Re: [Emc-users] Encoder down

On 03/03/2019 06:28 PM, a k wrote: i did open one motor before, very same type. it did not work after. Yes, for AC servos, the encoder has to be aligned to the magnets in the motor. Jon ___ Emc-users mailing list Emc-users@lists.sourceforge.net

Re: [Emc-users] Encoder down

On 03/03/2019 05:35 PM, andy pugh wrote: On Sun, 3 Mar 2019 at 23:26, a k wrote: I just found that encoder on my servomotor stop working. I turn shaft and number does not changing. Enverything was good yesterday . Today not. It is servodynamic motor. Company not exist any more. Maybe the LED

Re: [Emc-users] Wondering out loud.

On 03/01/2019 08:27 AM, Gene Heskett wrote: The reason I ask is that I am wondering where one might source a larger one of this same family of motor products. There is no markings on these motors at all unless on the face flange where it bolts to the machine. Have you looked at Automation

Re: [Emc-users] No clean solder flux, how to buy in Sweden

On 02/24/2019 08:48 AM, Gene Heskett wrote: I've noted a general lack of availability of decent rosin cored solders here too. The anti lead folks are getting laws passed by people who have no knowledge of the technology involved. So called lead free, is mostly tin, and tin grows whiskers that

Re: [Emc-users] head scratcher, updated

On 02/23/2019 02:34 PM, Gene Heskett wrote: On Saturday 23 February 2019 12:22:54 Jon Elson wrote: On 02/23/2019 10:41 AM, Peter C. Wallace wrote: Umm just loaded a software stepgen (lastet master) and it has no such pins/parameters Right, MIN_LIMIT and MAX_LIMIT are not handled by stepgen

Re: [Emc-users] head scratcher, updated

On 02/23/2019 10:41 AM, Peter C. Wallace wrote: Umm just loaded a software stepgen (lastet master) and it has no such pins/parameters Right, MIN_LIMIT and MAX_LIMIT are not handled by stepgen or any motion interface hardware, they are handled much higher in LinuxCNC. To reach a smooth

Re: [Emc-users] DIY CNC builder dilemma, open request for comments

On 02/18/2019 10:58 AM, Rafael Skodlar wrote: However, I started to wonder last year what's the future of LinuxCNC? What concerns me most is the computing part mainly based on silly old PC architecture from the 80's. Using PCs for that purpose made sense in the early 1990s to about 2010

Re: [Emc-users] Postman semi-good to me today

On 02/15/2019 04:36 PM, Gene Heskett wrote: He brought me a new mirror insert for the ditch side mirror i wiped out Monday, fit perfectly. And the solenoid air valve. Purty, chrome plated, and has a coil R of about 2.1 ohms, no way I can switch that much 12 volts with a Mesa 7i76D. So that will

Re: [Emc-users] G43 question

On 02/12/2019 08:38 PM, Ken Strauss wrote: G43 appears to only apply the Z-offset from the tool table. For example, running the program below displays the Z values as expected but the X values are identical. Would having LinuxCNC also apply the X offset cause problems? Assuming we are talking

Re: [Emc-users] CNC Press Brake at TXRX Labs

On 02/04/2019 09:47 PM, Chris Kelley wrote: I've been working on retrofitting a CNC press brake at TXRX Labs in Houston, TX. Hey, Chris, don't know if you remember me, but I was down at TX/RX for the LinuxCNC meeting in 2014, and worked on the Powerhawk a little bit with you. Tx/RX is

Re: [Emc-users] relay reaction time q?

On 02/02/2019 07:46 PM, Gene Heskett wrote: For Jon Elson in particular. On the typical BoB with a relay to be used as spindle control, on the SainSmart for instance its activated by pin 14 going true. Whats the reaction time for one of those teeny 5 volt coil relays including a reasonable

Re: [Emc-users] cutting thin alu panels problems, was 6040 problems

On 01/30/2019 09:58 PM, Gene Heskett wrote: I think the best and cheapest for alu would be the 91% isopropol in a mister, running pretty close to dry. Well, I built a flood coolant system years ago, and use that when conditions merit. See the last picture here:

Re: [Emc-users] Nice manual lathe in WA (assume WA USA not WA AU)

On 01/30/2019 06:35 PM, Dan Bloomquist wrote: I would have preferred a shorter bed, but it is what I could afford. It looks like Jon's is a 5 footer, I think mine is a 6. These things came in 5,6, and 8 feet. I also have a 6 foot bed. That works out fine, NEVER needed any more on my

Re: [Emc-users] Tip for Coolant misters

On 01/30/2019 04:26 PM, Gene Heskett wrote: Thats another good idea. But my local iso booze pedlar CVS would surely want to know what it is that I am doing with all that 91% I'm using. :) Don't go to the pharmacy, go to the paint dept. of the hardware store, they have isopropyl, denatured

Re: [Emc-users] Nice manual lathe in WA (assume WA USA not WA AU)

On 01/30/2019 12:35 PM, Dan Bloomquist wrote: Jon Elson wrote: There's plenty more to it, but those are a few of the highlights. The Sheldon R-series was made in 13, 15 and 17" models. My 15" with six foot bed weighs 3500 Lbs. Good for stability. My previous lathe was a

Re: [Emc-users] cutting thin alu panels problems, was 6040 problems

On 01/30/2019 11:39 AM, andy pugh wrote: On Wed, 30 Jan 2019 at 17:37, Jon Elson wrote: Keeping these cold is a huge help, even getting up to body temperature starts to interfere with the cutting! Dry ice? Dry ice is cold enough it could cause warping, or just throw the dimensions off

Re: [Emc-users] cutting thin alu panels problems, was 6040 problems

On 01/30/2019 10:52 AM, Gene Heskett wrote: Panel is soft alu, about 80 thou thick. Oh, that's another issue! 2024 cuts great, 6061 and 5052 with a heat treat cut pretty well. Soft stuff like 1000 (or is it 1100?) and 3003 can be a bit difficult. They tend to mash a bit rather than cut.

Re: [Emc-users] Nice manual lathe in WA (assume WA USA not WA AU)

On 01/29/2019 08:46 PM, andy pugh wrote: On Sat, 26 Jan 2019 at 16:16, Jon Elson wrote: The spindle is driven by triple matched belts, to keep gear vibration out of the headstock. The input pulley is coaxial to the spindle, but does not run ON the spindle, Another, new today

Re: [Emc-users] cutting thin alu panels problems, was 6040 problems

On 01/29/2019 03:27 PM, Gene Heskett wrote: Greetings all; I just found the only way to cut this panel alu is to keep the tool cold with a blast of air at around 125 psi blowing on the nut and tool. Anything less and the heat telegraphing down the tool from the motors front bearing, combined

Re: [Emc-users] Nice manual lathe in WA (assume WA USA not WA AU)

On 01/28/2019 04:28 AM, andy pugh wrote: One oddity from Holbrook that I have not seen elsewhere (and isn't actually a feature of the H17 in the original advert) is a double dovetail on the cross slide. There is a part rather like a butterfly shape, fitting into a female dovetail in the

Re: [Emc-users] Nice manual lathe in WA (assume WA USA not WA AU)

On 01/28/2019 04:28 AM, andy pugh wrote: It is curious that the Sheldon R series is absent from lathes.co.uk, but then so is the Holbrook H series. They were not made in great numbers, although I have seen 2 others in shops. One was at Washtenaw Community College, where we had a few CNC

Re: [Emc-users] 1.5 kw vfd in 6040 problems

On 01/27/2019 03:28 PM, Gene Heskett wrote: So do I ground the direction desired, or feed it 10 volts? Which the vfd also has available although I've not measured it. UGH! Only the manual for the drive will tell you that, IF you can decipher it! I just use real, old-fashioned

Re: [Emc-users] 1.5 kw vfd in 6040 problems

On 01/27/2019 12:11 PM, Gene Heskett wrote: IMO the error check that throws that error is at fault, not my code. There is plenty of room to arrive at the proper place to do a climb cut around the inside of the hole. Well, I think there are two things that cause problems, if the hole is only a

Re: [Emc-users] Nice manual lathe in WA (assume WA USA not WA AU)

On 01/27/2019 09:48 AM, Mark Johnsen wrote: My 15" with six foot bed weighs 3500 Lbs. Good for stability. My previous lathe was a 12" Atlas-Craftsman. The difference in rigidity is just AMAZING! See http://pico-systems.com/sheldon.html for the whole saga of getting it moved in and fixed up.

Re: [Emc-users] 1.5 kw vfd in 6040 problems

On 01/26/2019 07:15 PM, Gene Heskett wrote: I've about give up on controlling this VFD with a pwmgen directly as I have no way to step the 5 volt pwm up to a 10 volt pwm. Can you program the VFD so 5 V input is the top speed you want? Jon ___

Re: [Emc-users] 1.5 kw vfd in 6040 problems

On 01/26/2019 07:15 PM, Gene Heskett wrote: Why can't I drill a .209" diameter hole with a 4mm (.157") tool? Well, I do this sort of thing all the time. Try downloading the first program on this page http://pico-systems.com/gcode.html or the next to last (make ring). These should compile on

Re: [Emc-users] Nice manual lathe in WA (assume WA USA not WA AU)

On 01/25/2019 11:39 PM, andy pugh wrote: https://www.gumtree.com.au/s-ad/picton/miscellaneous-goods/metal-working-lathe/1202880018?utm_source=Gmail_medium=social_campaign=socialbuttons_content=app_android Holbrook H20 / H17 at a guess. Absolutely top class lathe. Maybe the best, I would be

Re: [Emc-users] 1.5 kw vfd in 6040 problems

On Thursday 24 January 2019 08:41:47 Todd Zuercher wrote: I have a fair amount of experience with high speed spindles. And I've found that most are incapable of running much below about 1/3 of their rated speed for any length of time, and cutting anything at those speeds is certainly out of the

Re: [Emc-users] Fusion360 gcode= "Radius to end arc differs from radius start"

On 01/16/2019 01:42 AM, Gene Heskett wrote: On Tuesday 15 January 2019 22:42:11 Jon Elson wrote: I use a bunch of C programs I have written over the years to write G-code for specific operations (round holes, slots, etc.) and these all use R word arcs in quadrants. Tell me more about

Re: [Emc-users] Fusion360 gcode= "Radius to end arc differs from radius start"

On 01/15/2019 01:02 PM, John Figie wrote: I Also want to add that John Elson seems to be saying the opposite of the LinuxCNC gcode reference. Was that a mistake? Am I missing something? http://linuxcnc.org/docs/html/gcode/g-code.html#gcode:g2-g3 "It is not good practice to program radius

Re: [Emc-users] color me pissed

On 01/14/2019 09:31 PM, Chris Albertson wrote: The blu rays work but the backup internal is to long. It really needs to be done every hour. Hourly backup is best done with a hard drive. HOUR? Well, really, my Linux systems stay up a log time. I just rebooted my main desktop system after

Re: [Emc-users] g92 problems

On 01/14/2019 04:37 PM, Gene Heskett wrote: Greeting Andy; The docs for G92 are a bit hazy, I find that with no arguments, it still puts the machines 0,0 at where the machine is ATM, which is not what I needed. Is this intentional? Hmmm, that should NOT change any offsets, unless it is a

Re: [Emc-users] color me pissed

On 01/14/2019 12:16 PM, Chris Albertson wrote: Oe of the worst problem is #1. A files that you don't read very often gets corrupted. and then is propagated all over you backup media. This takes some thought to prevent. The ONLY way is versioned backup -- NEVER overwrite old data with new.

Re: [Emc-users] Fusion360 gcode= "Radius to end arc differs from radius start"

On 01/14/2019 10:53 AM, dan...@austin.rr.com wrote: Is adding a #TOLERANCE_INCH and #TOLERANCE_MM to the .ini file sufficient? What tolerances are reasonable? It depends on how many decimal places your CAM package supplies. If it supplies 4 digits (X1.2345) then probably .0002 should cover

Re: [Emc-users] color me pissed

On 01/14/2019 10:25 AM, Gene Heskett wrote: Mmm, that says you are running a stock router if any at all. I've not been bothered by hackers since I'm running dd-wrt on my router. Best thing I did was set up denyhosts, that watches for multiple ssh login fails from specific IP addresses, and

Re: [Emc-users] Fusion360 gcode= "Radius to end arc differs from radius start"

On 01/14/2019 12:18 AM, Danny Miller wrote: I'm managing a community shop with the CNC I designed and built. It's running on LinuxCNC 2.7.4 I was told people brought in some Fusion360-generated code that created an error "Radius to end arc differs from radius start". Nobody has provided me

Re: [Emc-users] OT: X-Y query

On 01/12/2019 03:43 AM, Roland Jollivet wrote: On Sat, 12 Jan 2019 at 07:40, Jon Elson wrote: On 01/11/2019 11:20 PM, Roland Jollivet wrote: I have an old KTF-30 King Tun Fu drill-mill that I use a lot. But on this machine, X0Y0 is at top right, as in rotating your graph paper 180deg

Re: [Emc-users] OT: X-Y query

On 01/11/2019 11:20 PM, Roland Jollivet wrote: I have an old KTF-30 King Tun Fu drill-mill that I use a lot. But on this machine, X0Y0 is at top right, as in rotating your graph paper 180deg on the table. Since machines and especially CNC machines don't care about orientation of axes, why

Re: [Emc-users] Looks Useful

On 01/11/2019 09:16 AM, andy pugh wrote: https://www.ebay.co.uk/itm/Nsk-Nippon-Seiko-High-Torque-Motor/323221054636?hash=item4b4179e4ac:g:J80AAOSw2q9a3OL2 (Collection only, though) Drive and programmer included. Hmm, that has an integral harmonic drive? Looks like it might. Jon

Re: [Emc-users] tool changer with swiveling arm

On 01/06/2019 11:29 PM, John Dammeyer wrote: Excuse my ignorance. The G Code selects a tool by #. The operator has placed the tools into the numbered positions for the tool changer. Now here I guess it gets interesting. Most efficient would be if the G-Code Parser read ahead and signaled

Re: [Emc-users] tool changer with swiveling arm

On 01/06/2019 10:54 AM, Kenneth Lerman wrote: To clarify the question: With this type of tool changer, one could speed up the tool change delay: 1. when loading a tool 1. unload the previous tool into one side of the arm 2. move the chain so that the new tool is ready to be

Re: [Emc-users] Linuxcnc Crashed?

On 12/28/2018 08:24 AM, Todd Zuercher wrote: Yesterday we were running our Linuxcnc Routers, and the machine operator came and got me to tell me that one of them had crashed. Linuxcnc had exited in the middle of a run with the router motors still running in the material. Very strange

Re: [Emc-users] Fiddling with home in gcode

On 12/24/2018 10:03 PM, Gene Heskett wrote: On Monday 24 December 2018 15:07:59 Jon Elson wrote: > The mill is supposed to be here around the 4th. But at 55+ kg, how is one man going to unload it? It might come in several boxes. I just got another msg from the vendor confirming th

Re: [Emc-users] Fiddling with home in gcode

> The mill is supposed to be here around the 4th. But at 55+ kg, how is one man going to unload it? It might come in several boxes. ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Fiddling with home in gcode

On 12/23/2018 03:33 PM, Gene Heskett wrote: The way I'm reading it Jon,starting at page184 in ht mater dov pll ; and the max estimated correction being less than 50 thou, g92 corrects all maps, where as the G1 L2 P# only effects a single map at a time. Am I mistaken? This is master, not a

Re: [Emc-users] sim still broken

On 12/23/2018 03:16 PM, Gene Heskett wrote: On Sunday 23 December 2018 16:00:01 Jon Elson wrote: On 12/23/2018 01:26 PM, Gene Heskett wrote: I sort of like that, 23 ft of head would let me put the tank below the machine, but it appears the motor may not be cooled by the coolant, does

Re: [Emc-users] Fiddling with home in gcode

On 12/23/2018 01:41 PM, Marcus Bowman wrote: G92.1 cancels all G92 offsets, so that always goes in the initialisation block in all my programs. If I am cutting rows of holes, with simple or complex outlines, I always go the the hole position, then use a subroutine to cut the hole. The

Re: [Emc-users] sim still broken

On 12/23/2018 01:26 PM, Gene Heskett wrote: I sort of like that, 23 ft of head would let me put the tank below the machine, but it appears the motor may not be cooled by the coolant, does that have any effect on its life? And its 9" tall. But that would let me mount it below the machine and

Re: [Emc-users] sim still broken

On 12/23/2018 08:10 AM, Bruce Layne wrote: You don't need a big pump regardless of the size of the spindle motor. I use a small Little Giant pump that's often sold for fountains, hydroponics, etc. I get the best version they make and it's still inexpensive. Good brands include Superior

Re: [Emc-users] sim still broken

On 12/22/2018 06:17 PM, Gene Heskett wrote: Not ack the description Jon, regular ball bearing sliders on chrome plated rods. Yes, clearly visible on X and Z, but I could NOT see the Y (along the gantry rail) mechanism. And I just got the confirmation on the collets 14$ and change for 15 so

Re: [Emc-users] sim still broken

On 12/22/2018 05:47 PM, Gene Heskett wrote: The only thing I could not find with any search terms was a 1/2 to 1 gallon water tank to bury the water pump in. There are things called "condensate drain pumps" that you put near a furnace/AC evaporator to get rid of the water when a floor drain is

Re: [Emc-users] sim still broken

On 12/22/2018 04:18 PM, Kenneth Lerman wrote: I suspect that it will be very lacking in rigidity. Yes, I think you might be right. 55 Kg machine weight. The round rails ARE fully-supported, but the slider bearings are pretty short. Looks like a decent spindle. But, it sure is no

Re: [Emc-users] need advise setting up new machine

On 12/20/2018 09:42 AM, Ed wrote: I am looking to interface to a machine that has 4 AMD BE25A20G analog input amplifiers, spindle encoder, 4 bit encoders for spindle over ride and feed over ride, an MPG with selector switches, a vfd, and homes and limits for 3 axis. I am looking for

Re: [Emc-users] Done with that panel code, with one exception

On 12/19/2018 06:07 AM, andy pugh wrote: On Tue, 18 Dec 2018 at 22:50, Gene Heskett wrote: I've made several passes at learning one pkg or another, but after half an hour without making any real progress, I'm back to measuring and defining points and writing gcode by hand. Well, my solution

Re: [Emc-users] lost in the transcendental math again

On 12/17/2018 04:19 PM, Gene Heskett wrote: I have one last problem, I can't get a G42 to "take" despite the fact that the next move is 2x+ the tool diameter. Am I crazy or is this a bug? Do I need to waste some stock to find out? You need to make a spring-loaded ballpoint pen holder and a

Re: [Emc-users] Spindle Encoder AEDR-8300 Encoder Ring

On 11/28/2018 11:52 PM, David Berndt wrote: Alright, Dragging this back up. A knockoff Omron encoder showed up in the mail, well I assume It's a knockoff at this price. Mounted it, wired it up. But it's on the back of the mill and geared 68/55 to the actual spindle output. This sounds like

Re: [Emc-users] UPS on controller

On 11/20/2018 09:06 AM, Thaddeus Waldner wrote: I’m in the process of converting a small medium-duty table router to work with a LinuxCNC controller. I am duly impressed that such a wealth of technical information and such a powerful and robust industrial automation tool should be available

Re: [Emc-users] Surface grinder vertical axis servo motor and controller recommendation

On 11/19/2018 10:20 PM, Jon Elson wrote: On 11/19/2018 09:38 PM, Tom Easterday wrote: A friend is fixing up a 70s vintage surface grinder that has a ball screw on the vertical axis and a non functioning drive. He wants to replace what is there with a servo motor and driver and have a simple

Re: [Emc-users] question on progress of addf survey tool.

On 11/19/2018 04:38 AM, Gene Heskett wrote: On Monday 19 November 2018 05:06:29 Nicklas SB Karlsson wrote: What did you want to discuss with the addf function? I used it and think it works but what's more? We need a utility that detects out of order addf's, each of which then causes a

Re: [Emc-users] Spindle Encoder AEDR-8300 Encoder Ring

On 11/01/2018 03:09 AM, Chris Albertson wrote: You don't want to block the hole in the spindle so you are looking for an encoder with a large hole though it?Is that right? If the spindle is belt or gear driven you could place the sensor on the gear or pulley that drives the spindle. You

Re: [Emc-users] need something like rockhopper, but faster

On 10/25/2018 05:59 PM, andy pugh wrote: On Thu, 25 Oct 2018 at 20:48, Kenneth Lerman wrote: At any rate, Gene brings up a real problem should be solvable with a simple tool. One fly in the ointment is that I don't think anything knows which function reads inputs and which writes outputs for

Re: [Emc-users] Feed/Rapid override physical knob selection

On 10/25/2018 09:53 AM, Przemek Klosowski wrote: On Wed, Oct 24, 2018 at 4:00 PM andy pugh wrote: I assume this one is waterproof when installed, but not inherently: https://www.ebay.co.uk/itm/253300957997 MPJA still has a $20 handwheel, nicely done:

Re: [Emc-users] need something like rockhopper, but faster

On 10/22/2018 03:17 PM, andy pugh wrote: On Mon, 22 Oct 2018 at 20:31, Nicklas Karlsson wrote: It depends on hardware but to simultaneously sample inputs and actuate outputs is a good method. Then computations could happen anywhere within period and it also agree with theories for real time

Re: [Emc-users] Have You Seen This Absolute Position Sensor?

On 10/06/2018 08:31 AM, Kenneth Lerman wrote: Kenneth Lerman Thu, Oct 4, 7:54 PM (2 days ago) to Emc-users ...for less than three dollars... I don't know what I might use it for, but it seems pretty neat. Hmmm, very interesting

Re: [Emc-users] Yet another topic about gantry homing

On 10/05/2018 11:17 PM, Roland Jollivet wrote: Of course you can remove the nut. You just roll it onto a correctly sized former. In fact it's a good idea to do this with the linear slides and ballscrews from china, to give them a wash. While they are greased up and wrapped in plastic, they are

Re: [Emc-users] Test of AC servo motors

On 10/04/2018 12:31 PM, Bengt Sjölund wrote: Hi Jon, Can not find any information but I assume they are PM. These are Mavilor BL series with resolvers ( BLS ) To test, short the motor wires together. If the shaft is very hard to turn, it is PM. If the shaft is just as easy to turn as

Re: [Emc-users] Test of AC servo motors

On 10/04/2018 07:30 AM, Bengt Sjölund wrote: Hi folks, I have several AC servo motors but no drivers, I would like to test these to verify that they all work and are OK. Can I use a VFD to do the testing or will I damage eiher motors or VFD? All motors are 3-phase 220VAC and VFD is a

Re: [Emc-users] OT: motor usage

On 10/03/2018 11:29 AM, Roland Jollivet wrote: It's a 3-phase PM motor, no commutator. So does the KV constant method still apply? Maybe load it with a few hundred ohms to damp it a bit? OHH! That is a bit different, and of course you have to use the AC scale of the meter, but yes, KV

Re: [Emc-users] OT: motor usage

On 10/03/2018 10:45 AM, John Figie wrote: Baldor will not reply. Rockwell bought Reliance in the 90s. The electrocraft products became Rockwell Automation Products (Allen Bradley) Later Rockwell sold Reliance to Baldor but kept the Electrocraft stuff. Well, the first thing to do is put the

Re: [Emc-users] using Screw Comp file are values interpolated question

On 10/02/2018 06:24 PM, robert - Innovative-RC wrote: Does any one know if the points inbetween nominal values are interpolated or not in a screw comp table? ie if i have 10mm nominal and 20mm nominal with correction values. would say 15mm travel become an interpolated value for screw comp?

Re: [Emc-users] More on bed wear fix

On 09/25/2018 03:02 AM, andy pugh wrote: I can't help thinking that the way to determine the amount of correction needed is to actually machine a test bar and measure it. The problem here is that deflection of the bar, and also the lathe, will affect the accuracy of the result. You can't turn

Re: [Emc-users] Parallel Port

On 08/29/2018 11:44 AM, Todd Zuercher wrote: I have not yet found any other 2 port PCIe cards that use a different chip. Ah, for PCIe, I use the Syba SD-PEX10005 which uses the MOSCHIP MCS9900 (or sometimes the MCS9901) chip. This is only a single parallel port, but it seems to work fine.

Re: [Emc-users] Parallel Port

On 08/29/2018 09:02 AM, Todd Zuercher wrote: An update, I tested the parallel port card in Windows and it seems to work there with the supplied drivers. The control pins will output 3v and I can toggle them on/off. So that means it must simply be a compatibility problem with this card and

Re: [Emc-users] Parallel Port

On 08/27/2018 12:38 PM, Todd Zuercher wrote: I have a duel port PCIe parallel port card that I am trying to use in an application, but I'm having a little trouble. My problem is that I can't seem to use the pins in the control groupe (1,14,16,17) as outputs in the normal "out" or "in"

Re: [Emc-users] stepper driver

On 08/25/2018 06:54 AM, gru...@manlymail.net wrote: has anyone tried this https://www.sparkfun.com/products/13752 Seems awfully expensive, as many of the Pololu-style drivers can be had for under $2. Jon -- Check

Re: [Emc-users] update version on working machine

On 08/23/2018 08:53 AM, andy pugh wrote: But it is likely that the update manager is suggesting updating from 2.5.4 to 2.5.5 and that should certainly be safe. I would just NOT bother with such a minor update. 2.5.4 is really quite old. Yes, and 2.5.5 is also plenty old. The biggie is to

Re: [Emc-users] update version on working machine

On 08/23/2018 08:41 AM, Ed wrote: I have a lathe that is running 2.5.4 and runs well. I get offers from Update Manager to do an update. Can this be any danger to operation or to any of the ini or hal files or operation? My paranoid gene tells me to ask. Your paranoia is GOOD! I would

Re: [Emc-users] Success story and a question

On 08/13/2018 09:39 AM, Chris Radek wrote: So I encourage you going to LinuxCNC with an open mind and not trying to implement everything your old control had, whether it makes sense or not. Yes, I agree. The way the 3D preview and bounds checking is implemented in Axis, you get a lot of

Re: [Emc-users] Bldc commutatation

On 08/11/2018 08:03 PM, Gene Heskett wrote: On Saturday 11 August 2018 20:14:46 Jon Elson wrote: On 08/11/2018 03:37 PM, Gene Heskett wrote: On Saturday 11 August 2018 15:29:43 andy pugh wrote: On 11 August 2018 at 20:11, Gene Heskett wrote: Where can I find a tut on how the resolver

Re: [Emc-users] Bldc commutatation

On 08/11/2018 03:37 PM, Gene Heskett wrote: On Saturday 11 August 2018 15:29:43 andy pugh wrote: On 11 August 2018 at 20:11, Gene Heskett wrote: Where can I find a tut on how the resolver works? https://en.wikipedia.org/wiki/Resolver_(electrical) Quite simplified, covers the basics but

Re: [Emc-users] Bldc commutatation

On 08/11/2018 02:29 PM, andy pugh wrote: On 11 August 2018 at 20:11, Gene Heskett wrote: Where can I find a tut on how the resolver works? https://en.wikipedia.org/wiki/Resolver_(electrical) Also, you can look at the Analog Devices 2S1200 chip, which is one classical way to get info from

Re: [Emc-users] Success story and a question

On 08/07/2018 09:17 PM, Brent Loschen wrote: And now for my question. The old Bridgeport had a button on the front panel titled "No Z" that turned off all z motion and let me "air mill" a part as a sanity check of my X & Y boundaries/fixtures. I can't find the equivalent functionality

Re: [Emc-users] Possibly useful keyboards

On 08/01/2018 01:04 PM, Gene Heskett wrote: On Wednesday 01 August 2018 11:51:31 Jon Elson wrote: or LED retrofit. Jon Where can such a critter be sourced? And how much? (approximately) I've heard rumors that there are kits for certain LCDs that replace the whole backlight system

Re: [Emc-users] Possibly useful keyboards

On 07/31/2018 08:46 PM, Gene Heskett wrote: most were much lower resolution than the 23" Samsung digital tv with a blown tuner I'm using now. Its main prob is I need to open it up and replace some electrolytics in the lamp psu, its a ccfl backlight and takes several minutes to get to full,

Re: [Emc-users] CAD for LinuxCNC

On 07/24/2018 01:08 PM, Valerio Bellizzomi wrote: On Tue, 2018-07-24 at 11:14 -0500, Jon Elson wrote: On 07/24/2018 07:37 AM, Valerio Bellizzomi wrote: I use FreeCAD and Blender for the modeling and PyCAM to convert to gcode all on Debian I'd like to hear more about this. I tried the VERY

Re: [Emc-users] CAD for LinuxCNC, Autodesk

On 07/24/2018 11:39 AM, Nicklas Karlsson wrote: On Tue, 24 Jul 2018 11:14:50 -0500 Jon Elson wrote: On 07/24/2018 07:37 AM, Valerio Bellizzomi wrote: I use FreeCAD and Blender for the modeling and PyCAM to convert to gcode all on Debian I'd like to hear more about this. I tried the VERY

Re: [Emc-users] CAD for LinuxCNC

On 07/24/2018 07:37 AM, Valerio Bellizzomi wrote: I use FreeCAD and Blender for the modeling and PyCAM to convert to gcode all on Debian I'd like to hear more about this. I tried the VERY latest FreeCAD a couple months ago and it seemed to have some problems. So, we then went with Inventor

Re: [Emc-users] Grounding

On 07/14/2018 02:37 AM, Gene Heskett wrote: Not exactly 100% correct John. High frequencies are generally carried only by current flow at the skin of a conductor. And the large conductor, while having some rise in impedance, is still the better conductor because the smaller wire has far less

Re: [Emc-users] Grounding

On 07/12/2018 02:12 PM, John Dammeyer wrote: Is it standard practice to connect the DC Servo and DC Instrumentation Bus to the machine frame ground which is connected to power line earth? Or is it more normal practice to keep the DC isolated from the 'earth' ground. The "DC Link" in a

Re: [Emc-users] Raspberry Pi PREEMPT-RT --> Scheduling and message passing in general

On 06/25/2018 04:32 AM, TJoseph Powderly wrote: re "The programming software has a mode where yu can call up a library of old 74LSxxx parts and drop them on a canvas and draw lies between pins " You talkin bout Cypress's PSoC Creator, Willis? ;-) It doesnt sound like Xilinx or Altera's tools.

Re: [Emc-users] Raspberry Pi PREEMPT-RT --> Scheduling and message passing in general

On 06/24/2018 10:39 PM, Charles Steinkuehler wrote: On 6/24/2018 10:24 PM, Jon Elson wrote: I've stopped using the schematic entry stuff and learned VHDL. But, these things are amazingly powerful, fast, and not too-hard to program. Ah...I miss the old days of manually programming fuse maps

Re: [Emc-users] Raspberry Pi PREEMPT-RT --> Scheduling and message passing in general

On 06/24/2018 09:43 PM, Chris Albertson wrote: Maybe we've gone full circle. I just bought an $11 part on eBay. I it is a CPLD. Like an FPGA but smaller and much less expensive and easier to use. The programming software has a mode where yu can call up a library of old 74LSxxx parts and

Re: [Emc-users] Raspberry Pi PREEMPT-RT

On 06/23/2018 06:52 PM, John Dammeyer wrote: Hi Jon, So you are confirming that standard Linux like Ubuntu for a PC, the Raspian for the Pi or the Debian for the Beagle is just a multi-user OS and also not real time. Yes, the standard OS is not real time. If the OS has a RT option applied to

Re: [Emc-users] Raspberry Pi PREEMPT-RT

On 06/23/2018 12:03 PM, John Dammeyer wrote: Clearly desktop Linux has some sort of RTOS (compared to single user CP/M-80, CP/M-86, MSDOS, WIN-386) since it allows multiple users to sign in. That is not Real-Time, just a multi-user OS. No guarantees of execution or latency. Jon

Re: [Emc-users] Raspberry Pi PREEMPT-RT

On 06/23/2018 04:39 AM, andy pugh wrote: I am baffled by this discussion. LinuxCNC relies on a real-time kernel in one of three flavours. RTAI, Xenomai or PREEMPT-RT. LinuxCNC supplies either RTAI or PREMPT-RT as part of the Live-CD images for x86 and amd-64 platforms but does not supply such

Re: [Emc-users] Raspberry Pi PREEMPT-RT

On 06/22/2018 11:10 AM, Peter C. Wallace wrote: Linux has had real time kernels for more than 10 years rt-linux was used by the original EMC (1) in about 1996 to port the original EMC over from Sun hardware. So, it has been about 22 years! Amazing! I got my first EMC system running in

Re: [Emc-users] Fwd: shipping

On 06/21/2018 06:51 PM, andy pugh wrote: -- Forwarded message -- From: dave engvall Date: 22 June 2018 at 00:19 Subject: shipping To: andy pugh Hi Andy, I'm trying to post on emc-users and getting rejected claiming the my isp is a source of spam. Yes, I've had this problem,

Re: [Emc-users] Got LCNC into a corner, painted in you might say

On 05/28/2018 08:12 PM, Gene Heskett wrote: On Monday 28 May 2018 15:12:46 Jon Elson wrote: more /proc/meminfo gene@GO704:~$ sudo cat /proc/meminfo [sudo] password for gene: MemTotal:2059220 kB MemFree: 1424600 kB Buffers: 44556 kB Cached: 372816 kB

Re: [Emc-users] AC Power for Mill and PC+Monitor

On 05/28/2018 03:42 PM, John Dammeyer wrote: What are others in North America doing for powering their PCs and Monitors? Separate AC outlet/power bar for the PC? I have very wimpy servo motors on my Bridgeport. So, the whole thing except the spindle VFD runs off 120 V. The computer,

Re: [Emc-users] Got LCNC into a corner, painted in you might say

On 05/28/2018 03:47 AM, Gene Heskett wrote: On Sunday 27 May 2018 23:54:57 Gene Heskett wrote: I forgot to mention that while all that was being worked out, I had to re-boot again as it had become completely unresponsive. And still not a clue in the syslog. After starting LinuxCNC up, but

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