#linuxcnc Logs

Jul 09 2020

#linuxcnc Calendar

12:20 AM jymmmm: CaptHindsight: and comes with a side order of poutine!
12:28 AM CaptHindsight: jymmmm: poutine is just a stereotype, what they are really like https://youtu.be/wdl0QhFOh20?t=5
01:03 AM jymmmm: CaptHindsight: https://www.youtube.com/watch?v=RLd6174bz2k
01:16 AM miss0r: morning
02:45 AM miss0r: my god what a mess. My primary flood coolant pump just blew a gasget. and I didn't notice untill no coolant came from the nozzles... 50 some litres on the floor...
02:46 AM miss0r: thats the issue with working out of a garage. The floor declines slightly towards the garage door behind the cnc..
03:24 AM Loetmichel: miss0r: shouldnt a garage be designed to be "self-draining"?
03:24 AM Loetmichel: i mean if cars are in there in the winter the melting snow has to go somewhere as well
03:24 AM miss0r: yeah. running out the garage door...
03:25 AM Loetmichel: and hopefully a floor drauin in front of the garage?
03:27 AM miss0r: yep
03:27 AM miss0r: still a mess on the 1.5 meters of floor leading to the drain
03:31 AM Loetmichel: one of the reasons i have a couple of mist coolers on my machines
03:31 AM Loetmichel: also they have no basin for flood coolers ;)
03:58 AM rmu|w: you really should not flush your typical coolant fluid down the drain
04:01 AM miss0r: rmu|w: Agreed. And I didn't mean to either :) I just replaced it two weeks ago
04:32 AM Loetmichel: rmu|w: accident != intentionally flushing it
05:09 AM JT-Cave: morning
06:18 AM Tom_L: morning
06:19 AM XXCoder: lo
06:19 AM Tom_L: t-storm just moved thru
06:43 AM JT-Cave: looks like the whole eastern half of Kansas is having t-storms
07:49 AM veegee: It's just because I buy a lot (vast majority) of my equipment used but in good condition
07:49 AM veegee: You have to be patient for a good deal. It takes months sometimes
07:50 AM veegee: On another note, I'm noticing water slowly leaking from my air hose fittings, even though I'm using teflon tape
07:51 AM veegee: I'm not going crazy on tightening the fittings, but maybe I should since pipe thread relies on that mechanism for a good seal
07:51 AM veegee: The fittings on the air tank and other equipment were super tight but never leaked. I just don't want to damage the expensive brass fittings. Don't really care about the cheap galvanized fittings
09:19 AM jymmmm: good morning
09:35 AM gregcnc: if lack of sleep and headache are good
09:37 AM jymmmm: What's sleep??
10:31 AM veegee: Yeah same here. Tired and headache
10:47 AM pink_vampire: morning
10:49 AM Tom_L: veegee, treat them like they were gas lines :)
10:58 AM Tom_L: gregcnc, at some point you just feel lucky you woke up
11:01 AM pink_vampire: I'm thinking to make a bushing to the multifix.
11:02 AM gregcnc: did the bolt get finished?
11:02 AM pink_vampire: it is 100% functional, but the screw is OD is 8mm and the QCTP is 13mm ID
11:02 AM pink_vampire: gregcnc: yes
11:03 AM pink_vampire: so the nut on top hold it fine by clamping it down
11:04 AM pink_vampire: but I'm thinking maybe to add 8ID 13OD bushing, to make sure it stay on center.
11:04 AM gregcnc: that would probably be useful
11:05 AM pink_vampire: gregcnc: cad https://i.imgur.com/NJPIZ3K.png on the lathe https://i.imgur.com/uuQdkW5.png done https://i.imgur.com/TlE3VY9.png
11:06 AM pink_vampire: the left one is the one I did.
11:10 AM Tom_L: was the shoulder near the head on the original somewhat of a press fit?
11:10 AM gregcnc: the head on that is odd. most lathes just have a t slot in the tool post?
11:10 AM pink_vampire: Tom_L: kinda..
11:10 AM pink_vampire: it is 7.95 on the original they did something like reduce shank but I just did it 7.95 all the way. it work perfect
11:15 AM Tom_L: did you see the bolt skunkworks made?
11:15 AM JT-Cave: no
11:15 AM Tom_L: completely with his comp thing
11:16 AM pink_vampire: yes, the hex one
11:16 AM Tom_L: http://electronicsam.com/images/greenmachine/IMG_20200708_190635.jpg
11:16 AM pink_vampire: this one I didn't saw
11:19 AM pink_vampire: is that a hand written gcode?
11:19 AM Tom_L: it's a lcnc comp
11:19 AM pink_vampire: comp?
11:21 AM Loetmichel: *hehe* bad car exhaust has its perks... i just rolled into the street i live at, phone rings. i press the botton to take the call while tunding into our driveway... call ends... was my wife wanting to know when i am home. the moment i took the call she noticed the "BRBLBRBL" of my car rolling onto the backyard and dropped it ;)
11:21 AM pink_vampire: component? competition?
11:21 AM Tom_L: yes
11:21 AM Tom_L: component
11:22 AM Tom_L: it could be a competition too
11:23 AM pink_vampire: sounds cool to me
11:25 AM pink_vampire: Loetmichel: you need to write a book "the diary of an RF engineer"
11:26 AM Loetmichel: do i?
12:11 PM commavir_ is now known as commavir
01:19 PM jymmmm: Does anyone need a 25KWH 480VAC 3 phase inverter?
01:29 PM pink_vampire: jymmmm: sure
01:30 PM jymmmm: pink_vampire: you got 1000A DC ?
01:30 PM pink_vampire: LOL
01:32 PM * SpeedEvil just wants a 240V 20kW single phase one.
01:32 PM SpeedEvil: But I'm DIYing
01:33 PM jymmmm: SpeedEvil: Any idea on how to go from 440 3ph to 220 1ph ?
01:33 PM SpeedEvil: Not in general.
01:34 PM jymmmm: SpeedEvil: And if you really want 240 20KW, let me know
01:34 PM SpeedEvil: Ah - I mean I am DIYing the inverter from scratch.
01:34 PM jymmmm: SpeedEvil: Oh, why?
01:35 PM SpeedEvil: jymmmm: proper inverters are expensive and not designed for my odd requirements.
01:35 PM jymmmm: define odd
01:35 PM SpeedEvil: ~36V in DC
01:35 PM jymmmm: not 48 huh?
01:36 PM SpeedEvil: I have quite a lot of panels and cells, and it seems to make an overall simpler system than 48.
01:36 PM jymmmm: SpeedEvil: you powering from an ebike? lol
01:36 PM jymmmm: Wait, how is 36 simpler than 48?
01:37 PM jymmmm: Even PoE runs on 48
01:38 PM SpeedEvil: There is no particular benefit for me for doing 48.
01:39 PM jymmmm: SpeedEvil: so you have 36v inverter already?
01:40 PM SpeedEvil: I have many of the parts.
01:40 PM jymmmm: SpeedEvil: I'm working on various ideas/systems, so understanidng why to have/want/like 36 over 48 helps
01:40 PM SpeedEvil: It just happens that most of the components I have for DC-DC top out at 40V
01:41 PM SpeedEvil: this is not a particularly good reason to choose 36V, but it, combined with the solar panel max voltage is about where I've ended up.
01:42 PM SpeedEvil: Anyway, the DC side voltage is somewhat flexible in the inverter, the AC side won't change as all that matters to that is the HVDC bus
01:42 PM jymmmm: So it's rimarily based on "what you have" rather than "start from scratch"?
01:43 PM SpeedEvil: It's pretty modular. Iwant to get something up and running, and Ican do this easily in a small way (2kW to start) which will be fine for baseload
01:46 PM jymmmm: modular is good. logistics is my nemesis, so I'm always fighting against that.
01:50 PM jymmmm: SpeedEvil: I was trying to get some really nice (never cycled) cells, but they come up, then sold out in a day, so not good for an ongoing project. So now having to look at alternatives, including all the various modules and see what fits together more unirvesally thanspecific
01:52 PM SpeedEvil: I got of the order of a thousand https://www.aliexpress.com/item/32974463553.html
01:52 PM SpeedEvil: Which seem on a random sampling and 100 cycle test of 10 cells to be just fine.
01:53 PM jymmmm: SpeedEvil: Do you WANT 18650 over larger cells?
01:54 PM SpeedEvil: I could not find a vendor of larger cells that would ship
01:54 PM SpeedEvil: (at sane prices)
01:54 PM jymmmm: SpeedEvil: UK?
01:54 PM SpeedEvil: yes
01:54 PM jymmmm: SpeedEvil: and you want LiPo instead of LiFe?
01:55 PM SpeedEvil: The numbers seem to work - mostly keeping them under 70% charge.
01:56 PM jymmmm: Well, 2000 vs 5000 cycles being the difference
02:00 PM jymmmm: SpeedEvil: Do you have to pay VAT from netherlands or italy?
02:01 PM SpeedEvil: What research I've found seems to imply cool cells ran to 70% charge can exceed 2000 cycles by a large fraction
02:01 PM SpeedEvil: I have enough at the moment to be going on with
02:02 PM jymmmm: SpeedEvil: Charging them to what, 4.1v?
02:02 PM SpeedEvil: More like 4 IIRC.I'd have to look up the curve
02:02 PM jymmmm: or just not deep discharging them?
02:03 PM SpeedEvil: Charging to >70-80% causes long-term degradation over time, especially when warm
02:03 PM jymmmm: So from 80 to 70%, that seems very minimal
02:10 PM SpeedEvil: Err - no - to over between
02:23 PM jymmmm: SpeedEvil: So don't discharge below 70% is what you are saying?
03:13 PM CaptHindsight: 3 weeks door to door from China via Speed-Pak
03:23 PM jymmmm: CaptHindsight: what did you get?
03:30 PM CaptHindsight: SARS Santa Masks
03:52 PM CaptHindsight: what were the issues that users had with using Linuxcnc for FFF/FDM printers besides needing a PC?
03:53 PM CaptHindsight: monitoring extruder temperature?
03:53 PM CaptHindsight: calculating extrusion rates on the fly?
03:55 PM CaptHindsight: lack of G29 calibration for floppy printers?
03:59 PM Tom_L: what sensors do they use for that?
04:01 PM CaptHindsight: Tom_L: https://www.simplify3d.com/support/articles/beginners-guide-to-auto-bed-leveling/
04:02 PM Tom_L: just a series of 3 buttons or such?
04:02 PM CaptHindsight: any sensor that changes state upon contact with the bed using Z
04:04 PM CaptHindsight: looks like Marlin, smoothieware etc has G29 as a canned routine
04:04 PM CaptHindsight: https://reprap.org/wiki/G-code#G29:_Detailed_Z-Probe
04:05 PM CaptHindsight: why auto bed leveling if your machine is built square?
04:05 PM CaptHindsight: so you can print on a corrugated print bed?
04:07 PM CaptHindsight: https://sites.google.com/site/yeltrow/linuxcnc-as-a-3d-printer
04:09 PM Tom_L: most of them are so flimsy i doubt they stay square and level
04:18 PM W1N9Zr0: heated beds also deform with different temperatures, and calibration lets you compensate for that too. good luck keeping 3mm aluminum sheet flat within 0.1mm otherwise
04:19 PM jymmmm: glazed ceramic bed 2" thick
04:23 PM roycroft: aluminium moves a *lot* with temperature changes
04:24 PM Tom_L: use a cast iron plate
04:26 PM roycroft: are we discussing 3d printers?
04:26 PM Tom_L: no
04:27 PM Tom_L: thermal expansion of materials
04:27 PM roycroft: i saw "heated beds" mentioned
04:27 PM roycroft: which is why i thought it might be in the context of 3d printers
04:27 PM roycroft: not that they are the only things in the world with heated beds
04:28 PM Tom_L: it may have been but i side tracked it
04:29 PM roycroft: i'll just mention that mine has a heated bed, and i have a pice of borosilicate plate on top of the bed
04:30 PM roycroft: if i home the z axis, and calibrate the bed cold with a post-it note under the nozzle in all four corners, when it's heated the nozzle is pretty much right on the bed
04:30 PM gregcnc: I think we also need a coal fire to heat teh cast iron bed
04:30 PM roycroft: you could just leave it out in the sun
04:30 PM roycroft: on a hot summer day it will get well over 60 degrees
04:30 PM Tom_L: fry some eggs on it when you're done
04:31 PM roycroft: paint it black if you want it to get even hotter
04:31 PM Tom_L: then you'll have something useful
04:31 PM gregcnc: oh yeah season the bed as well
04:32 PM roycroft: so i needed to make some precise angle jigs for cutting some tiny pieces of wood
04:32 PM roycroft: 22.5 degrees, 45 degrees, and 67.5 degrees
04:32 PM roycroft: i cut the angles on my table saw, using my incra miter gauge
04:33 PM roycroft: then i measured them with a precision protractor
04:33 PM roycroft: 22 degrees 25 minutes, 45 degrees spot on, and 67 degrees 25 minutes
04:33 PM Tom_L: make 2 22.5 and one 45 or 4 22.5
04:33 PM roycroft: that's just with the built-in stops on the miter gauge
04:33 PM roycroft: i'm very happy with it :)
04:34 PM roycroft: 5 minutes off is definitely close enough for wood
04:34 PM roycroft: i was planning on using the built-in stops for the rough cuts, and then i'd fine tune them
04:34 PM roycroft: but i called it done after that
05:29 PM jymmmm: unless you are running 10 mnutes behind
05:50 PM roycroft: time is relative
05:59 PM CaptHindsight: I would like a coal fired FDM printer
06:00 PM CaptHindsight: roycroft: my original questions were about LCNC to control FFF/FDM printers
06:00 PM CaptHindsight: why not? What is missing?
06:02 PM SpeedEvil: I want a printer that makes carbon carbon composite
06:02 PM SpeedEvil: Ideally without the build volume being glowing white hot.
06:04 PM Tom_L: some at the votech have carbon fibers in the goo
06:11 PM CaptHindsight: SpeedEvil: I have plans for CF weaver with different resins
06:12 PM SpeedEvil: carbon carbon composite is carbon fiber with a carbon 'resin'
06:12 PM SpeedEvil: It is really quite awesome and very, very expensive
06:13 PM CaptHindsight: most resins are hydrocarbons, what are you specifically referring to?
06:13 PM CaptHindsight: <gets the marketing dictionary out>
06:14 PM CaptHindsight: SpeedEvil: have alink?
06:14 PM SpeedEvil: Actual carbon
06:14 PM CaptHindsight: ok and what else
06:14 PM SpeedEvil: Typically you take your preformed part, infuse it with pitch with carbon particles, sinter at ~3000C or something stupid, and repeat until fully dense
06:15 PM SpeedEvil: https://en.wikipedia.org/wiki/Reinforced_carbon%E2%80%93carbon Gas phase is also used
06:17 PM CaptHindsight: brake quality is not too hard
06:17 PM Tom_L: related to the article, the vo'tech 3d prints wing patches and makes a direct fit for carbon wing repair as part of the NIAR department
06:17 PM CaptHindsight: brake pad
06:17 PM Tom_L: sp/3d print/3d scans
06:18 PM Tom_L: afik they're the only ones that can remotely do wing repair
06:39 PM CaptHindsight: anyone besides Andy use Octoprint?
06:39 PM CaptHindsight: in here
06:40 PM jdh: me
06:51 PM CaptHindsight: jdh: is Octoprint just a web based GUI with a slicer?
06:52 PM pink_vampire: no
06:52 PM CaptHindsight: i can't find a list of firmware that it works with
06:52 PM CaptHindsight: the wiki does not explain what octoprint actually is and is not
06:54 PM perry_j1987: g'evening guys
06:55 PM perry_j1987: octoprint is a web interface that lets you upload your gcode and hit print adjust temps visualize the gcode etc
06:55 PM perry_j1987: just a control interface like axis
06:57 PM CaptHindsight: perry_j1987: is there a list of firmware that it is already compatible with?
06:57 PM perry_j1987: what firmware do you have
06:57 PM CaptHindsight: none
06:57 PM W1N9Zr0: octoprint is a print server, like CUPS for 2D printers. it'll work with anything that talks GCODE over serial port
06:57 PM perry_j1987: works with marlin, reprapfirmware, smoothieware etc
06:57 PM CaptHindsight: thanks, can't find a list
06:58 PM perry_j1987: W1N9Zr0 its more like Axis in linuxcnc terms
06:58 PM perry_j1987: you can jog around, adjust heaters etc
06:58 PM perry_j1987: it works with all of the ones you'd be running it with in long story short
06:58 PM Tom_L: CaptHindsight, i think JT-Cave uses it
06:58 PM CaptHindsight: looking for the long story
06:59 PM perry_j1987: are you building or buying a printer
06:59 PM perry_j1987: if your building it then octoprint will work with any firmwares you have access to
06:59 PM CaptHindsight: I don't anyone has written a what is octoprint doc
07:00 PM CaptHindsight: OctoPrint provides a snappy web interface for controlling consumer 3D printers
07:00 PM CaptHindsight: W1N9Zr0: has given me a more complete answer than anything on their wiki or docs so far
07:01 PM perry_j1987: except that its more like Axis and not CUPS :)
07:03 PM CaptHindsight: CUPS with a printer control GUI?
07:03 PM perry_j1987: na.. more like Axis haha
07:04 PM perry_j1987: its axis done as a web interface instead of native instaled program
07:04 PM CaptHindsight: I have a felling it was developed by a non native English speaker
07:05 PM CaptHindsight: feeling even
07:05 PM perry_j1987: she's European
07:05 PM W1N9Zr0: perry_j1987: i'm assuming people use it more for printing than jogging, nobody touches off a 3d printer :P but yeah it's more like axis in that it has print preview, override controls etc
07:06 PM CaptHindsight: Axis with serial G-code server to drip feed Marlin over USB
07:06 PM perry_j1987: W1N9Zr0 aye not touching off persay but initiating a z probe and MDI type work, data visualization
07:06 PM perry_j1987: yep, if you want a cool firmware give klipper a try
07:07 PM perry_j1987: runs a dumb firmware on the microcontroller for all the realtime work and pathing and math is handled on the computer running ocotprint
07:07 PM CaptHindsight: does Klipper work on stm32?
07:07 PM perry_j1987: ya
07:07 PM CaptHindsight: are the comments source better or worse than Marlins?
07:08 PM CaptHindsight: commenthe source
07:08 PM perry_j1987: marlin is well established
07:08 PM perry_j1987: klipper is new kid on the block
07:08 PM perry_j1987: but a much higher potential
07:08 PM perry_j1987: the main guy behind klipper does a good job
07:08 PM CaptHindsight: and dyslexic
07:09 PM perry_j1987: if you're wanting a delta type printer i'd stay away from 8bit boards and marlin
07:09 PM perry_j1987: runs too slow
07:09 PM CaptHindsight: why Klipper and some gui like octoprint vs LinuxCNC?
07:10 PM perry_j1987: you could run linuxcnc but not everything is done for you
07:10 PM perry_j1987: that'd be fairly excruciating i'd think
07:10 PM CaptHindsight: does Klipper support servos?
07:10 PM perry_j1987: i believe so
07:11 PM CaptHindsight: is not done?
07:11 PM CaptHindsight: what is not done?
07:11 PM perry_j1987: none of the 3d printer firmwares are ever done
07:11 PM CaptHindsight: <keyboard issues>
07:11 PM W1N9Zr0: a lot of slicers can talk to the octoprint API, so you can go from STL model to printing in one click, without even touching the gcode file
07:11 PM Tom_L: CaptHindsight, in all honesty is linuxcnc done?
07:12 PM Tom_L: surely not as popular for 3d printing but capable i'm sure
07:12 PM CaptHindsight: "perry_j1987> you could run linuxcnc but not everything is done for you" what is not done in which application?
07:12 PM perry_j1987: oh i mean with 3d printer firmware youre already set with thermal runnaway and other safety features
07:13 PM perry_j1987: it handles everything you need for the printer i wouldnt even consider linuxCNC for a printer
07:13 PM W1N9Zr0: nozzle temperature control, bed leveling, linear advance
07:13 PM CaptHindsight: so octoprint can align the extruder nozzle to an XY locations based on my camera?
07:14 PM W1N9Zr0: you can wire those together out of lcnc components, but on 3d printers it works by default
07:14 PM perry_j1987: cameras in 3d printing are just used for observation
07:15 PM CaptHindsight: ok so no machine vision alignment with octo and Klipper
07:15 PM perry_j1987: nope
07:15 PM perry_j1987: if you want to play with machine vision a pick n place with openpnp is what you'd want to play with
07:15 PM CaptHindsight: how about synchronized IO with extruder position?
07:16 PM perry_j1987: like what
07:16 PM perry_j1987: what do you have in mind you'd use that for
07:16 PM CaptHindsight: turn a valve on/off in real time?
07:16 PM perry_j1987: and do you mean extruder or the hotend
07:16 PM CaptHindsight: nozzle
07:16 PM CaptHindsight: the orifice where material is ejected
07:16 PM perry_j1987: you'd have to postprocess your gcode that was sliced to include features like that
07:17 PM CaptHindsight: perry_j1987: no, I'd just use Linuxcnc
07:18 PM CaptHindsight: for plug-n-play
07:18 PM perry_j1987: what 3d printing application would you need to turn a valve on and off
07:18 PM CaptHindsight: multi-materials, multiple nozzles
07:18 PM CaptHindsight: inkjet
07:19 PM W1N9Zr0: marlin does have velocity-dependant and synched pwm for controlling a laser, so you could probably abuse that?
07:19 PM CaptHindsight: high viscosity photoplymers
07:20 PM perry_j1987: ah right you're in that field
07:20 PM perry_j1987: you should delve into klipper a bit and see what you think
07:20 PM CaptHindsight: along with low viscosity fired from printheads
07:21 PM CaptHindsight: openpnp could have just used Linuxcnc and been done in days
07:21 PM CaptHindsight: then focused on building a delta
07:22 PM CaptHindsight: or gotten a mechanical engineer to help do that
07:22 PM W1N9Zr0: a PC and a mesa card cost more than a chinese arduino clone :D
07:23 PM W1N9Zr0: beaglebone/machinekit is a pretty good compromise though
07:24 PM CaptHindsight: the majority of the cost is the mechanical parts
07:24 PM CaptHindsight: not the controller
07:27 PM CaptHindsight: orangepi price is similar to the BBB and has a GPU powerful enough to run a GUI
07:31 PM W1N9Zr0: does it have a PRU equivalent?
07:31 PM CaptHindsight: yes
07:31 PM CaptHindsight: integrated open RISC processor
07:32 PM CaptHindsight: think I spotted one or two in the rockchip SOC's as well
07:33 PM CaptHindsight: Allwinners used in the OrangePi's have working firmware for the micros compatible with Linuxcnc already
07:36 PM W1N9Zr0: ah cool
07:37 PM CaptHindsight: https://ocnc.github.io/
07:39 PM CaptHindsight: but I'd suspect anyone using these in an industrial application is more cheap than anything else
07:53 PM W1N9Zr0: a pc and an fpga board makes sense for industrial use, but on a $200 3d printer, a 16mhz 8-bit arduino will have to do!
07:54 PM W1N9Zr0: it's really funny actually, the touchscreen upgrades you can get for 3d printers have a beefier processor than most cheap printers
07:54 PM W1N9Zr0: the touchscreen acts as the host and sends gcode to the printer instead of the printer firmware drawing on the screen
07:55 PM CaptHindsight: even for hobby, personally I'd rather be moving motors than coding for a year to save $50
07:55 PM CaptHindsight: I'd rather belt sand my nipples than write code
07:56 PM jdh: you can do both
07:56 PM W1N9Zr0: code a linuxcnc nipple sander component!
07:57 PM CaptHindsight: whatever happened to that FDM/FF printer challenge to speed thins up to faster than glacial print rates?
07:58 PM CaptHindsight: HP came up with Jet Fusion
08:00 PM CaptHindsight: https://ytec3d.com/forum/viewforum.php?f=8&sid=fa25690c4bd6600c0bf307ab8f7fb28d
08:00 PM CaptHindsight: they only reverse engineered 2 different printheads
08:01 PM CaptHindsight: and not much became of it
08:02 PM CaptHindsight: perry_j1987: does Klipper support 5-axis?
08:02 PM jdh: couple of years ago, someone at work went all in on 3d shit. bought tons of printers of all types, was going to revolutionize our mfg. now they are all gone and nobody speaks of them.
08:04 PM CaptHindsight: selling hype has been profitable to some
08:04 PM CaptHindsight: makerbot made a few hundred million
08:07 PM CaptHindsight: jdh: can't people see what thay can and can not do just by looking at the specs and the materials?
08:08 PM Tom_L: some need to be dazzled
08:10 PM W1N9Zr0: no 3d printer firmware supports more than 3 work axis + extruders. they'll do joint mapping/kinematics for dual-z, delta, scara, but none of them have rotary axis stuff afaik
08:11 PM W1N9Zr0: you can find some youtube videos of 4/5 axis 3d printers, but usually it's just a research project that's by now abandoned
08:11 PM CaptHindsight: or look at my machines
08:12 PM SpeedEvil: 5 axis (roll, pitch to +-45 say) might be real neat for smoothing layers
08:13 PM CaptHindsight: https://i.imgur.com/LOriL1y.png most of the work was on the laser micrometers
08:13 PM CaptHindsight: 5-axis inkjet/polyjet ^^
08:14 PM SpeedEvil: :)
08:15 PM SpeedEvil: Micron scale LASER rangers with ~1000Hz update rate for $10 would revolutionise so much
08:15 PM CaptHindsight: there is hardly any work if LinuxCNC is the controller
08:19 PM W1N9Zr0: actually i guess 5axismaker has a 3d printer head https://www.youtube.com/watch?v=w8Fl8L4yk8M the software for that looks really... interesting though
08:19 PM jdh: I could use something that would measure within 0.5mm over 3-4 meters. any suggestions?
08:20 PM Tom_L: uber long glass scale if you could find one?
08:21 PM Tom_L: they're bound to be out there
08:21 PM jdh: yeah, mag scale would also be ok. or even a servo + screw would be ok
08:22 PM CaptHindsight: mag scale with hall sensor will get you 0.5mm
08:23 PM CaptHindsight: laser printed paper scale and CDD head
08:23 PM jdh: slipped a decimal. I need 0.05mm
08:23 PM CaptHindsight: 2 thousandths
08:23 PM CaptHindsight: mag scale/tape
08:23 PM jdh: could probably get away with 4thou
08:24 PM CaptHindsight: laser or inkjet printed scale with CCD again
08:24 PM CaptHindsight: but will get dirty
08:25 PM jdh: I can spend real money
08:26 PM Tom_L: how accurate would some sort of laser ranger be?
08:26 PM Tom_L: maybe not the answer here
08:27 PM CaptHindsight: depends on how clean and how fast you ned to read
08:27 PM CaptHindsight: bbl, hardware closes in 40 minutes
08:27 PM jdh: read can be slow
08:27 PM jdh: will be relatively clean
08:28 PM jdh: one end fixtured, touch-off on the other end
08:28 PM CaptHindsight: back in an hour, I'll run some numbers
08:28 PM leorat: if you want definitive answers about klippers capabilities Kevin2 is the developer, you can find him in #klipper CaptHindsight
08:44 PM jymmmm: This is interesting... DC-DC converters factory direct, local warehouses, https://www.daygreen.com/collections/24v-to-12v-13-8v/products/24v-to-12v-20a-240w-dc-dc-step-down-converter-voltage-regulator?variant=7073362444321
08:44 PM jymmmm: free shipping
08:46 PM jdh: I bought some 2 amp din mount 24->12 last week. $60ish each
08:51 PM jymmmm: jdh: Not DIN, 5A $8USD https://www.daygreen.com/collections/24v-to-12v-13-8v/products/24v-to-12v-5a-60w-dc-dc-step-down-converter-voltage-regulator?variant=7073471528993
08:52 PM jdh: yeah. can't buy easily from odd places though
08:53 PM jymmmm: jdh: Need a PO ?
08:53 PM jymmmm: to buy
08:53 PM jdh: yep. and I can't easily issuea a PO to a new place
08:54 PM jdh: but, I can click through and buy a $60 one from Allied
08:54 PM jymmmm: that's sad when you think about it, lol
08:54 PM jymmmm: Just gimme a company CC and nobody will get hurt
08:55 PM jdh: I could save tons of money if I could just buy with a CC
08:56 PM Rab: jymmmm, wow, cheap.
08:56 PM jdh: I actually have a 3rd party I can write a PO to. They mark it up x% and buy it for us
08:56 PM jymmmm: Rab: and they have some high power ones too
08:56 PM jymmmm: jdh: oh gawd, that's even worse
08:58 PM jdh: yep. I just wanted to panel mount an 8" hdmi monitor. It ran off a 12v wall wart, but no AC in the cabinet, only 24v
08:58 PM jymmmm: MY last company CC was sneaky... it's under YOUR name and on YOUR credit. IF you didn't turn in your expense reports, you had to pay the bill yourself
08:59 PM jdh: mine is for travel only
09:00 PM jymmmm: My was for everything, except airline. Hotel, meals, misc parts, tools, etc. Vehicle/gas was a completely different card.
09:01 PM jymmmm: I liked / hated that job
09:04 PM jymmmm: MY boss was a dick, my bosses boss was cool as hell
09:07 PM jymmmm: Does it seem "reasonable" to offer batteries in 1KWH, 2KWH, 4KWH, 8, etc increments?
09:14 PM cradek: it's more normal to see them rated in amp-hour, but since batteries have a relatively fixed voltage over their discharge, watt-hour is also a reasonable way to express the capacity
09:15 PM jymmmm: cradek: I understand the WH isn't common convention, my inquiry is more to the (binary) 1, 2, 4, 8 unit values more thna anthing else.
09:18 PM jymmmm: as opposed to 1, 1.5, 2, 2.5, etc
09:18 PM jdh: perhaps more a function of cell size
09:19 PM jymmmm: jdh: Well when it comes to LiPo, only 7S (24v) is reasonable, 12V is iffy (3S or 4S)
09:20 PM jymmmm: LiFe is dead simple
09:23 PM jdh: dcb packs
09:23 PM jymmmm: I guess if I focused on 1, 2, 4, then I can make any combination I want,
09:24 PM jymmmm: jdh: Yeah, but in the KWH range
09:25 PM jymmmm: jdh: What got me started is my need to have battery power at night when the generator is off. But I cna't be the only one in this situation, and there are others that need power to run their pellet stoves, etc
09:27 PM jymmmm: So all those little portable solar generators just don't have the capacity to run all night
09:32 PM Tom_L: jymmmm, are you so remote you don't have reliable mains power?
09:33 PM jymmmm: Tom_L: After the wildfire, Electric company did a 5 day blackout intentionally due to fire risk.
09:33 PM Tom_L: ahh that's right.. i forgot about that
09:34 PM jymmmm: lugging a 56# battery in/out every day gets hold, lol
09:34 PM jdh: after they killed 84 people?
09:34 PM jymmmm: jdh: 94, and displaced 51,000, and burned 150,000 acres
09:35 PM CaptHindsight: jdh: back, can you use a mag tape and read head? 2mm pole pitch tape gets you to a few microns for <$100 for the head
09:37 PM jdh: CaptHindsight: needs to be mostly operator proof. I could spend a few tens of thousands
09:37 PM CaptHindsight: https://sra-measurement.com/high-accuracy-magnetic-linear-tape
09:39 PM CaptHindsight: https://www.baumer.com/us/en/product-overview/distance-measurement/laser-distance-sensors-/c/28laser micrometer few microns easily to 13 meters
09:42 PM Tom_L: not found
09:42 PM jdh: that link doesn't work. I don't see anything long range
09:42 PM CaptHindsight: jdh: the 4m version was only accurate to a few mm, let me check...
09:43 PM CaptHindsight: mag tape is lowest cost and fast
09:43 PM jdh: probably the best format anyway. I need a screw drive anyway
09:44 PM Tom_L: 4m is pretty long for a screw
09:45 PM jdh: well, doesn't have to be a screw. any linear motion is fine.
09:46 PM jdh: still up in the air at the moment. definitely need to measure a tube. might need to cut one accurately
09:46 PM Tom_L: that belt over belt system might be an option...
09:47 PM Tom_L: https://www.bell-everman.com/products/linear-positioning/servobelt-linear-sbl
09:48 PM jdh: that looks pretty cool
09:54 PM _unreal_: ve7it, I'm going to have to figure some othre way to interface with the driver boards....
09:54 PM _unreal_: I dont know what the issue is?
09:55 PM _unreal_: and I still can not find the PSU for the only computer I own that has a real serial port
10:07 PM CaptHindsight: jdh: https://www.pepperl-fuchs.com/usa/en/classid_53.htm?view=productdetails&prodid=53236
10:08 PM CaptHindsight: Resolution 0.1 mm , adjustable (0.004")
10:36 PM W1N9Zr0: CaptHindsight: what do you use to generate gcode for your 5-axis printer?
11:23 PM -!- #linuxcnc mode set to +v by orwell.freenode.net