http://blog.gmane.org/gmane.linux.distributions.emc.user hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://comments.gmane.org/gmane.linux.distributions.emc.user/36669 <pre> Greetings, I am now setting up my new X axis servo with an AMT 102 encoder. The motor is normally dithering between 0.0003 and 0.0006 inches. But every now and then - for no obvious reason it jumps up to 0.02+ inches and doesn't attempt to return to the correct location. It just jumps randomly. I think it must be interference. The cable is double shielded and the shields are grounded to the encoder ground the length of the cable outside my enclosure. I am suspecting the interference is inside the enclosure where there are unshielded encoder and power wires. I was thinking of carefully wrapping aluminum foil around the power wires and grounding them, then shrink-wrapping or covering the aluminum with electrical tape. Would I want to ground the power wire shield to the power supply ground or the encoder ground? Do you think this might help? Anyone have any other suggestions? I wish I could see magnetic fields! Short of that, at times like this I wish I had a magnet implant like this guy that can feel magnetic fields: http://www.wired.com/gadgets/mods/news/2006/06/71087?currentPage=all Thanks, Jeshua Lacock Founder/Engineer 3DTOPO Incorporated &lt;http://3DTOPO.com&gt; Phone: 208.462.4171 ------------------------------------------------------------------------------ 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/ </pre> Jeshua Lacock 2012-05-26T08:26:22 http://comments.gmane.org/gmane.linux.distributions.emc.user/36632 <pre>I have built a motor. Internal space is quite tight, so I am using the Avago AEDR8340K encoder detector http://uk.rs-online.com/web/p/rotary-encoders/7160604P/ (Also available from Mouser etc). This is a 3mm x 5mm two-channel quadrature detector. TTL output wires direct to Mesa / Parport / Pico. I initially tried to make my own encoder disc by etch-resisting (with a pen) some polished aluminium then etching with FeCl http://youtu.be/c1zCG-uPaoM This almost worked, but there was a problem with missed/multiple counts. The AEDR application notes make it clear that it really can't be expected to work right at anyhting other than native resolution. In the case of the "K" variant that is 75lpi, which means 0.15mm (0.006") slot width. i got a quote for Photochemical etching from Photofab which was rather reasonable (£4 each) but with a £100 setup charge and a 25 minimum quantity (s £200+ all in). I then found that within half a mile of my house is a company who specialise in laser cutting solder stencils for PCB assembly. They have a machine with a 25um beam width optimised for cutting stainless sheet: www.sparkslaser.com They are doing me 2 different parts for £50 (and have already given me one fully-finished part as a "sample", which tested with 100% success this lunchtime. I will get pictures later. This seems like quite an easy way to make a spindle encoder, for example, where off-the-shelf encoders tend to have too small a bore. I imagine that if Basildon has a stencil-making business, then they must be numerous. </pre> andy pugh 2012-05-25T12:09:51 http://comments.gmane.org/gmane.linux.distributions.emc.user/36543 <pre>Greets all; Does anyone have any links in their bookmarks that might give me a 'rule of thumb' at least for BP nipples using #209 primers? I have the 2nd one at the "all the cylindrical work done" stage, and so far a single #74 drill (0.0235") in the center of the end of it, which is obviously smaller than a factory nipple has, with that one being about a #67, and 2 more that same size on the sides so they blow out thru the circular gap between the breech plug and the end of the nipple. I'm out of #67 and #68 drill bits with only 2 indexes, chinese of course &amp; only 1 out of 3 actually sharp. So instead of drilling one hole all the way thru, I thought I'd drill 2 all the way thru giving 5 .0235" vent holes. I tried the first of these nipple designs out Monday and got a 2" group, but with 5 #68 holes, the blow back is pretty strong, backing the striker up and lifting the primer plumb clear of the nipple with only a 50Gr load of BlackHorn 209. That of course lets out quite a bit of gas, none of which seemed to get to me although there was quite a cloud of it the breeze carried into my face for a couple seconds. I've considered cobbling up a latch for the striker so that when it comes down, its snap locked, holding the primer in place, requiring the latch to be released to cock it again. The TC Black Diamonds are not exactly a closed breech design, so the latch it closed idea is a good one, just need to work out the details. That's what you get for something that wally sold for $200 several years ago, but it still shoots better than the $600 Omega they just put a new barrel on since the OEM barrel was damaged from the gitgo. It shot a 3" group Monday with the same load the Black Diamond used for a 2" group, but hey, that is about 3 feet smaller than it did OOTB with the damaged barrel. Anyway, this is about flash hole sizes. Does anybody have any comments/links to offer? Cheers, Gene </pre> gene heskett 2012-05-24T01:42:10 http://comments.gmane.org/gmane.linux.distributions.emc.user/36503 <pre>I have been using a bosch colt on my 22x16 cnc router. I need to upgrade to something that can handle 3/16 end mills natively. The only option with the colt is to use a bushing. Think and tinker makes 3/16 collets for other routers, but not this one. Really what I'd like is something with quick change tools, but not sure where to look. I'd like to keep it under $500, but probably wouldn't happen with quick change. ------------------------------------------------------------------------------ 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/ </pre> Erik Friesen 2012-05-23T16:53:10 http://comments.gmane.org/gmane.linux.distributions.emc.user/36474 <pre>Totally Off Topic I have a retired buddy on a fixed income that loves to fly fish, in fact that is the only way he fishes. He has a couple of wally world fly rods that he uses and has expressed a desire to get a split bamboo rod. All I know about fly fishing fits on a pin head... I do know more now than before as he has shown me how to rig the lines on one. All I know is his cheapo rods are 5/6 what ever that means. Where would one look to find an economical split bamboo rod for him? Thanks John ------------------------------------------------------------------------------ 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/ </pre> John Thornton 2012-05-23T12:57:58 http://comments.gmane.org/gmane.linux.distributions.emc.user/36468 <pre>I wonder if there is any use for a touchscreen tablet as a remote/pendant? A friend of mine is trying to push these: http://www.amazon.co.uk/Fineslate-Capacitive-Ice-cream-Sandwich-Facebook/dp/B007L9YZP4/ref=sr_1_1?s=computers&amp;ie=UTF8&amp;qid=1337766725&amp;sr=1-1 </pre> andy pugh 2012-05-23T12:39:43 http://comments.gmane.org/gmane.linux.distributions.emc.user/36445 <pre> Greetings, I turned on the power to my system today and my 180 pound gantry shot full speed crashing hard into the end of my table. It hit with so much force it actually lifted the front two legs of the 500+ pound table 6+ inches off the floor! Yikes! Luckily the machine only suffered minor damage, but needless to say I really would like to avoid this from ever happening again. I was a stumped at first as the last time I used it everything was stable. It turns out that I had a loose connection to the encoder. I am going to soldier the wires on the pins of the encoder to prevent that from happening again, but I was wondering if there is anything I can do to disable motor power in the event a connection to a encoder is lost. I understand why it happened - without the encoder live the motor was just attempting to position itself at 0. I am guessing there is not an easy way to detect this condition, but I wanted to see if anyone else has any thoughts on the subject. Thanks, Jeshua Lacock Founder/Engineer 3DTOPO Incorporated &lt;http://3DTOPO.com&gt; Phone: 208.462.4171 ------------------------------------------------------------------------------ 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/ </pre> Jeshua Lacock 2012-05-23T06:08:12 http://comments.gmane.org/gmane.linux.distributions.emc.user/36442 <pre>Hello, Just wondering if someone might know why LinuxCNC interprets the G04 dwell command parameter as seconds instead of milliseconds? I'm fairly certain most other machines (ie Fanuc and others) interpret the P value as milliseconds. For example, the command: G04 P3000 is interpreted by most machines as stop the tool for 3000 milliseconds (3 seconds). But LinuxCNC interprets this as 3000 seconds. Also, I think the G04 command should take X or P (or possibly U), where the X value is normally in seconds and the P value is normally milliseconds. LinuxCNC does not allow X values and will throw an error if it encounters one. If anyone can clear this up I would be grateful. I'm writing an extension for Inkscape that generates G code and I'd like to make sure that its output is nominally correct. thanks, - Claude P.S. I'm using LinuxCNC to control an old Fletcher F6100 CNC mat cutter that has a tangential knife (a fourth axis that rotates about the Z axis that is always tangent to the direction of travel along the X and Y axes) ------------------------------------------------------------------------------ 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/ </pre> Claude Zervas 2012-05-23T05:35:49 http://comments.gmane.org/gmane.linux.distributions.emc.user/36416 <pre>Hi everyone, I just ran into Intel DN2800MT mini-ITX motherboard. http://www.intel.com/content/www/us/en/motherboards/desktop-motherboards/desktop-board-dn2800mt.html It has HDMI, LVDS (can be useful for LCD panels), LPT header, two miniPCIe slots (SSD and wifi if necessary) and built-in PSU! (8-19V DC input required). PCIe slot is suitable for 6i25, which is probably very new, it's even not in MESA's price list, I guess the price is compatible to 5i25's. Very thin board, all looks perfect. Costs $105. But the most important question is: Anyone tested the latency? Regards, Andrew ------------------------------------------------------------------------------ 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/ </pre> Andrew 2012-05-22T17:10:10 http://comments.gmane.org/gmane.linux.distributions.emc.user/36415 <pre>Dear Linuxcnc Users, I've been talking with a gentleman from NASA who worked on the last version of APT (APT 4 SSX 8) developed with public funding, about releasing the code for everyone's use and education. After some searching, a copy of this has been found. This program is written in Fortran and is a much more recent vintage (ran on Sun Workstations) than the IBM360 version we currently have to work with. It also has improvements to the pocketing routines developed at NASA. As with any activity involving governments, a great deal of paperwork needs doing to ensure that the activity is justified, causes no harm to U.S. interests, doesn't discriminate against people with disabilities, or people who are members of a protected class, etc. All i's must be dotted and t's crossed before the code can be released. The area I need help with is (for lack of a better term) "justification". That is; Will releasing this code be helpful to any U.S. based companies or educational institutions? If you represent (or are a part of, or participate in, or are otherwise involved with) a U.S. based company or educational institution, of any size, AND would benefit in any way from the availability of this source code, I would like to hear from you. At the moment, all I need is some idea of: 1. Who you are. 2. What company or institution. 3. A BRIEF (one or two sentences will do, though more is fine) description of what benefit you would receive. Later on this may have to be written on your company or school letterhead, but for now a short reply to this post would be very welcome. I would also be interested in hearing from any people with experience in Fortran who would be interested in helping port this code to the Linux platform. If you could indicate your level of Fortran experience and any reasons for your interest in this code, that would be very helpful. Please also speak up if you have an interest in studying the algorithms in the existing Fortran with an eye towards reimplementing them in another programming language. Thanks, Matt Shaver ------------------------------------------------------------------------------ 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/ </pre> Matt Shaver 2012-05-22T16:26:22 http://comments.gmane.org/gmane.linux.distributions.emc.user/36407 <pre>Are there any major dis-advantages to using glass scales as position feedback for a servo system versus using encoders directly attached to the motors. I could see where backlash might be an issue but if using precision ground ballscrews........ ------------------------------------------------------------------------------ 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/ </pre> erik.555.green-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org 2012-05-22T13:43:33 http://comments.gmane.org/gmane.linux.distributions.emc.user/36375 <pre>Hi all, Per the "Setting Coordinate Systems" thread, I converted from using coordinate systems (G54-G59.3) and setting the offsets with G10 L2, to using the offsets specified in the tool table. Mostly it worked without a problem. The exception is when re-running a program without reloading it. The beginning of the program will have two lines similar to the following: T3 M6 G43 H3 If I just rerun, the tool offsets seem to be ignored, but if I do a reload of the same program it runs fine. Do I need to add a G43 H0 to the end of the program, is there another explanation for why the offsets are ignored when rerunning? Thanks, Eric ------------------------------------------------------------------------------ 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/ </pre> Eric H. Johnson 2012-05-21T19:51:24 http://comments.gmane.org/gmane.linux.distributions.emc.user/36372 <pre>One of the better videos of large format CNC for those in want of a nice bedtime video; http://www.youtube.com/watch?v=Xn7tsNG6pyo Regards Roland ------------------------------------------------------------------------------ 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/ </pre> Roland Jollivet 2012-05-21T17:24:13 http://comments.gmane.org/gmane.linux.distributions.emc.user/36340 <pre>I wonder what kind of power and data cables would you recommend for use in X-Y-Z CNC about 1.2mx1m size? Besides power, it's not clear to me how many data lines for sensors, encoders, motor control, etc. are needed in general. Is it preferable to carry power and handful of control signals to the circuit on the gantry and preprocess some functions there or have everything wired into the central box? That would dictate the number of wires in the cable needed and what kind you need to buy. Would cable carrier from McMaster-Carr # 55835K432 be sufficient? Thanks, </pre> Rafael Skodlar 2012-05-20T16:40:23 http://comments.gmane.org/gmane.linux.distributions.emc.user/36326 <pre> Greetings, I seem to have the damping turned all the way up on my Gecko 320, but it is still underdamped. Is it possible to increase damping with the PID settings (I am using the Pico Systems USC board)? Would gearing down my drive further help with damping if I it is not possible to increase it any other way? Thanks for any suggestions! Best, Jeshua Lacock Founder/Engineer 3DTOPO Incorporated &lt;http://3DTOPO.com&gt; Phone: 208.462.4171 ------------------------------------------------------------------------------ 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/ </pre> Jeshua Lacock 2012-05-20T00:16:56 http://comments.gmane.org/gmane.linux.distributions.emc.user/36321 <pre>Did how subroutines work change from 2.3 to 2.5? I had a file I ran 6 months ago on 2.3 and with no changes just moved it to the new computer w/2.5 and I get an error :   unable to open file   The sub is in the same program just at the bottom   % some code   o31 call    (is the line where the error is)   some other code   m30 (one line space here) o31 sub   some code here   o31 endsub %     Terry ------------------------------------------------------------------------------ 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/ </pre> Terry Christophersen 2012-05-19T19:27:48 http://comments.gmane.org/gmane.linux.distributions.emc.user/36289 <pre>Hi all, The setting of the coordinate system (G53-g59.3) is not working the way I expected, and I am trying to figure out what I am doing wrong. I am running linuxcnc 2.5, BTW. After initialization and homing, if I issue: G53 G0 X0 Y0 It will correctly move to absolute machine 0, 0. This happens to be starting from machine zero, but no matter where it starts I also issue: G92 X0 Y0 I then set my coordinate systems programatically, for example: G10 L2 P2 X10 Y10 G10 L2 P3 X20 Y20 G10 L2 P4 X30 Y30 And then have an initial move as such: G56 G0 X0 Y0 It will correctly move to the offset for coordinate system 2 (10, 10). If I then run the program to completion, I can re-run it and it will run correctly with the appropriate offsets. However, if I stop the program in the middle and the issue: G53 G0 X0 Y0 It will again go to absolute machine 0, 0. However, if I restart the program above with the three G10 commands, it seems to ignore those offsets when it gets to: G56 G0 X0 Y0 Further, even rehoming and rerunning will not re-establish the offsets, although a complete reinitialization will. I have also tried playing with various permutations of G92 (G92.1, G92.2), in the event the G92 I did at the beginning is contributing to the problem, but that seems to make no difference either. Does anyone see anything obvious I am doing wrong. Thanks, Eric ------------------------------------------------------------------------------ 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/ </pre> Eric H. Johnson 2012-05-18T15:16:24 http://comments.gmane.org/gmane.linux.distributions.emc.user/36284 <pre>Hi all, About a year ago I acquired a D510M0. A few days ago I found a 'roundtoit' and started to build a replacement controller for my cinci. The present one is a Duron 1200 running 8.04/2.4.6/7. ;-) Hardware: mini-itx D510M0 2 x 2Gb 800 MHz "patriot" memory sticks (DDR2) 1 160 Gb sata Seagate Baracudda 7000 1 sata cdrom drive (for installation only) After trying many times (insanity) to get the 510 to install 10.04/2.5 (live) I took the memory to a computer place to have it tested. Both sticks tested fine on memtest-86. Came back home and plugged them in to no avail and tried the install again. Burned bootable cd of memtest-86. On the D510 it crashes in the first 2 sec.... only finds one cpu and just locks up. Moved memory to a Gigabyte with E5300 and it is presently testing just fine. So I need to move on ... the ideal board would be something like the D510 with an ide port so I can use my CF. Lacking the availability of that maybe something like the D525MW would be appropriate. I really want to use the mini-itx format. Ideas and or suggestions would be greatly appreciated. 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/ </pre> Dave Engvall 2012-05-18T14:29:45 http://comments.gmane.org/gmane.linux.distributions.emc.user/36255 <pre>I wonder if this uses g-code? http://www.youtube.com/embed/yigRgG_NIyU </pre> Kirk Wallace 2012-05-16T23:26:16 http://comments.gmane.org/gmane.linux.distributions.emc.user/36218 <pre> Greetings, I now mostly have my new Pico System's Universal Stepper Controller (USC) and Gecko Interface working with my Gecko 320 drives. When I first got it going, my X and Z drives "jumped" repeatedly until I turned the damping up. But my Y drive keeps "jumping" even with the damping and gain at max. I tried various combinations of gain and damping, but no matter what I do (unless the limit is set to all but off) I can't seem to get the Y drive to dither. The X and Z motors are smallish 20-volt servos (plan on upgrading them soon), and my Y is a 90-volt Keling KL34-180-90: http://www.kelinginc.net/ServoMotors.html Before I wired up the USC, I was able to get the servo to dither and work normally. There are a ton of settings in the hal files, but I have no idea what might need tweaking. Any suggestions would be greatly appreciated! Thanks, Jeshua Lacock Founder/Engineer 3DTOPO Incorporated &lt;http://3DTOPO.com&gt; Phone: 208.462.4171 ------------------------------------------------------------------------------ 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/ </pre> Jeshua Lacock 2012-05-16T07:13:02 http://comments.gmane.org/gmane.linux.distributions.emc.user/36210 <pre>Arrrrrgh StepConfig overwrites custom_postgui.hal with an empty file. The name 'custom' suggests it should not. Mike ------------------------------------------------------------------------------ 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/ </pre> Mike Bennett 2012-05-16T05:51:14 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.linux.distributions.emc.user