#linuxcnc Logs
Feb 08 2021
#linuxcnc Calendar
02:02 AM XXCoder: though they seemed to just not slow down, just drift as they go down into icy area
02:39 AM CaptHindsight: XXCoder: can confirm the recipe for 11 herbs
02:40 AM XXCoder: you made em?
02:41 AM CaptHindsight: back in the 60's-80's my mother worked for KFC's advertising co, she was in the test kitchen there
02:41 AM CaptHindsight: she used to bring home bags of the mixes
02:47 AM XXCoder: wow thats cool
02:51 AM CaptHindsight: she used to bring home all sorts of test foods from the clients
02:51 AM CaptHindsight: they also did the market research
02:53 AM XXCoder: i temp worked at pastry place once
02:53 AM XXCoder: I bought a cheap box of frozen pastries
02:53 AM CaptHindsight: fun job?
02:53 AM XXCoder: think it tastes good? its far more better when freshly baked
02:53 AM XXCoder: job is just ok
02:54 AM CaptHindsight: yeah I think one item was dough wraps for hot dogs
02:54 AM CaptHindsight: i haven't had them in years but they were odd tasting
02:56 AM XXCoder: yeah?
02:56 AM CaptHindsight: I made some frozen bread and pizza doughs recently
02:56 AM CaptHindsight: all just air bread like Wonder
02:57 AM CaptHindsight: in Wonder a national brand?
02:57 AM XXCoder: wonder as in "i wonder how i got full on those bread"
02:57 AM CaptHindsight: we used to play with it like clay
02:58 AM CaptHindsight: pound it flat and roll it up, make things with it
02:58 AM XXCoder: bread like that was too expensive when I was growing up
02:59 AM CaptHindsight: mom wasn't home until about 2 hours after school, so i guess we got creative
03:00 AM CaptHindsight: XXCoder: do you bake?
03:00 AM XXCoder: nah
03:01 AM CaptHindsight: are you in the cold snap this week as well?
03:01 AM XXCoder: maybe
03:01 AM CaptHindsight: -3F here
03:01 AM XXCoder: snow predicted wed to sat
03:02 AM CaptHindsight: we got several inches late last week
03:03 AM XXCoder: if it gets snowy here then wow because its not common at all
03:03 AM XXCoder: it happens every year but always brief snow then nothing lasts
03:03 AM XXCoder: 2 years ago being exception
03:46 AM Deejay: moin
05:45 AM Tom_L: morning
06:24 AM JT-Cave: morning
06:31 AM XXCoder: good morning
08:01 AM Loetmichel: well, NOW i know why the car did feel so "wobbly" yesterday... Maybe driving a car that hat sat for 7+ months without refilling the tires wastn such a bright idea... just checked: all 4 pneus had 1.5bar left. ... should have been 2.5/3.1 bar... :( good thing i didnt drive fast. 145kph max.
08:03 AM XXCoder: isnt 145 kmh pretty fast
08:03 AM XXCoder: 90 mph
08:04 AM XXCoder: yeah thats fast lol
08:04 AM Loetmichel: cosnidering that the car CAN drive 230kph...
08:05 AM Loetmichel: and i do so normally if the fraffic/road conditions allow it...
08:05 AM XXCoder: lol well
08:05 AM XXCoder: here its impossible basically
09:32 AM unterhaus_: today's example of annoying website design https://www.slant.co/topics/983/~best-cross-platform-gui-toolkits
09:32 AM unterhaus_: doesn't seem like you can get that "i recommend" widget to go away
09:44 AM unterhaus_: QT cons: "I don't like it"
09:53 AM unterhaus_: Cons: cruelty towards programmers
10:01 AM roycroft: we still have snow in the forecast for the second half of the week
10:02 AM roycroft: it's looking more and more likely that we'll actually get it
10:09 AM JT-Shop: I use wood ash with fine dirt for dust bathing and put a bit in my raised beds when I prep them... looking for more uses of ash
10:11 AM roycroft: make soap
10:11 AM roycroft: i had a productive weekend
10:12 AM roycroft: i made some finishing turntables, and that's making shooting paint go a lot better
10:13 AM roycroft: i also made the drawer for my bandsaw stand (is it still called a drawer when it's mounted vertically?), and pulled out some shellac that i mixed up over a year ago, and the shellac still worked fine on a test piece, so i started applying it to the "drawer"
10:17 AM JT-Shop: hmm a lye leaching barrel...
10:17 AM JT-Shop: what would a vertical drawer do?
10:23 AM roycroft: i'm using it to store bandsaw blades
10:23 AM roycroft: i'll put a peg in the top of the drawer and hang them from it
10:26 AM JT-Shop: cool
11:14 AM Loetmichel: ouch. I can state with confidence: winter arrived where i live. not much snow but a solid plate of ice under the 2" snow. drove out of the driveway of the company just now, lightly touched the brakes: slid across the street up to 3" from the parked car on the other side. drove home at walking speeds. and i DO have winter tyres on that car. Fuuun!
11:19 AM JT-Cave: I see the problem right off... your using English winter tyres and you should be using American winter tires
11:40 AM roycroft: yeah, the brits have taken a brexit - you don't need to spell like them any more
11:40 AM roycroft: they're no longer part of you
11:59 AM Loetmichel: my winter tires are actually BARUM a.k.a russian
12:00 PM Loetmichel: (were the cheapest on the market)
12:02 PM unterhaus_: tublecain is such a waste of air sometimes
12:06 PM unterhaus_: he has a video about how a magnetic base works and didn't explain how it works
12:13 PM roycroft: tubelcain is a high school shop teacher from the '50s who thinks he still lives in the '50s
12:37 PM unterhaus_: sometimes I feel bad for his students, they are still out there doing weird tubelcain stuff
12:38 PM unterhaus_: You could have a video channel just correcting him
12:38 PM roycroft: he's not wrong on most things
12:39 PM roycroft: but he's old-fashioned and does not always give complete information
01:01 PM roycroft: so my new laptop is failing
01:01 PM roycroft: i have to send it back today and wait for another one
01:01 PM roycroft: so another week and a half to two weeks without it
01:07 PM Rab: roycroft, what make/model/failure?
01:08 PM roycroft: it's a late 2013 15" mbp retina display, running mojave
01:08 PM roycroft: i just bought it as a refusbished machien
01:08 PM roycroft: after about a week it started panicing on wakeup after it had hibernated overnight
01:09 PM roycroft: i had not restored a complete time machine backup from my old mbp to it
01:09 PM roycroft: i did restore my data, but installed my apps fresh
01:09 PM roycroft: and it came with a fresh os install
02:00 PM net|: is there anywhere on the internet that sells near realtime or daily satellite photo's ?
02:10 PM roycroft: try #russianmafia
02:20 PM cradek: https://zoom.earth/ is pretty cool
02:23 PM norias: i think... in theory ...
02:24 PM norias: i think people just get the data from weather sats directly
02:24 PM norias: not sure how good you are looking for
02:45 PM net|: would like to see if my friends are home sometimes
03:06 PM roycroft: you're never going to see satellite images that are that real-time unless you are willing to invest tens of thousands of dollars in a service
03:06 PM roycroft: and even then, you'll usualy get images that are at least a few hours old
03:11 PM CaptHindsight: why they are starting drone services
03:13 PM roycroft: we need some changes to our air rights laws
03:14 PM roycroft: i should be able to keep drones from flying over my propertly, but current law does not allow me to do anything to prevent it
03:16 PM roycroft: does anyone here use sure shot spray cans?
03:21 PM Loetmichel: roycroft: accidentally test your new 1000W transmitter with a dish antenna when they fly by?
03:25 PM CaptHindsight: roycroft: I have only tried this version https://www.menards.com/main/tools-hardware/power-tools-accessories/air-compressors-pneumatic-tools-accessories/air-tools/reusable-air-spray-canister/8330/p-1444421230460.htm
03:26 PM roycroft: i have a sure shot, which i like, but i either get a steady stream or a fairly fine mist
03:26 PM roycroft: they make ancillary nozzles for it
03:26 PM CaptHindsight: did not work well with Thomsons water seal
03:26 PM roycroft: i was wondering if anyone had used one, and what they recommend
03:26 PM roycroft: the sure shot does not work at all with anything water-based
03:26 PM CaptHindsight: I'm only able to get a stream no matter which nozzle
03:26 PM roycroft: it is raw steel
03:26 PM roycroft: on the inside
03:26 PM roycroft: they make an aluminium one that is fine with water-based products, but it's quite a bit more expensive
03:27 PM JT-Shop: 9/16" bimba air cylinder $60... position sensors $159 EACH
03:27 PM roycroft: i have a can similar to that one from menards
03:27 PM roycroft: it works ok
03:27 PM CaptHindsight: i just use airbrushes and HVLP spray guns
03:27 PM roycroft: but it's nothing like a sure shot
03:28 PM roycroft: https://www.sureshotsprayer.com/SteelSprayers.html
03:28 PM roycroft: that is what i have
03:28 PM roycroft: they make an adjustable nozzle, but it has plastic parts
03:29 PM roycroft: so it may not work for some solvents
03:29 PM roycroft: i usually have acetone in mine
03:29 PM roycroft: i want to get some more, so i don't have to swap out solvents when i need something different
03:29 PM roycroft: i'd like to get the nozzle situation sorted first though
03:36 PM CaptHindsight: winter fun for dogs https://twitter.com/RexChapman/status/1358806490874867712
03:40 PM perry_j1987: gah so cold out
03:42 PM roycroft: my mbp is en route to the vendor
03:43 PM roycroft: it's funny, i work from home now but i think my mbp has travelled more during the pandemic than it normally does in a year
03:46 PM CaptHindsight: https://www.youtube.com/watch?v=ym8tiajW28c 0.2mm drift in repeatability and they are publicizing the result
03:46 PM CaptHindsight: ST Robotics repeatability test
03:46 PM CaptHindsight: for a $9k robot arm
03:49 PM CaptHindsight: Inside Axis 4, 5 & 6 of KUKA KR5 Robot https://www.youtube.com/watch?v=iRKDfknqtbc
03:54 PM CaptHindsight: jump to 1:02 https://www.strobotics.com/homepage.mp4
03:55 PM CaptHindsight: not even close to 0.2mm there, unless it actually reproduces the shaky writing <0.2mm
03:58 PM unterhaus: are there pulleys with d shaped holes broached into them?
03:59 PM unterhaus: why are all pulleys like that an obnoxious pink color?
04:04 PM CaptHindsight: unterhaus: maybe so you can spot them from a distance
04:05 PM unterhaus: client is asking questions about things I would never recommend
04:06 PM unterhaus: no, not in the habit of buying tiny stepper motors
04:07 PM unterhaus: going to end up doing things over and over again and spending what a decent motor would cost
04:07 PM perry_j1987: where is the ONE size allen wrench that i need
04:07 PM perry_j1987: i have several of them too which makes it worse i cant find it
04:08 PM unterhaus: I try to put them back in the holders, and yet I have several incomplete sets.
04:09 PM perry_j1987: problem is i rearanged my shop
04:09 PM perry_j1987: now my memories of where they all are are gone heh
04:10 PM perry_j1987: there we go found one heh
04:10 PM perry_j1987: just had to tell someone my problems so it magically appeared
04:10 PM roycroft: my allen wrenches are the drawers marked "metric allen wrenches" and "s.a.e. allen wrenches"
04:11 PM roycroft: except for the ones that are dedicated to a particular machine, which are in the tool drawer for that machine
04:12 PM perry_j1987: ya but your out of driving distance to me roycroft :P
04:13 PM roycroft: i'm not suggesting you drive here
04:13 PM roycroft: i'm suggesting you get drawers with labels and put the allen wrenches in those drawers
04:13 PM perry_j1987: lol
04:14 PM perry_j1987: i dunno sounded like i have full access to your allen wrench drawers heh
04:14 PM roycroft: certainly not during pandemic times
04:14 PM perry_j1987: lol
04:15 PM perry_j1987: well you know 6' rule
04:15 PM perry_j1987: i'd have to kick you out of your own shop while im rummaging around
04:16 PM roycroft: i'm not wont to loan tools anyway
04:16 PM roycroft: which is why i have a good collection of nice tools
04:16 PM roycroft: i learned years ago that people don't honor the sundown rule any more
04:17 PM perry_j1987: lol
04:40 PM unterhaus: never use a screwdriver as a chisel, unless you borrowed it
04:41 PM unterhaus: One of the few tools I happily lent out was my code reader
04:42 PM CaptHindsight: unterhaus: was this in WWII?
04:42 PM perry_j1987: lol
04:42 PM unterhaus: might as well have been now
04:43 PM CaptHindsight: my way of asking what type of codes it reads
04:43 PM perry_j1987: that was funny
04:43 PM unterhaus: I was hoping the last person to use it would keep it
04:43 PM roycroft: the morse types, i suspect
04:43 PM unterhaus: obd2
04:44 PM CaptHindsight: yes, some are awful
04:44 PM unterhaus: it wasn't bad, back in 1995
04:44 PM unterhaus: I have a nice bluetooth one now
04:45 PM roycroft: .... . -.. ,-.. --- -. ..- -. ... .
04:45 PM CaptHindsight: https://americas.rsdelivers.com/category/robotic-arms/51293#PI-1|PS-50|viewtype-0
04:46 PM perry_j1987: think i might take a file to this aluminum the servo is mounted off of to gain some more X travel
04:47 PM CaptHindsight: unterhaus: https://americas.rsdelivers.com/product/igus/dle-dr-0003/igus-3-axis-5kg-payload-robotic-arm-construction/1765634 delta robot kit for $9500
04:49 PM unterhaus: I should take pictures of mine
04:49 PM CaptHindsight: yeah
04:49 PM unterhaus: it looks like that 9500$ has plastic ball ends
04:49 PM CaptHindsight: just reading the spec sheet now
04:50 PM unterhaus: a friend gave me some slides I use which were no doubt quite expensive
04:50 PM unterhaus: otoh, not good for a router or anything like that. I suspect they are perfect for delta
04:53 PM unterhaus: educational robots are a big scam
04:53 PM unterhaus: I tried to get a real robot for our controls lab, but it didn't work out
04:54 PM CaptHindsight: maybe an educational robot with LinuxCNC?
04:54 PM unterhaus: the educational programs from the robotics companies are meant to produce techs that can make a living programming the things, not engineers
04:55 PM unterhaus: It has to have basically zero maintenance because nobody will work on it
04:55 PM CaptHindsight: lots of papers using LinuxCNC on robots to get the control they need, or prove it out
04:56 PM unterhaus: I have no idea how those people get money to work on that. I don't think it happens in the U.S.
04:56 PM CaptHindsight: yes, learn our software system
04:56 PM CaptHindsight: heh, yeah come to think of it most I've read have been from foreign schools
04:56 PM unterhaus: it was expensive per student, like each student had to have their own license
04:57 PM unterhaus: I just got a quote for a controller from MTS, $45000. I wish I had kept working on my controller
04:58 PM roycroft: what are you trying to control?
04:58 PM unterhaus: lots of problems with real time linux when they shifted kernel versions
04:58 PM unterhaus: the controller is for a fatigue machine
04:59 PM unterhaus: problem is decent real-time combined with fairly precise A-D for the load and position
04:59 PM CaptHindsight: unterhaus: what are they using? xenomai?
04:59 PM unterhaus: mts uses real time windows of some sort
04:59 PM CaptHindsight: ah
05:00 PM unterhaus: my most successful controller used dos
05:00 PM unterhaus: I also had a real time linux version, but RTL is gone now
05:00 PM CaptHindsight: maybe RTX
05:00 PM CaptHindsight: https://en.wikipedia.org/wiki/RTX_(operating_system)
05:00 PM unterhaus: sounds familiar
05:01 PM unterhaus: I also had some aerotech motion control that used real time windows
05:01 PM CaptHindsight: https://www.researchgate.net/publication/324065133_Retrofitting_of_Asea_IRB6-S2_Industrial_Robot_Using_Numeric_Control_Technologies_Based_on_LINUXCNC_and_MACH3-MATLAB
05:01 PM unterhaus: obsoleted very quickly
05:01 PM CaptHindsight: paper from Brazil
05:01 PM unterhaus: yeah, government funding
05:01 PM CaptHindsight: comnpares LCNC vs Mach3 and matlab for robot control
05:02 PM unterhaus: there is a precision engineering center in North Carolina that essentially lives off of state money
05:02 PM unterhaus: they do good work, no U.S. federal agencies are interested in funding that kind of thing
05:03 PM CaptHindsight: yeah, not good for capitalism
05:03 PM unterhaus: The closest thing I have seen at the U.S. government level is mining research
05:03 PM CaptHindsight: surprised LCNC came from NIST
05:04 PM unterhaus: crazy how much money flows into mining
05:04 PM unterhaus: Those were different days
05:04 PM unterhaus: at NIST
05:05 PM unterhaus: it was part of a bigger program though
05:05 PM unterhaus: something something manufacturing
05:05 PM CaptHindsight: would it be Android CNC if done today?
05:06 PM unterhaus: if you could do machine learning ai into it, then you can do anything
05:07 PM CaptHindsight: looks like AI is the bandwagon to jump on
05:07 PM unterhaus: I could have done that 10 years ago and it turned my stomach
05:08 PM unterhaus: so I didn't
05:10 PM unterhaus: what I did was fun, the useful applications of it were appalling
05:14 PM CaptHindsight: I am working on image processing as feedback to Linuxcnc. Locate target, modify path, check the work after.
05:15 PM CaptHindsight: I might have to start calling it AI for LCNC
05:17 PM unterhaus: yeah, image processing has been incorporated into AI, you just need to learn how to spin it
05:17 PM perry_j1987: like what openpnp is doing
05:18 PM unterhaus: didn't jon Elson do some linuxcnc pick and place?
05:18 PM CaptHindsight: yes
05:18 PM JT-Cave: Jon has a couple pick and place, want one?
05:19 PM unterhaus: Capt'n is doing pick and place for making better viruses that will kill us all
05:19 PM unterhaus: that's the way I remember it
05:20 PM CaptHindsight: we did use LCNC to make DNA synthesizers using Epson printheads
05:21 PM net|: google maps launched in 2005 but there were satellites with realtime photo access before then and 15 years later and the public still has no access to realtime satellte data.... very dissapointing. russians, cia what is it... ?
05:21 PM CaptHindsight: you don't matter
05:21 PM CaptHindsight: you are the product
05:22 PM CaptHindsight: more money and power withholding it from the public
05:23 PM CaptHindsight: https://eos.com/products/landviewer/
05:25 PM CaptHindsight: https://spymesat.com/
05:27 PM CaptHindsight: https://spymesat.com/uploads/1/3/1/7/131747699/space_selfie_pdf.pdf
05:28 PM CaptHindsight: https://rammb-slider.cira.colostate.edu/?sat=goes-16&z=0&angle=0&im=12&ts=1&st=0&et=0&speed=130&motion=loop&maps%5Bborders%5D=white&lat=0&opacity%5B0%5D=1&hidden%5B0%5D=0&pause=0&slider=-1&hide_controls=0&mouse_draw=0&follow_feature=0&follow_hide=0&s=rammb-slider&sec=full_disk&p%5B0%5D=geocolor&x=10848&y=10848
05:30 PM CaptHindsight: https://spectator.earth/
05:31 PM CaptHindsight: https://soar.earth/
05:37 PM CaptHindsight: https://www.azavea.com/blog/2020/01/02/how-to-find-the-most-recent-satellite-imagery/
05:39 PM CaptHindsight: perry_j1987: if openpnp had used LCNC they would have been able to support many more features
05:39 PM CaptHindsight: vs having to write them every time it came up
05:40 PM perry_j1987: for some reason i thought he forked lcnc
05:40 PM CaptHindsight: but that was when *duinos were going to revolutionize everything
05:41 PM CaptHindsight: was duino and then later Rpi
05:42 PM CaptHindsight: https://github.com/openpnp
05:48 PM CaptHindsight: net|: same day imagery but at limited res ^^
06:08 PM Tom_L: JT-Cave, ever get the buster install figured out?
06:08 PM JT-Cave: on?
06:08 PM Tom_L: the lack of gui
06:08 PM * JT-Cave can't relate funny names to debian
06:09 PM Tom_L: debian 10
06:09 PM Tom_L: all toy story names
06:09 PM JT-Cave: finally got debian 10 standard downloaded this morning going to try tomorrow
06:09 PM * JT-Cave never watched tory story
06:09 PM JT-Cave: or toy story even
06:10 PM JT-Cave: btw Bob has collected 80 pounds of lead from the range in two weeks
06:10 PM JT-Cave: I think he is doing well
06:10 PM Tom_L: heh
06:10 PM Tom_L: sounds like it
06:11 PM Tom_L: all still working good i assume then
06:11 PM JT-Cave: one HMI is flaky and does not show the current yards but other than that all is well
06:13 PM Tom_L: does he sell weapons etc as well?
06:13 PM Tom_L: reload supplies etc
06:13 PM JT-Cave: yea and has a cafe
06:14 PM JT-Cave: not seen any reloading stuff just guns and bullets and targets and some other stuff
06:15 PM JT-Cave: I was surprised at how much the back boards for the targets had been shot up in 2 weeks
06:16 PM Tom_L: hah
06:16 PM Tom_L: what's he use for them? mdf or something?
06:17 PM JT-Cave: 1/4" plywood or maybe luan dunno
06:17 PM Tom_L: something cheap....
06:17 PM JT-Cave: yeah
06:18 PM JT-Cave: chow time here, all the chickens are on the roost and have been tucked in and read the sky is falling
06:18 PM Tom_L: 12F currently
06:24 PM unterhaus: I wonder if gun range owners have anger issues
06:25 PM unterhaus: are they all divorced?
06:25 PM net|: https://soar.earth/
06:34 PM jymmmm: JT, starlink beta is available, hardware is $588.81 and $99/mo. No caps currently, 50Mb/s to 150 Mb/s, latency 20 to 40ms,
06:35 PM jymmmm: JT latency estimated to goto 16 to 19ms by summer 2021
06:35 PM jymmmm: JT no contracts
06:36 PM jymmmm: JT limited time beta, they gave me 15 minutes to sign up
06:37 PM Tom_L: jymmmm, skunkworks just got it i think
06:37 PM jymmmm: Tom_L: ah ok
06:37 PM jymmmm: I didn't expect $600 in hardware
06:39 PM Tom_L: 04:50 PM skunkworks: getting a consistant 100X40 give or take
06:45 PM unterhaus: I somehow managed to blow up 3 servo drives and now I'm hesitant to power things up
06:49 PM Tom_L: how did you blow them?
06:49 PM Tom_L: should we start calling you _unreal_ ?
06:59 PM unterhaus: the first one I ran with one of the wires loose, which shouldn't have blown it
06:59 PM unterhaus: the other ones, no idea, they just started flahsing thw wrong pattern on the led
07:00 PM unterhaus: but I probably have blown up more $ than unreal
07:00 PM Tom_L: is there a blink pattern list in the data sheet?
07:01 PM unterhaus: yeah, the one they blink says, "return to factory"
07:01 PM Tom_L: heh
07:02 PM unterhaus: but, factory has been gone for years
07:03 PM unterhaus: as contrary as I am, I would like to figure out what's wrong and fix
07:04 PM Tom_L: then you can be the factory!
07:11 PM unterhaus: there are companies that work on them, but I'm not spending that much
07:12 PM CaptHindsight: net|: I get daily images of the cloud cover here :)
07:13 PM * CaptHindsight thanks unterhaus for the heads up on loaning him any motor drives
07:13 PM unterhaus: the power modules have 6 pins with various diagnostics, and I have thought about probing them
07:13 PM unterhaus: problem is I would have to solder wires to the pins
07:14 PM unterhaus: at this point I don't want to borrow any drives, I would feel bad when I ghosted you
07:15 PM CaptHindsight: jymmmm: yeah I hope they don't get capped or start getting saturated
07:20 PM roycroft: capthindsight: satellite weather images are quite different to the high resolution images that can pick out individual buildings
07:23 PM CaptHindsight: roycroft: we have been overcast for about a week, the high res images are all just clouds
07:27 PM roycroft: there probably aren't even any recent high-res images of your area, unless there are things like interesting military installations that the spy satellites like to look at
07:27 PM roycroft: it's really expensive taking high-res pictures from space
07:28 PM roycroft: the civilian outfits that do it only cover any individual area periodically, unless it's something really interesting like a lava flow
07:28 PM roycroft: there's just not enough bandwidth on the satellites for them to snap high-res pictures constantly and downlink them all
07:30 PM unterhaus: in much of the U.S., a satellite can't see the ground in the afternoon in winter
07:32 PM roycroft: that's not actually true - infrared images can be seen thorugh cloud cover
07:32 PM roycroft: s/seen/captured/
07:36 PM -!- #linuxcnc mode set to +v by ChanServ
07:38 PM perry_j1987: who was it that had all those emco compact 5 lathes
07:41 PM CaptHindsight: perry_j1987: think of a black animal about the size of a cat with a white stripe down its back
07:41 PM CaptHindsight: that might work
07:41 PM perry_j1987: ty heh
07:43 PM CaptHindsight: https://www.youtube.com/watch?v=HM3UR5sJ5X8
07:44 PM unterhaus: the department used to have a manual emco just like those. It was miserable to use, even if you were desperate
07:44 PM unterhaus: probably work a lot better cnc'd
07:45 PM perry_j1987: im tryin to find dimensions on the 6position turrets they had for those
07:52 PM unterhaus: I'm going to go measure something on one of my remaining servo amps. If you smell smoke, call 911
07:58 PM Tom_L: i'll wait for the mushroom cloud
07:59 PM roycroft: the satellites would definitely take non-stop pictures of a mushroom cloud
08:04 PM unterhaus_: well, the 5v for the encoder output is internal and not referenced to the external voltage supply at all
08:05 PM unterhaus_: need an isolated input on the mesa
08:06 PM Tom_L: my sherline driver had a floating gnd too, i had to get an isolation board for it to use with linuxcnc
08:07 PM unterhaus_: what did you get?
08:07 PM Tom_L: it was specific to those drivers
08:07 PM unterhaus_: sad thing is there is an alternate design that has external power for the encoder outputs
08:08 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/PDF/kbsi_240d_manual.pdf
08:08 PM Tom_L: i'm not using any of that now that i have the bldc spindle motor
08:09 PM unterhaus_: I guess they didn't feel like isolating the encoder outputs
08:15 PM unterhaus_: the output of my 5v I'm feeding to the mesa floats, so it seems like I could hook it to the encoder ground on the servo amp
08:18 PM Tom_L: it's not grounded anywhere else?
08:19 PM Tom_L: if the encoder gnd is floating and another one isn't that smells like trouble
08:19 PM Tom_L: that was also the case on the sherline motor driver
08:20 PM roycroft: does trouble smell anything like teen spirit?
08:29 PM unterhaus_: most industrial power supplies are floating until you tie them to something
08:30 PM unterhaus_: somehow the grad students don't appreciate it when I point that out to them as the reason their project doesn't work
08:32 PM unterhaus_: if it wasn't an ethernet mesa board, it would be a problem because the mesa board would be using computer ground
08:36 PM unterhaus_: but I have to make sure the ground on the supply is really floating or there will be smoke, btdt
08:54 PM unterhaus_: the encoder ground is the same as the ac power ground, so that should be easy to deal with
08:55 PM Tom_L: no smoke yet ehh? still got all your hair?
09:01 PM unterhaus_: I didn't take the plunge and connect anything, still taking measurements
09:01 PM unterhaus_: I have been losing hair for some number of years now
09:10 PM CaptHindsight: unterhaus_: https://www.youtube.com/watch?v=_55eF4tb-eU Machine Learning Algorithms used in LinuxCNC
09:11 PM CaptHindsight: "analyze tool breakage or bad clamping issues"
09:14 PM unterhaus_: we actually had a program where we could have done that but it went away after 5 years
09:16 PM unterhaus_: if reddit is worth $250mil, how much is the lcnc forum worth?
09:18 PM XXCoder: 250 million
09:18 PM XXCoder: gold atoms that is
09:21 PM unterhaus_: CaptHindsight, maybe I need ot get business insurance and form an LLC
09:22 PM unterhaus_: seems like a lot of work for my pathetic consulting efforts
09:31 PM roycroft: who cares about gold? that stuff is almost worthless, except for storing latinum
09:32 PM XXCoder: 250 million atoms of gold isnt worth much anyway
09:32 PM Tom_L: makes good anchors
09:32 PM Tom_L: nice n heavy
09:40 PM unterhaus_: gold is quite useful.
09:40 PM unterhaus_: price of diamonds should be twice whatever they use for sandpaper
09:41 PM XXCoder: gold is one of most useful element... too bad its "valuable"
09:41 PM roycroft: i did not say it's useless
09:41 PM roycroft: i said it's worthless
09:42 PM unterhaus_: although I helped out a company that insists they can cut steel with diamonds
09:42 PM Tom_L: roycroft, one man's trash is another man's treasure
09:42 PM unterhaus_: that may make diamonds worth 10x whatever they use for sandpaper
09:50 PM roycroft: industrial diamonds are not overpriced, and can be produced to meet demand
09:53 PM unterhaus_: can you get diamond sandpaper?
09:55 PM Tom_L: https://www.amazon.com/Diamond-Sandpaper-Sanding-Polishing-Concrete/dp/B07G34G775
09:57 PM unterhaus_: I might have some diamond polishing pads for tile work
10:04 PM unterhaus_: I should have checked to see if the analog ground is the same as wall ground
11:08 PM XXCoder: unterhaus_: might want to buy 2 gb sdcard (not sdhc) to be ready for your mini
11:08 PM XXCoder: my sdcard died and uhh it doesnt work with shiny 32 gb I bought for it lol
11:09 PM XXCoder: i just ordered some 2 gb ones
11:34 PM unterhaus_: okay, thanks
11:35 PM XXCoder: i used really crap one from cheap handheld game machine, it didnt actually come with one
11:35 PM XXCoder: did yours?