Re: [Emc-users] web server, apache2 in your wheezy disk
On Sat, Feb 7, 2015 at 12:23 PM, Gene Heskett ghesk...@wdtv.com wrote: On Saturday, February 07, 2015 08:14:50 AM Mark Wendt wrote: On Thu, Feb 5, 2015 at 8:23 PM, Gene Heskett ghesk...@wdtv.com wrote: greetings guys; I have now installed just about the whole thing with an apache2 in its name. Without finding the launching scripts that were in /etc/init.d in the 10.04.4 LTS install. Has systemd struck and its all been moved? If so, where are the launching and control files now? Thanks. Cheers, Gene Heskett service httpd start|stop|restart # As a privileged or sudo user Files are usually located in /etc/httpd/conf Thanks Mark. Those I found and transplanted, as was the script in /etc/init.d But I find it odd that the synaptic install of apache2 did not install these startup scripts. Next I'd imagine, since it will not be automatically started at boot time, is to locate and transplant the apach2 links in all the /etc/rc.# directories. Done, so apache2 ought to be restarted early in the init sequence now. Or killed as the case might be. Now I have to do a search of all this cache of email here and see if I can find a reference to the F10 key, its tied to a close window requester poppup that to me is fully equivalent to the tits on a boar hog in uselessness. Now I hit F10 to exit mc and have to use 3 more mouse clicks to quit it, when dammit if I din't intend to quit mc, I never would have pushed the F10 key. If I knew which genius did that, I'd tighten his head onto his neck about 3 more turns! 10.04.4 LTS had a config file option that made shutting that off a piece of no sugar added cake, but I cannot find it in these wheezy based menu's. Gr. Cheers, Gene Heskett Gene, The trend in Unix and Linux is to get away from the startup scripts in the rc directories and go to, if I remember right, upstart to kick off the services. If you look in /etc/init there are a bunch of conf files used by upstart to start, stop and manage the services running at your runlevel. A # service --status-all will show you all the service processes running. If you want a certain service, such as httpd to run at whatever runlevel you want, you use 'chkconfig to see if it's already running, to set what runlevels you want it to run at or to disable the service. Mark -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
Thanks John. Never have seen the Leadshine drivers. I'll take a look. On 2/8/2015 12:16 PM, John Alexander Stewart wrote: Dean; Personally - my location makes my situation different than yours. I have 3 CNC builds - two with Gecko 540s, one with Leadshine stepper drivers ordered from China. Ok - of the Gecko G540 machines; one is Mesa 5i25 driven, the other is software stepping. The 5i25/G540 really works VERY well. It did take a bit of asking questions to get the HAL files ok, but chalk that one up to learning. The Leadshine drivers (with Mesa 5i25/7i76) is very good. The stepper motors are quiet, while the G540 driven steppers have a strange white noise/humming on both machines when idle. This machine appears to be the way to go. I lost a G540 driver earlier this week; on the A axis on a lathe that had only the X and Z axes wired in. Ie, there was no load on it, but it smoked anyway. I don't know if I'll bother ordering a replacement driver module for it. The G540 has a max input voltage of something around 48v, while the Leadshine drivers I got go up to, I believe, 80volts but check. If correct it means you can keep your original power supply. My location situation? Being in Canada, while I want to support my brothers/sisters in the USA, it's cheaper to order in from China, especially with the recent devaluation of the Canadian dollar. You may find that the Leadshine stepper drivers are actually name-badged from the old Keiling site - AutomationDirect, I think it is called now. Hope this helps. -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
Hi Jon: Thanks for the input. I guess I had two things that I wondered about when I was considering this. What, if anything special, am I getting in the big name industrial drive from Parker that I can't get from a lower priced Gecko or Leadshine? And is it worth the money. And second, are there any performance issues in mixing drive components, say Parker and Gecko? On 2/8/2015 12:25 PM, Jon Elson wrote: On 02/08/2015 10:40 AM, Dean Posekany wrote: Here's my question for the worldly experience of the group. I'm retired and this is a serious hobby machine and I don't have a great deal of money that I can throw that this. So when the inevitable failure of the next stepper driver occurs, what would you do? Repair the OEM750 (~$280)? Or would you look at replacing the Parker hardware with something else like Gecko or maybe go the Mesa route? I've really been pleased with the stepper performance I get from the Parkers and the software stepper generation that Linuxcnc gives me is more than fast enough for the work I do. The repair is expensive and the drives were released in 1997. So they're 18 years old. I just don't have enough real world experience with this stuff to feel like I can make a good decision. Well, A Gecko 203 is less than HALF the price of your Parker REPAIR, and meets the 7.5 A 75 V spec, too. Seems like a no brainer to me! I used the Gecko 201 in some old projects, and they were VERY good. The reason I do not make stepper drives is because the Gecko is so good, I'd never come close. It should be very easy to drop in Geckos as the Parker drives fail, or just swap them all at once. Jon -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
On 2/8/2015 11:40 AM, Dean Posekany wrote: A little background : About six years ago, as I was just starting to design my shop-built gantry machine, I came across a SUPER deal on Ebay for six sets of drive components. Each set included a line filter, Parker OEM300 75V, 7.5A power supply, Parker OEM750 stepper driver and a stepper motor. I didn't know a whole lot about this stuff a the time, but I knew it was a deal I couldn't pass up. So, they became the drive system for my CNC build. As it turned out, only five of the six drivers worked. Thas wasn't a problem (especially for what I'd paid for them) because my gantry is only (at least for now) a 3-axis machine. But, six years later I've lost two additional OEM750's and I'm now running on my last three. Another failure and I'm down and its decision time. Here's my question for the worldly experience of the group. I'm retired and this is a serious hobby machine and I don't have a great deal of money that I can throw that this. So when the inevitable failure of the next stepper driver occurs, what would you do? Repair the OEM750 (~$280)? Or would you look at replacing the Parker hardware with something else like Gecko or maybe go the Mesa route? I've really been pleased with the stepper performance I get from the Parkers and the software stepper generation that Linuxcnc gives me is more than fast enough for the work I do. The repair is expensive and the drives were released in 1997. So they're 18 years old. I just don't have enough real world experience with this stuff to feel like I can make a good decision. If it was your problem, what direction would you go? Thanks in advance for your thoughts. Dean Dean, I've got a stack of Parker OEM750 drives here. A couple of them are new, unused. I've used them and they seem to be very good drives.I haven't had any failures. I've got three running old Bridgeport Stepper motors without problems. I think that Parker is still selling them. http://www.parkermotion.com/products/Stepper_Drives_and_Motors__4003__30_32_80_567_29.html I'm wondering why they are failing on you? Do you have the drives heat sinked?The back of the drives are smooth aluminum and are designed to be heatsinked to a backplane or the heatsink that Parker sold (use heat sink compound). If you break the drive to motor electrical connection while the motors are energized that will oftentimes kill the stepper drive. I would not pay $280 to have those drives repaired. Jon is right, the Geckos offer similar performance for less. The Parker drives show up on Ebay periodically for reasonable and unreasonable prices. At one time Parker was selling these drives for about $750 each. But I think that Gecko and Leadshine has been tough competition for Parker. I've used the Gecko 203V drives myself and have used them on industrial machines. But the Geckos need to be heatsinked as well. You can run with mixed Parker/Gecko drives on your machine. The machine won't care. I use the same timing parameters for the Geckos as I do the Parker 750's. Dave --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
On Sunday, February 08, 2015 11:40:19 AM Dean Posekany wrote: A little background : About six years ago, as I was just starting to design my shop-built gantry machine, I came across a SUPER deal on Ebay for six sets of drive components. Each set included a line filter, Parker OEM300 75V, 7.5A power supply, Parker OEM750 stepper driver and a stepper motor. I didn't know a whole lot about this stuff a the time, but I knew it was a deal I couldn't pass up. So, they became the drive system for my CNC build. As it turned out, only five of the six drivers worked. Thas wasn't a problem (especially for what I'd paid for them) because my gantry is only (at least for now) a 3-axis machine. But, six years later I've lost two additional OEM750's and I'm now running on my last three. Another failure and I'm down and its decision time. Here's my question for the worldly experience of the group. I'm retired and this is a serious hobby machine and I don't have a great deal of money that I can throw that this. So when the inevitable failure of the next stepper driver occurs, what would you do? Repair the OEM750 (~$280)? Or would you look at replacing the Parker hardware with something else like Gecko or maybe go the Mesa route? I've really been pleased with the stepper performance I get from the Parkers and the software stepper generation that Linuxcnc gives me is more than fast enough for the work I do. The repair is expensive and the drives were released in 1997. So they're 18 years old. I just don't have enough real world experience with this stuff to feel like I can make a good decision. If it was your problem, what direction would you go? Thanks in advance for your thoughts. Dean Stepper Electronics 101 is in session. ;-) Drive designs and dependability have come a long long way since 1997. I personally have 6 of the 2M542 drivers running my stuff and they seem to be bulletproof, withstanding motor shorts or opens by responding with an instant shut down that you must power cycle them to recover from. These drives have a big brother, for not too much more money, rated at 80 volts and 6+ amps to the motors. There will be an 860 in the part number for those drives. I am running my lathe, an early early 7x12 with a 1 hp spindle motor, with a 425oz nema 23 geared down 2/1 on the carriage screw, now a now 16mmx5 ball screw, and a 262 oz on the rear of the carriage, direct drive to a small ball screw to run the y. All this running on a surplus tranny/rectifier and a couple 10,000 uf caps caps putting out about 37 to 38 volts. Rock solid and 60+ ipm on the Z. My mill was the first conversion, an X1 with the LMS big table kit, but only a 28 volt supply so its not super dependable north of 10 ipm. Power supplies in the 40 to 50 volt range are hard to find and I wound up buying a 5 pack of 48 volt, 3.3 amp switchers off ebay for a $95 bill, all will be paralleled thru .5 ohm wirewound resistors to insure enough load sharing that the overcurrents will not easily cascade. Tested laying on the table with one 425 oz 8 wire motor wired series so it runs on about 2.5 amps, and driving my spare 2M542 driver with a function generator, I can get, with lots of torque, better than 2000 revs, and did see over 3500 several times before it locked. That speed also disclosed that the opto-isolators in the 2m542 inputs weren't all that fast as it was quite sensitive to the applied duty cycle. That was a bit north of 375 kilohertz from the generator with the drive set at /8 microstepping. For your bigger setup, this looks like the best deal on ebay ATM: http://www.ebay.com/itm/DM860-2-4-phase-Nema34-Stepper-motor-driver-256micsteps-7-8A-24-50VDC- CE-/251522680246?pt=LH_DefaultDomain_0hash=item3a8feb85b6 He has 7 left ATM. And despite his claim of a 50 volt rating, all the other DM860's listed are rated at 80 volts. Immediately above that listing is a 3 pack of them for $159. Rated at 80 volts. Typo? Check with the vendor to be sure they aren't 2nds or? And I see suitable 60 volt power supplies, use one per motor, at similar prices. But I expect your 70 volt Parkers are not switchers but analog, and barring transformer failures, are fixable on your own workbench. At their age, I would replace all the electrolytic caps in them if there is any problem. If you have an oscilloscope, bad/old caps will be obvious because of the 20 volt or more noise spikes from the motor drivers at the supply outputs. A digital DVM may not show that noise as its way to high a frequency to register on a DVM. Their AC voltage ranges loose any semblance of accuracy when the AC they are measuring is not 50 to 60 Hz. And the comment goes triple for any DVM claiming to be RMS accurate, that log amplifier that does that is very slow. So the HF noise is ignored. Yes, I am a Certified Electronics Technician. And I like to teach. And being both 80 yo, and long retired myself, I do consider the
[Emc-users] What Would You Do?
A little background : About six years ago, as I was just starting to design my shop-built gantry machine, I came across a SUPER deal on Ebay for six sets of drive components. Each set included a line filter, Parker OEM300 75V, 7.5A power supply, Parker OEM750 stepper driver and a stepper motor. I didn't know a whole lot about this stuff a the time, but I knew it was a deal I couldn't pass up. So, they became the drive system for my CNC build. As it turned out, only five of the six drivers worked. Thas wasn't a problem (especially for what I'd paid for them) because my gantry is only (at least for now) a 3-axis machine. But, six years later I've lost two additional OEM750's and I'm now running on my last three. Another failure and I'm down and its decision time. Here's my question for the worldly experience of the group. I'm retired and this is a serious hobby machine and I don't have a great deal of money that I can throw that this. So when the inevitable failure of the next stepper driver occurs, what would you do? Repair the OEM750 (~$280)? Or would you look at replacing the Parker hardware with something else like Gecko or maybe go the Mesa route? I've really been pleased with the stepper performance I get from the Parkers and the software stepper generation that Linuxcnc gives me is more than fast enough for the work I do. The repair is expensive and the drives were released in 1997. So they're 18 years old. I just don't have enough real world experience with this stuff to feel like I can make a good decision. If it was your problem, what direction would you go? Thanks in advance for your thoughts. Dean -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
My old Starturn lathe came with a smaller drive that failed, the repair was about £4 for a chip, it can be very cheap to do your own drive repair. Dave On 08/02/2015, Jon Elson el...@pico-systems.com wrote: On 02/08/2015 10:40 AM, Dean Posekany wrote: Here's my question for the worldly experience of the group. I'm retired and this is a serious hobby machine and I don't have a great deal of money that I can throw that this. So when the inevitable failure of the next stepper driver occurs, what would you do? Repair the OEM750 (~$280)? Or would you look at replacing the Parker hardware with something else like Gecko or maybe go the Mesa route? I've really been pleased with the stepper performance I get from the Parkers and the software stepper generation that Linuxcnc gives me is more than fast enough for the work I do. The repair is expensive and the drives were released in 1997. So they're 18 years old. I just don't have enough real world experience with this stuff to feel like I can make a good decision. Well, A Gecko 203 is less than HALF the price of your Parker REPAIR, and meets the 7.5 A 75 V spec, too. Seems like a no brainer to me! I used the Gecko 201 in some old projects, and they were VERY good. The reason I do not make stepper drives is because the Gecko is so good, I'd never come close. It should be very easy to drop in Geckos as the Parker drives fail, or just swap them all at once. Jon -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
Dave: That crossed my mind and I've done some SMD board repair before. I've spent the past two days searching for repair info on these drives and have come up empty. I've got no clue as to where to start on these as far as repair goes. On 2/8/2015 12:39 PM, Dave Caroline wrote: My old Starturn lathe came with a smaller drive that failed, the repair was about £4 for a chip, it can be very cheap to do your own drive repair. Dave On 08/02/2015, Jon Elson el...@pico-systems.com wrote: On 02/08/2015 10:40 AM, Dean Posekany wrote: Here's my question for the worldly experience of the group. I'm retired and this is a serious hobby machine and I don't have a great deal of money that I can throw that this. So when the inevitable failure of the next stepper driver occurs, what would you do? Repair the OEM750 (~$280)? Or would you look at replacing the Parker hardware with something else like Gecko or maybe go the Mesa route? I've really been pleased with the stepper performance I get from the Parkers and the software stepper generation that Linuxcnc gives me is more than fast enough for the work I do. The repair is expensive and the drives were released in 1997. So they're 18 years old. I just don't have enough real world experience with this stuff to feel like I can make a good decision. Well, A Gecko 203 is less than HALF the price of your Parker REPAIR, and meets the 7.5 A 75 V spec, too. Seems like a no brainer to me! I used the Gecko 201 in some old projects, and they were VERY good. The reason I do not make stepper drives is because the Gecko is so good, I'd never come close. It should be very easy to drop in Geckos as the Parker drives fail, or just swap them all at once. Jon -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
Dean; Personally - my location makes my situation different than yours. I have 3 CNC builds - two with Gecko 540s, one with Leadshine stepper drivers ordered from China. Ok - of the Gecko G540 machines; one is Mesa 5i25 driven, the other is software stepping. The 5i25/G540 really works VERY well. It did take a bit of asking questions to get the HAL files ok, but chalk that one up to learning. The Leadshine drivers (with Mesa 5i25/7i76) is very good. The stepper motors are quiet, while the G540 driven steppers have a strange white noise/humming on both machines when idle. This machine appears to be the way to go. I lost a G540 driver earlier this week; on the A axis on a lathe that had only the X and Z axes wired in. Ie, there was no load on it, but it smoked anyway. I don't know if I'll bother ordering a replacement driver module for it. The G540 has a max input voltage of something around 48v, while the Leadshine drivers I got go up to, I believe, 80volts but check. If correct it means you can keep your original power supply. My location situation? Being in Canada, while I want to support my brothers/sisters in the USA, it's cheaper to order in from China, especially with the recent devaluation of the Canadian dollar. You may find that the Leadshine stepper drivers are actually name-badged from the old Keiling site - AutomationDirect, I think it is called now. Hope this helps. -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
On 02/08/2015 10:40 AM, Dean Posekany wrote: Here's my question for the worldly experience of the group. I'm retired and this is a serious hobby machine and I don't have a great deal of money that I can throw that this. So when the inevitable failure of the next stepper driver occurs, what would you do? Repair the OEM750 (~$280)? Or would you look at replacing the Parker hardware with something else like Gecko or maybe go the Mesa route? I've really been pleased with the stepper performance I get from the Parkers and the software stepper generation that Linuxcnc gives me is more than fast enough for the work I do. The repair is expensive and the drives were released in 1997. So they're 18 years old. I just don't have enough real world experience with this stuff to feel like I can make a good decision. Well, A Gecko 203 is less than HALF the price of your Parker REPAIR, and meets the 7.5 A 75 V spec, too. Seems like a no brainer to me! I used the Gecko 201 in some old projects, and they were VERY good. The reason I do not make stepper drives is because the Gecko is so good, I'd never come close. It should be very easy to drop in Geckos as the Parker drives fail, or just swap them all at once. Jon -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] web server, apache2 in your wheezy disk
On Sunday, February 08, 2015 08:19:10 AM Mark Wendt wrote: On Sat, Feb 7, 2015 at 12:23 PM, Gene Heskett ghesk...@wdtv.com wrote: On Saturday, February 07, 2015 08:14:50 AM Mark Wendt wrote: On Thu, Feb 5, 2015 at 8:23 PM, Gene Heskett ghesk...@wdtv.com wrote: greetings guys; I have now installed just about the whole thing with an apache2 in its name. Without finding the launching scripts that were in /etc/init.d in the 10.04.4 LTS install. Has systemd struck and its all been moved? If so, where are the launching and control files now? Thanks. Cheers, Gene Heskett service httpd start|stop|restart # As a privileged or sudo user Files are usually located in /etc/httpd/conf Thanks Mark. Those I found and transplanted, as was the script in /etc/init.d But I find it odd that the synaptic install of apache2 did not install these startup scripts. Next I'd imagine, since it will not be automatically started at boot time, is to locate and transplant the apach2 links in all the /etc/rc.# directories. Done, so apache2 ought to be restarted early in the init sequence now. Or killed as the case might be. Now I have to do a search of all this cache of email here and see if I can find a reference to the F10 key, its tied to a close window requester poppup that to me is fully equivalent to the tits on a boar hog in uselessness. Now I hit F10 to exit mc and have to use 3 more mouse clicks to quit it, when dammit if I din't intend to quit mc, I never would have pushed the F10 key. If I knew which genius did that, I'd tighten his head onto his neck about 3 more turns! 10.04.4 LTS had a config file option that made shutting that off a piece of no sugar added cake, but I cannot find it in these wheezy based menu's. Gr. Cheers, Gene Heskett Gene, The trend in Unix and Linux is to get away from the startup scripts in the rc directories and go to, if I remember right, upstart to kick off the services. If you look in /etc/init there are a bunch of conf files used by upstart to start, stop and manage the services running at your runlevel. I am aware of that, but it apparently hasn't yet invaded debian, wheezy (debian 7.8) doesn't even install it. A # service --status-all will show you all the service processes running. If you want a certain service, such as httpd to run at whatever runlevel you want, you use 'chkconfig to see if it's already running, to set what runlevels you want it to run at or to disable the service. And chkconfig ?? -bash: chkconfig: command not found root@coyote:/home/amanda/amanda-3.3.6# locate chkconfig /mnt/ltsslash/etc/bash_completion.d/chkconfig /mnt/ltsslash/sbin/chkconfig /mnt/ltsslash/usr/share/doc/chkconfig /mnt/ltsslash/usr/share/doc/chkconfig/changelog.Debian.gz /mnt/ltsslash/usr/share/doc/chkconfig/copyright /mnt/ltsslash/usr/share/man/man8/chkconfig.8.gz /mnt/ltsslash/usr/share/zsh/functions/Completion/Unix/_chkconfig /mnt/ltsslash/var/lib/dpkg/info/chkconfig.list /mnt/ltsslash/var/lib/dpkg/info/chkconfig.md5sums /usr/share/bash-completion/completions/chkconfig /mnt/ltsslash is the old, now read-only drive. Calling up synaptic, chkconfig was not included in the default install, but is now installed. Strange indeed, chkconfig should be part of any base install, and there is oodles of room in the dvd image. And there is obviously something else on the missing list. I am trying to build amanda, the backup program and get it to install here. But most of my configure options are being miss-set or just plain ignored by configure, so its building duff executables that aren't even owner:group correct, and looking for its support files just as if I had set --prefix=/usr, when the driver scripts says /usr/local. I've got more miss-fires than a gatling gun with a broken firing pin! This install seems stable, but it is being a cast iron bitch at the same time. Its the hybrid.iso for wheezy from linuxcnc.org, now with an rt- preempt-686-pae kernel installed and running. I just now posted the nearly 2 megabyte config.log to the amanda-users list, hoping someone can put 33 together and come up with the next clue. Thanks Mark Cheers, Gene Heskett -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) Genes Web page http://geneslinuxbox.net:6309/gene US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now.
Re: [Emc-users] What Would You Do?
On 2/8/2015 2:01 PM, Gene Heskett wrote: Yes, I am a Certified Electronics Technician. And I like to teach. And being both 80 yo, and long retired myself, I do consider the costs in the long view if I can. Thanks Gene. I'm a loong way from an electronics technician. So, if you're willing to teach, I'm certainly willing to listen. They will be happier, with the drivers running cooler, and the motors may have much better high speed torque when those caps are big enough and fresh. Be aware that some switching supplies are not at all happy driving a stepper due to the high recirculating currents causing what the switcher thinks is an overvoltage, tripping it off, so its recommended by great-grandpa Gene here, to isolate the switcher from the load a wee bit with a small power resistor, .5 ohms or less, and a large, low ESR capacitor which will serve as the recycle currant container for most of the voltage spikes that are part and parcel of todays stepper drivers. I agree with your earlier thought. I don't think these are switching supplies. All of my drivers are looking at 10,000 uf or more at their input terminals, and the switchers then seem to behave well with the extra cap to gobble up much of that noise. Cheers, Gene Heskett -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] video
On 02/08/2015 01:02 PM, Stuart Stevenson wrote: When you want 5 axis verification your choices are severely limited and very expensive. Oops. I forgot about your axes super powers. It seems to be on OpenSCAM's list: Future Plans Many features are planed for the future of OpenSCAM. Much of this depends on the availability of developer time and funding. Here are some of the current ideas: Real-time cutting simulation. Rotational axis simulation. 5-axis simulation. ... So it still might be a good starting point. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
On 2/8/2015 2:16 PM, Kirk Wallace wrote: On 02/08/2015 10:11 AM, Dave Cole wrote: ... snip I'm wondering why they are failing on you? Do you have the drives heat sinked?The back of the drives are smooth aluminum and are designed to be heatsinked to a backplane or the heatsink that Parker sold (use heat sink compound). If you break the drive to motor electrical connection while the motors are energized that will oftentimes kill the stepper drive. I would not pay $280 to have those drives repaired. Jon is right, the Geckos offer similar performance for less. This may or may not apply but, I blew out some of my very old unipolar drives recently. So far, my guess is that the problem might come about when I power up the drives. I have a mains relay that energizes with the e-stop button release. I think the problem is that the drives are always enabled and are in a confused state when the power comes on. I haven't taken the time to investigate this, but it might be worth considering. These drives use a relatively low frequency PWM to limit current and make a significant amount of noise. Newer drives can use newer technology and components to run the PWM at higher frequency. I got a Leadshine'ish (MA860H from eBay) drive to replace one of my blown out drives and the current limit is silent, meaning the frequency is probably above 10kHz. I suppose young'ns may be able to here it. So, it might be worth making sure the drives are not enabled until the power has stabilized. Also, as a relay opens or closes, there might be damaging voltage spikes. Plus, power input filers are usually a good thing to add in front of PWM type drives and VFDs to help reduce electrical noise but may also provide some protection. Kirk, I think this is a problem with my set-up. Every time I power up my system, I hear the steppers lock up. Stupid question time: How would one do this? Currently I have a switched feed that feeds --line filters---power supplies---drivers. Would I need to put a switch between each PS and driver? -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
On 02/08/2015 01:19 PM, Dean Posekany wrote: ... snip Stupid question time: How would one do this? Currently I have a switched feed that feeds --line filters---power supplies---drivers. Would I need to put a switch between each PS and driver? On my mill, I think I should have linked the drive enables to AXIS' machine-on button. This way, when AXIS first comes up, I press e-stop, which powers up the drives through the mains relay, then press the machine-on button which turns the enables on (which currently are on when LinuxCNC loads). It should be easy to check, but I haven't gotten round to it. One down side is that the transistors on my drives blow out before the fuses and I have to replace them every time I test. The traces have started to pull up so replacing transistors is a bit of a project, and I don't see much point in beating a dying horse. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
On 02/08/2015 11:16 AM, Kirk Wallace wrote: ... snip technology and components to run the PWM at higher frequency. I got a Leadshine'ish (MA860H from eBay) drive to replace one of my blown out drives and the current limit is silent, meaning the frequency is probably above 10kHz. I suppose young'ns may be able to here it. ... snip By the way, I have a couple MA860H pictures here: http://wallacecompany.com/ma860h/ This is the vendor: http://www.ebay.com/itm/331393094727 (They shipped it right away, but it took a few weeks to be delivered) It is driving an old NEMA 42 motor with a 75 VAC power input, set to 1/4 stepping, from the parallel port with about 80 IPM maximum speed on this machine: http://www.wallacecompany.com/machine_shop/Shizuoka/ -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
On 02/08/2015 11:40 AM, Dean Posekany wrote: Hi Jon: Thanks for the input. I guess I had two things that I wondered about when I was considering this. What, if anything special, am I getting in the big name industrial drive from Parker that I can't get from a lower priced Gecko or Leadshine? Ummm, maybe nothing??!! The Parkers are failing on you, that ought to be an indication SOMETHING in their design is poor. I think the Leadshines, at least maybe the first ones, were blatant ripoffs of the Gecko drive. And is it worth the money. And second, are there any performance issues in mixing drive components, say Parker and Gecko? Very unlikely to be any performance issues in mining drives, except that your Parkers may fail faster as the last few get older. Really, the only issue is to make sure the source of the step/direction signals has enough drive for the Gecko's opto-isolated inputs. I think the new ones require much less drive than their first models. Jon -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] video
Guys, I just watched a video on C++. https://www.youtube.com/watch?v=Rub-JsjMhWY Reading the comments I saw a name 'Moronicsmurf' refer to LinuxCNC. Is this someone we know? If we don't, we should get to know him. Looks as if he understands LinuxCNC very well. I found this because I am trying to find the best way to build a gcode verification application. I want to translate the gcode to OpenSCAD instructions so I can remove the material described by the gcode motion from a solid model imported into OpenSCAD. What would anyone suggest is the best application to do the translation? thanks Stuart -- Addressee is the intended audience. If you are not the addressee then my consent is not given for you to read this email furthermore it is my wish you would close this without saving or reading, and cease and desist from saving or opening my private correspondence. Thank you for honoring my wish. -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] video
On 8 February 2015 at 20:41, Kirk Wallace kwall...@wallacecompany.com wrote: I found this because I am trying to find the best way to build a gcode verification application. I want to translate the gcode to OpenSCAD instructions so I can remove the material described by the gcode motion from a solid model imported into OpenSCAD. There are existing software packages that do that. Is this a wheel than needs to be reinvented? http://www.cutviewer.com is one I know of. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] video
He'll Andy there have been software/hardware packages control motion for a few decades. Reinventing the wheel seems to be the usual MO around here. :) On Feb 8, 2015 3:00 PM, andy pugh bodge...@gmail.com wrote: On 8 February 2015 at 20:41, Kirk Wallace kwall...@wallacecompany.com wrote: I found this because I am trying to find the best way to build a gcode verification application. I want to translate the gcode to OpenSCAD instructions so I can remove the material described by the gcode motion from a solid model imported into OpenSCAD. There are existing software packages that do that. Is this a wheel than needs to be reinvented? http://www.cutviewer.com is one I know of. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
On 02/08/2015 10:11 AM, Dave Cole wrote: ... snip I'm wondering why they are failing on you? Do you have the drives heat sinked?The back of the drives are smooth aluminum and are designed to be heatsinked to a backplane or the heatsink that Parker sold (use heat sink compound). If you break the drive to motor electrical connection while the motors are energized that will oftentimes kill the stepper drive. I would not pay $280 to have those drives repaired. Jon is right, the Geckos offer similar performance for less. This may or may not apply but, I blew out some of my very old unipolar drives recently. So far, my guess is that the problem might come about when I power up the drives. I have a mains relay that energizes with the e-stop button release. I think the problem is that the drives are always enabled and are in a confused state when the power comes on. I haven't taken the time to investigate this, but it might be worth considering. These drives use a relatively low frequency PWM to limit current and make a significant amount of noise. Newer drives can use newer technology and components to run the PWM at higher frequency. I got a Leadshine'ish (MA860H from eBay) drive to replace one of my blown out drives and the current limit is silent, meaning the frequency is probably above 10kHz. I suppose young'ns may be able to here it. So, it might be worth making sure the drives are not enabled until the power has stabilized. Also, as a relay opens or closes, there might be damaging voltage spikes. Plus, power input filers are usually a good thing to add in front of PWM type drives and VFDs to help reduce electrical noise but may also provide some protection. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] video
On 02/08/2015 12:12 PM, Stuart Stevenson wrote: Guys, I just watched a video on C++. https://www.youtube.com/watch?v=Rub-JsjMhWY Reading the comments I saw a name 'Moronicsmurf' refer to LinuxCNC. Is this someone we know? If we don't, we should get to know him. Looks as if he understands LinuxCNC very well. I found this because I am trying to find the best way to build a gcode verification application. I want to translate the gcode to OpenSCAD instructions so I can remove the material described by the gcode motion from a solid model imported into OpenSCAD. What would anyone suggest is the best application to do the translation? thanks Stuart I found this recently: http://openscam.com/ -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] video
When you want 5 axis verification your choices are severely limited and very expensive. On Feb 8, 2015 3:00 PM, andy pugh bodge...@gmail.com wrote: On 8 February 2015 at 20:41, Kirk Wallace kwall...@wallacecompany.com wrote: I found this because I am trying to find the best way to build a gcode verification application. I want to translate the gcode to OpenSCAD instructions so I can remove the material described by the gcode motion from a solid model imported into OpenSCAD. There are existing software packages that do that. Is this a wheel than needs to be reinvented? http://www.cutviewer.com is one I know of. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
On 2/8/2015 1:11 PM, Dave Cole wrote: I'm wondering why they are failing on you? Do you have the drives heat sinked?The back of the drives are smooth aluminum and are designed to be heatsinked to a backplane or the heatsink that Parker sold (use heat sink compound). Hi Dave: Yea, I have the drives heat sinked to a 1/4 alum backplane with compound and have the backplane fan-cooled. I've never noticed the backplane even being warm to the touch. As far as whywell this last one was partly my fault. But I'm surprised that the Parker didn't have some built in protection. I had just built and was testing a new Linuxcnc box based on an oldHP Compaq DC7600 Pentium 4. Along with the new build I added code to do the touch-off plate. Well, being careless while I was testing, I ended driving the Y-axis to its neg stop. Once I unstuck the axis, the drive was toast and just sat there and vibrated the axis. DUMB! The other failure was about two years ago and it just didn't wake up when I started the machine that day. If you break the drive to motor electrical connection while the motors are energized that will oftentimes kill the stepper drive. I would not pay $280 to have those drives repaired. Jon is right, the Geckos offer similar performance for less. The Parker drives show up on Ebay periodically for reasonable and unreasonable prices. At one time Parker was selling these drives for about $750 each. But I think that Gecko and Leadshine has been tough competition for Parker. I've used the Gecko 203V drives myself and have used them on industrial machines. But the Geckos need to be heatsinked as well. You can run with mixed Parker/Gecko drives on your machine. The machine won't care. I use the same timing parameters for the Geckos as I do the Parker 750's. Dave --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
On 2/8/2015 12:01 PM, Gene Heskett wrote: If you have an oscilloscope, bad/old caps will be obvious because of the 20 volt or more noise spikes from the motor drivers at the supply outputs. I'd open them up and have a look at the capacitors for bulging and leaking. 1997 is in the capacitor plague years when a huge load of counterfeit electrolytic capacitors were on the market and just about every company making electronics stuff ended up with some. Best case is the capacitors can all be replaced and the motor driver, computer, stereo etc will be back in working order. Worst case is the capacitors going off caused improper voltage or current to flow here and there, frying other parts. Or some times the capacitors would short (frying other parts) or even explode. --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What Would You Do?
Hi Dean, I've been using imported stepper motors and drivers (the type you find cheap on eBay) and have been very happy with them. They have generally much more robust designs than the older high dollar industrial controls, and they're much smarter. The new stepper motor controllers have microcontrollers with more complicated algorithms that not only implement some of the design robustness, but also other nice features such as the aforementioned quieter operation. You might also see faster acceleration and/or faster max speed step generation without missing steps. Whether using servos or stepper motors, a good case can usually be made for buying an old machine, stripping 15+ year old CNC electronics and installing new electronics. Add LinuxCNC and it's an easy way to upgrade a good old machine (good iron) to be much better than it was when new. Upgrading electronics is an obvious choice when the old electronics have already failed and are prohibitively expensive to replace, but I think it's a worthwhile investment in longterm reliability even if the old electronics are still working... for now. If you want to be proactive on the remaining Parker drives, sight unseen, I'd generally recommend opening them up, cleaning the printed circuit boards, and replacing the electrolytic capacitors. Those are the components most susceptible to age related failure. If you want to attempt an inexpensive rebuild of your old Parker drives without being an electrical engineer, I'd replace all of the electrolytic capacitors and then replace any semiconductors that are charred. :-) Typical damage occurs to large power transistors near the outputs. From my experience, that's the repair technique often used by the aging CNC repair specialty shops. Good luck, Bruce On 02/08/2015 11:40 AM, Dean Posekany wrote: A little background : About six years ago, as I was just starting to design my shop-built gantry machine, I came across a SUPER deal on Ebay for six sets of drive components. Each set included a line filter, Parker OEM300 75V, 7.5A power supply, Parker OEM750 stepper driver and a stepper motor. I didn't know a whole lot about this stuff a the time, but I knew it was a deal I couldn't pass up. So, they became the drive system for my CNC build. As it turned out, only five of the six drivers worked. Thas wasn't a problem (especially for what I'd paid for them) because my gantry is only (at least for now) a 3-axis machine. But, six years later I've lost two additional OEM750's and I'm now running on my last three. Another failure and I'm down and its decision time. Here's my question for the worldly experience of the group. I'm retired and this is a serious hobby machine and I don't have a great deal of money that I can throw that this. So when the inevitable failure of the next stepper driver occurs, what would you do? Repair the OEM750 (~$280)? Or would you look at replacing the Parker hardware with something else like Gecko or maybe go the Mesa route? I've really been pleased with the stepper performance I get from the Parkers and the software stepper generation that Linuxcnc gives me is more than fast enough for the work I do. The repair is expensive and the drives were released in 1997. So they're 18 years old. I just don't have enough real world experience with this stuff to feel like I can make a good decision. If it was your problem, what direction would you go? Thanks in advance for your thoughts. Dean -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] $64 question
On 15-02-05 07:31 AM, bhri...@bresnan.net wrote: Hi Lawrence: Am wanting to build ur servo project but have had no luck compiling it. is any of the files on ur site of that project already complied so that i could just load onto the pic. with mp pickit 2?Thanks Bill WA0WWN -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Hi, I noticed the zip file with the project also has the .hex file to program the pic have a look in http://members.shaw.ca/swstuff/dspic-servo-29jan2008.zip havent played with the pic stuff for a couple of years... I havent tried the version 10X development environment or whatever the latest is. If you send me your compile time errors, I might be able to figure it out... I have run into a few definition changes when changing development versions, See the Notes section on http://members.shaw.ca/swstuff/dspic-servo.html cheers Lawrence -- Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
