#linuxcnc | Logs for 2014-11-09

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[00:00:21] <jdh> I spent the day diving.
[00:00:28] <ssi> I spent the day driving :(
[00:01:22] <jdh> driving is ok if you are driving to diving.
[00:02:08] <ssi> I wish
[00:02:25] <ssi> I was driving to the dealership to sit in a waiting room for two and a half hours waiting on a service, with a dead cellphone and nothing to do
[00:02:31] <ssi> then driving to my burned out house to move a safe
[00:02:34] <ssi> then driving back down here
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[00:10:50] <jdh> no computers in the waiting room?
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[00:26:15] <Tom_itx> should have taken your charge plug like all the ppl at the airport sitting around the plugs
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[00:27:57] <pcw_home> they new campfire
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[00:49:04] <Jymmm> thats sad
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[05:30:39] <Computer_Barf> I got a grizzley G0704 today
[05:33:00] <Computer_Barf> in the box of extra stuff that the guy that sold it to me came with, there is an arbor , and a drill chuck. They are separate but im not for certain that they go together. The end of the arbor is tapered and fits into the back of the drill chuck, though it doesn't appear to go all the way in.
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[06:22:31] <Connor> Computer_Barf: Yes, it goes with it.
[06:23:12] <Connor> Put the Arbor in the freezer for a several hours.. then.. insert it into the chuck and tap it with a dead blow. or use a 2x4.
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[06:23:46] <Connor> Computer_Barf: and Contracts on getting the mill
[06:23:54] <Connor> Was it new or used?
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[06:30:20] <zeeshan|2> all i gotta say is
[06:30:30] <zeeshan|2> interstellar.. was actually pretty fin good
[06:30:41] <zeeshan|2> pretty damn scientifically accurate
[06:30:43] <zeeshan|2> minus the drama
[06:37:04] <Jymmm> zeeshan|2: how do oyu know the drama wasn't accurate?
[06:37:40] <zeeshan|2> lol
[06:37:46] <zeeshan|2> i guess it was to some degree
[06:37:48] <zeeshan|2> they got the timing right
[06:37:59] <zeeshan|2> the in blackhole event was all speculation
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[06:38:26] <Jymmm> zeeshan|2: how do you know it wasn't accurate?
[06:38:41] <zeeshan|2> i guess i don't :)
[06:38:50] <Jymmm> zeeshan|2: otay panky!
[06:39:07] <zeeshan|2> it's one probable theory of a black hole :)
[06:39:23] <Jymmm> blak holes suck is another
[06:39:50] <zeeshan|2> we've observed blackholes eating light for dinner
[06:39:52] <zeeshan|2> and breakfast
[06:40:00] <zeeshan|2> pretty good evidence they eat :P
[06:40:16] <Jymmm> not necessarily
[06:40:49] <zeeshan|2> on a nother note
[06:40:58] <zeeshan|2> do you know einteins space-time fabric intrepration?
[06:41:08] <Jymmm> maybe they just et carbon and poop out diamonds and stuff?
[06:41:13] <zeeshan|2> thats true
[06:41:24] <zeeshan|2> then we can have cheap diamond lathe inserts
[06:41:25] <zeeshan|2> :D
[06:41:41] <Jymmm> shit inserts
[06:42:07] <zeeshan|2> https://www.flickr.com/photos/128539016@N05/15746739912/
[06:42:14] <zeeshan|2> i got most of my stuff mounted
[06:42:15] <zeeshan|2> non control stuff
[06:42:21] <Jymmm> Curious, do black holes poop like bunny turds?
[06:42:22] <zeeshan|2> i think the 3 fans is a bit overkill
[06:42:32] <zeeshan|2> Jymmm: poop opoop poop
[06:43:01] <Jymmm> many all the planets in the galaxy and just blak hole turn balls?
[06:43:05] <Jymmm> maybe*
[06:43:13] <Jymmm> turd*
[06:48:41] <zeeshan|2> lol
[07:14:49] <XXCoder> zeeshan|2: just watched it too
[07:14:52] <XXCoder> damn its hella gfood
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[07:53:19] <zeeshan|2> XXCoder: yea man!
[07:53:25] <zeeshan|2> its so well done
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[07:57:37] <archivist> hmm DNS and Bind on the shelf
[07:58:22] <archivist> are you allowed indoors on the carpet with that?
[07:59:11] <zeeshan|2> haha
[07:59:14] <zeeshan|2> thats such an old book
[07:59:27] <zeeshan|2> i think i bought it in 1998
[07:59:31] <zeeshan|2> or 199
[07:59:32] <zeeshan|2> 99
[08:00:19] <archivist> I got the 2001 ed :)
[08:00:19] <zeeshan|2> archivist: my gf asked me today
[08:00:29] <zeeshan|2> "how long will you have all your boxes in here?!?!"
[08:00:30] <zeeshan|2> im like
[08:00:33] <zeeshan|2> "a couple weeks haha"
[08:00:34] <zeeshan|2> :D
[08:00:44] <zeeshan|2> lemme snap a shot of what it looks like right now
[08:00:52] <zeeshan|2> i'd move it all to the garage, but that means i gotta heat it
[08:01:07] <archivist> I run DNS here :)
[08:01:42] <zeeshan|2> nice
[08:01:47] <zeeshan|2> i totally forgot what sin that book
[08:01:51] <zeeshan|2> i think i was trying to configure bind
[08:01:54] <zeeshan|2> to run a dns server
[08:02:22] <zeeshan|2> https://www.flickr.com/photos/128539016@N05/15560767500/
[08:02:24] <archivist> I run it hear at a customers and a friend has the third
[08:02:25] <zeeshan|2> disaster zone
[08:02:37] <zeeshan|2> archivist: cool :D
[08:02:58] <zeeshan|2> i left her some space
[08:03:02] <zeeshan|2> to access the dresser
[08:03:03] <zeeshan|2> lol
[08:03:16] <archivist> too much visible carpet error at line one
[08:03:30] <zeeshan|2> ?!?!
[08:05:22] <archivist> not enough stuph covering teh floor
[08:05:28] <zeeshan|2> haha
[08:05:40] <zeeshan|2> i hate working on carpet
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[08:05:50] <zeeshan|2> because ifeel like ill statically discharge on something
[08:05:54] <zeeshan|2> i try to stay still :D
[08:06:34] <archivist> you could run an earth cable to the cases
[08:06:39] <Deejay> moin
[08:06:42] <zeeshan|2> where would it go to?
[08:06:45] <zeeshan|2> the wall plug?
[08:06:50] <archivist> yes
[08:06:58] <zeeshan|2> good idea
[08:07:26] <zeeshan|2> work has stopped for the night
[08:07:33] <zeeshan|2> i need a 23x23" mounting plate
[08:07:40] <zeeshan|2> i thought i had an extra one
[08:07:41] <zeeshan|2> but i cant find it
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[12:39:05] <jdh> I have teh 1994 version
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[12:48:31] <taiden> hey all
[12:52:53] jthornton_ is now known as jthornton
[12:54:04] <taiden> what do you guys think of the xylotex 3 axis kits?
[12:55:14] <taiden> i've always been a g540 user but i'm not a fan of 10 microsteps and the price is quite a bit more
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[13:07:22] <jthornton> I prefer the G251X over the G540 for a low voltage stepper driver
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[15:03:38] <CaptHindsight> http://www.washington.edu/news/2014/11/05/uw-study-shows-direct-brain-interface-between-humans/
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[15:37:31] <CaptHindsight> here's a TI SOC with fast ARM cores, a decent GPU and PRU's http://linuxgizmos.com/beagleboard-x15-features-dual-core-cortex-a15-sitara/
[15:39:33] <CaptHindsight> I wonder if the BeagleBoard-X15 will priced high and only made in short runs like the Panda
[15:40:14] * jthornton finally got the entities from a dxf file into a python list
[15:40:30] <CaptHindsight> http://files.linuxgizmos.com/ti_am572x_block2.jpg
[15:40:32] <jthornton> now to find the matching xy points I think
[15:41:18] <CaptHindsight> http://files.linuxgizmos.com/ti_am572x_block1.jpg
[15:41:33] <pcw_home> powerVR GPU Yuck
[15:41:51] <ssi> jthornton: what are you working on?
[15:42:05] <CaptHindsight> yeah and will probably cost more than an x86 mini-itx board
[15:42:47] <jthornton> messing about with a wild ass idea to make a G code generator
[15:42:54] <jthornton> from a dxf file
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[15:44:38] <ssi> I've been wanting to do something like that for awhile
[15:46:35] <jthornton> the hardest part was determining when I was at the end of an entity, I had to test for space space zero
[15:46:54] <jthornton> but ended up using if line == ' 0\r\n':
[15:47:04] <CaptHindsight> whats the current workflow with DXF? CAD --> DXF --> CAM --->Gcode
[15:47:25] <jthornton> dxf == cad
[15:47:47] <CaptHindsight> yes I was just representing the tool and it's output and input
[15:47:54] <jthornton> ok
[15:48:11] <jthornton> yea if it is my mill and no if it is my lathe usually
[15:48:15] <CaptHindsight> CAD --> CAM :)
[15:50:41] <jthornton> on my lathe I use ngcgui so I can skip the cam g code part
[15:52:52] <jthornton> ssi, you want the python I have so far?
[15:53:20] <jthornton> 70 lines to collect the entities from a dxf file
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[15:55:45] <jthornton> I like this one lol "since light travels faster than sound, some people appear bright until they speak"
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[16:12:35] <Tom_itx> jthornton the thing about that interpreter is handling things like pockets and multiple offset passes etc
[16:12:51] <JT-Shop> the next challenge is to sort the list by sequential start and end points I assume
[16:13:15] <JT-Shop> which interpreter?
[16:13:26] <Tom_itx> the one you're working on
[16:13:40] <Tom_itx> generator *
[16:14:33] <Tom_itx> you could do the profile but what about material removal up to the profile and things like lead in / out moves?
[16:14:41] <ssi> jthornton: yeah, I'd like to mess with it
[16:14:43] <ssi> probably won't be today tho
[16:14:51] <Tom_itx> sounds interesting though
[16:15:42] <JT-Shop> I'm thinking about plasma G code atm, but yes once you have all the entities you could do anything
[16:15:57] <Tom_itx> well that would be alot easier i suppose
[16:16:25] <Tom_itx> having the path with no tool offset direction etc would simplify it
[16:16:34] <JT-Shop> part 1 is done, reading the dxf file and extracting the LINE ARC and CIRCLE entities into a list of dicts
[16:17:14] <JT-Shop> to start you could draw the offset I suppose
[16:18:28] <JT-Shop> one thing that plasma cam does is read the layers so you can pick inside or outside offset for each layer
[16:18:30] <Tom_itx> have a look at eagle's gcode.ulp file
[16:18:48] <Tom_itx> it might help a bit
[16:18:55] <JT-Shop> what is it?
[16:18:57] <Tom_itx> i can post it if you don't have eagle
[16:19:06] <Tom_itx> eagle is a schematic / board program
[16:19:17] <JT-Shop> I don't think I have eagle any more
[16:19:24] <Tom_itx> i'll upload it
[16:19:29] <JT-Shop> olk
[16:20:29] <ssi> there's a mustang out flying around here today
[16:20:36] <ssi> not the same one that was up in kennesaw last weekend
[16:21:12] <Tom_itx> http://tom-itx.ddns01.com:81/~webpage/JT-Shop/
[16:21:12] <JT-Shop> full size P51?
[16:21:15] <ssi> yeah
[16:21:24] <Tom_itx> the gcodedrl is just for holes
[16:21:28] <Tom_itx> the other one does profiles
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[16:22:53] <JT-Shop> thanks, I'll have a look at it in a bit... gluing up some corner trim for the shop siding
[16:23:10] <Tom_itx> np
[16:24:53] <renesis> jt-shop: neat book http://tom-itx.ddns01.com:81/~webpage/JT-Shop/HeatTreatingDataEBook.2011.pdf
[16:25:10] <Tom_itx> renesis he has that
[16:25:19] <Tom_itx> i uploaded it for him one day
[16:25:20] <renesis> i know its his link
[16:26:42] <Rab> Tom_itx, what does gcode.ulp do? Is it the same thing as pcb-gcode?
[16:26:55] <Tom_itx> pretty much
[16:28:36] <renesis> tom_itx: oh it was your link
[16:28:39] <Tom_itx> i've only used the drill one but heard others have used the profile ver
[16:28:41] <renesis> tom_itx: neat book
[16:28:45] <Rab> I'm looking for a way to plot Eagle paths straight to gcode, without isolation, to mill a positive rather than a negative (not for PCBs, naturally).
[16:29:03] <Tom_itx> you could look it over, it might do what you want
[16:29:10] <Rab> Yeah, I'll take a look.
[16:29:17] <Tom_itx> or mod it
[16:29:59] <renesis> rab: does it need to be eagle?
[16:30:09] <renesis> or you just want cam without paying
[16:30:16] <Rab> renesis, I just want cam without paying.
[16:30:17] <Tom_itx> eagle is free but limited
[16:30:21] <cpresser> Rab: export do .dxf (type 'run dxf')
[16:30:37] <renesis> rab prob has more than free eagle
[16:30:40] <cpresser> then use any cam to convert dxf to gcode
[16:30:47] <Rab> Yeah, I have the nonprofit license.
[16:31:00] <Rab> cpresser, ahh, thanks for the tip.
[16:31:31] <Rab> I use Inkscape now for 2D stuff, but I also have some faceplates and other vector art I did in Eagle that I'd like to mill.
[16:31:32] <Tom_itx> JT-Shop i also uploaded the dxf.ulp in case it might help explain parts of the other one
[16:31:37] <renesis> didnt cradek have some sort of autocad plugin
[16:31:42] <Tom_itx> i've not used dxf.ulp myself
[16:32:07] <Rab> I guess I could export PDF and import that to Inkscape.
[16:32:20] <renesis> inkscape wont eat dxf?
[16:32:28] <Rab> But if there's a way to do it straight from Eagle...
[16:32:30] <archivist> forget PDF
[16:33:12] <Rab> Oh wow, Inkscape totally does DXF!
[16:33:16] <renesis> rab: have you tried pcb-gcode with toolsize set to tiny and minimim thickness lines?
[16:33:26] <Rab> renesis, I haven't tried anything. ;)
[16:33:33] <renesis> even doing negatives, itd be doing paths on top of each other
[16:36:18] <ReadError> wow seems all of stonertronics from efnet has migrated here ;p
[16:36:19] <ReadError> j/k
[16:36:44] <Rab> renesis, that still doubles up on paths, which might not be desired behaviour depending on the material etc. It's the TTF problem: TrueType fonts define an outline, not a path, so if you want to engrave TTF you have to make two passes over the letter even if you reduce the area to 0.
[16:37:22] <renesis> so you make 4 paths over the letter
[16:37:35] <renesis> might be beneficial depending on material
[16:37:55] <renesis> http://www.gsimple.eu/features.html
[16:38:17] <renesis> this guy doesnt have any images of his program that i can find, bit scary
[16:38:31] <Rab> Might be, but it's also time-consuming. I've found engraving already takes a long time even if paths are optimized; plunges for each stroke, and so on.
[16:40:08] <renesis> needs moar g0
[16:41:12] <renesis> http://www.cambam.info/
[16:41:13] <Tom_itx> set the z return height low .050" etc saves time
[16:41:31] <Rab> renesis, I exported this design from Eagle -> PDF -> Inkscape -> Gcodetools and it ended up being like 40K lines. LinuxCNC sim took many minutes and kept dying in the job (just stopped moving). I definately need better CAM. ^_^
[16:41:32] <renesis> 40 functional sessions, 500 lines after, i kinda want to try that
[16:42:16] <Rab> Tom_itx, I do...to .050, actually!
[16:42:47] <renesis> you could just juarez mastercam
[16:42:52] <renesis> it works
[16:43:07] <Rab> Sure, but I'm trying to keep a Lunix toolchain.
[16:43:24] <XXCoder> yeah illegal is more fun :P
[16:44:36] <ReadError> cambam is great
[16:45:28] <renesis> cool
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[16:48:14] <renesis> rab: cambam is only $150
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[16:48:56] <Rab> renesis, pro small-business CNC dudes seem to love it...I could just take the easy way out.
[16:49:29] <renesis> its fully functional for free 40 times
[16:49:53] <Rab> CamBam, Mach3, done.
[16:49:57] <Rab> ;)
[16:50:05] <ReadError> did you just say the M word?
[16:50:06] <renesis> mach3 sucks
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[16:50:30] <ReadError> cambam is good for 2.5D in particular
[16:50:37] <renesis> that shit would dwell the machine if you moved the mouse cursor too fast
[16:50:50] <Rab> Just kidding, I'm going to install Debian and try to get PyCAM or similar working.
[16:50:50] <renesis> readerror: thats mostly what i want
[16:51:02] <ReadError> renesis its great for that then
[16:51:06] <ReadError> the tabs are nice
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[17:05:59] <Tom_itx> Rab i didn't make it past the 3rd one before i uninstalled it
[17:06:21] <Tom_itx> but i'm used to my pro cad cam package
[17:06:39] <Rab> Tom_itx, CamBam?
[17:06:42] <Tom_itx> yeah
[17:06:49] <Tom_itx> i loaded it to help someone with a post
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[17:20:46] <somenewguy> PetefromTn_: did you write the faceing program in python?
[17:28:23] <Rab> All right, got PyCAM instlled.
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[17:37:33] <jthornton> wow converting from a dxf arc to G code will be fun
[17:38:05] <XXCoder> how good is pucam?
[17:38:07] <XXCoder> py
[17:38:11] <archivist> better to make a drawing direct in gcode program :)
[17:38:21] <skunkworks> jthornton: what are you working on?
[17:38:55] <jthornton> just messing around reading a dxf file then converting it to G code
[17:39:18] <jthornton> I've got reading the dxf into a list of dicts down pat
[17:39:31] <jthornton> lines are easy
[17:40:04] <jthornton> here is how the arcs are stored http://pastebin.com/Uh8y3c9u
[17:41:15] <skunkworks> neat
[17:41:30] <skunkworks> have you looked at dxf2gcode?
[17:41:47] <skunkworks> it looks to be writen in python
[17:42:31] <jthornton> yes, but it is real complicated
[17:42:40] <skunkworks> the little I have played with it - it looks promisning. - it does things like combine profile segments and allows you to change direction and add cutter comp.
[17:42:59] <jthornton> I've never got it to work
[17:43:04] <skunkworks> oh
[17:43:54] <skunkworks> http://electronicsam.com/images/KandT/testing/Screenshot%20from%202014-10-20%2023:05:22.png
[17:44:14] <skunkworks> http://electronicsam.com/images/KandT/testing/Screenshot%20from%202014-10-20%2023:08:50.png
[17:44:31] <jthornton> neat
[17:45:19] <jthornton> this is the code to read the dxf into a list of dicts http://pastebin.com/uhN1QHdp
[17:45:23] <jthornton> not long at all
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[17:50:49] <skunkworks> neat - my python that I write looks more like vb...
[17:50:54] <skunkworks> sorry
[17:51:06] <jdh> use cradek's realize format for feeds, tools, etc?
[17:52:09] <skunkworks> you pick the tool per profile (it is part of dxf2gcode) and the tool dictates the feed.
[17:52:14] <skunkworks> iirc
[17:53:52] <Tom_itx> jthornton, i added the dxf.ulp for you too
[17:53:59] <jthornton> hmm seems like all arcs are stored CCW direction for start and end
[17:54:03] <jthornton> thanks Tom_itx
[17:54:05] <Tom_itx> might help with arcs...
[17:54:07] <Tom_itx> dunno
[18:03:05] <PetefromTn_> Jeez man...
[18:03:15] <PetefromTn_> I got a little dilemma here now it seems
[18:03:37] <PetefromTn_> I wanted to get this CNC lathe badly
[18:04:01] <PetefromTn_> so I had to sell off my 12x36 manual lathe to get it.
[18:04:21] <PetefromTn_> Most of the work I do for customers is on the CNC mill
[18:04:49] <PetefromTn_> but since I sold the damn lathe I have had two different people contact me about making some cool parts that would sort of be better made on the lathe
[18:05:08] <PetefromTn_> Either that or they would require a BUNCH of custom 3d toolpathing on the mill
[18:05:38] <PetefromTn_> I am not all that great with the 3d stuff yet I can do it but these are fairly elaborate pieces
[18:05:48] <archivist> check the log, I may have mentioned dont get rid of a manual lathe :(
[18:05:56] <somenewguy> can you compare PyCAM to HeeksCNC?
[18:06:07] <PetefromTn_> so I gotta decide to take on the work or pass until the CNC lathe is here
[18:06:11] <PetefromTn_> er working rather
[18:06:27] <PetefromTn_> or try to do it on the CNC with the more advanced 3d toolpaths
[18:06:32] <archivist> somenewguy, not really completely different methods
[18:06:42] <somenewguy> ok, I haven't ever looked at PyCAM
[18:06:57] <PetefromTn_> yeah I know I should have not sold the lathe but I had to or I would never have gotten the CNC lathe here
[18:07:12] <somenewguy> oh does anyone in here konw how to make a super simple python GUI? or really any gui that will call a python function?
[18:07:22] <PetefromTn_> I wish I knew someone who was REALLY good at 3d toolpathing locally
[18:07:22] <somenewguy> I essentially want to make a calculator, and only spend an hour on it
[18:07:32] <somenewguy> PetefromTn_: who dosnt lol
[18:07:50] <PetefromTn_> I guess I need to become that person or pass LOL
[18:07:56] <somenewguy> although writing stuff for NGCGUI has been fun
[18:08:15] <somenewguy> I have a pretty stellar ramp in routine in the works that should make my paths more effecient
[18:08:44] <somenewguy> do you mean 3d toolpathing from a model, or the theory behind it?
[18:09:34] <PetefromTn_> I mean I can create a 3d model of the part I want, I usually do that anyways even if it is not a real 3d part
[18:10:03] <PetefromTn_> but I am not that experienced with programming the toolpaths especially the finishing paths that are required for that nice surface finish
[18:10:29] <PetefromTn_> and these parts are mostly aesthetic in nature so they have to look damn good.
[18:11:02] <PetefromTn_> I may be able to borrow a lathe from a friends shop to finish them but I gotta check and see. Most of the work I can do on the CNC mill.
[18:11:44] <PetefromTn_> Damn I cannot wait to have that CNC lathe running so this will be a simple process. There are a lot of parts I can make that will be profitable.
[18:12:23] <Tom_itx> even if you get a cnc lathe you will not be able to replace a manual lathe.
[18:12:38] <PetefromTn_> Just need to find some more Gold Pressed Latinum to be able to purchase the motors and drives etc. etc... Oh well at least it is here and I have something to work with.
[18:12:46] <PetefromTn_> how do you figure?
[18:13:19] <Tom_itx> there are parts i can make on a manual lathe quicker and more efficient than on a cnc
[18:13:22] <archivist> I use the manual lathes more than cnc
[18:13:27] <Tom_itx> i can't repeat it easily but i may only need one
[18:13:43] <PetefromTn_> that is precisely why I sold the manual lathe.
[18:13:51] <Tom_itx> but now you need it
[18:14:00] <PetefromTn_> Beleive me I see your point I have been turning manually for a LONG time.
[18:14:11] <PetefromTn_> yeah because the CNC lathe is not working yet
[18:14:44] <PetefromTn_> I have turned literally thousands of parts on manual lathes over the years.
[18:15:26] <PetefromTn_> and the lathe I have here once CNC will be kind of something in between a full blown turning center and a manual lathe which is why I chose it.
[18:15:57] <PetefromTn_> I will probably get another manual lathe at some point
[18:16:17] <PetefromTn_> but I am very excited about seeing the new CNC lathe working and making consistent parts.
[18:17:30] <archivist> a new to me lathe arrived here a few weeks ago, been very useful
[18:17:46] <PetefromTn_> Oh well I gotta contact the customer with a decision about this. I may see what kind of time frame he is under and then decide if I can put together a program for it in 3d millling or not.
[18:17:48] <PetefromTn_> nice
[18:17:53] <PetefromTn_> what kind of lathe did you get?
[18:18:19] <archivist> http://www.collection.archivist.info/searchv13.php?searchstr=lathe+lorch
[18:18:31] <archivist> no leadscrew :)
[18:18:47] <archivist> best for hand turning curves
[18:19:06] <PetefromTn_> almost looks like a wood lathe actually
[18:20:01] <archivist> it ic a clockmakers sort of lathe where you can change topslide to rest quickly
[18:20:29] <PetefromTn_> I can see where making delicate shapes that small it would come in handy for hand turning stuff and polishing tho.
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[18:20:53] <PetefromTn_> I used to do things like that on my manual I sold.
[18:21:20] <PetefromTn_> I had some shop built radius turning tools and arc tools I fabricated and would finish with emery cloth and polishing rouge etc.
[18:24:05] <archivist> this is my grab of the ebay page http://www.collection.archivist.info/archive/mirror/Lorch/lorch.html
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[18:51:12] <somenewguy> pete, aside from manual writing of gcode, what are you currently doing to get a toolpath?
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[18:57:36] <Rab> Anybody have an opinion on bang for the buck of no-name chinese linear bearings/rail on eBay vs used/surplus THK/Thomson/etc? The name-brand stuff isn't that much more expensive...
[18:59:22] <Rab> And robust components, partially worn, seem like they might provide a better value over something that wears in quickly and poorly.
[18:59:46] <XXCoder> sometimes it really dont make all that much difference
[18:59:57] <XXCoder> but dunno when that's true
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[19:06:27] <somenewguy> depends on what you are using it for I guess? a bad bearing can never be made better, buta worn brand name can be replaced piecemeal as you decide you need more accuracy I guess?
[19:06:32] <XXCoder> pop a lsd https://www.youtube.com/watch?v=kBMArUuHXDI
[19:09:01] <XXCoder> somenewguy: if get chinese shit then buy new bearings
[19:09:06] <XXCoder> american made ones
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[19:18:28] <XXCoder> oh https://www.youtube.com/watch?v=GLZdnR7Nkus is what happens after that lsd trip lol
[19:19:50] <XXCoder> oh it cut at end dammit
[19:21:48] <JT-Shop> interesting a dxf file line start point is the end farthest from the WCS center
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[19:53:01] <Computer_Barf> john Connor are you out there?
[19:54:01] <Connor> I dunno about John Connor.. But.. I'm here for a few minutes.
[19:55:10] <Connor> Computer_Barf: What's up?
[19:55:27] <Computer_Barf> did you go with a nema 34 on your z axis?
[19:55:44] <cmorley> somenewguy: gladevcp has a calculator widget. gscreen can make a simple GUI quickly and you can add python calls.
[19:56:02] <Connor> No. I stuck with a 570oz nema 23's all away around. (direct drive)
[19:56:26] <Computer_Barf> Im talking to a guy that makes kits , he can make me a z axis that can fit nema 34 , but already has one for nema 23 ready
[19:56:56] <Connor> Did you buy your G0704 new, or used? and did you see my comment about the arbor and the drill chuck ?
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[19:57:34] <Computer_Barf> no i didn't see your response, its used
[19:57:38] <Computer_Barf> well
[19:58:00] <Computer_Barf> used might not be fair , its a rediculusly unused, used machine
[19:58:08] <Connor> Put the arbor in the freezer for several hours... then remove it and insert it into the juck and smack it good with a dead blow or 2x4
[19:58:52] <Computer_Barf> Nice that makes sense.
[19:59:41] <Computer_Barf> i got it for 900 bucks, with a clamping kit, collet set, vise, bunch of other things
[20:00:03] <Connor> that nice.. and no shipping too.
[20:00:33] <Connor> Looking at it.. does it have 4 bolts that hold the head to the Z-Zaddle ? or just 2 ? (Center and lower)
[20:00:43] <Computer_Barf> yeah. I can't likely do warrenty stuff but I plan on completely invalidating that anyway
[20:00:53] <Computer_Barf> 4
[20:01:10] <Computer_Barf> you mean in the lower back of the machine right?
[20:02:07] <Computer_Barf> man i had no idea how difficult it was going to be to move it
[20:02:11] <Connor> no. the head itself.
[20:02:17] <Connor> the spindle.
[20:02:26] <Computer_Barf> oh i would have to go look
[20:02:46] <Computer_Barf> brb
[20:02:52] <Connor> older versions only had 2 (1 in center and lower) bolts to hold it on.. newer ones have 3 (in circle pattern) + 1 in center
[20:05:22] <somenewguy> dude I just took a trip down memory lane
[20:05:27] <somenewguy> anyone else use CADKEY back in the day?
[20:05:56] <somenewguy> they still exist and do 2 and 3 axis tool path generation
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[20:07:12] <CaptHindsight> Rab: so far any used/surplus bearings in good shape are better than anything I've gotten made in China. Not sure when they will catch up on quality.
[20:07:50] <somenewguy> cmorley: interesting, I'll earmark that for later
[20:08:09] <somenewguy> I just took a stab with tkinter, got my feet halfway under me but decided I don't have the time right now
[20:08:17] <CaptHindsight> Rab: if it made in Taiwan then it's generally on par with western or Japanese suppliers
[20:08:22] <somenewguy> was hoping for 1-2 hours to finish what I need, that smells like a full afternoon lol
[20:11:30] <Computer_Barf> Connor: oh you mean like , bolts to take the spindle off? I didn't take it apart to move it. I can see the state of the machine was manufactured in 2013
[20:11:58] <Connor> okay.. It should have what we call the 3-bolt mod.
[20:12:34] <Computer_Barf> ill check into that when my batteries recharge, yesterday was a long day
[20:12:59] <Computer_Barf> i hauled the thing in the back seats of a 4 door
[20:13:10] <Computer_Barf> didn't have a truck or engine crane
[20:13:34] <Connor> How did you all load it in? I hope you didn't lift using the table.
[20:14:09] <Computer_Barf> no it was done with a board , bunch of people , lots of patience
[20:14:10] <Connor> Could warp or bend the table. :(
[20:14:18] <Connor> OKay. GOOD! :)
[20:14:25] <Connor> Alright.. I have to run for a while.
[20:14:29] <Connor> Shopping and lunch.
[20:14:38] <Computer_Barf> cool , laters.
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[20:23:48] <zeeshan|2> anyone have experience with case fans that are 230vac or 115vac
[20:23:52] <zeeshan|2> impedance protected
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[20:34:31] <CaptHindsight> protected against impedance?
[20:34:44] <zeeshan|2> yea
[20:34:47] <zeeshan|2> im wondering if they need to be fused
[20:35:52] <CaptHindsight> http://en.wikipedia.org/wiki/Electrical_impedance
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[20:37:52] <zeeshan|2> CaptHindsight: i know what impedance is
[20:37:58] <zeeshan|2> just need to know if they neewd to be fused
[20:38:01] <zeeshan|2> its a bit annoying because i have 3 fans
[20:38:05] <zeeshan|2> all 230vac
[20:38:17] <CaptHindsight> are fans that use the term impedance UL listed?
[20:38:18] <zeeshan|2> which will mean i'll need 3x 3 pole fuses to protect them
[20:38:20] <XXCoder> interesting http://hackaday.com/2014/11/07/printing-in-metal-with-a-mig-welder/
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[20:38:26] <Rab> https://www.ia.omron.com/support/faq/answer/45/faq01551/index.html
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[20:39:09] <zeeshan|2> https://www.flickr.com/photos/128539016@N05/15126376003/
[20:39:11] <CaptHindsight> zeeshan|2: I'm also poking fun at the bastardized use of the term impedance with the fans
[20:39:11] <Rab> Sounds like UL-listed impedance-protected fans can be safely operated in a locked condition for 15 days.
[20:39:19] <zeeshan|2> thats the fan
[20:39:51] <zeeshan|2> CaptHindsight: well they say impedance
[20:39:56] <CaptHindsight> after 15 days they explode violently
[20:39:56] <zeeshan|2> cause an AC you deal with complex terms
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[20:40:36] <zeeshan|2> an = with
[20:40:49] <zeeshan|2> im kind of an idiot
[20:40:53] <zeeshan|2> i thought these were 115VAC fans
[20:40:55] <CaptHindsight> fuses are there to protect the conductors
[20:41:05] <zeeshan|2> CaptHindsight: i understand
[20:41:10] <zeeshan|2> but you can use fuses to protect the device too
[20:41:24] <zeeshan|2> so it doesnt go on fire
[20:41:29] <zeeshan|2> which is what im wondering right now
[20:41:33] <zeeshan|2> if the fans all need to be fused
[20:41:47] <zeeshan|2> it adds a shitload of fuse holders :{
[20:42:06] <CaptHindsight> fs you want to size some fuses to limit the current below what the impedance of the fans have ...
[20:42:18] <CaptHindsight> fs/if
[20:42:33] <zeeshan|2> hmm i'm confused
[20:42:39] <zeeshan|2> these fans are .10A draw
[20:42:44] <zeeshan|2> so i was going to put .5A draw fuses
[20:42:54] <CaptHindsight> the fans are supposed to protect themselves from fire if they lock up
[20:43:02] <zeeshan|2> so say a coil shorted inside the motor of the fan
[20:43:04] <zeeshan|2> then the fuse would blow up
[20:43:25] <Rab> zeeshan|2, that sounds absolutely insane. You were talking about fusing your task light, too. Why not run all these accessories to a small breaker?
[20:43:25] <zeeshan|2> if i rely on sizing the fuse for the conductor (14 awg in this case)- that would be 15A
[20:43:37] <zeeshan|2> rabb they are on a main fuse of 15A
[20:43:43] <zeeshan|2> but im afraid that say for some reason something happens to the fan
[20:43:49] <CaptHindsight> a sort to its coil would change their impedance
[20:43:49] <zeeshan|2> ie coil shorts
[20:43:56] <zeeshan|2> the fan will need to see 15A before the fuse goes
[20:44:02] <zeeshan|2> and that might be enough to set it on fire
[20:44:14] <CaptHindsight> sure, if a coil was shorted
[20:44:14] <zeeshan|2> instead of say if i had a 0.5A fuse there
[20:45:09] <CaptHindsight> to really find out what size to use you'll have to decide on how low an impedance the fan will have based on the theoretical short and how hot it will get
[20:45:32] <Rab> zeeshan|2, maybe you need some kind of overtemp/smoke/fire detection in your cabinet.
[20:45:39] <zeeshan|2> rab like
[20:45:42] <zeeshan|2> *lol
[20:45:44] <zeeshan|2> are you trolling me
[20:45:49] <zeeshan|2> cause i'm being a safety nazi
[20:46:07] <CaptHindsight> worst case would be a short right at the start of the windings
[20:46:48] <CaptHindsight> how much current will pass through the conductors, and how hot will they get
[20:47:38] <zeeshan|2> CaptHindsight: why cant you just throw a 0.5A fuse
[20:47:41] <zeeshan|2> for a 0.1A max draw fan?
[20:48:00] <zeeshan|2> so that it doesn't have to see 15A of current draw before the main fuse pops
[20:48:13] <CaptHindsight> why not a 0.2A or 0.3A?
[20:48:22] <zeeshan|2> cause of inrush currents
[20:48:23] <LeelooMinai> Hmm, what should I do with ENBL+/- on stepper drivers and 7i76? Stepper channels do no seem to have outputs for them.
[20:48:30] <CaptHindsight> are you just picking random vales?
[20:48:31] <zeeshan|2> they usually say 125% of fla
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[20:48:57] <zeeshan|2> er
[20:49:02] <zeeshan|2> i should be using a .125A fuse then
[20:49:07] <Rab> zeeshan|2, I'm serious. I don't mean to minimize your concern, but I've never seen equipment constructed in this way. Trying to account for every theoretical fire hazard, you're bound to miss something. A global means of fire detection seems warranted.
[20:49:29] <zeeshan|2> rab so youre b asically say
[20:49:33] <zeeshan|2> plug the fans in
[20:49:35] <zeeshan|2> and call it a day :P
[20:49:56] <zeeshan|2> or if i m worried, go with some crazy fire detection :P
[20:49:59] <CaptHindsight> but then his OCD will kick in
[20:50:03] <Rab> Plus, there could well be fire-hazard failure modes which don't blow the fuse. What then?
[20:50:28] <zeeshan|2> rab like what?
[20:50:36] <CaptHindsight> I think his garage has a Halon system
[20:50:40] <zeeshan|2> fyi
[20:50:45] <zeeshan|2> the reason i'm worried about fires is because
[20:50:48] <zeeshan|2> my old car went on fire
[20:50:53] <Linuxcncnube> Looking for assistance with Dell Inspiron 600m on latency. Huge spike every 16 seconds, great otherwise. New to Debian, thought from RTFM attempts it might be SMI, but it seems to happen at a much shorter interval than I'd expect from reading.
[20:50:57] <zeeshan|2> and now that i think about it, it was completely factory wiring.
[20:51:02] <zeeshan|2> and the fuse failed to go off
[20:51:07] <zeeshan|2> while the wires chaffed away on metal
[20:51:13] <zeeshan|2> and the harness cauight on fire
[20:51:29] <CaptHindsight> Linuxcncnube: did you try all the BIOS settings and kill all power management?
[20:52:07] <Linuxcncnube> I didn't find any power management settings in the bios. Phoenix bios version A16 if that helps
[20:52:09] <CaptHindsight> Linuxcncnube: SMI has no regular interval, it could be every second or once a year
[20:52:29] <CaptHindsight> yeah DEll trims out most settings
[20:52:37] <zeeshan|2> rab
[20:52:42] <zeeshan|2> i'm looking at my house 120VAC fan
[20:52:44] <zeeshan|2> it has no fuse in it :P
[20:52:57] <CaptHindsight> Linuxcncnube: some BIOS are just not suited for RTAI
[20:53:19] <zeeshan|2> LeelooMinai: arent you stepper drives enabled normally?
[20:53:19] <LeelooMinai> I guess I could leave ENBL +/- disconnected, but maybe there's some merit to disable drivers from linuxcnc (?)
[20:53:24] <zeeshan|2> when you power them
[20:53:46] <LeelooMinai> zeeshan|2: Yes, I just wonder if there's some plus of having control over them
[20:53:54] <Rab> Linuxcncnube, try pulling the battery and see if the issue changes or disappears.
[20:53:56] <zeeshan|2> yes there is
[20:54:05] <zeeshan|2> when you hit the machine power off button in linuxcnc
[20:54:07] <zeeshan|2> you can have them disabled
[20:54:15] <zeeshan|2> but it's really not failsafe
[20:54:24] <zeeshan|2> cause asap you remove power from 7i77
[20:54:28] <zeeshan|2> it'll go back to enabled :P
[20:54:58] <CaptHindsight> Linuxcncnube: DELL treats thei buyers like they are nothing but trouble so they minimize the possibility for users causing their support wasted time
[20:54:58] <LeelooMinai> But in this case where could I connect it? To field IO instead?
[20:55:18] <zeeshan|2> no
[20:55:23] <zeeshan|2> for my case it was ena + and gnd
[20:55:33] <zeeshan|2> but i think in your case it will be ena - and...
[20:55:35] <zeeshan|2> lemme see the manualk
[20:55:39] <LeelooMinai> On 7i76?
[20:56:41] <LeelooMinai> There are channels for steppers that have 5V+ GND step -/+ dir -/+, but no enable
[20:57:01] <zeeshan|2> yea wow
[20:57:02] <zeeshan|2> its different
[20:57:04] <zeeshan|2> i thought it was similar
[20:57:54] <LeelooMinai> Hmm, maybe I could use gnd/ +5V for that
[20:57:57] <zeeshan|2> looks like you'll need to pwoer one of your field i/o drivers
[20:57:58] <zeeshan|2> with 5v
[20:58:12] <zeeshan|2> LeelooMinai: that would disable your drives all the time then
[20:58:14] <zeeshan|2> i dont think its switched
[20:58:37] <zeeshan|2> are you talking about +5VP?
[20:58:37] <LeelooMinai> A, right, the enable disables when powerd
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[20:58:56] <LeelooMinai> Since disconnected it's on
[20:58:59] <zeeshan|2> yes
[20:59:08] <zeeshan|2> its retarded
[20:59:16] <zeeshan|2> i did read that you can change something in the drives
[20:59:18] <zeeshan|2> to make it the opposite
[20:59:38] <LeelooMinai> I think I will just leave it unconnected
[20:59:52] <LeelooMinai> I have relay on the PSU anyways
[20:59:55] <zeeshan|2> just make sure you have a way to kill the power to the
[20:59:57] <zeeshan|2> there u go :P
[21:00:14] <LeelooMinai> oki then, thx
[21:00:15] <zeeshan|2> LeelooMinai: the thing i hav ebeen arguing about in here is
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[21:00:23] <zeeshan|2> you dont want to rely on that safety relay all the time
[21:00:31] <zeeshan|2> it's a harsh way of killing power to your stepper drives
[21:00:35] <zeeshan|2> especially when they're under power
[21:00:42] <Linuxcncnube> <Rab>, you nailed it, the battery has been out for about 2 minutes, jitter looks great. Any permanent solution ideas that will allow the battery to stay in?
[21:00:48] <zeeshan|2> the enable is a much "softer" method
[21:00:55] <zeeshan|2> say you're about to detect a crash
[21:01:00] <zeeshan|2> you'd want to disable the drives first
[21:01:12] <zeeshan|2> and if for some odd reason, the drives don't want to disable (unlikely)
[21:01:15] <zeeshan|2> then you press e-stop
[21:01:32] <zeeshan|2> pressing e-stop means you also lose your position
[21:01:46] <zeeshan|2> (if you had feedback)
[21:01:55] <LeelooMinai> Right, well, not sure if it's doable in software, but maybe I could use spare step channel to control emable?
[21:01:59] <LeelooMinai> enable
[21:02:05] <zeeshan|2> use one of your field i/o
[21:02:06] <LeelooMinai> Using step or dir - not sure
[21:02:19] <LeelooMinai> I have 12V there though
[21:02:43] <zeeshan|2> thats okay
[21:02:55] <LeelooMinai> Not sure if driver can take that - it's probably just opto there with a resistor to limit current, could work
[21:02:56] <zeeshan|2> if you go to the field power connector portion in the manual
[21:03:05] <zeeshan|2> you'll see thheres 4 pins for field power
[21:03:10] <zeeshan|2> ugh nm
[21:03:14] <zeeshan|2> they're 8-32V
[21:03:18] <zeeshan|2> so you're SOL!! :P
[21:03:33] <LeelooMinai> well, not necessarily as I wrote:)
[21:03:54] <zeeshan|2> i guess i'd ask pcw :P
[21:03:57] <LeelooMinai> I could add additional resistor there to limit current from 12V
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[21:04:28] <zeeshan|2> i dont know how resistors work in that situation :P
[21:04:39] <zeeshan|2> (with a transistor)
[21:04:56] <LeelooMinai> I think the inputs on the driver are just inputs to optocouplers. So basically infrared diodes that have resistor in series
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[21:05:28] <zeeshan|2> you know more electronics than me
[21:05:30] <zeeshan|2> knowing me
[21:05:43] <LeelooMinai> they are current driven, so as long as I limit it, they can be driven with whatever voltage - that's just my guess, but I could verify it if I open the drivers I guess
[21:05:49] <zeeshan|2> i'd prolly just pass the 12v output signal through a coil
[21:05:58] <zeeshan|2> and on the switch side of the relay have the 5v :D
[21:06:19] <LeelooMinai> That's kind of overcomplicated solution though:)
[21:06:22] <zeeshan|2> hahah :D
[21:06:33] <zeeshan|2> if youve been folllowing the fan conversation
[21:06:37] <zeeshan|2> i like to overcomplicate things :(
[21:06:50] <zeeshan|2> bloody engineering
[21:07:06] <zeeshan|2> "if you aren't comfortable with something, OVER ENGINEER IT!!"
[21:07:44] <LeelooMinai> Finding a good balance that will work should be preferable:)
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[21:08:24] <LeelooMinai> But I wonder why 7i76 does not have those driver disable outputs...
[21:08:33] <LeelooMinai> If there's some reason for it
[21:09:04] <LeelooMinai> I guess I will leave it for now and maybe the "mesa magic man" will know
[21:09:56] <zeeshan|2> haha
[21:10:12] <zeeshan|2> CaptHindsight + Rab
[21:10:14] <zeeshan|2> fu guys!
[21:10:17] <zeeshan|2> im putting a 0.2A fuse!!!
[21:10:26] <zeeshan|2> <3
[21:11:12] <zeeshan|2> if i had 2 damn fans
[21:11:18] <zeeshan|2> i could put them in series
[21:11:33] <zeeshan|2> but it had to be 3 :(
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[21:14:11] <pcw_home> Mesa doesn't have drive disables because its a bad way of doing things (some servo drive have this and thats really insane)
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[21:14:31] <LeelooMinai> pcw_home: So what is the good way?
[21:14:53] <pcw_home> a broken wire or wire shorted to ground should not enable a drive
[21:15:46] <pcw_home> with step drives you can use a spare Step/dir output as a 5V Disable signal if you wish
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[21:16:45] <LeelooMinai> pcw_home: You think it's better than just to leave them enabled all the time?
[21:17:11] -!- moorbo_ has quit [Ping timeout: 265 seconds]
[21:17:32] <pcw_home> possibly, it adds another layer of safety
[21:17:50] <LeelooMinai> ok, thx then - I was not sure if I will be able to reconvigure spare channel for this
[21:18:52] <pcw_home> you would want to chose the output polarity that defaults to disabled at power on and watchdog bite
[21:19:11] <zeeshan|2> LeelooMinai: you have the keling drives right?
[21:19:45] <pcw_home> all IO pins can be GPIO so if dont have all 5 stepgens enabled on a a 7I76, the free ones can be used as outputs
[21:20:42] <LeelooMinai> zeeshan|2: No, some Chinese wantai ones - but probably similar/clones
[21:21:14] <LeelooMinai> Ok, great
[21:21:39] <CaptHindsight> zeeshan|2: how about a 15 day time delay fuse?
[21:21:48] <zeeshan|2> CaptHindsight: !!!
[21:22:08] <zeeshan|2> CaptHindsight: i realize that if i somehow put these fans
[21:22:11] <zeeshan|2> in parallel or series
[21:22:12] <CaptHindsight> fan blade watchdog
[21:22:17] <zeeshan|2> i might be able to tie them to 1 fuse
[21:22:33] <renesis> genius, zeeshan|2
[21:22:41] <zeeshan|2> like with 2 fans its easy
[21:22:43] <zeeshan|2> i just put em in parallel
[21:22:45] <CaptHindsight> probably in parallel
[21:22:48] <zeeshan|2> and hook em up with 115vac
[21:22:50] <zeeshan|2> instead of 230vac
[21:22:53] <zeeshan|2> and it'll draw same current
[21:22:55] <pcw_home> motors in series is never a good idea
[21:22:55] <renesis> why cant you put three
[21:22:57] <zeeshan|2> but having 3 is where it confuses
[21:23:02] <renesis> in parallel
[21:23:07] <renesis> why does it confuses
[21:23:10] <zeeshan|2> renesis: it'll draw too much current at 115VAC
[21:23:19] <renesis> what kind of fans are these?
[21:23:27] <zeeshan|2> https://www.flickr.com/photos/128539016@N05/15126376003/
[21:23:33] <zeeshan|2> pcw_home: why
[21:23:45] <CaptHindsight> how about 2 230VAC motors in series?
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[21:24:00] <zeeshan|2> CaptHindsight: id like to run them off 115VAC
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[21:24:04] <renesis> theyre 230v .1A
[21:24:11] <CaptHindsight> with a center tap to neutral
[21:24:12] <renesis> so at 120v theyre prob .05A
[21:24:13] <zeeshan|2> thats why i wanna put em in parallel
[21:24:23] <renesis> so three in parallel is 0.15A
[21:24:25] <CaptHindsight> and then make them 115VAC motors :)
[21:24:27] <renesis> whats the issue?
[21:25:26] <CaptHindsight> what size fuse to use for 100ma 115VAC impedance protected fans?
[21:25:45] <renesis> three in parallel?
[21:26:02] <renesis> i dunno, 500mA normal speed
[21:26:20] <zeeshan|2> .15A = burned motor coils? :p
[21:26:24] <zeeshan|2> thats over drawing em by 50ma
[21:26:26] <renesis> what?
[21:26:31] <zeeshan|2> driving
[21:26:36] <renesis> no each draws 50mA
[21:26:41] <renesis> wtf overdriving
[21:26:44] <zeeshan|2> oh duh
[21:26:52] <renesis> im an idiot?
[21:27:18] <renesis> good luck overdriving them at half rated voltage
[21:27:28] <renesis> more likely to stall them and burn them out
[21:27:31] <zeeshan|2> you know whats throwing me off?
[21:27:36] <zeeshan|2> im thinking of them as induction motors
[21:27:38] <renesis> take about 1 fan and 1 minute to test that
[21:27:49] <renesis> they might be who knows
[21:27:50] <zeeshan|2> a 230VAC induction motor cant be wired to 115VAC
[21:28:00] <zeeshan|2> cause it'll draw double the current
[21:28:01] <renesis> prob a rectifier and a regular hall sensor motor
[21:28:29] <zeeshan|2> why does it draw double the current in the induction motor case?
[21:28:49] <renesis> because itll go half the speed and the current draw depends on the magnets switching before the inductance lets much current pass through
[21:28:53] <renesis> these might do the same thing
[21:29:11] <zeeshan|2> easy way to test this would be hook ammeter
[21:29:15] <zeeshan|2> and check out how much its drawing?
[21:29:21] <renesis> no
[21:29:35] <renesis> you dont trust ameters with anything not a sine wave or DC
[21:29:46] <renesis> true RMS doesnt mean from DC to light
[21:29:50] <zeeshan|2> this isnt a sine wave?
[21:30:05] <renesis> anyone who thinks so is an idiot they usually roll off under 200hz
[21:30:34] <renesis> zeeshan|2: current wont be if it doesnt have perfect power factor correction
[21:30:44] <renesis> use a sense resistor and an oscope
[21:30:50] <zeeshan|2> i dont have a scope
[21:30:50] <zeeshan|2> :P
[21:30:54] <renesis> then integrate the area under the wave form
[21:31:00] <renesis> use simple shapes, gets close
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[21:31:14] <renesis> then just use a 1A fuse and get on with your life
[21:31:20] <renesis> if the fans burn. buy 120VAC ones
[21:31:35] <zeeshan|2> i have some 115vac ones
[21:31:42] <zeeshan|2> but theyre all different ratings
[21:31:46] <renesis> just take a fan and plug it into 120VAC and if after an hour its not fucked up hot, youre prob okay medium term
[21:31:48] <zeeshan|2> meaning faked up airflow
[21:32:00] <zeeshan|2> i hokoed it up for a few mins already
[21:32:01] <zeeshan|2> it wasnt f'ed
[21:32:03] <zeeshan|2> didnt get hot
[21:32:07] <renesis> you have your shit laid out so airflow is all turbulent anyway
[21:32:22] <renesis> few minutes isnt enough to saturate the magnets and housing
[21:32:26] <renesis> you need like an hour
[21:32:44] <renesis> then you need to smell for enamel wire, if you can smell burnt coil dont use those at 120vac
[21:32:57] <renesis> if you cant smell anything, its fine
[21:32:59] <zeeshan|2> or i can just hook em up to 230VAC :P
[21:33:33] <renesis> i dont like ac fans
[21:33:36] <renesis> they remind me of urmom
[21:34:05] <zeeshan|2> i justr checked with the ammeter
[21:34:10] <zeeshan|2> theyre drawing .1A at 115VAC
[21:34:35] <zeeshan|2> gonna check @ 230vac
[21:34:37] <renesis> because lower voltage but lower speed so its a wash
[21:34:46] <renesis> use a 500mA normal blow fuse
[21:34:54] <renesis> turn it on an off like a dozen times
[21:35:09] <renesis> if it blows, put a slow blo, move on with life
[21:36:35] <zeeshan|2> there goes the theory of 50mA at 115vac
[21:36:41] <zeeshan|2> at 230vac its also drawing .1A
[21:36:45] <zeeshan|2> so either my ammeter is inaccurate
[21:36:54] <zeeshan|2> or its being an induction motor
[21:36:57] <zeeshan|2> =p
[21:37:32] <zeeshan|2> gonna just hook em up to 230vac
[21:37:33] <zeeshan|2> and call it a day
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[21:38:48] <zeeshan|2> so since hteyre drawing .1A each, can't i just put them in parallel and put em on a .5A fuse
[21:38:52] <zeeshan|2> so if one of the fan shorts
[21:38:56] <zeeshan|2> it'll still pop the fuse
[21:39:06] <renesis> jezus fuck do you have nme on ignore again or what
[21:39:07] <zeeshan|2> cause its current draw will try to go to infinity?
[21:39:15] <CaptHindsight> heh
[21:39:36] <zeeshan|2> ren i'm not talking to you anymore
[21:39:42] <renesis> haha
[21:39:43] <zeeshan|2> your advice is meaningless
[21:39:47] <zeeshan|2> you make too many assumptions
[21:39:49] <CaptHindsight> renesis: it's Sunday, anything goes
[21:39:56] <zeeshan|2> just like you made the assumption of it drawing half the current
[21:39:58] <zeeshan|2> which it clearly isnt
[21:40:03] <renesis> and i told you why
[21:40:05] <zeeshan|2> this isn't a DC motor
[21:40:13] <renesis> its going slower, so the coils are drawing more, so its a wash
[21:40:28] <zeeshan|2> and i don't like your stabs
[21:40:29] <zeeshan|2> like
[21:40:33] <zeeshan|2> "i dont like ac like your mom"
[21:40:35] <zeeshan|2> you're on ignore now
[21:40:41] <renesis> <3
[21:40:47] <CaptHindsight> ok, going to go do something more fun like belt sand my nipples, bbl
[21:41:13] <renesis> do you do summersalts while doing it to get an even chamger on them?
[21:41:42] <zeeshan|2> http://i.imgur.com/PSaJyLu.gif
[21:41:43] <zeeshan|2> hahah
[21:41:49] <zeeshan|2> CaptHindsight: see that before you go
[21:41:53] <zeeshan|2> you'll like it :)
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[21:44:34] <renesis> 01:31:01 < renesis> these might do the same thing
[21:44:56] <renesis> see i qualified my assumptions
[21:45:33] <renesis> and what actually happen in real life is in between the two cases
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[21:51:35] <Deejay> gn8
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[23:20:37] <renesis> http://formulafreak.kinja.com/craig-scarborough-explains-the-mercedes-2014-power-unit-1656299441
[23:21:31] <renesis> they split the exhaust half and the compressor half of the turbo, front and back of engine
[23:21:51] <renesis> with the motor for spool up and energy recover in the middle, in the engine v
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