#linuxcnc Logs

Aug 13 2020

#linuxcnc Calendar

12:01 AM jesseg: roycroft, roger on that
01:17 AM Loetmichel: mornin'
01:18 AM XXCoder: hey
01:43 AM Centurion-Dan2 is now known as Centurion_Dan
01:52 AM Loetmichel: GNAH, that ender3 3d-printer wants to mock me... hearing the extruder skip, going there looking at it: all fine. turn around: *SKIP* turn back looking at it: all fine. turn around to go back to my desk: *SKIP SKIP*... 4 times in a row ;)
02:10 AM jymmmm: Ok, this is a bit sad... 12VDC PS, then use a step up converter to get 15V for charging, then a step down to get constant current and charging cutoff functionality
02:11 AM jymmmm: Loetmichel: It's mucking with you for sure =)
02:11 AM Loetmichel: indeed ;)
02:13 AM jymmmm: Loetmichel: are most lipo chargers buck, boost, or both?
02:13 AM Loetmichel: most i know are SEPIC type
02:14 AM Loetmichel: meaning they can do both
02:14 AM Loetmichel: for "universal" chargers though
02:15 AM jymmmm: Loetmichel: are there any $20ish ones that can do liFePO4 ?
02:15 AM jymmmm: Loetmichel: ....around 20A ?
02:16 AM Loetmichel: not that i know of
02:16 AM jymmmm: Loetmichel: HK seems to be out of stock of a lot of chargers
02:16 AM Loetmichel: the ones i have (Imax B6) are $20ish but can only do 5A
02:17 AM jymmmm: ah
02:18 AM jymmmm: Loetmichel: will they remember the "last setting" when unpowered?
02:18 AM Loetmichel: yes
02:19 AM Loetmichel: but they need a couple button presses to start charging when repowered. not what you need for solar.
02:20 AM jymmmm: bah, bummer
02:20 AM Loetmichel: its still about your solar battery pack, isnt it?
02:21 AM jymmmm: Loetmichel: Yeah, but not solar charging, AC. Just need to be able to shut off once fully charged, but can't find anything in the 20A range
02:23 AM jymmmm: Loetmichel: This is step up, with CC/CV, https://www.aliexpress.com/item/4001154063953.html
02:24 AM jymmmm: but no cutoff and limited to 15A
02:26 AM Loetmichel: Hehe, am i glad that most power lines are underground here in germany.. just had mother of all lightnings and thunder, lights slightly flickering and now a DOWNPOUR going on here... that would have been expensive if that had hit the power lines, considering how many PCs are running here at the company ;)
02:27 AM jymmmm: Loetmichel: https://www.amazon.com/Converter-Yeeco-Voltage-Regulator-Adjustable/dp/B00MIJL4OC
02:28 AM jymmmm: Loetmichel: 3 pots: CC, CV, and cutoff
02:29 AM Loetmichel: looks like it would work
02:31 AM jymmmm: but the 8A limit, unless I could parallel them
03:38 AM Loetmichel: GNAH 10k Dsub studs on stock but not a single 4-40 nut... good thing i have a lathe... (made some nuts form dsub studs)
03:39 AM XXCoder: lol
04:31 AM XXCoder: that is damn small lathe https://youtu.be/bG3rvkpDsdg
04:59 AM JT-Cave: morning
05:01 AM XXCoder: hey
05:20 AM Deejay: hi
09:00 AM beachbumpete1: Hey Deejay!
10:36 AM jymmmm: Is this any good for anyone, motion controller/ DRO /PLC thingy??? https://www.aliexpress.com/item/32976125473.html
10:39 AM Rab: jymmmm, I've never used one, but I believe some of those things have been reverse engineered and had open source firmware written.
10:39 AM Rab: If that's an incentive to choose one over another.
10:39 AM jymmmm: Rab: oh nice. This is interesting too... https://www.aliexpress.com/item/4000103627663.html
10:41 AM Rab: jymmmm, interesting indeed. But for that price you're into decent Mesa territory, cost of chinese pendant included.
10:41 AM jymmmm: wireless pendant with LCD
10:42 AM Tom_L: this looks cool though: https://www.aliexpress.com/item/4000050575154.html?spm=a2g0o.detail.100009.6.71987064P5kzD5&gps-id=pcDetailLeftTopSell&scm=1007.13482.95643.0&scm_id=1007.13482.95643.0&scm-url=1007.13482.95643.0&pvid=ee2c4b20-0e63-440d-a900-22b60a1b2890&_t=gps-id:pcDetailLeftTopSell,scm-url:1007.13482.95643.0,pvid:ee2c4b20-0e63-440d-a900-22b60a1b2890,tpp_buckets:668%230%23131923%230_668%23808%233772%23939_668%23888%233325%2310_668%232846
10:42 AM Tom_L: %238113%23608_668%232717%237564%23606_668%231000022185%231000066056%230_668%233480%2315683%23373
10:42 AM Tom_L: forget that
10:42 AM JT-Shop: lol
10:42 AM Tom_L: https://www.aliexpress.com/item/4000050575154.html
10:43 AM jymmmm: wired usb pendant https://www.aliexpress.com/item/32993270936.html
10:43 AM Rab: Tom_L, good for work, and for Halloween.
10:43 AM Tom_L: ok that link came up different here than on my brouser
10:44 AM Tom_L: was a ring coolant sprayer for your spindle
10:44 AM jymmmm: I saw the ring thing
10:45 AM Rab: jymmmm, I can't stop from seizing this opportunity to gush about the OpenXHC project: https://bitbucket.org/moonglow/openxhc/src/master/
10:45 AM Tom_L: jymmmm, find the link...
10:45 AM jymmmm: Tom_L: for?
10:45 AM Tom_L: the ring
10:46 AM Rab: Recreates the china pendants in a cheap bluepill board, supports a bunch of different LCDs and other peripherals, and you can customize it to your own needs.
10:52 AM roycroft: that looks like a cool project, rab, although it looks like it's not doing much
10:52 AM roycroft: maybe it's perfect already and does not need any further deelopment
10:54 AM jymmmm: I kinda want, but not sure about from "KKK store"... https://www.aliexpress.com/item/32627817772.htm
10:56 AM Rab: Hmm, I had to add an 'l' to that link.
10:57 AM * JT-Shop ponders how to remove dried up beer from the paper guide slides in the printer while eating lunch
10:58 AM jymmmm: JT-Shop: qtips?
10:59 AM Rab: If you can take the assembly off, maybe soaking it?
10:59 AM * Rab ponders rotary table workholding quandary
11:00 AM Rab: The part came loose yesterday...just a case of insufficient pondering, I hope.
11:07 AM jymmmm: dishwasher?
11:08 AM JT-Cave: don't think the printer will fit in the dishwasher...
12:35 PM jymmmm: JT-Cave: Well, if the printer won't fit in the dishwasher, I'd suggest grabbing an ice cold beer instead
12:37 PM roycroft: and now the forecast for saturday calls for a high of 40
12:38 PM roycroft: that is going to be a miserable day
12:39 PM * jymmmm smacks roycroft with fahrenheit 2x4
12:39 PM Rab: Highs of 40C here this week, and through the weekend. Not recommended.
12:41 PM jymmmm: Rab: You are in EU?
12:41 PM roycroft: unfortunately i have to run the bench top pieces through the thicknesser
12:41 PM roycroft: and that is happening on saturday
12:41 PM roycroft: i cannot do it with the shop closed up - even if i perform the operation inside the shop i'll have to move several pieces of machinery outside to make room
12:42 PM roycroft: so i'll try to do that early in the day, before the heat comes on
12:42 PM jymmmm: roycroft: Get off your lazy ass and GIT ER DONE now, quit slacking off sleeping and shit
12:42 PM roycroft: the glue has to cure first
12:42 PM roycroft: it's not my schedule - it's the glue's
12:42 PM jymmmm: 3 day glue, homie aint buying it
12:43 PM roycroft: that's actually pushing it a bit for a full cure
12:43 PM roycroft: but it should be good enough that i can do some machining then
12:43 PM jymmmm: it's glue, not concrete
12:44 PM roycroft: yes, and it's soft and still has moisture
12:44 PM roycroft: it will gum up the cutters if i machine it now
12:44 PM * jymmmm introduces roycroft to the invention of this thing we call fire
12:44 PM roycroft: and when it fully cures it will have lost more water, and the wood will shrink and no longer be dimensioned properly
12:45 PM jymmmm: roycroft: Seriously, are you using a PU glue?
12:45 PM Rab: jymmmm, Texas. So we would call it 104F.
12:46 PM roycroft: i'm using titebond iii, which is hpva
12:46 PM Rab: Only fffuuuuu, I see tomorrow is forecast for 107F/41-1/3C.
12:46 PM jymmmm: Rab: ah. There's like literally only ONE thing I can think of for living in Texas
12:46 PM Rab: But you know, C could mean literally almost everywhere else in the world.
12:47 PM roycroft: i gave up on this country and converted decades ago
12:47 PM Rab: jymmmm, careful now, Texas might only want one thing from you either.
12:47 PM roycroft: we've only been adopting the metric system since the 1870s
12:48 PM roycroft: i grew impatient after over 100 years with little progress towards doing the sensible thing
12:48 PM jymmmm: Rab: Nope, only ONE thing... gun laws, or lack there of.
12:48 PM Rab: jymmmm, oh yeah
12:49 PM jymmmm: Yeah, you want a 400cal? Move to texas =)
12:51 PM jymmmm: C is celcius almost everywhere
12:52 PM jymmmm: I did have to make a mm/inch chart just a couple days ago. 1mm-920mm, and fits nicely on one printed page
12:53 PM Rab: jymmmm, I like shooting guns, although I don't like cleaning guns or killing creatures. Anyway this just happened here, and I'm not sure it reflects a healthy gun culture: https://www.foxnews.com/us/austin-police-release-man-who-says-he-shot-armed-protester
12:55 PM Rab: (Fox News isn't my first choice, but the story is reported factually and most of the other Google results for this incident are total cesspools.)
12:56 PM jymmmm: Rab: That story is sad for OH SO MANY reasons
12:56 PM Rab: jymmmm, yes.
12:56 PM jymmmm: Rab: Yeah, I don't like ANYTHING (man or beast) that kills for sport, food is acceptable.
12:56 PM Tom_L: only in Tx
12:57 PM jymmmm: Tom_L: hardly
12:58 PM jymmmm: Rab: Wait, cleaning isn't so bad
12:58 PM Tom_L: it's a gun weilding state
12:58 PM Tom_L: that or the deep south
12:58 PM Tom_L: shoot then wonder if it was ok
12:58 PM Rab: Anyway, on systems of measurement...I happen to like decimal inches, but I think a true renaissance artist will cultivate a talent for conversion between systems rather than stressing out about society's failings.
12:58 PM jymmmm: Tom_L: Eh, I see firearms as a tool, just like a screwdriver. Other's, well, they see it differently
12:59 PM Tom_L: same here
12:59 PM Tom_L: i got a 50cal mounted to the roof
12:59 PM Tom_L: :)
12:59 PM jymmmm: Sssshit, I want a mini phalanx on the roof of my car for "rush hour traffic" :D
01:00 PM Rab: jymmmm, I don't like cleaning machine tools either, but in this climate they turn into tragic rust balls otherwise.
01:00 PM jymmmm: Rab: Just wrap your shop in plastic wrap, problem solved =)
01:01 PM jymmmm: stretch wrap*
01:01 PM Rab: jymmmm, I cover my mill with an old shower curtain, and it does help considerably. Keeps dust off, too.
01:02 PM Tom_L: put desiccant bags under it too
01:02 PM jymmmm: Rab: Seriously, you might consider using a movers blanket, then a tarp/shower curtain
01:02 PM jymmmm: Rab: The movers blanket would absorb moisture
01:02 PM Tom_L: a real tarp might help
01:02 PM Tom_L: the old cloth type
01:03 PM Tom_L: i keep one over my lathe
01:03 PM Rab: jymmmm, I'm sorta worried about anything porous. Wood doesn't seem to be good up in direct contact with tools, for instance. But I don't have a clear idea of the science involved.
01:05 PM Rab: Thermal cycling and condensation seem to be killer.
01:05 PM jymmmm: Rab: Rust = condensation/relative humidity = moisture, with that said, Instead of the mositure collecting on your iron, an movers blanket would absorb mositure before coming into contact with metal... https://www.harborfreight.com/72-inch-x-80-inch-movers-blanket-66537.html
01:06 PM jymmmm: Rab: You can always use some sort of standoffs if you don't want direct contact
01:07 PM jymmmm: Rab: Just a thought
01:21 PM roycroft: i use what harbor freight sell as painters' drop cloths to cover my metalworking machines
01:22 PM roycroft: they're more like coarse burlap than anything resembling a proper drop cloth, but that works well for the machines
01:22 PM roycroft: and i cover those with old ez-up canopies
01:22 PM roycroft: to keep the burlappy things from getting full of swarf and dust
01:23 PM * roycroft figures just about everyone has had an ez-up or two whtere the frames got damaged
02:16 PM CaptHindsight: jymmmm: if you show one of the $125 CNC controllers to a reprapster they won't be able to tell the difference between it and LCNC or Fanuc
02:17 PM jymmmm: CaptHindsight: lmao
02:45 PM CaptHindsight: https://discord.gg/X3zKzhc is not very busy
02:46 PM CaptHindsight: last comments were in late July
02:58 PM Rab: Finally got my new fly cutter, six weeks transit from India. I probably could've made one with a file and an old tie rod in the meantime.
03:03 PM roycroft: patience is a virtue
03:07 PM CaptHindsight: https://imgur.com/xomcQTc leftover 4:3 LCD and PC cabinet from the 00's
03:07 PM CaptHindsight: do they still sell 4:3 LCD monitors?
03:09 PM jymmmm: CaptHindsight: thoughts??? https://www.aliexpress.com/item/32880245730.html
03:10 PM CaptHindsight: run at your full load and monitor the heat sink temp at it base
03:11 PM CaptHindsight: then add enough fan to keep it ambient +20C and it should happily run for years
03:11 PM Deejay: gn8
03:12 PM jymmmm: Deejay: gn9
03:12 PM jymmmm: CaptHindsight: think it's any better quality than yours?
03:12 PM Deejay: :)
03:12 PM CaptHindsight: i might have that one as well
03:13 PM CaptHindsight: looks familiar
03:13 PM CaptHindsight: they just cheap out on the heat sink, it it runs for a few weeks they don't care
03:13 PM CaptHindsight: or derate the output power by >50%
03:14 PM CaptHindsight: for realistic power out vs heatsink size
03:14 PM jymmmm: CaptHindsight: IT's the power I'm needing, I can't find higher amperage in a stepup with CC/CV features
03:14 PM CaptHindsight: they even mention: Output current: 20A MAX More than 18A, please strengthen the heat dissipation
03:15 PM CaptHindsight: (enhance the heat (sink) when the ambient temperature is too high)
03:15 PM jymmmm: CaptHindsight: Yeah, I really want 25A nominally, and like 40A MAX
03:16 PM CaptHindsight: jymmmm: just make the heatsinks more bigger
03:16 PM CaptHindsight: and/or add fans
03:17 PM jymmmm: CaptHindsight: I can do those things, but still looking/wanting 25/40A, they just don't seem to exist
03:18 PM jymmmm: CaptHindsight: They do say can be parallel, I'm not sure how that can be true as I doubt they are isolated.
03:31 PM CaptHindsight: isolated in a power supply "usually" means the inputs are isolated from the outputs
03:32 PM CaptHindsight: for a switching supply it's usually done via a transformer that also acts as the output inductor
03:34 PM jymmmm: ah
04:58 PM unterhaus_: how do you get affected by linux malware?
04:58 PM CaptHindsight: just ask
05:00 PM CaptHindsight: or use ubuntu :0
05:01 PM CaptHindsight: most linux distributions come with NO firewall, ip tables set and SSH left open as default
05:03 PM CaptHindsight: unterhaus_: file:///tmp/mozilla_ly0/introduction-linux-based-malware-36097.pdf
05:03 PM CaptHindsight: oops https://www.sans.org/reading-room/whitepapers/malicious/introduction-linux-based-malware-36097
05:04 PM Rab: CaptHindsight, I thought that was how you were planning to activate the rootkit on unterhaus_'s machine.
05:06 PM jymmmm: Rab: Why? unterhaus_'s password is 'password' -shrug-
05:07 PM unterhaus_: password can't be an empty string
05:07 PM XXCoder: man mine is far more complex
05:07 PM XXCoder: its passwordone1
05:07 PM jymmmm: unterhaus_: wanna bet?
05:08 PM unterhaus_: I have a really great password, but unfortunately microsoft knows it
05:08 PM Tom_L: yeah google told them
05:09 PM jymmmm: s/google/myspace/
05:10 PM CaptHindsight: when Ron (lead LinuxBIOS/coreboot dev) worked at Los Alamos and Sandia they simulated massive bot attacked on the supercomputers with millions of machines
05:10 PM CaptHindsight: If you look up their work you can find howto setup your own virtual internet with bot attacks
05:12 PM CaptHindsight: virtual internet war games with millions of infected machines
05:12 PM jymmmm: or just stream 4k
05:13 PM CaptHindsight: yeah stream HBO using wordpress from any linux machine and then sit back for a few minutes
05:14 PM CaptHindsight: http://123tvgo.com/watch/hbo/ for example
05:17 PM CaptHindsight: and visit 4chan
06:15 PM _unreal_: Thats it I now have a working dust shoe
06:16 PM _unreal_: I still need to put the front window on but other then that :)
06:16 PM _unreal_: its a nice...
07:20 PM jymmmm: Tom_L: https://www.youtube.com/watch?v=KIHGHWJFyGU
07:30 PM jymmmm: Tom_L: skunkworks scope current probe mod https://www.youtube.com/watch?v=KIHGHWJFyGU
07:45 PM CaptHindsight: don't mention LinuxCNC in the Discord DIY SLA 3D Printers, you get banned
07:45 PM XXCoder: wtf why
07:45 PM Tom_L: haha
07:45 PM CaptHindsight: groups disguised as marketing platforms for people trying to sell their hardware/software
07:45 PM Tom_L: got yer toes stepped on ehh?
07:46 PM CaptHindsight: it's ok, just don't be a douche about it
07:46 PM Tom_L: i felt that way in reprap and ended up leaving
07:46 PM CaptHindsight: Orange Pi + LinuxCNC replaces their year of work trying to make and sell an STM32 or atmel sam5 board with marlin
07:46 PM XXCoder: irc channel reprap is mostly ok
07:47 PM _unreal_: so my dust shoe is working everything is now working and WOW that new spindle is just cold to the touch
07:47 PM XXCoder: isnt orangepi quite underpowered?
07:47 PM _unreal_: even under heavy load
07:47 PM _unreal_: andthe motor controller for the new spindle stays cool as wel
07:47 PM CaptHindsight: only IF you want a big backplot
07:48 PM XXCoder: hm ok
07:48 PM XXCoder: on that line of thought, whats up with rpi4 and lcnc?
07:48 PM CaptHindsight: XXCoder: it's mostly just that groups revulsion of PC's in general, they think anything other than a PC is better than a PC
07:48 PM XXCoder: pretty dumb really
07:48 PM CaptHindsight: I have PC's that cost me nothing, cheaper than the $10 for some versions of the Orange pi
07:49 PM CaptHindsight: XXCoder: good enough for software stepping to a few KHz, use the Mesa FPGA for more steps/sec
07:49 PM _unreal_: so I am in love at this point with the new setup
07:49 PM XXCoder: yeah I was thinking if I ever go rpi4, I would use mesa
07:50 PM CaptHindsight: the Rpi's have to be kept cool to run 2k or 4K displays
07:50 PM _unreal_: I can mill aluminum like it was nothing
07:50 PM CaptHindsight: the Orange pi however has an integrated microcontroller so it can software stepp to >400Khz
07:50 PM CaptHindsight: so you don't NEED the Mesa FPGA
07:50 PM XXCoder: ahh i see
07:51 PM CaptHindsight: can if you still want
07:51 PM _unreal_: now when I can afford it I need to get some nice ball nose two flute up cut end mill bits
07:51 PM XXCoder: im not sure what my linuxcnc can do on terms of step
07:51 PM XXCoder: been while since i last booted it
08:03 PM CaptHindsight: it was kind of odd to see FDM printers without a backplot or preflight
08:04 PM CaptHindsight: i think reptier had them
08:05 PM CaptHindsight: I'd think that they would also want other common CNC features like feed rate adjustment while running
08:05 PM CaptHindsight: maybe octoprint has it
08:21 PM SpeedEvil: Tehre are depressingly many interrelated settings on FDM
08:25 PM CaptHindsight: " i think CNC has been around for decades but lets just ignore it and write it my way"
08:26 PM XXCoder: yeah
08:26 PM XXCoder: so many cnc standards was ignored
08:26 PM XXCoder: toolchange just need tool numer - t1
08:26 PM XXCoder: g54 so on not used at all, just ,machine coord
08:27 PM XXCoder: want print 2 parts with one sliced part, but at different coords? not possible. you'd have to slice aain but with 2 parts
08:32 PM CaptHindsight: someone asked my why i would want to re-invent the wheel and use LinuxCNC to control a printer
08:32 PM CaptHindsight: I laughed and said who is re-inventing this?
08:34 PM CaptHindsight: I'm finding two basic types of people. Those that just think that PC's are obsolete and ..
08:34 PM CaptHindsight: when I show them LinuxCNC on a pi they just understand how LCNC can be used for a printer
08:34 PM CaptHindsight: sorry, just don't understand
08:35 PM * jymmmm is STILL waiting for the LCNC android app
08:35 PM ziper: https://i.imgur.com/o8DOVRs.png
08:35 PM Tom_L: jymmmm, stop waiting and start writing
08:36 PM Tom_L: bluetooth servo control...
08:39 PM jymmmm: Tom_L: Fiiine..... 10 LPRINT CHR$(12); 20 GOTO 10; //There done, happy now?
08:43 PM CaptHindsight: jymmmm: you have to be a member of the CNCattheBeach Club
08:45 PM CaptHindsight: meetings are held monthly under the water so they can see if you are spying at the beach
08:45 PM jymmmm: CaptHindsight: More like Iwouldn'tCareBecauseI'mAtTheBeach Club
08:46 PM CaptHindsight: first step is sending a picture of sand between your toes to your local lifeguard
08:47 PM jymmmm: S/he might get a pic, but not of my toes ;)
09:04 PM unterhaus_: wonder how long my lathe is going to keep moving
09:04 PM unterhaus_: definitely not going to use a better level
09:23 PM roycroft: it may move for weeks, unterhaus_
09:23 PM roycroft: especially if it's not just the lathe that's moving
09:23 PM roycroft: the floor it's on could be moving too
09:24 PM Tom_L: you could be living over a sinkhole after all
09:25 PM unterhaus_: wouldn't surprise me if there is a gap under the slab
09:26 PM roycroft: you can use the lathe while it's still settling in
09:26 PM unterhaus_: I doubt it has ever been leveled, probably some buildup
09:26 PM roycroft: it will just be hard to hold close tolerances with it whiel it's moving
09:27 PM unterhaus_: I wanted to get it level so I can dial in the encoder a little more easily. Probably close enough at this point
09:33 PM roycroft: i haven't leveled mine in several months
09:33 PM roycroft: it's probably a bit out of whack now
10:23 PM _unreal_: https://cdn.discordapp.com/attachments/717411349541683212/743671078756286484/15973753697117633859865988076887.jpg
10:25 PM _unreal_: the final setup working dust shoe
10:25 PM _unreal_: I have spring loaded retainers as well
10:25 PM _unreal_: so it jumps into place with magnets
10:26 PM _unreal_: then I push and twist the spring loaded holders down to make sure the dust shoe can not fall off
11:01 PM pink_vampire: _unreal_: discord?
11:01 PM pink_vampire: what server?
11:05 PM _unreal_: ? oh hehe
11:05 PM _unreal_: stocks room
11:06 PM _unreal_: was an easy way to post the photo
11:06 PM _unreal_: rather then upload it to my google drive
11:09 PM jymmmm: Yeah, pink_vampire is the Discord Queen
11:10 PM pink_vampire: jymmmm: lol that is true
11:15 PM _unreal_: ?
11:51 PM XXCoder: shoot mne
11:51 PM XXCoder: pink_vampire: hey
11:53 PM pink_vampire: hi XXCoder
11:53 PM XXCoder: whats up in your amazing shop[
11:55 PM pink_vampire: someone know about a foundry that can so short runs and one offs?
11:56 PM pink_vampire: in gray cast iron