Re: [Emc-users] OT: and Soapbox: 3D Printer Mods?
On Tuesday 05 June 2012 02:28:48 Jeshua Lacock wrote: Personally what I would like to see is: • Compatible with existing popular slicing software, filtering with a script is acceptable (but of course not ideal), for instance using the python script at: http://www.thingiverse.com/thing:5233 Yes, but in the long run the scripts functionality is integrated into the slicing software. • Compatible with off the shelf components such as MakerBots newest extruder the MK7: My setup for 3mm wire is similar: http://dl.dropbox.com/u/18713924/IMG_3032.JPG You see the stepper and the driver board connected to the parallel port. Notice the changed position of the temperature sensor near to the nozzle. This effects measurement accuracy. The motor axis has a second axis end for mounting a encoder (not visible). The flat front face is for a cpu-cooler (maybe with a peltier in between). I am wondering this reprap wire feeders are running without any monitoring: my suggestion is a encoder driven by the wire. My summary of electronics needed: • Stepper driver (nothing to do, use lcnc usual parts, movement is lcnc driven!) • Encoder interface (maybe 2x, nothing to do) • 3x temperatur measurement, 12bit resolution (2x nozzle, 1x feader housing) • 3x pwm (nozzle, peltier, fan) My suggestion: something like pmod's: http://www.digilentinc.com/Products/Catalog.cfm?NavPath=2,401Cat=9 and a avr/arm board with eth. You use what you need (price/accuracy). For cheap temperature measurement with 1n4148 up to 400 °C see Bild2 from: http://thomaspfeifer.net/laminator_temperatur_regelung.htm • And their controller card. If we could eliminate the card with standard CNC hardware, that works too. But this card looks like it essentially just controls the power of the extruder heater. http://store.makerbot.com/extruder-controller-v3-6.html This controller does not fullfill all my requierements. But have thermocouple support. But this is only an advantage, if you use a better ad converter. Note the CNC conversion at: http://www.thingiverse.com/thing:5233 I am working on a very similar setup. Have you seen a extruder with MK2-M10 taper? And the electronic board has 2 connectors: power and eth. Easy to change. I am not sure how the slicing software handles the extruder stepper motor, but I would guess it is with G Code. http://www.reprap.org/wiki/EmcRepStrap My suggestion: we change the postprocessor of the slicing software to fit lcnc gcode requirements. • Multiple extruder support would be great too, either for increased print speeds and/or different material. That of course can come later. You can use multiple boards of the above described type or use more pmod's. My suggestion is to use a pcb board mechanically attached to the extruder with a cpu and eth/rs232. Alternatives to avr based boards are: - Raspberry Pi - OLINUXINO (https://github.com/OLIMEX/OLINUXINO from http://www.olimex.com/dev/index.html) - ? Cpu power is sufficient to run termperature controll. Cheers, Joachim -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Encoder discs
On 06/04/2012 02:05 PM, gene heskett wrote: Yeah, its DNA. Darn it. Ah, nuts. Ever have a gallon of spar varnish come blasting out of a cane rod dip tube? No, can't say as I have. What caused that? The dip tube is a 1 3/4 diameter clear tube, with a removable valve threaded into a stopper. That plugs into the bottom of the tube. I'd plugged the stopper into the tube, climbed up on the step ladder and began to pour the varnish into the tube. The tube got about 3/4's full or so, and the weight of the varnish column pushed the stopper out. Big popping sound, and varnish gushing onto the floor. Guess I hadn't pushed the stopper in all the way. ;-) Makes a concrete garage floor kinda like a skating rink. I did get a beautiful shop floor finish out of the deal though... Chuckle... Was that your excuse to put down a wooden floor? No need now. Varnished concrete is easy to clean. ;-) Cheers, Gene Mark -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Commutating Reactor
Dennis, It was all we could do to run it for 10 minutes and keep it anywhere near 1800 RPM... a real circus that was. John On 6/4/2012 1:48 PM, ceen...@in-front.com wrote: Did John run it for an hour or longer to be able to repeat the only one hour run time situation? I forgot what the capacity of the borrowed generator was to compare it to a 15HP weak leg system. Even if the generator varied in speed and voltage when loaded, one thing should be fairly certain - the phases should be 120 degrees apart. That is helpful by itself. Dennis He ran it on a Diesel generator, and it did NOT trip. So, it is SOMTHING about the power source. Jon -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: and Soapbox: 3D Printer Mods?
Hi Joachim, On 05.06.12 09:08, Joachim Franek wrote: • 3x temperatur measurement, 12bit resolution (2x nozzle, 1x feader housing) Is the high resolution needed because the PID temperature controller needs something like ten times the resolution the control loop is intended to achieve, much like a machine axis? (Giving something like 9 bits, or +-0.6 °C at 300 °C, IIUC.) ... For cheap temperature measurement with 1n4148 up to 400 °C see Bild2 from: http://thomaspfeifer.net/laminator_temperatur_regelung.htm Well, for a quite limited time. Yes, the predictable 2 mv/°C temperature coefficient of a silicon diode's forward drop is a useful sensor for temperature measurement. If 10 mv/°C is desired, then we can wire 5 of them in series, in lieu of adding an op-amp. But they're typically only rated to 175 °C Absolute Maximum, and suffer shortened life even at that temperature. The Arrhenius equation predicts the accelerated ageing which is observed, and it amounts to a halving of lifetime for each 10 °C rise in temperature. Already at 175 °C, the diode will last 1/32768 (.3) of the life at 25 °C. I'm curious to hear how long the diode lasts in practice at 400 °C. Dopant rediffusion would be erasing the diode junction at a goodly rate, I fear. Erik -- A friend is a person who knows all about you but likes you just the same. - W.G.P -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: and Soapbox: 3D Printer Mods?
On Tuesday 05 June 2012 09:08:34 Joachim Franek wrote: Alternatives to avr based boards are: - Raspberry Pi I have in the moment a rpi board from a fried in my hands and have seen it booting to a command login. Looking to http://elinux.org/Rpi_Low-level_peripherals I think there are for a extruder control: - spi or i2c (for a ad converter) - 8 pins (for pwm) see for details: http://elinux.org/RPi_BCM2835_GPIOs Driver for spi and i2c: http://www.bootc.net/archives/2012/05/19/i2c-and-the-raspberry-pi/ Some source code is on the page to drive the pins. Summary: It seems to me an overshoot to use so many cpu power for such a simple task, but the board is cheap and has a camera interface. Cheers, Joachim -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: and Soapbox: 3D Printer Mods?
I forgot: http://elinux.org/RPi_Expansion_Boards Maybe this is a stating point: http://zuzebox.wordpress.com/2012/03/14/userport-for-raspberry-pi-v0-10/ Cheers, Joachim -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: and Soapbox: 3D Printer Mods?
On Tue, Jun 5, 2012 at 2:08 AM, Joachim Franek joachim.fra...@pibf.dewrote: I am not sure how the slicing software handles the extruder stepper motor, but I would guess it is with G Code. http://www.reprap.org/wiki/EmcRepStrap My suggestion: we change the postprocessor of the slicing software to fit lcnc gcode requirements. Both popular slicing programs (skeinforge and slic3r) treat the extruder as an axis called 'E'. This conflicts with LinuxCNC, but is easy to fix. Each program has an option to rename the axis before the file is output. In other words, I just have the extruder set up as the 'A' axis. The slicing software produces G-code with coordinated moves. Aside from calibrating the A axis to move 1mm of filament for 1degree of axis movement, I've never had to bother with it. Alex -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: and Soapbox: 3D Printer Mods?
There is a big difference between what is legal, what you can get away with, and what actually occurs. If you copy a patented device and use it in your garage for your own use (not making any sales with it), no one is going to come after you if no one knows it exists. Even if the company who owns the patent knows that you have replicated their device, what would there motivation be in coming after you? If there is no motivation, they likely will not come after you, since exercising the legal system requires money. If you are making widgets via the patented method and selling them or selling the patented machine, and infringing on the patent holders sales, then there is a very good chance they will come after you. While the law might be black and white, how it impacts situations is entirely different. There is the right vs wrong according to the law. Then there is what actually happens and that is more determined by money than anything else. I have a legitimate legal case against a guy right now. I should be able to sue him for $10K and win easily, but it would cost me about $10K to do it and then there is the question about collecting any judgment. So it is not going to happen even though I have suffered damages. I am better off eating the damages and paying to correct the damages myself. While that might seem wrong, that is the way the system works. If you write software or make things there is a good chance you have or will infringe on someones patent unknowingly. If that happens and the patent holder finds out and wants to stop you, you might get a cease and desist letter which is pretty cheap to produce. If you continue on and the patent holder wants to stop you, everything gets much more expensive for the patent holder at that point.There is no patent police who enforce patent law without charge. If you can't afford to enforce a patent, then IMO, a patent is pretty useless and can even be damaging.Since when a patent is filed, you have to disclose the invention and it is made public, which makes copying the device or process a lot easier. Oftentimes you are better off not patenting something, and simply using that invention for your own purposes as the knowledge will not become public via the patent system. I once invented a patentable control scheme for a machine that was unique and allowed us to make the machine at a lower cost than the competitors. These are low volume machines - worldwide perhaps 100 are sold annually. We talked about patenting the idea but after a lot of thought we decided not to since the competition was far behind us in their methods of control and we knew that if we patented the idea, they would become aware of it (or at least it was much more likely). So we never patented the idea. That was about 10 years ago and the competition has never figured it out, as they were apparently too busy struggling with the economy, and being bought up and sold off.The concepts are very simple and common in the electronics world but not understood in this machine industry. The implementation of the idea is not even hidden on the machine, it is right out in the open and visible on the machine, but a layman would never recognize how it works, so the secret has been safe for about 10 years now. The same concept is utilized in 4 places on a typical machine, is much more reliable than the alternatives, and it saves about $4-5,000 per machine, maybe slighty more. So in this case not patenting the idea was obviously the right approach. Dave On 6/4/2012 10:03 PM, Kenneth Lerman wrote: On 06/04/2012 08:31 PM, Jeshua Lacock wrote: On Jun 4, 2012, at 5:41 PM, dave wrote: It has always been my understanding that you can make a patented device; you just can't sell it. I don't think this precludes using that patented device to make things which you sell. IANAL and I don't play one on TV. It is my understanding that in the US, you may NOT use a process or make a patented device without a license. It does not matter whether you sell it or not. At one point there was a patent for deactivating hydrogen peroxide for cleaning contact lenses by means of a (very small) platinum catalyst. The cleaning kit included a license to use that process. You could not just do it yourself without the license. (Well, you could, but you would be infringing on the patent.) Ken Good point. Also, as far as I know, Makerbot et al have not had much of a legal battle so far. The only incidents I am aware of is a handful of big companies have sent them cease and desist letters for things online at thingverse that were essentially 3D scans of copyrighted geometry. Best, Jeshua Lacock Founder/Engineer 3DTOPO Incorporated http://3DTOPO.com Phone: 208.462.4171 -- Live Security Virtual Conference Exclusive live event
Re: [Emc-users] Encoder discs
On Tuesday, June 05, 2012 10:23:40 AM Mark Wendt did opine: On 06/04/2012 02:05 PM, gene heskett wrote: Yeah, its DNA. Darn it. Ah, nuts. Ever have a gallon of spar varnish come blasting out of a cane rod dip tube? No, can't say as I have. What caused that? The dip tube is a 1 3/4 diameter clear tube, with a removable valve threaded into a stopper. That plugs into the bottom of the tube. I'd plugged the stopper into the tube, climbed up on the step ladder and began to pour the varnish into the tube. The tube got about 3/4's full or so, and the weight of the varnish column pushed the stopper out. Big popping sound, and varnish gushing onto the floor. Guess I hadn't pushed the stopper in all the way. ;-) I think that's called Hindsight. Its always perfect. :) My problem was in thinking it blew out of the top of the tube, and I of course was looking for the cause. :( Have you considered using a similar construction but in heavier walled PVC, with the bottom cap glued on with its drain valve, but fitted with an adapter on top that the usual square knobbed plug screws into, with a wire attached to the inside to hold and retrieve the rod with, and a hose barb screwed into the plug so you can attach a cheap refrigeration pump and pull a decent vacuum on it for 15 minutes before letting the air (or better yet, an air displacer gas to preserve the varnish) back in, and letting it sit for another hour to suck the varnish into the pores before you lift the rod out? No clue what it would do for the action feel, but it should result in a more durable rod, quite waterproof should it get dunked as the tip section is prone to be when the net is brought to hand. Actually, with that small a surface exposed to the air, the varnish will probably store right in that tube better than if drained back into the can, just refill when it no longer covers the rod hanging from the wire. Arrange your lifting rig so the wet varnish doesn't get on the threads as the rod is lifted out, put a shot of that carbon dioxide or whatever it is that displaces the oxygen in the ullage above the varnish (Highland Hdwe in Hotlanta has it in their catalog) and it should last for years. And should you need to make another, stuff to do it is at Lowes, cheap. Makes a concrete garage floor kinda like a skating rink. I did get a beautiful shop floor finish out of the deal though... Chuckle... Was that your excuse to put down a wooden floor? No need now. Varnished concrete is easy to clean. ;-) And slicker than snot on a doorknob when wet... :) Mark Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene Computers are useless. They can only give you answers. -- Pablo Picasso -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Commutating Reactor
Sounds like you missed a good opportunity to become a Youtube star - at least for the technically minded. ;-) Dave On 6/5/2012 6:51 AM, John Thornton wrote: Dennis, It was all we could do to run it for 10 minutes and keep it anywhere near 1800 RPM... a real circus that was. John On 6/4/2012 1:48 PM, ceen...@in-front.com wrote: Did John run it for an hour or longer to be able to repeat the only one hour run time situation? I forgot what the capacity of the borrowed generator was to compare it to a 15HP weak leg system. Even if the generator varied in speed and voltage when loaded, one thing should be fairly certain - the phases should be 120 degrees apart. That is helpful by itself. Dennis He ran it on a Diesel generator, and it did NOT trip. So, it is SOMTHING about the power source. Jon -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Encoder discs
On 06/05/2012 10:56 AM, gene heskett wrote: The dip tube is a 1 3/4 diameter clear tube, with a removable valve threaded into a stopper. That plugs into the bottom of the tube. I'd plugged the stopper into the tube, climbed up on the step ladder and began to pour the varnish into the tube. The tube got about 3/4's full or so, and the weight of the varnish column pushed the stopper out. Big popping sound, and varnish gushing onto the floor. Guess I hadn't pushed the stopper in all the way. ;-) I think that's called Hindsight. Its always perfect. :) My problem was in thinking it blew out of the top of the tube, and I of course was looking for the cause. :( Indeed. ;-) 20-20 or better. Have you considered using a similar construction but in heavier walled PVC, with the bottom cap glued on with its drain valve, but fitted with an adapter on top that the usual square knobbed plug screws into, with a wire attached to the inside to hold and retrieve the rod with, and a hose barb screwed into the plug so you can attach a cheap refrigeration pump and pull a decent vacuum on it for 15 minutes before letting the air (or better yet, an air displacer gas to preserve the varnish) back in, and letting it sit for another hour to suck the varnish into the pores before you lift the rod out? The drain cap needs to be removable to be able to clean the inside of the tube and the valve after use.It's a very simple operation actually. The rod is set into the tube, and the drain cock is opened so that the varnish drains at the rate of about 3 - 4 per minute. Leaves a nice, even coat of thin varnish on the rod. No clue what it would do for the action feel, but it should result in a more durable rod, quite waterproof should it get dunked as the tip section is prone to be when the net is brought to hand. That's the real point behind varnishing a rod - to protect the outer surface from outside agencies - dirt, moisture, UV, and other nasty things that can harm the cane underneath the varnish. Plus, a well done finish makes the rod. Actually, with that small a surface exposed to the air, the varnish will probably store right in that tube better than if drained back into the can, just refill when it no longer covers the rod hanging from the wire. Arrange your lifting rig so the wet varnish doesn't get on the threads as the rod is lifted out, put a shot of that carbon dioxide or whatever it is that displaces the oxygen in the ullage above the varnish (Highland Hdwe in Hotlanta has it in their catalog) and it should last for years. And should you need to make another, stuff to do it is at Lowes, cheap. The varnish drains right back into the can, so storage is easy. A shot of Bloxygen at the end of the finishing session keeps the varnish from curing in the can. No need now. Varnished concrete is easy to clean. ;-) And slicker than snot on a doorknob when wet... :) If it's getting wet, I shouldn't be in the shop. ;-) Cheers, Gene Mark -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Commutating Reactor
On Tuesday, June 05, 2012 10:58:41 AM John Thornton did opine: Dennis, It was all we could do to run it for 10 minutes and keep it anywhere near 1800 RPM... a real circus that was. John The governors on a Cummins 335 we had at KXNE-TV, with a 150kw alternator on it, was much closer than that. Unloaded about 61HZ, 25% 60.3 50% 59.8, 75% 60.1, and 100% was when it fell below 59 hZ. It wasn't big enough for two klystrons at full song so we throttled the visual to about 50%, getting 58HZ out of it at that load, about 152 kw as I measured it once. Klystrons are hungry beasts, the overall efficiency to get 30kw visual and 6kw aural, meant the full song draw was around 250kw. So decent governors are out there. This one was purely mechanical but had some sort of a coil driven by the regulator rigged up that caused the midrange to be pretty smoothly maintained until full throttle was arrived at. As to being able to retrofit a good governor to a fleabay generator, I've no clue how co-operative the makers are when the unit is getting long in the tooth as I've never needed to try. Today, I'd be inclined to make it out of a UPS running one of those atom boards, running linuxcnc, driving a stepper attached to the throttle, probably at 5% of the cost of buying the makers stuff. The encoder watching a phase, the PID module doing the controls through a stepgen module, sure seems like the avenue to take to me. If a 60 hz crystal clock can be sourced, one could even phase lock to that. On 6/4/2012 1:48 PM, ceen...@in-front.com wrote: Did John run it for an hour or longer to be able to repeat the only one hour run time situation? I forgot what the capacity of the borrowed generator was to compare it to a 15HP weak leg system. Even if the generator varied in speed and voltage when loaded, one thing should be fairly certain - the phases should be 120 degrees apart. That is helpful by itself. Dennis He ran it on a Diesel generator, and it did NOT trip. So, it is SOMTHING about the power source. Jon -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene love, n.: When you like to think of someone on days that begin with a morning. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Commutating Reactor
This was just a cobbled up gen set with a diesel power unit like the kind you see pumping water in a farmers field with a generator from a river tug and a driveshaft. There was no feedback from the generator other than the DMM that the throttle man watched and tried to keep it at 240v... John On 6/5/2012 10:24 AM, gene heskett wrote: On Tuesday, June 05, 2012 10:58:41 AM John Thornton did opine: Dennis, It was all we could do to run it for 10 minutes and keep it anywhere near 1800 RPM... a real circus that was. John The governors on a Cummins 335 we had at KXNE-TV, with a 150kw alternator on it, was much closer than that. Unloaded about 61HZ, 25% 60.3 50% 59.8, 75% 60.1, and 100% was when it fell below 59 hZ. It wasn't big enough for two klystrons at full song so we throttled the visual to about 50%, getting 58HZ out of it at that load, about 152 kw as I measured it once. Klystrons are hungry beasts, the overall efficiency to get 30kw visual and 6kw aural, meant the full song draw was around 250kw. So decent governors are out there. This one was purely mechanical but had some sort of a coil driven by the regulator rigged up that caused the midrange to be pretty smoothly maintained until full throttle was arrived at. As to being able to retrofit a good governor to a fleabay generator, I've no clue how co-operative the makers are when the unit is getting long in the tooth as I've never needed to try. Today, I'd be inclined to make it out of a UPS running one of those atom boards, running linuxcnc, driving a stepper attached to the throttle, probably at 5% of the cost of buying the makers stuff. The encoder watching a phase, the PID module doing the controls through a stepgen module, sure seems like the avenue to take to me. If a 60 hz crystal clock can be sourced, one could even phase lock to that. On 6/4/2012 1:48 PM, ceen...@in-front.com wrote: Did John run it for an hour or longer to be able to repeat the only one hour run time situation? I forgot what the capacity of the borrowed generator was to compare it to a 15HP weak leg system. Even if the generator varied in speed and voltage when loaded, one thing should be fairly certain - the phases should be 120 degrees apart. That is helpful by itself. Dennis He ran it on a Diesel generator, and it did NOT trip. So, it is SOMTHING about the power source. Jon -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: and Soapbox: 3D Printer Mods?
If you have a few minutes, this is a free assessment from the US Government for evaluating intellectual property. http://www.uspto.gov/inventors/assessment/index.html ... Jack Whatever you do, work at it with all your heart... Colossians 3:23 You don't manage people; you manage things. You lead people. — Admiral Grace Hopper, USN If you are not part of the solution, you are part of the precipitate - Henry J. Tillman Anyone who has never made a mistake, has never tried anything new. - Albert Einstein -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] reading Heidenhain scale via exe650
I am having some difficulty reading a Heidenhain exe650 with a 5i20/ 7i33 combo, I can see counts in hal, but regardless of direction of motion, I only see counting in one direction. I have configured as usual for differential and other feedback is counting correctly, anyone know what I am missing. Dave -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] reading Heidenhain scale via exe650
On Tue, 5 Jun 2012, David Dyke wrote: Date: Tue, 5 Jun 2012 12:21:36 -0600 From: David Dyke d...@damik.ca Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: emc-users@lists.sourceforge.net Subject: [Emc-users] reading Heidenhain scale via exe650 I am having some difficulty reading a Heidenhain exe650 with a 5i20/ 7i33 combo, I can see counts in hal, but regardless of direction of motion, I only see counting in one direction. I have configured as usual for differential and other feedback is counting correctly, anyone know what I am missing. Dave Not sure how qaudrature can count in only one direction. Is it possible you have counter in the wrong mode (count mode should be 'false') If all else fails you can halscope the encoder signals (just figure out which GPIO bits the A and B are on, and a slow slew should get a good trace of the A,B input signals -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your ()_() signature to help him gain world domination. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] CNC Tube Bender
Under! Now that's a great idea! On Fri, May 18, 2012 at 6:26 PM, dave dengv...@charter.net wrote: On Thu, 17 May 2012 12:18:40 -0400 Kent A. Reed kentallanr...@gmail.com wrote: On 5/17/2012 6:43 AM, John Thornton wrote: Pretty impressive for DIY, too bad they don't know anything about straightening wire... those lead in rollers are totally wrong if their intention was to straighten the wire on that plane. John On 5/16/2012 10:26 PM, Kent A. Reed wrote: On 5/16/2012 7:26 PM, Kirk Wallace wrote: I wonder if this uses g-code? http://www.youtube.com/embed/yigRgG_NIyU This is very cool. Less impressive, perhaps, but still interesting is the DIY wire bender http://hackaday.com/2012/05/04/diwire-bender-makes-nearly-any-shape-imaginable/ Regards, Kent The wire bender has considerable room for improvement but it caught my eye because: Back when Lyndon Johnson was President, I earned tuition money working in office-building construction. Well, I didn't actually work; I was paid to watch others work, functioning as an extra pair of eyes and ears for the job superintendent. One of my tasks was to monitor the subcontractor laying up rebar and formwork and placing concrete (you can imagine how popular I was, still fuzzy cheeked, wearing clean jeans and an even cleaner hardhat, and carrying a notebook!). I got to spend time watching guys with strong backs bending rebar into the byzantine shapes and cages called out in the construction drawings. I understand there's a fair amount of automation now in the straightening, cutting, and bending of rebar. Another John Henry story. Regards, Kent AH, yes, those stories about when we were young. .. In '87, I built a house. Order custom rebar, hauled some of the long pieces home slung under the pickup... with flags. ;-) Poured concrete at 2.5 slump, plasticized to 6. 30 day strength was about 5K. Dave -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Commutating Reactor
On Tuesday, June 05, 2012 04:22:05 PM John Thornton did opine: This was just a cobbled up gen set with a diesel power unit like the kind you see pumping water in a farmers field with a generator from a river tug and a driveshaft. There was no feedback from the generator other than the DMM that the throttle man watched and tried to keep it at 240v... John That is not normally the throttle mans job, to maintain 240 volts, that is the regulators job, a relatively easy one since its main load as a control was the exciter current being fed to the slip rings of the rotating field. Or it was in this rig at any rate. That one, having a hand throttle, would be an excellent candidate for an arduino running some PID sw, driving a stepper motor to stabilize its speed. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene Q: What do you call the scratches that you get when a female sheep bites you? A: Ewe nicks. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] reading Heidenhain scale via exe650
On Tuesday, June 05, 2012 04:34:32 PM David Dyke did opine: I am having some difficulty reading a Heidenhain exe650 with a 5i20/ 7i33 combo, I can see counts in hal, but regardless of direction of motion, I only see counting in one direction. I have configured as usual for differential and other feedback is counting correctly, anyone know what I am missing. Dave In order to be able to determine the direction, the input signalS must have an A B phase in some phase progression that reverses when the direction reverses. Do you have that condition, verified by a dual trace oscilloscope? Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene Do you guys know what you're doing, or are you just hacking? -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Commutating Reactor
On 6/5/2012 4:32 PM, gene heskett wrote: On Tuesday, June 05, 2012 04:22:05 PM John Thornton did opine: This was just a cobbled up gen set with a diesel power unit like the kind you see pumping water in a farmers field with a generator from a river tug and a driveshaft. There was no feedback from the generator other than the DMM that the throttle man watched and tried to keep it at 240v... John That is not normally the throttle mans job, to maintain 240 volts, that is the regulators job, a relatively easy one since its main load as a control was the exciter current being fed to the slip rings of the rotating field. Or it was in this rig at any rate. That one, having a hand throttle, would be an excellent candidate for an arduino running some PID sw, driving a stepper motor to stabilize its speed. Cheers, Gene Yep, sounds like it was a jury rig setup at best.But you do what you need The 55 KW natural gas generator I have has a mechanical governor for the speed (hz) and a voltage regulator system in the control box. It seems to work well. No fancy newfangled CPUs or anything. ;-) Dave -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] reading Heidenhain scale via exe650
On Tue, 5 Jun 2012 16:39:52 -0400 gene heskett ghesk...@wdtv.com wrote: On Tuesday, June 05, 2012 04:34:32 PM David Dyke did opine: I am having some difficulty reading a Heidenhain exe650 with a 5i20/ 7i33 combo, I can see counts in hal, but regardless of direction of motion, I only see counting in one direction. I have configured as usual for differential and other feedback is counting correctly, anyone know what I am missing. Dave In order to be able to determine the direction, the input signalS must have an A B phase in some phase progression that reverses when the direction reverses. Do you have that condition, verified by a dual trace oscilloscope? Cheers, Gene I'm with Gene, somehow you are not getting both A and B signals thru hal and into the board. My guess is you can disconnect A and test and then reconnect A and disconnect B. One of them won't make any difference and that is where you look for a problem. Since that can be done in hal it is pretty painless, well as painless as troubleshooting can be. ;-) Good luck. Dave -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Work Coordinates
How can I see, what the numbers for the work offsets are and which work offset I am using? For example, I can see the the tool offset values in HAL with motion.tooloffset.x, I would like to display on a Glade side panel - which work offset is being used and what the values are. Is this possible? -- Brian May www.do-precision.com -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
