 at 7:28 PM R C wrote: Interesting, but I already have the motors, and the gears are on their way. What I was really looking for is how to drive the stepper-drivers, he DM542 series ones. Ron On 7/13/20 7:53 PM, cogoman via Emc-users wrote: I recently di

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-13 Thread R C
gearboxes might be fine. https://www.omc-stepperonline.com/geared-stepper-motor/?sort=p.price=ASC Once you visit the stepperonline web page you know as much about them as I do, but their offerings might be just right for your application. On 7/9/20 2:23 PM, R C wrote: Hello, this is (probably

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-10 Thread R C
idea they either go with Real-Time Linux or use a very simple pulse generator running in an FPGA. Reading up to three quadrature encoders with just a Raspberry Pi might work, or not. I don't know. A lot depends on the speed of the encoders. On Fri, Jul 10, 2020 at 6:45 PM R C wrote: I do

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-10 Thread R C
steppers. With the encoders you would always know the exact angle though which the motor had rotated. The advantage would be the lack of any jerks in motion which are inherent with a stepper. Have you considered using the Clearpath units? See https://www.teknic.com/ -Original Message- From: R C

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-10 Thread R C
few hundred pulses per revolution I tried a few scenarios...  it doesn't seem to be a real problem to get a few hundred pulses in a few seconds at all. On Fri, Jul 10, 2020 at 6:45 PM R C wrote: I don't think anyone did, but I know that's how most do it... But that's just too easy :)

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-10 Thread R C
end up doing it the traditional way. One should never just accept "how it is done" but for many (most?) things there are good reasons for traditional ways. -Original Message----- From: R C [mailto:cjv...@gmail.com] Sent: Friday, July 10, 2020 9:43 PM To: emc-users@lists.sourceforge.n

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-10 Thread R C
I don't think anyone did,  but I know that's how most do it... But that's just too easy  :)    I would just like to see if I can do it, killing time On 7/10/20 7:39 PM, Ken Strauss wrote: I haven't been following this closely but has anyone suggested that you use a DC motor with an encoder?

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-10 Thread R C
from what I understand,  worm gears work really well  and because of the reduction, the motor needs to sping at a decent rpm, it doesn't have tospin that slow. I am using steppers, because it is easy to count the steps and then calibrate because of how much you're drifting.While with a regular

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-10 Thread R C
On 7/10/20 1:12 PM, Chris Albertson wrote: On Fri, Jul 10, 2020 at 10:33 AM andy pugh wrote: Sprockets for T2.5 belts are available with 10 teeth, so that would be a 2.3m table for the 300:1. Which is also probably too big. I suppose that the design criterion is that one stepper step should

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-09 Thread R C
h..  or more seriously... I use the encoders similar to a prenup,  hope I don't need it/them to correct  mis-steps...  but it doesn't hurt to have On Thu, Jul 9, 2020 at 1:48 PM R C wrote: there will be worm gears, and those will just gear all the axis/axes down down. On 7/9/20 1:23 PM, Chris A

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-09 Thread R C
Thu, 9 Jul 2020 at 19:26, R C wrote: The stepper motors I use with a stepper driver, those common DM542 ones, the stepper motors themselves are 2A and 1.8 degrees per step. ... As with PWM itself, I am probably just not too familiar with it. Do you mean PWM? Stepper drivers take step and

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-09 Thread R C
Hello Gene, To start with the end of your reply,  I actually am a mathematician  :) On 7/9/20 4:24 PM, Gene Heskett wrote: On Thursday 09 July 2020 14:23:57 R C wrote: Hello, this is (probably) off topic, been seen that happen.  If it is please ignore it. I am building a "moto

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-09 Thread R C
On 7/9/20 1:44 PM, andy pugh wrote: On Thu, 9 Jul 2020 at 19:26, R C wrote: The stepper motors I use with a stepper driver, those common DM542 ones, the stepper motors themselves are 2A and 1.8 degrees per step. ... As with PWM itself, I am probably just not too familiar with it. Do you

Re: [Emc-users] off topic: pwm with a stepper driver/motor

2020-07-09 Thread R C
gure out what the best method9s) are. for example what the connection is between pulses that are longer..  or shorter pulses with larger gaps between them. Ron On Thu, Jul 9, 2020 at 11:26 AM R C wrote: Hello, this is (probably) off topic, been seen that happen. If it is please ignore it

[Emc-users] off topic: pwm with a stepper driver/motor

2020-07-09 Thread R C
Hello, this is (probably) off topic, been seen that happen.  If it is please ignore it. I am building a "motorized"  telescope mount (dobsonian) with what is called an equatorial platform, it has 3 axis which I am going to drive with stepper motors. The stepper motors I use with a

Re: [Emc-users] Maths (wow)

2020-06-26 Thread R C
that is funny,  I am a mathematician, and actually took several classes involving projective geometry. What is shown is somewhat of "special case" scenarios it seems. I don't really see how projective geometry would apply to anything cnc, or be helpful, or apply to anything "real world"

Re: [Emc-users] Universal spindle speed control for $7

2020-06-19 Thread R C
RT kernel.  The ARM-M on the other hand is perfect for real-time. Notice the setup that "everyone" uses to control machine tools.  Linux/RT connected to Mesa/FPGA.  This is logically the same as Pi4 connected to ARM-M.  The concept is the same: Move the real-time stuff into hardware.

Re: [Emc-users] Universal spindle speed control for $7

2020-06-19 Thread R C
On 6/19/20 1:34 PM, Chris Albertson wrote: A 4:1 reduction is possible with gears. The sensor would be mounted the same way but displaced off axis 24 mm then fitted with a 80T gear and driven by a 20T gear that is itself driven by the drawbar. I would buy l gears (mod. 0.5 or Pi/2 mm pitch)

Re: [Emc-users] AC power for stepper motor drivers?

2020-06-08 Thread R C
this company's products when I was into tube-based audio. It is a US based company and they are easy to deal with. They also make much larger power supplies. It took me a while to "change gears" from audio to machine tools but both need big DC power. On Mon, Jun 8, 2020 at 1:44 PM

Re: [Emc-users] AC power for stepper motor drivers?

2020-06-08 Thread R C
I have one that does both,  for a larger stepper motor. It can take a bit of effort to find a DC PSU that can actually provide 5.5A the motor can 'pull', it's a lot easier to get a transformer for one (my driver is 48VAC-80VAC OR 24VDC-110VDC) Jus a transformer will provide the amps your

Re: [Emc-users] How to get data to HAL from USB, serial or socket?

2020-06-05 Thread R C
I have actually been wondering about the same/similar thing, on how to feed information into hall. On 6/4/20 2:33 PM, Chris Albertson wrote: I'd like to build a handheld pendant controller. I have some ideas about how it should work. One thing I want is an LCD screen. This could evolve

Re: [Emc-users] Encoder HAL programming.

2020-05-25 Thread R C
never done anything with those, and have a few RPIs lying around On 5/25/20 1:27 PM, andy pugh wrote: On Mon, 25 May 2020 at 20:15, R C wrote: I am actually trying to see how much I can push it by using a rpi for that, that's about the same price. An Arduino is possibly a better choice. You

Re: [Emc-users] Encoder HAL programming.

2020-05-25 Thread R C
that's what I thought too, it's pretty expensive. (probably low production runs etc., obsolete?). I am actually trying to see how much I can push it by using a rpi for that, that's about the same price. Ron On 5/25/20 1:07 PM, Jon Elson wrote: On 05/25/2020 11:01 AM, R C wrote

Re: [Emc-users] Encoder HAL programming.

2020-05-25 Thread R C
t can change quadrature into up/down pulses streams to use regular counters inside the Pi. John -Original Message- From: R C [mailto:cjv...@gmail.com] Sent: May-24-20 6:01 PM To: linuxcnc-users-list Subject: Re: [Emc-users] Encoder HAL programming. On 5/24/20 6:29 PM, andy pugh wrote

Re: [Emc-users] Encoder HAL programming.

2020-05-25 Thread R C
ers inside the Pi. But quadrature has one huge advantage over regular counters, you get both speed AND direction from every edge that goes by. John -Original Message- From: R C [mailto:cjv...@gmail.com] Sent: May-24-20 6:01 PM To: linuxcnc-users-list Subject: Re: [Emc-users] Encoder

Re: [Emc-users] Encoder HAL programming.

2020-05-25 Thread R C
into up/down pulses streams to use regular counters inside the Pi. John -Original Message- From: R C [mailto:cjv...@gmail.com] Sent: May-24-20 6:01 PM To: linuxcnc-users-list Subject: Re: [Emc-users] Encoder HAL programming. On 5/24/20 6:29 PM, andy pugh wrote: On Mon, 25 May 2020

Re: [Emc-users] Encoder HAL programming.

2020-05-24 Thread R C
On 5/24/20 6:29 PM, andy pugh wrote: On Mon, 25 May 2020 at 00:17, R C wrote: I have been following this thread. I wrote some code that runs on an RPI that can read a quadrature encoder, I have a few of them, with different resolutions. Is this something different to the normal LinuxCNC

Re: [Emc-users] Encoder HAL programming.

2020-05-24 Thread R C
Hello, I have been following this thread.  I wrote some code that runs on an RPI that can read a quadrature encoder, I have a few of them, with different resolutions. I also have a few encoders that came with some stepper motors I got my hands on, still have to play with those to see what

Re: [Emc-users] cloning hard drive to new SSD

2020-04-23 Thread R C
On 04/23/2020 12:10 PM, Rafael Skodlar wrote: Bravo. I'm horrified reading recommendations to use dd for cloning files on storage devices. dd copies fragmented files as is so you are messing new drive for performance issues from the get go. btw:  you can "practice" dd with a usb stick

Re: [Emc-users] cloning hard drive to new SSD

2020-04-23 Thread R C
On 4/23/20 11:10 AM, Rafael Skodlar wrote: On 2020-04-23 07:56, R C wrote: well, you can do it with dd, but the details are tricky at times. You are not just "cloning" a disk, like you used to copy a disk. I drive has multiple things, like an MBR, and partitions and such. Most o

Re: [Emc-users] cloning hard drive to new SSD

2020-04-23 Thread R C
correct  BUT  if you don't do that you won't have an exact copy,  and if you have "so so" sectors, you might not be able to fix that  on a "regular" copied drive.  Also, some of these copy utilities do not know why something is in a different order. (older copy protection worked like that, 

Re: [Emc-users] cloning hard drive to new SSD

2020-04-23 Thread R C
he right one. BTW, all the advice about the target drive being larger than the source: believe it. -- -- Glenn On Wed, Apr 22, 2020 at 8:59 PM nkp wrote: I use Clonezilla for this. Great-great program! https://clonezilla.org 23.04.2020 06:37, R C пишет: if the new disk is smaller, unlikely nowaday

Re: [Emc-users] cloning hard drive to new SSD

2020-04-22 Thread R C
if the new disk is smaller, unlikely nowadays, you might be able to shrink it  image you created (if you did), effectively it just truncates the file/iso and leave the empty space out. On 4/22/20 9:31 PM, Jon Elson wrote: On 04/22/2020 09:22 PM, andrew beck wrote: Hey guys. Just a quick

Re: [Emc-users] cloning hard drive to new SSD

2020-04-22 Thread R C
do you have access to a unix box?  because there it's really easy to do. Take the drive you want to "copy", connect it to a inix box and make sure it is not mounted. Look up whatthe device isin, /dev.   with most drive it should be something like /dev/sdb  or sdc etc.  you can see it when

Re: [Emc-users] latest/newest linuxcnc version

2020-04-04 Thread R C
Hi Andy, ahh...  ok, didn't know that,  so I just install 2.7.14, and update it.  It is on a network, so I can do that. thanks! Ron On 4/4/20 11:41 AM, andy pugh wrote: On Sat, 4 Apr 2020 at 17:57, R C wrote: the newest version of linuxcnc is 2.7.15, correct? I don't seem

[Emc-users] latest/newest linuxcnc version

2020-04-04 Thread R C
Hello all, the newest version of linuxcnc is 2.7.15, correct? I don't seem to be able to find the download link, can someone post it here? (I don't see a download link in the http://linuxcnc.org/2020/01/03/LinuxCNC-2.7.15/ page where you can actually get the iso, I am looking for the

Re: [Emc-users] Open source CNC architecture

2020-04-03 Thread R C
that's time travel, you'd get scenarios like this though: The replacement part you're thinking of since yesterday came in 2 weeks ago, we sent it back because you weren't there to pick it up within a week. You still owe us for shipping though. On 4/2/20 11:13 PM, Bari wrote: Machining

Re: [Emc-users] Open source CNC architecture

2020-04-02 Thread R C
my 2 cnts; I work in/with HPC, and run into that stuff all the time, and it is unavoidable. Since HPCs run diskless, and boot in/from a network, we simply build a complete new image, (and keep the older ones around). We never even update an image, we simply build a new one from scratch,

Re: [Emc-users] CNC terminology

2020-03-28 Thread R C
of it as just two ways to get the same end. On Thu, Mar 26, 2020 at 2:01 PM R C wrote: I figured something like that... On 3/26/20 1:34 PM, Bari wrote: The term 3D printing also used to be a blanket term until it was hijacked by the media and marketers to only mean CNC glue gun ty

Re: [Emc-users] CNC terminology

2020-03-26 Thread R C
. On 3/26/20 10:17 AM, R C wrote: 3D printing is called "Additive Manufacturing" just to make it sound better ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo

Re: [Emc-users] CNC terminology

2020-03-26 Thread R C
oncept. Rather like the sculptor standing next to 30ton block of granite saying he's removing anything that doesn't look like an elephant. sounds like it. On Thu, Mar 26, 2020, 11:35 AM Chris Albertson wrote:1 On Thu, Mar 26, 2020 at 8:19 AM R C wrote: Hello group/list, So I am at h

Re: [Emc-users] CNC terminology

2020-03-26 Thread R C
get the raw material and make chips out of everything that is not part. On Thu, Mar 26, 2020, 11:35 AM Chris Albertson wrote: On Thu, Mar 26, 2020 at 8:19 AM R C wrote: Hello group/list, So I am at home most of the time, working from home, like most of us probably, but since I can't really do

Re: [Emc-users] CNC terminology

2020-03-26 Thread R C
On 3/26/20 10:33 AM, Chris Albertson wrote: On Thu, Mar 26, 2020 at 8:19 AM R C wrote: Hello group/list, So I am at home most of the time, working from home, like most of us probably, but since I can't really do my job from home I have been directed to look into things like "Add

[Emc-users] CNC terminology

2020-03-26 Thread R C
Hello group/list, So I am at home most of the time, working from home, like most of us probably, but since I can't really do my job from home I have been directed to look into things like "Additive Manufacturing", g-codes etc etc... I was just thinking (ok ok ..  I am bored...)  But if

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