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[00:05:14] <Praesmeodymium> mozmck: as the owner of a shitty 40w co2 and having a decent concept on laser powers, it depends a lot on many factors. a 450nm (warm 445) you probably want more than 1.5 watts unless you dont mind spending all day while it keeps recutting lines. Thickness, and reflectivity of material makes a big differemce as does focal length and operating mode ie whether its continuos wave laser or pulsed
[00:08:07] <PetefromTn_> R2E4 Looks good man
[00:08:09] <mozmck> Praesmeodymium: interesting - I was thinking you would need a lot more than 1.5 watts - more like 30 or 40
[00:08:56] <Praesmeodymium> depends on material
[00:09:13] <mozmck> So what all can you cut with 40w? Also, I presume you can turn the power up and down? Or do you just pulse it?
[00:09:16] <Praesmeodymium> a 445nm also carriers a lot more energy with it than a 10.6cm
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[00:09:31] <Praesmeodymium> err 1064nm whatever
[00:09:41] <mozmck> I see. I know almost nothing about laser (so far).
[00:09:56] <Praesmeodymium> with the 40w its about 5mm of cutting wood or acrylic
[00:10:11] <Praesmeodymium> but that has a bit to do with the focal length of the lense
[00:10:35] <mozmck> Ah, ok. I think he may be looking at cutting up to about that thickness in wood.
[00:11:21] <Praesmeodymium> sinc the beam is X shaped the fovcal length determins min spot size (not as much as frequency does) and the depth that its in focus
[00:11:58] <Praesmeodymium> short focus crates a smaller spot but less cut depth
[00:12:09] <mozmck> interesting.
[00:12:24] <Praesmeodymium> 5mm of wood I wouldnt use a led laser engraver for tbh
[00:12:45] <Praesmeodymium> you will really want something with a proper air assist unless you like char
[00:12:46] <mozmck> what kind then?
[00:13:31] <mozmck> Is co2 led? I see - I bet air assist gets more expensive.
[00:13:47] <Praesmeodymium> well... prolly a co2 they can achieve decent powers for decent prices,
[00:13:58] <Praesmeodymium> no co2 is a neoen tube with mirrors
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[00:14:54] <Praesmeodymium> the do have some high power IR diodes but they make a squareish beam
[00:16:05] <Praesmeodymium> lasers are limited and not terribly cheap, as far as cutting goes they have rather limited uses until they get real powerful. lower power is best for wood acrylic and if you hate your laser vynil signage
[00:16:37] <Praesmeodymium> like I totally wish I had spent the money on a small mill rather than a co2 laser
[00:17:14] <PetefromTn_> http://imgur.com/a/zwTv1 :D
[00:20:22] <_methods> that for your tool changer PetefromTn_
[00:21:03] <PetefromTn_> huh?
[00:21:12] <_methods> that servo
[00:21:13] <PetefromTn_> no thats for my CNC lathe
[00:21:17] <_methods> ahhh
[00:21:18] <_methods> kk
[00:21:21] <_methods> right on
[00:21:24] <PetefromTn_> two motors and drives and cables
[00:21:30] <PetefromTn_> brand new ready to go
[00:22:34] <Tom_itx> you say you're gonna send those to me?
[00:23:05] <PetefromTn_> why hell no
[00:23:14] <PetefromTn_> why on earth would I do that? ;)
[00:23:16] <Tom_itx> and i thought we were buds
[00:23:26] <PetefromTn_> I know I'm such a shit hehe
[00:23:40] <_methods> whatever it takes to exit the ranks of the latheless
[00:23:41] <_methods> lol
[00:23:52] <PetefromTn_> man lemme tell ya
[00:23:59] <PetefromTn_> it SUCKS being latheless
[00:24:24] <PetefromTn_> I can't wait to go from NO lathe to badass CNC lathe and make some cool parts
[00:24:39] <PetefromTn_> but right now I gotta head into town to pickup my chinese food ;)
[00:24:45] <PetefromTn_> one step at a time guys!!
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[00:31:40] <ssi> lol
[00:32:42] * Tom_itx hugs his manual lathe
[00:33:08] <R2E4> Would I get a following error if my encoders are not getting to the 7i77?
[00:33:42] <R2E4> Tom, make sure the power is off....lol
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[00:56:10] <PetefromTn_> sure
[00:56:30] <PetefromTn_> set your max error large to tst
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[01:21:59] <PetefromTn_> OKAY Riddle me this.... I am First In earth, Second in Heaven, I appear two times in a week. You can only see me once in a Year although I am in the middle of the sea, What am I?
[01:24:23] <SpeedEvil> https://www.youtube.com/watch?v=7b2T8K2D-ps
[01:24:57] <Tom_itx> E
[01:25:19] <PetefromTn_> YUP!!
[01:25:29] <PetefromTn_> It took me a couple minutes to get it
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[01:26:25] <_methods> tricky hobbitses
[01:26:36] <SpeedEvil> http://i.imgur.com/woR93kY.jpg bricklayers hate him for this one simple trick
[01:26:53] <PetefromTn_> tricksy
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[01:28:11] <PetefromTn_> that's one crazy arch
[01:28:45] <SpeedEvil> Structurally useless I think
[01:29:04] <Tom_itx> http://tom-itx.no-ip.biz:81/~webpage/women_vs_men/whymendie_index.php
[01:30:47] <R2E4> These Chineese drives dont like it here in north america.... lol
[01:31:23] <PetefromTn_> you mean WAY North America!!
[01:31:38] <R2E4> yeah...
[01:31:56] <PetefromTn_> what model drives are you using?
[01:32:28] <R2E4> linux side is ok, sending the drive enable and I tried putting a 9 volt battery on the drive to move the motor and notta......
[01:35:25] <R2E4> KRS 110st_m06030 chineese
[01:37:08] <Contract_Pilot> Evening
[01:38:00] <R2E4> The driver is in location mode, need speedétorque mode me thinks
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[02:17:17] <R2E4> no candy yet
[02:17:46] <PetefromTn_> I got tons of candy here :D
[02:18:01] <R2E4> Can jog the motor from controls on the drive, but cannot get it to move from 7i77
[02:18:10] <R2E4> or 10v input
[02:21:39] <PetefromTn_> is the drive enabled?
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[02:25:08] <R2E4> yeah, the drive is enabled
[02:28:30] <R2E4> where do I set in linuxCNC sppeed mode or torque mode. INI?
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[02:36:07] <PetefromTn_> just out of curiosity what pc components did you choose for this build?
[02:36:39] <R2E4> atom motherboard
[02:36:51] <R2E4> 5i25 with 7i77
[02:37:35] <PetefromTn_> okay WHICH atom MB and what sort of drive did you use? What ram? and what power supply? I am trying to select these items myself currently
[02:37:42] <Tom_itx> d525?
[02:37:46] <Tom_itx> d510?
[02:37:58] <R2E4> ah hang on I see
[02:38:06] <Tom_itx> the Q1900 Q1800 are newer pete
[02:38:20] <PetefromTn_> I understand that thank you
[02:38:20] <Tom_itx> i've also got a D525
[02:39:08] <PetefromTn_> I would prefer to get past the occasional real time delay error I get with the atom I have here in my selection of the new motherboard
[02:39:52] <Tom_itx> this was an intel atom mb
[02:40:09] <PetefromTn_> yeah so is mine as I recall
[02:40:15] <R2E4> hahaha, I am getting the same error
[02:40:24] <R2E4> everytime I start linuxcnc
[02:40:37] <PetefromTn_> yeah apparently it is a factor of the main boards D525
[02:40:50] <R2E4> haha, great
[02:40:53] <PetefromTn_> it has never really caused any issues other than the annoyance of getting the error
[02:41:04] <Tom_itx> i haven't noticed it
[02:41:26] <R2E4> No biggie, mobo are cheap anyway, I am trying to get this drive to move with 10v, doesnt want to cooperate
[02:42:37] <R2E4> I should be able to put a 9v battery on the 0-10v input on the drive and iot move right?
[02:42:52] <PetefromTn_> I would think so
[02:43:11] <PetefromTn_> hot and ground
[02:43:32] <R2E4> yeah, it aint doing squatt
[02:46:02] <PetefromTn_> are you running a 24 volt system?
[02:46:15] <PetefromTn_> do you have field IO on the 7i77 setup?
[02:46:50] <R2E4> yeah, inputs and outputs are working
[02:47:06] <R2E4> 24v field power
[02:47:56] <PetefromTn_> if you can jog the drive AT the drive and get movement but not with the inputs maybe your inputs are wired wrong?
[02:48:50] <R2E4> I can jog the drive with the control panel of the drive. I tried enabling the drive, and putting a battery on the 0-10v control port of the drive
[02:49:31] <PetefromTn_> You would also need to check your drive's settings to ensure it is waiting for analog control input
[02:49:55] <R2E4> yeah I set that
[02:51:15] <R2E4> There is one page on these drives on the net...lol
[02:51:28] <R2E4> The guy is trying to use the rs4985 port
[02:51:32] <R2E4> 485
[02:51:59] <PetefromTn_> modbus control
[02:52:55] <PetefromTn_> It sounds like you have the power setup right. when you jog it can you watch the encoder counts moving? Is the DRIVE in velocity mode? sounds like a setting is wrong to me
[02:53:53] <R2E4> yes it is is speed mode. Thats the other thing, I dont see the encoders counting, thats not set right either.
[02:54:18] <PetefromTn_> on the drive or in linuxCNC?
[02:55:01] <R2E4> I am checking in Linuxcnc, dont see the inputs so something wrong on the encoder side also
[02:55:51] <R2E4> But that may be because when in test mode on the drive, it wont send out encoder sigs
[02:56:17] <PetefromTn_> does the drive come with test/tune software and cables?
[02:56:48] <PetefromTn_> perhaps you can see that working there?
[02:57:22] <R2E4> no software
[02:57:32] <PetefromTn_> I apologize if I am giving you mamby pamby obvious advice here I am not an expert but I usually just check the simple stuff first
[02:58:42] <R2E4> I think it is the settings on the drive also. The manual is half chineese and half english, and the english that it speaks is not from this land....
[02:58:48] <PetefromTn_> I assume you have the encoder outputs wires into the 7i77 already and the enable and whatnot as well
[02:59:52] <R2E4> yeah the encoders sent to 7i77, yeah enable goes to drives, I can hear it enable when I turn on LCNC
[03:00:15] <PetefromTn_> oh you can?
[03:00:31] <PetefromTn_> thats good
[03:02:44] <PetefromTn_> what kind of 24v power supply did you use? I am ALSO looking for one of those hehe
[03:04:17] <R2E4> A nice DIN mount
[03:04:31] <PetefromTn_> oh yeah? got a link?
[03:04:56] <R2E4> Rhino from Automation direct, 5vdc PS also
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[03:05:49] <PetefromTn_> http://www.automationdirect.com/adc/Shopping/Catalog/Power_Products_(Electrical)/DC_Power_Supplies/24VDC,_DIN_Rail_Mount/PSB24-120
[03:05:53] <R2E4> PSB24-120
[03:06:21] <R2E4> yeppers thats the one, and the 5v one also
[03:06:42] <PetefromTn_> what are you using the 5v for?
[03:07:34] <R2E4> 7i77 5volt input. I dont like using PC 5 volts
[03:07:47] <PetefromTn_> nice
[03:07:53] <PetefromTn_> this is good setup man
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[03:09:38] <PetefromTn_> they have a 240 watt model too
[03:09:49] <PetefromTn_> 10a
[03:14:51] <PetefromTn_> well Gn8
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[04:03:59] <R2E4> got the motor to turn but encoders not working. arrgghh
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[04:04:39] <R2E4> Anyone around that knows encoders and the 7i77?
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[07:49:11] <Deejay> moin
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[08:24:22] <t4nk988> help
[08:25:06] <tiwake> https://www.youtube.com/watch?v=zLvYUkagKPg
[08:27:44] <t4nk988> impressive
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[12:48:39] <Jymmm> PCW: pcw_home
https://www.youtube.com/watch?v=KC6WDxPSrZ8
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[12:51:42] <redlegion> Have you guys heard that there's a shortage of CMM programmers?
[12:52:08] <redlegion> I've had multiple people tell me that and I can't imagine why there would be a shortage.
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[13:07:25] <Tecan> nice trimslice
[13:07:55] <Tecan> how are they going to get 4k display without cooling though
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[13:28:25] <_methods> because programming cmm's is boring
[13:28:39] <_methods> and everyone hates the quality guy?
[13:39:44] <Loetmichel> everyone always hates the QM guy ;-)
[13:51:34] <_methods> i know hehe
[14:08:04] <redlegion> This is true.
[14:08:28] <redlegion> "How can the true position be 8mm out!? Measure it again!"
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[16:03:04] <DaPeace> hey guys, short question. i want to connect 2 buttons and want to use the signal halui.programm-is-running to check for the state.. linuxcnc complains that the signal is already in use.. any hint how to solve that?
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[16:10:17] <r2e4> Mornin all
[16:12:01] <r2e4> i can see encoders counting in hal, does that mean they are connected properly?
[16:12:40] <SpeedEvil> Are they all counting the right way, on the right axes, at the right rates?
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[16:31:59] <CaptHindsight> I have a question but I'll be logging out of the channel 2 minutes after I post it...
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[16:33:16] <CaptHindsight> do some ISP's charge by the minute to connect to IRC or something?
[16:33:58] <SpeedEvil> Some iphone apps do that
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[17:15:16] <ssi> CaptHindsight: did you get an unexpected bill?
[17:16:36] <CaptHindsight> ssi: just wondering why someone would ask a question here and log out 2 minutes later
[17:17:30] <CaptHindsight> besides ADD, too much amphetamine, under the age of 12, etc etc
[17:18:16] <ssi> lul
[17:18:34] <ssi> I guess not everyone leaves irc running in a screen session on a private server
[17:19:09] <ssi> speaking of which
[17:19:15] * ssi wanders off to find more amphetamine
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[17:51:59] <Tom_itx> DaPeace, find the net name it's attached to
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[18:03:14] <CaptHindsight> DaPeace: post your HAL config so people can see what you are trying to do
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[18:15:56] <JT-Shop> DaPeace, use the signal not the pin
[18:17:37] <Deejay> Luke, use the force!
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[18:32:27] <CaptHindsight> anyone have a small plastic injection molding machine they want to get rid of?
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[18:32:45] <_methods> do they make small injection molders lol
[18:33:06] <CaptHindsight> heh, yeah for protos
[18:33:07] <_methods> i remember seein some guy was doing one diy
[18:33:10] <CaptHindsight> desktop
[18:33:18] <Jymmm> CaptHindsight: Yes I do (looks at glue gun)
[18:33:29] <ssi> _methods: there's a guy that made a cool little desktop injection molder that takes it to maker faire
[18:33:59] <CaptHindsight> hmm hot melt + artisnal wooden molds...... smells like a poopstarter
[18:34:16] <_methods> ssi: yeah i think that's the one i'm thinkin of
[18:34:20] <_methods> this one is kinda cool though
[18:34:23] <_methods> http://www.scorchworks.com/Injection_molding/injection_molding.html
[18:34:28] <CaptHindsight> https://www.kickstarter.com/projects/210417487/bench-model-plastic-injection-machine
[18:34:29] <_methods> arbor press injection molder
[18:35:01] <archivist> CaptHindsight, I see them sometimes on fleabay
[18:35:15] <CaptHindsight> more like
http://www.morganindustriesinc.com/
[18:36:14] <CaptHindsight> I think the Morgan new costs more than a nice medium size used machine
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[18:37:25] <CaptHindsight> someone offered me a 500 ton for a few $K
[18:37:55] <archivist> http://www.ebay.co.uk/itm/Injection-Moulding-machines-Austin-Allen-x2-230-240-v-/281847431614
[18:38:25] <_methods> https://www.youtube.com/watch?v=2P7MaZUrSQQ
[18:38:27] <_methods> that one
[18:38:59] <CaptHindsight> I know where to find em. I'm just checking if any of you guys have one
[18:39:08] <CaptHindsight> or gals
[18:39:21] <_methods> nope
[18:41:14] <archivist> faster to machine some plastic :)
[18:42:41] <CaptHindsight> http://www.ebay.com/itm/VAN-DORN-275-TON-INJECTION-MOLDING-MACHINE-/151873866592 $3200 if thats the reserve price for a 275 ton
[18:44:17] <CaptHindsight> this is for another project where they have money but no time
[18:45:26] <_methods> that's way better than the projects i usually get where they have no money AND no time lol
[18:45:33] <CaptHindsight> lol
[18:46:00] <Tom_itx> CaptHindsight, make one:
http://www.users.qwest.net/~kmaxon/page/side/mold_mach_137.htm
[18:46:26] <CaptHindsight> by next week?
[18:46:46] <Tom_itx> hire a large workforce for a week
[18:47:05] <CaptHindsight> I'd have to rent port-a-potties
[18:47:16] <Tom_itx> oh, well forget it then..
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[18:47:58] <_methods> wow that site...........
[18:48:16] <Tom_itx> yeah he's got / done alot of stuff
[18:48:27] <_methods> except clean up his website lol
[18:48:38] <Tom_itx> true
[18:48:53] <CaptHindsight> my eyes hurt but it's a nice change, sort of retro
[18:49:02] <_methods> sort of lol
[18:49:14] <_methods> straight out of the 90's
[18:49:40] <Tom_itx> could be when it was last updated :)
[18:50:33] <CaptHindsight> http://www.ebay.com/itm/Sumitomo-SH-75-Injection-Molding-Machine-C-250-Great-Price-/151828040646 $1950 or best
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[18:56:12] <CaptHindsight> what is this?
http://www.rakuten.com/prod/dragonfly-style-injection-molding-rotary-shader-tattoo-machine-red/285094145.html?listingId=436360656&sclid=pla_google_DealsDirect2U&adid=29963&rmatt=tsid:1012713|cid:223285369|agid:13828121329|tid:kwd-86359400689|crid:60879536569|nw:g|rnd:11570748586245319555|dvc:c|adp:1o5&gclid=CJPKivC498gCFYkXHwodEOIHtA
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[19:00:51] <archivist> something suitable for use on your enemies
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[19:02:13] <SpeedEvil> CaptHindsight: the sticky out bars I think run a motor to an eccentric crank
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[19:14:03] <_methods> lol
[19:14:09] <_methods> frequently sold with soldering iron
[19:15:49] <CaptHindsight> that's a crazy site
[19:16:04] <_methods> yeah what did they used to be called?
[19:16:08] <CaptHindsight> "Shopping is Entertainment!"
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[19:16:18] <_methods> i seem to remember it being something else before rakuten
[19:16:45] <_methods> ah buy.com lol
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[19:17:06] <_methods> http://www.inc.com/geoffrey-james/worlds-dumbest-rebrand.html
[19:18:02] <CaptHindsight> This rebrand is so crazy that I have to assume that somebody inside the company has gone insane.
[19:18:38] <ssi> shit can I buy buy.com from them? :P
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[19:19:59] <_methods> hehe
[19:20:03] <Jymmm> Can a clamp on amp meter be used on an extension cord?
[19:20:17] <CaptHindsight> if you split the cord
[19:20:27] <Jymmm> without splitting it
[19:20:33] <archivist> only of you can clamp only one conductor
[19:20:33] <ssi> yeah it'll work
[19:20:35] <_methods> Jymmm: i hope we're talking about an actual extension cord
[19:20:38] <ssi> it'll show you the sum of the currents in the cord
[19:20:44] <ssi> which will be zero unless there's crazyness involved
[19:20:46] <_methods> that Jymmm is always clampin stuff
[19:20:49] <Jymmm> ssi: sums?
[19:21:03] <ssi> yeah, positive current in the line, negative current in the neutral
[19:21:13] <archivist> +10 amps + -10 amps
[19:21:15] <ssi> should sum to zero
[19:21:30] <Jymmm> so it would cancel itself out?
[19:21:30] <ssi> if you can get the clamp on one conductor you'll get a valid current
[19:21:43] <ssi> hence the splitting
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[19:22:22] <Jymmm> Well, it's jsut not always practical to be ablee to do that is why I was asking.
[19:22:25] <ssi> make a 6" pigtail extension cord with some thhn and screw-on plugs, use that for your clampmeter measurement
[19:24:28] <Jymmm> ssi: I mostly wanted to see the loads on rolmex circuits
[19:24:30] <CaptHindsight> you can also guestimate, did the cord melt in under a minute? No then most likely <50A
[19:24:48] <Jymmm> CaptHindsight: But but the cord was 4/0
[19:25:19] <ssi> Jymmm: understand, but physics isn't gonna let you do it that way :)
[19:25:46] <CaptHindsight> 4 number 0 or 0000?
[19:26:01] <Jymmm> CaptHindsight: big ass service lines =)
[19:26:04] <ssi> 4/0 is zero 4awg conductors :D
[19:26:07] <Wolf_> 4/0 is 0.46”
[19:27:41] <Jymmm> http://www.andybaird.com/travels/skylarking/2008/photos/4-0-cable.jpg
[19:27:55] <Jymmm> quantity = 1
[19:28:46] <ssi> ugh
[19:28:54] <Wolf_> only good for about 3.2kA
[19:28:55] <ssi> my miserably pedantic EE friend has pointed out
[19:29:05] <Jymmm> I'm trying to find a way to measure service on a hourly (or better) basis.
[19:29:11] <ssi> that what you will see won't be the sums of the currents, but twice the common mode current into the device
[19:29:32] <ssi> which will be non-zero due to a non-zero coupling capacitance of the device to the earth
[19:29:35] <ssi> (thanks eric)
[19:30:05] <CaptHindsight> is it possible to completely thermally isolate the entire structure that the cables go into? :)
[19:30:09] <Jymmm> I can't find cheap hall effects that will fit 4/0 cable, else I guess I can try hacking the smart meter
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[19:33:16] <Jymmm> I need the 200A version of this
http://www.ebay.com/itm/SCT-013-030-0-30A-Non-invasive-AC-current-sensor-Split-Core-Current-Transformer/140970837771
[19:34:47] <Jymmm> YAY 000Amps
http://www.ebay.com/itm/Non-invasive-AC-current-sensor-SCT-019-200A-max-e-/251718202235
[19:37:02] <CaptHindsight> Jymmm: that's probably the lowest cost way to build it
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[19:39:42] <Jymmm> CaptHindsight: Yeah, I' just tring to figure out the various model #'s and if I can get both voltage and current draw at the same time (see chart
http://www.ebay.com/itm/Non-invasive-AC-current-sensor-SCT-019-200A-max-e-/251718202235)
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[19:40:29] <Jymmm> CaptHindsight: I saw something like this using two sensor that did a parasitic tab to power itself too, but I dont know the details of it
[19:40:59] <Jymmm> CaptHindsight: I already have the RF modules to play with
[19:42:09] <Jymmm> 19mm opening, I'll have to measure the 4/0 and it's insulator, but I don't think that's big enough =(
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[19:54:56] <Jymmm> ssi: I have a couple of kill-a-watt meters, but they are 110VAC only and limited to 15A
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[19:56:26] <Jymmm> I'm trying to determine the HVAC -vs- Wood Stove costs and when best to use one over the other.
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[19:57:15] <Jymmm> It's getting down in the 30'sF, so I can hear the heat pump going into defrost mode
[19:59:49] <SpeedEvil> http://www.ebay.co.uk/itm/Envi-Home-Cost-Energy-Saving-Electric-Smart-Meter-Monitor-Adapter-Transmiter-/281649252870?hash=item41939a8a06:g:1eYAAOSwrklVG8rT - for example
[20:00:03] <SpeedEvil> (does not measure volts)
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[20:01:43] <Jymmm> SpeedEvil: Other than the 100A limit, yeah something like that, but where I can collect the data over time and compare it to in/outdoor temps, etc
[20:02:10] <SpeedEvil> I have mine hooked to USB
[20:02:25] <Jymmm> oh, it has a usb port?
[20:03:12] <SpeedEvil> My closely related one does
[20:05:03] <Jymmm> http://www.ebay.co.uk/itm/Owl-CM160-USB-Wireless-Electricity-Electric-Energy-Monitor-Smart-Meter-/121087391648
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[20:21:33] <Jymmm> Lil pricy...
http://www.ebay.com/itm/Power-Tracker-Wireless-Energy-Monitor-Electrical-Data-Logger-Web-Portal-/252131893756
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[20:23:45] <Jymmm> "Joule Thief"
[20:26:39] <Praesmeodymium> theres a joule thief in every shitty disposable camer
[20:26:57] <Jymmm> Praesmeodymium: ?
[20:27:25] <Praesmeodymium> something I ran across ages ago.. dun remember what for but the flash circuit has a joule thief on it
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[20:27:40] <Jymmm> ah
[20:27:54] <Praesmeodymium> mighta been one of those days when I got trapped in youtube idiocy
[20:28:00] <Jymmm> hahaha
[20:28:06] <Praesmeodymium> look a stun gun from a camera or some such
[20:28:19] <Jymmm> I just saw one AU power meter that was self-powered (thief)
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[20:33:15] <ssi> joule thief if I remember correctly is just a little dc/dc converter that's designed to turn batteries into more of a constant power supply
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[20:35:53] <Jymmm> Yeah, so says wikipedia too
https://en.wikipedia.org/wiki/Joule_thief
[20:36:44] <PCW> marketing name for a boost converter
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[20:50:45] <Jymmm> Prebuilt and pricy
http://www.brultech.com
[20:50:59] <XXCoder> ssi: it also extracts more power from batteries
[20:51:15] <XXCoder> so you can power stuff off supposely dead battery as long as power requirement is low
[20:51:57] <XXCoder> for little while anyway
[20:53:08] <SpeedEvil> In general, you can extract a percent or so more energy.
[20:53:16] <SpeedEvil> Going from 0.8V-0
[20:54:03] <ssi> XXCoder: only for really naive battery powered devices
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[20:57:03] <XXCoder> I suppose
[20:57:11] <XXCoder> it can be useful though
[20:57:46] <XXCoder> Praesmeodymium: I dont think there is any shitty one use camera anymore
[20:58:48] <Praesmeodymium> XXCoder: they sell em in 10 packs
[20:58:54] <XXCoder> lol ok
[20:59:05] <SpeedEvil> http://hackaday.com/2015/06/06/crowdfunding-follies-debunking-the-batteriser/ - related
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[21:03:05] <XXCoder> oh look a sock account
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[21:06:46] <SpeedEvil> i diddn't read down the comments
[21:07:31] <XXCoder> sometimes great comments and sometimes lol
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[21:13:05] <andypugh> Batteriser looks like a reasonable idea over-sold
[21:13:20] <XXCoder> and badly designed
[21:14:01] <andypugh> I haven’t seen one, but a layer of mylar could solve that problem
[21:14:34] <XXCoder> just need wider gap, it only has tiny gap between + and -
[21:14:42] <XXCoder> so it can easily bridge gap
[21:14:45] <XXCoder> and its fire time
[21:14:58] <andypugh> It needs to be tight to fit in standard holders
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[21:22:06] <XXCoder> sure but why use metal strip?
[21:22:10] <XXCoder> use plastic or something
[21:22:33] <andypugh> It needs to conduct and be springy and thin.
[21:22:42] <XXCoder> but middle dont need to
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[21:23:02] <andypugh> No, and they show it in an Apple keyboard which is made of metal.
[21:24:39] <andypugh> (Actually, I just checked and it is lined with plastic)
[21:24:45] <XXCoder> yeah
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[21:28:41] <ssi> PCW: stupid question, in my process data RPC, for bidirectional pins, should it send back the value of the pin before the rpc runs, but leave the pin with the value that was provided over the wire?
[21:28:46] <ssi> seems like the right answer
[21:29:36] <andypugh> Most devices have a read cycle and a write cycle
[21:29:56] <andypugh> So you would send the current value in the read function and set the a
[21:30:01] <JT-Shop> one more hole left on the belt... time for a new one
[21:30:06] <andypugh> value in the write function
[21:30:25] <ssi> andypugh: from my (albeit limited) understanding of smartserial so far, read and write happens concurrently in the pd rpc
[21:30:35] <ssi> pdrpc sends the output bytes over the wire, and the remote returns the input bytes
[21:30:41] <andypugh> JT-Shop: Can’t you probe the hole positions and CNC mill some extra ones at the same spacing?
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[21:31:31] <andypugh> ssi: Ah. maybe, I only know anything at all about the link between FPGA and PC.
[21:31:44] <PCW> I depends on how you implement the RPC on the remote
[21:32:07] <JT-Shop> well I've been wearing it for 20-30 years so it is a good excuse for a new one
[21:32:33] <ssi> PCW: I think what I have written is probably a sane way to do it
[21:32:43] <ssi> time will tell :)
[21:32:56] <ssi> I don't know if we even will need bidirectional pins at all
[21:33:02] <ssi> but I'm implementing the framework for them
[21:33:10] <PCW> I think that's easier (hmm wonder what the 7I90 does)
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[21:36:31] <PCW> Looks like it dioe's the read first:
[21:36:32] <PCW> xferprocessdata
[21:36:34] <PCW> mode0_0xfer
[21:36:35] <PCW> mode0x0_read
[21:36:37] <PCW> ldib 00h
[21:36:38] <PCW> stab hm2addr0
[21:36:40] <PCW> ldib 10h
[21:36:42] <PCW> stab hm2addr1
[21:36:43] <PCW> stab hm2startread
[21:36:45] <PCW> nop
[21:36:46] <PCW> nop
[21:36:48] <PCW> ldab lbpremfault
[21:36:49] <PCW> stab @Y,0
[21:36:51] <PCW> ldab hm2data0
[21:36:52] <PCW> xorb minusoneloc
[21:36:54] <PCW> stab @Y,1
[21:36:56] <PCW> ldab hm2data1
[21:36:56] <XXCoder> PCW: whos!
[21:36:57] <PCW> xorb minusoneloc
[21:36:59] <PCW> stab @Y,2
[21:37:03] <XXCoder> next time use pastebin
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[21:42:41] <MacGalempsy> JT-Shop: too big or too small?
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[22:01:26] <WZL> hello all,
[22:01:26] <WZL> Can you help me to diagnose something? I got a servo runaway like condition using axis on lcnc 7.1 with a working config
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[22:02:49] <WZL> I wrote a loop with a condition : while 1=1 so never ends. Loading the file I noted that axis seem halted, I pres ESC and eventually axis unstuck
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[22:03:54] <WZL> I run the program and works as expected in a zig zag fashion . Then I pressed ESC and the program stops but the servo keep going for second and past the expected position for about a meter !!!! It seems that the servo was in control because it decelerated with the expected speed.
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[22:05:01] <Deejay> gn8
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[22:10:12] <TroyO> Hello, room. Just poking my head in, never knew this was here, LOL.
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[22:21:57] <andypugh> WZL: Travelling a meter too far on my machines would be expensive
[22:22:32] <andypugh> WZL: Axis preview hates infinite loops. You can use a comment (AXIS, STOP) to stop the preview.
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[22:22:49] <andypugh> WZL: But I see that isn’t your important problem.
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[22:23:45] <andypugh> Did the machine follow the programmed path for longer than expected, or wan’t it on the programmed path?
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[22:28:29] <WZL> no, the servo simply keep turning as in a continuos jog fashion.
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[22:30:02] <WZL> I think that is something related to the TP (in a infinite loop) and the axis jog command
[22:30:04] <Tom_itx> encoder working?
[22:30:21] <Tom_itx> must be if it followed a path
[22:30:50] <WZL> yes, the encoder shows the correct distance
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[22:31:19] <andypugh> A broken encoder caused this on a machine last week.
[22:31:36] <andypugh> No following-error trip?
[22:31:49] <andypugh> What is your following-error limit?
[22:32:18] <andypugh> Actually, rewind a bit, was the “correct distance” the commanded distance or the actual distance?
[22:32:53] <WZL> I´m sure that this is a software problem. I can manage to fail it several times
[22:33:24] <WZL> I will try to explain better, sorry about my english
[22:33:29] <andypugh> Well, yes, but, lots of other people use the exact same software, and this isn’t happening to everyone.
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[22:35:03] <WZL> ok, the first issue: the infinite loop halt axis on load. it this a right behaviour?
[22:37:29] <WZL> I just noted a new bugfix : ¨LinuxCNC 2.7.2 is out, with an important bugfix in canned cycle preliminary motion¨. this is something related?
[22:37:43] <andypugh> It is not uncommon. Basically Axis makes a trial run through the code to create the preview. You can break the infinite loop in the preview only by use of the “magic comment” that I posted earlier.
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[22:38:18] <andypugh> No, that bug-fix only affected the initial move in canned cylcles if your starting point was lower than the R-retract plane.
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[22:38:41] <WZL> ok then, second question. how the axis continuos jog works?
[22:40:07] <andypugh> A continuous jog starts as a programmed move to the axis limit. Then when you release the key it is aborted and becomes a controlled stop within machine accel limits. So, if you keep the key pressed the machine stops at the soft limit.
[22:40:22] <andypugh> And, also, if your key-release event is not seen by the system.
[22:40:27] <WZL> I not sure but ir seems related to a continuos jog in a ¨axis stuck ¨ moment
[22:40:35] <andypugh> But you said you were runnign G-code, and that’s very different
[22:40:50] <WZL> yes but is was after the ESC key
[22:40:59] <WZL> the g code works as expected
[22:41:26] <andypugh> Yes, it is possible that Axis might block the GUI so that GUI-commands were not seen. It is rather better to jog with realtime-linked inputs if possible, as they are always serviced.
[22:41:49] <WZL> and I set the axis limit about a km length for testing
[22:42:10] <andypugh> That’s probably not ideal…
[22:42:16] <WZL> ok, I understand
[22:42:41] <WZL> I just testing the electronics but I freak out about this
[22:43:18] <andypugh> If you can connect a jog-wheel to the motion.jog-XXXXX pins then nothing will interfere with them.
http://www.linuxcnc.org/docs/html/man/man9/motion.9.html
[22:43:26] <WZL> so if I limit the jog to discrete steps it will safe right?
[22:44:19] <WZL> I thought it worked out that way
[22:44:48] <andypugh> Keyboard jogging and halui jogging is user-space and there is no guarantee that the system will see the key release. (though, normally, this really isn’t a problem, we are typically talking about a few mS delay, not long enough to even notice)
[22:45:40] <WZL> exept when axis is trying to draw a endless loop :)
[22:45:47] <andypugh> After you pressed “ESC” Axis should not have been re-calculating the preview, so I don’t think this is your infinite loop.
[22:46:26] <WZL> so this is not the explanation?
[22:46:28] <andypugh> But, try the (AXIS, STOP) comment at the beginning of the loop.
[22:46:59] <WZL> ok, I will try it tonight
[22:47:36] <andypugh> A keypoard sends a key-press event and a key-release event. Sometimes a bad connection or other issue can mean that the key release event is not seen. I assume you are using a USB keyboard?
[22:48:50] <WZL> yes I do
[22:48:51] <andypugh> See section 11.7 to fix the AXIS preview loop:
http://www.linuxcnc.org/docs/html/gui/axis.html#axis:preview-control
[22:50:22] <andypugh> If possible, run a disk space check and memory check on your system. This is the sort of problem that in a different application that wasn’t running a machine would lead to a single key-press typing a whole line of a letter.
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[22:51:01] <andypugh> (You would be annoyed, but not in any physical danger, if it was Gedit not LinuxCNC)
[22:52:51] <WZL> if I understad right this problem is because a userspace program commanding a ¨to the axis limit¨ command in a loaded system. right?
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[22:54:51] <WZL> in this machine is configured the isolcpus option so I understand that there is only one core available for axis and all the system
[22:55:31] <PCW> IMHO KB jogging is not really safe for big machines (especially wireless or USB KBs)
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[22:55:43] <andypugh> No, isolcpus should put LinuxCNC onto the reserved core and everything else on the unreserved one.
[22:56:11] <andypugh> (The isolated CPU core is hidden from the system and does not show up under top)
[22:56:53] <WZL> ok, but I have two cores in total so axis and netflix (just joking) will share the only core left
[22:57:10] <PCW> and unless you really need it, dont use isolcpus as it will slow everything down
[22:57:32] <WZL> KB joggin in discrete steps is safe?
[22:57:43] <PCW> safer for sure
[22:58:39] <WZL> this a test pc only, and isolcpus was confugured as a curiosity
[22:58:52] <andypugh> WZL: Yes. If you want super-reliable jogging then you probably want jogwheels linked to motion.
[22:59:27] <rene-dev_> Im running a big machine without hardware controls, and I find it very challanging to find the axis window while a job is runnign and Im browsing the web :D
[22:59:47] <rene-dev_> altough I do have an esotp of course
[23:00:12] <andypugh> rene-dev_: I have _never_ had that problem, honest :-)
[23:00:30] <WZL> Yes I will limit to use harware jog because the machine is capable of 30 m/min in rapids
[23:00:45] <rene-dev_> PCW: you mean it slows down everything except realtime stuff?
[23:01:22] <andypugh> rene-dev_: Are you using the parport or some more fancy hardware?
[23:01:57] <andypugh> Finding enough parport pins for a jogwheel is probably difficult.
[23:01:59] <rene-dev_> no, 5i25 and 1kw dc servos, but that will be changed to ac servos with my driver soon
[23:02:17] <rene-dev_> actually parport as well, that runs the hydraulics
[23:02:24] <andypugh> Which daugher-boards on the 5i25?
[23:02:44] <rene-dev_> homemade
[23:03:23] <andypugh> Ah, OK. Some of the Mesa daughter-boards support MPG counters on GPIO pins.
[23:03:45] <rene-dev_> i have a usb mpg, but it is shit
[23:04:00] <rene-dev_> and the usb connectiobn dies when the spindle starts
[23:04:26] <ssi> rene-dev_: even with those fancy usb cables that crinq liques?
[23:04:29] <andypugh> And USB has all the problems that we have been discussing
[23:04:30] <ssi> er, likes lol
[23:04:47] <rene-dev_> I know, but someone gave it to me...
[23:04:56] <rene-dev_> now I know why
[23:05:25] <rene-dev_> ssi: it does not have microusb
[23:05:29] <andypugh> If the USB dies when the spindle starts, other things may well have problems too.
[23:05:31] <ssi> ah
[23:05:41] <WZL> a related question , all the ethernet developments run in userspace? are safe?
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[23:05:52] <andypugh> If the spindle in on a VFD then you might want a mains input filter for it.
[23:06:30] <andypugh> The uspace ethernet drivers still run in realtime, but they are user-space realtime not kernel module realtime.
[23:06:40] <WZL> ok
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[23:07:03] <rene-dev_> I have 3 spindles... 2 of them on a vfd
[23:07:21] <andypugh> (I am actually being a bit ambigious when talking abouit realtime and userpsace as the two parts of the system, it is really realtime and non-realtime)
[23:07:52] <rene-dev_> I had to disable the filter, it kills the rcd, which is unfortunateley out of my control
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[23:08:21] <andypugh> rene-dev_: You can get 3mA filters. Most are 30mA leakage and will trip an RCD.
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[23:08:41] <R2E4_> evening all
[23:08:51] <rene-dev_> I have one in the cabinet which does not kill it, but the one in the vfd trips it
[23:09:06] <rene-dev_> but the vfd is too large for the cabinet
[23:09:20] <rene-dev_> I have l larger one, but no time yet to change all teh wires
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[23:11:02] <andypugh> This one, for example, says that it is 7mA
http://www.ebay.co.uk/itm/Rasmi-single-Phase-RFI-Filter-/331680015566?hash=item4d39ab64ce:g:mWcAAOSw9N1VoqKk
[23:11:45] <rene-dev_> I think I have the exact same one, but 3 phase and 20A installed
[23:11:52] <andypugh> If you have a 30mA ot 10mA RCD then that one might be OK.
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[23:12:14] <andypugh> RCD and 3-phase is a bit of an unusual combination isn’t it?
[23:12:15] <Tom_itx> aren't those just chokes with some caps on em?
[23:12:25] <rene-dev_> no?
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[23:12:39] <andypugh> Tom_itx: Well, yes, but packaged to do a job.
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[23:13:02] <Tom_itx> i suppose prepackaged is good
[23:13:53] <andypugh> They have handy terminals and are set up with the right layout and component values to do the job. And they are pretty cheap.
[23:14:46] <WZL> rene-dev_: you can´t simply isolate the filter from ground to retain the in-line choke filter and avoid to disable the whole filter?
[23:15:20] <andypugh> The ones I have use GND as part of the filter network
[23:15:29] <andypugh> (Which is why they leak and trip RCDs)
[23:16:31] <rene-dev_> I dont know, what happens, there is a parameter in the vfd to disable the filter, and that helps
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[23:21:43] <andypugh> First pattern just about ready for the foundry:
https://picasaweb.google.com/lh/photo/mhMpBdyDtruxnFY9zyu149MTjNZETYmyPJy0liipFm0?feat=directlink
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[23:22:47] <JT-Shop> looking good andypugh
[23:23:01] <andypugh> Still need to finish the core boxes. And make 3 more core-boxes and 2 more patterns. And I am starting to get bored of it.
[23:23:02] <CaptHindsight> that's a good size hunk of metal
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[23:23:14] <Tom_itx> yeah, what's it supposed to be?
[23:23:26] <andypugh> It’s a lathe feeds gearbox
[23:23:54] <CaptHindsight> cast iron vs polymer granite
[23:23:55] <JT-Shop> is that special paint?
[23:23:58] <Tom_itx> i bet your local foundry loves you
[23:24:33] <andypugh> The foundry quoted £80 for that part. But he hasn’t seen it yet :-)
[23:24:35] <WZL> this is the feeds? it´s a BIG lathe
[23:24:41] <Tom_itx> hah
[23:25:08] <CaptHindsight> maybe add a 0
[23:25:26] <andypugh> WZL: Not super-big. The casting is the motor mount in this part-finished model:
https://picasaweb.google.com/lh/photo/t30w7IzwpLdSNfPFP6orwNMTjNZETYmyPJy0liipFm0?feat=directlink
[23:26:05] <CaptHindsight> for casting they are pretty reasonable around here, it's the patterns they like to stick it to you
[23:26:13] <andypugh> CaptHindsight: Nah. I am expecting that it might be £120 bit no more.
[23:26:36] <andypugh> I can see why, there is a lot more work in the patterns than the casting.
[23:27:16] <CaptHindsight> plus that is hollow
[23:27:51] <andypugh> Yes, 10mm wall thickness, so only about 20kg of metal.
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[23:28:26] <WZL> this is the inner core?
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[23:29:58] <andypugh> WZL: This is tge same pattern, unpainted, and the core-boxes:
https://picasaweb.google.com/lh/photo/T6Ks0gmDHhdQE3IiTMoFAdMTjNZETYmyPJy0liipFm0?feat=directlink
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[23:30:59] <andypugh> So, the core boxes ar clamped together to make a sand core, then that becomes the air-space in the final casting.
[23:31:06] <WZL> nice
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[23:32:25] <andypugh> But as my mill has a 1000rpm spindle each core box half was a full day of machining, and another day to make the blank, then the painting, sanding, painting some more. Thoroughly bored now.
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[23:33:10] <Tom_itx> did you do both halves in fusion?
[23:33:16] <andypugh> Yes
[23:33:22] <WZL> this is a job for a router. I only think about the dust
[23:33:24] <Tom_itx> as a single unit the split them?
[23:33:32] <Tom_itx> then*
[23:33:45] <andypugh> Well, I actually did it in Inventor, but the idea is the same
[23:34:00] <Tom_itx> yeah, just curious how you went about it
[23:34:15] <Tom_itx> draw the part as a solid then use the outside instead of the part as the part?
[23:34:25] <andypugh> Make the pattern from the model as a derived part with a 1.01 scale for shrinkage
[23:34:43] <Tom_itx> is that a standard shrinkage value?
[23:34:58] <andypugh> Yes
[23:36:20] <andypugh> Then create another new part for the core box, and derive the pattern into that as a solid. Then subtract the main pattern from another extrusion with a boolean subtract to get the core shape as single lump
[23:36:24] <Tom_itx> https://plus.google.com/photos/108164504656404380542/albums/6154759290444673793/6209656347812210930?pid=6209656347812210930&oid=108164504656404380542
[23:36:31] <Tom_itx> so that is foam? looks like wood
[23:36:49] <CaptHindsight> anyone have personal experience with an Everlast TIG?
[23:36:58] <CaptHindsight> http://www.everlastgenerators.com/product/tig-stick/powertig-250ex
[23:37:00] <Jymmm> home depot tig?
[23:37:05] <andypugh> It is wood. Well, a stack of MDF glued together
[23:37:32] <Jymmm> cant see it
[23:37:40] <CaptHindsight> Jymmm: no, a real TIG, just not a red or blue
[23:37:43] <andypugh> Foam would be better, it needs a lot less sanding and painting, but a lump that size would be >£100
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[23:38:29] <Tom_itx> did you machine relief in the walls for mold release?
[23:38:34] <Tom_itx> draft angle
[23:38:41] <Tom_itx> looks like it
[23:38:45] <andypugh> Yes. Inventor has tools to add draft to faces.
[23:40:13] <andypugh> These patterns are model-board (PU foam)
https://picasaweb.google.com/lh/photo/SPQQ70I_GFJ98Zec9LHmhtMTjNZETYmyPJy0liipFm0?feat=directlink
[23:40:49] <WZL> good night guys, I will go home. Thanks for your help.
[23:40:52] <andypugh> Much cleaner and nicer to work with, but the lumps I found in the skip at work were not big enough for the big patterns. :-)
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[23:46:06] <Sync> CaptHindsight: it is overpriced, but in general, I have nothing bad to say about them
[23:48:30] <Tom_itx> andypugh are you running 2.7 on your mill?
[23:48:47] <andypugh> I don’t think I am
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[23:52:18] <PetefromTn_> Hey folks
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[23:52:33] <PetefromTn_> hows it going today in linuxCNC land
[23:53:04] <Tom_itx> fair to partly cloudy
[23:53:06] <PetefromTn_> I have been looking over the manuals for the DMM servo drives
[23:53:18] <PetefromTn_> it was beautiful here today actually
[23:53:30] <PetefromTn_> anyway
[23:53:36] <PetefromTn_> there is a lot of good news
[23:53:55] <Tom_itx> you decided to send em to me?
[23:53:59] <PetefromTn_> first the motors seem to be a bolt in replacement for my old motors IE to the mounts etc.
[23:54:04] <PetefromTn_> no heh
[23:54:11] <Tom_itx> well damn
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[23:54:47] <PetefromTn_> unforunately the drive pullies are the wrong size but they are the type of pulley that you can replace the middle insert in so I will just have to order the inserts in the correct size
[23:55:02] <PetefromTn_> or just order the correct size pullies
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[23:55:33] <PetefromTn_> the other great news is that the drives manual seems to say that the main IO connector that will be wired into the 7i77 card
[23:55:41] <PetefromTn_> uses a Dsub 25 pin connector
[23:55:48] <PetefromTn_> so unlike the TECO's
[23:56:10] <PetefromTn_> which used some unusual sized japan spec connector that I had to individually solder
[23:56:25] <PetefromTn_> each wire to and build that connector cable
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[23:56:47] <PetefromTn_> I SHOULD just be able to grab any old DB25 cable and cut one end off
[23:56:56] <PetefromTn_> and wire appropriately
[23:57:08] <PetefromTn_> which will save me a boatload of work
[23:57:35] <PetefromTn_> The motors look very nice as do the DYN4 drives
[23:57:54] <PetefromTn_> the premade cables look just like the ones I got with the TECO's
[23:58:14] <PetefromTn_> with the exception that the TECO motors being much larger and higher power used barrel connector plugs
[23:58:39] <Sync> hmm the dyn4 look like old yaskawas
[23:58:45] <PetefromTn_> whereas these motors are only 750 watt Nema 34s and don't have those types of connectors
[23:58:46] <jthornton> not all DB25 cables are made the same... some leave wires out
[23:58:56] <PetefromTn_> jthornton yup
[23:59:10] <PetefromTn_> I will make sure I use the right one ;)
[23:59:38] <PetefromTn_> my friend Art and I were looking over the system and discussing options
[23:59:46] * jthornton is making Korean Shrimp Pancakes tonight yum
