#linuxcnc Logs
Nov 03 2020
#linuxcnc Calendar
06:09 AM Tom_L: skunkworks, too much cruft to bother yesterday
06:15 AM Tom_L: there you go
06:30 AM Tom_L: veegee, https://www.grainger.com/product/CHIEF-11-1-in-x-3-92-in-x-3-1-in-35LP40
07:03 AM -!- #linuxcnc mode set to +v by ChanServ
08:08 AM -!- #linuxcnc mode set to +v by ChanServ
08:12 AM -!- #linuxcnc mode set to +v by ChanServ
08:49 AM Tom_L: may take a while for the index to cycle
08:51 AM Tom_L: skunkworks, you should talk him into joining :)
08:54 AM Tom_L: skunkworks, are you familiar with how the analog out ENA /ENA work?
08:54 AM Tom_L: wondering: if i need a low to enable i tie /ENA and use ENA as the signal?
08:54 AM Tom_L: and vise versa for a positive ENA?
08:55 AM Tom_L: i think it's just an open ended opto out
08:55 AM Tom_L: so you can use either - or + depending on the need
08:55 AM Tom_L: tying the other end to the rail
09:48 AM roycroft: looks like the internet broke
09:51 AM flyback: BMCC
10:04 AM Loetmichel: roycroft: to translate qoute germanbash: "What was that?" "A Netsplit caused by a pulled ethernet cable." "How do you know?" "I have it (the end) in my hand."
10:22 AM -!- #linuxcnc mode set to +v by ChanServ
10:22 AM -!- #linuxcnc mode set to +v by ChanServ
11:45 AM Tom_L: man, looking at my hal file, i sure had alot of spindle code manipulation going on
11:46 AM Tom_L: this round should be alot simpler
11:46 AM gregcnc: how fast will that setup rigid tap?
11:46 AM Tom_L: i'm not sure
11:47 AM Tom_L: there _is_ somewhat of a pause going from fwd to rev
11:47 AM Tom_L: i'll have to test it
11:47 AM Tom_L: there may be drive parameters i could adjust but i'd rather not right away
11:48 AM Tom_L: i did ask china for a better manual for it and haven't heard back yet
11:57 AM Tom_L: if we could source the motor i'm sure that combination can be gotten cheaper
12:01 PM Tom_itx: gregcnc, https://www.alibaba.com/product-detail/310V-1-2kw-electric-motor-1200w_60737993181.html?spm=a2700.7724857.videoBannerStyleB_top.9.32c7751dTHUvzS
12:12 PM skunkworks: Tom_L: what is the part number on the drive?
12:13 PM Tom_L: doesn't have one
12:13 PM Tom_L: that i can see
12:14 PM skunkworks: The ones I got with the green machine looked similar.
12:15 PM Tom_L: all i see is SD07090151
12:15 PM skunkworks: (make sure they are instantly reversable.. mine are not. Bang!)
12:15 PM Tom_L: they say to stop it first
12:16 PM Tom_L: i reversed it at low speed ok
12:16 PM skunkworks: ok. yes - make sure you don't switch direction while running a decent clip
12:17 PM roycroft: does anyone know about modern pc hardware?
12:17 PM Tom_L: i'm not as concerned about tapping as having the bottom end torque
12:17 PM roycroft: i'm looking for a wifi card for my linuxcnc machine
12:17 PM roycroft: https://www.amazon.com/Network-7260HMW-Wireless-AC-Adapter-Express/dp/B07WWF2GS8/
12:17 PM roycroft: and i wonder if that would work decently
12:17 PM Tom_L: skunkworks, i could rig up a pulse to the brake before reversing
12:17 PM roycroft: i don't have a clue about network adapter chipsets these days
12:17 PM Tom_L: i had to do that on the sherline control since it was FWD only
12:17 PM skunkworks: that is exacty what I did - hey - there is a reverse pin.. Slow rpm worked - lets try full speed. Bang!
12:18 PM Tom_L: thanks for the heads up
12:18 PM Tom_L: i'm not sure a pulse to brake would be enough either
12:18 PM Tom_L: yours is the 750w model?
12:19 PM Tom_L: the limited instructions i did get warned about that
12:20 PM skunkworks: I don't remember - the drives might have been a bit more than the servo..
12:20 PM skunkworks: Mine did too... :)
12:20 PM Tom_L: this driver is 1500w
12:21 PM Tom_L: chinaco watts
12:21 PM Tom_L: did yours have the analog in?
12:21 PM Tom_L: i just thought it would be nice to figure out the modbus. it looks like it's all there
12:22 PM Tom_L: (i did take a peek inside)
12:29 PM * Tom_L smiles at skunkworks's dad :)
12:34 PM jymmmm: HD SCREEN (7seg LED)
12:34 PM roycroft: is that the expurgated log, with all of last night's discussion removed?
12:34 PM Tom_L: nothing was removed
12:34 PM Tom_L: it wasn't present
12:35 PM jymmmm: ut a few things were added for flavor
12:35 PM jymmmm: but*
12:37 PM skunkworks: Tom_L: pretty sure mine didn't have modbus.. So yours are a bunch newer
12:37 PM skunkworks: It had pwm in iirc
12:37 PM Tom_L: this does pwm and analog in
12:37 PM Tom_L: the RJ45 looks wired but no instructions for it
12:39 PM Tom_L: skunkworks, did you wire yours directly to the mesa card? no signal isolation ?
12:47 PM gregcnc: those drives must not be very robust if they blow on reverse. or they need something to dump the regen voltage
12:50 PM gregcnc: I wonder if they are clone of something
12:50 PM Tom_L: could be
12:54 PM gregcnc: I'm thinking about changing my mill to servos and looked at some drives on ebay
12:56 PM skunkworks: Tom_L: umm... I think I just hooked it in.. but it has been a while.
12:57 PM gregcnc: is a lot of the chinaco motion control stuff gone from ebay and amazon?
01:01 PM Tom_L: skunkworks, i looked at the mesa, it's all isolated
01:01 PM Tom_L: that's what i was wondering
01:02 PM Tom_L: gregcnc, definitely not as much
01:06 PM gregcnc: part of it must be the absolutely horrific amazon search
01:10 PM roycroft: i've seen a lot less east asian imported goods available over the past few months
01:10 PM roycroft: i attribute to effects of the tariffs and the covid-19 pandemic
01:15 PM skunkworks: hm - I bet I was hooking it through the leadshine stepper drive..
01:15 PM skunkworks: so - isolated
01:59 PM unterhaus_: I haven't noticed a particular drop in the availability of chinese goods.
01:59 PM unterhaus_: they are 100% back to normal I think
02:15 PM jymmmm: Does anyone know of a dead simple low amperage disconnect circuit?
02:24 PM jesseg: jymmmm, perhaps, but what voltage, etc?
02:25 PM jesseg: and what do you mean? Does it disconnect on low amperage? Or is it a disconnect switch for light loads?
02:37 PM CaptHindsight: jymmmm: dramatic pauses should only be for a minute at most
02:37 PM jymmmm: Disconnet charger when battery is full
02:46 PM veegee: hmm variable displacement piston pumps are constant power right?
02:47 PM veegee: At low pressure, you have max stroke. At high pressure, you have a small stroke
02:48 PM veegee: I love constant power mechanisms like CVT and such. Just trying to find the hydraulic equivalent
02:51 PM Tom_L: veegee, you get that grainger link?
02:52 PM Tom_L: quad equlizer
02:52 PM veegee: Tom_L yeah I did
02:52 PM veegee: That's actually a reasonable price
02:52 PM veegee: Which is rare for grainger lol
02:53 PM veegee: roycroft stay away from realtek
02:53 PM veegee: roycroft intel card have excellent Linux support. Realtek is trash. I deal with this stuff every day
02:55 PM veegee: So yeah that 3,000 PSI 4 port divider/combiner is perfect for what I need to do. Flow is a little low, but I can live with that
02:55 PM CaptHindsight: Pressure setting of variable displacement pump https://www.youtube.com/watch?v=91eb8FMCnQ4
02:57 PM veegee: 5GPM to fill four 3" x 48" cylinders is a little over a minute. Not bad, I can live with that
02:58 PM veegee: Had to convert to sane person units to do the math. Fucking americans
02:58 PM veegee: CaptHindsight yeah I know how the pressure compensator swash plate mechanism works
02:58 PM veegee: I'm just wondering if that works out to effectively constant power
02:58 PM veegee: or at the very least constant torque
02:59 PM veegee: within its operating range, that is
02:59 PM CaptHindsight: ok smarty pants
02:59 PM veegee: the torque should then be the same at just under maximum stroke, all the way up to just under minimum stroke if I'm thinking about this correctly
03:00 PM roycroft: wow
03:00 PM CaptHindsight: when your brain cools down after "all that math" I'll post another video to explain
03:00 PM roycroft: my linucnc machine is running debian 8.4
03:00 PM roycroft: it's been a while since i did that install
03:00 PM veegee: freedumb unit math is the hardest on my brain
03:01 PM veegee: how many cubic inches in a gallon!? aaaaaaaaaaaaaaaaah
03:01 PM CaptHindsight: Spanish Gallon?
03:02 PM roycroft: and linuxcnc does not recognise my touch screen
03:02 PM roycroft: that's what i was concerned about
03:02 PM veegee: what distro is it based on?
03:02 PM roycroft: now i have to figure out again how to make it work
03:02 PM veegee: And is the touch screen part USB based?
03:02 PM roycroft: yes, it's usb based
03:02 PM roycroft: 2.7.6, i think
03:02 PM roycroft: and i had it working back when i installed it
03:02 PM veegee: damn that's an old kernel
03:02 PM roycroft: it's an elo touchscreen
03:03 PM roycroft: that's the linuxcnc version, not the debian version
03:03 PM CaptHindsight: does lsusb find it?
03:03 PM roycroft: it's debian 8.4
03:03 PM veegee: oh
03:03 PM roycroft: whatever kernel that is
03:03 PM roycroft: i didn't get that far
03:03 PM roycroft: i just walked away
03:03 PM roycroft: i had to find a vga cable to set it up, and that burne dup most of my lunch break
03:04 PM roycroft: i actually stretched my luch by a few minutes because i wanted to at least boot the machine up to make sure it still works
03:04 PM CaptHindsight: i sorted out my cables, now it takes longer to find one
03:04 PM roycroft: i'll probably not bother trying to get the touch screen working with this configuration
03:04 PM roycroft: i'll just do the debian 10/linuxcnc 2.8 install and then work on the touch screen
03:05 PM CaptHindsight: roycroft: are you going to change LCNC versions and or kernels?
03:05 PM roycroft: yes, both
03:05 PM roycroft: i'm going to do a fresh install
03:05 PM roycroft: i just wanted to boot this up to see if what i did before was still working
03:05 PM CaptHindsight: then don't worry about why 8.4 doesn't work
03:05 PM roycroft: and other than the touch screen it was
03:05 PM roycroft: right
03:05 PM roycroft: i'm thinking i have a utility that i have to run before the touchscreen works
03:06 PM * roycroft logs into his documentation machine and looks for a changelog
03:07 PM roycroft: apt-get install xserver-xorg-input-mutouch
03:07 PM roycroft: apt-get install xinput-calibrator
03:07 PM roycroft: and then the linuxcnc install stuff
03:07 PM roycroft: no notes after that
03:07 PM roycroft: but i remember using touchy in simulation mode before
03:07 PM roycroft: it was january 2017 when i did this
03:07 PM roycroft: not quite as long ago as i thought
03:08 PM roycroft: and installing a pre-empt kernel was fun back then
03:08 PM roycroft: today it's trivial
03:10 PM roycroft: i have to go pick up a barrel after work today, and then it will be time for election returns
03:11 PM roycroft: but i might just listen to the election news on the radio, and work on the linuxcnc machine
03:11 PM roycroft: that would be a good way to pass the time
03:13 PM CaptHindsight: almost 70F (21C) today
03:15 PM roycroft: trump just said that he doesn't have an acceptance speech or a concession speech, and hopes he only has to give one
03:15 PM roycroft: i'm trying to fathom in which universe one might have to give both
03:16 PM roycroft: and i won't comment further on the election this afternoon :)
03:17 PM CaptHindsight: crazy shit statement from tRUMP #23,547
03:18 PM veegee: CaptHindsight second video people
03:18 PM veegee: please*
03:18 PM veegee: damn those freedumb units really messed with my head
03:19 PM CaptHindsight: I'll have it about 2 furlongs
03:19 PM roycroft: i don't think that's what messed with your head
03:19 PM veegee: that's a measure of linear distance
03:19 PM roycroft: i think your momma dropped you when you were a baby
03:20 PM CaptHindsight: have you noticed how the French have a different word for just about everything? Units are similar
03:20 PM veegee: No, my mom took amazing care of me
03:20 PM veegee: but I do have brain damage from other events
03:20 PM roycroft: they do not like foreign words
03:20 PM roycroft: they have an entire academy dedicated to maintaining the purity of the language
03:28 PM Deejay: gn8
03:39 PM jymmmm: I'm back, excuse the delay
03:45 PM justanotheruser is now known as mrdulus
03:47 PM mrdulus is now known as justan0theruser
04:29 PM _unreal_: no excuses
05:38 PM jesseg: jymmmm, a 12v sla/fla battery?
05:41 PM JT-Cave: https://gnipsel.com/images/chickens/cinnamon-queens/11-03-20-01.jpg
05:42 PM jesseg: hahaha that's cool. is it IR?
05:42 PM jesseg: JT-Cave, that looks like snow in the box. Is it like sand so the droppings can dry and be scooped out with a kitty litter scooper?
05:43 PM JT-Cave: yea, just added the bit on the left to give them a longer perch
05:43 PM JT-Cave: Sweet PDZ a horse stall refresher
05:43 PM jesseg: And what's that black grated surface under the perch pan?
05:43 PM JT-Cave: kitty litter scoop and a drawer organizer to clean
05:44 PM JT-Cave: carpet runner, that's the nest box, I lift the lid to collect the eggs
05:44 PM jesseg: gotcha
05:45 PM jesseg: Are you gonna make an automated mechanism that very slowly sifts the sand and conveyor's out the chunks to a compost pile?
05:45 PM jesseg: In USA chamomile grows GREAT in that stuff.
05:46 PM jesseg: in fact I think maybe when I was a kid they had chamomile seeds in the chicken food because when we moved the chickens to a new pen the old one totally carpeted in the happiest chamomile crop you ever saw
05:47 PM JT-Cave: It is made of premium grade clinoptilolite, better known as zeolite.
05:48 PM JT-Cave: interesting
05:48 PM jesseg: a massive surface area product? :P
05:49 PM JT-Cave: https://sweetpdz.com/
05:51 PM JT-Cave: https://gnipsel.com/images/chickens/12x16-coop/accoutrements/tools-04.jpg
05:51 PM JT-Cave: yea that's a Japanese rake I made for the PDZ
05:56 PM jesseg: Those are some pretty spoilt hens. What day does the hen hair dresser come for them each week? or is that a feather dresser? :D
06:35 PM CaptHindsight: https://imgur.com/gallery/uVPS3B6
06:35 PM CaptHindsight: roycroft: ^^
06:39 PM jesseg: Is that pretty stout? Seems there's going to be some severe cantilever forces on those bearings -- or is there a large powerful sliding axis that we can't see which supports all of those forces?
06:50 PM jymmmm: jesseg: doesn't matter
06:53 PM jymmmm: jesseg: LiFe
06:53 PM jymmmm: JT forcept for broken blood feahters?
07:01 PM jesseg: jymmmm, so like 12v range or 144v range?
07:02 PM jesseg: jymmmm, Does it need to automatically connect as well when the battery is low and reconnected, or can you press a "Start charge" button to start it, then it can just click off when it's done
07:09 PM jesseg: For LiFe, full is considered first charging at constant current, then constant voltage until the current being drawn drops to like one tenth of an amp per amp hour rated capacity
07:11 PM jesseg: What are you using for a power supply?
07:11 PM jesseg: and does the battery pack have built in BMS?
07:13 PM jesseg: Is it a regulated power supply, or?
07:17 PM CaptHindsight: jesseg: dunno, can't see if they use the screws as linear supports of if there are linear bearings out of view
07:25 PM CaptHindsight: heh, I've now skimmed through several videos of that bench and they show the underside :(
07:25 PM CaptHindsight: + never show
07:39 PM jesseg: figures :P
07:39 PM jesseg: there's a lot of stuff out there just to garner views from people who will never build
08:23 PM Tom_L: ok, config file mostly rewritten
09:14 PM unterhaus_: If I had one of those benches, I would just move the face vise in and out and watch the gears
09:14 PM unterhaus_: and never get anything done
09:14 PM unterhaus_: Of course, I never get anything done anyway
09:14 PM unterhaus_: I like Roycroft's wagon vise better though
09:15 PM unterhaus_: if they aren't using the screws for support, that's a lot of space wasted on a face vise
09:15 PM unterhaus_: it would be okay on an end vise if it is stout enough to avoid racking
09:20 PM roycroft: my wagon vise is awesome
09:20 PM roycroft: i love my leg vise too
09:23 PM roycroft: i honestly could not be happier with how my bench turned out
09:24 PM roycroft: i was pretty sure i made the right design choices, and i'm convinced that i did
09:51 PM jesseg: Heard about the guy who put AAA batteries in the wad instead of fishing sinkers?
09:51 PM jesseg: The next home intruder got a real charge, and the homeowner got charged with assault with battery
09:52 PM jesseg: is that a charged joke or what?
09:53 PM veegee: CaptHindsight https://www.kijiji.ca/v-view-details.html?adId=1520842646
09:53 PM veegee: consider it sold lol
09:54 PM jesseg: Electric battery operated forklift. Requires new charger or new battery.
09:54 PM veegee: for $1,500? that's a steal
09:54 PM jesseg: Or, I might add, just a long extension cord.
09:54 PM veegee: exactly
09:54 PM jesseg: who needs a battery if you have a long cord? :P
09:54 PM veegee: well I already have a 10kWh LiFePO4 battery pack
09:54 PM veegee: just need more counterweights, but I have that too
09:55 PM jesseg: hahahaha so you're having a house party and you're like "Hey guys, check out my tesla here..."
10:16 PM Thorhian: Lol a forklift would be cool.
10:16 PM Thorhian: I made my first real steel chips on my mill. So far so good seeing as my spindle motor is mounted with a 3D printed part lol
10:19 PM jesseg: Congratulations Thorhian !
10:20 PM Thorhian: Thanks jesseg! Ill have to finish the part later though. I accidentally pushed it too hard and the vibrations loosened the Z motor coupler, and the Z axis started dropping lol.Thankfully I stopped it in time lol
10:20 PM Thorhian: It's a plate to replace the 3D printed spindle motor mount lol.
10:21 PM Thorhian: Next will be the Z Motor mount lol. That was just bad design...
10:42 PM roycroft: well i hope this doesn't turn out to be a problem
10:42 PM roycroft: debian 8 likes my keyboard
10:42 PM roycroft: but the debian 10 installer does not see it
10:43 PM roycroft: hopefully the installed os will see it
10:59 PM roycroft: and it does, so yay
11:08 PM CaptHindsight: \o/
11:09 PM roycroft: i'm actually being productive, and installing linuxcnc machine tonight
11:10 PM CaptHindsight: I'm doing car body work
11:10 PM CaptHindsight: er eh meant sanding and sanding
11:14 PM roycroft: eew
11:14 PM roycroft: i hate doing that stuff
11:14 PM roycroft: i don't mind sanding wood
11:14 PM roycroft: but i hate sanding metal and fiberglass
11:33 PM veegee: I don't know why, but food today seems to have much more intense flavour
11:33 PM veegee: one of those weird days
11:34 PM CaptHindsight: maybe you are coming down with a cold
11:41 PM roycroft: it's looking like we won't know who won the presidential race for several days
11:41 PM roycroft: which is pretty much what i expected
11:42 PM roycroft: i think i have a linuxcnc install - i'll go check it in a minute
11:43 PM roycroft: it's too late for me to want to sort out the touch screen tonight though
11:43 PM roycroft: that can wait for the morrow
11:53 PM roycroft: well, it loaded fine
11:53 PM roycroft: gmocappy started up fine
11:53 PM roycroft: and the touch screen now works
11:53 PM roycroft: although it needs to be calibratee