Re: [Emc-users] Reverse Pulse Control on Dust Collectors

I think that would be an excellent use for an Arduino. N. Christopher Perry > On Aug 22, 2023, at 1:01 PM, John Dammeyer wrote: > > I tried to send some python source code, an xml and text file as > attachments, both as the files and in a zip and got the attachment > bl

Re: [Emc-users] R2E3 retrofit

That’s great to hear Gene. I’ve daughter thats on the spectrum, which constantly worries me. You’re son’s story strengthens my hope for her. N. Christopher Perry > On Jul 2, 2022, at 8:32 AM, gene heskett wrote: > > On 7/1/22 23:53, Stuart Stevenson wrote: >> Before -

Re: [Emc-users] Something went wrong.

I’d try the operations in the opposite order and see what happens…. I’ve seen more subtle things like this before and chocked it up to part flex, but what you’ve got there is too extreme to believe it could be simply flex. N. Christopher Perry > On Aug 2, 2021, at 1:10 PM, John Damme

Re: [Emc-users] Die guide post insertion/removal force

/StraightGuidePosts N. Christopher Perry > On Mar 24, 2021, at 3:26 PM, andy pugh wrote: > > On Wed, 24 Mar 2021 at 19:10, Nicklas SB Karlsson wrote: > >> for sheet metal bending tool but should work for the few parts I expect >> to need. ... bending tool will be used

Re: [Emc-users] Die guide post insertion/removal force

I recently replaced the 1” diameter posts in a die set with a Harbor Freight 20 ton press. I used most of its grunt, but it worked fine! N. Christopher Perry > On Mar 24, 2021, at 6:31 AM, andy pugh wrote: > > On Wed, 24 Mar 2021 at 05:13, Nicklas SB Karlsson wrote: >>

Re: [Emc-users] OT: pcb milling

I use this tape and live it: Polyken 108/NAT225 108 When you’re done machining it with alcohol and it lets go. N. Christopher Perry > On Mar 2, 2021, at 3:44 PM, Greg Bernard wrote: > > Looks interesting. I've used double sided tape to hold circuit boards and > sheet aluminum

Re: [Emc-users] LinuxCNC 2.8.0 is released

You guys are awesome! Thank you all! N. Christopher Perry > On Sep 8, 2020, at 9:34 PM, Gene Heskett wrote: > >> On Tuesday 08 September 2020 19:28:13 andy pugh wrote: >> >> I am pleased (and a little relieved) to announce the release of >> LinuxCNC v2.8.0 >&

Re: [Emc-users] missing feature of openscad

It’s common practice to have a fan on the ‘cold end’ of the print head to keep the heater and motor from prematurely softening the filament. N. Christopher Perry > On May 31, 2020, at 1:29 PM, Chris Albertson > wrote: > > Use a metal hub on the gear, especially if it conne

Re: [Emc-users] Timing belts?

The GT3 is a great profile to use. N. Christopher Perry > On May 11, 2020, at 2:07 PM, Chris Albertson > wrote: > > I'm doing a new design CNC build. I will be using timing belts and > medium-size (NEMA 23 and 34) stepper motors. > > Question: What tooth profi

Re: [Emc-users] Spindle Speed Control.

ts 0-10V, so I created a little board that converts the PWN to a 0-10V analog signal and isolates all the signals. N. Christopher Perry >>> >>> ModBus? >>> If ModBus RS232 or RS485? >>> >>> Some other way? >>> >>> Thanks >>&g

Re: [Emc-users] Dropbox

> > > On Sat, Mar 9, 2019 at 11:40 AM N. Christopher Perry > wrote: >> >> >>> On Mar 9, 2019, at 2:16 PM, Chris Albertson >>> wrote: >>> >>> Use the web interface to DropBox. Then no software needs to be installed >> >&

Re: [Emc-users] Dropbox

> very reliable and 100X faster. > > > On Sat, Mar 9, 2019 at 10:50 AM N. Christopher Perry > wrote: > >> I finally upgraded to 2.7 / Debian Wheezy and am trying to get Dropbox to >> work on it. When I install any of the packages from the Dropbox sight I >&

[Emc-users] Dropbox

I finally upgraded to 2.7 / Debian Wheezy and am trying to get Dropbox to work on it. When I install any of the packages from the Dropbox sight I ether get dependency problems or after starting it the task crashes. Anybody got suggestions? N. Christopher Perry

Re: [Emc-users] Just in case anyone is interested in my tool changer...

Very neat! N. Christopher Perry > On Aug 28, 2018, at 2:06 AM, Marcus Bowman > wrote: > > >> On 27 Aug 2018, at 21:44, Les Newell wrote: >> >> I uploaded a quick video of it in action <https://youtu.be/XI90PuKW6Mw> >> > Nice action, and

Re: [Emc-users] How does this work?

> On May 20, 2018, at 7:44 AM, Ed wrote: > >> On 05/19/2018 08:58 PM, Dan Bloomquist wrote: >> >> My son is looking at CNC mills. I cam across this one, and no, I don't think >> it suitable for him. He will really need a Haas class machine. >> >> But I'm looking at the photos

Re: [Emc-users] Getting a burned up polygroove belt out of a motor pulley. Need chemist expert

> On Mar 21, 2018, at 9:13 PM, Gene Heskett <ghesk...@shentel.net> wrote: > >> On Wednesday 21 March 2018 19:03:28 N. Christopher Perry wrote: >> >> I’d pull the pulley off and through it into an over set to 450F for a >> couple of hours. >> >>

Re: [Emc-users] Getting a burned up polygroove belt out of a motor pulley. Need chemist expert

I’d pull the pulley off and through it into an over set to 450F for a couple of hours. N. Christopher Perry > On Mar 21, 2018, at 6:45 PM, Gene Heskett <ghesk...@shentel.net> wrote: > > Greetings all; > > I have a Rikon 10-325 bandsaw. Trying to cut a block of alu with

Re: [Emc-users] Need to select a timing belt type and size

pitch allows the motor to > spin up to 5,000 RPM. I doubt I will run the stepper motor that fast > >> N. Christopher Perry -- Check out the vibrant tech community on

Re: [Emc-users] Need to select a timing belt type and size

> On Feb 18, 2018, at 6:53 PM, Chris Albertson > wrote: > > Question: What would be the preferred timing belt for a new design? > > Here is the application. I'm making a z-axis control for a Harbor Freight > mini mill (Sieg X2). In this design a 5/8 diameter,

Re: [Emc-users] Tech Shop goes out of business

they didn't sell things. They are/were a shop space where people >> would >> pay a membership fee for access to space, tools, etc. Makerspace kind of >> thing. >> > http://www.techshop.ws/techshop.pdf > > -- > John Kasunich > jmkasun...@fastmail.fm >

Re: [Emc-users] MachineKit on the BeagleBone Black

tage industry of people who will supply that > same because they can make money doing so. > > > I would be quite happy to pay for for an application like path pilot that > will run on any machine, but would anyone else? > I certainly would, as long as it didn't run into the many

Re: [Emc-users] CNC Plasma Tube Notcher

utu.be/uZP3JNNKDLQ > > Following a scanned template: > https://youtu.be/DsCuw9TPBeY > > Scanning a template: > https://youtu.be/QfmZeYXlU6E > > Chuck self centering small diameter: > https://youtu.be/5S8kO3-p

Re: [Emc-users] new thread inspired by Christophers question about 3d printer sliceing SW.

That is is impressive! N. Christopher Perry > On May 27, 2017, at 9:54 PM, andy pugh <bodge...@gmail.com> wrote: > >> On 16 May 2017 at 14:27, Gene Heskett <ghesk...@shentel.net> wrote: >> Has anyone put a printhead on a std moving table milling machine, and >

Re: [Emc-users] new thread inspired by Christophers question about 3d printer sliceing SW.

To answer Ken's question... N. Christopher Perry > On May 16, 2017, at 2:00 PM, Gene Heskett <ghesk...@shentel.net> wrote: > > On Tuesday 16 May 2017 11:56:40 Ken Strauss wrote: > >>> -Original Message----- >>> From: N. Christopher Perry [mailto:vwpe...

Re: [Emc-users] Best cam linux/open for additive manufactory

This one gets very good reviews: https://craftunique.com/craftware N. Christopher Perry > On May 16, 2017, at 7:42 AM, giorgio foga <giorgiof...@hotmail.it> wrote: > > Hi, > > > anyone can suggest me a good cam for additive manufactoring .. (fdm) ... free >

Re: [Emc-users] Milling Aluminum.

And I recommend 0.025" - 0.050" depth of cut. N. Christopher Perry > On Feb 21, 2017, at 11:53 AM, John Thornton <j...@gnipsel.com> wrote: > > The key to milling aluminum dry is cutting a chip big enough to pull the > heat out with the chip. So big chips mean th

Re: [Emc-users] Probably stupid question.

I default to cobalt drills for most jobs. They are more expensive, but I've never actually dulled one on anything less than a nasty SS. N. Christopher Perry > On Aug 12, 2016, at 6:59 PM, Dave Cole <linuxcncro...@gmail.com> wrote: > > One propane torch (a good one) in a wind

Re: [Emc-users] ER-16 spindles

No problem! I'm a little miffed that they came up with that mere months after I bought lathe. Obviously I'll have to pick up one for myself too ;)) N. Christopher Perry > On Jun 29, 2016, at 1:55 PM, Ralph Stirling <ralph.stirl...@wallawalla.edu> > wrote: > > Thank

Re: [Emc-users] ER-16 spindles

Taig makes a ER-16 compatible headstock. N. Christopher Perry > On Jun 29, 2016, at 11:29 AM, Peter Blodow <p.blo...@dreki.de> wrote: > > Being in possession of a lathe, I bought a set of cheap collets, a > special nut and a six-prong wrench to go with them and made my

Re: [Emc-users] off topic free mechanical movement software simulation

move to Solid works, FreeCAD or Solvespace to work out the component geometry. N. Christopher Perry > On Oct 24, 2015, at 9:19 AM, linden <l...@island.net> wrote: > > Hi All > I have been playing with the idea of building a hexapod or > Stuart platform mill with lin

Re: [Emc-users] CNC mill + plasma cutter = CNC plasma cutter.

I wouldn't call that shade tree mechanics: I'd call it Yankee ingenuity! N. Christopher Perry > On Sep 19, 2015, at 8:35 AM, Gene Heskett <ghesk...@wdtv.com> wrote: > >> On Saturday 19 September 2015 05:15:53 Gregg Eshelman wrote: >> >> Matus1976 is building a mo

Re: [Emc-users] Learning LinuxCNC Youtube Channel

Very impressive! N. Christopher Perry > On Sep 18, 2015, at 12:32 PM, Jon Elson <el...@pico-systems.com> wrote: > >> On 09/18/2015 08:26 AM, andy pugh wrote: >> On 18 September 2015 at 14:23, Erik Christiansen >> <dva...@internode.on.net> wrote: >>

Re: [Emc-users] LinuxCNC controlling inudction heater

That is a thing of beauty. N. Christopher Perry On Aug 26, 2015, at 12:17 AM, Leonardo Marsaglia leonardomarsagli...@gmail.com wrote: Hello to all! I don't recall showing to the list how the machine works with an actual part on it so here it is: A short video showing how it heats

Re: [Emc-users] Resetting a tilt-able head to plumb?

What are you going to use to run the indicator up and down the rod? If it is a reasonably well made height gage you should be fine. N. Christopher Perry On Aug 18, 2015, at 8:32 AM, Gene Heskett ghesk...@wdtv.com wrote: Greetings all; I am getting an artifact in my carving

Re: [Emc-users] Inverted Tooth Chain Drives

the HTD profiles. The benefits of chain are diminishing with time, and at this point cost is the only advantage to people like us doing one offs. N. Christopher Perry On Aug 10, 2015, at 9:46 AM, Peter Blodow p.blo...@dreki.de wrote: Ma first car, built in 1956, was a Fiat NSU 600, 600 cm³, 19

Re: [Emc-users] Inverted Tooth Chain Drives

application. The Polychain shouldn't have this problem, as the manufacturing process is completely different. The cords are completely embedded within the polyurethane body of the belt and the sizing agents are supposedly not as sensitive to moisture. N. Christopher Perry On Aug 10, 2015

Re: [Emc-users] Inverted Tooth Chain Drives

I don't know of any off hand, but they are used in a lot of dirty greasy environments. N. Christopher Perry On Aug 10, 2015, at 3:23 PM, Dave Cole linuxcncro...@gmail.com wrote: On 8/10/2015 2:12 PM, andy pugh wrote: On 10 August 2015 at 18:46, Dave Cole linuxcncro...@gmail.com wrote

Re: [Emc-users] Have major problem. ball screws out of nut for starters.

Got a collet block? Clamping the screw with a collet, and maybe a piece of 800 grit emory paper, is the first thing that comes to mind. N. Christopher Perry On Jun 26, 2015, at 5:39 PM, Gene Heskett ghesk...@wdtv.com wrote: Greetings all; I've had a heck of a time putting the Z screw

Re: [Emc-users] minimum spindle speed

Look to see if the VFD has a minimum speed command setting. N. Christopher Perry On Jun 22, 2015, at 1:48 PM, Tom Easterday tom-...@bgp.nu wrote: I am controlling a spindle motor with a VFD commanded by modbus. My current speed range is 0-3500 rpm. If I run the spindle below 275 rpm

Re: [Emc-users] Powerhawk VTC-150 Mill Conversion Nearing Completion

Nice job! N. Christopher Perry On Jun 15, 2015, at 9:45 AM, Chris Kelley tensait...@gmail.com wrote: Well, we had to make a little circuit board to convert the Fanuc spindle analog pulse generator signals to digital quadrature pulses and I mounted an optical sensor to read a flag

Re: [Emc-users] micro-v belts, smaller

Ouch! They've been reasonable for the stuff I've been looking for recently, so I thought they might be worth a look. That quote would have given me sticker shock too. N. Christopher Perry On Apr 30, 2015, at 8:13 PM, Gene Heskett ghesk...@wdtv.com wrote: On Thursday 30 April 2015 18:19

Re: [Emc-users] micro-v belts, smaller

Have you tried SDP?: SDP-SI.com N. Christopher Perry On Apr 30, 2015, at 2:16 PM, Gene Heskett ghesk...@wdtv.com wrote: Greetings all; I have been snooping around with my google-fu, and coming up a bit long. Long as in the smallest of tese belts with a kevlar backing, is a 3/8 wide

Re: [Emc-users] Mesa cards visual documentation

Along the same lines, does anyone have any thoughts on what a style guide would include for HAL files? N. Christopher Perry On Apr 20, 2015, at 4:49 PM, Karlsson Wang nicklas.karls...@karlssonwang.se wrote: rockhopper geda eagle may be incomplete from some view but the idea is not! I

Re: [Emc-users] Missing/incorrect steps

You might want to twist those pairs a little tighter. I try to have at least 4 turns per inch. N. Christopher Perry On Mar 8, 2015, at 6:45 PM, Neil emc_d...@narwani.org wrote: This is how it's wired... http://orlandorobotbuilders.com/rw/2015-03-08-Elec-01-Wiring.jpg The white/green

Re: [Emc-users] VFD causing limits to trip. Huh?

. If there aren't any, then you should consider rearranging you wiring. N. Christopher Perry On Mar 6, 2015, at 3:14 PM, Charles Steinkuehler char...@steinkuehler.net wrote: On 3/6/2015 1:43 PM, Todd Zuercher wrote: What sort of screen? and where is it in relation to the VFD? We have

Re: [Emc-users] VFD causing limits to trip. Huh?

You could also put a reactor between the motor and drive. Might be a good idea to put a line filter on the power leads to the drive too. I'm not a fan of shielding, but it's certainly an option as well. N. Christopher Perry On Mar 6, 2015, at 7:36 AM, Stephen Dubovsky smdubov...@gmail.com

Re: [Emc-users] VFD causing limits to trip. Huh?

That's the big brother of the one I picked. N. Christopher Perry On Mar 6, 2015, at 12:34 PM, Dave Cole linuxcncro...@gmail.com wrote: VFDs and AC servo drives oftentimes create noise on the incoming AC power lines to the drives.That noise can cause interference issues with system

Re: [Emc-users] BBB variable voltage output for spindle speed

control/feedback signals for spindle enable and a 'at speed' indication. Here are the Eagle files for it if you'd like to crib them: https://www.dropbox.com/sh/solnou6bjixmmp7/3b3ChzN0Wk I've even got a few bare PCBs and a couple of populated ones if you'd like to buy one. N. Christopher

Re: [Emc-users] polyurethane resin casting

N. Christopher On Sep 27, 2013, at 11:27, Erik Friesen e...@aercon.net wrote: Has anyone here done much polyurethane resin pouring? I have been trying to fine tune the process. Current process uses silicon moulds. #1. Does it work to use aluminum moulds? It does. #2. Could it work

Re: [Emc-users] Displaying a variable in the Axis Custom Panel

Try using 'DEBUG'. I have the same problem with 'PRINT'. N. Christopher Perry On Sep 13, 2013, at 0:18, Cecil Thomas wctho...@chartertn.net wrote: I have completed the CNC conversion of my Monarch 10EE except for the spindle speed control. For now I must set the spindle speed manually

Re: [Emc-users] 3D Models from photos

On Sep 12, 2013, at 10:37, Kirk Wallace kwall...@wallacecompany.com wrote: On 09/12/2013 06:49 AM, Viesturs Lācis wrote: 2013/9/12 Kirk Wallace kwall...@wallacecompany.com On 09/12/2013 06:25 AM, andy pugh wrote: http://youtu.be/sGNesS8vo4M I am pretty impressed This will give the

Re: [Emc-users] hm2 - pwmgen vs 3pwmgen for BLDCs

N. Christopher Perry On Jul 15, 2013, at 14:13, propcoder marius.alks...@gmail.com wrote: I am thinking of my misfortune with IRAM IGBT module and BLDC motors. As I wrote earlier - the motion and torque was not smooth. Do you really need IGBTs? Are your voltages/currents high enough

Re: [Emc-users] hm2 - pwmgen vs 3pwmgen for BLDCs

N. Christopher Perry On Jul 15, 2013, at 15:06, propcoder marius.alks...@gmail.com wrote: 2013.07.15 21:56, N. Christopher Perry rašė: You should be able to do that. It does make shot-through a little easier to manage. Also, there are 3-phase gate drive controllers that will manage

Re: [Emc-users] 5V PWM to +-10V analog converter circuit

I created a similar circuit a while to control my spindle, but it should work fine for your application. I went a little farther and added an op-amp configured as a comparator, to get the opto-isopated PWM signal to be closer to rail-to-rail and symetrical, and an op-amp configured as a

Re: [Emc-users] Cutting involute spur gears with 4 axis?

There is also this application that will generate gcode for synchronous belt sprockets too: gearotic.com N. Christopher Perry On Jul 5, 2013, at 10:24, Chris Kelley tensait...@gmail.com wrote: Gregg, I've been playing with doing almost exactly what you are talking about. I've even cut

Re: [Emc-users] USB Pendant (XHC HB04)

the different keyboard layouts we can find on the market. For that, I am waiting for usage reports from other users. N. Christopher Perry -- This SF.net email is sponsored

Re: [Emc-users] What is the Wichita meeting?

Very cool! N. Christopher Perry On Jun 12, 2013, at 17:50, Sven Wesley svenne.d...@gmail.com wrote: 2013/6/12 Matt Shaver m...@mattshaver.com: On Wed, 12 Jun 2013 13:17:05 +0200 Sven Wesley svenne.d...@gmail.com wrote: ...and why isn't it promoted at http://linuxcnc.org? Mostly because

Re: [Emc-users] Upgrade to ATC

Lovely! But, alas, out of my non-professional price range. I built my whole machine for what that cost. N. Christopher Perry On Jun 12, 2013, at 18:07, Sven Wesley svenne.d...@gmail.com wrote: 2013/6/12 Sven Wesley svenne.d...@gmail.com: I saw a really nice ATC as an add-on that fits

Re: [Emc-users] OT: USM Motors

/ contamination on the friction surface. These are the first things I'd investigate. N. Christopher Perry On Jun 12, 2013, at 19:58, Kirk Wallace kwall...@wallacecompany.com wrote: Has anyone here worked on ultrasonic motors? I need to repair one (Canon lens) and need some insight

Re: [Emc-users] Cam Grinder

That mechanism is interesting, thought non-linear. You'd need to maximize the connecting rod lengths and then probably do some linearization in software to get the output to deliver uniform incremental displacement. N. Christopher Perry On May 30, 2013, at 3:42, Gregg Eshelman g_ala

Re: [Emc-users] variable reluctance motors

how, you could make a hell of a lot of money N. Christopher Perry On May 3, 2013, at 23:44, Gregg Eshelman g_ala...@yahoo.com wrote: --- On Fri, 5/3/13, N. Christopher Perry n_christopher_pe...@me.com wrote: clip The main scheme for accomplishing ripple reduction is harmonic injection

Re: [Emc-users] variable reluctance motors

. I'm sure there is academic work being done to explore other potential control schemes, but none I've heard of solves these problems yet. N. Christopher Perry On May 3, 2013, at 5:15, Roland Jollivet roland.jolli...@gmail.com wrote: Ok, I did not know that. I would think though, that ripple

Re: [Emc-users] Silly Q?

Modern PM motors using Neo magnets are less prone to weakening upon disassembly. Wound field motors care even less about being disassembled. N. Christopher Perry On May 3, 2013, at 6:24, Gene Heskett ghesk...@wdtv.com wrote: On Friday 03 May 2013 06:13:12 Steve Blackmore did opine: On Thu

Re: [Emc-users] Completely off topic. Kill-file on this key EntrenchedRanters

Those appear to have a lot of promise! Especially as thorium reactors. N. Christopher Perry On May 2, 2013, at 5:26, Mark Wendt wendt.m...@gmail.com wrote: On Wed, May 1, 2013 at 9:28 PM, andy pugh bodge...@gmail.com wrote: Yes. But free power makes that less of an issue. For example

Re: [Emc-users] variable reluctance motors

can find them. N. Christopher Perry On May 2, 2013, at 14:38, Cogoman cogo...@optimum.net wrote: I believe I have seen them used to advance the roller on an electric typewriter. When the current is off, there's no cogging like hybrid steppers have. That makes adjust paper height by hand seem

Re: [Emc-users] Completely off topic. Kill-file on this key EntrenchedRanters

On May 1, 2013, at 19:57, andy pugh bodge...@gmail.com wrote: On 2 May 2013 00:33, Karl Schmidt k...@xtronics.com wrote: Assuming that charging is free - one can run the numbers and know that battery powered cars are not at all practical. The market is driven by people that want to feel

Re: [Emc-users] Completely off topic. Kill-file on this key EntrenchedRanters

be practical (I certainly hope so) but it does no one any good to gloss over the realities of any technical challenge. N. Christopher Perry On May 1, 2013, at 21:56, Sebastian Kuzminsky s...@highlab.com wrote: On 05/01/2013 07:28 PM, andy pugh wrote: On 2 May 2013 02:18, N. Christopher Perry

Re: [Emc-users] Machine documentation: software, best practices

the same? N. Christopher Perry On Apr 16, 2013, at 19:23, Gene Heskett ghesk...@wdtv.com wrote: On Tuesday 16 April 2013 19:05:57 andy pugh did opine: On 16 April 2013 10:49, propcoder marius.alks...@gmail.com wrote: electronics (power, drivers, custom electronics with documentation and all

Re: [Emc-users] Touch-Off Button

Du. Staring right at it and not seeing it. Never mind. N. Christopher Perry On 2013-Apr-5, at 22:59, Sebastian Kuzminsky wrote: On 04/05/2013 08:46 PM, N. Christopher Perry wrote: I've been reading the AXIS GUI documentation and it mentions a 'Touch Off' button. My

[Emc-users] Touch-Off Button

I've been reading the AXIS GUI documentation and it mentions a 'Touch Off' button. My installation doesn't display this and I can't figure out why? I'm running EMC 2.4.6. Here are my ini and hal files: https://dl.dropbox.com/u/34705319/mini-mill.hal

Re: [Emc-users] Seasons Greetings

Happy Easter to you too, from New Hampshire. Lovely end to a pleasant winter. N. Christopher Perry On Mar 31, 2013, at 5:22, Peter Blodow p.blo...@dreki.de wrote: Best wishes and happy Easter Holidays to all of you from snow-ridden Bavaria! Peter

Re: [Emc-users] Regarding OpenSCAD

need to put a rapper around it. N. Christopher Perry On Feb 21, 2013, at 13:45, Sebastian Kuzminsky s...@highlab.com wrote: On 02/21/2013 11:41 AM, Sebastian Kuzminsky wrote: I've used FreeCAD to make drawings for machining before. Export as SVG, import the SVG into PyCAM, and get gcode out

Re: [Emc-users] Need socket head 6x1mm by 35mm bolts

Have you checked McMaster-Carr? They may not stock really low quantities, but prices are tolerable and there isn't a minimum buy. N. Christopher Perry On Jan 28, 2013, at 5:33, Mark Wendt wendt.m...@gmail.com wrote: On Mon, Jan 28, 2013 at 2:43 AM, Gene Heskett ghesk...@wdtv.com wrote: I

Re: [Emc-users] If true, sad news for us

Good luck I just checked a couple of days ago an found they were sold out. N. Christopher Perry On Jan 23, 2013, at 11:12, Bruce Layne linux...@thinkingdevices.com wrote: I've been getting old Craig's List PCs that I was fairly sure would work well with LinuxCNC for $75, and testing

Re: [Emc-users] Single Pulse Output?

the cap is charged. It stays charged until power is shut off again. Set the output enable threshold with a zener diode perhaps (if the AND gate doesn't give an on voltage you like) and the delay with capacitance size. Best, Jason On Dec 2, 2012 2:31 PM, N. Christopher Perry

Re: [Emc-users] Single Pulse Output?

I considered that, but I'm not convinced they will have consistent enough behavior. I really want a more definitive solution. N. Christopher Perry On Dec 3, 2012, at 10:35, andy pugh bodge...@gmail.com wrote: On 3 December 2012 15:15, Jason Burton lathebuil...@gmail.com wrote: How about

Re: [Emc-users] Single Pulse Output?

Thank you John and Andy. I've got my machine working almost exactly the way I want: When my spindle is enabled/disabled I have a oneshot triggering a port pin connected to a modified wireless remote for my vacuum system. Now I just need to build a workaround for the ~4 s pulse I get on that

[Emc-users] Spindle Control on the AXIS Interface

I started experimenting with spindle control and have found some odd behavior. I added the example HAL content from section 2 of this page http://linuxcnc.org/docs/html/examples/spindle.html. Got a error when I launched AXIS. Removed this line from the HAL file, which cleared the error:

Re: [Emc-users] Spindle Control on the AXIS Interface

, N. Christopher Perry n_christopher_pe...@me.com wrote: After removing that line AXIS launched without incident, but when I enable the spindle (F9) and try adjusting the speed, ether by clicking the '+' / '-' buttons or pressing F11/F12 I only get ~1% 100% PWM duty. The Axis UI increments

[Emc-users] Single Pulse Output?

Is there a way to have a parallel port output generate a single pulse on command? I have a vacuum system that requires a pulse to turn it on/off, and would like to have my machine turn the vacuum on automatically. N.C.

Re: [Emc-users] Single Pulse Output?

A 1 s pulse, +/-0.25 s, with +/-0.25 s timing accuracy would be adequate. N.C. On 2012-Nov-11, at 20:09, John Kasunich wrote: On Sun, Nov 11, 2012, at 07:44 PM, N. Christopher Perry wrote: Is there a way to have a parallel port output generate a single pulse on command? I have a vacuum

Re: [Emc-users] Current Sensors

I really prefer sensors made by these guys: http://www.lem.com These are the sensors used in a number of VVF drives used in high reliability applications. N.C. On 2012-Mar-18, at 13:00, Kirk Wallace wrote: These look pretty handy: http://www.pololu.com/catalog/product/1187 I'm thinking

Re: [Emc-users] Stupid LinuxCNC Tricks

Outstanding! N. Christopher Perry On Oct 23, 2012, at 23:38, Charles Steinkuehler char...@steinkuehler.net wrote: delta-arm 3D printer -- Everyone hates slow websites. So do we. Make your web apps faster

Re: [Emc-users] Gluing little balls

Edge cure grades might address that issue. They are specifically designed for those sorts of situations. Check out Loctite UV cure epoxies. N. Christopher Perry On Oct 10, 2012, at 4:32, andy pugh bodge...@gmail.com wrote: On 10 October 2012 03:53, Dave e...@dc9.tzo.com wrote: I'd look

Re: [Emc-users] Gluing little balls

The transmission curve for glass doesn't permit UV. That wouldn't be a good application for UV cure compounds. N. Christopher Perry On Oct 10, 2012, at 6:34, yann jautard brico...@free.fr wrote: Le 10/10/2012 10:32, andy pugh a écrit : On 10 October 2012 03:53, Dave e...@dc9.tzo.com wrote

Re: [Emc-users] Gluing little balls

How about a light/UV cure adhesive? Look up Loctite 5055 or 5056. Drop the ball in, give a little squirt of one of these, then hit it with the light from a bunch of UV LEDs in the 320 nm - 420 nm range. These sorts of LEDs are readily available now for just over a buck each. N. Christopher

Re: [Emc-users] Interesting

We aren't. I've been hearing from Linux jockeys that these boards are great for low power server applications. N. Christopher Perry On Oct 2, 2012, at 13:52, andy pugh bodge...@gmail.com wrote: Newegg have the D525 in stock, with a rather curious Limit 5 per customer. Perhaps we

Re: [Emc-users] Helical interpolation not quite round, WTF?

Igor, I don't have an answer for you, other than to check on how you've defined you trajectory planning accuracy outside of this routine. Why are you using two half circles? You could just send the cutter back to the starting xy location in a single G2 instruction. N. Christopher Perry

[Emc-users] Bridgeport Stepper Inductance

I've got an old CNC Bridgeport Vertical Mill I'm looking to upgrade. I'm fairly sure it is a BOSS 5. It does have stepper motors on in, but haven't had a chance to check whether they are Superiors or Sigmas motors yet. Except for the motors, it looks exactly like this:

Re: [Emc-users] Bridgeport Stepper Inductance

On Aug 30, 2012, at 11:05, Kirk Wallace kwall...@wallacecompany.com wrote: On Thu, 2012-08-30 at 08:55 -0400, N. Christopher Perry wrote: I've got an old CNC Bridgeport Vertical Mill I'm looking to upgrade. I'm fairly sure it is a BOSS 5. It does have stepper motors on in, but haven't had

Re: [Emc-users] Bridgeport Stepper Inductance

I hear you, but I've already got the Parker drives, they are at least as bullet proof, and they're free in my case. I'd rather not drop an extra $420 for the 203v drives. N. Christopher Perry On Aug 30, 2012, at 10:17, John Murphy j...@wyosip.com wrote: I'll second the 203V for a Boss

Re: [Emc-users] Emc-users Digest, Vol 76, Issue 124

Thank you for the effort... I guess I will have to put off this project a bit longer. At least until I can purchase some suitable drives. N. Christopher Perry On Aug 30, 2012, at 11:01, Matthew Herd herd.m...@gmail.com wrote: Anyway, I've got some Parker OEM650 stepper drives on hand

Re: [Emc-users] Stepper Inductance

I might pull one of the motors off the machine and bring it into work. We have an LCR meter here that would eliminate the guesswork. N. Christopher Perry On Aug 30, 2012, at 15:04, Matthew Herd herd.m...@gmail.com wrote: Thank you for the effort... I guess I will have to put off

Re: [Emc-users] Bridgeport Stepper Inductance

That great info. Thank you! If they were 1-2 mH in unipolar mode, then when parallel connected for bipolar mode operation they should be closer to 2-4 mH, which is just about right. I'll confirm this with an LCR meter. N. Christopher Perry On Aug 30, 2012, at 15:20, Steve Stallings steve

Re: [Emc-users] Final user of EMC2.

On Wed, Aug 15, 2012 at 09:42:18PM -0400, John Kasunich wrote: Do you delete word processor files from the file open menu of the word processor? Do you delete spreadsheets from the file open menu of the spreadsheet program? NO. In ms office in windows, you can in fact

[Emc-users] http://www.linuxcnc.org/wiki/uploads/cp1.tgz

Hello, I was looking through the wiki for some g-code tools and came across references to CP1. The link to the tarball is broken... Anyone know where I can download this? N.C. -- Live Security Virtual Conference

Re: [Emc-users] Boss 5 Conversion

Mike, Awesome. Thank you for the download. I'm considering using some surplus Parker OEM750 drives on mine, but will take a closer look at the Gecko hardware. N.C. On Jun 29, 2012, at 9:59, Michael Panchula panch...@umich.edu wrote: I converted my Boss 5 to PC based, 220V single phase

Re: [Emc-users] Installing an MPG Pendant

What is the syntax for doing that? N. Christopher Perry On Jun 19, 2012, at 6:26, andy pugh bodge...@gmail.com wrote: On 19 June 2012 06:19, Anders Wallin anders.e.e.wal...@gmail.com wrote: some googling suggests that PCIe parallel ports don't have any standard address, and the address may

Re: [Emc-users] Installing an MPG Pendant

I did reboot the system and recheck the address reported by lspci, which was the same. That may not be very definitive, but at least serves as a data point. Unfortunately the card doesn't appear to show up in the bios setup. I'll check again. N. Christopher Perry On Jun 19, 2012, at 1:19

Re: [Emc-users] Installing an MPG Pendant

Snip: On 19 June 2012 12:27, N. Christopher Perry n_christopher_pe...@me.com wrote: What is the syntax for doing that? http://www.linuxcnc.org/docview/html/hal/parallel_port.html Suggests that loadrt hal_parport cfg=0 1 in Ought to work. -- atp Atp, Thank you for the info

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