#linuxcnc Logs

Jan 11 2021

#linuxcnc Calendar

12:00 AM Juzzy: I'm assuming you changed the breaker out (20a?)
12:07 AM Juzzy: I had a craftman oilfree that did the same thing, it was on a long haul at the very end
12:07 AM Juzzy: even though it was 12ga wire, it was prob 100ft long and about 6 gfi plugs on it. not sure if somewhere had a weak connection, or what. did a direct shot 12ga 50ft ext cord to test it, no problem at all
12:08 AM Juzzy: Still did it. Replaced the motor, still did it. I had -just- installed a Sense energry monitor, so I opened it up and started it, the Mw would run, straight platue and then drop off. so I knew it wasnt like a ramping power problem, like a motor would do
12:09 AM Juzzy: went to the breaker box, the breaker was hot af. Swapped it with a new one, same rating. Problem solved
12:12 AM roycroft: i've not changed the breaker yet
12:12 AM roycroft: that's the next stop
12:12 AM Juzzy: touch it. if its warm, swap it
12:12 AM roycroft: i did upgrade the wiring from 12ga to 10ga
12:13 AM roycroft: even though it's a really short run
12:13 AM roycroft: the breaker is not hot
12:20 AM roycroft: or even warm
12:20 AM Juzzy: got an amp clamp?
12:20 AM roycroft: i do, but no easy way to clamp it around a leg of the power
12:20 AM Juzzy: do it in the box, on the breaker
12:20 AM Juzzy: its 110v?
12:20 AM roycroft: no, it's 240v
12:20 AM Juzzy: ahhhh
12:20 AM Juzzy: you can still do it there
12:20 AM roycroft: it doesn't happen all the time
12:20 AM Juzzy: do one, let it trip, wait 5 mins to resent temps, do the other, let it trip
12:20 AM roycroft: sometimes the compressor will work for days before it trips
12:20 AM Juzzy: even at like resuming 120+ psi?
12:20 AM Juzzy: you may have a legit short in the windings or something
12:20 AM roycroft: sometimes i can cycle it almost continuously and it will go for days
12:20 AM roycroft: sometimes it will trip 3 times in a day
12:20 AM Juzzy: and amp meter will tell you
12:20 AM roycroft: but mostly it lasts for quite a while
12:20 AM Juzzy: ah.
12:20 AM roycroft: which is why i've put up with it for a long time
12:20 AM Juzzy: yea makes it tough for sure
12:20 AM roycroft: and why i'm not totally focused on fixing the problem
12:20 AM roycroft: i do one thing
12:20 AM roycroft: see how it goes
12:20 AM roycroft: then do another
12:20 AM Juzzy: get yourself a power meter, 1 they are handy as hell, and 2, makes stuff like this easy peasy
12:20 AM roycroft: if i'm honest, i probably would not worry about it at all except the compressor is on the same circuit as my belt grinder, which is out in my fabrication shop
12:20 AM roycroft: the two never run at the same time
01:09 AM Juzzy: XXCoder: I got the JOINTS linked using HOME_SEQUENCE -2 on both. But they both move in the same direction still. Any idea how to make one inverse of the other?
01:09 AM XXCoder: yeah theres setting on inversing direction forgot what it is
01:10 AM XXCoder: though since its stepper all you need to do is flip connector for one
01:10 AM XXCoder: if its noit keyed anyway
01:10 AM Juzzy: oh wait there's a checkbox in the wizard, but i'll lose my config if i reopen it
01:10 AM XXCoder: yeah look in file
01:10 AM Juzzy: not sure i can flip DIR, since high send 5v and low is 0
01:11 AM XXCoder: and direction is on axis not joint. you need to set joint direction not axis directuon
01:11 AM XXCoder: nah not DIR
01:11 AM XXCoder: that 4 wires for stepper, flip over the wires
01:11 AM XXCoder: that should inbverse direction of stepper
01:12 AM Juzzy: oh on the motor side
01:12 AM XXCoder: yeah though im sure theres direction setting in HAL also, for joints. but im not sure what it is
01:12 AM XXCoder: im quite rusty
01:12 AM Juzzy: so swap all + and - but keep the coils paired obvs
01:12 AM XXCoder: yeah
01:12 AM Juzzy: k
01:13 AM Juzzy: lemme check my hal first. damn so close to getting this thing put together
01:15 AM Juzzy: yea, nothing jumping out. I may just make a copy of this one, redo it and diff -r
01:15 AM XXCoder: ok
01:15 AM Juzzy: plus i need to figure out how to do limits and the wizard is probably the easiest way
01:15 AM Juzzy: though I'll have to go read the docs to understand what all the damn options mean
01:16 AM Juzzy: BOTH X, X + Home
01:16 AM XXCoder: wizard is good way to start, then you edit files and never use wizard again
01:16 AM Juzzy: etc etc
01:16 AM Juzzy: like 40 options
01:17 AM Juzzy: is best practice to slap homes on each pin and just serial all the limits together? i dont think i have enough for each one to have a limit
01:18 AM XXCoder: you could not bother with limits just homes. of course that carries a risk of making a mistake or it messing up and grinding against end
01:19 AM Juzzy: ah i have 4 inputs, ill serial them all together then
01:20 AM Deejay: moin
01:20 AM Juzzy: and just not home the clone
01:20 AM Juzzy: sup Dee
01:31 AM Juzzy: jee
01:31 AM Juzzy: setp parport.0.pin-09-out-invert 1
01:38 AM Juzzy: so i cant seem to HOME Y once i have 2 joints on it. its not even an option, then it says Can't start when not Homed
01:39 AM XXCoder: i never set homing unfortunately, my machine not having any homing lol
01:39 AM XXCoder: i manually set homes
01:40 AM Juzzy: like X and Z can home, (Set Home) but Y does nothing
01:40 AM XXCoder: you'll have to read config
01:44 AM Juzzy: i found a workaround with NO_FORCE_HOMING = 1 under TRAJ but then I have to Run a file first, then I can Jog it around
01:44 AM Juzzy: anyways, thanks for the help
01:44 AM Juzzy: off to bed for now, may can complete this puppy tomorrow
01:45 AM XXCoder: night :)
01:47 AM Loetmichel: mornin'
01:47 AM Loetmichel: Aw, maaan. I should really clean up my "projects" directory. Searching for a CAD file of an Enclosure i did about a year ago to modify it for a new DVD drive for 30 minutes now. Cant remember how i named it... :(
01:48 AM XXCoder: ouch
05:51 AM JT-Cave: morning
05:52 AM XXCoder: yo
06:00 AM net|: https://www.youtube.com/watch?v=aazprXilyxY
06:05 AM Loetmichel: *gnhihi* coworker just brought his wireless "noname" headset ... single unprotected 502035 lipo cell... 3 times the size that it should be... $me looking into the charge circuit: a single resistor... :( ... balls they have in china :(
06:06 AM sensille: "circuit"
06:06 AM Loetmichel: indeed
06:07 AM Loetmichel: i urged the coworker to buy a replacement lipo with internal protection.
06:07 AM Loetmichel: at least
06:24 AM XXCoder: dangerous.
06:27 AM ar: Loetmichel: they like producing forbidden pillows
06:30 AM Tom_L: morning
06:56 AM Loetmichel: ar: indeed
07:10 AM JT-Cave: hi ho hi ho off to collect chicken poop I go
08:25 AM Juzzy: Anyone have a couple cool carvings they could share?
09:22 AM gregcnc: limit switches should consider the possibility exceeding software limits
09:23 AM gregcnc: a step/direction machine with steppers is unlikely to ever have an axis run away
09:39 AM Juzzy: seems like a cheap and easy protection layer tho
09:39 AM gregcnc: but protection from what?
09:39 AM Juzzy: my mini would grind in the corner... like prob not the best for anything
09:40 AM gregcnc: grind what?
09:40 AM Juzzy: motor/screw noises that shouldnt be making
09:41 AM gregcnc: what does that have to do with limits though?
09:41 AM Juzzy: but 10pk is like $5
09:41 AM Juzzy: a switch would have stopped it :o
09:41 AM gregcnc: you don't home this machine?
09:42 AM Juzzy: im building a new 5'x5' one, this was my old chinese mini, i was always trying to max it out
09:42 AM Juzzy: plus newbie me, and not knowing what I was doing
09:42 AM gregcnc: you don't nee limits, every machine should have an accurate home, even if manual
09:43 AM gregcnc: if homing can't be super accurate, then you can't try to use every micron of axis travel
09:43 AM gregcnc: software limits and homing will prevent overtravel
09:44 AM Juzzy: yea makes sense
09:47 AM gregcnc: Home switches are worth the effort
10:02 AM satiowadahc: Currently heating the house by running linuxcnc runtests script
10:08 AM unterhaus: Thinking about buying one of these for soldering https://www.amazon.com/gp/product/B07YB2TNM3/ref=ox_sc_act_title_5?smid=AMC5OLX1DH3U0&psc=1
10:12 AM satiowadahc: Would be handy for inspections to
10:17 AM norias: haha
10:17 AM norias: my first machining job
10:17 AM norias: we had these old manual lathes that were converted to cnc
10:17 AM norias: by adding a slant bed to them
10:18 AM norias: and cnc controller
10:18 AM norias: so, you'd turn the chuck on by hand, etc
10:18 AM norias: and drilled with the tailstock by hand
10:18 AM norias: if you jammed that thing home fast enough, it would overshoot software limits
10:19 AM norias: smack the limit switch
10:19 AM norias: (which was like .020" past software)
10:19 AM norias: and keep going
10:19 AM norias: good times
10:20 AM Juzzy: heh
10:20 AM norias: sometimes i kinda miss that shitty job
10:21 AM norias: i ran some lathes with an anilam crusader controller
10:22 AM norias: yeah, it was the crusader II L
10:22 AM norias: https://www.google.com/imgres?imgurl=https%3A%2F%2Finstockspares.com%2Fimages%2Fstories%2Fvirtuemart%2Fproduct%2FAnilam%2520CNC%2520Control%2520CRUSADER%2520II%2520L%2520MODEL%2520154-002%2520AF%2520instockspares.com%2520cncdubai%40gmail.com%2520ships%2520today%2520(5)%2520(Copy).jpg&imgrefurl=https%3A%2F%2Finstockspares.com%2Findex.php%2Fanilam-instock-dubai-uae-samedayship-cnc-control-crusader-ii-l-model-154-002-af-detail&tbnid=6
10:22 AM norias: yEpCSTxfiGZ-M&vet=12ahUKEwiN-eWZopTuAhUKn3IEHQl8BZQQMygAegUIARDiAQ..i&docid=NM8DvIAeuH4OEM&w=907&h=680&itg=1&q=anilam%20controller%20crusader%20II&client=ubuntu&ved=2ahUKEwiN-eWZopTuAhUKn3IEHQl8BZQQMygAegUIARDiAQ
10:22 AM norias: you could see one line of g code at a time
10:29 AM roycroft: please, use a url shortener if you must post something like that
10:59 AM norias: yeah, sorry
11:17 AM roycroft: no worries - sometimes one isn't aware of how long a url is before pasting it
11:17 AM roycroft: long urls should be banned anyway :)
11:18 AM roycroft: but this is google
11:18 AM roycroft: they have to glean as much metadata as they can so they can update their dossiers on people
11:19 AM gregcnc: depends where you copy from and if you look at your paste before hitting enter
11:22 AM roycroft: yeah
11:22 AM roycroft: most folks don't look at their urls before they paste
11:22 AM roycroft: most of the time you can truncate them and they still work
11:23 AM roycroft: just cut everything after the / before the ?=, in many cases
11:24 AM gregcnc: lol it won't even let me access the actual site it's on
11:27 AM Juzzy: .. aaand this is why everyone moved to discord :p
11:27 AM gregcnc: linuxcncn on discord?
11:27 AM Juzzy: i mean non-linuxcnc :p
11:28 AM Juzzy: all local meetups, gaming clans, etc etc etc
11:33 AM satiowadahc: linuxcnc is on discord too
11:33 AM satiowadahc: in the last two - three months its become very active
11:34 AM satiowadahc: https://discord.gg/c4tgHVKf
11:35 AM satiowadahc: I never can tell if IRC is actually sending messages or not
11:36 AM satiowadahc: test
11:36 AM gregcnc: pass
11:38 AM satiowadahc: gracious
12:49 PM mrec: can anyone recommend a good program for generating g-code for linuxcnc? (the application should allow me to select different strategies on various surfaces), FreeCAD is quite complicated when it comes to that
12:51 PM satiowadahc: I've had varied success with inkscapes generator
12:51 PM satiowadahc: odd thing I've had to touch up
12:54 PM CaptHindsight: mrec: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Cam
12:55 PM captain_morgan: mrec if you're not trying FreeCAD 0.19 pre-release, you should, I lot has improved in the CAM there
01:00 PM mrec: captain_morgan: I'm using the latest git version and it's difficult.
01:00 PM mrec: some operations in the path module take like 15-20 minutes to finish
01:01 PM mrec: the object is probably a bit too difficult for freecad
01:01 PM captain_morgan: yeah I've struggled with that on some complex polygons
01:02 PM mrec: https://imgur.com/a/EwuprSg (however that would still be fine)
01:04 PM mrec: https://imgur.com/a/I4TrjMq (even with the profile option it cannot cut that shape, however it's not critical either)
01:04 PM mrec: I have a large area which doesn't want to be recognized properly by several path tools
01:05 PM CaptHindsight: never used it but I heard fusion360 supported some of this
01:08 PM mrec: I don't like the subscription model of fusion360
01:08 PM captain_morgan: yup, f360 has an excellent CAM along with it's terrible subscription/Clown policy
01:08 PM CaptHindsight: gotta pay for the good stuff
01:09 PM mrec: paying is not the problem, but not for a subscription.
01:09 PM satiowadahc: and a constantly changing one
01:09 PM CaptHindsight: CAM isn't like Libre/open-office
01:09 PM mrec: and actually I already have the 3d model
01:10 PM CaptHindsight: just not as popularso there aren't great open source alternatives
01:10 PM satiowadahc: For a while every version update Eagle would be included/excluded with f360 and trying to maintain that subscription was impossible
01:13 PM captain_morgan: yyyeah, f360s constant "oh great, they changed things on me over the weekend and I can never roll back" turned me off before the subscription change
01:13 PM mrec: maybe I should create a 1mm endmill and just set up some rules accordingly
01:13 PM captain_morgan: and contantly being offline..
01:13 PM mrec: (in freecad)
01:15 PM satiowadahc: Integrations? phenomonal. Saving files to the cloud in rural canada? yeah... no thanks
01:20 PM CaptHindsight: you probably should not live there since the bandwidth is not high enough
01:21 PM CaptHindsight: now be a good consumer and move somewhere more convenient
01:22 PM satiowadahc: Social Bandwidth distancing?
01:24 PM CaptHindsight: only for people that believe in viruses, perception is reality
01:27 PM mrec: with freecad you really have to learn how to abuse all the path features, because most of them usually don't work properly for the original purpose
01:29 PM CaptHindsight: or help work on the project
01:32 PM mrec: which still requires that you go through all the features to understand their strengths and weaknesses
01:33 PM CaptHindsight: life could be easier but naaaaah
01:33 PM mrec: I could handmill the whole thing :-)
01:36 PM gregcnc: google showing it's might today
01:37 PM Tom_L: how mighty is it?
01:38 PM CaptHindsight: might make write?
01:39 PM CaptHindsight: the search engine is mightier than the hat?
01:44 PM satiowadahc: might do something?
01:48 PM captain_morgan: huzzah! my BBB parport hat arrived over the weekend, I think last part I need to get my CNC project moving along
01:48 PM unterhaus: If it comes to that, I might pay for fusion because anything else is 10 times more
01:49 PM captain_morgan: my goal is to get it moving by end of the week
01:49 PM CaptHindsight: captain_morgan: is that like an IO board?
01:51 PM unterhaus: yeah they call them hats for the beagleboard black
01:52 PM unterhaus: no, they call them capes
01:52 PM captain_morgan: CaptHindsight it really just a breakout, BBB pin headers > parallel port with level shifters
01:52 PM unterhaus: I have a BeBopEr, but I am afraid to waste any time on it
01:52 PM captain_morgan: capes, that's right
01:53 PM captain_morgan: I got this one, http://xylotex.netfirms.com/OSCommerce/catalog/product_info.php?products_id=146
01:53 PM unterhaus: I forgot about the xylotex cape, have thought about buying one
01:54 PM unterhaus: how hard is it to get lcnc running on a bBB?
01:54 PM captain_morgan: if I'd the time I would have just soldered this up on a perf board but this worked out
01:54 PM captain_morgan: dunno, first pass I'm actually going with machinekit
01:54 PM * captain_morgan ducks
01:55 PM captain_morgan: seems xylotex is the only one actually still making a breakout
01:56 PM unterhaus: I suppose machinekit is a possibility, but isn't it so dead that it's dangerous to have it online?
01:57 PM unterhaus: the MK mailing list is dominated by discussions about how dead it is
01:57 PM captain_morgan: from a somewhat outsider prospective, isn't the same said about linuxcnc?
01:57 PM CaptHindsight: i was informed that machinekit lives on as machinekit-hal
01:57 PM captain_morgan: I find documentaion for either to be dead
01:57 PM unterhaus: anyone that says that about lcnc is an idiot
01:58 PM unterhaus: lcnc is moving too fast and nobody is dedicated to docs
01:58 PM CaptHindsight: about 10 years ago someone tried to get wikipedia to drop LCNC as a dead project
01:58 PM captain_morgan: but fwiw, folks I've encountered who are still using machinekit seem to think it's the way forward
01:59 PM unterhaus: JT used to do it, but he's obviously spread too thin
01:59 PM unterhaus: I can't imagine why
01:59 PM unterhaus: they have a very small dev community, if it could be said they have one
01:59 PM CaptHindsight: i was asked to come into complete a project for an automation co and the original developer got so mad he tried to get LCNC removed from wikipedia
02:00 PM CaptHindsight: how is that for crazy spite?
02:00 PM unterhaus: lots of people are bitter that lcnc is too powerful, but they generally don't realize that's what they are mad about
02:01 PM CaptHindsight: nah, it runs on PC's and PC's are bad
02:01 PM CaptHindsight: you are not suppose to run real time on a PC
02:02 PM unterhaus: supposed to run it on an arduino
02:02 PM CaptHindsight: PC bad, smartphone good, cheap microcontroller board good
02:02 PM unterhaus: or a blue pill
02:03 PM captain_morgan: PC bad isn't my issue, it's two PC is bad
02:03 PM unterhaus: two pc good, I used about 6 to do my ph.d. thesis
02:03 PM unterhaus: all synced up over serial ports :)
02:04 PM captain_morgan: ah the bad old days
02:04 PM unterhaus: which works great if you have exactly 16 byte messages
02:04 PM unterhaus: I would do it again, really
02:04 PM unterhaus: windows responds a lot better to a 16 byte serial port message than it does to ethernet
02:05 PM unterhaus: and a lot of insturments only have windows drivers
02:05 PM captain_morgan: cool, just as long as you realize that isn't a sustainable way to run an open-source project that has any hope of attracting new developers
02:05 PM unterhaus: exploiting the most common serial port chip
02:05 PM unterhaus: why did you want 2 pc's?
02:06 PM captain_morgan: which is sort my summary of how I feel trying to come into either linuxcnc or machinekit
02:06 PM unterhaus: if you want to do 3 axis, then lcnc id dead nuts easy
02:06 PM captain_morgan: I don't, that's the point, everyone solution seems to be "just chuck an old computer with a parport at it"
02:06 PM unterhaus: what trips people up is they want to save money
02:07 PM CaptHindsight: well their time is of little value
02:07 PM captain_morgan: I've already got a massive control box, I don't want a full blown desktop dedicated to the very basic task of reading gcode and spitting it out over the parport
02:07 PM unterhaus: I have never seen a 2 pc lcnc system, not saying they don't exist
02:07 PM CaptHindsight: one PC at the machine and the other at the beach of course
02:07 PM captain_morgan: ding ding ding
02:07 PM gregcnc: there is a guy working on a lathe with 3
02:08 PM captain_morgan: i've got a very capable computer in my shop, but it doesn't have a parport
02:08 PM unterhaus: the parport interface in lcnc was a brilliant hack, but does not define lcnc at all
02:08 PM captain_morgan: nor do I want it anywhere near the cnc
02:09 PM unterhaus: I bought a $10 computer and put a $25 ssd in it and put it in my control cabinet
02:09 PM captain_morgan: fwiw, I'm going to attempt both machinekit and lcnc but dead or otherwise people *are* using MK on BBB so that'll be my focus
02:09 PM unterhaus: surplus i5
02:09 PM unterhaus: cool, keep us posted
02:10 PM unterhaus: MK runs on pc if that's easier
02:10 PM unterhaus: Michael Harbeler used to get really angry with people that said differently
02:11 PM CaptHindsight: angry works for some people
02:11 PM unterhaus: pretty much his default state, tried to prove the stereotype of Germans
02:11 PM captain_morgan: will keep posted, and I'm likely going to start live streaming some of the adventures
02:11 PM CaptHindsight: he also gave ma parenting advice, unsolicited of course
02:11 PM CaptHindsight: ma/me
02:12 PM unterhaus: "don't have kids" -- my advice, retroactive if necessary
02:12 PM unterhaus: j/k
02:13 PM CaptHindsight: i thought he is Austrian, when has an Austrian ever gone on .... oh nevermind
02:13 PM unterhaus: heh
02:13 PM unterhaus: I think Austrians have always tried to out German the Germans
02:15 PM unterhaus: CaptHindsight, anything better than strain gauges to measure small strain?
02:17 PM unterhaus: need to resolve about 10 micron
02:18 PM CaptHindsight: how many grams in a micron? :)
02:20 PM unterhaus: how long is a micron in real units?
02:20 PM jdh]: 2.718
02:21 PM unterhaus: if you ask google how long a micron is in real units they don't understand the question
02:21 PM unterhaus: I worked with people that preferred microinches
02:22 PM unterhaus: any software I wrote for them also would spit out measurements in microinches, but everybody used microns
02:23 PM unterhaus: could never remember the conversion, about 40microinches
02:24 PM roycroft: a micron is 10^-6 meter
02:25 PM roycroft: but it's an abandoned term
02:25 PM roycroft: replaced by the more conformant micrometer
02:25 PM roycroft: or micrometre for them outside the us
02:26 PM roycroft: any other use is just wrong, and always has been
02:29 PM CaptHindsight: unterhaus: maybe something MEMS
02:30 PM CaptHindsight: unterhaus: what range is required? 0-10 micronies?
02:31 PM unterhaus: I need to detect changes of 10 microns in length
02:31 PM CaptHindsight: micronies is a term I just made up that means about a micron
02:32 PM unterhaus: once I got used to precision machining, microns didn't seem as big
02:33 PM unterhaus: micrometer would seem to have the problem of being mixed up with the much more common measuring instrument named exactly the same thing
02:33 PM CaptHindsight: https://www.comsol.com/blogs/analyzing-a-mems-based-strain-gauge-design-with-simulation/
02:33 PM CaptHindsight: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3274016/
02:33 PM unterhaus: the caveat is that I need to be able to buy this device yesterday :)
02:34 PM Loetmichel: *BOOOARPSSSS* ... Note to self: when not eating anything but 2 coffee for a day: dont order the late dinner at 20:30 yourself. THAT was WAY to much. LArge salad with tuna and cheese, medium Pizza "texas" and a 12 pack of litle pizza bread rolls with bacon in them. $me is very short of bursting AGAIN. :D
02:34 PM unterhaus: I think strain gauges might work
02:35 PM unterhaus: it's going to be a pain to talk the load frame into actually sitting still
02:37 PM CaptHindsight: unterhaus: can you use something like an off the shelf fluid pressure sensor?
02:38 PM unterhaus: I lack the imagination to see how that would work? I'm measureing length changes
02:39 PM CaptHindsight: just from 0-10um?
02:40 PM CaptHindsight: maybe a laser?
02:40 PM CaptHindsight: how cheap is this supposed to be?
02:41 PM CaptHindsight: https://www.microstrain.com/displacement/nodes#cbpf=.lvdt-sensors
02:42 PM CaptHindsight: https://www.mouser.com/Sensors/Linear-Displacement-Sensors/_/N-zqfcZ1yzvvqx
02:43 PM CaptHindsight: accuracy required?
02:47 PM unterhaus: those little lvdts are really cool, but not enough resolution
02:53 PM unterhaus: what I see on Omega is somewhat disappointing
02:54 PM unterhaus: privacy badger hates the omega site
02:55 PM gregcnc: https://www.penntoolco.com/542-926a/
02:56 PM CaptHindsight: unterhaus: i have a surplus of glass scales, sincos types mostly
02:58 PM unterhaus: gregcnc, very interesting device. I used to use a digital indicator that had resolution on that order
02:58 PM CaptHindsight: mag strip with 2mm poles can get you down to the micron
02:59 PM CaptHindsight: with 12-14bit reader
03:00 PM unterhaus: trying to figure out how to mount something on an instron-style load frame though. Specimen cant be that big
03:01 PM unterhaus: but I'm starting to realize it's not that difficult
03:01 PM CaptHindsight: https://www.youtube.com/watch?v=MUdro-6u2Zg
03:01 PM unterhaus: the right test indicator might work
03:01 PM CaptHindsight: Laser diode self-mixing: Range-finding and sub-micron vibration measurement
03:05 PM CaptHindsight: https://www.nature.com/articles/nnano.2012.42 nanomechanical mass sensor with yoctogram resolution
03:05 PM CaptHindsight: do all protons weight the same?
03:08 PM unterhaus: when did multimeters turn into oscilloscopes?
03:08 PM CaptHindsight: past 10 years or so
03:08 PM CaptHindsight: and easy to upgrade
03:08 PM unterhaus: I want one
03:08 PM unterhaus: that scope the guy has is crazy
03:09 PM CaptHindsight: buy a lower cost model and unlock features in firmware
03:10 PM unterhaus: I bought a $25k oscilloscope that is so obsolete I wonder if penn State could get any money for it
03:11 PM CaptHindsight: https://www.tek.com/oscilloscope
03:11 PM CaptHindsight: unterhaus: which model?
03:11 PM unterhaus: don't recall
03:12 PM unterhaus: it was using windows me
03:12 PM unterhaus: if that helps :)
03:12 PM unterhaus: it booted last time I tried
03:13 PM unterhaus: I like the scopes where starting price is "contact us"
03:13 PM CaptHindsight: https://hackaday.com/2018/10/18/playing-doom-on-keysight-oscilloscope-via-windows-ce/
03:14 PM unterhaus: keysight is missing a bet by not having a scope with a 20" screen
03:14 PM perry_j1987: afternoon guys
03:17 PM CaptHindsight: perry_j1987: here to complain or just browsing today? :)
03:18 PM perry_j1987: what do you mean? lol
03:18 PM unterhaus: perry only brings positivity to the discussion
03:19 PM perry_j1987: lol
03:19 PM perry_j1987: my complaint for the day is they didnt bring my caps yesterday
03:19 PM perry_j1987: out for delivery today so im waiting
03:19 PM CaptHindsight: ah yeah, USPS
03:20 PM CaptHindsight: I shipped out priority last Wednesday, theonly package that arrived by Saturday was only a 50 mile trip
03:21 PM CaptHindsight: not complaining, just observing
03:29 PM perry_j1987: interesting
03:29 PM perry_j1987: thats new - amazon tracking shows my caps are 6 stops away
03:29 PM perry_j1987: shows dot on map where their truck is
03:31 PM unterhaus: all the test instrument companies have horrible websites. Tessa, Mahr
03:31 PM CaptHindsight: I've only tried that once, is it standard now for all amazon shipments?
03:31 PM unterhaus: mitutoyo is a dead loss
03:32 PM unterhaus: I dont' think amazon has real time tracking for all shipments
03:32 PM gregcnc: I found that thing i linked on the mitutoyo site in like three clicks?
03:32 PM unterhaus: gregcnc lucky :)
03:32 PM perry_j1987: no clue if its standard
03:33 PM gregcnc: been around for a while
03:33 PM CaptHindsight: https://en.wikipedia.org/wiki/Gerber_format
03:34 PM CaptHindsight: Standard Gerber, or RS-274-D. This obsolete format was revoked
03:34 PM CaptHindsight: 2014!
03:38 PM unterhaus: I used one of these, 1 micron resolution https://ecatalog.mitutoyo.com/cmimages/003/320/543-581.jpg
03:38 PM CaptHindsight: unterhaus: I think at mitutoyo.com you are supposed to have some idea of what you already want
03:38 PM unterhaus: actually the problem I had before was I wanted the manual for an existing caliper
03:38 PM unterhaus: real pain in the butt
03:39 PM CaptHindsight: took me to the Japanese version of the site
03:40 PM CaptHindsight: an but English below
03:42 PM unterhaus: fortunately I realized I was moving the battery cover the wrong way without ever finding any info about it
03:42 PM unterhaus: maybe because there is an arrow :)
03:42 PM unterhaus: this might work https://www.mscdirect.com/product/details/60475746
03:43 PM unterhaus: not sure how to mount it to my load frame though
03:43 PM unterhaus: 1.3 micron resolution
03:46 PM unterhaus: msc recommender system is genius. Recommended product: measuring tapes
03:49 PM perry_j1987: there we go got my cap
03:49 PM perry_j1987: 63v 22000uf
03:50 PM perry_j1987: linear power supply calculator said that'd work for 48v toroid that i got
03:52 PM Tom_L: should
03:52 PM Tom_L: mine were 63v caps
03:53 PM CaptHindsight: unterhaus: sure 10um tape with angstrom markings
03:54 PM unterhaus: yeah
03:54 PM unterhaus: from starrett, so you know it's great
03:54 PM unterhaus: the tesa amp and linear lever gauge from MSC is $3000 on sale
03:54 PM Tom_L: or at least expensive
03:55 PM unterhaus: in starretts defense, they make really nice tapes and it's hard to find a measuring tape in metric other than theirs
03:55 PM unterhaus: everyone else has english/metric mix, which is an abomination
03:56 PM unterhaus: hate to think about how much a mahr electronic lever gauge costs
03:56 PM CaptHindsight: I have purchased all my metric only measuring devices while in Asia
03:57 PM unterhaus: you would think there would be at least a few imports, but it's hard to find
03:57 PM unterhaus: that might be changing
03:57 PM unterhaus: you can find metric adjustable wrenches at home depot now though
04:04 PM roycroft: well, i'm at the point where my next step is to dismantle my band saw
04:04 PM roycroft: and it will be a while before i get the new stand finished, so i'm trying to think if anything i might need to cut on the band saw over the next couple weeks
04:04 PM CaptHindsight: unterhaus: I'm waiting for metric drives for sockets
04:05 PM unterhaus: everyone uses 1/4 3/8 and 1/2 drive
04:05 PM unterhaus: not changing that
04:06 PM unterhaus: the only change is there are 5mm hex bits
04:06 PM CaptHindsight: 6.275mm drive
04:06 PM roycroft: you can get those today - you can get metrics in 6.35mm, 9.525mm, and 12.7mm drive
04:06 PM unterhaus: but 1/4" hex is going to stay
04:07 PM unterhaus: bicycle frame tubes are 25.4mm 28.6mm etc
04:15 PM CaptHindsight: I'd figure they would go with even numbers for metric drives
04:15 PM gigasu_shida is now known as gigas_cedar
04:15 PM CaptHindsight: get you to buy all new sockets and extensions
04:18 PM unterhaus: maybe someday
04:19 PM unterhaus: think of the snapon fanatics that sold their children to buy socket sets
04:20 PM unterhaus: I was wondering if Wera prices are so ridiculous in Germany
04:23 PM CaptHindsight: Loetmichel: what are the popular brands of sockets and wrenches in Germany?
04:24 PM unterhaus: last I saw Loetmichel was using dollar store tools
04:24 PM unterhaus: kind of weird since their money is denominated in euros
04:25 PM unterhaus: but if they aren't using Wiha and Wera, that makes me sad
04:25 PM unterhaus: I want this millimess, but I'm not buying it https://www.ebay.com/itm/MAHR-1003-Z-Millimess-Mechanical-Dial-Comparator/274516797286?hash=item3fea79e766:g:wa0AAOSw-4Rfdi27
04:25 PM CaptHindsight: hey the "Eurostore"
04:26 PM CaptHindsight: unterhaus: i think that is just what they use at his workplace, he has better tools at home
04:34 PM CaptHindsight: interesting times, the news has actual news now
04:35 PM unterhaus: it had news before, it was just always ridiculous news
04:36 PM roycroft: news is overrate
04:36 PM roycroft: i like olds
04:37 PM CaptHindsight: the Onion had lots of competition
04:37 PM CaptHindsight: will they stop revising history now as well?
04:37 PM CaptHindsight: or pause
04:38 PM roycroft: the onion is going to have to go back to work next week
05:39 PM perry_j1987: im going to want to figure some stuff out to make these parts on the new lathe so i can stop swapping over to 4th axis mill
05:42 PM CaptHindsight: https://www.amazon.com/KOVOT-BBQ-Multitool-Extendable-Flashlight/dp/B01M037P60/ref=sr_1_3?dchild=1&keywords=extendable+knife&qid=1610407791&s=home-garden&sr=1-3
05:43 PM CaptHindsight: with flashlight for night BBQ?
05:46 PM perry_j1987: thats for tactical chasin the missus around the backyard
05:48 PM JT-Cave: chickens are all on the perch, doors down and locked, moat bridge is up, guard towers manned... time to relax
05:50 PM Tom_L: no chicken on guard?
05:51 PM Tom_L: JT-Cave, how's the range project goin?
05:54 PM JT-Cave: going to install the first one in the morning, got side tracked today and didn't finish it up in time
05:55 PM JT-Cave: owner is getting antsy and wanted to have a grand opening Friday...
05:55 PM JT-Cave: next Friday but not this Friday lol
05:55 PM Tom_L: once one works the rest should come easy other than mounting
05:56 PM JT-Cave: last order for enclosures took 4 days and I just ordered the rest today
05:56 PM JT-Cave: just have to screw them to the wall and connect up power
06:08 PM JT-Cave: yea R&D is the time sink on projects like this
06:15 PM JT-Cave: time to retire for the night
06:40 PM Loetmichel: CaptHindsight: Gedore-Dowidat and Hazet
06:40 PM Loetmichel: IF you won the lottery :)
06:41 PM Loetmichel: unterhaus: i AM using wiha and belzer and knipex. But also cheap chinese crap
06:41 PM Loetmichel: expecially where i think it will not last long anyways.
06:42 PM unterhaus: Loetmichael, no Wera?
06:44 PM Loetmichel: that, too
06:44 PM Loetmichel: i was raised in Remscheid ;)
06:44 PM unterhaus: Dowidat appears to be Bahco
06:44 PM Loetmichel: nowadays maybe
06:46 PM unterhaus: hazat is imported by the same people as import wiha and wera
06:46 PM unterhaus: In Remscheid you can only buy hazat?
06:48 PM unterhaus: CaptHindsight Hazat has their own attachment system https://www.kctoolco.com/hazet-6292-1ct-28-torque-tool-set-40-200-nm/
06:49 PM CaptHindsight: 32% off!
06:49 PM unterhaus: I bet it's metric
06:50 PM unterhaus: heh, didn't look at the price
06:54 PM unterhaus: Wera has a hammer with a ratchet wrench built in. I'd get one, but it's $115
06:55 PM gregcnc: for real? I saw a patent out of taiwan for a ratchet hammer, i thought wtf...
07:01 PM roycroft: i have a drawer full of ratchets
07:01 PM roycroft: and i have a drawer full of hammers
07:02 PM roycroft: i don't see a need to get a combination ratchet/hammer
07:04 PM roycroft: i was just about to start tearing down my band saw when i relized i needed to use it to cut some fillets on the new stand i'm making for it
07:04 PM roycroft: so i got that done just in time
07:04 PM roycroft: i could have cut them by hand, but it would have been a lot more work than using the band saw
07:08 PM Loetmichel: hehe
07:09 PM Loetmichel: i lately had to cut a bit of 100mm square tube with 6mm wall
07:10 PM Loetmichel: used the hacksaw. my apprentice couldnt belive his eyes how fast one can cut that tube with a fresh blade and some determination put into it ;)
07:10 PM roycroft: i do a lot of my woodworking with hand tools
07:10 PM roycroft: and a fair amount of fabrication work
07:11 PM roycroft: often it takes longer to set up a machine for a one-off peration than to just do it with hand tools
07:11 PM Loetmichel: (sidenote: side apprentice was/is about half a head bigger than me and a good bit more muscular, not to mention 30 years younger)
07:11 PM Loetmichel: s/side/said
07:11 PM roycroft: this was a case where the band saw saved time, albeit not much time
07:11 PM Loetmichel: indeed, setup time is usually to high for a one-off
07:12 PM Loetmichel: hence the hacksaw
07:12 PM roycroft: yes
07:12 PM Loetmichel: its only when you see the first sparks flying out of the saw cut you know that you have put enough muscle into it ;)
07:13 PM Loetmichel: on every forward stroke
07:13 PM Loetmichel: i admit i wanted to show off a little
07:20 PM unterhaus: I had a student called, "Tiny" 6'5" probably over 350 pounds
07:20 PM unterhaus: now I'm annoyed I can't remember his real name
07:20 PM Tom_L: tim?
07:21 PM unterhaus: maybe
07:23 PM unterhaus: Wera has a high voltage bottle opener
07:32 PM roycroft: wera make decent screwdrivers
07:32 PM roycroft: all that other stuff seems pretty silly to me
07:36 PM unterhaus: the torque wrenches are good and also their hex keys are really nice
07:36 PM roycroft: torque wrenches and hex keys are normal tools
07:37 PM roycroft: hammer ratches and high voltage bottle openers are not
07:37 PM roycroft: ratchets
07:37 PM unterhaus: the bottle opener is definitely a novelty tool. they also have one for canadians for some reason
07:38 PM unterhaus: I think the hammer ratchet is just facing facts, people are going to use a big ratchet as a hammer
07:38 PM unterhaus: some people
07:38 PM roycroft: i'm assuming it's just a normal bottle opener, but fully insulated like high voltage screwdrivers
07:39 PM unterhaus: it just has the same color scheme as their insulated screwdrivers so the electricians wouldn't feel left out
07:39 PM unterhaus: because there is one the color of their mechanics tools
07:39 PM unterhaus: not really high voltage
07:40 PM roycroft: i have a klein spatula that was given to me at a vendor expo years ago
07:40 PM roycroft: it's just a crappy spatula with a klein handle
07:40 PM roycroft: i use it when i'm camping
07:41 PM unterhaus: same concept, but Wear ain't giving these bottle openers away
07:41 PM roycroft: i never understood that kind of stuff
07:42 PM unterhaus: my last set of wera tools came with a sticker, they have fully adopted american promotion
07:42 PM roycroft: when i'm grilling i don't delight that i'm able to cook with a tool that resembles something i use to work on electrical wiring
07:43 PM roycroft: the appeal of such swag i just don't get
07:43 PM roycroft: the spatula handle would be great for twisting
07:44 PM roycroft: it's rather awkward for flipping
07:44 PM roycroft: but it was free, and i don't like to take anything worth any money on camping trips, because i assume it will get stolen
07:44 PM roycroft: other than my yeti cooler, but that gets locked up really well
07:45 PM roycroft: it would be very hard to steal without seriously damaging it
07:49 PM Tom_L: why own it if you don't use it?
07:49 PM unterhaus: If you search for wera on amazon you get wiha ads
08:24 PM perry_j1987: hi guys
08:25 PM perry_j1987: got my lathe setup in the new space finally
08:25 PM perry_j1987: just finished getting the old techno isel board out of the cabinet
08:25 PM XXCoder: nice
08:26 PM perry_j1987: ready to start figuring this all out for woring up
08:26 PM perry_j1987: wiring up
08:35 PM Thorhian: Does anyone know of a good way to step down 12V to 10V? I kind of need 10V for controlling my spindle...
08:38 PM Tom_L: i wound up using a smps from 24v to 10
08:38 PM Tom_L: 2v may not be enough for a regulator drop
08:40 PM Tom_L: http://www.circuitdiagram.org/24v-or-12v-to-10v-converter-lm7810.html
08:40 PM Tom_L: 7810 might do it
08:40 PM Tom_L: and it might not need a heatsink with just a 2v drop
08:41 PM Tom_L: linear reg not a smps
08:42 PM Tom_L: TO-220 and a couple caps
08:49 PM perry_j1987: hmm so techno isel said they were running the servos at 48v
08:49 PM Tom_L: i was also gonna suggest diode drops but you may not get exactly what you want
08:49 PM perry_j1987: im digging into the machine now and theres two taps 30 and 18v so recitified 24v and 12v i imagine
09:36 PM perry_j1987: hmm
09:36 PM perry_j1987: how do i calculate proper bleed resisters for this linear power supply
09:37 PM CaptHindsight: RC time
09:38 PM CaptHindsight: https://www.digikey.com/en/resources/conversion-calculators/conversion-calculator-time-constant
09:38 PM perry_j1987: cause too big a resister and defeats the purpose of the cap
09:38 PM CaptHindsight: http://www.ladyada.net/library/rccalc.html
09:38 PM CaptHindsight: https://www.allaboutcircuits.com/tools/capacitor-Charge-and-time-constant-calculator/
09:41 PM CaptHindsight: https://www.electronics-tutorials.ws/rc/rc_1.html
09:42 PM CaptHindsight: http://mustcalculate.com/electronics/capacitorchargeanddischarge.php
09:44 PM perry_j1987: looks like there is a 10w 330ohm ceramic resister on the techno isel board
09:46 PM perry_j1987: oh well crap all my resisters are at the other shop anyhow
09:46 PM perry_j1987: lol
09:49 PM perry_j1987: ty though reading now
09:51 PM perry_j1987: im going to need some bus bars
09:56 PM roycroft: holy moly
09:56 PM roycroft: i'm sure glad i patched my roof this past weekend
09:57 PM roycroft: we're due for 50-200mm of rain tomorrow and wednesday
09:57 PM roycroft: even for here that's a *lot* of rain
09:57 PM roycroft: we're under a flood watch that i suspect will be a flood warning by this time tomorrow
09:58 PM CaptHindsight: should put the fires out
09:59 PM roycroft: what tiny bits of them remail
09:59 PM roycroft: remain
09:59 PM roycroft: it's been just scattered embers for a month or so
09:59 PM roycroft: but it will also mean a lot of erosion
10:07 PM roycroft: and i have to paint some mdf tomorrow
10:07 PM roycroft: 110% humidity is not going to help with that
10:17 PM CaptHindsight: roycroft: https://twitter.com/MelissaBlasius/status/1348740338827939841 non politically speaking, but just wow
10:19 PM XXCoder: better that than being denied isulin like some people was
10:22 PM CaptHindsight: XXCoder: do you think he might have seizures by not getting his organics? :p
10:22 PM XXCoder: lol
10:26 PM unterhaus_: I told my wife if she ever had to make a statement about my death, she should work in there that I definitely din't die because I tased my nuts
10:26 PM XXCoder: LOL
10:27 PM XXCoder: it'd be funny if true, but it wasnt
10:27 PM unterhaus_: it's funny because his wife denied that he tased his nuts (in those words)
10:27 PM XXCoder: https://imgur.com/a/IpvsoHA
10:27 PM XXCoder: finally got mine. its working great after couple fixes!
10:28 PM CaptHindsight: XXCoder: ebay 2nds or?
10:28 PM XXCoder: used, it was 62, but i offered 55 and got it
10:28 PM XXCoder: taxes etc made it 75 usd
10:29 PM XXCoder: from what I can figure, last owner screwed it up by not adjusting bed, you can see damage on it
10:29 PM XXCoder: and nozzle was clogged. i cleared that up and removed some of damage
10:30 PM unterhaus_: where did you get it for 55$?
10:30 PM XXCoder: ebay
10:30 PM XXCoder: think they got couple left now
10:30 PM unterhaus_: shipping?
10:30 PM XXCoder: 14
10:33 PM unterhaus_: don't see any
10:33 PM XXCoder: second
10:34 PM XXCoder: theres still white ones
10:34 PM XXCoder: 80 usd for those
10:34 PM CaptHindsight: unterhaus_: there was also a seller on the east cost with FlashForge Finders for $95ea
10:34 PM XXCoder: can offer lower i guess
10:34 PM unterhaus_: are the white ones from the same vendor?
10:34 PM CaptHindsight: CURRENTLY SOLD OUT, oh well
10:34 PM XXCoder: https://www.ebay.com/itm/Monoprice-MP-Select-White-120-x-120-x-120-mm-Mini-3D-Printer-V2-15365/265007155876
10:35 PM XXCoder: yep!
10:35 PM XXCoder: they have 15 left
10:35 PM unterhaus_: is it the same printer just white?
10:35 PM XXCoder: yeah
10:35 PM XXCoder: black was cheaper
10:35 PM XXCoder: I suspect those is higher because better condition?
10:35 PM unterhaus_: silly, this sort of machine should be black
10:35 PM XXCoder: probably why they had more of it
10:36 PM unterhaus_: CaptHindsight is the flashforge finder a better machine?
10:37 PM unterhaus_: XXCoder, did you make a lower offer and they countered, or just offer $55?
10:37 PM XXCoder: i just offered 55 and they accepted
10:37 PM XXCoder: i wanted sub-80 usd printer and shipping was 14
10:37 PM unterhaus_: maybe I'll offer $60
10:38 PM XXCoder: probably will be fine
10:38 PM XXCoder: its damn lucky timing. those printers move fast.
10:38 PM XXCoder: black ones did anyway. white seems slower
10:38 PM CaptHindsight: https://www.amazon.com/FlashForge-Finder-Printers-Cloud-connectivity/dp/B016R9E7J2
10:39 PM unterhaus_: so a lot better pricewise
10:40 PM CaptHindsight: between the xmas season and the guberment assistance the deal seem to have passed, huh
10:41 PM unterhaus_: what does it mean that there are 5 competing offers? vendor is just going to let those expire I guess
10:41 PM XXCoder: like i said its selling quite fast i suggest offer now if want to buy one
10:42 PM CaptHindsight: yeah shipping is also only $15.50
10:42 PM unterhaus_: I offered $65
10:42 PM XXCoder: bit more for you i guess. it was just under 14 for me
10:42 PM XXCoder: hope you get it and its worth it :)
10:43 PM XXCoder: btw dont bother with wifi app, none works. lemme send you copy of gcode to setup wifi on it
10:43 PM unterhaus_: I'll have to throw away my incomplete delta sigma
10:44 PM XXCoder: https://www.mpselectmini.com/wifi/g-code_file
10:44 PM CaptHindsight: https://www.ebay.com/itm/Creality-Ender-3-3D-Printer-220mm-x-220mm-x-250mm-180mm-s/393088420130 might take some TLC
10:45 PM CaptHindsight: ah never mind it's an auction
10:46 PM CaptHindsight: unterhaus_: how big is the delta?
10:46 PM unterhaus_: probably 15" across, 2' tall
10:46 PM CaptHindsight: I was going to assemble a delta for printing silicone
10:47 PM CaptHindsight: unterhaus_: what is missing?
10:47 PM unterhaus_: I never did the arms and platform
10:47 PM unterhaus_: it has 3 linear stages and a frame
10:47 PM CaptHindsight: belt stages?
10:47 PM unterhaus_: no, ballscrew
10:47 PM unterhaus_: I don't mess around
10:48 PM CaptHindsight: I might be innerested
10:48 PM unterhaus_: misumi has extrusion the right angle
10:50 PM CaptHindsight: https://www.magballarms.com/
10:51 PM unterhaus_: he would have to change the description if he saw how exceptionally rigid my printer is
10:52 PM unterhaus_: I have thought it would work for machining
10:52 PM CaptHindsight: https://www.ebay.com/itm/Magnetic-Ball-Joints-Carbon-Fiber-and-Delrin-50um-precision-Kossel-Delta-3D-/201882506392
10:54 PM XXCoder: random but cool https://youtu.be/d7MvGFX_VKo
10:55 PM unterhaus_: CaptHindsight I have always wondered if a flexure would work for the joints
10:56 PM unterhaus_: what would be a good carriage to buy for it if i finished it?
11:11 PM perry_j1987: hows it going guys
11:11 PM XXCoder: yo
11:12 PM perry_j1987: http://support.technocnc.com/pdf/0229_LC_and_Lathe_Board-Callouts-Connectors.pdf
11:13 PM perry_j1987: should i bother with this interlock switch implementing
11:13 PM CaptHindsight: unterhaus_: I'll look tomorrow