#linuxcnc Logs

May 14 2021

#linuxcnc Calendar

12:00 AM buzzmarshall: hey as long as ones having fun and learning thats great
12:09 AM buzzmarshall: nothing wrong with asking questions on things your trying to learn
12:09 AM roycroft: i'll mention again, because it's something i really believe is important, but seems to be an afterthought at most to many, that using a latching contactor for the mains and tying the e-stop into that circuit is something you should absolutely do on the motion control side of your machine
12:10 AM roycroft: if you have a power failure you want to be 100% certain that the machine will not start up on its own when power is restored
12:10 AM buzzmarshall: for sure i would agree
12:10 AM roycroft: if you hit the e-stop you want to be 100% certain that the machine will not start up on its own when you reset it
12:11 AM roycroft: it's a simple circuit to build, and cheap
01:13 AM Deejay: moin
02:07 AM roycroft: i would agree with you, enleth
02:07 AM roycroft: home switches and limit switches serve different purposes
03:11 AM CaptHindsight: lack of limit switches is otherwise known as the self destruct feature
04:09 AM Tom_L: morning
05:10 AM JT-Cave: morning
05:33 AM net|: https://github.com/netpipe/RightHand close to finished the translator
05:58 AM Loetmichel: *GAH* Aaaand the next "fun" with incompatible measurements... Called a SMPS maufacturer: "I need 12 PSUs, maxim size 50mm by 38mm by 90mm... make some offers!..." got said offers, ordered 12. Today they arrived. PSU "brick" enclosures are already milled and bent and at the Powder coater. Tried to fit the PSU into the enclosure: its 60mm wide instead of 50mm... now i have 13 non fitting
05:58 AM Loetmichel: enclosures, probably back at monday in painted... and have to make another 12 in 10mm wider AND paint them all until wednesday to fit the delivery date. What did i do wrong to deserve that?
07:00 AM JT-Cave: must be a bunch of dumb asses in this county only 17% have completed the vaccination while most other counties are > 20-30%
07:01 AM XXCoder: :(
07:01 AM JT-Cave: 32% completed state wide
07:18 AM drdoc: this may be the weirdest auction I've ever seen
07:18 AM drdoc: everything from a collection of medium-format box cameras to a jar of marbles to an acrylic-encased turd
08:36 AM Loetmichel: Hmpf. Dsub shells made of injection molded zinc are strange. Full speed drill: its like drilling glass. no resistance at all. First gear slooow: cuts like a charm. Why?
09:13 AM roycroft: drdoc: my new motor is installed, and it appears to be working fine
09:14 AM roycroft: it runs smoothly and quietly, but i don't have the shaft bushing yet, so i've not been able to test it under load
09:27 AM satiowadahc: G'Morning All.
09:30 AM satiowadahc: Anyone tried to use LCNC for foam cutters?
09:36 AM pcw_home: There are some sample configs for hot wire foam cutters
09:37 AM satiowadahc: I've seen a few of them, I just haven't seen if anyone uses them successfully
09:37 AM satiowadahc: Wondering how much work it'll be to convert it over
09:38 AM pcw_home: Convert?
09:38 AM pcw_home: I think they even had their own kinematics
10:31 AM mrec_: G96 is nice
10:35 AM buzzmarshall: theres a couple of foam manufacturers i used to service that use hot wire cutters all the time to cut their slabs from the blocks they produce, can't see why they wouldn't work
10:46 AM JT-Cave: the side by side we bought in 86 still works perfect, the fridge we bought when we built this house in 93 is DOA for the last time
10:49 AM veegee: Should I keep my HDPE drink bottles?
10:49 AM veegee: Or dispose of them for recycling?
10:49 AM veegee: Is there anything they would be useful for if I melt them? I don't think it can be 3D printed very well
10:50 AM veegee: But I guess it's fine for injection molding?
11:08 AM roycroft: our governor has just lifed the mask mandate for vaccinated people in most environments
11:09 AM roycroft: that is awesome, but i doubt that a single anti-vaxer will continue wearing a mask
11:09 AM roycroft: those who wore one to begin with
11:09 AM roycroft: but if the case count continues to decline it won't be as big a deal as it has been over the past year
11:10 AM * roycroft will be happy to see life returning to some semblence of normalcy
11:10 AM Tom_L: quite a few here still wear them even though it's not a requirement
11:10 AM Tom_L: btw, this is the new normal...
11:11 AM roycroft: the new normal will not be the old normal
11:20 AM pcw_home: I guess we are going to drop DHL as a shipper, repeated fraudulent weight inflation
11:21 AM drdoc: roycroft: good deal, dude.
11:21 AM roycroft: i'm not surprised, pcw_home
11:21 AM roycroft: i've heard a lot of bad things about dhl lately
11:22 AM drdoc: they're best-in-class for transcontinental, but DHL.us is awful
11:22 AM pcw_home: 8"x8"x3" $200.00 package they say 17 LBs (actual 1.5 lbs)
11:22 AM drdoc: zowie
11:22 AM pcw_home: last invoice 3 out of 5 are inflated
11:23 AM roycroft: have you addressed this with them?
11:23 AM drdoc: I might call the DA on that
11:23 AM * roycroft is curious about how they would attempt to explain it
11:24 AM drdoc: anyone need to waste $50-60?
11:24 AM drdoc: https://prosoftstore.com/cam/
11:24 AM drdoc: pcw_home: I can attest from recent experience that getting 17 pounds into that size package isn't easy
11:25 AM drdoc: sold a little over 100 pounds of scrap solder ingots in 10-30lb lots
11:25 AM pcw_home: 17 pounds is like 30-50 of our cards, we would remember that kind of a shipment
11:26 AM drdoc: no doubt
11:26 AM pcw_home: we have it linked to the webstore order number = 1.5 Lbs
11:26 AM drdoc: besides, 10 lb of 60/40 will just exactly fit a USPS Small Flat-Rate box
11:27 AM pcw_home: yeah we have not been shipping a lot of lead bricks around
11:27 AM drdoc: you're not getting 17 pounds of your product into an 8x8x3
11:28 AM drdoc: by the way, I would not call that inflation
11:28 AM drdoc: that's straight-up fraudulent
11:28 AM drdoc: much like that website I just posted
11:30 AM roycroft: i know that in my state, scales that are used commercially must be calibrated and certified
11:30 AM roycroft: so they would not be able to use the excuse that their scale is defective
11:31 AM drdoc: yup
11:32 AM pcw_home: off by 10x should be fairly easy to detect...
11:32 AM roycroft: if that box were filled to capacity with lead it would weigh just over 16lbs
11:33 AM pcw_home: must have been Tungsten
11:33 AM roycroft: there is gold in your cards, no?
11:33 AM pcw_home: That must be it
11:34 AM roycroft: it would weigh about 28 lbs if it were filled with gold
11:34 AM roycroft: so there you go
11:53 AM roycroft: i've found the usps are much more reliable lately
11:54 AM roycroft: that just said, my parcel that was due to arrive today apparently went back to seattle for the second time, and is now scheduled to arrive on monday
12:06 PM pcw_home: USPS international was badly impacted by loss of commercial passenger flights
12:07 PM JT-Cave: is that what happened?
12:10 PM pcw_home: a large amount of international USPS was shipped on passenger flights
12:11 PM pcw_home: it seems to be improving now as we ease out of the pandemic
12:14 PM JT-Cave: well the fridge started working again while we were out shopping for a new one
12:22 PM pcw_home: You scared it...
12:41 PM Tom_L: seems to be an ongoing fridge problem
12:50 PM CaptHindsight: appliances are like communist governments, they just want instability
12:50 PM bjorkintosh: unlike?
12:51 PM bjorkintosh: I can't think of many unstable communist governments. the last wobbly one lasted for a good while.
12:56 PM CaptHindsight: within their own countries they create illusions
12:56 PM bjorkintosh: it's required by any self respecting government.
12:56 PM bjorkintosh: I mean... we call it the 'murrican dream.
12:58 PM CaptHindsight: for the past 40 years, sure
12:59 PM CaptHindsight: you have to go back a bit in time to understand what that was about
12:59 PM bjorkintosh: what? post ww2 boom?
01:00 PM CaptHindsight: yes, and before
01:01 PM bjorkintosh: so that just goes to prove my point.
01:02 PM bjorkintosh: adam curtis covers this extensively.
01:03 PM bjorkintosh: who is Adam Curtis? Glad you asked. https://www.theguardian.com/theobserver/2015/jan/04/adam-curtis-bitter-lake-documentary-iplayer
01:06 PM CaptHindsight: when did they stop teaching history in the US?
01:06 PM Tom_L: when they started trying to hide it
01:06 PM bjorkintosh: hahahahah
01:07 PM bjorkintosh: the money had to go to the DoD... for defense purposes. you know. 'terrors abroad'.
01:07 PM bjorkintosh: another fucking illusion.
01:16 PM gigasu_shida is now known as gigas_cedar
01:23 PM CaptHindsight: bjorkintosh: George Carlin refers to post 1960's uhmerica
01:25 PM CaptHindsight: the Allwinner CNC dev is working on getting the stepgen working on the H5 and H6
01:27 PM CaptHindsight: now it just needs a good Linux distro with GPU accel drivers
01:28 PM CaptHindsight: https://linux-sunxi.org/H6
01:28 PM CaptHindsight: https://linux-sunxi.org/H5
01:29 PM roycroft: so, folks, touchscreen displays have come way down in price
01:29 PM roycroft: i have some old ones that i was going to use for linuxcnc, but they are old, scratched up, and i'm having issues with the touchscreen drivers
01:30 PM roycroft: are there any current models that are known to work well with linuxcnc?
01:30 PM CaptHindsight: boards with these are like an Rpi2/4 with an integrated micro for stepping >100KHz
01:30 PM roycroft: assuming debain 10
01:30 PM roycroft: debian
01:30 PM CaptHindsight: 3/4
01:31 PM roycroft: 17" is about the right size for my old eyes, and i see those going for a bit over $200 these days
01:31 PM roycroft: they used to cost >$1k
01:31 PM CaptHindsight: I don't understand, you said current and Debian
01:31 PM roycroft: yes
01:32 PM CaptHindsight: using Sid maybe
01:32 PM roycroft: https://www.amazon.com/ANGEL-POS-1006017-17-Inch-TouchScreen/dp/B0079LY9QO
01:32 PM roycroft: this, for example, is the type of thing i'm seeing
01:33 PM roycroft: it even has a vesa mounting option, which makes installing it in a control panel easier
01:33 PM bjorkintosh: wow.
01:34 PM CaptHindsight: roycroft: check the forums
01:35 PM CaptHindsight: if the controller is a few years old it has a chance
01:36 PM CaptHindsight: or build a newer kernel for Deb 10
01:39 PM roycroft: yeah, i know how to do the research
01:39 PM roycroft: my first stage of research regarding linuxcnc-type things is to ask here if anyone has direct experience with what i'm asking about
01:40 PM roycroft: because i've already vetted most folks here, and don't have to spend a bunch of time trying to figure out if a forum poster is speaking with knowledge and from experience or is talking out his arse
01:41 PM CaptHindsight: explanation not required
01:47 PM bjorkintosh: <roycroft> because i've already vetted most folks here, and don't have to spend a bunch of time trying to figure out if a forum poster is speaking with knowledge and from experience or is talking out his arse. Right. we're not elected officials.
01:48 PM bjorkintosh: they, have to specialize in the fine arts of speaking from the rear.
01:50 PM roycroft: two politicians get into an argument
01:50 PM roycroft: the first one says to the second one "that's a lie!"
01:51 PM roycroft: the second one says "yes, but hear me out"
01:51 PM bjorkintosh: hah!
01:52 PM roycroft: bill maher just cancelled his show for this week - for the first time ever since he started "polically incorrect" in 1993
01:52 PM roycroft: he has tested positive for covid-19
01:52 PM roycroft: he's fully vaccinated, and asymptomatic, but is being responsible
02:35 PM CaptHindsight: i wonder what his show would have evolved into if his development hadn't stopped
02:41 PM roycroft: maher?
02:42 PM CaptHindsight: yes
02:44 PM roycroft: he hasn't changed in 30 years
02:44 PM roycroft: i don't think he will now
02:44 PM roycroft: he was a smug, condescending jackass in 1993
02:45 PM roycroft: he is no different now
02:46 PM roycroft: i like parts of his point of view, but i dislike much of what he espouses
02:49 PM CaptHindsight: i still skim though them for the funny or interesting parts
02:51 PM CaptHindsight: I'd prefer a similar show hosted by Eric Idle or Cleese
02:52 PM roycroft: there are a number of things that i really dislike about maher
02:52 PM roycroft: 1. his hatred of all religion and everything about religion
02:52 PM roycroft: 2. his hatred of all muslim countries because of his assumption that every person living in those countries is an islamic terrorist
02:53 PM roycroft: 3. his totally binary political outlook - in his mind if you don't vote for democrats you're enbling republicans, because you are either a democrat or an anti-republican, and if you're an anti-republican you're required to vote for democrats
02:54 PM roycroft: there are a lot of other things i don't like about him, but those three are the major ones
02:55 PM CaptHindsight: https://www.youtube.com/watch?v=t2c-X8HiBng would prefer a show that operates at this level or higher
02:55 PM roycroft: followed closely by 4: all people who are overweight lack the discipline to keep themselves in good shape, and are the primary contributors to most of what is wrong with this country
02:56 PM roycroft: yes, that is a great sketch
02:56 PM CaptHindsight: yeah his food rant
02:57 PM CaptHindsight: thought I do agree we should deal the religious problem more seriously
02:57 PM CaptHindsight: thought/though
02:57 PM roycroft: one of the things i most like about maher is that he's just about the only non-republican who calls out wokeness
02:57 PM roycroft: and that alone almost makes up for the bad things
02:59 PM CaptHindsight: sums up Christianity too well https://www.youtube.com/watch?v=deDlab6vFgg
02:59 PM CaptHindsight: and cults in general
03:07 PM CaptHindsight: but a smarter and more evolved version of Maher would have fewer viewers
03:12 PM roycroft: he and his ilk are the reason that maga won in 2016
03:12 PM roycroft: and none of them even begin to understand that
03:14 PM roycroft: if you're trying to reach out to a very large demographic, "i love the poorly educated" beats "basket of deplorables" every time
03:14 PM * roycroft suspects we're straying from the topic again
03:24 PM CaptHindsight: you shouldn't call a useful idiot and idiot
03:24 PM CaptHindsight: not how drones work
03:26 PM CaptHindsight: Clinton used way too much "fag talk"
03:26 PM CaptHindsight: maher comes from a period when ridicule was used for discipline
03:27 PM CaptHindsight: if he had evolved he would know this and how things have changed
03:27 PM roycroft: clinton would have made a good president
03:27 PM roycroft: but she is one of the worst candidates on the democratic side since dukakis
03:28 PM CaptHindsight: they underestimated the power of mass stupid
03:28 PM CaptHindsight: they could have hijacked it the way the Great Pumpkin did
03:29 PM CaptHindsight: it even got away from Cheney
03:31 PM CaptHindsight: it's interesting finding similar patterns in ancient texts and evidence
03:31 PM roycroft: i don't call the 'poorly educated' idiots at all
03:31 PM CaptHindsight: Sumerians and Acadians
03:31 PM CaptHindsight: "useful idiots"
03:32 PM roycroft: if i'm honest, i see the current democratic-republican feud as no different to the half-blacks vs. the half-whites on star trek
03:32 PM CaptHindsight: drones. Borg etc
03:33 PM roycroft: i'm a member of the enterprise crew, and i look at them both and say "i can't see the difference between you two"
03:34 PM CaptHindsight: why most people are atreated like pets or livestock, it's just a resource
03:45 PM CaptHindsight: I'm all for more than just a silly party and very silly party
03:45 PM CaptHindsight: https://vimeo.com/338490074
03:45 PM roycroft: well there's the slightly silly party
04:04 PM Eric__: roycroft, I'm almost finished with the fence on my bandsaw. Finally
04:05 PM Eric__: I redid it once because I realized it wasn't easy to swap blades with it on the way the factory intended
04:05 PM roycroft: it's a nice fence
04:06 PM roycroft: but yes, some remodeling is necessary on most saws
04:13 PM Tom_L: roycroft, get your vfd tuned?
04:17 PM roycroft: yes, mostly
04:17 PM roycroft: i tested the motor last night
04:18 PM roycroft: but i don't have the shaft bushing, so i could not test it under load
04:18 PM roycroft: i ran the motor up to 4200rpm, and i could slow it down to about 1400rpm before it stalled
04:18 PM roycroft: i think i can tund it better than that, but i want to do that under load
04:19 PM Tom_L: yeah
04:19 PM roycroft: the motor is rated to run as slow as 760rpm
04:20 PM roycroft: if i'm honest i never ran the old motor at less than 3600rpm, but i'm going to be using the grinder for wood as well as metal now, and i'll need to slow it down quite a bit for wood
04:20 PM roycroft: otherwise it will burn when i put any pressure at all onit
04:21 PM roycroft: i'm not sure i need to run it as slow as 760rpm, but it shouldn't be stalling out where it is
04:22 PM Tom_L: nope
04:22 PM Tom_L: i finally got mine down around 100ish but don't plan to use it there
04:33 PM roycroft: my motor is inverter rated, but it does specify the minimum rpm, and i think i should respect that, so i'll not try to run it slower than that
04:41 PM Tom_L: lowest i typically run mine is 300 when using the edge finder
04:45 PM roycroft: well, it was a nice run for a few weeks
04:46 PM roycroft: but my youtube adblocker is completely useless as of a few minutes ago
04:46 PM XXCoder: roy i found other plugin that works very well
04:46 PM XXCoder: Enhancer for YouTube
04:47 PM roycroft: i'm pretty sure that won't work with my browser
04:48 PM XXCoder: firefox?
04:49 PM roycroft: i use safari
04:50 PM XXCoder: too bad oh well
04:51 PM roycroft: i'll just have to go back to downloading videos and watching them offline
04:53 PM roycroft: it may start working again
04:53 PM roycroft: i just downloaded and installed an updated to adblocker, and when i initially installed adblocker it took a few days before the ads stopped completely
04:53 PM roycroft: probably do to caches
04:53 PM XXCoder: is there way to remove cache for just one site?
04:54 PM roycroft: not that i know of
04:54 PM roycroft: but caches do expire
04:54 PM roycroft: if i start seeing some blocked ads again they will likely all be blocked before too long
04:55 PM XXCoder: ok
05:11 PM _unreal_: down to the last aspect for my laser etcher
05:11 PM _unreal_: getting the remote built.
05:11 PM _unreal_: I'd have it done already if it was not for the fact that I dont have the right kind of serial db9 adapter :(
05:12 PM _unreal_: less time to build a custom mount plate then to order the "right" part.
05:12 PM _unreal_: the right mount plate produces its own problems
05:13 PM _unreal_: err sorry the right db9 header
05:13 PM _unreal_: less but still
05:18 PM roycroft: there is no such connector shell called "db9"
05:18 PM roycroft: 9 pin d-shells are e size, not b size
05:19 PM Rab: roycroft, that's my lifetime pet peeve. But probably a lost cause at this point.
05:19 PM roycroft: i haven't given up
05:20 PM roycroft: but i'm a stubborn old fart
06:17 PM _unreal_: roycroft, kicad lists it as DB9, EAGLE pcb LISTS it as DB9
06:32 PM roycroft: that doesn't make it true
06:33 PM roycroft: it means they are also wrong
06:33 PM roycroft: it's a de9 connector
06:33 PM roycroft: the high density e shell is a de15
06:33 PM roycroft: which is commonly used for video displays
06:34 PM roycroft: 59.3% of residents in my county 16+ have had their first dose
06:35 PM roycroft: 47.2% have had both doses
06:35 PM roycroft: progress is slowing down, but we are still making progress
06:36 PM roycroft: that is as of 8am this morning, and the county are just starting a big vaccine push for teens - they're setting up clinics in the schools
06:37 PM Tom_L: if you say it long enough and loud enough it becomes truth
06:37 PM roycroft: no, there will never be a db9 connector
06:37 PM roycroft: never ever
06:37 PM Tom_L: ur just in denial
06:37 PM JT-Cave: lol
06:38 PM Tom_L: :) evening jt
06:38 PM JT-Cave: there is a DB9!
06:38 PM roycroft: there is db-25, db-44, and db-52
06:39 PM JT-Cave: and a DB9
06:39 PM JT-Cave: wanna bet?
06:39 PM roycroft: in the context of d-sub connectors
06:39 PM JT-Cave: nope
06:39 PM Tom_L: what are the 3 row ones called?
06:39 PM roycroft: high density
06:39 PM XXCoder: well theres 3d printer. you can design a new connector
06:39 PM JT-Cave: Aston Martin DB9
06:40 PM roycroft: so in the de series, de-9 is standard density, de-15 is high density, and de-19 is double density
06:41 PM Tom_L: did you try to google a DE-9?
06:41 PM roycroft: no, i did not need to
06:41 PM roycroft: d-sub connector densities are common knowledge :)
06:41 PM Tom_L: you get far different results than a DB-9
06:42 PM roycroft: that would probably be because a lot of people are wrong
06:42 PM Tom_L: if you say it long enough and loud enough it becomes truth
06:43 PM roycroft: some people believe that
06:43 PM roycroft: but the fact remains that there was no widespread fraud in our recent election
06:43 PM Tom_L: followers fall for that
06:44 PM Tom_L: no one will ever know the truth of that
06:44 PM roycroft: that fact is immutable
06:50 PM _unreal_: milling my serial mounting plate now :)
09:44 PM mrec_: so basically to create a hardware stepgen all that is needed is just a pulse generator + counter/gate + counter?
11:11 PM mrec_: G72 is not implemented in LinuxCNC 2.8?
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