#linuxcnc-devel | Logs for 2015-02-27

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[00:54:46] <skunkworks> well - isn't that pretty... http://electronicsam.com/images/KandT/testing/Screenshot%20from%202015-02-26%2018:50:45.png
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[00:59:24] <skunkworks> micges: still seeing massive acc/vel violations...
[01:03:48] <skunkworks> (just running line segments - 3d_chips)
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[01:06:06] <skunkworks> I am using my axis config with max jerk set to 1000..
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[01:08:23] <skunkworks> at max jerk of 100 it runs pretty slow but doesn't seem to violate
[01:09:03] <skunkworks> I do see the vel readout on the screen go negative some times...
[01:09:13] <skunkworks> which seems a bit odd
[01:09:23] <PCW> yeah I have accel and jerk set up pretty high at have big glitches
[01:09:30] <PCW> and have
[01:09:35] <skunkworks> nope - still violats at a max jerk of 100
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[01:16:37] <skunkworks> PCW: good program to test... http://electronicsam.com/images/KandT/testing/spreadsheet2.ngc
[01:17:01] <skunkworks> (it has arcs so probably not on the jerk branch)
[01:18:05] <PCW> Thanks will try for normal testing
[01:18:15] <skunkworks> it scales and rotates...
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[01:44:16] <KGB-linuxcnc> 03Michael Geszkiewicz 05micges/master/limited_jerk 598b5f6 06linuxcnc 10src/emc/jerk_tp/jerk_tp.c jerk_tp: fix calculations when we got tiny values for stages cycles count * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=598b5f6
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[02:13:20] <skunkworks> zlog
[02:13:20] <zlog> skunkworks: Log stored at http://tom-itx.no-ip.biz:81/~tom-itx/irc/logs/%23linuxcnc-devel/2015-02-26.html
[02:17:53] <micges> skunkworks: PCW found first bug ;)
[02:18:08] <skunkworks> micges: did the configs help?
[02:18:57] <micges> fighting with arc now, but I'll test them now
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[02:22:36] <micges> skunkworks: got it running, thanks
[02:25:36] <micges> I don't see any violations on simple programs, will check more after arc will be fully operational
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[02:28:10] <micges> skunkworks: but I see wrong calculations
[02:28:27] <skunkworks> ?
[02:29:12] <micges> on jerk code
[02:29:33] <skunkworks> ah
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[02:46:49] <skunkworks> micges_: the last push seems to fix the issue at 100 max jerk but 1000 still has a ton of violations
[02:48:17] <micges_> skunkworks: yeah I've done too little tests with variety of ini file parameters, working on this now
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[02:53:37] <micges_> 'nite
[02:55:04] <skunkworks> night!
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[03:31:43] <Tom_itx> PCW, 6I24.zip not found on server...
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[03:35:17] <Tom_itx> i bet it's the same as the 5i24
[03:35:41] <Tom_itx> pcw_home, 6I24.zip not found on server...
[03:37:23] <pcw_home> same as 5i24
[03:37:29] <Tom_itx> yeah
[03:38:22] <Tom_itx> do you select 5i24.ucf or 6i24.ucf for it?
[03:40:56] <pcw_home> 6I24.ucf
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[11:22:33] <skunkworks> http://www.pmdx.com/PMDX-411
[11:23:07] <skunkworks> steves_logging: will this work with linuxcnc? ;) cool product.
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[14:14:52] <cradek> > You are allowed to request replacement licenses for failed computers
[14:16:15] <skunkworks> from debian? ;)
[14:16:44] <cradek> no, sorry, I veered into the dark part of the web for a while there
[14:17:13] <skunkworks> heh
[14:19:09] <cradek> I like how carefully-worded that is. it makes no promises about whether you'll actually get to keep using the software you bought if your computer fails.
[14:19:18] <cradek> when
[14:21:36] <skunkworks> right
[14:24:50] <pcw_home> In my innocence I thought you were allowed to request anything
[14:27:12] <skunkworks> and it starts.. http://www.cnczone.com/forums/tormach-pathpilot-/261104-arc-radius-small.html
[14:30:35] <cradek> hmm, just mayyyybe he should've posted the snippet of gcode that errored
[14:30:55] <cradek> but he wanted to get some discussion going, instead
[14:40:33] <seb_kuzminsky> tell him to upgrade to 2.7.0~pre4, it increases the arc radius tolerance to the "your cam is sloppy" level of 0.0028 inches ;-)
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[14:40:39] <skunkworks> Does 2.7 allow you to set the tollerence now? heh ok
[14:40:55] <skunkworks> can you change it?
[14:41:05] <skunkworks> (arc eyes changes (or whoever)
[14:41:07] <cradek> you can make it tighter than the default
[14:41:28] <cradek> the default works for gcode that is rounded to .001in or .01mm
[14:41:36] <seb_kuzminsky> i bet it's not in the docs though
[14:42:16] <cradek> IMO there's no reason to ever change the value from the default
[14:42:24] <skunkworks> agreed
[14:42:44] <cradek> I wonder how tormach is going to release updates. I understand they have eschewed normal debian packaging.
[14:42:59] <seb_kuzminsky> if you're working on very small parts and you want ther interpreter to tell you when you fat-finger the arc center/endpoints?
[14:43:23] <cradek> hm, maybe for edm of very tiny things
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[14:43:35] <cradek> wonder what all gets weird if you do very tiny things
[14:43:57] <seb_kuzminsky> cradek: tormach updates? http://fc07.deviantart.net/fs71/i/2014/084/2/7/w13_artifact__somebody_else_s_problem_field_by_lupinkurt-d7bl8az.png
[14:43:57] <cradek> I always make the mistake of only thinking about "normal" machining
[14:44:13] <archivist> I think small and avoid cam :)
[14:44:17] <cradek> seb_kuzminsky: haha "loose interest"
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[14:44:31] <cradek> jeez
[14:44:36] <cradek> "loose interest in the feild"
[14:44:49] <seb_kuzminsky> the device is working well, clearly!
[14:44:56] <cradek> yargh
[14:45:00] <cradek> brb
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[14:58:34] <skunkworks> http://api.viglink.com/api/click?format=go&jsonp=vglnk_142504911682717&key=8fc203c6d53cfcf639464b616dec43af&libId=i6np5leg010004q8000DAi61s7jb9&loc=http%3A%2F%2Fwww.cnczone.com%2Fforums%2Ftormach-personal-cnc-mill%2F259506-tormach-17.html&v=1&out=http%3A%2F%2Fwww.tormach.com%2Fuploads%2F897%2FUM10087_PCNC1100_BETA_5-7-pdf.html&ref=http%3A%2F%2Fwww.cnczone.com%2Fforums%2Ftormach-personal-cnc-mill%2F259506-tormach-18.
[14:58:34] <skunkworks> html&title=Just%20In%20Tormach%20News%20-%20Page%2017&txt=http%3A%2F%2Fwww.tormach.com%2Fuploads%2F897%2FU...A_5-7-pdf.html
[14:58:37] <skunkworks> uch
[15:02:47] <skunkworks> www.tormach.com/uploads/897/um10087_pcnc1100_beta_5-7-pdf
[15:03:30] <skunkworks> pcw_home, do you have a 'how to' for getting the latest -rt kernel?
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[15:04:34] <pcw_home> https://rt.wiki.kernel.org/index.php/RT_PREEMPT_HOWTO
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[15:08:31] <pcw_home> available patch sets:
[15:08:32] <pcw_home> https://www.kernel.org/pub/linux/kernel/projects/rt/
[15:11:25] <skunkworks> you used the 3.18.7-rt2?
[15:11:43] <pcw_home> I used rt1
[15:15:19] <skunkworks> huh - so linuxcnc really does have similar devices now (except usb) for 'motion devices..' The 7i92 is pretty close to ethernet smooth stepper
[15:15:40] <skunkworks> (other than 1000 times better :) )
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[15:22:06] <pcw_home> well maybe not 1000 times better...
[15:22:08] <pcw_home> better because all the complex bits are in linuxcnc/hal where they are easy to get to and debug
[15:23:30] <skunkworks> I think ESS is in effect 3 printer ports.. but the 7i92 has a lot more expandablillity..
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[15:25:22] <pcw_home> I have gotten so spoiled by having all pins interchangeble and not having to deal with dumb ucontroller peripherals That I dont think I could ever go back
[15:28:59] <pcw_home> (to ucontrollers vs FPGAs)
[15:29:01] <seb_kuzminsky> skunkworks: wow, that's a great introduction
[15:29:43] <skunkworks> they go into o-words also... kinda neat
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[15:37:47] <pcw_home> micges_: latest patch fixed the g1 errors
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[15:39:18] <cradek> Grab the Maxvel slider again and slowly increase the allowed velocity (see Figure 5.10). Bring
[15:39:21] <cradek> the velocity back down to zero when you get close to the part and double check the values
[15:39:24] <micges> pcw_home: that's good
[15:39:24] <cradek> in the DROs.
[15:39:26] <cradek> YES
[15:39:50] <cradek> this is very clueful
[15:40:35] <micges> pcw_home: I've just back from real machine testing
[15:41:26] <micges> skunkworks: found few minor bugs but arcs and blending works, later I'll push changes to repo
[15:42:59] <micges> machine at 60m/min / 1g acc ad 100k jerk have ultra smooth path even on g1/g1 at 170 deg angles
[15:44:45] <pcw_home> I noticed an improvement in stepgen performance (lower ferror magnitudes)
[15:44:46] <pcw_home> limited jerk papers over the fact that the accel used for feed forward is 1 cycle late
[15:46:52] <micges> how so 1 cycle late?
[15:47:28] <micges> I saw everywhere current pos - latest pos to calc curr vel
[15:48:20] <pcw_home> because its done in hal with differences of velocity
[15:48:40] <micges> right
[15:49:23] <cradek> now that I'm on page 84 I see they've totally forked the documentation too. wow they've bitten off big chunks.
[15:52:59] <cradek> > The parameter values are absolute machine coordinates in the native machine units of inches.
[15:53:11] <cradek> huh are they selling only inch machines?
[15:53:33] <pcw_home> thats... odd
[15:53:40] <skunkworks> micges, 30in/s^2 with >100 causes all kinds of violations... If I up the acc to 400in/s^2 errors go away...
[15:54:21] <pcw_home> 1G is where to be
[15:55:17] <micges> yeah code is only for fast machines ;)
[15:55:27] <skunkworks> heh
[15:55:33] <micges> skunkworks: thanks I'll check it too
[15:56:41] <skunkworks> well 400in/s^2 and 100k jerk also has a ton of violatoins.
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[15:57:27] <pcw_home> skunkworks: did you pull the latest
[15:57:34] <skunkworks> yes
[15:58:28] <micges> skunkworks: redirect output to a file and send me one when this violations occurs
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[15:58:45] <skunkworks_> v2.7.0-pre4-88-g598b5f6
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[15:59:44] <cradek> they removed mention of coordinate system rotation
[15:59:49] <skunkworks> saw that.
[16:00:34] <skunkworks> they also do some funky stuff like - if you run a program in mm - it keeps that setting until you run gcode explicitly changing it.
[16:03:48] <cradek> I guess we don't have to agree with each of their changes, do we
[16:04:27] <cradek> we'll have some benefit (yay rob!) and some fallout (users complaining to us about PP-specific bugs), but it'll be fine
[16:04:41] <cradek> so far, the benefit really outweighs
[16:06:37] <skunkworks> right
[16:06:54] <pcw_home> Thats certainly my impression (not sure the people that complained about Tormach have any idea how much work is involved in the TP changes)
[16:07:57] <cradek> who's even complaining?
[16:08:34] <skunkworks> people have strong opinions that tormach 'stole' linuxcnc
[16:09:56] <skunkworks> cradek, read through some of the comments.. https://www.youtube.com/watch?v=WqJmBEWnvpk
[16:10:34] <skunkworks> micges, sent you an email
[16:10:48] <cradek> I can't. it's too early in the day for youtube comments.
[16:11:03] <skunkworks> heh
[16:11:21] <cradek> also, I don't really care what you-tubers think
[16:12:31] <cradek> tuber /tu.ber/ (too'ber) pl. tu'bera, tubers: 1. a swelling or protuberance
[16:12:54] <cradek> 2. a knoblike localized swelling
[16:12:59] <cradek> hahaha
[16:13:01] <cradek> knoblike
[16:13:24] <skunkworks> it sounds like it isn't too early for you.... :)
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[17:19:19] <cradek> what on earth: http://linuxcnc.org/index.php/english/forum/38-general-linuxcnc-questions/28910-make-own-linuxcnc
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[17:21:24] <archivist> erm hard to think up a polite answer for that
[17:21:48] <seb_kuzminsky> "please go study everything for 1 year, then come back with any questions you have"
[17:23:01] <skunkworks> so what current os would run decently on a pentium m laptop with 256mb..
[17:23:25] <archivist> assembler OS
[17:23:48] <skunkworks> with a gui...
[17:24:13] <cradek> I have our debian install running on a 256MB P3 machine, running my lathe
[17:24:17] <cradek> it's a little tight but ok
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[17:24:35] <seb_kuzminsky> that's cool
[17:24:39] <cradek> what do you want to do on it? probably no good for web browsing
[17:24:46] <seb_kuzminsky> i didnt realize x still fit in 256 mb ram
[17:25:03] <archivist> Yggdrasil Linux would just about too
[17:25:05] <cradek> it's surprisingly fine. wouldn't want to fire up iceweasel though
[17:25:21] <skunkworks> yah - that would be the deal.. I might just have to say I don't have anything that will work. (owner wants to repurpose her old laptop for a reletive)
[17:26:03] <archivist> put win 3.11 on it then
[17:26:12] <skunkworks> she wants to facebook
[17:26:23] <archivist> not on that machine
[17:26:25] <skunkworks> that is a verb now - right?
[17:26:27] <cradek> nah
[17:26:37] <cradek> just add some ram and it'll be fine
[17:27:11] <cradek> also, getting relatives hooked on facebook is a disservice to humanity and you shouldn't help with it
[17:27:25] <archivist> one needs to max out the ram for "modern" web sites
[17:30:07] <seb_kuzminsky> install elinks for he
[17:30:10] <seb_kuzminsky> *her
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[17:52:55] <mozmck> haha! +1 cradek
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[18:48:11] <andypugh> Sometimes I don’t understand the question: http://www.linuxcnc.org/index.php/english/forum/38-general-linuxcnc-questions/28910-make-own-linuxcnc
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[18:49:26] <cradek> yeah we puzzled over that one earlier
[18:49:42] <archivist> polite answer or what
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[19:23:08] <cradek> archivist: you did great.
[19:23:46] <cradek> oh wait that was andy
[19:23:49] <cradek> andypugh: you did great.
[19:23:51] <archivist> where what? I did nothing
[19:24:10] <cradek> well, we're all great, to some extent
[19:25:04] <archivist> and now the polite reply, windows is not realtime and will not drive machines well
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[19:25:41] <cradek> not why do you think anyone would want to help you with that?
[19:29:59] <Tom_itx> wtf were you thinking anyway??? more appropriate
[19:31:46] <archivist> reminds me of the "If I wanted to get there I would not start from here" quip
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[21:40:22] <seb_kuzminsky> CaptHindsight: did you see andypugh's slice viewer? sounds like what you and i were talking about the other day.
[21:40:25] <seb_kuzminsky> https://www.youtube.com/watch?v=ChKmIHP7G_U
[21:41:25] <CaptHindsight> oh, that is new
[21:42:39] <CaptHindsight> andypugh: I want to get Linuxcnc to support SLA DLP/LCD printers including handling the SVG's to the projector
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[21:44:06] <andypugh> You can pretty much consider that done :-)
[21:44:46] <andypugh> I am impressed by the speed. Especially as that is running in a VM on my Mac.
[21:45:18] <andypugh> 67 lines of code
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[21:46:25] <andypugh> I would like to find a way to add the Z-height without having to define my own xmal namespace
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[21:47:24] <andypugh> Currently I have to grab the Z-height with “ Z = node.get(“{http://www.bodgesoc.org}Z”) which seems silly.
[21:48:11] <andypugh> The SVG file has “slicer:Z” but xml.etree expands the namespace :-(
[21:48:23] <CaptHindsight> andypugh: where is this hosted?
[21:48:57] <CaptHindsight> and how does it work with the gcode? An Mcode for the images?
[21:50:11] <andypugh> It isn’t hosted anywhere at the moment.
[21:50:22] <andypugh> It’s something I am playing around with for a friend.
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[21:51:08] <CaptHindsight> the next step is to have synchronized motion of other axis during printing, placing inserts, lasers, printheads etc
[21:51:17] <andypugh> There is some VBA code that creates and SVG file from inside Autodesk Inventor, and then a Realtime HAL component that displays the slice that is passed to it on a HAL pin as a Z-height.
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[21:52:29] <andypugh> Sorry. NOT a Relatime HAL comp. a USERSPACE HAL comp
[21:54:31] <andypugh> CaptHindsight: Or you can do it all inside the SVG file, this one here has an embeded script so you get whatever slice you append to the URL: http://www.bodgesoc.org/newfile_script.svg?5
[21:55:38] <andypugh> (If you View Source you will see the XML tags I am using in the SVG)
[21:55:43] <CaptHindsight> it needs to be part of Gcode
[21:56:17] <andypugh> I don’t understand Why, or how, it can be a part of G-code.
[21:57:06] <andypugh> What is wrong with linking a random Axis to the slice height required?
[21:57:18] <andypugh> Or using the G-code analogue output?
[21:58:04] <andypugh> (I haven’t worked out how to choose the input file yet, currently it’s a command-line parameter)
[21:58:51] <CaptHindsight> how do you introduce other operations and motions between displayed slices?
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[21:59:46] <andypugh> I probably need to add a blanking pin.
[22:00:08] <andypugh> (Possibly even an exposure-time pin)
[22:00:09] <CaptHindsight> you also want to set the duration of the image on the projector, the blank time before and after Z motion
[22:01:04] <andypugh> I am just messing about at the moment, I have never even seen a DLP printer.
[22:01:36] <andypugh> But I can iagine that the exposure and blanking might be better done in hardware.
[22:02:45] <andypugh> How critical is the exposure time? Is userspace latency likely to be good enough?
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[22:03:24] <andypugh> Currently my “customer” is using a Windows PC to display the images, so it can’t be that critical.
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[22:03:41] <CaptHindsight> it's very critical
[22:04:30] <CaptHindsight> the exposure time and the time after exposure before you tilt the build surface and after
[22:06:20] <andypugh> I can’t see it being possible to parse and display SVG in the realtime threads.
[22:07:04] <CaptHindsight> a single layer might go like this: move Z, move wiper over surface, wait 1 sec, display image for 0.8 sec, scan printhead XY over surface, scan laser XY over surface, move Z .....
[22:07:14] <andypugh> But I guess the question is whether exposure is critical to the microsecond or millisecond.
[22:07:50] <CaptHindsight> or move a robot arm over the exposed print and place an insert at a given layer
[22:08:10] <CaptHindsight> 0.1 sec for now
[22:08:54] <andypugh> I think that even Userspace can manage that.
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[22:09:25] <CaptHindsight> for a scanning laser it's like cutting speed only in the several meters per second
[22:09:44] <andypugh> So, I could add an exposure-time pin and a “show now” input pin and “exposure over’ output pin.
[22:10:37] <andypugh> This is all just implementationdetails.
[22:11:33] <andypugh> I was only really trying to see if it is possible to have every layer in one SVG file and handle it in reasonable time.
[22:11:43] <andypugh> How many layers in a typical part file?
[22:11:56] <CaptHindsight> anywhere from a few to several thousand
[22:12:22] <andypugh> I guess I should try a more compley model and many more layers.
[22:12:34] <CaptHindsight> if you're printing a part 100mm high with 100um layers, 10K
[22:12:47] <CaptHindsight> well you're ahead of me on the Linuxcnc end
[22:12:58] <andypugh> Does anyone use adaptive layer heights? (there is no point having 1000 identical layers in the SVG)
[22:13:23] <CaptHindsight> sorry meant 10um
[22:13:40] <andypugh> Do you know if there is an accepted standard for the multi-layer SVG file format?
[22:13:55] <CaptHindsight> if you slice it asymetrically then yes you need to print it that way as well
[22:14:10] <CaptHindsight> no
[22:14:42] <CaptHindsight> the software is either closed by the corprate players, or a train wreck by the reprappers
[22:14:49] <andypugh> Not necessarily. My HAL comp chooses the layer closest to the current Z height, so you coulf have two slices 100mm apart and then 1000 slices in the next mm and it would work.
[22:15:31] <andypugh> CaptHindsight: Did you look at my SVG File? (Ignore the script at the beginning)
[22:15:58] <CaptHindsight> the image for each layer just has to match the actual printed Z location/height
[22:16:24] <CaptHindsight> http://www.bodgesoc.org/newfile_script.svg?1
[22:17:14] <andypugh> No, I don’t think there should be any requirement for an exact correspondence between SVG layers and exposure heights.
[22:17:28] <CaptHindsight> I guess you could have some run length encoding to get rid of redundancy
[22:18:11] <CaptHindsight> i think this is getting lost in translation
[22:18:14] <andypugh> The SVG just needs to have a height attribute for each layer, and the printer chooses the best layer to suit the current printer height.
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[22:19:16] <andypugh> My friend is currently slicing every 5um, then exposing 5 frames in sequence every 25 um
[22:20:03] <andypugh> Hmm, perhaps between layers I should display two layers at 50% Alpha?
[22:20:19] <andypugh> (Or, indeed, at proportional Alphas)
[22:20:37] <CaptHindsight> one frame every 5um or 5 different frames at one Z position being every 25um?
[22:21:11] <andypugh> He has SVG slices for every 5um, but he only moves the X every 25um
[22:24:53] <CaptHindsight> ok, so move Z 25um, display image 1, 2, 3, 4, 5, move Z 25um, display 6, 7, 8, 9, 10 etc
[22:25:12] <andypugh> Yes.
[22:25:22] <andypugh> Sort of physical anti-aliasing
[22:26:01] <CaptHindsight> yeah I get it
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[22:34:47] <CaptHindsight> coordinating motion with a printhead or a projector is another project
[22:35:46] <CaptHindsight> the projector might scan over over an area XY syncing video with motion, similar to a printhead
[22:37:23] <CaptHindsight> or use a galvo to steer images from a single projector onto a larger surface
[22:43:34] <PCW> Not sure why they dont use laser scanners from a printer
[22:43:36] <PCW> seems like it woudl be cheaper and better than galvos (though wastes energy like the DLP)
[22:45:35] <CaptHindsight> some do, it's a big patent mess
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[22:46:26] <PCW> all of 3DP is a patent mess
[22:48:37] <CaptHindsight> most of the SLA and DLP printers are slow and used for protos or trinkets
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[22:53:43] <andypugh> CaptHindsight: https://github.com/andypugh/SVG_Slicer
[22:54:23] <CaptHindsight> andypugh: thanks, I'l try it
[22:59:28] <andypugh> I can imagine www.bodgesoc.org accidentally becoming the default namespace for SVG slicers. That would be silly.
[22:59:48] <andypugh> And I have an early start tomorrow, so will be off now.
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[23:06:43] <seb_kuzminsky> hey dgarr
[23:06:59] <dgarr> ?
[23:07:18] <seb_kuzminsky> naw, that's it, just hello
[23:07:37] <dgarr> oh, hi
[23:07:56] <seb_kuzminsky> heh
[23:08:08] <skunksleep> seb_kuzminsky: did you see the email from rob?
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[23:10:09] <seb_kuzminsky> i saw it
[23:10:18] <seb_kuzminsky> i started adding a g33.1 test to the sam branch
[23:11:43] <seb_kuzminsky> i didn't make that branch name-collide with you on purpose :-/
[23:15:38] <skunkworks> :) not a problem
[23:16:26] <skunkworks> my name is capitalized...
[23:16:49] <seb_kuzminsky> whew, so we'll still be able to tell the difference between you and a branch head in our git repo
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[23:20:11] <skunkworks> thank goodness..
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[23:25:33] <PCW> skunkworks: your drunkards dream gcode seems to run fine here ( 4KHz 2400 IPM ~1G)
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[23:29:18] <PCW> not sure I would want to try running that on an Atom
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[23:34:00] <micges> PCW: I have problem with terminal output on atom with rt-preempt and 1kHz :)
[23:34:54] <PCW> Not terribly surprising...
[23:35:08] <skunkworks> micges: did the terminal output make sense?
[23:35:19] <skunkworks> pcw: awesome!
[23:36:01] <PCW> stock 2.7 of course
[23:36:04] <Tom_itx> is the J1800 performance alot better than the D525?
[23:36:11] <skunkworks> yes
[23:36:17] <PCW> Yes about 2/3x
[23:36:31] <Tom_itx> even the mini-itx board?
[23:36:37] <PCW> Yes
[23:36:38] <Tom_itx> i suppose they're the same just no PCI
[23:36:42] <micges> skunkworks: yes
[23:36:49] <PCW> some have PCI
[23:37:32] <micges> there is problem with converting calculated time to servo cycles count, float point once again
[23:37:51] <micges> skunkworks: I working on this
[23:38:03] <skunkworks> nice!
[23:38:41] <micges> skunkworks: with this error you have at least one servo cycle too much at max speed so it leads to overshoot position at end and violations vel/acc
[23:41:02] <PCW> d525 is ~2 beaglebones J1800 is ~4 G3258 is ~16
[23:44:33] <PCW> e8500 core duo is ~8
[23:44:54] <Tom_itx> all 4 run lcnc good?
[23:45:05] <PCW> Yes
[23:45:34] <PCW> Well D525s are awfully slow
[23:46:39] <Tom_itx> i wouldn't know the difference on this sherline
[23:47:48] <PCW> if you use a fancy gui or image2gcode or something you will notice
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[23:51:21] <PCW> or run a servo thread much faster than 1 KHz or a big classic ladder confg...
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