#linuxcnc Logs
Nov 29 2020
#linuxcnc Calendar
12:45 AM Deejay: moin
12:55 AM gloops: amzing the amount of regs for making small very low volt electrical stuff
12:56 AM gloops: and yet they ship tonnes of stuff from china that doesnt seem to comply
01:34 AM Its000Zer000: Hey guys
05:09 AM JT-Cave: morning
05:09 AM XXCoder: yo
06:11 AM Tom_L: morning
06:11 AM XXCoder: yo
06:13 AM JT-Cave: yo
06:13 AM JT-Cave: 7 is ng, the latest version I can use with sw that does not phone home is xp :(
06:14 AM XXCoder: https://www.ghacks.net/2017/02/11/blocking-telemetry-in-windows-7-and-8-1/
06:15 AM XXCoder: that site is very detailed, removing any and all ms links and programs that call home
06:16 AM JT-Cave: I'm talking about sw calling home and registering
06:16 AM XXCoder: registering? as in activate wibdows?
06:16 AM JT-Cave: sw 2010 must be activated online and older versions only use xp
06:16 AM JT-Cave: solidworks
06:17 AM XXCoder: ahh yea
06:19 AM XXCoder: whats you use for cam?
06:19 AM XXCoder: or can sokidworks also do that?
06:20 AM JT-Cave: I use onecnc for cam
06:20 AM JT-Cave: I guess newer versions of sw can do cam
06:21 AM XXCoder: quote. too expensive for me then lol
06:22 AM Tom_L: you can't activate it?
06:23 AM JT-Cave: you can only have one activation at a time any more, they used to allow two but stopped
06:23 AM JT-Cave: when I had two either one on the laptop or down here and one in the shop
06:24 AM Tom_L: huh
06:24 AM JT-Cave: hmm I could run it with teamviewer over my lan
06:24 AM Tom_L: i've got it on at least 3
06:24 AM JT-Cave: solidworks?
06:24 AM Tom_L: no 7
06:25 AM JT-Cave: 7 is np sw is the problem
06:25 AM Tom_L: ahh gotcha
06:26 AM JT-Cave: the latest version that I have of sw that doesn't require online activation runs on xp or 2000
06:26 AM Tom_L: what version?
06:26 AM JT-Cave: 2001 IIRC
06:26 AM JT-Cave: sw 2001
08:54 AM _unreal_: JT-Cave, I mainly use estl cam
08:54 AM _unreal_: depends on what I'm doing
08:55 AM _unreal_: ESTLCAM, fusion360 and carbide create
10:17 AM jymmmm: Morning
10:20 AM Tom_L: not for long
10:20 AM jymmmm: heh
10:21 AM skunkworks: yah - found that out recently at work.. You used to be able to have 2 installs - the guys at work would have it on thier laptop too..
10:21 AM skunkworks: (solidworks)
11:36 AM miss0r: I just got a box in the mail from the guy I bought the 101 land rover from little under a year ago. He had scraped together some parts from the 101 he had stored away and sent it to me(what a nice guy). It, amongst other things, included two map reader lamps. https://www.ebay.co.uk/itm/Westair-Ltd-Map-Reading-Lamp-Type-G-Mk13-24VDC-EX-MOD/323711743726?hash=item4b5eb936ee:g:UvoAAOSw6GhcbAV5
11:36 AM miss0r: Like the one on the link. I am thinking about using them for something cool :D
11:36 AM miss0r: If you guys have any ideas what could be done with these, I am all ears
12:47 PM _unreal_: any one lie?
12:47 PM _unreal_: live
01:00 PM gloops: yeah, just
01:36 PM pfred1: Joe lies
01:43 PM unterhaus_: the cake is a lie
01:47 PM pfred1: let them eat cake!
01:59 PM veegee: Sweet my torch kit did come with flashback arrestors
01:59 PM veegee: Anyway, turn off oxygen first or acetylene first? Some people say turn off acetylene first, but the manual says turn off oxygen first
02:01 PM pfred1: doesn't matter
02:01 PM pfred1: if you turn the acetylene first it'll pop
02:01 PM pfred1: and if you turn off the oxy first it'll smoke
02:01 PM pfred1: if you want to be leet get quick disconnects
02:02 PM pfred1: but be sitting down when you see what they cost
02:02 PM * pfred1 has a Smith burn outfit
02:02 PM enleth: veegee: the customary way when working around other people is to turn off oxygen first because the pop is annoying and startling
02:03 PM pfred1: if you're easily annoyed or startled oxy acetylene isn't for you
02:03 PM veegee: I am not
02:03 PM pfred1: I've blown myself up so many times
02:03 PM pfred1: set places on fire
02:03 PM pfred1: with torches it comes with the territory
02:04 PM pfred1: set myself on fire
02:04 PM pfred1: where's that smoke coming from?
02:04 PM pfred1: pro tip always have a way to extinguish fires
02:04 PM veegee: I tend to follow safety practices quite strictly and understand them before I even turn it on
02:04 PM pfred1: at least a bucket of water something
02:05 PM veegee: Yeah I have fire extinguishers all over the place
02:05 PM pfred1: it's the stuff you don't see that ends up getting you
02:05 PM pfred1: torches can pop sparks
02:05 PM pfred1: it's what they do
02:05 PM pcw_home: FOOF
02:05 PM pcw_home: Fuel OX OX Fuel
02:05 PM pfred1: you mess with them long enoug hand all manner of things end up happening
02:06 PM enleth: pfred1: what you really need for oxy/acetylene is to somehow not worry about the fact that you're sitting next to pressurized tanks of one thing that's just waiting for a chance to decompose explosively, and another thing that makes almost anything flammable
02:06 PM pfred1: enleth I popped a spark on top of my acetylene tank once and the valve was leaking
02:06 PM pfred1: so there was a flame going on the valve
02:06 PM pfred1: I was so scared I couldn't work up a breath to blow it out
02:06 PM pfred1: It was one of them 5 foot tall bottles
02:07 PM pfred1: thinking back it's funny
02:07 PM veegee: Yeah same cylinder I have
02:07 PM pfred1: for like a minute I could barely draw a breath
02:07 PM enleth: pfred1: can't blame you
02:07 PM veegee: I got the biggest ones you can get because the price is pretty much the same
02:07 PM pfred1: I kept trying to blow it out
02:07 PM pfred1: but i was scared shitless
02:08 PM pfred1: yeah the cost in filling bottles is labor
02:08 PM enleth: veegee: protip: if the acetylene bottle starts making any noises by itself, get the fuck out of there and only start calling the fire department when you're a good distance away
02:08 PM pfred1: the actual product cost is negilible
02:08 PM pfred1: but the bottles leak
02:08 PM pfred1: so bring soapy water ot the gas house with you
02:09 PM veegee: You can smell it. Mine seems to be sealed well
02:09 PM pfred1: in the winter my smeller don't work too good
02:09 PM pfred1: that's another tip
02:09 PM pfred1: buy bottles in the cold
02:09 PM pfred1: you get more gas
02:09 PM veegee: They store them inside
02:09 PM pfred1: wow a gas house with heat?
02:10 PM pfred1: that's swank
02:10 PM veegee: The "factory" where they distill the oxygen is right next to the distributor
02:10 PM veegee: looks like everything is done inside
02:10 PM pfred1: they just freeze the air
02:11 PM pfred1: that's where they get nitrogen, oxyben and argon from
02:11 PM pfred1: each boils off at a different temp
02:11 PM pfred1: what a racket
02:13 PM veegee: I guess I'll turn off oxygen first to prevent carbon from building up behind the nozzle
02:14 PM pfred1: you got tipe cleaners?
02:14 PM pfred1: tip cleaners even
02:15 PM pfred1: it's slag that builds up in tips
02:15 PM pfred1: as the bead pops sometimes the sparks blow up in the tip
02:15 PM pfred1: enough that eventually the tip clogs
02:15 PM pfred1: which is why they make tipe cleaners
02:15 PM pfred1: why can't I type tip?
02:16 PM veegee: Not on hand, I should get some
02:16 PM veegee: I primarily do TIG and stick
02:16 PM pfred1: yeah you need tip cleaners and a file
02:17 PM pfred1: you can do some leet gas welding
02:17 PM veegee: this is more for melting things and the lead battery terminals on my forklift battery
02:17 PM pfred1: I've welded tiny washers to brake lines with a gas torch
02:17 PM pfred1: like 4-40 sized washers
02:17 PM veegee: I like TIG the most
02:17 PM pfred1: there's no way I could TIG that
02:17 PM veegee: why not?
02:17 PM pfred1: soon as the bead cracked the washer would be gone
02:18 PM pfred1: it's be a ball of snot
02:18 PM veegee: You can TIG anything
02:18 PM pfred1: not real small stuff
02:18 PM veegee: Just need the right pulse settings
02:18 PM pfred1: there's a lower limit to the arc power
02:19 PM pfred1: jewlers use gas torches
02:19 PM pfred1: to make jeweleries
02:19 PM pfred1: but you need a small torch
02:20 PM pfred1: mostly a torch is great for busting apart hardware
02:20 PM pfred1: stuff that should never come apart
02:20 PM pfred1: like nuts off exhaust manifold studs
02:21 PM pfred1: heat it up just right and hit it with an impact gun and it comes off like new
02:28 PM veegee: pfred1 there's this: https://www.youtube.com/watch?v=MVdU0Q_-tFo
02:32 PM pfred1: veegee that's spot welding
02:32 PM veegee: It's not
02:33 PM pfred1: sure looks like it
02:33 PM veegee: It's definitely not
02:33 PM veegee: It uses argon and a pulse with a tungsten electrode
02:33 PM pfred1: I don't see them running a bead
02:33 PM veegee: That doesn't matter
02:33 PM pfred1: it does to me
02:34 PM veegee: the way it works is not through resistive heating like a spot welder
02:34 PM pfred1: how does it work?
02:34 PM veegee: The heat comes from the arc, like in TIG
02:34 PM pfred1: they were in contact with the work
02:35 PM veegee: like scratch start TIG..
02:35 PM veegee: that's NOT spot welding
02:35 PM pfred1: well it ain't running a bead either
02:35 PM veegee: ...
02:35 PM veegee: bead or not is not what defines the type of welding
02:35 PM veegee: You can run a bead with a spot welder
02:36 PM pfred1: no I can't
02:36 PM pfred1: maybe run with beads
02:36 PM veegee: Maybe you can't, but I can
02:36 PM pfred1: skills pay bills
02:36 PM veegee: https://www.youtube.com/watch?v=V7-mcjR59a4
02:37 PM pfred1: what a waste of perfectly good utility knife blades
02:38 PM veegee: it's called "pulse arc welding"
02:39 PM veegee: I think someone here has one of those machines, I forgot who
02:50 PM _unreal_: now if you can get one to be driven by an ark reactor
02:50 PM _unreal_: :)
02:58 PM _unreal_: My offical thoughts at this opint. I FUCKING HATE mach3
02:59 PM _unreal_: god planet cnc runs circles around mach3
03:06 PM rs[m]: pcw_home: FOOF is fluor oxygen oxygen fluor. one of the most vicious substances ever.
03:07 PM rs[m]: not stable under any conditions. would explode wet sand, but nobody managed to make enough of that stuff
03:08 PM rs[m]: https://en.wikipedia.org/wiki/Dioxygen_difluoride
05:51 PM -!- #linuxcnc mode set to +v by ChanServ
05:56 PM andypugh: Miniature coil-on plug: https://www.youtube.com/watch?v=S1gIbXvlWjo
05:56 PM Tom_L: andypugh, any updates on the RTAI patch?
05:56 PM andypugh: (This isn’t me, it’s another LinuxCNC user that I helped out a bit years ago. Watch to the end for a hint as to why he is doing it.)
05:56 PM andypugh: I think it is likely that RTAI is fixed, but a problem remains inside LinuxCNC I think.
05:56 PM Tom_L: i got as far as trying to install 2.8 and it didn't like the os name it saw
05:56 PM Tom_L: did run your first test 10k passes ok
05:58 PM enleth: what would be the simplest way to add stepper motor control to a machine that already has 6i25+7i77? X/Y/Z are servo driven, but I'm willing to go with steppers for A/B with the assumption that I don't need synchronized 4/5 axis moves, just positioning between 3-axis cuts
05:58 PM Tom_L: you should still be able to get synchronized cuts
05:58 PM andypugh: How many steps per second do you need?
05:59 PM enleth: andypugh: hell if I know, but I'm going to assume not very many for just positioning
05:59 PM enleth: oh, and the PC does not have LPT
06:00 PM andypugh: SImplest is probably a 7i76 on the second header of the 6i25. But cheapest is possibly to use some servo-thread GPIO on the 7i77.
06:00 PM andypugh: Then in the middle is generic p-port BoB on the 6i25 internal header.
06:02 PM enleth: is any of those latter two supported by the standard FPGA payloads for 6i25?
06:03 PM andypugh: Yes, look for a firmware with 7u77 and G54o in the name.
06:03 PM Tom_L: you may find a bitfile that does that
06:03 PM andypugh: (7i77, that is)
06:03 PM andypugh: And G540
06:05 PM Tom_L: there's a 7i77 / 7i76 one or two
06:05 PM Tom_L: isn't the 76 stepper?
06:06 PM Tom_L: the only G540 i see is G540x2
06:07 PM enleth: yep, doesn't look like there's a 7i77+G540 bitfile pre-built in the firmware package
06:07 PM Tom_L: you can make one :)
06:07 PM enleth: ugh, xilinx tools again
06:08 PM Tom_L: how close is the pinout on the 76 compared to the 540?
06:08 PM andypugh: 5i25_7i77_bstech.bit
06:08 PM andypugh: Looks close
06:09 PM andypugh: 7i77_7i78 id you prefere a second Mesa card
06:12 PM enleth: https://www.forum.linuxcnc.org/27-driver-boards/35466-5i25-7i77-3-servos-and-one-stepper that confirms it
06:18 PM pcw_home: I can make a 7i77_g540 config it that's needed (a 7I77+5ABOB would also probably be good)
06:21 PM enleth: pcw_home: that would be appreciated, more options is always better and I'm probably going to want to use an actual factory made BOB instead of cobbling together a custom device
06:22 PM andypugh: Why not use a 7i78?
06:23 PM enleth: I don't have it and can't really justify the expense right now just to control a chinese rotary
06:24 PM pcw_home: do you have a G540? if not a 5ABOB pinout might be more useful
06:25 PM pcw_home: ( That's for the ubiquitous "Mach 5 Axis BOB" )
06:26 PM enleth: I was under impression that half of the cheap BOBs are pin-compatible with G540, but going for the other half is fine too
06:28 PM enleth: OK, it's more like 20/80
06:28 PM enleth: 5ABOB it is then
06:28 PM Tom_L: bet you don't get that support with mach :)
06:28 PM enleth: literally 10 bucks for one of those, and locally, not on aliexpress
06:32 PM enleth: Tom_L: no amount of support would convince me
06:33 PM enleth: Tom_L: I've got enough of Windows-based CNC with the KUKA robot that uses Win95 and VxWorks
06:34 PM enleth: and that does, at least, use a proper RT kernel for RT stuff, VxWorks preempts Windows on the single Pentium CPU
06:34 PM -!- #linuxcnc mode set to +v by ChanServ
06:35 PM enleth: besides, it does use actual DSPs for servo waveform generation, so it is sort of like LinuxCNC with Mesa
06:42 PM pcw_home: http://freeby.mesanet.com/5i25_77_5a.zip
06:43 PM enleth: cool, thanks
08:28 PM Eric__: oil meter units cost way too much
08:28 PM Eric__: If i bought them from MSC it would cost $200 for my lathe
09:34 PM _unreal_: well that threw me for a fucking loop
09:35 PM _unreal_: some how the blade connector on my main power cord going into the new machines primary breaker. went bad. I dont know how ether makes no sense, I have not touched it or anything and even worse. its one of those heat shrink kind so its not like the wire could have pulled out or broken.
09:35 PM _unreal_: so fucked up
09:35 PM _unreal_: took me like an hour trying to figure out where the issue was
09:36 PM _unreal_: I finally said WTF and cut the wire and sure er then shit I got a signal from my MM
09:36 PM _unreal_: so ya some how a blade connector went bad
09:36 PM _unreal_: freaking weird