#linuxcnc Logs
Feb 18 2025
#linuxcnc Calendar
12:26 AM lcnc-relay: <captainhindsight_.@> what crashes, you didn't see any crashes
12:40 AM lcnc-relay: <captainhindsight_.@> just because a plane land upside down or splits up and turns into a fireball?
12:59 AM Deejay: moin
01:01 AM bjorkintosh: moin moin
01:56 AM rifraf: well a real life rendering of a cad model https://www.desire3d.com/images/public/5C_ColletRelease1.jpg
02:01 AM rifraf: i guess now thats its real i can ask if linux cnc supports addons like this?, where i need a few air cylinders moving with interlocks to make sure it does not try why spindle active, the spindle is also an AC servo that need to be run with step/dir commends but also as a spindle with 0-10V speed control
02:01 AM jpa-: yes, that should be quite easy to implement using HAL components
02:01 AM rifraf: and if we can unlock the spindle then can we go a bit further and control another grippper or 2 to do bar feeding or pulling
02:02 AM rifraf: jpa- cool, most stuff is mach 3 doable that i need
02:02 AM jpa-: at some point it may make sense to create a custom HAL component so that you can code logic in C instead of by combining the HAL logic components
02:02 AM rifraf: and currently doing it with custom gcodes and a standalone controller
02:03 AM rifraf: so HAL is like another layer or plugin that gets called from linuxcnc?
02:04 AM rifraf: might try setup a pc shortly and do an install of lcnc again
02:06 AM rifraf: but will start testing with an arduino to control the pnuematic valves and ports and get the motion working reliably
02:15 AM lcnc-relay: <captainhindsight_.@> some areas of the rendering look carved vs machined
02:22 AM rifraf: all parts have been manually made, maybe thats why they look carved? carved with angle grinder and cutting discs and flap discs
02:23 AM rifraf: i did cnc the keyways, but not on the parts in that picture, they are the non rotary parts i guess
02:23 AM rifraf: drill tapped and counter bored more holes than i can count today
02:24 AM rifraf: and the electomagnetic vice is proving to be a most useful tool
05:26 AM jpa-: rifraf: HAL is the linuxcnc realtime part, which connects the outputs from G-code interpreter (i.e. axis positions etc.) to hardware pins; and it can have extra logic for interlocks and e.g. toolchangers
05:27 AM jpa-: rifraf: for non-realtime needs you can also connect python to HAL, for easy interfacing with custom stuff; but it will have slightly more latency, usually about 10 ms
08:26 AM Guest62: freecad
08:28 AM Tom_L: solidworks
08:28 AM Tom_L: https://forum.linuxcnc.org/9-installing-linuxcnc/53163-new-and-working-rtai-debs-for-2-9?start=60
08:37 AM -!- #linuxcnc mode set to +v by ChanServ
08:59 AM lcnc-relay: <skunkworks8841@> -15f
09:53 AM lcnc-relay: <voiditswarranty@> -23f
09:54 AM lcnc-relay: <voiditswarranty@> getting tired of the cold 🙂
11:53 AM lcnc-relay: <unterhausen@> We were complaining about it being 12F. Going to get down to 5F tonight though
11:56 AM Tom_L: -5
11:57 AM xxcoder: I think this area is dumping coldness all over you guys. 50s f all week
12:51 PM Tom_L: anyone else running 2.9.4?
12:52 PM Tom_L: i'm finding some odd behavior running subroutines
12:52 PM Tom_L: they worked fine in 2.9.3
12:52 PM Tom_L: i ran the commands mdi a line at a time and that worked fine
12:53 PM Tom_L: in the sub they seem to just hang but i can't tell exactly where
12:54 PM Tom_L: i just commented out the subroutine calls and ran it as a regular file and it runs fine
01:12 PM lcnc-relay: <voiditswarranty@> woo 30f over the weekend, tshirt weather!
01:18 PM bjorkintosh: positively balmy!
01:23 PM lcnc-relay: <voiditswarranty@> I better get the clutch back in the motorcycle
02:33 PM lcnc-relay: <skunkworks8841@> wow - some times I woner
02:33 PM lcnc-relay: <skunkworks8841@> wonder
02:33 PM lcnc-relay: <skunkworks8841@> I am trying to get the thcad to count with the second encoder input on the 7i97t
02:34 PM lcnc-relay: <skunkworks8841@> I have it set to counter mode. the FO+/- is hooked to a and not a
02:34 PM lcnc-relay: <skunkworks8841@> I get nothing. The led flashing changes when I turn the pot - but I get no counting or velocity about it.
02:35 PM lcnc-relay: <skunkworks8841@> out of it
02:35 PM lcnc-relay: <skunkworks8841@> the encoder is set to differential input
02:35 PM lcnc-relay: <skunkworks8841@> (but I tried single ended and the same)
02:38 PM lcnc-relay: <captainhindsight_.@> LCNC needs RT_Python, who wants to invent it?
02:39 PM lcnc-relay: <skunkworks8841@> with a scope - the output seems like it is differential and changes frequency when turning the pot.
02:42 PM lcnc-relay: <skunkworks8841@> lol- I just changed it to 1/32 and it worked
02:45 PM Tom_L: capn, tell memleak the new rtai boots the gui alot faster than 5.4.279
02:45 PM lcnc-relay: <captainhindsight_.@> o'tay
02:48 PM lcnc-relay: <captainhindsight_.@> memleak Tom_L says "the new rtai boots the gui alot faster than 5.4.279" 🙂
02:49 PM roycroft: i think rt_python is going to need some kind of time-accelerator if it is really to function in rt mode
02:49 PM Tom_L: he's not here currently or i'd have done the same
02:49 PM roycroft: kind of like in star trek where kirk speeds up in time so that he sounds like a fly buzzing around to the rest of the crew
02:49 PM roycroft: python will have to run like a fly
02:50 PM lcnc-relay: <captainhindsight_.@> https://www.codeconvert.ai/python-to-c-converter
02:50 PM roycroft: but at least we're not discussing rt_perl
02:50 PM lcnc-relay: <skunkworks8841@> rt cobal
02:50 PM lcnc-relay: <skunkworks8841@> actually - it probably was... lol
02:51 PM lcnc-relay: <captainhindsight_.@> faster punch cards
02:51 PM roycroft: well
02:51 PM roycroft: life was slower back then
02:51 PM roycroft: plenty of time to promenade then sip on a mint julep while waiting for the program to run
02:52 PM lcnc-relay: <captainhindsight_.@> ntulinux2467@ nutlinux@ ^^
02:52 PM lcnc-relay: <skunkworks8841@> https://photos.app.goo.gl/xVUDuvxzPNcdS39X8
02:52 PM lcnc-relay: <skunkworks8841@> lights!
02:53 PM roycroft: interestingly, i never used a card deck in my cobol days
02:53 PM roycroft: for ibm 360asm and fortran, yes
02:53 PM roycroft: but i learned cobol on a data general mini-computer that had a glass teletype!
02:53 PM roycroft: it was revolutionary that input device
02:54 PM lcnc-relay: <captainhindsight_.@> skunkworks: doing similar today
02:54 PM lcnc-relay: <skunkworks8841@> I bet yours isn't as messy
02:54 PM lcnc-relay: <skunkworks8841@> 😉
02:54 PM lcnc-relay: <skunkworks8841@> now I get to see if I can heft it into the box..
02:54 PM lcnc-relay: <captainhindsight_.@> actually even more messy
02:56 PM lcnc-relay: <skunkworks8841@> now it is mostly smop
02:56 PM lcnc-relay: <captainhindsight_.@> https://photos.app.goo.gl/t52SawxkFgZJynUf9
02:56 PM lcnc-relay: <skunkworks8841@> lathe even!
02:56 PM lcnc-relay: <captainhindsight_.@> just letting the wires hang
02:57 PM lcnc-relay: <skunkworks8841@> (this is for the spindle control on the monach - with a future cnc conversion)
02:57 PM lcnc-relay: <captainhindsight_.@> makerspace
02:57 PM lcnc-relay: <captainhindsight_.@> i forget the brand
02:58 PM lcnc-relay: <captainhindsight_.@> is a CNC lathe they got for $1K with blown DC servo drives
02:58 PM lcnc-relay: <skunkworks8841@> nice - brushed?
02:58 PM lcnc-relay: <captainhindsight_.@> or missing drives
02:59 PM lcnc-relay: <skunkworks8841@> https://photos.app.goo.gl/nGUJt4Xtr9ZrRr3Y9
03:01 PM lcnc-relay: <captainhindsight_.@> https://www.glentek.com/shop/motors/gmgmr/gm4050-38/
03:01 PM lcnc-relay: <captainhindsight_.@> brushed
03:04 PM lcnc-relay: <captainhindsight_.@> we picked up new closed loop steppers and drives for less than the cost of used dc servo drives
03:06 PM lcnc-relay: <captainhindsight_.@> https://www.omc-stepperonline.com/ts-series-12-0-nm-1699-68oz-in-1-axis-closed-loop-stepper-cnc-kit-nema-34-motor-driver-1-cl86t-s120-v41
03:07 PM lcnc-relay: <captainhindsight_.@> I think it has ~40in between centers
03:07 PM lcnc-relay: <captainhindsight_.@> and 12 in swing
03:08 PM lcnc-relay: <captainhindsight_.@> found a vector control card for the VFD
03:08 PM lcnc-relay: <skunkworks8841@> nice
03:08 PM lcnc-relay: <skunkworks8841@> that should be a pretty easy setup then
03:09 PM lcnc-relay: <captainhindsight_.@> yeah
03:09 PM lcnc-relay: <captainhindsight_.@> will get rid of the gearbox
03:09 PM lcnc-relay: <skunkworks8841@> lol - hal is pretty awesom.. Just scaled and offset the pot ouput so now it is 0 to 2500rpm
03:10 PM lcnc-relay: <captainhindsight_.@> yeah, easy peasy
03:10 PM lcnc-relay: <skunkworks8841@> this might actually work
03:13 PM lcnc-relay: <voiditswarranty@> roycroft: rt_basic 😄
03:13 PM lcnc-relay: <skunkworks8841@> I wrote a 3 axis machine control in ... I don't remember - turbobasic? no.. it was dos based and you could compile it.
03:14 PM lcnc-relay: <captainhindsight_.@> there has been Cython
03:14 PM lcnc-relay: <voiditswarranty@> turbopascal I think could compile into asm? I forget...
03:14 PM lcnc-relay: <skunkworks8841@> I got it to do G1,2,3 - but then tried to figure out how to do look ahead and then my head exploded. I gave up.
03:15 PM lcnc-relay: <captainhindsight_.@> FIFO
03:15 PM lcnc-relay: <skunkworks8841@> (step/dir out of the printer port)
03:15 PM Tom_L: sounds messy
03:15 PM Tom_L: got everything back up and working for 2.9.4 now
03:15 PM lcnc-relay: <skunkworks8841@> I think it was quick basic
03:15 PM lcnc-relay: <voiditswarranty@> heh I made a robot in highschool runing a tiny stepper directly off of the printer port, surprised I didn't fry it.
03:16 PM lcnc-relay: <voiditswarranty@> got like half an amp per pin, it was crazy
03:16 PM lcnc-relay: <skunkworks8841@> lol - I have been doing sketchy stuff for a long time - and suprisingly haven't blown a printer port
03:16 PM Tom_L: probably tougher parport chips back then too
03:16 PM lcnc-relay: <captainhindsight_.@> i use a LPT buffer card
03:16 PM lcnc-relay: <skunkworks8841@> I made my own..
03:17 PM lcnc-relay: <voiditswarranty@> I didn't know they existed then 😄
03:17 PM lcnc-relay: <skunkworks8841@> lol - I think I have one around here still
03:17 PM roycroft: back when i was in high school all robots could do were houscleaning and yelling "danger, will robinson!"
03:18 PM lcnc-relay: <skunkworks8841@> https://photos.app.goo.gl/derE4fyqfFFbQi9L7
03:19 PM lcnc-relay: <voiditswarranty@> then I dropped out of physics and made a pencil sharpener out of the $50,000 robot arm in the back of the electronics lab, got it up to 1 box of pencils sharpened to stubs in 30 seconds. 1/3rd hp motor driving a hand crank pencil sharpener
03:19 PM lcnc-relay: <skunkworks8841@> I think that emulated a paper tape..
03:19 PM lcnc-relay: <voiditswarranty@> that reminds me, I need to pick up more perf board
03:19 PM lcnc-relay: <skunkworks8841@> lol - just got some from amazon
03:20 PM lcnc-relay: <skunkworks8841@> it is harder to find DIP style boards anymore
03:20 PM lcnc-relay: <skunkworks8841@> (I am old)
03:21 PM lcnc-relay: <voiditswarranty@> https://www.amazon.ca/KeeYees-Adapter-SOT223-TQFP100-2-54mm/dp/B085L8SK7Z/
03:21 PM lcnc-relay: that has been amazingly helpful
03:21 PM lcnc-relay: <skunkworks8841@> but not as old as roycroft
03:21 PM lcnc-relay: <voiditswarranty@> common smd footprints to through hole
03:23 PM roycroft: i have rocks that call me 'grandpa'
03:42 PM C3-Shop: pet rocks?
05:05 PM lcnc-relay: <skunkworks8841@> wow - the 750w transformer gets suprisling hot just idling...
05:05 PM lcnc-relay: <skunkworks8841@> surprisingly..
05:05 PM lcnc-relay: <skunkworks8841@> like - almost burn you hands..
05:06 PM xxcoder: sounds ineffecient
05:06 PM lcnc-relay: <skunkworks8841@> yes
05:06 PM lcnc-relay: <skunkworks8841@> might want to look for a different one
05:06 PM lcnc-relay: <skunkworks8841@> (this one has been running in the monarch since we first got it running in the 8's
05:06 PM lcnc-relay: <skunkworks8841@> 90's
05:06 PM lcnc-relay: <skunkworks8841@> 80's
05:06 PM xxcoder: id do quick checkover but yeah thats odd
05:06 PM lcnc-relay: <skunkworks8841@> lol
05:07 PM xxcoder: lol
05:11 PM lcnc-relay: <skunkworks8841@> I could probably get by with a 500w transformer too.. (I am sure I have one around here)
05:11 PM lcnc-relay: <skunkworks8841@> 250 was a bit on the small side
05:43 PM memleak: JT-Shop, JT-Cave where do the flexgui examples go when linuxcnc is installed to the system, not rip?
05:43 PM memleak: /etc/linuxcnc just has the rtapi.conf file
05:43 PM Tom_L: flexgui/examples
05:44 PM memleak: right but where are the configs for linuxcnc?
05:44 PM Tom_L: in the example folders
05:44 PM Tom_L: mine are anyway
05:44 PM memleak: which is where on the root fs?
05:44 PM Tom_L: user/flexgui/examples
05:45 PM Tom_L: if you installed flexgui, look on the cnc menu to install examples
05:45 PM memleak: ok what i'm trying to do is drop the flexgui configs into the config directory for linuxcnc, but i haven't started linuxcnc yet so there isn't a configs folder in my home directory yet
05:46 PM memleak: on first launch i want to see the flexgui configs and have it ask me if i want a copy to my home directory
05:46 PM memleak: like where are the axis.ini files in the rootfs before they're copied to my home directory
05:46 PM Tom_L: i don't remember if it does or not
05:47 PM Tom_L: i've personally not used it since i've always had a git repo of them
05:47 PM Tom_L: you'd have to ask him
05:48 PM memleak: so i should start linuxcnc first, hit yes, then copy from /usr/lib/libflexgui/examples into my home directory?
05:48 PM Tom_L: yes
05:48 PM Tom_L: if i understand you right
05:48 PM memleak: it's just a bit redundant that way as opposed to run `cp` so the flexgui examples show up on the first run
05:49 PM memleak: i have to start an ini file i dont want, so i can copy the ones i do want, then restart linuxcnc
05:49 PM Tom_L: i don't think you do
05:49 PM Tom_L: life is full of redundancy
05:50 PM memleak: ok i found them: /usr/share/doc/linuxcnc/examples/sample-configs/
05:50 PM memleak: i ran find / -name "*axis*"
05:51 PM Tom_L: those aren't the flex examples though are they?
05:51 PM memleak: no but i can copy the flexgui configs into that folder so i only have to start linuxcnc once to start flexgui
05:55 PM memleak: brb need to logout
05:55 PM memleak: yep works
05:56 PM memleak: question.. should i just modify the gentoo package to install into the linuxcnc folder so people can just choose flexgui from linuxcnc without having to copy anything?
05:57 PM memleak: JT didn't do it that way but i can if it makes more sense to people.
05:59 PM Tom_L: that's up to you i suppose
05:59 PM Tom_L: did you see my note about gui lag on startup?
06:00 PM memleak: i did not.
06:00 PM Tom_L: there is none :)
06:00 PM memleak: i'll add a message in the package letting people know where the flexgui configs are so they're alerted at the end of the install
06:00 PM Tom_L: 5.4.279 lagged but this one doesn't
06:00 PM memleak: awesome!
06:01 PM Tom_L: so far seems like an all around better package
06:02 PM Tom_L: i posted the results on the forum
06:02 PM memleak: that's great!
06:09 PM memleak: i made the 5.4.290 kernel part of the 5.3.3 stable release: https://github.com/NTULINUX/RTAI/releases/tag/v5.3.3
06:33 PM Centurion_Dan1 is now known as Centurion_Dan
07:19 PM roycroft: i am finally doing a real job with my ir laser head - i'm making id tags for my cats, who still have the crappy aluminium ones from when i got them from the shelter, and have their old names written on them in sharpie
07:19 PM roycroft: i'm figuring that these tags are costing me about $175 each :)
07:19 PM roycroft: in fairness, they are solid brass, the new ones
07:20 PM roycroft: 30 minutes per tag for the engraving though - that is a long time
07:20 PM roycroft: for one word and a phone number
07:22 PM xxcoder: lol well its nice and personalized
07:23 PM roycroft: everything i make will bring the cost per item down, of course
07:24 PM roycroft: i'm hoping to get some paying jobs with it soon
07:24 PM xxcoder: yep
07:24 PM roycroft: i don't want to make my living with it, but i want it to pay for itself before too much longer
07:25 PM roycroft: i should go see if the first tag is done yet
07:26 PM roycroft: it is, and it turned out pretty nice
07:29 PM xxcoder: awesome
07:31 PM lcnc-relay: <ccatlett1984@> nice, i'm thinking of getting a small galvo laser this year
07:32 PM Centurion_Dan1 is now known as Centurion_Dan
07:33 PM memleak: Tom_L, is preempt_rt not suitable for you?
07:34 PM roycroft: i don't ever want to go into the laser engraving business, but it's a useful tool for my woodworking business, and also just to have around the house
07:34 PM roycroft: i want to make it pay for itself though
07:35 PM roycroft: i do some work with a non-profit that has branded thermal mugs on their merch website, and they are crap quality
07:35 PM roycroft: they don't sell a lot of them, so i'm going to ask them if they would let me be their provider for those
07:35 PM lcnc-relay: <ccatlett1984@> yep, i'd want a rotary for it, and waffling between a fiber or a UV
07:36 PM roycroft: i knwo i can make them a lot better
07:36 PM roycroft: i just got a rotary attachment for mine
07:36 PM roycroft: it's an led laser, but i got an ir laser head, so now i can engrave metals
07:37 PM roycroft: if i ever decide to make real money with a laser i'll buy or build a co2 laser
07:37 PM roycroft: but as of now that's not in the plans
07:37 PM xxcoder: honestly having options is good
07:37 PM xxcoder: if something is co2 immune you have blue or ir
07:37 PM roycroft: i've been told and have read that an ir laser is useless on wood
07:38 PM memleak: it doesn't make the wood catch on fire?
07:38 PM roycroft: but i decided when making these tags that i'd like to burn the outline of the tag onto a piece of wood as a registration thing
07:38 PM roycroft: it does not affect the wood at all
07:38 PM memleak: does it have to be wet?
07:38 PM roycroft: however, the wood is pine, and a little pitchy
07:38 PM roycroft: it burns the pitch nicely
07:39 PM roycroft: and there was enough pitch that i could use the outline attempt for registration
07:39 PM xxcoder: with my blue laser I had no issues wid wood, though mine was too weak t0o do real good engrave
07:39 PM roycroft: blue lasers are ideal for wood
07:39 PM memleak: the color of the laser matters?
07:39 PM xxcoder: very very much so
07:39 PM roycroft: absolutely
07:39 PM xxcoder: blue cant interact with clear
07:39 PM xxcoder: co2 one, cab
07:39 PM xxcoder: can
07:40 PM memleak: i thought the only thing that matters with a laser is size of the beam and temp
07:40 PM roycroft: 450nm just bounces of most metals - it can very faintly mark stainless steel, but can't really engrave it
07:40 PM roycroft: yes
07:40 PM roycroft: but temperature = color
07:40 PM memleak: oh!!!
07:41 PM roycroft: blue is ~450nm
07:41 PM roycroft: the ir laser head i'm using now is 1064nm
07:41 PM memleak: nanometers?
07:41 PM roycroft: yes
07:41 PM memleak: i'm confused, you wouldn't be able to see something as small as 450nm
07:41 PM xxcoder: can mark stainless by paint dark but very thin coating on uit
07:42 PM xxcoder: but yeah blue dont really work
07:42 PM memleak: the beam itself is 450nm in diameter?
07:42 PM xxcoder: no, light wave length
07:42 PM memleak: ah i know nothing about that
07:42 PM roycroft: right, it's the wavelength
07:43 PM roycroft: and keep in mind that wavelength is inversly proportional to frequency
07:43 PM lcnc-relay: <ccatlett1984@> memleak, thats the wave form
07:43 PM roycroft: so 1064nm is a long (relatively) wavelength, but a low frequency
07:43 PM roycroft: it is infrared
07:43 PM lcnc-relay: <ccatlett1984@> bigger wavelength = lower on the light spectrum
07:43 PM roycroft: blue is a lower wavelength (450nm) but higher frequency
07:44 PM lcnc-relay: <ccatlett1984@> smaller wavelength = higher (extrem example are gamma rays)
07:44 PM memleak: what's the lowest wavelength things can go down to?
07:44 PM roycroft: 0, i would venture to say
07:44 PM lcnc-relay: <ccatlett1984@> gamma ray is the "shortest" = highest engergy
07:45 PM lcnc-relay: <ccatlett1984@> https://upload.wikimedia.org/wikipedia/commons/thumb/c/cf/EM_Spectrum_Properties_edit.svg/495px-EM_Spectrum_Properties_edit.svg.png
07:45 PM lcnc-relay: <ccatlett1984@> https://lenalighting.com/templates/yootheme/cache/2c/LL_wavelength_EN_002-2cfddd07.webp
07:46 PM memleak: so would all of this fall under physics?
07:46 PM xxcoder: all way to "infinitely small" but not exactly 0
07:46 PM lcnc-relay: <ccatlett1984@> yes, phsyics
07:46 PM memleak: ok yeah i never took a physics course lol
07:47 PM roycroft: arguably, everything in the universe falls under "physics"
07:47 PM lcnc-relay: <ccatlett1984@> i work with big laser cutters at the day job 😉
07:47 PM lcnc-relay: <ccatlett1984@> new shiny toy is a 6Kw fiber cutter
07:47 PM roycroft: my ir laser head is 2w :)
07:47 PM xxcoder: fancy
07:48 PM roycroft: that's output power
07:48 PM lcnc-relay: <ccatlett1984@> cuts 10mm thick steel plate @ 50mm/s
07:48 PM roycroft: not input power, like many of the chinese lasers are listed
07:48 PM xxcoder: yeah that annoys me
07:48 PM * roycroft is engraving brass at 5mm/sec, and it takes 5 passes to get a good engraving
07:49 PM roycroft: the little laser that could
07:49 PM roycroft: i think i can engrave, i think i can engrave, i think i can engrave
07:58 PM lcnc-relay: <ccatlett1984@> lol
08:07 PM xxcoder: I wonder if it'd be interesting to work as laser operator
08:08 PM lcnc-relay: <ccatlett1984@> eh, depends. running production parts, is running production parts.....
08:08 PM lcnc-relay: <ccatlett1984@> one off stuff / prototypes are more interesting
08:08 PM xxcoder: yeah im former cnc machinist that ran production parts
08:08 PM xxcoder: didnt care, as long as I could read as machine was running lol
08:09 PM lcnc-relay: <ccatlett1984@> mind you, we also do laser welding of dissimiliar metal thicknesses
08:09 PM lcnc-relay: <ccatlett1984@> ex. A blank = 1.8mm , to B blank = 0.8 mm
08:10 PM xxcoder: lol interesting
08:10 PM lcnc-relay: <ccatlett1984@> it's fairly niche
08:10 PM lcnc-relay: <ccatlett1984@> lots of automotive (think interior door panels), hinges attach to the thick blanks
08:11 PM lcnc-relay: <ccatlett1984@> we run "high mix"
08:11 PM lcnc-relay: <ccatlett1984@> have a 3axis gantry, with a 4kw fiber laser on it, for curved welds
08:12 PM xxcoder: wow that sounds cool to check out in least once
08:12 PM lcnc-relay: <ccatlett1984@> it's neat
08:12 PM xxcoder: too bad traveling is too hard for me
08:12 PM lcnc-relay: <ccatlett1984@> table setup is a royal bitch though
08:13 PM lcnc-relay: <ccatlett1984@> we use elctro-magnets for holding down the blanks
08:13 PM lcnc-relay: <ccatlett1984@> have to move them for each part
08:13 PM lcnc-relay: <ccatlett1984@> really isn't a better way
08:13 PM xxcoder: no positioning pins?
08:13 PM lcnc-relay: <ccatlett1984@> can't have "mis match" at the weld edge, has to be flush on one side
08:14 PM lcnc-relay: <ccatlett1984@> so edges must be supported
08:14 PM xxcoder: ya that would block using pins. doh
08:14 PM lcnc-relay: <ccatlett1984@> pins are used for parts loading, then removed after the A blank is placed, B blank is located against the A Blank
08:15 PM xxcoder: ahh
08:15 PM lcnc-relay: <ccatlett1984@> laser can only weld a gap of 0.008"
08:15 PM xxcoder: wow that tight
08:15 PM lcnc-relay: <ccatlett1984@> yeah
08:15 PM xxcoder: do it require a gap like some weld schemes
08:16 PM lcnc-relay: <ccatlett1984@> nope, butt joints
08:16 PM lcnc-relay: <ccatlett1984@> we allocate 4% material for scrap / destructive testing
08:16 PM lcnc-relay: <ccatlett1984@> 1 part / 100, gets a destructive test for weld strength
08:17 PM lcnc-relay: <ccatlett1984@> our "final" parts, go on to be ran through multi-die stamping
08:17 PM lcnc-relay: <ccatlett1984@> so weld can't just be cosmetic
08:17 PM xxcoder: I guess its welded due to differing densities
08:18 PM xxcoder: err thicknesses
08:18 PM lcnc-relay: <ccatlett1984@> mainly a weight savings for the end product
08:18 PM lcnc-relay: <ccatlett1984@> and cost, of course 😉
08:18 PM xxcoder: and less scrap output I guess
08:18 PM Tom_L: memleak, no not really
08:19 PM Tom_L: both had fairly good latency but the parport interface to the 7i90 behaves better with RTAI
08:19 PM Tom_L: mostly joint following errors even after trying quite a few things to fix it
08:21 PM memleak: ah ok
08:31 PM lcnc-relay: <skunkworks8841@> Well . The monarch might actually work
09:04 PM memleak: how does linuxcnc run headless?
09:04 PM memleak: someone asked me in the qtpyvcp channel about preempt_rt on a pi4 but it has broken video out
09:05 PM memleak: (qtpyvcp discord)
09:06 PM memleak: i'm slammed right now at the moment with gentoo amd64 stuff but i could see working on it down the road
09:13 PM roycroft: there are a couple ways to do that
09:14 PM roycroft: you can run a vnc server on the rpi, and connect to it with a workstation
09:14 PM roycroft: you can run an x server on your workstation and run linuxcnc using your workstation's display
09:15 PM roycroft: i don't know what kind of broken you're talking about
09:15 PM roycroft: but running an x server on your workstation should get around it
09:15 PM roycroft: vnc may or may not
09:20 PM lcnc-relay: <skunkworks8841@> https://youtu.be/lPu-8WWRVDg?si=l6rxG1TZiDIiDE9T
09:29 PM lcnc-relay: <big_kevin420@> there is
09:30 PM lcnc-relay: <big_kevin420@> lcncrush?
09:30 PM lcnc-relay: <big_kevin420@> i always pronounched it lcnc rush so idk what it actually uis
09:30 PM lcnc-relay: <big_kevin420@> lcncrsh? is that the headless thing?
09:31 PM lcnc-relay: <big_kevin420@> https://linuxcnc.org/docs/html/man/man1/linuxcncrsh.1.html
09:32 PM lcnc-relay: <big_kevin420@> or....rockhopper? is that the other thing? that pocketNC uses
09:43 PM lcnc-relay: <skunkworks8841@> I don't think I played with any of them..
10:27 PM xxcoder: https://science.slashdot.org/story/25/02/18/166204/scientists-develop-injection-to-make-smartphone-and-ev-batteries-last-longer
10:28 PM xxcoder: wow great for ev future
10:51 PM memleak: meanwhile i want to roll coal next to every tesla i see on the road
10:53 PM lcnc-relay: <tyrantelf@> If your vehicle can roll coal you're just as bad as any of the tesla pricks
10:55 PM memleak: heyyyyy i'm a stuck up corporate type at least
10:55 PM memleak: *i'm not
10:55 PM memleak: "did i say you could talk to me" kinda crap
10:55 PM memleak: pretentious a-holes.
10:59 PM lcnc-relay: <captainhindsight_.@> https://photos.app.goo.gl/HH5wsSRraTSRPorN7
10:59 PM lcnc-relay: <captainhindsight_.@> It lives!
11:00 PM xxcoder: :)
11:00 PM lcnc-relay: <tyrantelf@> congrats. I totally didn't pre-cringe expecting it to immediately crash into the head
11:01 PM lcnc-relay: <captainhindsight_.@> LCNC was seg faulting on this earlier
11:02 PM memleak: one argument i hear a lot, and i'm not sure if it's true, is that the amount of resources/mining it requires to build EVs is worse than gasoline-powered vehicles.
11:02 PM xxcoder: japan already come up with perfect recycling program
11:02 PM xxcoder: and well look at my earlier link
11:03 PM memleak: i did, they found a way to basically bring back to life, dead lithium-ion batteries
11:04 PM memleak: but i've noticed scientific advancements happen all the time but none of it goes mainstream.
11:04 PM xxcoder: failure to market is biggest issue in battery new techs
11:04 PM memleak: like when will a company like Ford actually apply their efforts?
11:04 PM xxcoder: they are?
11:06 PM memleak: ford uses those injections already?
11:06 PM xxcoder: ah thought you meant ev in general. no its very new
11:06 PM memleak: no no, like people will make ground-breaking discoveries all the time but the research just sits there
11:07 PM lcnc-relay: <tyrantelf@> when its actually tested, verified, and other impacts are measured. And more realistically when its economically feasible, so probably never
11:07 PM xxcoder: yeah getting to market is huge and hard task
11:07 PM lcnc-relay: <tyrantelf@> Ford and every other auto manufacturer prefers to sell a new car every 3-4 years when someone's scared the battery is going to go
11:09 PM xxcoder: yeah if thats true then ev would sink
11:09 PM xxcoder: why buy ev when ice last for a decade or more
11:09 PM memleak: GM has been proposing hydrogen powered cars for example and one of them was even on top gear years ago, nothing has come of it yet
11:09 PM xxcoder: hyrogen is leaky
11:10 PM xxcoder: and quite lossy energy carrier, so it'll never happen
11:10 PM memleak: and then i hear people talking about fusion, and i'm not sure what's actually come of that either
11:10 PM xxcoder: major step recently on fusion
11:20 PM roycroft: this is the decade of nuclear fusion power
11:21 PM roycroft: just like this is the year of the linux laptop
11:21 PM xxcoder: its been decades of fusion in 10 years
11:21 PM xxcoder: it might actually happen this decade, but then maybe not. like I said, there was major step recently