#linuxcnc | Logs for 2014-05-27

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[00:18:41] <somenewguy> oh and cradek, not mentioned anywhere is how rapid works on the rotary, atleast in AXIS, which can be a little terrifying if it catches you off guard
[00:19:35] <somenewguy> holding the jog key "]" or "[", and then the pressing the rapid key "shift", then releasing the jog key starts continous motion on that axis untill a jog key is pressed again
[00:20:21] <somenewguy> a usefull feature but possibly disasterous the first time you discover it lol
[00:35:56] <micges> it's a bug
[00:36:18] <XXCoder> no no its a feature heh
[00:38:02] <micges> there was many such 'features' with keyboard jogging, we was thinking that they were all fixed
[00:38:20] <micges> somenewguy: what linuxcnc version?
[00:40:32] <somenewguy> 2.5 pretty sure
[00:40:55] <somenewguy> I'll be at that machine in an hour, I'll try and post for sure version then
[00:41:54] <micges> maybe you can report bug to bugtracker so it won't be lost
[00:44:46] <somenewguy> sure thing
[00:44:58] <somenewguy> wait is that still a mailing list or do I need to make an account somewhere?
[00:46:34] <micges> iirc you don't have to make account to report on sf.net/projects/emc
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[01:11:59] <somenewguy_shp> mikecheck??
[01:12:04] <somenewguy_shp> am I alive
[01:12:07] <somenewguy_shp> looks like it
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[02:41:34] <CaptHindsight> http://machinedesign.com/robotics/soft-touch-robots-nix-complicated-kinematics-and-delicate-forcetorque-sensors-software-impr
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[02:50:51] <Jymmm> http://www.theguardian.com/artanddesign/gallery/2012/feb/20/google-street-view-nine-eyes-in-pictures#/?picture=386213498&index=0
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[03:59:13] <CaptHindsight> gadzoooks ordered from China on Friday afternoon shipped via China Post, delivery tomorrow in the AM
[03:59:49] <CaptHindsight> takes longer from California
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[04:10:55] <zeeshan> i need to pass a vga cable through a 1" hole
[04:10:59] <zeeshan> how can i achieve this? :p
[04:11:36] <XXCoder> is detching one end a option?
[04:11:51] <zeeshan> no
[04:11:52] <zeeshan> :P
[04:11:58] <zeeshan> theres a billion tiny wires in it
[04:12:02] <XXCoder> use your 4d power then
[04:12:03] <zeeshan> i wont be able to join em back together
[04:12:37] <XXCoder> hmm'
[04:12:47] <XXCoder> wonder if there is narrow version of vga connector
[04:13:16] <XXCoder> or you could wire up it with adoptor using some preexisting connector with enough points
[04:13:25] <XXCoder> isnt vga 12 wire?
[04:13:39] <zeeshan> 15
[04:14:57] <XXCoder> 4 of http://www.molex.com/molex/products/family?key=ditto_wiretowire_interconnects&channel=products&chanName=family&pageTitle=Introduction&parentKey=wire_to_wire_connectors
[04:15:12] <XXCoder> make your own vga -> this and this -> vga adoptors lol
[04:15:18] <zeeshan> haha
[04:16:23] <XXCoder> seriously though
[04:16:27] <XXCoder> hole is one inch?
[04:16:35] <XXCoder> vga is barely larger I think 1.2
[04:16:56] <XXCoder> you probably could drill small holes on sides to expand enough if mod is a option
[04:17:48] <zeeshan> http://www.asus.com/media/global/products/eHvAsncuWn6qozuc/AmRYmYaS1UUHQS7N_500.jpg
[04:17:49] <zeeshan> hmm
[04:17:54] <zeeshan> the video card has a hdmi output
[04:18:12] <XXCoder> heh dvi is getting rare
[04:19:59] <XXCoder> sucks because my montiors is dvi lol
[04:20:53] <zeeshan> i wonder if ican use this
[04:20:54] <zeeshan> http://www.amazon.ca/DVI-HDMI-Cable-6ft-Male-Male/dp/B0002CZHN6
[04:21:23] <XXCoder> I dont think inverse exists but that is nice
[04:21:37] <zeeshan> well the monitor has a dvi-input
[04:21:44] <zeeshan> and the video card has a hdmi output
[04:21:50] <XXCoder> http://www.amazon.ca/HDE-1080P-Female-Converter-Adapter/dp/B00C0Y6BQG/ref=sr_1_1?s=electronics&ie=UTF8&qid=1401164500&sr=1-1&keywords=vga+hdmi
[04:22:00] <XXCoder> lol
[04:22:15] <XXCoder> but yeah that is nice idea, hdmi is thin and easily gp though that 1 in hole
[04:24:21] <zeeshan> yessir
[04:25:11] <XXCoder> plus overall better res
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[04:33:40] <CaptHindsight> http://www.youtube.com/watch?v=ch8Dqdr-U8g#t=109 think of the pancakes you could make with this if you have a big enough pan
[04:38:53] <XXCoder> lol capt
[04:39:02] <XXCoder> guess you clicked "link at this time"
[04:39:07] <XXCoder> because all I see is close
[04:39:37] <XXCoder> but yeah wow
[04:40:15] <XXCoder> really theres so many different cncs wow
[04:41:27] <XXCoder> interesting https://www.youtube.com/watch?feature=player_detailpage&v=FB8lnCY3UeU#t=130
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[06:56:54] <Deejay> moin
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[11:19:52] <jthornton> morning
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[11:28:05] <Deejay> hi
[11:28:20] <malcom2073> Hi
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[11:32:18] <amaldo> Hi. Is this the correct place to ask a question about MachineKit? I want to test LinuxCNC with rt_preempt realtime instead of rtai. But I'm having problems loading the hal module for the Mesa 5i25 card.
[11:35:07] <gonzo_> I expect yopu are in the right place. But you may have to wait till a little later in the day for the US guys to be around
[11:35:29] <malcom2073> I'm using machinekit, but unfortunatly I don't have any experience with Mesa cards
[11:35:47] <amaldo> gonzo_, Thanks, I will trying in the meantime.
[11:36:34] <malcom2073> amaldo: You may also have better luck on the machinekit google groups
[11:37:12] <amaldo> The reason I'm trying the rt_preempt approach is that on my i5 machine, the latency and jitter values are outrageous under rtai (usually wakes up after 2mS instead of 1mS). The numbers under rt_preempt are, on the contrary, great. About 10-30uS jitter on the 1mS test.
[11:37:33] <amaldo> malcom2073, Thanks. Will have a look there too.
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[11:39:19] <CaptHindsight> isn't xenomai what everyone was using on the BBB, RTAI is a work in progress
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[11:43:17] <amaldo> Actually, I want to run this on a normal PC (i5), It is just that RTAI is not working right, while rt_preempt does.
[11:45:37] <malcom2073> xenomai is what I'm using, and afaik what others are also using on the BBB
[11:47:02] <CaptHindsight> amaldo: what exactly do you want to run on your x86 PC? You were asking about machinekit for an ARM cpu
[11:47:33] <malcom2073> CaptHindsight: Machinekit isn't just for BBB :)
[11:47:47] <amaldo> malcom2073, are you running machinekit on a PC too?
[11:47:56] <malcom2073> amaldo: No, I'm running it on a BBB.
[11:48:50] <amaldo> CaptHindsight, It seemed to be the newest code that supports running under a rt_preempt patched kernel. It looks like it also should run on a normal PC.
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[11:56:30] <amaldo> malcom2073, out of curiosity, what hardware do you have connected to the BBB?
[11:56:39] <malcom2073> amaldo: a Gecko G540
[11:56:46] <malcom2073> connected through a PMDX-432 cape
[11:57:43] <amaldo> malcom2073, nice! And it is not even expensive.
[11:57:54] <CaptHindsight> amaldo: what benefits do you see for your application for machinekit vs linuxcnc?
[11:58:00] <malcom2073> Not terribly.
[12:01:03] <amaldo> CaptHindsight, I tried the latest git code from linuxcnc, but it seems to depend on RTAI still. I found some old forks called "Unified-..." where there is an option to use RTAI, Xenomai, or rt-preempt. It seemed to me that those went on to become machinekit.
[12:02:25] <amaldo> CaptHindsight, since RTAI is behaving strangely on my PC, I went on to try something else. RTAI has horrible latency times on this PC. I tried with the bootable CD, and also compiling my own kernel with the newest RTAI patches.
[12:03:17] <CaptHindsight> I viewed machinekit as a port of linuxcnc to the BBB for headless applications. What am I missing?
[12:04:20] <CaptHindsight> amaldo: I follow you. I'm just wondering why you want to run machinekit on x86?
[12:04:47] <CaptHindsight> I also understand that machinekit can also run ob x86
[12:04:58] <CaptHindsight> ob/on
[12:05:46] <amaldo> CaptHindsight, actually, I just want LinuxCNC, but doing realtime over rt_preempt, and using a Mesa 5i25 card (+7i76)
[12:06:54] <cradek> if rtai has horrible latency, it's a bios setting or hardware problem
[12:07:04] <cradek> all the compiling in the world won't fix that
[12:07:31] <CaptHindsight> amaldo: what results do you get from the Linuxcnc livecd latency test?
[12:07:34] <amaldo> cradek, actually, it seems like a software issue. no matter how I abuse the machine under rt_preempt, I don't get any worse latency than 30uS.
[12:08:33] <CaptHindsight> amaldo: what hardware is this on? (cpu and chipset)
[12:08:48] <CaptHindsight> i5?
[12:08:55] <cradek> that's extremely surprising. are you using a known-good rtai build? they can be kind of hard to get working right.
[12:08:57] <amaldo> CaptHindsight, let me the exact data. Yes, i5
[12:09:31] <cradek> the memleak 3.4.55 rtai kernel package works well for me on an i3
[12:10:20] <CaptHindsight> amaldo: how about the older 2.6 RTAI on 10.04 livecd?
[12:10:43] <cradek> yes that one is also known good
[12:10:49] <amaldo> CaptHindsight, I haven't tried the older CD. The network does not work.
[12:11:35] <CaptHindsight> amaldo: how does the 3.4.55 RTAI work with the i5?
[12:11:46] <amaldo> CaptHindsight, Intel i5-2400 CPU @ 3.1GHz (quadcore). Mainboard: P8H67-M Pro
[12:11:47] <cradek> I've used lots of e1000 pci cards with lucid
[12:13:01] <amaldo> Yes, I actually had to get an additional e1000 pci card. I can put that back in to try later with the other bootable CD.
[12:13:25] <amaldo> CaptHindsight, cradek : So is the old 10.04 live cd known to work better on some machines?
[12:13:35] <CaptHindsight> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?LinuxCNC_On_Ubuntu_Precise did you try this or what distro kernel combos have your tried?
[12:14:07] <cradek> better than what? it has been used on a huge variety of hardware for years
[12:14:13] <CaptHindsight> amaldo: the 10.04 livecd works fine on most machines
[12:14:31] <amaldo> I see.
[12:15:00] <cradek> you have way too many unknowns and using known-good rtai builds would narrow it down a lot
[12:15:02] <CaptHindsight> the only problem tends to be gpu hardware accel for newer boards
[12:16:38] <amaldo> CaptHindsight, I can try this later. What I've done now is this: Debian wheezy. Kernel 3.8.13 with the latest rtai-4.0 patch applied.
[12:17:05] <CaptHindsight> rtai 4.0 is still in the works
[12:17:10] <CaptHindsight> not stable
[12:17:41] <cradek> my desktop mill is wheezy: Linux emc 3.4.55-rtai-2 #1 SMP PREEMPT Sun Dec 15 23:40:48 MST 2013 i686 GNU/Linux
[12:18:01] <amaldo> CaptHindsight, That might explain things. I will go try 3.x
[12:18:20] <amaldo> cradek, did you compile that kernel yourself?
[12:18:37] <cradek> no, I just installed the deb
[12:19:03] <cradek> I'd rather hack on linuxcnc than futz with kernels
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[12:19:51] <amaldo> cradek, can you point me to the wheezy repo where that kernel is?
[12:20:28] <amaldo> cradek, I don't mind compiling my own, but right now I'd rather go with some tested versions to see if I can get rid of this weird bug.
[12:20:54] <cradek> I think I grabbed it from http://linuxcnc.org/dists/precise/base/binary-i386/
[12:21:14] <cradek> those firmware packages will work too
[12:21:17] <CaptHindsight> building RTAI is tricky
[12:23:51] <amaldo> CaptHindsight, yes, I found conflicting info about which options should be enabled while compiling the rtai-patched kernel.
[12:25:20] <CaptHindsight> memleak battles with it all the time
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[12:25:55] <CaptHindsight> that's why there is the 3.4.55 RTAI .deb
[12:29:58] <amaldo> CaptHindsight, If that one works for me, I'll have a closer look at the options chosen to compile that kernel vs what I had.
[12:31:14] <CaptHindsight> https://github.com/ShabbyX/RTAI/blob/master/README.INSTALL
[12:31:58] <CaptHindsight> if you're interested in helping support newer kernels that would be great
[12:33:10] <CaptHindsight> the way it's been working for the past year is the new development does on at github.com/ShabbyX/RTAI
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[12:34:33] <CaptHindsight> the it gets merged (rewritten) at RTAI.org
[12:36:04] <amaldo> CaptHindsight, thanks. That's a good pointer. Could have saved me time to find that before.
[12:36:43] <Cylly> soo. got the remote cam perfected... works great... -> http://youtu.be/AkKHPsJtZlc
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[12:50:43] <amaldo> CaptHindsight, I see that the 3.4.55 debs are all for i386. Anyone running this on amd64?
[12:55:09] <CaptHindsight> memleak got RTAI amd64 running, but it didn't get much testing
[12:56:25] <CaptHindsight> amaldo: you can use the i386 with PAE if you need more memory
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[12:59:24] <amaldo> CaptHindsight, I put the hard drive from the i5 on an AMD APU (A10-7850K) machine, and I got 19260nS max jitter after a lot of abuse (1 hour)
[13:00:05] <amaldo> CaptHindsight, using RTAI 4.0, kernel 3.8.13, and AMD64.
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[13:00:56] <CaptHindsight> we usually get under 10uS on AMD in the past 5+ years
[13:01:06] <amaldo> CaptHindsight, so that's why I suspected the software not liking that i5. It worked fine on the AMD machine.
[13:01:38] <CaptHindsight> well RTAI 4.0 was made more stable but it still needs work
[13:01:58] <amaldo> CaptHindsight, Sure, it is not impressive, but it's workable.
[13:02:14] <CaptHindsight> expect to spend lots of time if you really want bleeding edge RTAI
[13:02:22] <amaldo> CaptHindsight, On the i5 using rt_preempt, I get 3478 nS max jitter if I disable frequency scaling. That is pretty neat.
[13:02:58] <CaptHindsight> amaldo: is that with the cpu held at max freq?
[13:03:01] <amaldo> CaptHindsight, yep.
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[13:03:33] <CaptHindsight> preempt_rt is also easier to build
[13:03:45] <amaldo> CaptHindsight, that was about 5min, running four burnP6 and 4 glxgears, plus network and hd use.
[13:04:28] <CaptHindsight> amaldo: opening firefox + flash tends to give us the biggest bumps
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[13:05:07] <CaptHindsight> spend a few minutes on youtube and some flash heavy site for some real abuse
[13:05:17] <amaldo> CaptHindsight, yep, so you can see why I was tempted to use machinekit with it. Are the changes on that direction going to be ported to linuxcnc too?
[13:05:24] <amaldo> CaptHindsight, ok, will try that.
[13:06:48] <CaptHindsight> the wait is on RTAI.org to fix and update afew things before it makes it back to Linuxcnc
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[13:12:41] <amaldo> CaptHindsight, I just tested that. I got 15.5uS max, I would not have guessed that watching fullHD videos on youtube using flash was more difficult to the RT system than cpu-burn and glxgears.
[13:12:50] <pcw_home> Preemt-RT is also more up to date so supports newer hardware
[13:13:12] <amaldo> CaptHindsight, so to correct that, the i5 using rt_preempt amd64 got 15.5uS max jitter.
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[13:14:05] <pcw_home> YOou wont know the performance until you look at hardware timing (the latency test does no I/O so misses hardware blocks)
[13:15:18] <amaldo> pcw_home, any easy way to measure that? Will I need an OSC and signal generator? :)
[13:15:51] <pcw_home> toggle an output bit
[13:17:22] <amaldo> pcw_home, you mean, toggle an output bit with a certain frequency, and then look physically at the signal coming out (with an oscilloscope, and the jitter there?
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[13:18:43] <pcw_home> Yes or if its a mesa card or some other card with a timer, sample the free running timer and calculate deltas
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[13:19:30] <pcw_home> or if the mesa config has the DPLL, there's a pin for instantaeous error
[13:19:43] <amaldo> pcw_home, I got the 5i25 (+7i76) here.
[13:19:58] <amaldo> actually a 6i25.
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[13:35:31] <amaldo> I just booted the i5 with the official linuxcnc 10.04 ubuntu CD, and ran the latency test. Had to install flash also. I got 9.9uS max jitter (about the same for both threads).
[13:36:03] <amaldo> pcw_home, I don't know yet enough the mesa card to measure those signals. Any pointers on how to program that?
[13:37:46] <amaldo> I had tested this machine with that CD before, but had really horrible latency values (I think almost 1mS). The only thing between then and now is that I upgraded the BIOS to the latest version.
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[13:40:00] <CaptHindsight> it's probably in the ballpark of 10uS
[13:41:04] <CaptHindsight> BIOS updates can make a big difference, even settings
[13:43:30] <amaldo> CaptHindsight, I had played with all the BIOS settings before, trying to get rid of the horrible values. But to no avail. Right now it even has those nice values even with almost all BIOS settings at default. I should try to flash the old version to be sure, but I don't know if it will let me.
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[13:43:54] <amaldo> Anyway, thanks a lot people. You have pointed me in the right direction.
[13:43:59] <CaptHindsight> it's not as dangerous as it used to be
[13:44:44] <CaptHindsight> turning off power management and any speed stepping helps the most
[13:46:12] <amaldo> CaptHindsight, Yep, I had done that before, but still was bad. The 10uS value now is even with those on. Or maybe the realtime 'gods' are just smiling at me today.
[13:46:28] <CaptHindsight> http://hackaday.io/project/962 "uses cheap RC Servomotors combined with Hall Effect sensors, using a closed-loop controller to precisely position the extruder."
[13:46:51] <CaptHindsight> amaldo: good juju today
[13:48:02] <malcom2073> Their use of the word namespace. "You keep using that word... i do not think it means, what you think it means"
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[13:51:02] <CaptHindsight> arekm: They don't listen to experienced people. B: They like to poorly reinvent the wheel. C: Voices tell them to "just do it". D: Who the F*** knows?
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[13:51:44] <arekm> good to know ;P
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[13:52:01] <CaptHindsight> sorry, not sure how that ended up on the front of that :)
[13:53:20] <CaptHindsight> "We have replaced stepper motors with DC motors and a new kind of encoder called a hall effect orientation encoder." New to whom?
[13:53:26] <CaptHindsight> cave people?
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[13:54:02] <amaldo> hehe... 'new kind of encoder'. :)
[13:54:10] <_methods> cave people = 3d printer people
[13:54:21] <malcom2073> I take offence to that :P
[13:54:41] <CaptHindsight> _methods: well if it walks and talks like a .....
[13:54:46] <_methods> heheh
[13:54:54] <_methods> talks like a caveman?
[13:54:58] <archivist> the wheel has been reinvented since before the wheel was invented
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[13:55:33] <_methods> i love how there are these books about gcode that they just ignore
[13:55:47] <_methods> seems like nist made some standards
[13:56:52] <_methods> but whatever it give me good lulz
[13:57:12] <amaldo> Anyone here used LinuxCNC with EtherCAT motion controllers?
[13:57:25] <CaptHindsight> _methods: well that's for us old fogeys. You can't trust old people.
[13:57:33] <_methods> http://www.thinkcomputers.org/20-of-the-worst-pc-setups/
[13:59:15] <_methods> some funniez in there
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[14:02:59] <pcw_home> amaldo: yes:
[14:03:01] <pcw_home> http://www.youtube.com/watch?v=yR9rCFavFjU
[14:04:48] <amaldo> pcw_home, very cool video. I have used the igH ethercat master before. Where is the code to try it out?
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[14:05:49] <pcw_home> Probably best to ask Andreas Shiffler on the LinuxCNC forum
[14:06:41] <CaptHindsight> multiple drives from one NIC is nice
[14:07:06] <amaldo> pcw_home, thanks. Found this https://github.com/sittner/linuxcnc but it looks like the last comit was in july 2013
[14:07:24] <pcw_home> one way to check actual hardware jitter on any Mesa card with a stepgen is to set the stepgen up in velocity mode
[14:07:25] <tjtr33> amaldo Andreas Schiffler doesnt log in here but look at his Linuxcnc&Ethercat work on youtube, one of 'em http://www.youtube.com/watch?v=yR9rCFavFjU
[14:07:26] <pcw_home> set the velocity so you get say 5 MHz and then use the DDT comp to get deltas
[14:07:36] <CaptHindsight> http://linuxcnc.org/lucid/emc2/emc2/emc2/index.php/german/forum/24-hal-components/22346-ethercat-hal-driver
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[14:09:08] <tjtr33> a retrofit he did http://walter.roschi.eu/cnc-retrofit/
[14:10:24] <amaldo> tjb1, CaptHindsight : Thanks for the links.
[14:11:12] <CaptHindsight> just think what might have happened if he had access to those new hall effect thingies :)
[14:17:25] <amaldo> :) wait until they discover optical encoders.
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[14:37:39] <amaldo> Gotta go. Thanks for all the help.
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[16:05:39] <JT-Shop> 3,096 miles in 9 days on the GoldWing!
[16:06:40] <jdh> damn
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[16:07:26] <archivist> saw ass
[16:08:06] <JT-Shop> an Advil a day keeps the butt pain away...
[16:09:38] <Jymmm> I thought that was Prep-H
[16:09:50] <Jymmm> or Immodium AD
[16:10:11] <Connor> Jymmm: Depends on the kind of Butt pain...
[16:10:35] <Connor> It some cases, it could be both Advil and Prep-H :)
[16:11:05] <JT-Shop> wearing LD Comforts helps a lot
[16:11:32] <Jymmm> wearing what?
[16:11:44] <JT-Shop> http://www.ldcomfort.com/
[16:11:58] <Jymmm> ah
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[16:31:47] <zeeshan> that was fun
[16:32:13] <zeeshan> .5" depth of cut 1/2" 2 flute carbide end mill, 6061-t6 material
[16:32:28] <zeeshan> aluminum chips were flying everywhere
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[16:39:41] <IchGuckLive> hi all B)
[16:40:28] <IchGuckLive> zeeshan: even more fun is to mill casting resin
[16:41:50] <IchGuckLive> JT-Shop: how is your back after that ride
[16:44:45] <JT-Shop> no problems at all I rode my GoldWing
[16:45:01] <JT-Shop> it's a couch on wheels with a stereo \
[16:45:42] <IchGuckLive> i kow there is a big goldwing meeting here with arpound 1000 menbers every year
[16:46:21] <JT-Shop> that's a bunch of bikes
[16:48:47] <IchGuckLive> we got about 4 harlay shops here as there are >50k US members around
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[17:13:28] <IchGuckLive> hi Tugge ho is the waether up there in finland
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[17:29:17] <IchGuckLive> seen! revo14
[17:29:51] <FinboySlick> IchGuckLive: Doesn't the ! go first?
[17:30:07] <IchGuckLive> ;-)
[17:30:23] <IchGuckLive> seen revo14?
[17:30:37] <IchGuckLive> !seen revo14
[17:30:37] <the_wench> last seen in #linuxcnc 2014-05-25 19:45:42GMT 46:44:53 ago, saying joined chan
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[17:56:12] <Loetmichel> *grrr* i think my gaming PC needs a bigger PSU. Just got THREE half-second brownouts (because of a nearby thunderstorm) ... gaming PC : three reboots. Bitcoin miner PC, on the same wall socket: just mining away like nothing happened ?!?
[17:57:49] <FinboySlick> Loetmichel: They must both keep the room pretty warm.
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[17:59:21] <IchGuckLive> FinboySlick: its hevy thunder here
[17:59:33] <IchGuckLive> lots of houses floddes
[18:00:14] <FinboySlick> IchGuckLive: Doesn't feel like summer is comming here either. It's almost as if England exported its weather to the colonies.
[18:00:17] <IchGuckLive> after a long drought the ground can not take that amound of water in short time
[18:00:38] <IchGuckLive> no it has been so nice
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[18:05:53] <CaptHindsight> are there any small PLC's that have a really easy to use UI? No ladder, no RLL
[18:06:23] -!- md-2 has quit [Ping timeout: 255 seconds]
[18:07:57] <CaptHindsight> for simple process control, you have everything programmed, but the non-programmer user and change some IO's, like ON/OFF times , how fast an output might flash (lamp) etc etc
[18:08:29] <IchGuckLive> CaptHindsight: LOGO or automotion DL6
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[18:10:53] <FinboySlick> CaptHindsight: While you're around. You think a Samsung Galaxy S4 OLED screen would be strong enough to work with a resin 3D printer? The print envelope would be small but the resolution is not half bad.
[18:11:42] <CaptHindsight> IchGuckLive: those are too complex, I'm looking for something like a light version of Lab View that runs on a desktop
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[18:12:06] <CaptHindsight> FinboySlick: yes and no :) ....
[18:12:23] <IchGuckLive> CaptHindsight: connected by usb how many IO
[18:12:46] <CaptHindsight> the issue with LCD screens like those is that they have 3 sets of pixels
[18:13:14] <FinboySlick> CaptHindsight: It's OLED though I assume that it has 3 sets of pixels too.
[18:13:24] <CaptHindsight> yes RGB
[18:14:10] <CaptHindsight> there are photoinitiators for RED but they also make the resin sensitive to heat
[18:14:35] <CaptHindsight> so they have to be refrigerated or activated right before use in a dark area
[18:15:05] <FinboySlick> OK. So to be practical, you pretty much need UV.
[18:16:05] <CaptHindsight> you could just use the Blue light though but then the next hurdle is how do you expose the resin since the blue pixels are interlaced with the R and G leaving a space
[18:16:36] <CaptHindsight> a monochrome LCD make it easier
[18:16:49] <CaptHindsight> but there is a limited selection
[18:17:04] <FinboySlick> And I imagine they let a lot of light seep through.
[18:17:06] <CaptHindsight> but there are some high dot pitch mon lcd's for medical imaging
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[18:17:20] <CaptHindsight> no they work fine
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[19:13:41] <CaptHindsight> FinboySlick: not mine but here's one at work http://www.youtube.com/watch?v=MS1t3tHsx9k
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[20:32:23] <Deejay> gn8
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[20:46:37] <CaptHindsight> has anyone ever tried to use http://oscada.org with linuxcnc?
[20:56:42] <_methods> looks interesting
[20:56:45] <_methods> very russian
[20:58:50] <CaptHindsight> I looked at comedi with linuxcnc http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Debian_Etch_Compile_RTAI#Comedi_support_for_RTAI
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[21:18:30] <CaptHindsight> http://www.openplcproject.com/ the first fully open source Programable Logic Controller
[21:20:15] <Tom_itx> looks like JT-Shop might be getting some weather.
[21:24:11] <Tom_itx> CaptHindsight is that your handiwork?
[21:24:38] <CaptHindsight> heh, nope, just spotted it in my searches today
[21:24:52] <Tom_itx> i thought you were working on some such board
[21:26:29] <CaptHindsight> depends on how well all the allwinner linux support turns out
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[21:26:53] <Tom_itx> not sure i'm crazy about their socket choice
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[21:28:01] <JT-Shop> Tom_itx, dang near got caught on the BlueWing by it when I went to town to gas it up
[21:28:42] <Tom_itx> i was checking the weather here since it just started raining as i neared home. seems you're gonna get more than us
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[21:36:46] <JT-Shop> looks like the worst has passed but who knows... I think I'll wait to put out the grass seed
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