#linuxcnc Logs

Sep 09 2022

#linuxcnc Calendar

01:55 AM Deejay: moin
04:39 AM Tom_L: morning
05:23 AM JT-Cave: morning
06:11 AM miss0r: g'day
06:24 AM JT-Cave: 57°F at the moment
07:03 AM Tom_L: 65°F
07:06 AM Tom_L: working on arm64 preempt-rt kernel a bit today
07:08 AM JT-Cave: cool
07:09 AM JT-Cave: which image are you starting with?
07:11 AM Tom_L: 5.15.64 iirc
07:11 AM Tom_L: the kernel it has is 5.15.61
07:13 AM Tom_L: for bullseye
07:14 AM -!- #linuxcnc mode set to +v by ChanServ
07:21 AM Tom_dev: https://github.com/raspberrypi/linux
07:21 AM Tom_dev: https://mirrors.edge.kernel.org/pub/linux/kernel/projects/rt/
07:21 AM Tom_L: unless you have a better idea :)
09:26 AM skunkworks: https://www.youtube.com/watch?v=K1yNw-DbM_0
09:32 AM Tom_L: time for metal parts
09:33 AM skunkworks: do I try freecad/cam?
09:33 AM skunkworks: that is the question..
09:33 AM Tom_L: no clue
09:33 AM Tom_L: how brave are you?
09:33 AM skunkworks: lol
09:34 AM Tom_L: i can't tell if these patches are RT or not
09:34 AM Tom_L: they're in the rt directory...
09:34 AM Tom_L: menuconfig looks a little odd
09:36 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/live-build/kernel.png
09:36 AM Tom_L: what do you think?
09:38 AM Tom_L: doesn't say RT
09:39 AM JT-Shop: iirc you need to search for fully preempt or something like that
09:40 AM -!- #linuxcnc mode set to +v by ChanServ
09:40 AM Tom_dev: https://mirrors.edge.kernel.org/pub/linux/kernel/projects/rt/
09:41 AM Tom_L: i can't really tell
09:44 AM skunkworks: I haven't built a kernel in years.. And then it was following peters directions..
09:44 AM Tom_dev: i built an older one but it didn't boot which i figured it wouldn't
09:44 AM Tom_dev: but wanted to refresh the steps
09:46 AM JT-Cave: https://gnipsel.com/linuxcnc-old/uspace/rpi4-rt.html
09:47 AM JT-Cave: that's how I did it last time but the version of rt would need to be updated
09:48 AM Tom_dev: where did you find kernel171?
09:48 AM Tom_dev: in KERNEL=kernel171
09:51 AM JT-Cave: hmm don't remember where I found that
09:51 AM JT-Cave: prob wrong for a more recent version
09:51 AM Tom_L: no doubt
09:52 AM Tom_L: i got the patches from kernel.org i think
09:52 AM Tom_dev: the regular kernel in bullseye is 5.15.61 so i tried to get as close to that as i could
09:53 AM Tom_dev: i'll let it finish building and see i guess
09:53 AM JT-Cave: https://raspberrypi.stackexchange.com/questions/104722/kernel-types-in-raspbian-10-buster
09:55 AM Tom_dev: the test one i built was kernel8.img
09:55 AM Tom_dev: maybe the wrong arm class?
09:55 AM Tom_dev: i dunno
09:57 AM Tom_dev: https://www.instructables.com/64bit-RT-Kernel-Compilation-for-Raspberry-Pi-4B-/
09:58 AM * JT-Shop is heading out for the day
09:58 AM Tom_dev: nice day to head into
09:58 AM Tom_dev: well it built at least
10:18 AM Tom_L: the kernel works but dunno if it's rt
10:19 AM -!- #linuxcnc mode set to +v by ChanServ
10:19 AM Tom_itx: Linux raspberrypi 5.15.65-rt49-v8+ #1 SMP PREEMPT Fri Sep 9 09:37:15 CDT 2022 aarch64 GNU/Linux
10:20 AM Tom_L: at least i know the steps work
10:56 AM t4nk_fn: argh, I need a break, relax, and tend to my burns
10:57 AM t4nk_fn: I wasn't even soldering fcol :|
12:17 PM t4nk_fn: :( those rotten chinese sellers!!! they sent me a component, DSAA
12:17 PM t4nk_fn: dead, 'shortly' after arrival ;)
12:17 PM Tom_L: it's your fault then
12:17 PM Tom_L: in your hands
12:17 PM t4nk_fn: let me write that down, before I forget :b
01:29 PM XXCoder: LOL https://www.reddit.com/r/Machinists/comments/xa2du8/ordered_this_off_etsy_for_mixed_media_use_this_is/
01:29 PM XXCoder: someone selling chips
01:35 PM roycroft: i used to give chips like that away to an artist friend
01:35 PM roycroft: they can be useful for a lot of artsy craftsy things
01:36 PM XXCoder: yeah im not surpised
01:36 PM XXCoder: still found it bit funny
01:36 PM roycroft: i hope that box did not sell for more than $5 + shipping
01:37 PM XXCoder: yeah
01:37 PM roycroft: because that plastic box costs about $2.50
01:38 PM roycroft: $1.99 if you buy it with the china smell
01:40 PM roycroft: the conditional credits for my gst3d disputes have just posted to my account
01:40 PM roycroft: and the cc issuer will review the documents i sent them within a week
01:41 PM roycroft: on the order that gst3d claim i've uderpaid and want more money i sent the order notice form gst3d that says "order cancelled - refund to mastercard"
01:43 PM XXCoder: finally starting to get it back. nice
01:49 PM unterhaus_: I wonder if that etsy seller intentionally messes up their feeds and speeds to get long chips
01:49 PM unterhaus_: interesting business plan
01:50 PM roycroft: i don't then there's any real profit in selling ferrous metal chips
01:50 PM roycroft: i think it's mostly cost recovery there
01:51 PM roycroft: the non-ferrous chips on etsy are outrageously priced, though
01:51 PM roycroft: if people actually pay those prices, i could see making copper/brass chips as a profit center
01:54 PM roycroft: https://www.etsy.com/listing/795462085/copper-metal-shavings-glimmer-shiney
01:54 PM roycroft: no, thanks on that
01:55 PM roycroft: https://www.etsy.com/listing/220879379/
01:55 PM roycroft: nor that
01:57 PM roycroft: although if people get outrageous prices for their orgons, maybe the price is justified
01:57 PM XXCoder: 80 usd for pound of copper price
01:57 PM XXCoder: unterhaus_: for lathes long chips means its dialed in too well lol. adjust feed etc to break chips some more
01:57 PM roycroft: that's 3#, actually
01:58 PM roycroft: but still about 4x what it should cost
01:58 PM XXCoder: brass one 3 lb for 40 usd
01:58 PM roycroft: and orgones are not that expensive on etsy
01:58 PM XXCoder: if shipping is free it might be shipping cost
01:59 PM roycroft: granted, one can make a *lot* of orgones with a pound of chips
01:59 PM unterhaus_: it's hard to make a long brass chip though, isn't it?
01:59 PM roycroft: not necessarily
01:59 PM roycroft: especially if it's annealed, and is cutting well
01:59 PM unterhaus_: I'm doing it wrong then
01:59 PM unterhaus_: I have no idea what condition the brass I have is, probably not annealed
02:00 PM unterhaus_: all scavenged from scrap
02:00 PM roycroft: anneal some and try turning it
02:00 PM unterhaus_: I'm good
02:00 PM unterhaus_: finish turns out okay, I just have to be careful about it getting in my eyes
02:01 PM unterhaus_: been a long time since I have seen the word orgone
02:01 PM unterhaus_: back away slowly
02:01 PM unterhaus_: Wilhelm Reich represent
02:02 PM unterhaus_: do they sell orgone boxes on etsy?
02:03 PM roycroft: yes
02:03 PM roycroft: well, orgone pyramids
02:03 PM unterhaus_: I didn't realize there was a stone named that. Really messes up the search results
02:03 PM roycroft: you need those metal chips to capture the energy
02:04 PM * roycroft has no problem with new-agey stuff if it means profit for him
02:05 PM unterhaus_: I always wanted to make an orgone box. Reich's were big enough to sit in
02:05 PM roycroft: i have a realy hard time typing "orgone"
02:06 PM roycroft: it keeps coming out "oregon"
02:06 PM XXCoder: those "astral energy" crystal stuff?
02:06 PM XXCoder: always wanted to use epoxy stuff to make some chips art though only for art fun, not because im a beliver
02:08 PM unterhaus_: epoxy is expensive though
02:09 PM CloudEvil: Yes, if you're doing epoxy rivers.
02:10 PM CloudEvil: No, if you're doing jewelery
02:16 PM roycroft: if you're making river tables, 1. i despise you and your efforts to support such a horrible fad, and 2. you're getting five figures for your tables, so the cost of the epoxy is justified
02:21 PM XXCoder: never saw appeal of river tables lol
02:21 PM unterhaus_: river tables are overdone. But I have a slab that would be perfect for it
02:21 PM unterhaus_: it has a healed up section from where there was a crotch in the tree that needs to be filled
02:22 PM unterhaus_: It was from a big walnut. This section is split for almost 8 feet
02:23 PM unterhaus_: Thinking about laying in some curly maple, just to be different
02:23 PM roycroft: a wood inlay would be fine in something like that
02:23 PM roycroft: epoxy is fine as an adhesive
02:23 PM XXCoder: if you have cnc you could do inlay in fun shapes
02:23 PM unterhaus_: every time I think nobody should make a river table, I see one I really like.
02:24 PM roycroft: and acceptable for protecting thigns like bar tops
02:24 PM unterhaus_: and then I see 37 I don't like
02:24 PM roycroft: the only river table i have ever liked is the one that matt estlea made
02:24 PM roycroft: because his is a spoof on river tables, and has an actual river running through it
02:25 PM roycroft: https://www.youtube.com/watch?v=FsistC0dqjc
02:25 PM XXCoder: i think I know that one
02:25 PM XXCoder: yuo
02:25 PM XXCoder: *yup
02:27 PM justache is now known as justJingo
02:27 PM roycroft: i finally got my marking knife from matt, btw
02:27 PM roycroft: it's really nice
02:27 PM roycroft: bog oak handle, and the ferrule is bronze
02:29 PM roguish[m]: for you rPi guys............... https://www.aaeon.com/en/p/subcompact-boards-gene-adp6/
02:34 PM Tom_L: are they afraid to put a price on it?
02:42 PM XXCoder: Tom_L: if I see no price I assume I cant afford it anf move on
02:51 PM unterhaus_: does feral engineer hang out here?
02:51 PM unterhaus_: he mentioned https://www.amazon.com/Windows-Celeron-Processor-Gigabit-Ethernet/dp/B0899N2L6T?th=1
02:51 PM unterhaus_: curious about latency
02:52 PM Tom_L: not that i'm aware of
02:54 PM unterhaus_: too bad they don't sell it without a ssd
02:54 PM unterhaus_: probably save $5
02:59 PM cradek: lallyn
03:04 PM Tom_L: wonder if i can figure out how to cross compile linuxcnc for the rpi4 now so i can test the latency on this kernel
03:05 PM Tom_L: i doubt it's very good since it doesn't look to be preempt-rt
03:05 PM roycroft: i did that a while back, tom_l
03:06 PM roycroft: when i realised that compiling on the rpi4 itself would likely take a couple days
03:06 PM Tom_L: still have your notes?
03:06 PM roycroft: i may - i'll check in a bit
03:06 PM Tom_L: no-docs would save alot of time...
03:07 PM Tom_L: i doubt i work on that today so when you get a chance...
03:07 PM Tom_L: thanks
03:08 PM roycroft: i did not do it on the machine i thought i did
03:08 PM roycroft: so it may take me a bit to find any notes
03:08 PM Tom_L: this would be for 64bit bullseye build
03:08 PM roycroft: but i'll look when i can - hopefully over the weekend
03:08 PM roycroft: yes
03:08 PM Tom_L: no rush for sure
03:08 PM roycroft: iirc andypugh did a 32-bit build and i wanted to do a 64-bit build
03:08 PM Tom_L: i'm just playing with this to see how far i get
03:08 PM Tom_L: right
03:08 PM Tom_L: andy's was 2.8.1
03:09 PM Tom_L: and i'm not sure if this needs to be 2.8 or 2.9
03:11 PM Tom_L: from what i can tell 2.9
03:11 PM roycroft: the sky is orange today
03:12 PM roycroft: i'm afraid the smoke is going to roll in soon and linger for a while
03:13 PM roycroft: the oakridge school district just sent all school children home because a level 2 evacuation has been declared
03:14 PM Tom_L: are you wanting a 64bit build for your rpi?
03:14 PM roycroft: it would really suck if the fire got to oakridge
03:14 PM roycroft: yes, i do want to run a 64 bit build on my rip4 that i'll be using for the cnc router
03:15 PM roycroft: it's been about a year since i worked on it
03:15 PM Tom_L: what os?
03:15 PM roycroft: i may have done the cross-compile for buster
03:15 PM roycroft: i'll know when i find the notes
03:15 PM Tom_L: this is bullseye 11
03:15 PM roycroft: that would be better
03:16 PM Tom_L: i just need to figure out if the kernel is preempt-rt
03:16 PM Tom_L: the patches came from the kernel org rt directory
03:16 PM Tom_L: but it doesn't indicate realtime
03:17 PM Tom_L: that's why i want to get lcnc built for it.. to test the latency
03:39 PM unterhaus_: I thought the uname -a you posted said it was RT?
03:40 PM unterhaus_: our 30 year old microwave just croaked
03:50 PM roycroft: i just had to step outside for a moment, and i could smell the smoke
03:50 PM roycroft: it is definitely coming in
03:52 PM roycroft: aqi is at 55 as of 50 minutes ago, so it's not too bad yet
03:52 PM roycroft: but it's 230 in oakridge, and that's where the wind is coming from
03:57 PM andypugh: My lock design: https://youtu.be/xhtSu1dA5aY
04:02 PM JT-Cave: hmm just burned the "official" linuxcnc rpi to a sd and it fails to boot...
04:05 PM andypugh: Which RPi model? You might have to limit memory to 3GB in the config file.
04:06 PM andypugh: I do intend to create an official 64-bit one. But I have too much on (and I am not particularly focussed either at the moment)
04:07 PM JT-Shop: rpi4 with 4GB IIRC
04:07 PM JT-Shop: there ain't many rpi's out there at the moment so low on the totem pole I suspect
04:07 PM roycroft: that's what i have
04:08 PM roycroft: and i cross-compiled a 64-bit kernel for it a year or so ago
04:08 PM roycroft: i don't recall if i ever got to the point of building linuxcnc for it
04:08 PM JT-Shop: I'll putz with it in the morning, just got back from a really nice ride
04:09 PM JT-Shop: gotta put a chicken screen in the old coop...
04:11 PM JT-Shop: hmm that's a catch 22 can't boot up so can't get to raspi-config...
04:15 PM andypugh: JT-Shop: You can edit the config file on the SD card on your PC.
04:26 PM JT-Shop: ok, I'll look in the morning
04:28 PM JT-Shop: ah I see the instructions now to edit the config-rt.txt file
04:33 PM Tom_L: JT-Shop, which image did you burn?
04:33 PM Tom_L: the 2.8.1 one ?
04:33 PM CaptHindsight: matrix and discord bridges are down
04:34 PM Tom_L: yeah, JT-Shop just put the SD in your pc and edit it
04:35 PM CaptHindsight: andypugh why bother with the Rpi4's anymore, we can't get them, why not support some readily available arm64 boards with the same Rpi headers?
04:36 PM CaptHindsight: https://www.96rocks.com/blog/2020/10/21/rockchip-rk3566-highlights/
04:36 PM CaptHindsight: https://pine64.com/product/quartz64-model-b-4gb-single-board-computer/ ~$60 in stock
04:37 PM CaptHindsight: https://libre.computer/products/s905x/
04:37 PM Tom_L: JT-Shop, this last bullseye didn't have the config-rt.txt just the config.txt
04:37 PM Tom_L: one just points to the other though
04:47 PM JT-Shop: http://www.linuxcnc.org/iso/linuxcnc-2.8.1-pi4.zip
04:50 PM Tom_L: right
04:50 PM Tom_L: just making sure you hadn't discovered another
04:50 PM Tom_L: i think someone on the forum did a more recent one but i could be mistaken
04:59 PM JT-Shop: just trying to get something going quick so I can test mesact on the rpi
04:59 PM Tom_L: i have that image if you can't get the 'official' one to work
05:00 PM Tom_L: i'm not even sure which os it was
05:00 PM Tom_L: maybe stretch
05:01 PM Tom_L: i should grab a few more SD cards
05:01 PM JT-Shop: is the image what I need to burn to the sd card with dd?
05:02 PM Tom_L: pretty sure you can
05:02 PM Tom_L: back then i used the one from rpi
05:03 PM Tom_L: i do have a buster one if you want but it's on a larger SD and if i image it, it's gonna be a large file
05:04 PM Tom_L: and it's got my stuff on it
05:04 PM JT-Shop: let me see what I can do with either the lcnc one or just build one
05:04 PM Tom_L: ok
05:04 PM Tom_L: if i can get lcnc compiled i'll have a bullseye one but i'm not sure about the kernel yet
05:09 PM Tom_L: buster would probably be the easiest
05:36 PM mrec: does anyone know how to synchronize a spindle with a 4th axis (A)?
05:37 PM mrec: does this really need an extra module?
05:37 PM mrec: eg. https://forum.linuxcnc.org/10-advanced-configuration/31639-gear-hobbing-maschine-electronic-gearing#180558
05:37 PM Tom_L: if anybody would, andy would
05:39 PM mrec: finally I have an encoder on the old spindle
05:39 PM JT-Shop: yep
05:39 PM Tom_L: i've done A-axis sync with another axis but not with the spindle
05:40 PM Tom_L: but that was more a function of the gcode output
05:41 PM Tom_L: can't get master to build on the rpi
05:41 PM Tom_L: or 2.8 for that matter
05:42 PM Tom_L: missing glib
05:43 PM -!- #linuxcnc mode set to +v by ChanServ
05:43 PM Tom_dev: checking for glib... configure: error: no -- required until somebody makes glib optional
05:44 PM * JT-Shop calls it a day
05:45 PM Tom_L: good call
05:45 PM mrec: Andy is using G95 it seems
05:46 PM Tom_L: you'd have to calculate the movement
05:47 PM mrec: but there's no A Axis in it
05:58 PM mrec: Andy seems to be a wizard
05:59 PM XXCoder: seems to be?
05:59 PM mrec: https://i.snipboard.io/UFqtmS.jpg
05:59 PM XXCoder: he IS wizard
05:59 PM mrec: he knows the answers years before the questions come up
05:59 PM mrec: even better he answers them years before
06:00 PM mrec: the questions were like 4 years ago / 7 years ago... Andy answers them 9 years ago
06:01 PM mrec: so in one of the hal files he wired up the 4th axis with the encoder of the spindle
06:01 PM mrec: smart... okay got the point now time to sleep
06:54 PM XXCoder: andypugh: https://media.discordapp.net/attachments/763323422746345472/1017946003116142613/unknown.png
06:54 PM XXCoder: ;)
07:01 PM andypugh: I do sometimes wonder if I was the first to do electronic hob gearing. It seems unlikely. I might have been the first to admit how trivial it is. To the extent that there really is no reason to mechanically gear a hobbing machine.
07:02 PM XXCoder: andy that picture was generated and yeah weird result
07:03 PM XXCoder: prompt was "andy pugh the computer wizard near huge servers and cnc machine"
08:37 PM Tom_L: JT-Shop, i've got a good buster install but it's 2.8.0
08:37 PM Tom_L: also have the 2.8.1.. testing it now
09:23 PM roycroft: well the emergency alert system just interrupted the radio
09:23 PM XXCoder: roy its starting to get smokey here
09:24 PM roycroft: oakridge/westfir just went into a level 3 fire alert
09:24 PM XXCoder: I can see it, but dunno how bad it is as I cant smell
09:24 PM roycroft: which means evacuate immediately
09:24 PM roycroft: i can smell it slightly here
09:24 PM XXCoder: your region included?
09:24 PM roycroft: no, oakridge is southeast of here about 80km
09:24 PM XXCoder: 118 here
09:24 PM roycroft: but it's a decent size community
09:25 PM XXCoder: "unhealthy for sensive groups" thats me unfortately
09:25 PM roycroft: it's quite dark here
09:25 PM roycroft: more like 9:00 than 7:25
09:25 PM XXCoder: no wonder I was breathing harder than usua;
09:25 PM XXCoder: geez
09:25 PM roycroft: aqi is 70 here now
09:25 PM roycroft: and going up
09:26 PM roycroft: it will be in the unhealthy range by tonight
09:26 PM XXCoder: sucks
09:26 PM roycroft: i can't remember oakridge ever having to evacuate before
09:26 PM XXCoder: here dont think we ever had to, but we often are under heat dome
09:27 PM XXCoder: so smoke can get very bad. like 3 years ago wow
09:27 PM roycroft: yes, we may get an inversion happening once the smoke rolls in
09:28 PM XXCoder: I might have to make smoke filter thing again
09:28 PM XXCoder: it uses 2 house filters and box fan, and some cardboard
09:31 PM roycroft: the only saving grace should the smoke come in is that it's well into september now, and there will almost certainly be rain within a couple weeks
09:31 PM roycroft: so it's highly unlikely that we'll get a prolonged period of smoke, like we often do with july and august fires
09:31 PM XXCoder: true
09:33 PM roycroft: the forecast now calls for the wind to shift to northerly, so perhaps we won't get the smoke tonight or tomorrow after all
09:33 PM roycroft: and the high on sunday was forecast to be 38, but now it's 30
09:33 PM roycroft: that is *way* better
09:39 PM XXCoder: nice
09:40 PM XXCoder: here tomorrow might be 92f ow
09:49 PM Tom_L: ok i found a buster img file with 2.8.0 on it
09:50 PM Tom_L: when upgraded lcnc 2.8.3
09:50 PM Tom_L: not 64bit though
10:45 PM -!- #linuxcnc mode set to +v by ChanServ