#linuxcnc | Logs for 2016-05-22

[02:31:38] <Deejay> moin
[02:31:59] <XXCoder> boo
[02:50:07] <pink_vampire> hi
[02:50:11] <XXCoder> hey
[02:50:54] <pink_vampire> how are you?
[02:51:03] <XXCoder> tired lol
[02:51:06] <XXCoder> been cleaning my room
[03:08:26] <pink_vampire> chips all over?
[03:11:16] <XXCoder> nah just mess
[03:11:25] <XXCoder> havent cleaned for quite a while
[03:11:47] <XXCoder> I'm awful on upkeep. tomorrow I gonna clean my van. just small mess there but bugs me.
[03:12:40] <pink_vampire> I want to build something with optics.
[03:13:02] <pink_vampire> I need some optical simulator for that.
[03:13:05] <archivist> an interferometer?
[03:14:10] <XXCoder> what kind of optics stuff?
[04:44:52] <mase-tech> Hey
[04:44:54] <mase-tech> HO
[04:45:08] <mase-tech> What a beautyful day in germany
[04:45:18] <mase-tech> Sunny warm hot
[04:45:58] <mase-tech> <- nerd on chick hunt !
[04:46:01] <mase-tech> :D
[04:48:15] <XXCoder> chick hunt jeezus. :P
[08:17:09] <Polymorphism> read some reports of just how flexible those unsupported curtain rod rails are
[08:17:12] <Polymorphism> going to have to really think about this
[08:17:22] <Polymorphism> contacted omio about shipping, reply within 12 hours
[08:22:25] <Polymorphism> Still considering X6-2200l $2558.23 shipped for omio, my increased shipping price last night was my mistake, I had two in cart
[08:22:38] <Polymorphism> back to the grind, bbl
[08:24:36] <Polymorphism> its a large chunk more cash but people were saying you could just pull on the spindle and the rails will flex on the round rail style
[08:24:39] <Polymorphism> I didnt like the sound of that
[08:24:58] <Polymorphism> even with my light use, that doesnt sound like a wise investment
[08:34:32] <archivist> unsupported rails will always flex
[08:35:59] <archivist> the question is, are the rails large enough to bring the flex into a sensible range, because ALL machines flex
[08:37:20] <SpeedEvil> yes.
[08:37:28] <SpeedEvil> Shape of rails is - almost - a meaningless question
[08:37:29] <archivist> here I can demonstrate flex full scale with my little finger on a short 2" bar http://www.collection.archivist.info/searchv13.php?searchstr=precimeter
[08:37:40] <SpeedEvil> you can make a really good machine with any shape rails.
[08:38:00] <archivist> I admit the gauge is rather sensitive
[08:38:12] <malcom2073> My 3000lb knee mill flexes
[08:39:54] <malcom2073> On the other hand, my dad has a small techno Isel router that uses unsupported rails (and that's a 10k router new), and it works great with no noticable flex in its normal operating range
[08:40:38] <SpeedEvil> Start out with what your tollerances are, and what the cutting forces you need are.
[08:41:18] <SpeedEvil> Shaping with large cutters in HSS is going to be somewhat more demanding than routing thing grooves in styrofoam
[08:41:32] <SpeedEvil> ^thin
[08:41:39] <Polymorphism> I need to route lots of aluminum
[08:41:42] <Polymorphism> 1.3-2mm thick
[08:41:56] <Polymorphism> shallow cuts would be ok if that can circumvent the round rail limitation
[08:42:00] <archivist> I was playing with that comparator yesterday, it senses leaning on the bench
[08:42:27] <Polymorphism> very sensitive
[08:42:27] <SpeedEvil> archivist: :)
[08:42:42] <SpeedEvil> archivist: I wish interferometers were a thing.
[08:42:59] <SpeedEvil> archivist: several of them giving an absolute position
[08:43:01] <archivist> they are a thing, I got one on ebay
[08:43:53] <Polymorphism> techno isel uses round rail?
[08:44:01] <archivist> it is just an educational one and shows rings with a LED laser off a cheap level
[08:44:13] <Polymorphism> oh the shape doesnt matter as much you were saying, its whether or not its supported
[08:44:26] <SpeedEvil> archivist: I mean inexpensive I/Q outputs per 600nm or so
[08:44:34] <archivist> pfft
[08:45:26] <archivist> I wonder if we could make such a thing that was near enough for amateur use
[08:47:51] <archivist> http://sciencedemonstrations.fas.harvard.edu/presentations/michelson-interferometer
[08:48:37] <archivist> and use a ccd off a scanner or something to count the fringes
[09:44:43] <asdfasd> how to load g-code from local network? I forgot which folder was the mapped network path?
[10:07:15] <maxcnc> hi all from a nice sunny germayn
[10:07:58] <maxcnc> asdfasd: still on
[10:08:52] <maxcnc> Polymorphism: still no mashine
[10:09:17] <maxcnc> i woudt be gracy with one day of g-code
[10:09:17] <asdfasd> found it
[10:09:22] <maxcnc> ;-)
[10:09:56] <asdfasd> .gvfs
[10:10:02] <asdfasd> but it is hidden
[10:10:07] <maxcnc> asdfasd: way better to comand your CAM to post into nc-foölder
[10:10:07] <asdfasd> forgot that
[10:10:36] <maxcnc> and if you automate
[10:10:55] <maxcnc> do a N7000.xxx to wherever
[10:11:05] <maxcnc> make a button and reload that file
[10:11:28] <maxcnc> so you are alway ony one button click away from last cam
[10:12:46] <maxcnc> pete water temp is
[10:14:56] <_methods> asdfasd: make sure you add your user to the fuse group also
[10:15:12] <_methods> that burned me the other day when i was trying to load/edit network files
[10:15:41] <maxcnc> _methods: use sunblocker
[10:15:50] <maxcnc> ROFL
[10:16:39] <maxcnc> im off
[10:21:00] <Erant> Welp, my $30 VFD gamble powers up without an error code at least.
[10:21:13] <Erant> Now I just gotta wait for the 3ph motor.
[10:21:36] * Jymmm hands Erant the fire extinguisher
[10:22:26] <Erant> Hehe. I got one riiiight here ;) It was removed from a machine without being tested first, so they were selling it for $15. They go for about $120 everywhere else.
[10:27:05] <Erant> My only problem now is the step up transformer I thought was 500W, is actually 200W.
[10:28:52] <Erant> So I'm going to see if I can scrounge for a big beefy ~1500VA transformer.
[10:29:43] <Jymmm> If you are desperate, there's always grainger, just bring/buy the vaseline too.
[10:30:59] <Erant> Haha.
[10:34:01] <Jymmm> Erant: I kid you note... https://www.grainger.com/product/SQUARE-D-Wall-Mount-120-240VAC-General-2CT11
[10:34:05] <Jymmm> not*
[10:34:25] <Erant> Holy fucking *bleep*
[10:34:40] <Jymmm> told ya
[10:36:04] <Jymmm> Erant: https://www.grainger.com/product/VASELINE-Petroleum-Jelly-WP5003395/_/N-/Ntt-vaseline?searchBar=true&sst=subset&s_pp=false&picUrl=//static.grainger.com/rp/s/is/image/Grainger/39E701_AS01?$smthumb$
[10:36:33] <CaptHindsight> not sure who still shops at Grainger besides schools, guberment and businesses that don't watch their maintenance budget too closely
[10:38:58] <Erant> How the fuck is a 13oz jar of vaseline $15?
[10:39:08] <Jymmm> We used to get our 5/10HP motors and blower from them.
[10:39:42] <Jymmm> Erant: lol, reread what you wrote
[10:40:12] <Jymmm> Erant: it's sex lube baby, reason to up da price
[10:40:29] <Jymmm> Erant: now, bend over and let grainger take over!
[10:40:50] <Erant> ;)
[10:40:57] <Jymmm> Erant: It DOES say "barrier"... so it's safe sex =)
[10:41:10] <Erant> Oh the logic.
[10:41:29] <CaptHindsight> "stop in at Grainger today, where we always separate you from your money"
[10:42:13] <Erant> Unless you know how Google works.
[10:42:16] <Jymmm> whoa, ound something cheap https://www.grainger.com/product/NORTH-Sting-Relief-Wipes-38W769?s_pp=false&picUrl=//static.grainger.com/rp/s/is/image/Grainger/38W769_AS01?$smthumb$
[10:42:25] <Jymmm> found*
[10:42:33] <Jymmm> good price too
[11:36:06] <jdh> we use grainger at work. prices are much less than the normal website prices
[11:40:49] <Jymmm> jdh: you probably have discount pricing on your account too.
[11:41:06] <jdh> I do
[11:41:27] <jdh> but, not the same discount we get if I order through our purchasing portal at work
[11:42:57] <Jymmm> ah
[11:45:13] <Jymmm> If there is copper clad steel wire, is there some that have a silverish/pewter looking finish?
[11:45:47] <jdh> it is very convenient. I load up my grainger shopping cart, click checkout and it drops back to our purchasing system, auto-issues a PO and places the order
[11:46:35] <Jymmm> jdh: Awesome, I'll send you my shopping list
[11:47:52] <jdh> k. I need an account # to bill it to.
[11:48:08] <Jymmm> jdh: 8676309
[11:48:16] <Jymmm> err 8675309
[11:48:28] <jdh> k, c/o Jenny
[11:48:40] <Jymmm> exactly
[11:53:36] <miss0r> o/
[11:54:16] <miss0r> about to run my first 'multi tool' program on my 'new to me' mill here. I need all the luck wishing I can get
[11:55:14] * Jymmm hands miss0r TWO fire extinguishers
[11:55:31] <Jymmm> ...and a roast beef sandwich.
[11:56:04] * miss0r needs more hands
[11:56:26] <miss0r> I just hope I managed to set the correct tool height here.
[11:56:58] <miss0r> and I feel good about having a knob, able to ajust from 0 - 140% feed speed. that will come in handy at tool changes
[11:57:34] <Jymmm> miss0r: http://www.awn.com/sites/default/files/styles/inline/public/image/attached/2736-aeon03fandsaeonflux-fg0507.jpg?itok=R3_pa0QT
[11:58:09] <Jymmm> four hands, no feet
[11:58:40] <miss0r> if I was 'blessed' with that, I would realy need to clean the floor down here more often
[12:00:31] <malcom2073> Jymmm: That movie was weird
[12:08:58] <Jymmm> malcom2073: how so?
[12:09:41] <malcom2073> Jymmm: It was just an odd movie. Weird camerawork, weird effects, very offbeat
[12:09:45] <malcom2073> I liked it, but it was weird.
[12:10:04] <Jymmm> not any more than any other scifi flick
[13:22:28] <Polymorphism> still cncless
[13:26:07] <malcom2073> At least you have a printer coming
[13:26:43] * archivist does not believe
[13:27:09] <malcom2073> Ye of little faith!
[13:29:07] <archivist> I learn from experience
[13:38:07] <Polymorphism> true
[13:38:16] <Polymorphism> but I still want the cnc, mostly for pcbs
[13:38:23] <Polymorphism> and working with the enclosures that are larger
[13:38:28] <Polymorphism> and metal ofc
[13:38:42] <archivist> and pie in the sky
[13:39:36] <malcom2073> mmmmm pie
[13:44:54] <Polymorphism> =\
[13:58:14] <Duc> you bought soemthing finally
[13:59:12] <Polymorphism> I bought a 3d printer
[13:59:17] <Polymorphism> tried to buy a cnc
[13:59:21] <Polymorphism> but something terrible may have happened
[13:59:24] <Polymorphism> investigating now
[13:59:57] <Duc> payed and they arent delivering the goods?
[14:00:31] <Polymorphism> well I tried to pay but the bank declined
[14:00:42] <Polymorphism> so I cancelled the order, but then the bank may have later allowed it!!!!
[14:00:47] <Polymorphism> So I'm making sure this isnt bad
[14:00:57] <Polymorphism> I would hope the chinese would do the right thing
[14:01:02] <Polymorphism> oh no.
[14:02:25] <Duc> it happens all the time
[14:02:37] <Polymorphism> I'm sure its ok
[14:02:42] <Polymorphism> it wouldnt be the company that has it anyway
[14:02:45] <Polymorphism> it would be alixpress
[14:02:45] <Duc> I would just wait to see if the charges stay and if something ships
[14:02:54] <Polymorphism> the seller sent me a message
[14:03:01] <Polymorphism> I replied, I just hope the cnc itself isnt a mistake
[14:03:06] <Polymorphism> I was almost happy the payment failed
[14:03:10] <Polymorphism> those round rails....
[14:03:11] <Polymorphism> the flex....
[14:03:19] <Polymorphism> only double the price for hiwin...
[14:03:24] <Polymorphism> but we will see what they say
[14:03:31] <Polymorphism> I've got a 3d printer coming either way
[14:04:57] <Duc> Hiwin would be better then the round rails
[14:05:11] <Polymorphism> would it be worth paying $2500 vs $1100 though?
[14:05:14] <Polymorphism> thats what it's come to
[14:05:16] <Polymorphism> for the hiwin rails
[14:05:57] <Polymorphism> also 2.2kw spindle limit/home switch usb handheld controller and 5.5" vs 2.5" z as well as 40v stepper motor voltage
[14:06:53] <Roguish> Polymorphism: have you heard the expression: shit or get off the pot.....
[14:07:07] <Roguish> or 'fish or cut bait' .....?
[14:09:08] <Polymorphism> Roguish, so which one are you suggesting?
[14:09:15] <Polymorphism> or are you saying its worth the extra cash?
[14:09:20] <Polymorphism> for those features
[14:09:28] <Polymorphism> taking into consideration my requirements
[14:09:37] <djdelorie> we don't care about your requirements any more
[14:09:42] <djdelorie> buy something or shut up about it
[14:09:45] <Roguish> BUY A DAMN CNC !!!!! just write the check for crying out loud....
[14:10:10] <Tom_itx> you don't make a decision on your own soon, the interweb will turn on you and start feeding you very bad advice
[14:10:22] <djdelorie> Tom: I started that a month ago :-)
[14:10:23] <Polymorphism> bad advice would be preferable to none
[14:10:35] <Polymorphism> I just enumerated the differences between the two machines and their price difference
[14:10:38] <Tom_itx> i'd rather give none at this point
[14:11:13] <djdelorie> worse, he's insulting us by asking about machines that don't support linuxcnc...
[14:11:33] <Polymorphism> they do
[14:11:37] <Tom_itx> i haven't even been paying attention
[14:11:53] <Polymorphism> thats probably for the best
[14:12:15] <Tom_itx> i used to read the logs but now i just skim the pages for nicks and move on
[14:13:50] <_methods> buwhahahhahah
[14:16:10] <Duc> by now you could have purchased a old Iron and installed LCNC onto it
[14:16:22] <_methods> zlog
[14:18:15] <Duc> in the timme its taken you to make a decision I've already installed a 4th axis and almost restored a cold saw
[14:18:19] <Duc> just saying
[14:20:43] <Polymorphism> =\
[14:23:50] <Duc> there will always be a better deal after you buy something. Just a fact of life
[14:27:14] <Polymorphism> I send some more pms and posted some more forums
[14:34:35] <Duc> pms?
[14:34:50] <Tom_itx> don't ask don't tell
[14:39:00] <Polymorphism> indeed
[14:49:09] <Tom_itx> here would mean private message, in women's circles it could take on a whole new meaning
[14:49:51] <Duc> LOL Guess I dont live on IRC enough to remember all the commands
[15:15:16] <Polymorphism> (╯°□°)╯︵ ┻━┻
[15:45:06] <jdh> get a usb based controller, or one with its own gcode interpreter
[16:00:23] <Polymorphism> what?
[16:00:28] <Polymorphism> isnt that the opposite of what a linuxcnc personw ould say
[16:00:45] <Polymorphism> I should just add usb to linuxcnc
[16:00:50] <Polymorphism> and solve this once and for all
[16:02:26] <Polymorphism> jdh,
[16:03:00] <jdh> I would prefer you used Mach
[16:03:43] <Polymorphism> but how will I come here for support? xD
[16:05:47] <malcom2073> We don't provide support here, unless you count the emotional kind. There there, you bought a pos, it's ok, you're not a worse person for it
[16:05:48] <malcom2073> etc etc
[16:06:31] <Polymorphism> havent technically bought anything yet
[16:06:38] <Polymorphism> are you saying I need to go back to square one with this decision?
[16:06:55] <Polymorphism> well, my 3d printer is coming =)
[16:06:58] <Polymorphism> so progress
[16:07:21] <XXCoder> 3d printer dont need linuxcnc
[16:07:35] <XXCoder> it has its own built in stuff, you just copy model file to it.
[16:07:58] <Demure_> Wiring up some stepper motors to existing cables and definitely not experienced, just wondering if this is an acceptable way of doing it and if I should worry about the thin cables being damaged (It's the X axis stepper so moving along the Z axis) / any tips to cover 'em up neatly? ( http://i.imgur.com/j9QLjnY.jpg )
[16:08:14] <Polymorphism> XXCoder, yeah he meant for the CNC I still need
[16:08:14] <Demure_> (Avert your eyes if you don't want to see amateur hour wiring)
[16:08:27] <XXCoder> Demure_: I use same connectors heh
[16:08:49] <XXCoder> yours is better quality, you bothered to give wires sleeve ;)
[16:08:49] <Polymorphism> whats thart all about?
[16:09:16] <Polymorphism> why is there so much going on?
[16:09:30] <Demure_> XXCoder: Consider me perhaps overly worried about electrocution :')
[16:09:34] <Polymorphism> you couldnt solder to the terminals of the connector and heat shrink the joint
[16:09:50] <malcom2073> Demure_: You should be more concerned about frying your drivers if a wire comes loose
[16:09:55] <Polymorphism> xD
[16:09:58] <malcom2073> a stepper wire loose won't hurt you, it'll just hurt the electronics
[16:10:18] <Demure_> I always thought 2 amps was fairly painful?
[16:10:20] <Polymorphism> just dont put it in your mouth
[16:10:34] <malcom2073> Depends on the voltage
[16:10:38] <XXCoder> Demure_: heat strunk probably will do it fine
[16:10:51] <Demure_> Would be around 80/90v
[16:10:54] <XXCoder> I need to do same
[16:11:12] <jdh> Demure_: make sure the wires are solidly connected in the terminal block before powering on.
[16:11:16] <malcom2073> You'd feel it through the thick skin of your fingertips, but otherwise you should be fine, besides you shouldn't be that close to the machien while it's moving :-P
[16:11:19] <Polymorphism> malcom2073, what router do you have
[16:11:32] <Demure_> I suppose that's the more obvious path, time to improve solder skills..
[16:11:35] <malcom2073> But yeah, make sure they're solidly connected, and strain relief the cable so that the part that moves isn't the wires where they go in
[16:11:35] <Demure_> Thanks! :)
[16:11:39] <Polymorphism> soldering is easy demure
[16:11:43] <Polymorphism> heat the part, not the solder
[16:11:45] <malcom2073> Polymorphism: My router isn't finished it's a homebuilt, I have a mill
[16:11:48] <Polymorphism> and keep your tip clean
[16:11:53] <Polymorphism> tin it slightly beforte each joint
[16:11:56] <Polymorphism> remember that and youre golden
[16:12:01] <Polymorphism> malcom2073, ah ok
[16:12:09] <Demure_> My tip's currently ruined so only one tiny portion of the side actually seems to heat up, so I'll need to get a replacement tip before I continue
[16:12:11] <XXCoder> malcom2073: need to do that too. thankfully I left my wires very loose so it should never strain connectors on steppers itself
[16:12:22] <Polymorphism> demure for soldering wires etc together get a 'helping hands'
[16:12:22] <malcom2073> All in all I'll have about $600 worth of parts in the router when it's finished, and it'll be significantly more sturdy than a 6040 heh
[16:12:24] <Polymorphism> its invaluable
[16:12:27] <djdelorie> Demure_: make sure the cable end is solidly attached to the axis as well, so that those connectors don't have any physical strain on them
[16:12:30] <Polymorphism> Demure_, get a new tip
[16:12:38] <Polymorphism> or if you have to
[16:12:41] <Polymorphism> clean it up with sandpaper
[16:12:42] <Tom_itx> jdh, i think you're being a little hard on the poor fellow
[16:12:43] <Polymorphism> better than using it as is
[16:12:52] <jdh> no you don't
[16:13:03] <Tom_itx> hah
[16:13:21] <Demure_> djdelorie: I'm more worried about the thin wires going into the stepper being damaged by swarf, is there any common product to cover it up or is standard heatshrink strong enough for that?
[16:13:43] <Polymorphism> I think thats highly unlikely...
[16:14:01] <malcom2073> Demure_: Rotate the stepper so the hole is on the bottom
[16:14:15] <djdelorie> spiral wire wrap might be sufficient
[16:14:22] <djdelorie> even electrical tape will do
[16:14:26] <XXCoder> djdelorie: whats that
[16:14:37] <Tom_itx> get's kinda sticky when exposed to coolant though
[16:14:38] <Demure_> http://img.alibaba.com/wsphoto/359272044/Free-Shipping-wholesale-5pcs-set-Spiral-wire-management.jpg
[16:14:40] <Demure_> This kinda stuff
[16:14:43] <djdelorie> https://files.cablewholesale.com/hires/30cw-022xx.jpg
[16:14:53] <Polymorphism> thats how the chinese do it
[16:14:55] <XXCoder> ahh thats pretty nice
[16:15:12] <XXCoder> certainly better than currently uncontained stepper wires my machine has.
[16:15:19] <Polymorphism> xD
[16:15:39] <djdelorie> I was lucky, my servos came with pre-installed cables that were long enough, so no connectors at that end :-)
[16:16:03] <Polymorphism> Demure_, http://www.amazon.com/ProsKit-900-015-Helping-Hands-Soldering/dp/B01E62773K this is nice for soldering wires together + more
[16:16:14] <Polymorphism> lucky you djdelorie
[16:16:23] <XXCoder> https://www.youtube.com/watch?v=5LTTuFjYc0I you can see Y wires hanging loose
[16:16:29] <Demure_> Polymorphism: I have one, but thanks for the advice. :)
[16:16:43] <djdelorie> Demure_: also, google "wire cable drag chain
[16:17:15] <Polymorphism> I see the loose wires XXCoder
[16:17:16] <djdelorie> Polymorphism: perhaps, but most of the servos I've seen have screw-lock connectors on the servo itself
[16:17:18] <Polymorphism> is this youyr machine?
[16:17:18] <Demure_> XXCoder: Hah, that does look familiar. This will be for a lathe, though.
[16:17:49] <XXCoder> Polymorphism: yeah, its just video to show how it sounds like running. it was apparently badly tuned
[16:17:54] <Polymorphism> is it a 6040?
[16:17:55] <Demure_> djdelorie: I think that's a bit overkill since it's only the first 5-10cm of the wire that's an issue right now
[16:17:59] <XXCoder> if you want, click on next video "after tuneup"
[16:18:04] <Polymorphism> I'm already watching it
[16:18:13] <djdelorie> Demure_: no, those are for the rest of the cable :-)
[16:18:37] <Demure_> djdelorie: The rest of the cable is not exposed at all. :)
[16:18:47] <Polymorphism> is that a 3040 XXCoder
[16:18:50] <XXCoder> yeah nice and thick cable
[16:19:02] <XXCoder> Polymorphism: yeah, though 43mm clamp type. don't buy THAT.
[16:19:16] <Polymorphism> ok
[16:19:31] <XXCoder> machine itself is ok, its clamp area that cant accept normal spindles without adoptors.,
[16:19:45] <Polymorphism> why does it make grinding noises
[16:19:49] <djdelorie> cable chain is't for exposure, it's to guide cables that move to keep them in the right place
[16:19:54] <XXCoder> in first video?
[16:19:55] <djdelorie> just something to be aware of :-)
[16:20:00] <Demure_> Ahhh I see
[16:20:01] <XXCoder> it wasnt configured correctly Polymorphism
[16:20:03] <Demure_> I misunderstood it's purpose
[16:20:07] <Polymorphism> and 2nd XXCoder
[16:20:22] <Polymorphism> https://www.youtube.com/watch?v=GTYpwJTB39A&t=0m40s
[16:20:25] <Polymorphism> I hear a chattering
[16:20:25] <Demure_> Thanks!
[16:20:43] <XXCoder> resourance issues, still some configure issues but from what I understand, its better than first since that has skipping
[16:21:16] <djdelorie> servos are quiet... if only they weren't so expensive
[16:21:31] <XXCoder> honestly dont care about noises
[16:21:36] <jdh> heh
[16:21:36] <XXCoder> just want proper operations
[16:21:39] <Polymorphism> isnt the noise from soemthing happening
[16:21:49] <Polymorphism> that noise is a mechanical ocscillation
[16:21:50] <djdelorie> well yeah, anything is quieter than the spindle :-)
[16:21:50] <Polymorphism> or something
[16:22:01] <Polymorphism> shouldnt it be almost silent?
[16:22:04] <XXCoder> Polymorphism: "crunchy" bearings too, if I recall from someone else comment.
[16:22:06] <Polymorphism> jdh, does your 6040 make these noises
[16:22:11] <Polymorphism> do you have a video of your 6040 jdh
[16:22:16] <XXCoder> chinese and bearings, dont trust em on bearings
[16:22:19] <jdh> no vidoes
[16:22:27] <Polymorphism> any pics?
[16:22:55] <jdh> mine sounds like normal steppers. that one sounds sick
[16:22:56] <djdelorie> but stepper "noise" is a symptom of needing to over-drive them to avoid lost steps, which means heat and wasted power
[16:23:02] <XXCoder> uggh some people dont know how to make videos that dont make me sick
[16:23:25] <XXCoder> djdelorie: one of improvements was decreasing power from 100% to 75%
[16:23:30] <XXCoder> maybe I shoul try 50%
[16:23:30] <Polymorphism> jdh,
[16:23:31] * djdelorie needs to record my next cnc session, to add to the mix...
[16:23:36] <Polymorphism> you don't mean the good kind of sick
[16:23:38] <XXCoder> it moves silk smooth at 200 mm/s
[16:23:43] <jdh> no, I'm old. sick is bad
[16:23:49] <Polymorphism> ok
[16:23:51] <djdelorie> I need to increase the current to one of the steppers on my 3d printer, it loses steps a lot :-(
[16:24:08] <djdelorie> but also runs hot enough I might need to add a cooling fan
[16:24:14] <Polymorphism> djdelorie,
[16:24:16] <Polymorphism> what 3d printer do you have
[16:24:21] <djdelorie> rostock max
[16:24:34] <XXCoder> jdh: one in my video? if so, before or after tuneup?
[16:24:39] <jdh> both
[16:24:51] <Polymorphism> XXCoder, I dont even own a cnc yet and it sounds absolutely awful in both vids
[16:24:54] <Polymorphism> I don't mean to insult
[16:24:59] <Polymorphism> but I've watched probably 1000 videos now
[16:25:00] <Polymorphism> on cncs
[16:25:06] <Polymorphism> that noise isnt right
[16:25:13] <XXCoder> Polymorphism: np, I cant hear em, it makes it extremely hard to figure whats going on,.
[16:25:13] <jdh> could just be something loose
[16:25:34] <Polymorphism> it does sound better in the 2nd vid
[16:25:36] <Polymorphism> but still very wrong
[16:25:41] <Polymorphism> yeah true
[16:25:50] <Polymorphism> it sounds to me like a skipping vibration type noise, a chattering almost
[16:26:07] <Polymorphism> mid-high frequency
[16:26:16] <XXCoder> I have setup live webcast but dont wanna do it today as I have party today
[16:26:29] <djdelorie> here's what mine sounds like, and that's before tuning: https://www.youtube.com/watch?v=i0T55NAHmqg
[16:26:48] <XXCoder> djdelorie: too bad it dont have vibro-vision addon ;)
[16:26:49] <djdelorie> the underside's belt was way too tight
[16:27:52] <Polymorphism> XXCoder, are you HoH? is that what you're saying
[16:27:56] <XXCoder> nope
[16:28:01] <XXCoder> that requires hearing
[16:28:16] <Polymorphism> I understand
[16:28:17] <XXCoder> I don't have any lol
[16:28:20] <Polymorphism> that would make it tough to diagnose
[16:28:26] <XXCoder> no shit.
[16:28:39] <Polymorphism> have you gone through and checked all bolts
[16:28:57] <Polymorphism> I heard they often come lose, not sure how long you've had this thing
[16:29:03] <Polymorphism> loose
[16:29:08] <XXCoder> yeah but should check again, after hours running one program
[16:29:19] <XXCoder> spindle vibrates so hard,.
[16:29:45] <Polymorphism> in free air?
[16:29:49] <djdelorie> one tiny advantage of wood - wood screws don't usually come loose like that
[16:30:20] <XXCoder> Polymorphism: its a 27000 rpm grinder, it vibrates very hard lol
[16:30:30] <Polymorphism> oh xD
[16:30:38] <XXCoder> I need to get power vary thingy so I can lower rpmn
[16:31:13] <jdh> I need to hook up the rs485 to my vfd. I crunched a bit last night because I forgot to hit start
[16:34:32] <XXCoder> ow
[16:35:07] <XXCoder> I dont understand this process https://www.youtube.com/watch?v=qPnSb3yzytE
[16:35:15] <XXCoder> isnt there simplier way
[16:36:20] <Polymorphism> this guy has great videos
[16:37:41] <SpeedEvil> XXCoder: I've not watched it - but it's using CO2 to fix silica sand into a mold?
[16:37:54] <XXCoder> SpeedEvil: yeah that part I understood from last time
[16:37:57] <SpeedEvil> that method works well, but there are many others
[16:38:06] <XXCoder> is moldmaking part that puzzles me
[16:38:11] <SpeedEvil> why?
[16:38:28] <XXCoder> dunno, seemed to me that there could be easier method
[16:38:35] <SpeedEvil> you can do many things - including CNC cutting a foam thingy
[16:38:40] <XXCoder> could be wrong though, that shape is quite complex
[16:38:50] <SpeedEvil> then you just pour the Al straight in
[16:39:02] <SpeedEvil> http://3dtopo.com/lostPLA/
[16:39:09] <XXCoder> thats lost casting method and yeah its a nice way from what I see too
[16:39:12] <SpeedEvil> https://en.wikipedia.org/wiki/Lost-foam_casting
[16:40:26] <Polymorphism> nice link
[16:45:19] <malcom2073> I imagine the amount of time they spend fiddling with getting the sand to settle by poking it would be reduced with a shaker table?
[16:46:02] <malcom2073> I want to get a foundry, once I get around to putting a concrete floor in the barn I'ma do that
[16:46:05] <SpeedEvil> To a limited degree, yes
[16:46:07] <SpeedEvil> https://www.youtube.com/watch?v=N3iE1_30ZU4
[16:47:34] <Polymorphism> fire good
[16:47:46] <Polymorphism> why not mill it from the aluminum?
[16:47:48] <Polymorphism> serious question
[16:47:56] <malcom2073> cost
[16:48:05] <malcom2073> A block of aluminum that size vs the scrap metal you have laying around
[16:48:32] <malcom2073> Or in an industrial setting: The block of auminum that size vs foundry billets of smaller size for casting
[16:48:51] <Polymorphism> I see
[16:48:56] <XXCoder> yeah and some parts there must be certain grain structure and you cant get that with casting
[16:50:37] <malcom2073> Haha though that guy didn't use a foundry, he used a bunch of sticks in his backyard
[16:50:38] <malcom2073> nice
[16:51:04] <XXCoder> theres video of guy literally using ground to make kiln
[16:51:08] <XXCoder> alum quality was... shit
[16:51:27] <SpeedEvil> Plus - cleaning up the outer 1mm is way wasier than milling a complex shape
[16:52:04] <SpeedEvil> It's a tradeoff.
[16:52:22] <SpeedEvil> you can go all the way up to investment casting - which can get really, really fine details from wax
[16:57:29] <CaptHindsight> cave men used wax and had to burn the wax out of the investment over the course of several hours
[16:57:49] <Deejay> gn8
[16:58:14] <CaptHindsight> modern man uses water soluble polymers that rinse out of the investment in minutes
[17:08:03] <enleth> pcw_home: I just realized I can take a peek inside the Heidenhain control that uses those sin/cos encoders, the block diagram even lists 3 EXEs as subcomponents. Sure enough, each encoder is handled by an RC4157, it's a quad bipolar opamp, 17MHz unity bandwidth, 8V/µS slew rate, 400nA input bias current, 100nA input offset current
[17:08:38] <enleth> Nice bandwidth, the rest seems rather casual
[17:14:05] <SpeedEvil> 17MHz is Gain-bandwidth, not bandwidth
[17:14:14] <SpeedEvil> gain of 100, and you're at 170khz
[17:15:35] <enleth> yes, I am aware of that
[17:16:05] <enleth> it's still quite impressive for a 1970s chip
[17:16:28] <XXCoder> SpeedEvil: nice link and video, thanks
[17:17:09] <XXCoder> that pour looks a little sloppy but works I guess
[17:23:38] <pink_vampire> hi
[17:23:43] <XXCoder> hey
[17:24:27] <enleth> pcw_home: it gets pretty fun after the opamps: output goes to LM339 voltage comparators, then to a bunch of 74 gates, latches and stuff, then it reaches an Intersil IM5610 256bit ROMs (they have "1.95" version stickers), some NEC programmable timers, some more 74 stuff and digital bus transceivers
[17:24:29] <Duc> hello
[17:24:50] <enleth> No uC whatsoever on the whole EXE board
[17:24:55] <XXCoder> gonna go grab some stuff for parties. yayyyy. :P
[17:24:57] <XXCoder> laters
[17:32:57] <Polymorphism> tell the chinese give me my money
[17:32:59] <Polymorphism> ttyl XXCoder
[17:39:48] <pcw_home> enleth yeah the simple 5X interpolators (EXE602) are just flash ADCs made from LM339s feeding a ROM
[17:40:50] <pcw_home> we intended to do the same thing with a DSPIC or STM32 bot with a 64K ROM
[17:41:09] <pcw_home> s/bot/but/
[17:41:57] <enleth> pcw_home: heh, dsPIC is on my list of things to consider for this
[17:42:19] <enleth> I hate PICs but I have to admit it's hard to find anything that would compete with a dsPIC in this price range
[17:43:42] <pcw_home> STM32s are competitive now ~$3.00 for ucontroller with multiple 12 bit 5 MS/sec ADCs
[17:44:31] <pcw_home> (you cant buy standlone ADCs that cheap AFAIK)
[17:45:24] <pcw_home> we were targeting DSPics because we were more familiar with their bugs :-)
[17:49:51] <enleth> yeah, I noticed there are some on 7i77
[17:52:44] <enleth> now I'm also seriously considering being a cheap lazy bastard and tracing those built-in EXEs in the TNC to copy them
[17:53:07] <enleth> up to the LM339s
[17:54:20] * Polymorphism rips out hair
[17:55:11] <enleth> it's faster and less painful to shave
[17:55:46] <enleth> (makes sense in context, in case someone has non-empty ignore lists)
[17:56:06] <Polymorphism> xD
[17:57:22] <Sync> enleth: there are schematics on the interwobs
[17:57:52] <enleth> Sync: for such interpolators? It didn't even occur to me to look, actually.
[17:59:24] <Sync> pcw_home: you can just run the atan in the stm32, it is plenty fast enough
[17:59:33] <enleth> or rather - it did but all I found were *voltage*-signaled interpolators for 1Vpp
[18:00:21] <enleth> the ones I have here are 15-35µA and require transimpedance amplifiers for the input stage
[18:00:53] <Sync> yeah the current ones are a bit different, but you can just translate between all of the analog "protocols"
[18:02:19] <enleth> That's the hardest part for me anyway, the digital part is something I can handle with little trouble
[18:03:23] <enleth> I know enough about analog circuits to know that there are factors I don't know about, so it's a bit outside my comfort zone to design amplifiers with µA input signals
[18:08:22] <pcw_home> plain atan might be OK but you dont have a lot of time if
[18:08:24] <pcw_home> you are generating good quadrature
[18:08:25] <pcw_home> (most ucontrollers have no low overhead way to do this at MHz rates)
[18:12:51] <pink_vampire> hi
[18:13:16] <pink_vampire> how can I add arduino nano to eagle?
[18:13:21] <BeachBumPete> hello :D
[18:13:33] <pink_vampire> hi BeachBumPete
[18:14:15] <BeachBumPete> Hey Pink hope you are well and sorry I don't know a singlething about arduino or eagle
[18:16:25] <djdelorie> pcw_home: my bldc controller never calls atan... problem solved! :-)
[18:18:24] <pcw_home> Not my favorite since its needs compares to decide whether you want atan of X/Y or Y/X
[18:21:45] <Jymmm> or SPF50 of xyyxx/xxyxyyxyx
[18:21:46] <Sync> pcw_home: yeah, if you generate quadrature, that might be an issue, we are just using it for feedback, so we got lots of time doing it
[18:21:59] <pcw_home> we do our divide (for PID gain scheduling) in the 8I20 with a lookup table
[18:22:21] <Sync> we have a small issue with using sin/cos interpolation directly at high speeds
[18:22:31] <Sync> but there you can just use the zero crossings for quadrature
[18:22:33] <XXCoder> back for now heh
[18:22:37] <djdelorie> I have a sin/cos lookup table for the fast loop, but the mcu does floating point at 80 mhz :-)
[18:22:52] <Sync> because at high speeds the interpolation is irrelevant
[18:23:17] <Tom_itx> pink_vampire, have you checked to see if there's an eagle lib for it?
[18:24:42] <pink_vampire> Tom_itx: I'm download it now
[18:24:55] <Tom_itx> https://github.com/cyberlink1/Arduino-Eagle-Cad-Library
[18:25:02] <Tom_itx> that didn't take long to find
[18:25:36] <pcw_home> Yeah the IC-Haus interpolators have a something like 70 Ms/sec A-D frontend so are still pretty decent at higher speeds
[18:25:53] <Sync> yeah, it doesn't matter for us
[18:26:01] <pcw_home> probably quite a bit of oversampling also
[18:26:13] <Sync> as soon as the speed drops, you get interpolated values again
[18:26:19] <pink_vampire> that what I download :)
[18:26:35] <Tom_itx> that's also cheating.... you should make the lib yourself
[18:26:39] <Tom_itx> good practice
[18:46:29] <pink_vampire> I can't find terminal block
[18:51:45] <Tom_itx> don't have eagle on this pc
[19:05:55] <Tom_itx> what terminal block are you looking for?
[19:06:01] <Tom_itx> check pinheader
[19:08:17] <JT-Mobile> Hola
[19:08:28] <Tom_itx> hey jt
[19:09:11] <Tom_itx> pink_vampire, or one of the con-XXX.lbr files
[19:10:09] <pink_vampire> http://store.iteadstudio.com/index.php?main_page=product_info&products_id=233
[19:18:58] <Tom_itx> iirc phoenix has some like that
[19:19:39] <Tom_itx> check one of the con-phoenix libs
[19:20:11] <Tom_itx> depending on the pin spacing
[19:21:56] <Tom_itx> is that .1" pin spacing?
[19:32:08] <Tom_itx> duh, the eagle lib is listed on that page
[20:16:50] <Tom_itx> anyone know of a pci parport card known to work with linuxcnc?
[20:27:04] <jdh> there is a list of cards or chipssets on a wiki page
[20:33:43] <pcw_home> I though the standard NetMOS/MOSChip cards were fine (just no EPP)
[20:33:50] <pcw_home> thought
[20:50:53] <enleth> http://i.imgur.com/U6WP7W2.jpg - do you have an idea what those lumpy red components might be? *all* encoder lines except GND have one of those in series directly by the connector. Even 5V DC for the lamp, so they are certainly not capacitors. No markings whatsoever. Much fatter than resistors.
[20:51:15] <enleth> Polyfuses? I'm not sure if they were a thing back in 1981 or so
[20:51:39] <pcw_home> probably chokes
[20:51:47] <SpeedEvil> They may be high power resistors
[20:51:57] <SpeedEvil> intended to accept accidental connection to high volts
[20:52:14] <SpeedEvil> measure acrtoss them with a dMM
[20:52:27] <SpeedEvil> IF the lamp goes through them, probably chokes, yes
[20:52:46] <SpeedEvil> Is there a cap across them?
[20:53:59] <SpeedEvil> you could trace out a few channels to make it clear
[20:54:17] <enleth> 0.3-0.4 ohms each
[20:54:23] <enleth> 5V to the lamp has one too
[20:55:03] <enleth> no caps *across* them, only 330pF from the "inside" leg to ground on each
[20:55:38] <enleth> I think I have an inductance meter somewhere, not sure if using it in-circuit in this case makes sense
[21:03:00] <enleth> 1-2µH, although that was the very limit of the only DMM I have that can measure inductance, 2mH being the lowest range available
[21:05:30] <enleth> measured the ones on the 5V line, the connector pin is floating, there don't seem to be any other inductors on the board, so I guess I can assume those are 2µH chokes for now
[21:06:15] <enleth> I'll have to desolder one and measure it properly to be sure later
[21:07:43] <Tom_itx> or at least one leg
[21:08:27] <enleth> there's only 8mm of trace and an unplugged connector pin on one leg of each already, nothing else
[21:08:46] <enleth> unless you meant the other leg specifically
[21:09:08] <enleth> but I'd rather desolder both to avoid bending them than fiddle with just one by bending the other
[21:09:24] <Tom_itx> could be the safer route
[21:55:22] <enleth> 1% 50PPM/°C resistors in the feedback loop