[Emc-users] more powerful nema23 need.
Ciao a tutti. i've built steel structures for nema23 stepper motor reelers (don't know if the word is exact, intended a drum to roll a wire on..). i've 4 of these motors, to setup an inverted tetrapod. (for those who followed me, i used this to make a volleyball fly in the air...just artistic purpose.) Now i would like to improve a little this system power, so i'm going to ask you an help, for i know your knowledge is huge. so, the nema23 i'm using are (on paper):rated current 2,8A , 4 wire and have a holding torque of 12,6 kgf/cm (175 oz/in). the calculated holding torque after the gear demult. and the drum diameter is 5,4 kg. in fact each motor has a gear set which doubles the power, and the drum is 5 cm radius. so 12,6 * 2 / 5. in the real world (with friction ect..) i've proven that when moving the max weight i can apply on each motor is around 1,3 kg. i would like to know if you know about nema23 motors (either stepper or servo) with more (kind of double..) torque. I'm asking about nema23, because in this way i don't need to change the structure, just need to exchange motors.. any idea? By the way, we did another show with this motors, in which we made a magic ball and a microphone fly! as soon as possible i'll post videos. ciao!! -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] more powerful nema23 need.
2010/11/22 Spiderdab 77...@tiscali.it: so, the nema23 i'm using are (on paper):rated current 2,8A , 4 wire and have a holding torque of 12,6 kgf/cm (175 oz/in). I have Nema23 steppers with rated holding torque 3.0Nm, which, if I am correct, is 425 oz/in. I just bought these: http://www.slidesandballscrews.com/sy60sth883008-nema-stepper-motor-p-118.html?cPath=45_81 You can find them on eBay too. I once purchased them from HubbardCNC: http://stores.ebay.com/HUBBARD-CNC-INC?_rdc=1 That particular 3.0 Nm motor is this one: http://cgi.ebay.com/Stepper-motor-425-oz-in-8-wire-Dual-S-Bipolar-Unipolar-/330473088298?pt=LH_DefaultDomain_0hash=item4cf1bb252a#ht_746wt_714 Most probably, other sellers have similar motors as well. Viesturs -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] more powerful nema23 need.
On 22 November 2010 10:50, Spiderdab 77...@tiscali.it wrote: i would like to know if you know about nema23 motors (either stepper or servo) with more (kind of double..) torque. They do exist but might not give you the advantage you expect. My limited experience is that the bigger motors become rather slow, in that the torque drops off more rapidly with speed than the smaller motors, and you are then into an area of diminishing returns. You might be better reducing the drum diameter and increasing the drive voltage. This will give you more wire tension and the higher voltage should allow you to run the motors faster. This might need new stepper drivers and power suppliesas I am talking about probably going to 60 or 70V. For this sort of high-speed work I think that servos are almost certainly a better choice, however they are not especially cheap. If you do go with a servo system then I would strongly suggest looking at the drives from Pico and Mesa which offload all the computational work to the PC and EMC2. This will be both cheaper and more satisfactory. http://pico-systems.com/motion.html http://www.mesanet.com (of particular interest will be the 7i39 and 8i20) -- atp -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Reactor
On Sun, Nov 21, 2010 at 07:40:25PM -0800, Kirk Wallace wrote: This is like another idea I have had. I have large compost piles that I use to process garden and kitchen waste. The piles can be controlled by monitoring temperature and adding green material, water and turning the pile. I shoot for 120 degrees or more to kill pathogens and seeds. More communities are turning to composting for recycling organic waste, so it seems to me, there should be a market for wireless temperature/humidity sensors for managing piles. I see it now, a colour bar graph, ending with a flashing red PILE CRITICAL display when it's about to catch fire. :-) It's a good thing I'm not using any electrolytics in the temperature probe, given that Arrhenius' equation shows component lifetime halving for every 10 °C temperature increase. Optimising the Carbon/Nitrogen ratio of the input is supposed to maximise breakdown, I've read. (I had a simple program once, which optimised mixes of kitchen scraps vs grass or leaves vs manure.) But I just chuck in what I have. For the welder helmet display, a voltage and amperage bar graph would be the primary information. Although, I suspect any good operator would not need the display. I also don't know if I would be able to watch the puddle and display at the same time. I'll have to test this. Adding limits, and flashing a small LED to attract attention to the display when one is exceeded, might improve utility. Erik -- Necessity is the mother of invention is a silly proverb. Necessity is the mother of futile dodges is much closer to the truth. The basis of growth of modern invention is science, and science is almost wholly the outgrowth of pleasurable intellectual curiosity. -Alfred N. Whitehead -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Reactor
On 22 November 2010 11:57, Erik Christiansen dva...@internode.on.net wrote: there should be a market for wireless temperature/humidity sensors for managing piles. I see it now, a colour bar graph, ending with a flashing red PILE CRITICAL display when it's about to catch fire. :-) It's a good thing I'm not using any electrolytics in the temperature probe, given that Arrhenius' equation shows component lifetime halving for every 10 °C temperature increase. Optimising the Carbon/Nitrogen ratio of the input is supposed to maximise breakdown, I've read. Reactors, Critical Piles, Half Lives. Are you trying to get us in trouble with those chaps with the black helicopters? -- atp -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Intel D510MO EPP bandaid question
On Sun, Nov 21, 2010 at 01:19:17PM -0500, Tom Easterday wrote: I just bought a new D510MO board for a router/plasma table we are building. If I install the LG EMC2 (2.4.5, I think is the latest) will EPP mode just work (is the patch in there)? Or do I have to enable something and/or load a patch still? The patch is not in 2.4.5. It will be in 2.4.6, which I hope to build soon. It is in the latest version from git stable packages packages from the emc2-buildbot http://emc2-buildbot.colorado.edu/~buildmaster/ and in the 'v2.4_branch' if you prefer to build emc2 from source yourself. Jeff -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] more powerful nema23 need.
Il 22/11/2010 12:26, Andy Pugh ha scritto: On 22 November 2010 10:50, Spiderdab77...@tiscali.it wrote: i would like to know if you know about nema23 motors (either stepper or servo) with more (kind of double..) torque. They do exist but might not give you the advantage you expect. My limited experience is that the bigger motors become rather slow, in that the torque drops off more rapidly with speed than the smaller motors, and you are then into an area of diminishing returns. You might be better reducing the drum diameter and increasing the drive voltage. This will give you more wire tension and the higher voltage should allow you to run the motors faster. This might need new stepper drivers and power suppliesas I am talking about probably going to 60 or 70V. For this sort of high-speed work I think that servos are almost certainly a better choice, however they are not especially cheap. If you do go with a servo system then I would strongly suggest looking at the drives from Pico and Mesa which offload all the computational work to the PC and EMC2. This will be both cheaper and more satisfactory. http://pico-systems.com/motion.html http://www.mesanet.com (of particular interest will be the 7i39 and 8i20) my stepper motors are these: http://www.goodluckbuy.com/nema-23-stepper-motor-12-6kgcm-1-8degre-4leads-56mm-57bygh56-401a.html ...and with this power supply: http://www.trcelectronics.com/Meanwell/sp-320-24.shtml so, supposing to use my steppers and changing only the drive, how much voltage do you think can i apply to these? Than i'm interested in learning how to use servos and closed loop, so i'm reading much on discussions about this. that's why people are asking me to use this system to move a camera of about 20-30kg. so i'll need a more serius/powerful/precise system.. i'm going to ask about in a later moment. thanks. -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] more powerful nema23 need.
2010/11/22 Andy Pugh a...@andypugh.fsnet.co.uk: That's a much more serious proposition, and will need real money. Probably around EUR1000 per motor (for a 20Nm 400V AC servo). For drives the Mesa 8i20 might be an option, though support in EMC2 is still rather experimental. Actually I had a case, where we were discussing servos vs steppers, and the main unanswered question about cost-efficient servo system was motors. Can anyone share some source for reasonably priced servo motors? I am interested in not-very-powerful motors - somewhere in 2-10 Nm range. I saw one in Pico Systems homepage, but 0,4 Nm seemed bit too small. By the way, is the pricing (at least approximate) for Mesa 8i20 available? I did not see in their homepage. Viesturs -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Reactor
I've seen something similar in Mig welders also.. although they are suppose to be constant voltage while TIG and stick is suppose to be constant current. I have a Hobart Cyber-TIG also. It works but the current control pot on the front needs to be replaced as it is flaky. I have the single phase version and it is the most powerful single phase welder I have ever used.I've only used it for stick welding so far, but I have a tig torch setup for it also. They don't make them like that anymore! I have no idea if the meters on the unit even work as I really can't look at them while it is in use also. Dave On 11/21/2010 5:14 PM, Kirk Wallace wrote: On Sun, 2010-11-21 at 21:27 +, Leslie Newell wrote: Yes it does sound like a variable reactor setup. The control signal is DC and pushes the core into saturation, reducing it's inductance. The early BOSS Bridgeport CNC mills used this sort of setup to reduce the idle current on the stepper motors. It also used to be quite commonly used on TIG welders to control the output current. These days they do it with electronics instead. Les See SX1 at E5 and G7 http://www.wallacecompany.com/machine_shop/Hobart_Cyber-TIG/Manual/programmer/hobart_programmer-0051a.png (Short URL) http://alturl.com/2c8xe One of my problems is that I can't watch the meters while welding. It would be nice to have halscope as a voltage and current verses time display. This way I can see what happened after the weld is done, or maybe put a display in my helmet for a realtime display. While I am at it, I could replace the programmer (does current and gas cycle timing) with HAL too. But first, I need to get a good understanding of how the welder works. -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] more powerful nema23 need.
Il 22/11/2010 15:40, Andy Pugh ha scritto: On 22 November 2010 14:23, Spiderdab77...@tiscali.it wrote: my stepper motors are these: http://www.goodluckbuy.com/nema-23-stepper-motor-12-6kgcm-1-8degre-4leads-56mm-57bygh56-401a.html Those are quite short steppers, there are some about twice as long with about twice the torque, yes, i've found them for something like 30-40€ each.. and could be ok. so, supposing to use my steppers and changing only the drive, how much voltage do you think can i apply to these? The motors have a dielectric strength quoted of 500V AC for one minute. They should work fine at 100V. The limiting factor is likely to be the stepper drive. that's what i was thinking.. The stepper drive will limit the current to the set value, so steady-state the voltage across the motor will be exactly the same as it is now (about 2.5V). The advantage is that when the motor is spinning rapidly it can still supply the same current with a 50V back-emf. didn't understand this part. have you got a name of a drive i could use? Than i'm interested in learning how to use servos and closed loop, so i'm reading much on discussions about this. that's why people are asking me to use this system to move a camera of about 20-30kg. so i'll need a more serius/powerful/precise system.. i'm going to ask about in a later moment. That's a much more serious proposition, and will need real money. Probably around EUR1000 per motor (for a 20Nm 400V AC servo). For drives the Mesa 8i20 might be an option, though support in EMC2 is still rather experimental. i've seen that, and found it very interesting! a suggestion on where to find such motors? -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] more powerful nema23 need.
On 22 November 2010 16:16, Spiderdab 77...@tiscali.it wrote: The stepper drive will limit the current to the set value, so steady-state the voltage across the motor will be exactly the same as it is now (about 2.5V). The advantage is that when the motor is spinning rapidly it can still supply the same current with a 50V back-emf. didn't understand this part. have you got a name of a drive i could use? A stepper drive should run at constant current. However a stepper motor (in fact any motor) can also be considered as a generator. To push the required current through the motor you need a supply voltage which is higher than the voltage that the motor generates at that speed. So, while the stepper motor might need 2.5 volts to push 2A through it when static, it takes 50, 70, maybe 100V to push the same current through it at high speed. This is a 70V drive: http://www.slidesandballscrews.com/2m880n-microstepping-driver-p-303.html?cPath=44_97 And for even more money, this one runs direct from mains voltage input: http://www.slidesandballscrews.com/2m2280n-high-voltage-stepper-driver-p-304.html?cPath=44_97 (And, while we are there, these drives designed to bolt direct to the back of the motors look interesting) http://www.slidesandballscrews.com/uim24008-miniature-stepper-driver-p-483.html?cPath=44_97 i've seen that, and found it very interesting! a suggestion on where to find such motors? eBay? Or, if somebody else is paying: http://www.inverterdrive.com/group/Servo-Motors-AC/default.aspx -- atp -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] more powerful nema23 need.
On 22 November 2010 15:34, Viesturs Lācis viesturs.la...@gmail.com wrote: Actually I had a case, where we were discussing servos vs steppers, and the main unanswered question about cost-efficient servo system was motors. Can anyone share some source for reasonably priced servo motors? I have always wondered if the dmm-tech drives will work with EMC2. The pricing looks very good. http://www.dmm-tech.com/Motor.html -- atp -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] the Intel D510MO problem (and an apology to Don Stanley, et al.)
I think that some Intel people are on LKML. One of them could probably help. If you can't find any email addresses there, maybe grep the kernel source for @intel Mark On Nov 13, 2010 4:41 PM, Kent A. Reed knbr...@erols.com wrote: On 11/13/2010 5:59 AM, Andy Pugh wrote: On 13 November 2010 01:50, Jeff Eplerjep...@unpythonic.net wrote: The solution--to look for the parport extended configuration register where it is likely to be--is more in the vein of a workaround than a fix, Would I be right in assuming that the real fix would have to come from Intel as a BIOS change? Has anyone looked at how one would inform Intel of the problem? (I looked very briefly, and then lost interest) Andy: Yes, yes, a thousand times yes, but...I also tried to figure out how to inform Intel and I also lost interest when it became clear they have dug a deep moat between us unwashed end-users and their product teams. I was depressed to find that at least one other person had already reported the problem on Intel's message board last spring. I saw neither a response to him nor any indication in the next bios release that his message had been heeded. If someone has an idea how to break through to the D510MO team, please give it your best shot. My thanks to Jeff for spending time on the workaround and to Stuart for hosting the EMC2 workshop. Despite the obvious benefits of using the Internet as a distributed workspace, these face-to-face gatherings of birds-of-a-feather are really important for keeping up the energy and enthusiasm of the EMC2 team. I wish I could have delivered my board in person! Regards, Kent -- Centralized Desktop Delivery: Dell and VMware Reference Architecture Simplifying enterprise desktop deployment and management using Dell EqualLogic storage and VMware View: A highly scalable, end-to-end client virtualization framework. Read more! http://p.sf.net/sfu/dell-eql-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] more powerful nema23 need.
On Mon, 22 Nov 2010 17:16 +0100, Spiderdab 77...@tiscali.it wrote: Il 22/11/2010 15:40, Andy Pugh ha scritto: steady-state the voltage across the motor will be exactly the same as it is now (about 2.5V). The advantage is that when the motor is spinning rapidly it can still supply the same current with a 50V back-emf. didn't understand this part. have you got a name of a drive i could use? Gecko drives are very popular and work quite well. http://geckodrive.com/products.aspx John Kasunich -- John Kasunich jmkasun...@fastmail.fm -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] more powerful nema23 need.
Il 22/11/2010 15:40, Andy Pugh ha scritto: On 22 November 2010 14:23, Spiderdab77...@tiscali.it wrote: my stepper motors are these: http://www.goodluckbuy.com/nema-23-stepper-motor-12-6kgcm-1-8degre-4leads-56mm-57bygh56-401a.html Those are quite short steppers, there are some about twice as long with about twice the torque, so, supposing to use my steppers and changing only the drive, how much voltage do you think can i apply to these? The motors have a dielectric strength quoted of 500V AC for one minute. They should work fine at 100V. The limiting factor is likely to be the stepper drive. The stepper drive will limit the current to the set value, so steady-state the voltage across the motor will be exactly the same as it is now (about 2.5V). The advantage is that when the motor is spinning rapidly it can still supply the same current with a 50V back-emf. Than i'm interested in learning how to use servos and closed loop, so i'm reading much on discussions about this. that's why people are asking me to use this system to move a camera of about 20-30kg. so i'll need a more serius/powerful/precise system.. i'm going to ask about in a later moment. That's a much more serious proposition, and will need real money. Probably around EUR1000 per motor (for a 20Nm 400V AC servo). For drives the Mesa 8i20 might be an option, though support in EMC2 is still rather experimental. ...and what about the 7i29? i could use two of them for a 4 motors system.. -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Reactor
On Mon, 2010-11-22 at 10:57 -0500, Dave wrote: ... snip I have a Hobart Cyber-TIG also. It works but the current control pot on the front needs to be replaced as it is flaky. I replaced mine with a temporary single turn potentiometer. The original was intermittent so I took it apart: http://www.wallacecompany.com/machine_shop/Hobart_Cyber-TIG/00014-1a.jpg It turns out that there is a hair thin wire bonded to a screw that mounts a solder lug to the side of the pot. If you take the screw out you break the wire and the unit is ruined. Every once in a while these pots come up on eBay, but it can take time to find one that matches. I have the single phase version and it is the most powerful single phase welder I have ever used.I've only used it for stick welding so far, but I have a tig torch setup for it also. They don't make them like that anymore! I have no idea if the meters on the unit even work as I really can't look at them while it is in use also. Dave In going through the schematics, I found an adjustment procedure for the Max and Min current setting, where the WORK and ELECTRODE terminals are shorted. Then, with HF off,and the current switched on (press foot pedal), the ammeter should sweep up to match the set current. Changing the Weld Current knob should change the ammeter reading (3 to Max Amps, try with Remote switch On and Off). If you remove the WORK clamp and press the pedal, the voltage meter should indicate full voltage of about 85 Volts. I am thinking these tests might come in handy for setting up a weld, but it would be better to talk to someone that has used one of these for a living. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] more powerful nema23 need.
On 22 November 2010 16:50, gene heskett ghesk...@wdtv.com wrote: This is a 70V drive: http://www.slidesandballscrews.com/2m880n-microstepping-driver-p-303.html?cPath=44_97 And for even more money, this one runs direct from mains voltage input: http://www.slidesandballscrews.com/2m2280n-high-voltage-stepper-driver-p-304.html?cPath=44_97 Those prices are in Euros? UK Pounds. We don't need no Euros! -- atp -- atp -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Reactor
Is a single turn pot ok or does it really need to be a ten turn or whatever it is? Most of the welder I know are very seat of the pants type of guys. I seriously doubt if they ever look at the meters. Not hot enough turn it up. Too hot.. turn it down. Can't get it hot enough.. get a different welder. They know when the welder is malfunctioning when it can't do what it was doing the day before. :-) I do a fair amount of welding. Mostly stick and flux cored wire since they are usually outdoor repairs. The more I weld, the more I find myself ignoring the knobs and doing the same thing. It has taken several years, but I am finally comfortable doing overhead welding. I thought I would never get there! Dave On 11/22/2010 12:29 PM, Kirk Wallace wrote: On Mon, 2010-11-22 at 10:57 -0500, Dave wrote: ... snip I have a Hobart Cyber-TIG also. It works but the current control pot on the front needs to be replaced as it is flaky. I replaced mine with a temporary single turn potentiometer. The original was intermittent so I took it apart: http://www.wallacecompany.com/machine_shop/Hobart_Cyber-TIG/00014-1a.jpg It turns out that there is a hair thin wire bonded to a screw that mounts a solder lug to the side of the pot. If you take the screw out you break the wire and the unit is ruined. Every once in a while these pots come up on eBay, but it can take time to find one that matches. I have the single phase version and it is the most powerful single phase welder I have ever used.I've only used it for stick welding so far, but I have a tig torch setup for it also. They don't make them like that anymore! I have no idea if the meters on the unit even work as I really can't look at them while it is in use also. Dave In going through the schematics, I found an adjustment procedure for the Max and Min current setting, where the WORK and ELECTRODE terminals are shorted. Then, with HF off,and the current switched on (press foot pedal), the ammeter should sweep up to match the set current. Changing the Weld Current knob should change the ammeter reading (3 to Max Amps, try with Remote switch On and Off). If you remove the WORK clamp and press the pedal, the voltage meter should indicate full voltage of about 85 Volts. I am thinking these tests might come in handy for setting up a weld, but it would be better to talk to someone that has used one of these for a living. -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] more powerful nema23 need.
Viesturs Lācis wrote: Actually I had a case, where we were discussing servos vs steppers, and the main unanswered question about cost-efficient servo system was motors. Can anyone share some source for reasonably priced servo motors? I am interested in not-very-powerful motors - somewhere in 2-10 Nm range. I saw one in Pico Systems homepage, but 0,4 Nm seemed bit too small. I don't have those available any more, anyway. Keling has some truly awesome brushless servo motors, and I have drives for them. The size 23 motor from Keling is $52 without encoder, and the CUI AMT103 encoder from Digi-Key is about $28. My servo amp for brushless motors is $150 per axis. The PWM controller for that amp is $250 for 4 axes. Jon -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Reactor
On Mon, 2010-11-22 at 13:07 -0500, Dave wrote: Is a single turn pot ok or does it really need to be a ten turn or whatever it is? A single turn, or rather 3/4 turn, is fine. I just put the ten turn knob on the replacement to keep from losing it. This potentiometer sets the range that the remote pedal operates in, so the fine tuning is in the pedal. The fine tuning of the ten-turn might come into play if your setup doesn't use the pedal and the ten-turn is the only fine tuning you have. Most of the welder I know are very seat of the pants type of guys. I seriously doubt if they ever look at the meters. Not hot enough turn it up. Too hot.. turn it down. Can't get it hot enough.. get a different welder. They know when the welder is malfunctioning when it can't do what it was doing the day before. :-) I do a fair amount of welding. Mostly stick and flux cored wire since they are usually outdoor repairs. The more I weld, the more I find myself ignoring the knobs and doing the same thing. It has taken several years, but I am finally comfortable doing overhead welding. I thought I would never get there! Dave My problem (or just one of many) is that I have gotten various symptoms from when I started using the welder, so I don't have a known good baseline. One problem I have had recently is that I can start an arc easily, but I get a shower of small arcs and no heat. On the third or fourth start, I finally get a coherent hot spark. Watching the meters might indicate what is going on. I suppose I could just set up my camera to take a video clip of the panel, and be done with it. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] splash geometry
Gentlemen, Where would I find the geometry for the EMC2.4/AXIS splash? thanks Stuart -- dos centavos -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] splash geometry
On Mon, 2010-11-22 at 17:55 -0600, Stuart Stevenson wrote: Gentlemen, Where would I find the geometry for the EMC2.4/AXIS splash? thanks Stuart Try?: /usr/share/axis/images/axis.ngc -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Reactor
A single turn, or rather 3/4 turn, is fine. Good to know.. I will swap it out for a single turn. One problem I have had recently is that I can start an arc easily, but I get a shower of small arcs and no heat. On the third or fourth start, I finally get a coherent hot spark. Sounds like you are getting the high frequency starting arc but not the power. I know that if I am stick welding and I have the high freq on, the the high freq arcs will jump between the electrode and ground but the power arc won't start until I get the stick electrode closer to the workpiece. When I get about 1/4 from the workpiece the power arc will jump. Perhaps you have a bad welding lead connection/bad ground or the voltage output is too low? Thanks, Dave On 11/22/2010 4:42 PM, Kirk Wallace wrote: On Mon, 2010-11-22 at 13:07 -0500, Dave wrote: Is a single turn pot ok or does it really need to be a ten turn or whatever it is? A single turn, or rather 3/4 turn, is fine. I just put the ten turn knob on the replacement to keep from losing it. This potentiometer sets the range that the remote pedal operates in, so the fine tuning is in the pedal. The fine tuning of the ten-turn might come into play if your setup doesn't use the pedal and the ten-turn is the only fine tuning you have. Most of the welder I know are very seat of the pants type of guys. I seriously doubt if they ever look at the meters. Not hot enough turn it up. Too hot.. turn it down. Can't get it hot enough.. get a different welder. They know when the welder is malfunctioning when it can't do what it was doing the day before. :-) I do a fair amount of welding. Mostly stick and flux cored wire since they are usually outdoor repairs. The more I weld, the more I find myself ignoring the knobs and doing the same thing. It has taken several years, but I am finally comfortable doing overhead welding. I thought I would never get there! Dave My problem (or just one of many) is that I have gotten various symptoms from when I started using the welder, so I don't have a known good baseline. One problem I have had recently is that I can start an arc easily, but I get a shower of small arcs and no heat. On the third or fourth start, I finally get a coherent hot spark. Watching the meters might indicate what is going on. I suppose I could just set up my camera to take a video clip of the panel, and be done with it. -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] splash geometry
that is the gcode program On Mon, Nov 22, 2010 at 7:02 PM, Kirk Wallace kwall...@wallacecompany.comwrote: On Mon, 2010-11-22 at 17:55 -0600, Stuart Stevenson wrote: Gentlemen, Where would I find the geometry for the EMC2.4/AXIS splash? thanks Stuart Try?: /usr/share/axis/images/axis.ngc -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- dos centavos -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] splash geometry
On Mon, Nov 22, 2010 at 05:55:35PM -0600, Stuart Stevenson wrote: Gentlemen, Where would I find the geometry for the EMC2.4/AXIS splash? thanks Stuart I generated it with truetype-tracer, and then massaged it by hand to add the block delete and make it into two lines. The font I used is named in a gcode comment: (font: /usr/share/fonts/truetype/freefont/FreeSerifBoldItalic.ttf) -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] splash geometry
ugh :) - I was hoping to find the exact geometry to create 5 axis tool path for the robot and sharpie - it would be cool to watch the sharpie wiggle and still draw straight lines and round circles On Mon, Nov 22, 2010 at 9:16 PM, Chris Radek ch...@timeguy.com wrote: On Mon, Nov 22, 2010 at 05:55:35PM -0600, Stuart Stevenson wrote: Gentlemen, Where would I find the geometry for the EMC2.4/AXIS splash? thanks Stuart I generated it with truetype-tracer, and then massaged it by hand to add the block delete and make it into two lines. The font I used is named in a gcode comment: (font: /usr/share/fonts/truetype/freefont/FreeSerifBoldItalic.ttf) -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- dos centavos -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] splash geometry
Our seat of Mastercam has a reverse post to create geometry from gcode but it is very old and chokes on the axis.ngc gcode program. thanks Stuart -- dos centavos -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Reactor
Perhaps you have a bad welding lead connection/bad ground or the voltage output is too low? Thanks, Dave I don't know what's wrong, it just not working quite right: http://www.bunkerofdoom.com/00_misc/welder/index.html (My hat's off to them, they're making do with what they have and actually making it work) -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] splash geometry
On Mon, Nov 22, 2010 at 09:24:40PM -0600, Stuart Stevenson wrote: ugh :) - I was hoping to find the exact geometry to create 5 axis tool path for the robot and sharpie - it would be cool to watch the sharpie wiggle and still draw straight lines and round circles It's possible you could modify truetype-tracer to generate this. Truetype fonts have the vectors for each path in order, all paths are closed, and they go in a predictable direction (ccw outside edges, cw inside). You could add angular words to make the tool tip 'outward' with only a lot of work. -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Seeking ideas how to sync an AC generator to 60 HZ average.
Hi All; My next project is a remote off grid 60 HZ power unit. I am thinking of a EMC2 PID to control the RPM. I am also expecting maybe a 1-2 HZ momentary shift as the big power loads come on and off line. I am looking for a method to get a reliable reference that can be used to average 60 HZ through the power surges and correct a local timer drift for long term accuracy. A simple WWV corrected timer (a Wall mart Atomic clock with outputs). Anyone know of such a device? Thanks Don -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Seeking ideas how to sync an AC generator to 60 HZ average.
Do you have internet access at the site? If you are running an PC for EMC, you can use NTP to keep the PC's clock synced to the rest of the world, and some HAL bits and pieces to keep the generator synced to the PC clock. EMC's encoder component could easily count 60Hz. On Tue, 23 Nov 2010 00:11 -0500, Don Stanley dstanley1...@gmail.com wrote: Hi All; My next project is a remote off grid 60 HZ power unit. I am thinking of a EMC2 PID to control the RPM. I am also expecting maybe a 1-2 HZ momentary shift as the big power loads come on and off line. I am looking for a method to get a reliable reference that can be used to average 60 HZ through the power surges and correct a local timer drift for long term accuracy. A simple WWV corrected timer (a Wall mart Atomic clock with outputs). Anyone know of such a device? Thanks Don -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- John Kasunich jmkasun...@fastmail.fm -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Reactor
Wow.. If you look closely it appears he has at least a couple of different taps on that transformer also! Dave On 11/22/2010 10:31 PM, Kirk Wallace wrote: Perhaps you have a bad welding lead connection/bad ground or the voltage output is too low? Thanks, Dave I don't know what's wrong, it just not working quite right: http://www.bunkerofdoom.com/00_misc/welder/index.html (My hat's off to them, they're making do with what they have and actually making it work) -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Seeking ideas how to sync an AC generator to 60 HZ average.
A cheap USB GPS can be used to extract the time off the satellite signal. Easier to interface to than a Walmart Atomic clock. I have a couple of those Atomic clocks and they sometimes get confused. Dave On 11/23/2010 12:11 AM, Don Stanley wrote: Hi All; My next project is a remote off grid 60 HZ power unit. I am thinking of a EMC2 PID to control the RPM. I am also expecting maybe a 1-2 HZ momentary shift as the big power loads come on and off line. I am looking for a method to get a reliable reference that can be used to average 60 HZ through the power surges and correct a local timer drift for long term accuracy. A simple WWV corrected timer (a Wall mart Atomic clock with outputs). Anyone know of such a device? Thanks Don -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Increase Visibility of Your 3D Game App Earn a Chance To Win $500! Tap into the largest installed PC base get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
