#linuxcnc Logs

May 20 2017

#linuxcnc Calendar

12:04 AM Tom_L: i think it's 'omron-ish'
12:07 AM LeelooMinai: Kind of like the shape better than those other ones - is small and should be easy to mount just by tapping two holes.
12:07 AM LeelooMinai: It's NO though - not sure if that's a good idea.
12:08 AM XXCoder: or just one hole for some kinds of sensors
12:08 AM XXCoder: hall sensor theres ones thats screw body just need one hole bolt it in done
12:54 AM BipolarBear is now known as ApocalypseCow
12:55 AM Crom: /list -yes
01:36 AM Crom: hmmm with all my router problems... I seem to have used all my ethernet cables... I have to find another for the arduino
02:09 AM Deejay: moin
02:30 AM IchGucksLive: morning from germany
02:32 AM XXCoder: hey
02:34 AM IchGucksLive: XXCoder: hi i came in yesterday to the workplace with lucky eys
02:35 AM IchGucksLive: as there where even almost all parts on the table to build 5 mashines
02:35 AM IchGucksLive: but ended up with only 1 moving at the end
02:35 AM XXCoder: what was missing?
02:35 AM IchGucksLive: the treads
02:35 AM IchGucksLive: almost every needed to be made
02:35 AM XXCoder: ah so it couldnt move
02:36 AM IchGucksLive: and no mashine with left right mode
02:36 AM IchGucksLive: no the M6 M4 M4 ones in the part to hold the screws
02:39 AM XXCoder: ahh
02:43 AM IchGucksLive: i nightmare
02:43 AM IchGucksLive: a
02:44 AM XXCoder: in least once you have those its easy fix
02:50 AM IchGucksLive: but hard work I will not do it
02:51 AM IchGucksLive: hoping that if arriving on Wendsday it will be fixed as 50 students can do this easy
02:51 AM XXCoder: yeah
02:55 AM IchGucksLive: XXCoder: i got a image
02:56 AM XXCoder: yeah? link if any?
02:56 AM IchGucksLive: http://heimwerkermarkt-tretter.de/bbs_R_we.jpg
02:57 AM IchGucksLive: look at the old school mashine
02:57 AM IchGucksLive: there yoiu learn the BASICS
02:57 AM IchGucksLive: massive steel
02:58 AM IchGucksLive: see the stock pile of Mashine tables to be made
02:58 AM XXCoder: very interesting
02:58 AM XXCoder: yeah
02:58 AM XXCoder: whats pile of white sheets for? test milling parts?
02:58 AM IchGucksLive: no this is the Mashine Table
02:58 AM IchGucksLive: Toop shite is drilled
02:58 AM XXCoder: ahh
02:59 AM IchGucksLive: i got a can of tread oil as you see to let the tread trill not got to hot
02:59 AM IchGucksLive: ;-)
02:59 AM IchGucksLive: :o
02:59 AM XXCoder: yeah
02:59 AM IchGucksLive: as 115 treads per mashine
03:00 AM IchGucksLive: 12 mashines to be build
03:00 AM IchGucksLive: your tread drill will love to see oil
03:00 AM IchGucksLive: on Alloy
03:01 AM IchGucksLive: the with one is hardPVC pos 5 on the drawinge you recived
03:02 AM IchGucksLive: white
03:02 AM IchGucksLive: ok im off to the garden planting good food stuff
03:03 AM XXCoder: later
05:14 AM jthornton: morning
05:15 AM XXCoder: hey jthornton
05:21 AM jthornton: well the chickens are finally sleeping on the roost
05:21 AM jthornton: funny 2 on one end and 4 on the other end
05:22 AM XXCoder: excluded!!
05:22 AM XXCoder: heh
05:22 AM XXCoder: who knows with them chickens
05:22 AM XXCoder: I saw 2 chickens stop catfight
05:22 AM XXCoder: in least i remember cats lemme find
05:22 AM XXCoder: oh rabbits but yeah https://www.youtube.com/watch?v=_o-btjajKaY
05:24 AM XXCoder: meanwhile... https://www.youtube.com/watch?v=WANZBs8Za0Q
05:42 AM newcnc22: Hello, how do I do it when I want the path again with Z -0.1 without using the jog and the homing? Or in other words can I type in a command that's shifting the homing -0.1?
05:43 AM archivist: I use subroutines for repeated code
05:44 AM newcnc22: Then I have to edit the G code..?!
05:44 AM newcnc22: I wanted to avoid that. And I'm searching for the convenient way...
05:45 AM archivist: you need to read the manual for your cam then
05:45 AM archivist: or ask a better question
05:48 AM newcnc22: Run the path again with just Z -01 ?!
05:49 AM XXCoder: wow
05:49 AM XXCoder: been looking for old ti-84s because I want second one
05:49 AM XXCoder: but most of em is pretty abused
05:50 AM XXCoder: mine is over15 years old and ticking fine
05:50 AM archivist: usually you can set the depth per pass of a path it it will auto magically do what you want
05:51 AM newcnc22: Again this requires to edit the G code...
05:52 AM archivist: no, it is learning your cam
05:52 AM newcnc22: No simple command to shift my Z axis homing
05:52 AM archivist: I am not sure you are asking the right questions
05:53 AM XXCoder: I can't figure that question too
05:53 AM archivist: you want to touch off Z ?
05:53 AM XXCoder: I think he wants to change part coord -.01
05:53 AM XXCoder: er -.1
05:53 AM XXCoder: so it cuts lower?
05:53 AM newcnc22: I want to run the same path with a deeper Z
05:53 AM XXCoder: if that is the case it is pretty strightforward, just edit part coord z to be .1 lower
05:53 AM archivist: that is a plain touch off
05:54 AM XXCoder: thought so
05:54 AM XXCoder: archivist: may be impossible if part top is all cut off
05:54 AM XXCoder: so its just edit part coordite. newcnc22 you use g54 coord?
05:54 AM archivist: you can touch off and set an amount to move
05:54 AM XXCoder: arch I think he already touched off and cut
05:55 AM XXCoder: and want to recut lower
05:55 AM newcnc22: aha.. ok...
05:55 AM newcnc22: I will try that...
05:55 AM XXCoder: walk it in! always do that if change coord
06:14 AM newcnc22: Yes, that was it... thank you archivist...!!!
06:29 AM Tom_L: jthornton, finally got the update installed
06:30 AM XXCoder: hey jthornton did you see 2 videos? you timed out so I wasnt sure heh
06:31 AM jthornton: yea I finally saw them
06:31 AM jthornton: just need a test from devel now tom
06:32 AM XXCoder: funny how diffeent those species are.
06:32 AM XXCoder: poor cats
06:39 AM IchGucksLive: hi
06:39 AM XXCoder: welcome back
06:39 AM IchGucksLive: just brief
06:40 AM IchGucksLive: checking weather state to go for a bycicle ride
06:42 AM IchGucksLive: bye
06:44 AM archivist: strange....
06:45 AM XXCoder: what is
06:47 AM archivist: enter irc leave irc
06:47 AM XXCoder: yeah
06:47 AM XXCoder: but then everyone is weird in something
06:47 AM XXCoder: take it from me, person who is weird in many ways
07:03 AM jym: understatement of the century
07:03 AM * XXCoder bows
07:03 AM XXCoder: I bought a ti-84. another one for home
07:03 AM XXCoder: nothing better than it and I'm annoyed when I need one and one is all way out at work
07:04 AM jym: what do you need it for?
07:04 AM XXCoder: calculting stuff of course
07:05 AM jym: seriously
07:05 AM XXCoder: it's a calculator
07:05 AM XXCoder: not iphone
07:05 AM jym: Yes, and they have 99¢ ones, why a ti84?
07:05 AM malcom2073: You can do complicated calulations!
07:06 AM malcom2073: jym: Have you ever used wolfram alpha?
07:06 AM jym: malcom2073: yeah
07:06 AM XXCoder: $1 calculators is good for using as shims
07:06 AM XXCoder: otherwise shit
07:06 AM malcom2073: jym: Same reason to use that vs windows calculator
07:06 AM jym: XXCoder: You still haven't justified the t184
07:06 AM XXCoder: I see no need to justify it to you lol
07:07 AM jym: XXCoder: Not to me, it's specific usage
07:07 AM XXCoder: it's a calculator
07:07 AM XXCoder: not iphone
07:07 AM jym: right so is a 99¢ one or one on your phone
07:07 AM XXCoder: nah those are so limited
07:08 AM jym: ok, so it's a toy for you, got it.
07:08 AM XXCoder: coworker of mine got a MUCH newer version
07:08 AM XXCoder: and ehh
07:08 AM Vitran: I use one of the engineering calculators. They are much nicer than the $1 ones and the iphone style ones
07:08 AM jym: ti's are shit compared to hp
07:09 AM Vitran: I also have a reverse polish, but I like the engineering ones more
07:09 AM Vitran: Casio fx-991MS
07:10 AM jym: hp is 5x faster than TI, casio are nice, but break too easily.
07:10 AM Vitran: Never broke one in my years. Cheap and light. Don't care if they get dropped.
07:11 AM XXCoder: ti-84 can take pretty good beating
07:11 AM XXCoder: its screen thats pretty sensive
07:11 AM XXCoder: ebay has many of em with damaged screen
07:13 AM jym: I had the calibrate a spectrum analyzer every morning, it would take 5 seconds on an HP calc, and 24 seconds on a ti.
07:14 AM jym: May not seem like much, but when you're waiting for a calculator it made a difference
07:15 AM XXCoder: it does come down to user case
07:15 AM archivist: I have never needed a calculator to calibrate a spectrum analyser
07:17 AM jym: archivist: You never calibrated against a $160K reference each morning
07:18 AM archivist: I dont think the price of a reference makes you need to calculate
07:18 AM jym: archivist: no, but the precison does
07:19 AM archivist: you are within spec or not
10:17 AM Vitran: I got a dumb question on encoders. On the wiring diagrams I have wires A/B/C/D and +V and Gnd wires. The 7i77 has QA /QA QB /QB IDX /IDX as well as GND and +V
10:18 AM Vitran: What are the IDX for?
10:19 AM sync: some encoders have a single line so you know when you have done a full revolution
10:19 AM Vitran: So I don't use them then?
10:19 AM Vitran: Doesn't seem it
10:20 AM Vitran: I also have servos with PA/PA, PB/PB, PC/PC, +V and GND
10:21 AM sync: you don't need to use them
10:24 AM Vitran: This is what I am looking at: http://imgur.com/JYK7ZBp
10:31 AM archivist: where you see a pair one with a bar over it means a differential pair
10:32 AM archivist: more noise immunity
10:33 AM Vitran: So how do I wire them?
10:35 AM roycroft: i've determined that a cork gasket on my headstock lid will eliminate about 90% of the vibratory noise that my lathe produces
10:35 AM roycroft: that might quiet it down enough that i don't need to apply any dynamat to the chip pan
10:35 AM SpeedEvil: roycroft: Imagine how much it'd help if you covered your whole lathe and workshop in cork, and wore a cork suit.
10:36 AM archivist: Vitran, see manual for encoder and/or read its label more carefully
10:37 AM archivist: Vitran, I dont see a D on your diagram, where are you getting that from
10:37 AM roycroft: i'm generally not one for brute force fixes
10:39 AM Vitran: archivist the turret has the ABCD while the axis encoders have the differential pairs
10:40 AM archivist: then turret is not the same, that is a 16 position code
10:40 AM sync: the turret probably just has a bcd encoder
10:40 AM sync: to tell which tool is currently in pos
10:41 AM archivist: BCD, Gray or binary
10:41 AM archivist: gray is the most sensible for that
10:41 AM Vitran: Knowing that the line means differential pair would have taken forever to find out. Thanks
10:42 AM sync: it doesn't really mean differential pair
10:42 AM sync: it just means inverted
10:43 AM archivist: ABCD will be going to your turret change code however you write it (classic ladder or something else)
10:43 AM archivist: differential is what an inverted pair are
10:44 AM sync: yes, but the line doesn't mean diff pair
10:44 AM sync: used in combination with a non inverted signal they both make a diff pair
10:44 AM roycroft: hmm
10:45 AM roycroft: starrett just informed me that today is world metrology day
10:45 AM roycroft: so go measure things!
10:48 AM archivist: roycroft, some measuring machine p0rn http://www.collection.archivist.info/archive/DJCPD/PD/2015/2015_04_07_Sigma/IMG_1873.JPG
10:51 AM Deejay: museum news. 1970-71... ah yes ;)
10:51 AM roycroft: no time for that now
10:51 AM roycroft: students arriving shortly, and i have to get out to start up the brew system
10:51 AM roycroft: i'll check on it later
10:52 AM archivist: roycroft, or a better article on it http://www.archivist.info/cnc/screw_error/lamp_screw.php
12:45 PM IchGucksLive: hi
12:46 PM IchGucksLive: it is BQ here
12:48 PM IchGucksLive: GN8 from germany smelling grilled meat
01:37 PM Guest105: How do I add BC axis to Linux cnc with the Mesa6i25 and 7i76 and place to get started
02:08 PM Crom: Guest105: linuxcnc/configs/ is the root for config files.. if you have a working XYZA config with the mesa.. I'd make a new dir MESAXYZABC copy all the current config directory into that and start renaming files to match dir name and edit the ini and hal files to get B & C configured
02:09 PM Guest105: Cheers Will give it a GO THanks
02:12 PM Crom: Guest105: no problemo
02:12 PM Crom: you can then start linuxcnc with linuxcnc /path/to/MESAXYZABC.ini
02:13 PM Guest105: I am a total NEWBEE here coming off of Mach
02:15 PM Guest105: Once you edit the files I take if you run PncConf Wizard it will delete all your changes ???
02:15 PM Crom: there is a learning curve... linuxcnc you have more access and you need to get into it more than Mach3
02:16 PM Crom: make another dir... copy everything into there and cp original.stepconf newdirname.stepconf
02:16 PM Crom: and run pncConf on that new dir...
02:16 PM Guest105: Just tonight got MINT 18.1 and compiled from source
02:17 PM Crom: nice.. I'm running Debian 8.7 and linuxcnc 2.8.0-pre1 on 4.913-preempt kernel
02:17 PM Guest105: same kernel for me
02:17 PM Crom: I'm bleeding edge...
02:18 PM Guest105: what is also amazing is my Dell Touchscreen works ASLO WOW\
02:18 PM Guest105: I am just BLEEDING
02:19 PM Guest105: I was reading about not using Nvidia Graphics card
02:19 PM Guest105: I am using shared Memory at the moment
02:19 PM Guest105: is it stillthe case not to use Nvidia
02:21 PM Crom: no idea.. I don't have any
02:22 PM Guest105: what do you use
02:22 PM TurBoss: the nvidia problem are the propietary driver not the card itsef
02:22 PM TurBoss: if I did understand
02:23 PM Guest105: yep
02:23 PM TurBoss: ok
02:23 PM Crom: my linuxcnc machine is a mini-box.com with an intel atom 1.4ghz itx board
02:23 PM TurBoss: j1900?
03:01 PM TurBoss: I have a question
03:01 PM TurBoss: what can cause this lines
03:01 PM TurBoss: https://jauriarts.org:8448/_matrix/media/v1/download/jauriarts.org/SbVPNhblekyzVWTmSgIillAm
03:02 PM TurBoss: its a finish pass
03:08 PM TurBoss: can be the 3d model or the machine itself
03:25 PM LeelooMinai: Imo that's a sign from god
03:29 PM DrippityDrops: Anyone set up for making custom vise jaws? I got this machine which uses 6 chucks (two jaws per) and I need a supplier for custom jaws. So every time I put a new job on it, I would need something like 12 custom collet pads made to hold parts. The jaws would generally be 1x1x1 roughly. Pm if this sounds like you.
03:32 PM DrippityDrops: TurBoss: I cant see the finish from that photo but are you familiar with "tramming the head"?
03:34 PM JT-Shop: gregcnc: thanks
03:34 PM JT-Shop: Tom_L: what is it?
03:39 PM DrippityDrops: TurBoss: if you can get a much sharper zoomed in area of the problem I suspect people could tell you right away. I am assuming the mill spindle is not perpendicular to the mill table. Which means the cutter may be cutting deeper on the 3oclock side than it is on the 9oclock side when top facing a part
03:41 PM DrippityDrops: if you rotate the workpiece 90degrees and rerun the job those lines may look totally different meaning your head is off either in X or Y but probably both.
03:41 PM XXCoder: DrippityDrops: likely yeah
03:45 PM XXCoder: TurBoss: your picture dont seem to load
03:46 PM TurBoss: sorry was afk
03:50 PM XXCoder: TurBoss: so did you check DrippityDrops suggestions?
03:50 PM XXCoder: your website dont seem to work for me so I can't see it still
03:51 PM XXCoder: drippy is very likely to be correct, lines is almost always caused by tool not being T to surface so as it cuts in rows it cuts it in little slopes
03:52 PM XXCoder: tramming it to be as close as possible would cure that.
03:52 PM TurBoss: I have to
03:53 PM TurBoss: I will ipload the pic somewhere
03:54 PM TurBoss: XXCoder : here : http://i.imgur.com/KjLxgoE.jpg
03:54 PM XXCoder: little bit hardc to see
03:55 PM XXCoder: suggest get more light so apenture time is much shorter so it is more sharper image and less blurry
03:57 PM DrippityDrops: it looks like the head is off in both directions,
03:57 PM DrippityDrops: I inverted colors and it seemed more pronounced on the crosspaths
03:58 PM XXCoder: think so but quite hard to see
03:58 PM DrippityDrops: looks like waffles
03:59 PM TurBoss: I'm goin to take a better pic
03:59 PM XXCoder: thanks
04:00 PM DrippityDrops: XXCoder: I got my automatic tapping unit done
04:00 PM XXCoder: taps stuff nicely eh
04:00 PM DrippityDrops: encoder on z axis of spindle and servo/encoder on the rotation and its just like butter
04:01 PM XXCoder: Nice
04:01 PM DrippityDrops: the machine is really ugly right now though because it has two linuxcnc controls attached to it and another control unit for the main machine built in the 70's
04:01 PM XXCoder: I got hall sensor replacement but couldnt get enough energy to work on it
04:02 PM DrippityDrops: yeah, I took the day off
04:02 PM DrippityDrops: but im going in later so i guess im just potponing
04:02 PM DrippityDrops: opostponing
04:02 PM DrippityDrops: jeesh
04:03 PM DrippityDrops: the problem with the tapping unit is that it doesnt use gcide
04:03 PM DrippityDrops: dcode
04:03 PM DrippityDrops: oh whats wrong with my fingers
04:03 PM DrippityDrops: Gcode*
04:03 PM XXCoder: some days I cant type worth shit
04:04 PM TurBoss: http://i.imgur.com/2yWEbQJ.jpg
04:04 PM DrippityDrops: its just set up as in jog mode and i dont know how to run it otherwise
04:04 PM TurBoss: the horizontal lines
04:04 PM TurBoss: Iknow its the spindle
04:04 PM TurBoss: but the others?
04:04 PM XXCoder: ripple lines and lines
04:05 PM TurBoss: i theory its a flat surface
04:05 PM DrippityDrops: you need to get your lighting right or maybe rub some dirt into the lines so we can see the contrast. but yeah, the head needs trammed, might as well start there
04:05 PM XXCoder: indeed
04:05 PM TurBoss: ok thanks
04:05 PM TurBoss: and the spindle is blended
04:05 PM XXCoder: theres special 2 dial indictor method to do that
04:05 PM TurBoss: :D
04:05 PM XXCoder: but you can do it with just one
04:05 PM TurBoss: ok
04:06 PM XXCoder: attach it to arm attached to spindle
04:06 PM XXCoder: rotate it and compare sides zeros
04:06 PM XXCoder: say if one side is 0 and other is -.01mm
04:06 PM XXCoder: it needs adjustment a little more
04:06 PM TurBoss: fine
04:07 PM XXCoder: till both sides has very tiny difference
04:07 PM XXCoder: then do it again for front-back
04:07 PM XXCoder: then side to side again
04:07 PM TurBoss: first i should do it with the table :D
04:07 PM XXCoder: basically you want tiny error all way around.
04:08 PM XXCoder: longer the arm the easier if I recall right. DrippityDrops right?
04:08 PM DrippityDrops: it takes time but its worth it and when switching from long and short tooling as your spindle quill will become drastically off over longer depths
04:08 PM DrippityDrops: the longer the arm the more accurately you can tune it in and the more clearly you can see that it is off
04:09 PM gregcnc: it's a good idea to check that the axis is square to the table first
04:09 PM TurBoss: sure will do
04:09 PM DrippityDrops: I prefer around 5" long
04:09 PM XXCoder: https://i.ytimg.com/vi/GibhWjWirfA/hqdefault.jpg
04:09 PM TurBoss: yes good
04:09 PM XXCoder: gregcnc: nice idea but how?
04:10 PM gregcnc: traverse the axis with an indicator against a square on the table
04:11 PM XXCoder: 123 block would work for that I guess
04:11 PM DrippityDrops: wouldnt that be correct if your head was trammed?
04:11 PM gregcnc: no
04:11 PM gregcnc: well not necessarily
04:11 PM XXCoder: DrippityDrops: yes and no, as it corrects some problems but not some problems
04:12 PM XXCoder: spindle might be T to surface but rails movement is not
04:12 PM gregcnc: if you have a bridgeport with was built correctly then you only need to tram the spindle
04:12 PM LeelooMinai: What I did was, I put an indicator arm into the collet, then attached an indicator to it, so I could rotate the whole thing with the spindle by hand, then put a small surface plate I have on the table and indicated to that - this kid of guaranteed that the axis of the spindle is perpendicular to the XY plane, and required no special jigs really.
04:12 PM gregcnc: if you build your own you must tram the axis as well
04:12 PM XXCoder: bottom up tuneup means have to make sure rails are nicely aligned first then spindle T to surface
04:12 PM DrippityDrops: yeah I suppose all my tramming experience is from a bridgeport
04:13 PM XXCoder: my cnc router is still untrammed lol
04:13 PM DrippityDrops: I never considered having control over the slides
04:13 PM TurBoss: my machine is fixed bridge
04:13 PM XXCoder: im lucky its close enough as I have no tools to check it
04:13 PM gregcnc: use shims if you have to
04:13 PM gregcnc: if only routing and not drilling or side milling deep, axis squareness is less of an issue
04:14 PM XXCoder: XY is pretty major, Z not so much
04:14 PM XXCoder: for cnc router
04:14 PM DrippityDrops: the mill I always use has always been worn and I usually surface grind all critical dimensions im sure a good mill guy would be disapointed in what I use everyday :P
04:15 PM gregcnc: if Z axis is not square, XY position changes with Z travel, even if Z is perpendicular to the table
04:16 PM DrippityDrops: ^
04:16 PM gregcnc: should read even if spindle is perpendicular
04:17 PM DrippityDrops: that can be important when your are switching from short spot drills to drills or doing deep slots
04:19 PM sync: well, there are different geometric considerations to take
04:20 PM DrippityDrops: and rotation of earth
04:20 PM DrippityDrops: altitude and so forth
04:20 PM gregcnc: tides
04:20 PM DrippityDrops: oh right yeah the moon cycles
04:21 PM XXCoder: and jupier position also. hey if it affects holoscopes.. :P lol
04:22 PM * TurBoss has to leave
04:22 PM TurBoss: bye
04:22 PM sync: gravity is a suprisingly important factor :P
04:22 PM XXCoder: car on road by your house pulls more gravoty pull on you than juper. (cant spell that damned planet name today it seems)
04:45 PM JT-Shop: bout got that chicken door programmed lol
04:46 PM XXCoder: nice
04:46 PM XXCoder: playing nes game lol
04:46 PM XXCoder: console with tiny tv
04:46 PM JT-Shop: got a manual override for the photo cell
05:06 PM JT-Shop: what can you cut a circuit board with? I have some project boards but only need two rows of holes
05:07 PM sync: a hacksaw works
05:09 PM archivist: perf board? , bend against fingernails work the crack along the 3rd row
05:13 PM JT-Shop: https://www.amazon.com/gp/product/B01IONQQ3Y/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
05:13 PM JT-Shop: those
05:13 PM Duc_mobile: pcw_home: having a few difficulties setting up a new 6i25 to work with my upgraded system. Used to have a 5i25/7i77 setup. PC died so I switched to a 6i25 system. Flashed with 5i25_7i77x2.bit file but unable to see the 7i77 pins when doing a show pin
05:14 PM JT-Shop: got field power on?
05:14 PM JT-Shop: archivist: they are pretty thick
05:14 PM archivist: JT-Shop, I would saw that along a row
05:15 PM JT-Shop: ok I'll give that a whirl
05:15 PM pcw_home: also check 5V jumper options on both 6I25 and 7I77
05:15 PM Duc_mobile: I believe so. 4 yellow leds and the red one for cr 16
05:15 PM Duc_mobile: 24v to the field power
05:16 PM JT-Shop: archivist: my little tiny band saw did a nice job of cutting it
05:16 PM pcw_home: Also, did you power cycle or --reload after flashing firmware?
05:17 PM Duc_mobile: 6i25 is set for w2 and w3 down. external 5v to 7i77. Power cycling has been down
05:17 PM Duc_mobile: done
05:18 PM Duc_mobile: is there a such thing as 6i25 bitfiles or just 5i25
05:18 PM Duc_mobile: pci clock was set to 66 mhz on the 6i25
05:18 PM pcw_home: There are 6I25 bitfiles but normally the 6I25 just emulates a 5i25
05:18 PM pcw_home: set it to 33 MHz
05:19 PM pcw_home: (in other words leave the jumpers in their default 5I25 emulation places)
05:19 PM Duc_mobile: just changed booting up now
05:21 PM Duc_mobile: that was it
05:21 PM Duc_mobile: ive been pulling my hair out for a few hours. by the way a dell xps tower will not run a 5i25 or even boot the computer
05:22 PM pcw_home: I've seen some computers that dont like 5I25s, not sure why
05:24 PM pcw_home: seems random (and infrequent)
05:25 PM pcw_home: If a common low cost MB had the issue, I would buy one and try and figure out whats up
05:28 PM Duc_mobile: stupid internet
05:29 PM pcw_home: 5i25 bitfiles wont work on a 6I25 at 66 MHz because they are compiled to meet timing at 33 MHz so are likely to be flaky at 66
05:32 PM Duc_mobile: so any performance diffence
05:40 PM pcw_home: a fraction of a usec per access, not important for LinuxCNC
05:41 PM Duc_mobile: and my mill rarely sees above 30 ipm anyways
05:41 PM pcw_home: thats crawling...
05:41 PM Duc_mobile: thank you for the help. This is why mesa gets my money each time
05:41 PM Duc_mobile: its a old boss 5 that machines alot of tool steel and I dont have the horsepower behind it
05:49 PM pcw_home: I'll have to mention in the manual that you should not try to use 5I25 bitfiles at 66 MHz
05:58 PM Duc_mobile: so where does one find the 6i25 files. That was one thing I could never locate
06:20 PM JT-Shop: ok I'm happy about the chicken door logic so install tomorrow!
06:21 PM Deejay: gn8
06:25 PM pcw_mesa_ is now known as pcw_mesa
06:27 PM JT-Shop: say goodnight Gracie
06:38 PM dioz: i'm in calgary
07:12 PM andypugh: “chicken door logic”? Methinks you are over-thinking this.
07:14 PM andypugh: Harmonic-drive 4th-axis is now done. Needs painf and electronics. https://goo.gl/photos/3gA6m3V7NdRnJtc48 and https://goo.gl/photos/wjHa2ij9SQ5Q2WxPA
07:15 PM andypugh: painf->paint
07:15 PM Roguish: what's the reduction?
07:15 PM andypugh: (It has a D1-4 nose to match the lathe: https://goo.gl/photos/AG1psCHknGRGxt3u9
07:16 PM andypugh: 160:1 I think. Should do 6 rpm.
07:16 PM andypugh: (60 rpm)
07:16 PM Roguish: very pretty
07:16 PM malcom2073: Nice andypugh, you get that casted?
07:18 PM andypugh: Yes. £60 per casting. I made few. https://goo.gl/photos/5uCXVNAx4mGFw9M26
07:18 PM malcom2073: That's not bad at all
07:19 PM andypugh: By which I mean, I had a few made. At £60 I can’t see it as worth the trouble to set up to do castings.
07:19 PM malcom2073: Right heh
07:20 PM andypugh: This is the foundry: https://plus.google.com/117843202793672038457 Unlike most he _prefers_ one-offs and small runs.
07:21 PM malcom2073: You just give them a foam/wax piece?
07:21 PM malcom2073: That's convenient
07:21 PM andypugh: No, you give him a wood/resin pattern
07:22 PM enleth: andypugh: did you have to account for shrinkage in the pattern design yourself?
07:23 PM SpeedEvil: andypugh: did you make the harmonic drive?
07:23 PM SpeedEvil: Or is this just a housin
07:24 PM andypugh: He does a lot of work for friends of mine who restore vehicles, here is a very good example: http://hmvf.co.uk/forumvb/showthread.php?13514-WW1-Thornycroft-restoration&p=486322#post486322
07:25 PM andypugh: enleth: yes. The pattern design and shrinkage is my job, I need to make patterns that can be pulled out of sand, and any core-boxes needed. The foundry man handles the runners, risers and gates.
07:27 PM andypugh: SpeedEvil: The drive is a Gorminc Drive FHA-25B. It’s a servo motor, harmonic drive and huge crossed-roller bearing all in a package. Perfect 4th-axis in a single unit. eBay is full of FHA-25C which are the same but with more difficult commutation.
07:27 PM SpeedEvil: Hmm
07:28 PM andypugh: Gorminc->Harmonic
07:28 PM SpeedEvil: Ah yes.
07:28 PM SpeedEvil: 'cheap' from the perspective of harmonic drives.
07:28 PM SpeedEvil: :)
07:30 PM andypugh: Mine is identical to this one, except I got the plugs on the wires, and got it for £300. http://www.ebay.co.uk/itm/1pc-used-HD-motor-FHA-25B-3015-E150C-SP-/142223984581?hash=item211d35c7c5:g:ydEAAOSwJ7RYYJHO
07:31 PM jdh: what are you driving it with?
07:31 PM andypugh: You need to set up an eBay watch list and buy ones that are affordable
07:31 PM andypugh: jdh: I am going to use an STMBL
07:31 PM SpeedEvil: What order of magnitude rpm and Nm? I note it's 40W
07:32 PM SpeedEvil: Most of the uses I'd want to use a harmonic drove for alas, I'd really want about eight.
07:33 PM SpeedEvil: I've been wondering about belt-harmonic drives.
07:33 PM SpeedEvil: tootherd
07:33 PM andypugh: SpeedEvil: something like 230Nm and 50 rpm. But also 4.9kN radial load, 14.7kN axial load and 370Nm moment load.
07:34 PM Duc_mobile: andypugh: another good unit to use comes from www.nabtescomotioncontrol.com The RV series units can be had for about $200
07:34 PM Duc_mobile: purchased two new units off ebay. Normally used on fanuc robots
07:35 PM andypugh: Cycloidals are fun too.
07:35 PM Duc_mobile: can take a large load also
07:35 PM andypugh: Staubli robots are built round a set of FHA actuaatos.
07:37 PM andypugh: I did come up with a reduction drive of my own, that folk like us could make, but didn’t actually build it: https://www.youtube.com/watch?v=VrvwlPxRhKU
07:38 PM SpeedEvil: hmn
07:38 PM andypugh: (You have to imagine that all the off-the-shelf ground pins are present.
07:38 PM sync: oh, those are actually acceptably priced
07:38 PM Duc_mobile: little suprised the harmonic drive is only 40 arc/sec
07:40 PM sync: well, you can get them in different setups, but 40" is ok tho
07:40 PM sync: my rotary is only about 5 times better
07:42 PM Duc_mobile: Would like to try the new ball bearing type drives
07:45 PM Duc_mobile: https://www.youtube.com/watch?v=VgMackSNN9Q
07:46 PM sync: the idea is not really new
07:46 PM sync: a lot of rotaries do it the other way around
07:48 PM SpeedEvil: The balls are free to rotate?
07:49 PM SpeedEvil: I guess they must be, or they'd rapidly be not-balls
07:50 PM Duc_mobile: no clue I've only taken about the brass worm gear type
07:51 PM Cromaglious_: sheeshz... had to sit down and figure out how to measure and cut out full circle skirts...
07:52 PM Cromaglious_: There is 2 formula's... if the length on 1st is long than than 1/2 your fabric width, you have to go with second formula...
08:00 PM ApocalypseCow is now known as insomnia
08:00 PM Cromaglious_: ((waist + 2 + (6 * .625)) / pi() / 2)-.625 = upper radius, drop + upper radius + (2*.625) = outer radius; if outer radius < width of single folded fabric, then layout 90 degree. cut out, flip, lay cut out on fabric, cut second (actually 2 pieces) ; else layout for 45 degrees add .625 on both measures and cut
08:02 PM Cromaglious_: I could figure the trig for what actually I need to add... .625 is close enough
08:12 PM andypugh: Duc_mobile: There is a neat design of recirculating ball worm. The bizarre thing is that is was developed in a medical urology department. http://urobotics.urology.jhu.edu/projects/BW/ The balls recirculate through a channel in the worm.
08:14 PM LeelooMinai: This is patented too - sad.
08:17 PM LeelooMinai: Not sure why since if you ask an engineer to "make a worm transmission using balls", this is the first arrangement that they will come up with probably.
08:20 PM CaptHindsight: makes sense balls are balls
08:23 PM enleth: there's a joke somewhere in there with the urology department and an invention related to balls
08:26 PM sync: well, patenting something doesn't mean anything
08:26 PM sync: actually trying to enforce it is the interesting part
08:27 PM LeelooMinai: Hmm, so, I am jogging around, while re-aligning my axis again after I had z-stepper damaged, and I think it stalls due to some resonance at some frequencies now - usually happens close to 50 mm/s - I think I read somehwere that steppers even in perfect condition, have some problematic speed range where they can resonate? So maybe this one now just has this amplified?
08:29 PM LeelooMinai: If this is due resonance, I wonder, if I attached something to the rear axle, something like a dampener if that could influence the resonance point in any way.
08:30 PM LeelooMinai: A rubber ball or something:)
08:30 PM jdh: hockey puck
08:31 PM jdh: could just be bad accel also
08:31 PM LeelooMinai: jdh: Hmm... I just relized that I am in Canada and probably I can buy a hockey puck around here somewhere:)
08:32 PM LeelooMinai: I could use them for many things when I think about it - say as anti-vibration devices for machines, etc. I wonder how much they are.
08:33 PM LeelooMinai: lol, $1 - I need to buy some.
08:33 PM LeelooMinai: I wonder if they have uniform construction or something inside is harder.
08:35 PM jdh: I actually bought hocky pucks at canada tire last time I was in .ca
08:35 PM LeelooMinai: "Hockey Pucks - How it's made - QNHL.com - YouTube"
08:35 PM LeelooMinai: Here I go:)
08:41 PM LeelooMinai: Hmm, ok, so uniform rubber, 11 ingredients, should be pretty resilient to aging, forces on it, etc. Also, cheap.
08:41 PM LeelooMinai: I will buy some and try to put them on the steppers for lols.
08:44 PM LeelooMinai: Pff, I guess I was not being very creative: "Great for other things like rubber feet on the bottom of work bench to stop vibrations of Machine and hammer noise just drill them out and lag them on with a large washer and counter sunk hole a your done."
08:49 PM Vitran: I have done that countersunk hockey pucks on the bottom of several workshop benches
08:49 PM Vitran: and drill presses
08:49 PM Vitran: but I am from Canada, so meh
08:50 PM LeelooMinai: Right, probably there's a book somwhere for children in Canada "1001 uses of a hockey puck"
09:01 PM Vitran: Also cut them into wedges to prop doors open
09:12 PM Crom: That Ball Worm patent runs out in 2020
09:13 PM Crom: so 3 or 4 years... then we get them on fleabay
09:15 PM dewayne: Need Help with Mesa 7i76 trying to get 6-axis working can I put all 6 axis onto 1 7i76 ro do I need to use 2
09:17 PM Crom: crap it's a utility patent.. good for up to 20 years
09:25 PM LeelooMinai: Hmm, I wish I built-in some simple adjustment mechanism for my x rails, so I can tune them with the whole weight of the z-axis on.
09:25 PM LeelooMinai: Will have to devise some tool for this eventually.
10:04 PM Crom: still 90F out here 7:33pm
10:05 PM Crom: 89.8F now
10:10 PM Vitran: 50°F here in Ontario
10:17 PM LeelooMinai: 50 furblogs
10:27 PM M-comrade: Can someone explain what is the difference between machinekit and linuxcnc right now?
10:27 PM M-comrade: I'm updating my BBB, and I had an ancient linuxcnc/machinekit version
10:28 PM M-comrade: And it seems they have forked since my version
10:30 PM Tom_L: https://groups.google.com/forum/#!topic/machinekit/w9poGXTfzYI
10:30 PM Tom_L: maybe that will help?
10:48 PM Vitran: Was wiring the 7i77 today which was nice. Many wires to go
11:24 PM Crom: 80F 2038
11:26 PM Crom: 2054