#linuxcnc | Logs for 2015-07-30

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[02:10:02] <Deejay> moin
[02:17:54] <Crom> getting 2 smoothie boards a 4axias for the reprap and a 3 axis for the laser
[02:42:13] <archivist> why not use linuxcnc!!!!
[04:01:38] <malcom2073> archivist: Linuxcnc doesn't work great for 3d printers, since the 4th axis extruder is coordinated. Machinekit does ok though
[04:10:37] <trentster> archivist my flatbar stock arrived today busy redesigning the gantry at the moment. http://monosnap.com/image/lOFkHpUG9C9oSg31WD2wt7wc2fiTCR
[04:10:48] <trentster> Any suggestions before I start machining them?
[04:11:18] <trentster> You think I should reduce the height to 400mm high vs 500mm ?
[04:12:55] <Sync_> probably, and leave the u channel out, and rather build an enclosed profile
[04:12:59] <Sync_> that will be much stiffer
[04:17:56] <trentster> Sync_: like a box
[04:20:19] <fenn> i thought you already had gantry uprights
[04:20:41] <fenn> there are no ribs on the diagram, so what are you doing now?
[04:21:40] <fenn> oh its in the center
[04:22:33] <fenn> so the uprights have an effective thickness of 25mm
[04:22:52] <trentster> fenn: currently looks like this - its a frankenstein https://monosnap.com/file/sLxh83DTAUADmKMt5FMAqp6RUEtRlX.png
[04:23:09] <trentster> thats 100mm wide and 10mm thick plate
[04:23:10] <fenn> er, 37mm
[04:23:31] <fenn> what is the new flat stock for?
[04:23:50] <fenn> you have no other way to machine things besides the existing router?
[04:24:15] <trentster> the bottom is kinda macguyvered all was manually measured and drilled etc, screw holes are not perfect that why new gantries thicker stronger and will be cut via cnc for precise holes etc
[04:24:47] <trentster> fenn: no mate unfortunately not, before I had the router I had to do it all with hand tools and drill press
[04:24:54] <trentster> So its a step up for me
[04:25:01] <fenn> ok don't go overkill on "precision" leave enough to align the parts correctly
[04:25:11] <fenn> enough clearance
[04:26:06] <fenn> i think the u-channel is not much of an improvement
[04:27:35] <fenn> anyway this is all a learning experience so go have a blast
[04:28:06] <trentster> fenn: oh really - archivist said anything there would be a major improvement thats why I bought the channel
[04:28:31] <fenn> well it's just not as good as it could be
[04:29:00] <trentster> fenn: yeah its fun - and I have learned a ton. Probably could have saved a bit if I bought a chinese cheapie tho and retrofitted the electronics
[04:29:06] <Sync_> trentster: yes
[04:29:59] <trentster> When you say "don't go overkill on "precision" you mean make holes bigger than they need to be for a bit of wiggle room?
[04:30:07] <fenn> yes
[04:30:25] <fenn> do you have more 3060 t-slot? you could use that instead of the u-channel
[04:30:49] <trentster> interesting, ok, I was only planning on doing that for stepper mount holes - but will ponder it for the others then
[04:31:08] <fenn> then it would be 60+12 = 72mm thick
[04:32:17] <trentster> fenn: I have a ton of spare 25mm x 25mm aluminium extrusion like 20 metres of it - I think you guys call it series 10
[04:32:31] <trentster> I dont have any spare 3060 tho - would have to buy
[04:33:37] <fenn> that would just be the same stiffness as the u-channel
[04:33:43] <trentster> Sync_: your yes there, you agreeing chinese machine would have been a better way to go?
[04:33:51] <trentster> Like a 6040
[04:35:07] <Sync_> probably
[04:36:01] <trentster> fenn: I may have some smaller peices of 3060 around, what height could I get away with there as minimum you think ?
[04:36:14] <trentster> like 250mm or half gantry height be ok?
[04:37:34] <fenn> you were talking about reducing the height anyway right
[04:37:40] <trentster> and if I use them I assume just drill em through on each 30 channel line and use a tight space like every 40mm ?
[04:38:13] <trentster> fenn: I was asking for advice on reducing the height yes - as in do you think I should, shouldent, pros cons etc
[04:39:01] <fenn> people tend to make gantries too tall when they mostly do sheet work
[04:39:14] <trentster> I guess my question should be should the 3060 ribs run as high as possible , obviously this can not be the whole height as it would interfere with stepper mount position
[04:39:35] <fenn> your y axis carriage sticks out a bit and could be shortened i guess 75mm
[04:39:52] <fenn> that would require rebuilding it though, so probably not worth it
[04:41:24] <fenn> yes the 3060 ribs should go up as high as possible, ideally all the way up
[04:42:16] <fenn> the rib doesn't have to be in the center, it can go along the edge of the upright (edge farthest from spindle is best because it's closer to the y axis rail mounting point)
[04:44:18] <fenn> the middle 3060 beam in the y axis doesn't seem to be contributing anything to the structure? is it bolted along the back side somehow?
[04:45:51] <trentster> no its not bolted on the back side
[04:45:58] <trentster> just to the gantry sides.
[04:46:22] <trentster> its a bit of a pain actually cause I always have to remove it to get to the screws for the ballscrew mounts
[04:46:46] <fenn> i would remove it and find some other way to mount the ballscrew radial bearing
[04:47:03] <fenn> and then you have extra building material too
[04:52:01] <trentster> fenn: thanks for that idea - makes sense - especially if you feel the middle 3060 is not adding any structural benefit
[04:53:12] <fenn> try making a scale model of the machine out of rubber or foam, you will quickly get an idea of where the weak points are
[04:53:52] <XXCoder> heys
[04:54:29] <trentster> fenn - ha ha very funny
[04:54:37] <trentster> maybe I should make it out of Jello
[04:54:53] <fenn> also you want to minimize the mass of the gantry and keep the center of gravity low to reduce the tendency to rotate when accelerating
[04:55:15] <fenn> no i'm serious, it's much easier to poke at a scale model than to dick around with FEM simulations all day long
[04:55:50] <trentster> Yeah - both are exercises for the patient - which I try and be - but often am not ;-)
[04:56:02] <XXCoder> also, reality is the best simulator of all
[04:56:11] <XXCoder> 100% compitable with reality
[04:56:18] <trentster> he yeah
[04:56:49] <trentster> XXCoder: I have a bucket of failures that can attest to the reality paradigm
[04:56:53] <trentster> ;-)
[04:57:10] <XXCoder> :)
[04:59:48] <trentster> fenn: to reduce weight should I reduce Z axis plate thickness and height, I have those 6 SCHEEBERGER MN14-G3-V0 Linear Bearing Slide Rails arriving anyday now - so I have to rebuild Z anyway
[05:00:10] <trentster> and will be removing the fully supported rails there
[05:01:30] <fenn> if you're redoing the z axis then you should shorten the height of the uprights and make sure the whole y-carriage and z-axis assembly doesn't hang down any farther than the bottom of the y-axis ways
[05:03:12] <fenn> it shouldn't stick out at all
[05:03:30] <fenn> only the spindle
[05:04:04] <trentster> fenn thanks for the ton of grade-a info pls check your PM
[05:09:43] <trentster> fenn: yeah I wanted to do that but I inherited a ballscrew for the Z from someone and decided to use it to save a buck - which was not smart
[05:09:54] <trentster> its like 400mm high
[05:10:07] <fenn> jello router 2016 design challenge
[05:10:11] <trentster> The only way to reduce the height is to toss it and but something smaller
[05:10:23] <XXCoder> I need to find use for my sbr20, 16, 12 rails. lol
[05:10:28] <XXCoder> and ballscrews for em
[05:11:10] <fenn> the z axis shouldn't stick out on the bottom, it's ok if it sticks out on the top
[05:11:11] <trentster> XXCoder: did you also get rid of your SBR rail and get linear stuff?
[05:11:22] <XXCoder> no
[05:11:29] <XXCoder> I planned to build wood frame for my router
[05:11:40] <XXCoder> but decided to get kit after I got better job
[05:11:54] <trentster> fenn: do you have a url or pic of what you mean, its easier to visualize somethign when you see an e.g.
[05:12:02] <fenn> one moment
[05:13:21] <trentster> yup - thanks
[05:14:45] <trentster> I am so excited to get these Schneebergers Linear Bearing Slide Rails - I have never touched linear bearing stuff before. Only SBR rails
[05:14:58] <trentster> Really excited to see how they compare
[05:15:39] <XXCoder> from what I understand they are definitely more rigid
[05:18:26] <trentster> and less bulky
[05:18:38] <trentster> the SBR stuff takes up so make darn space
[05:19:14] <XXCoder> yeah
[05:19:23] <XXCoder> I just dunno what to do with mine
[05:19:36] <XXCoder> maybe want to sell em but I suck on selling those
[05:20:05] <trentster> make a laser cutter cnc machine with them
[05:20:12] <XXCoder> dunno
[05:20:23] <XXCoder> I can just get laser module and use my existing cnc router
[05:20:51] <fenn> trentster: http://fennetic.net/irc/gantry_z_fix.png here i shortened and widened the upright, added a 3060 rib, and moved the z axis up a bit so it doesn't hang down when fully retracted. this is a side view with the z axis moved all the way up
[05:22:10] <trentster> thanks so much fenn - having a look now
[05:23:17] <fenn> the dashed line is just the height at which the y axis ways would bang into something
[05:23:49] <trentster> makes sense except for the rib which can not go there as thats where the 3060 extrusion bolt/screws go
[05:24:19] <trentster> unless I get extra long screws and got right through both the 12mm plate and the 3060 extrusion for the bolting
[05:26:16] <jthornton> a new low for me 15.328 571 429 stone
[05:29:37] <DaPeace> helloooo :-)
[05:29:50] <trentster> fenn: so in a nutsell http://monosnap.com/image/HguFxADWkOzKAPaTHHmdPIYKZ76BQH
[05:29:55] <trentster> right?
[05:30:34] <trentster> and then reduce the height of the gantry so its the correct height above the table?
[05:30:44] <fenn> yep
[05:30:46] <DaPeace> is there anybody that could give me a hint how i could make an encoder-input "slower"? Ive added an quadrature encoder-poti to my spindle-overwrite and when i turn it its from 0-100 in 2 klicks.. way too fast for using it correctly
[05:32:42] <fenn> DaPeace: change encoder.N.position-scale in HAL
[05:33:35] <DaPeace> ive tried that already. could i put the config to pastebin so you could fly over it and tell me what im doing wrong?
[05:34:06] <fenn> i'll look but i can't guarantee anything
[05:34:24] <DaPeace> http://pastebin.com/2nyq0Uhr
[05:34:35] <DaPeace> encoder.1. is the one..
[05:34:57] <DaPeace> ive tried 50000, 5000, 0.5 but nothing really helps...
[05:35:30] <DaPeace> custom_postgui -> http://pastebin.com/gyjwxzj8
[05:37:23] <jthornton> the gommacopy guy hangs on the forum
[05:37:34] <fenn> "net spindleenc-counts encoder.1.counts gmoccapy.spindle-override.counts" <- this line uses the raw counts, not the position value
[05:38:22] <trentster> fenn: and you dont think the fact that the top aprt of the z axis will be 200mm higher is a big problem
[05:38:41] <DaPeace> what signal do i need to use for the override?
[05:38:45] <trentster> wont the ineretia now want to throw the top forward
[05:38:50] <trentster> like a flicking motion
[05:39:11] <fenn> trentster: the mass of the stepper motor or whatever is a lot smaller than the mass of the entire y axis way assembly
[05:39:49] <fenn> more importantly it doesn't affect the rigidity at all
[05:40:12] <fenn> whereas going up and then down again will add a lot of unnecessary spring to the structure
[05:40:25] <trentster> ok thanks - makes sense
[05:40:59] <trentster> gonna have to rename cnc "Tyson" now as he is gonna be short and squat and strong after this conversation.
[05:41:12] <trentster> previous machine nickname was "squeeky"
[05:41:42] <XXCoder> my machine havent cut anything so no name
[05:42:00] <DaPeace> hmm.. using the encoder.1.position is not possible with gmoccapy.spindle-override.counts because of different type float vs s32 :-/
[05:42:05] <trentster> XXCoder: "johndoe" ?
[05:42:11] <XXCoder> lol
[05:42:37] <fenn> DaPeace: i've been away from linuxcnc for a while and haven't looked at gmoccapy yet but it looks like it does the encoder stuff internally but it can also be controlled with the pin "gmoccapy.spindle-override-value"
[05:43:13] <fenn> so you can connect the encoder.1.position to gmoccapy.spindle-override-value
[05:43:42] <DaPeace> ahh direct-value is the name of that pin..
[05:44:34] <fenn> i don't get why they would let you connect the raw encoder count to the override control in the first place...
[05:44:38] <jthornton> http://www.linuxcnc.org/docs/2.7/html/gui/gmoccapy.html#_velocities_and_overrides
[05:45:06] <trentster> fenn: thanks for your advice mate - much appreciated
[05:45:37] <fenn> good luck trentster
[05:46:25] <trentster> next thing I am going to teach myself is how to weld aluminium
[05:46:34] <XXCoder> heard that is hard
[05:46:37] <trentster> I think thats a good interim solution
[05:46:50] <trentster> thats what the shopbot uses and its pretty strong
[05:47:22] <fenn> why weld aluminum when you can weld steel
[05:47:27] <trentster> XXCoder: yeah its particularly hard if you have never welded anything before - aka trentster :P
[05:47:35] <XXCoder> lol
[05:48:04] <DaPeace> fenn: ive now added the encoder.1.position to gmocappy.spindle-override.direct-value, checked the halshow which shows a change of that value but the slider is not moving. :-/
[05:48:26] <trentster> fenn: I have heard its a nightmare getting steel level and true etc, it is not extruded perfectly clat/level like aluminium is
[05:48:31] <trentster> but its way strionger
[05:48:36] <trentster> of course.
[05:49:04] <XXCoder> if you has large mill its better to facemill surface for nice and stright
[05:49:22] <XXCoder> aluminium is not perfectly stright either just not as problemic
[05:49:55] <trentster> yeah If I had a facemill that could face steele 99% of my other issues would be over ;-)
[05:50:46] <jthornton> trentster, your trying to connect an encoder to spindle speed override in gmoccapy right?
[05:50:58] <DaPeace> thats me i think
[05:50:59] <DaPeace> :-D
[05:51:00] <trentster> its time to starting making some friends who happen to be machinists who have access to heavy equipment :-)
[05:51:16] <fenn> DaPeace: i don't see anything in the docs for gmoccapy with that name, could you show the output of halcmd show pin
[05:51:22] <trentster> Thats half the battle won - right there.
[05:51:39] <trentster> that or carry six packs of cold beer around industrial areas
[05:51:43] <trentster> :P
[05:51:48] <jthornton> DaPeace, the manual says to connect to gmoccapy.spindle-override-counts
[05:52:22] <DaPeace> 27 bit IN FALSE gmoccapy.spindle-override.analog-enable
[05:52:22] <DaPeace> 27 bit IN TRUE gmoccapy.spindle-override.count-enable
[05:52:22] <DaPeace> 27 s32 IN 0 gmoccapy.spindle-override.counts
[05:52:22] <DaPeace> 27 float IN 0 gmoccapy.spindle-override.direct-value <== spindleenc-counts
[05:52:22] <DaPeace> 27 bit IN FALSE gmoccapy.spindle_at_speed_led
[05:52:23] <DaPeace> 27 float IN 0 gmoccapy.spindle_feedback_bar
[05:52:29] <DaPeace> yes i know jthornton
[05:52:58] <DaPeace> but my problem is that i need to scale the value because the slider is moving in 20%-steps..
[05:53:22] <DaPeace> and i cant connect encoder-position to encoder-counts..
[05:53:39] <DaPeace> because one is float and the other s23 i think..
[05:54:00] <fenn> is your signal spindleenc-counts connected to encoder.1.position?
[05:54:59] <DaPeace> yes. i have net spindleenc-counts encoder.1.position gmoccapy.spindle-override.direct-value
[05:55:23] <DaPeace> but that does not work. when i change direct-value to counts its working but in 20%-steps
[05:57:43] <fenn> gmoccapy.analog-enable = HAL_BIT ; Must be True, to allow analog inputs
[05:58:05] <DaPeace> ok. i will see if that would work
[06:00:14] <jthornton> I can't get the slider to move in the sim
[06:01:20] <DaPeace> ive set analog-enable to true and connected encoder.1.position to gmoccapy.spindle-override.direct-value and now the slider is moving from 50-100% with one click. i will now play around with the scale-value.. maybe thats now the problem.
[06:01:36] <DaPeace> what range is analog-signal expecting? any hint?
[06:02:03] <jthornton> direct value is a float so you might need to scale it
[06:02:27] <fenn> 0 to 1 i think
[06:02:47] <jthornton> .1 goes to 57%
[06:03:55] <jthornton> the input value and the slider value don't make any sense to me
[06:04:10] <fenn> DaPeace: also make sure you don't still have anything connected to gmoccapy.spindle-override.counts
[06:04:37] <DaPeace> no. i only connected that one alps-poti but its getting better and better now when i adjust the scale-value :-D
[06:04:46] <DaPeace> thank you for your help
[06:04:51] <jthornton> if I set direct value to 1 the slider goes to 120
[06:05:02] <DaPeace> yes. i scaled to 100 now
[06:06:02] <DaPeace> crazy shit.. its working :-D
[06:06:10] <fenn> someone should file a bug report for bad usability... i don't see any reason to accept raw encoder counts as an imput to the gui
[06:06:30] <DaPeace> another question.. does anyone have a hint how i could enable and disable the spindle with one button?
[06:06:52] <jthornton> a toggle
[06:07:50] <fenn> a hardware button? gmoccapy looks like it has that already
[06:07:56] <DaPeace> that was my first thought.. but couldnt really handle that.. i could add the toggle but than it tells me its already connected..
[06:08:34] <DaPeace> there are buttons in the gui. thats right
[06:09:30] <DaPeace> but i would love to have a quick access without moving the mouse. the encoder i use have a switch too. so it would be easy to use the switch for spindleoverride to enable and disable the spindle manual...
[06:10:34] <fenn> oh i guess this was how you're supposed to scale the spindle override? http://wiki.linuxcnc.org/uploads/gmoccapy_settings_hardware.png
[06:10:40] <jthornton> DaPeace, the guy that made gmoccapy is on the forum and I'd bet he could answer all your questions
[06:12:17] <DaPeace> fenn no. ive already set the spindle-speed from 0-12000. i only wanted that the encoder is not setting the value from 0-100% in just one mm of turning it. that works now with the analog value and scaling the signal.
[06:12:18] <jthornton> ah that page has halshow on it
[06:13:09] <DaPeace> jthornton: my problem is that i need to connect the button to the spindle-forward-pin and thats already in use by the gui..
[06:16:55] <jthornton> yes, I see that motion.spindle-forward is connected to signal spindle-fwd
[06:17:33] <fenn> multiple sources of control is always annoying to deal with
[06:17:59] <jthornton> an 'or.2' could be used
[06:18:30] <fenn> xor?
[06:18:43] <fenn> a regular or would require pressing both buttons
[06:20:15] <DaPeace> if connected a toggle but now i have the problem that its only enabling the spindle but not disabling..
[06:20:35] <jthornton> I don't know what a regular or is... http://www.linuxcnc.org/docs/2.7/html/man/man9/or2.9.html
[06:20:44] <fenn> DaPeace: try pressing the on-screen spindle-off button and see if it turns off
[06:20:53] <jthornton> or2 if one input is on the output is on
[06:21:16] <jthornton> lol I can't get out of the settings screen
[06:22:13] <jthornton> DaPeace, that would be another good question for the forum
[06:22:42] <fenn> jthornton: or2 does a regular or operation, xor2 does an xor operation
[06:23:16] <fenn> xor = exclusive or
[06:23:29] <fenn> it was probably a dumb idea anyway
[06:27:26] <jthornton> after reading the or2 and xor2 man pages I understand how they work
[06:28:00] <jthornton> I would think that or2 would be the one but Norbert is the expert on gmoccapy
[06:28:35] <fenn> they are both bad solutions but i don't know how to implement the correct solution
[06:29:07] <fenn> you would have to dig around in gmoccapy to get the on-screen spindle control buttons into hal
[06:30:20] <fenn> and then you could or2 the hardware and software button together
[06:31:03] <DaPeace> fenn the off-button in the gui is working
[06:31:46] <DaPeace> problem is that the syntax of linuxcnc is really hard to understand.. im not sure how to implement that by myself :-/
[06:32:36] <jthornton> DaPeace, did you read the basic hal tutorial? there is only a few hal commands
[06:33:18] <DaPeace> yes ive already fly over that. maybe i should do that again..
[06:34:51] <jthornton> do you use the forum?
[06:35:33] <DaPeace> yes sometimes. buts it takes some time to get answers and some answers a one-liners.. thats why i try to ask here before spamming the forum :-D
[06:36:04] <jthornton> your best resource for gmoccapy is the gui section of the forum
[06:36:19] <jthornton> Norbert wrote gmoccapy
[06:37:47] <DaPeace> Yea i know. ive already searched the forum a lot and asked some questions there too. i will try out by myself first. im reading the basic-hal-section right now.. maybe i can figure that stuff out by myself...
[06:38:42] <fenn> it would be nice if hal had a circuit schematic gui but nobody has made that happen
[06:39:06] <DaPeace> yes. or a not sooo technical wiki with more examples.
[06:39:06] <jthornton> I thought someone did that
[06:39:26] <fenn> there was a script to import it into eagle but it wasn't interactive
[06:39:52] <fenn> it just imported a hal config file and displayed it as pins, and you could export it as a hal file
[06:40:03] <DaPeace> using eagle would be too much for me too :-D i use fritzing for making my pcbs
[06:40:04] <jthornton> I couldn't remember the exact thing it did
[06:42:09] <fenn> yeah something like fritzing would be a good interface for hal
[06:42:54] <fenn> puredata does something like this
[06:42:57] <fenn> and labview
[06:43:53] <archivist_herron> trentster, add u to flat side to make a box...win
[06:44:39] <fenn> archivist_herron: the u is only 25mm x 40mm
[06:46:58] <trentster> archivist: thats what I was planning on doing but fenn said it would make little to no difference
[07:04:26] <trentster> fenn: to attach the 3060 rib for strength should I drill and tap the holes or rather drill thru and use a nut on the other side with a washer?
[07:04:55] <trentster> I mean drill and tap the 12mm plate vs attach via nuts
[07:06:33] <fenn> either will work but tapping is prettier
[07:07:02] <fenn> i thought you would use the t-nuts
[07:07:59] <fenn> um, just use the t-slot as it was intended to be used
[07:08:47] <fenn> nevermind about tapping
[07:18:08] <DaPeace> fenn: i got it working. thank you for helping :)
[07:18:39] <DaPeace> jthornton: thank you too :-)
[07:19:41] <Tom_itx> looks like i'ma gonna get wet... http://www.intellicast.com/National/Radar/Current.aspx?animate=true&location=USKS0523
[07:20:41] <jthornton> pretty far from me
[07:21:09] * jthornton heads for the woods to try out my new bug be gone socks
[07:33:00] <trentster> fenn ok thanks
[08:14:07] <trentster> fenn: still around?
[08:14:34] <trentster> This is what I have done - revision based on your suggestion and 3060 ribs http://monosnap.com/image/qOsjLVZ3yP3dTLlypb82bmDZM8rCO7
[08:47:13] <fenn> trentster: the 3060 should go the other way, you want to make a T section
[08:51:12] <fenn> or an L section
[08:51:23] <trentster> fenn you mean the 3060 crossbeams?
[08:51:35] <trentster> should be orientated the other way?
[08:52:01] <fenn> the ribs only need one row of holes because it should be rotated 90 degrees
[08:52:24] <fenn> also i dont see how it can go there because the stepper motor is in the middle
[08:52:25] <trentster> really?
[08:53:56] <trentster> like this ? http://monosnap.com/image/aFjZcWqq8ydq7P9vt39cOcHW5V4UdA
[08:54:24] <trentster> is the way I have it you want it like this rather 1 sec just miving model around
[08:54:47] <fenn> no
[08:54:54] <fenn> nice model btw
[08:55:35] <trentster> http://monosnap.com/image/ipqvX0tE9tLBDkozyYOsWsQi1vaCmt
[08:56:11] <trentster> thanks - still getting the hang of sketchup but its easier than fusion360 right now
[09:01:30] <fenn> i was thinking something like this: http://fennetic.net/irc/gantry_cad_fixed.png
[09:02:34] <fenn> there is still the problem of stepper motor being in the way though
[09:03:06] <trentster> hmm interesting you have given the machine "big flap ears"
[09:11:10] <fenn> now that the uprights are shorter this might be overkill though
[09:11:27] <trentster> I understand your logic fenn but it adds some serious bulk to the machine width
[09:11:46] <trentster> If you think its better that way then I go with your opinion tho
[09:12:25] <trentster> how thick are commercial gantries on machines this size they use steel welded boxes don't they?
[09:13:42] <fenn> this machine looks pretty sturdy :) http://westerncncinc.com/wp-content/uploads/2010/11/DMS-3-Axis-Large-Format-Gantry.jpg
[09:14:51] <fenn> those are box sections with motors and gearboxes inside
[09:15:51] <trentster> fenn: I said a machine of a similar size - no "Machinezilla"
[09:16:02] <trentster> thats like comparing a scooter to a 747
[09:17:43] <fenn> this one looks pretty similar to yours http://www.drivesystemsgroup.com/images/3%20axis%20gantry%20250dpi.gif
[09:18:09] <fenn> i am just looking at a google image search but there is a lot of diy hobby stuff mixed in
[09:19:08] <trentster> thanks I see what you are trying to do with the 3060
[09:29:13] * fenn sleeps
[09:33:20] <trentster> fenn: thanks - rest well
[09:47:22] <archivist_herron> /me reads the scroll back and see fenn has explained the web/rib
[09:47:35] <archivist_herron> been out and about today
[09:48:22] <archivist_herron> your rails are providing a similar function to the top cross member
[09:49:18] <archivist_herron> pick up a ruler, bends it, note which way is stiff and which bends
[09:50:22] <trentster> archivist_herron: yup I get that part - but I think the whole system has a weakness regardless of the web/rib used there. At least for my design
[09:51:57] <trentster> I am sure the flex will occur there http://monosnap.com/image/3zczpPy85KX7stvLnJwHIc02kqvzmq
[10:00:25] <archivist_herron> also depends how well parts are bolted to each other
[10:02:47] <_methods> interesting just got an offer from google to transfer domains and get a free year of domain registration
[10:03:05] <_methods> i guess google is declaring war on domain registrars now
[10:03:52] <archivist_herron> I host my own dns
[10:04:37] <_methods> i keep all my public stuff on servers off my home network
[10:05:17] <_methods> digital ocean droplet is $5/month
[10:05:28] <_methods> and i don't have to worry about hardware or anything
[10:05:45] <CaptHindsight> _methods: ocean based service vs cloud? :)
[10:06:08] <_methods> well i don't think they are actually in the ocean lol
[10:06:23] <_methods> ocean vs cloud though
[10:06:25] <_methods> lol
[10:08:05] <CaptHindsight> i think that they call them "cloud" based services since they are based on vapor and can vanish at any time
[10:08:22] <CaptHindsight> just a guess
[10:08:32] <_methods> yeah that's why i like them
[10:08:41] <_methods> if they're compromised i really don't care
[10:08:48] <_methods> i just wipe and spin up a new one
[10:11:28] <CaptHindsight> well I'm completely vain, when I put something online I expect it to be there 1,000 years from now
[10:12:49] <_methods> haha
[10:12:54] <_methods> that would be nice
[10:14:42] <CaptHindsight> introducing "Cuneiform" where all your data is pressed into clay and fired to lasting perfection
[10:21:57] <CaptHindsight> _methods: is this it? https://www.digitalocean.com/pricing/
[10:22:04] <_methods> yeah
[10:22:33] <CaptHindsight> even hourly plans
[10:22:37] <_methods> yep
[10:22:43] <_methods> good for jsut doin whatever real quick
[10:22:53] <_methods> testing
[10:25:13] <CaptHindsight> _methods: are all the ports available?
[10:25:25] <_methods> yeah i think all except maybe 25
[10:25:34] <_methods> they might make you wait awhile for that
[10:26:35] <_methods> yeah they do initial smtp block
[10:26:54] <_methods> just to keep spammer douche bags from doing what they do
[10:27:03] <CaptHindsight> how about 80?
[10:27:22] <_methods> yeah 80 is open
[10:27:33] <_methods> all ports are open except 25 as far as i know
[10:27:46] <_methods> and you can get 25 opened after you email them and verify
[10:28:34] <_methods> great for hosting little websites or whatever
[10:28:35] <_methods> cheap
[10:29:20] <_methods> not all their servers are on ipv6 though
[10:29:32] <_methods> so if you want that make sure you choose a location that has ipv6 enabled
[10:30:10] <_methods> they have a referral program too
[10:30:17] <_methods> i think you get a month for free
[10:30:23] <_methods> if you get referred by someone
[10:30:48] <CaptHindsight> ah so you also take the blame for my bots being hosted, kewl
[10:31:46] <_methods> ah you get a $10 credit
[10:32:04] <_methods> i don't get anything unless you spend $25
[10:32:19] <_methods> Everyone you refer gets $10 in credit. Once they've spent $25 with us, you'll get $25. There is no limit to the amount of credit you can earn through referrals.
[10:32:45] <_methods> so basically 2 free months if you want it
[10:33:00] <CaptHindsight> I've seen others that are more clunky and priced much higher
[10:33:31] <_methods> https://www.digitalocean.com/?refcode=290bd15d59fe
[10:33:39] <_methods> that's my referral code if you want it
[10:34:15] <CaptHindsight> making a note
[10:34:37] <_methods> i do all my irc on it
[10:34:58] <_methods> since irc seems to attract trouble
[10:35:00] <CaptHindsight> any gotchas except for the whole cloud thing in general?
[10:35:05] <_methods> nah it' sgreat
[10:35:25] <_methods> i've been using them for about 3 years i think
[10:35:28] <_methods> never had an issue
[10:35:41] <CaptHindsight> yeah, noticed more problems all due to IRC lately
[10:35:51] <_methods> but i really don't use it for anything mission critical
[10:36:14] <_methods> it's nice to be able to spin stuff up and test out
[10:36:20] <CaptHindsight> how is the uptime?
[10:36:31] <_methods> been great
[10:37:24] <_methods> nice to have your stuff on a real connection too
[10:37:43] <_methods> so if i'm somewhere with a bad connection i can just dl to a server on real pipes
[10:37:54] <_methods> then move stuff to the bad connection at my leisure
[10:38:38] <CaptHindsight> _methods: can you mail them a drive if you have slow uploads speeds from your ISP?
[10:38:47] <_methods> hmmm i don't know
[10:38:51] <_methods> never actually tried that
[10:39:07] <_methods> they probably would for a fee
[10:44:41] <_methods> but if you wanted it done for free i'm sure you could send it to someone you trusted on here to upload it for you
[10:45:14] <_methods> or maybe upload from a local school or something with good connection
[10:45:43] <CaptHindsight> uploading 40MB is not too difficult, 40GB is another story
[10:45:48] <_methods> yeah
[10:45:58] <_methods> 40gb even for me is brutal
[10:46:10] <_methods> and i have 50/10
[10:46:29] <_methods> download 40gb isn't too bad
[10:46:33] <_methods> but upload ugh
[10:47:32] <CaptHindsight> UPS/FEDEX is still faster and lower cost for transferring loads of data
[10:49:23] <CaptHindsight> at least in the US
[10:50:22] <_methods> cut it loose when you go to bed at night
[10:50:37] <_methods> let that connection work while you sleep lol
[10:54:51] <CaptHindsight> I'm still waiting for mesh networks to take off :)
[11:10:55] <furrywolf> I have 50/10 too! ... kB/sec. on a good day.
[11:16:42] <spline> CaptHindsight: yeap
[11:17:15] <spline> buddy of mine wrote a calc for doing just that, having racks between sf/dc. easy to calc on time/etc and depending on if you have a cap/95th, etc
[11:17:39] <spline> ship a 1tb drive/ssd vs. send a terabyte of data through the wire (providing you either meet it there or have someone there)
[11:23:38] <archivist> send data on a carrier pigeon
[11:23:57] <CaptHindsight> African or European?
[11:24:08] <furrywolf> that's swallows.
[11:33:24] <syyl> just choose one that can fly
[11:33:44] <syyl> or use a roadrunner - might be faster
[11:40:16] <archivist> RFCs 1149 and 2549
[11:41:53] <archivist> https://tools.ietf.org/html/rfc2549
[12:13:52] <jdh> anyone know of a stepper driver that takes sinking cw/ccw step input
[12:14:48] <furrywolf> any driver and a 74hc00?
[12:15:09] <furrywolf> might have some trickyness with dir hold times, though
[12:15:13] <furrywolf> or setup times, actually
[12:18:04] <archivist> an 04 to invert the signal, or get a sensible breakout that sources or sinks
[12:19:12] <jdh> such as?
[12:19:23] <furrywolf> archivist: I think he's saying he wants a cw and a ccw input, rather than a step input and a direction input.
[12:19:37] <jdh> right
[12:20:07] <archivist> they usually dont make them that way
[12:20:09] <jdh> I tried an 04.
[12:20:16] <furrywolf> it'd be easy enough to convert with glue logic, but dir hold time might be an issue.
[12:20:19] <furrywolf> dir setup time
[12:20:26] <furrywolf> meh, I'm too tired to be doing electronics.
[12:20:35] <jdh> but the +5/gnd
[12:20:52] <jdh> Lots of drivers will do cw/ccw
[12:21:14] <furrywolf> so you have a controller that outputs cw/ccw? weird. :)
[12:21:25] <jdh> yeah.
[12:21:55] <jdh> and an ancient driver that works with it
[12:21:58] <archivist> I see that form in vfds often (pain in the a)
[12:22:25] <furrywolf> what's the dir setup time on the drive you want to use?
[12:23:15] <furrywolf> if you have a drive with 0 dir setup time, it's trivial glue logic.
[12:24:10] <jdh> the drive I want to use does cw/ccw parker zeta
[12:24:42] <furrywolf> oh, then what's the problem?
[12:24:55] <archivist> an inversion?
[12:25:19] <jdh> right
[12:25:45] <furrywolf> that's not much of a problem. lol
[12:25:56] <furrywolf> I thought you were asking about converting cw/ccw to normal step/dir
[12:26:27] <archivist> getting levels/currents right confuses some
[12:26:36] <jdh> like me
[12:26:40] <archivist> 12v ?
[12:26:48] <jdh> 5v
[12:26:55] <archivist> bothe sides?
[12:27:00] <jdh> yep
[12:27:45] <archivist> just get the sense right with the correct inversion...or not
[12:28:55] <archivist> a scope is invaluable
[12:29:10] <jdh> I tried a 7404 wit an external 5v ps but only got noise out
[12:29:17] <jdh> with a scope
[12:29:45] <furrywolf> did the supply have a common ground?
[12:29:55] <jdh> I assume if I could get 5v/gnd from the source it would be better
[12:29:57] <furrywolf> also, you should run it off the same supply as the controller if you can.
[12:30:03] <archivist> make sure you have and needed puul up or down
[12:30:05] <jdh> supply haa commin 5
[12:30:13] <archivist> and/any
[12:30:27] <archivist> I bet it is an open collector drive
[12:30:39] <archivist> catches a few out
[12:30:55] <jdh> suggestions?
[12:31:03] <archivist> 1k ish to +5
[12:31:18] <furrywolf> make sure you have a common ground, use 5v from the controller if possible, add appropriate pullups or pulldowns.
[12:31:36] <archivist> down to as low as 330 ohms
[12:32:14] <jdh> I have all common ground
[12:32:20] <furrywolf> also, 74hc >> 74ls, if that's what you were using. (74ls has piss-poor sourcing ability)
[12:32:31] <jdh> but the 5v is not
[12:32:48] <archivist> see rl in the second diagram http://elearning.najah.edu/OldData/Courses/Course66321/Section0/DA_LOG/TTL/ttl_gate_circuits.htm
[12:32:54] <furrywolf> if you can grab the 5v from the controller, do so
[12:33:47] <furrywolf> even if it involves running a wire out a hole in it. :)
[12:33:55] <jdh> unvolves opening mostly running production equip and solderung
[12:34:38] <furrywolf> ah, I figured this was a nonfunctional project, if it needed new drives.
[12:35:22] <jdh> it drops a few steps every once in a while
[12:35:40] <archivist> production gear, usually has a boss shouting too
[12:35:52] <furrywolf> dropping steps could be anything
[12:36:18] <archivist> may be a stepper losing magnetism or machine seizing up
[12:36:28] <jdh> a boost xfrmr on the old drive fixed it for a few years
[12:36:35] <furrywolf> or noise
[12:36:56] <jdh> spins easy. 3 diff motors
[12:37:00] <archivist> helped remove what magnetism was left in the motor
[12:37:39] <archivist> but check everything
[12:38:01] <furrywolf> turn the acceleration and max feedrate down. :)
[12:38:50] <furrywolf> I need more voltage on mine... running at 54VDC, probably look for a new transformer and aim for 70VDC
[12:38:56] <furrywolf> get a few more in/min out of it.
[12:39:26] * archivist wanders off to adjust a door
[12:45:00] <just_pink> hi
[13:52:56] <HoppingMadMan> Hey guys, if anyone is about I have an quick question
[13:54:05] <_methods> shoot
[13:55:05] <HoppingMadMan> Does LinuxCNC support E-CUT controll board
[13:56:04] <JT-Shop> a link would be a help
[13:56:12] <JT-Shop> never hear of ecut
[13:56:12] <CaptHindsight> http://static.amazon.com/Mach3-Motion-Controller-Interface-Breakout/dp/B00KXRXAAW maybe dis?
[13:56:34] <CaptHindsight> looks like USB control card for Mach3
[13:56:40] <HoppingMadMan> http://www.ebay.com/itm/CNC-3-Axis-USB-Motion-Controller-Card-E-CUT-Mach3-Interface-Breakout-Board-1Mhz-/151339046589
[13:56:42] <JT-Shop> heh
[13:57:28] <CaptHindsight> HoppingMadMan: sorry, looks like NO
[13:58:04] <HoppingMadMan> Thanks
[13:58:24] <CaptHindsight> HoppingMadMan: would you care to try a parallel port + breakout board?
[13:58:50] <CaptHindsight> or possibly a very nice PCIe FPGA card?
[13:59:11] <HoppingMadMan> Yeah it is ok guys, I just wanted to make sure
[13:59:29] <CaptHindsight> no problem, it's why we are here!
[14:00:33] <HoppingMadMan> Yeah, I wanted to use CNC linux
[14:02:56] <CaptHindsight> HoppingMadMan: Mesa also has ethernet FPGA cards
[14:03:10] <JT-Shop> sell the ecut
[14:05:55] <CaptHindsight> the E-Cut board has an RJ-somethin jack, reckon its fer serial programming or??
[14:06:18] <skunkworks> the cheap ebay mpg's seem to work
[14:06:42] <skunkworks> dad ordered a couple. Differential output and everthing. count as fast as I can spin them.
[14:07:02] <skunkworks> (hooked to a 7i92->7i77)
[14:07:21] <skunkworks> 100ppr - 400 count per rev. pretty normal
[14:08:50] <skunkworks> HoppingMadMan, http://www.cnczone.com/forums/controller-cards/269642-cnc.html
[14:09:29] <CaptHindsight> http://www.cnczone.com/forums/attachments/4/7/1/5/0/6/426584.attach E-Cut manual in Engrish
[14:12:23] <JT-Shop> lol Engrish
[14:12:54] <CaptHindsight> in China they refer to it as Chinglish
[14:13:32] <HoppingMadMan> CaptHindsight You sir are awsome
[14:13:45] <HoppingMadMan> #awesome
[14:18:12] <skunkworks> need some i/o? http://pastebin.ca/3080919
[14:24:00] * JT-Shop thinks Sam broke pastebin with so much i/o
[14:26:43] <_methods> http://www.telegraph.co.uk/news/bbc/11772803/Jeremy-Clarkson-Richard-Hammond-and-James-May-sign-to-Amazon.html
[14:26:46] <_methods> heheh
[14:31:47] <skunkworks> http://3dprintingindustry.com/2015/07/30/texas-student-builds-backyard-concrete-3d-printer-everyone/
[14:35:52] <furrywolf> looks like they have some serious repeatability issues.
[14:37:17] <furrywolf> also, I have a hard time thinking they'll be able to make a large structure harden fast enough to not squish the bottom layer, without also hardening in the hopper, unless they're mixing some really hot cement as it's extruded...
[14:52:59] <CaptHindsight> I wonder if it could print cake and frosting?
[14:54:00] <spline> whoa that concrete 3d printer is cool
[14:54:05] <spline> CaptHindsight: yeah since that stays on
[14:54:36] <spline> but he's right on the mixture consistency (if you've ever mixed it) not that many do it anymore since its all premiXed with the right %
[14:55:11] <spline> furrywolf: yeah, that's what I was wondering
[14:55:25] <spline> always wondered if someone would develop a copolymer like it
[14:55:39] <CaptHindsight> it's been done, nothing new here
[14:56:03] <CaptHindsight> go back a few years for all the FDM concrete structures
[14:56:32] <CaptHindsight> ceramic and polymer as also common
[14:56:36] <CaptHindsight> as/is
[14:57:56] <FinboySlick> If done real slow, I imagine something like that would work with clay too. Then you'd have a house out of a single brick ;)
[14:59:34] <CaptHindsight> a large biosynthetic tube that you feed water and straw into at one end and clay bricks come out the other
[15:00:08] <FinboySlick> Then you'd also get steak when it's time to dismantle ;)
[15:01:46] <CaptHindsight> from 2010 https://www.youtube.com/watch?v=EfbhdZKPHro
[15:01:52] <FinboySlick> Lotsa bricks: https://en.wikipedia.org/wiki/Brick#/media/File:Panorama_of_Malbork_Castle,_part_4.jpg
[15:02:33] <CaptHindsight> http://3dprint.com/38144/3d-printed-apartment-building/
[15:03:19] <furrywolf> skip 3d printing concrete and just make a robotic mason... a big pick-n-place robot with a truckload of bricks and a mortar extruder, that then helps the aliens keep the jews in charge of the banks. oh, whoops, wrong masons.
[15:03:51] <CaptHindsight> genetically engineered hemp that weaves itself into the shape of a small home
[15:04:29] <furrywolf> that's the type of thing someone using hemp would think of.
[15:04:45] <XXCoder> CaptHindsight: I remember one of tech found in book (sci fi future one) theres houses grown from coral. in this book it has been hundred years
[15:05:04] <XXCoder> most is normally built but few remaining old coral home is very thick because it never stops growing lol
[15:06:19] <_methods> i didn't know there was a spongebob book
[15:06:29] <XXCoder> lol
[15:06:40] <CaptHindsight> from 08' http://gizmodo.com/5045863/concrete-jet-printer-gets-caterpillar-funding-print-out-houses-on-the-way
[15:06:41] <_methods> hehe
[15:10:28] <furrywolf> grrr. apparantly the used outback panel I bought for my outback inverters is not what the seller said it is. it was supposed to be for a 24v system, but after doing some research, it's only for 48v systems.
[15:12:29] <furrywolf> the difference being 175A breakers and 2/0 wire vs 250A breakers and 4/0 wire.
[15:14:15] <furrywolf> I'm willing to put 2/0 wire on a 250A breaker, but I need to buy two 250A breakers, and they're close to $100 each. :(
[16:22:55] <Deejay> gn8
[16:38:40] <kyle__> Possibly stupid question: do CNC lathes typically move just cut along the center, or do they move xy & z across the whole surface?
[16:39:15] <furrywolf> they move the same way as a normal length. tool height is fixed.
[16:39:18] <furrywolf> lathe
[16:40:20] <furrywolf> if it moved both ways, then it'd be something closer to a horizontal milling machine than a lathe. :)
[16:40:32] <kyle__> Hrumm.
[16:40:55] <kyle__> How do you cut flat spots on it then? I can do the math for that, but I woulnd' think it would come out very smooth?
[16:41:31] <JT-Shop> a lathe normally doesn't have a Y axis
[16:41:40] <furrywolf> you can do fancy flat spot making, or you can move it to a milling machine. you can also clamp the part to the lathe table and use a cutter in the spindle. or get a turn-mill.
[16:41:41] <archivist> there are a few ways, usually with live tooling
[16:42:06] <JT-Shop> having said that I've seen andypugh cut flats on his lathe but he is very clever
[16:42:09] <furrywolf> andy has demonstrated you can turn a hexagon with linuxcnc. :)
[16:42:30] <kyle__> live tooling == rotary tool in place of a normal cutting tool?
[16:42:30] <archivist> the clever one is a multi tooth cutter contra rotating
[16:43:01] <JT-Shop> it's so clever I don't even know what you said lol
[16:43:48] <archivist> trying to find a vid, its very fast
[16:43:59] <furrywolf> I'll definitely want to try cutting a hexagon once I add spindle encoders.
[16:44:00] <archivist> https://www.youtube.com/watch?v=Qk0RybGyxuc
[16:44:40] <archivist> the method andy was using is the hard way :)
[16:44:57] <kyle__> archivist: Wow.
[16:45:43] <archivist> that method just needs the right number of teeth on the cutter and the right gearing
[16:47:02] <archivist> look at your snapon extension note the straight cut marks on the square
[16:48:39] <archivist> another reason linuxcnc wins, gear the cutter spindle to main spindle, dive in
[16:52:47] <archivist> other method is a servo/indexable spindle and milling https://www.youtube.com/watch?v=YSR1UbqWgLg
[16:53:29] <CaptHindsight> https://youtu.be/IIQzEDqRYSI?t=3m42s
[16:55:47] <archivist> these days, shove any tooling you fancy on the machine
[16:56:39] <archivist> there is a vid somewhere that add hobbing to the mix
[16:57:04] <SpeedEvil> If only it was easier to move the tool on a lathe in and out at several thousand G
[16:57:07] <CaptHindsight> I need to add a live grinder
[16:57:51] <SpeedEvil> ^without explosives
[16:57:54] <kyle__> Thanks all. Gives me much to think about.
[16:58:35] <CaptHindsight> https://www.youtube.com/watch?v=xcEI31A0pUI live hobber
[16:59:49] <archivist> hob is a little eccentric :)
[17:02:41] <SpeedEvil> That tooling looks reassuringly expensive.
[17:02:53] <CaptHindsight> heh
[17:03:13] <CaptHindsight> have to wait for the right auction
[17:03:28] <malcom2073> Amen to that
[17:04:38] <SpeedEvil> I'm not quite understanding the geometry. Is that cutting a profile which while not straight - ends up straight once you go along the shaft?
[17:05:01] <SpeedEvil> conic sections or something
[17:05:22] <archivist> that is cutting an involute with a rack form hob
[17:05:46] <archivist> it is "generating" the curve
[17:06:27] <archivist> there is a helix/thread on the cutter
[17:06:56] <SpeedEvil> and it's tilted with respect to the spindle axis?
[17:07:20] <archivist> the helix angle
[17:07:50] <SpeedEvil> I mean the axis of rotation of the helix is not 90 degrees
[17:07:51] <archivist> a standard marking on a hob is that angle
[17:08:14] <SpeedEvil> ah
[17:08:50] <archivist> the head on my machine is rotated to that offset angle to cut a spur gear
[17:10:24] <archivist> a close up of a clock form cutter and blank http://gears.archivist.info/P9190303.JPG
[17:10:48] <archivist> cycloidal form
[17:14:23] <furrywolf> that's pretty slow for hobbing. the live tooling must not have much torque available.
[17:14:48] <SpeedEvil> Or the lathe can't properly sync at higher speed
[17:14:59] <furrywolf> hobbing on a real hobbing machine is impressively fast
[17:15:10] <archivist> similar speed to the machines I have used
[17:15:31] <SpeedEvil> I guess you probably don't usually want bright blue chips from those.
[17:15:48] <archivist> no the tools costalotto
[17:16:46] <archivist> no skimping on coolant
[17:16:59] <archivist> except for brass
[17:18:51] <furrywolf> hobbing is on my list of things to try once I get spindle encoders and a rotary table.
[17:20:42] <archivist> I did it first at the clockworks, then retrofitted the barber colman, nest on the list is to add it to the 5axis mill
[17:48:13] <euridium> hello everyone
[17:48:54] <euridium> i am using a linuxcnc on a milling machine, and i am hoping to setup some closed loop spindle speed feedback
[17:49:05] <euridium> is it possible to do this with just a spindle index
[17:49:12] <euridium> with out phaseA?
[17:59:46] <euridium> quiet in here...
[18:02:40] <jthornton> what is the spindle feedback going to be used for?
[18:04:18] <euridium> rpm, to set and maintain the spindle set speed
[18:04:48] <euridium> so, closed loop, rather than open.
[18:06:41] <jthornton> you might be able to do that with one pulse per rev
[18:08:15] <euridium> how many pulses would i need minimum do you think?
[18:08:56] <euridium> i don't want to use the milling spindle for anything complicated, so no point in cutting an encoding disc and using 2 inputs when i only need 1.
[18:09:09] <euridium> that was my thinking at any rate.
[18:09:41] <jthornton> is your spindle drive controlled by LinuxCNC?
[18:10:05] <euridium> yes
[18:10:34] <euridium> step pulse in velocity mode
[18:10:54] <jthornton> I'm guessing the drive is not linear as to why you want to close the loop?
[18:11:09] <euridium> yes,not quite linear
[18:13:07] <jthornton> I think I've seen someone doing that on the forum
[18:14:18] <jthornton> stepgen http://www.linuxcnc.org/docs/2.7/html/hal/rtcomps.html
[18:15:06] <jthornton> gotta run, good luck
[18:17:35] <euridium> thanks
[19:18:31] <furrywolf> grrrrr. I ordered a twistlock plug on ebay. I got a 50A circuit breaker.
[19:18:56] <zeeshan|2> i dont see the prob??
[19:19:00] <zeeshan|2> its not rated for 50A?
[19:19:36] <furrywolf> no. I mean, rather than a twistlock plug, there's a circuit breaker in the box.
[19:20:08] <zeeshan|2> wire up a receptacle :P
[19:20:10] <zeeshan|2> lazy
[19:21:26] <furrywolf> ... you're not getting what I said. I ordered a twistlock connector. You know, a plug. Instead of getting a plug, I got a circuit breaker, an item only related by the fact that it carries electricity.
[19:21:31] <furrywolf> I didn't get any kind of plug.
[19:21:50] <zeeshan|2> http://www.kijiji.ca/v-tool-other/hamilton/6x6-square-level/1091190048?enableSearchNavigationFlag=true
[19:21:52] <zeeshan|2> bahahahahah
[19:21:55] <zeeshan|2> this is apparently usa made
[19:21:58] <zeeshan|2> with a big ass SHARS on it
[19:22:12] <zeeshan|2> furrywolf: ohhhhhh!
[19:22:22] <zeeshan|2> i was thinking completely different
[19:22:55] <furrywolf> Someone obviously picked the wrong item off the shelf or something.
[19:23:00] <furrywolf> or stuck the wrong label on it.
[19:27:56] <furrywolf> time for a "where the hell is my plug?" email.
[19:37:04] <skunkworks> so why aren't you hooking up the breaker?
[19:40:53] <malcom2073> How can he hook up a breaker without his plug? :P
[20:06:06] <skunkworks> zeeshan|2: did you find your index?
[20:19:54] <just_pink> 4000 ffeet of wire!!
[20:20:41] <just_pink> someone here?
[20:21:50] <malcom2073> Mebbe
[20:22:50] <just_pink> I want to celebrate the 8 rools of wire..
[20:23:37] <just_pink> soo nice to see them on the floor.
[20:24:58] <just_pink> now I just neet to order the terminal blocks
[20:27:13] <malcom2073> That's a lotta wire
[20:27:29] <just_pink> 0.75 miles
[20:27:35] <just_pink> 1.2 Km
[20:27:51] <malcom2073> What's it all for?
[20:28:33] <just_pink> control panel
[20:38:26] <just_pink> someone know where I can find white acrylic sheet?
[20:40:32] <cpresser> just_pink: plexiglas-shop.com
[20:40:45] <cpresser> for small quantities
[20:42:39] <just_pink> cpresser: I'm look like a person that buy small quantities??
[20:45:26] <just_pink> cpresser: sheet is 48.000 by 96.000 inchs..
[20:45:35] <just_pink> how they ship it?
[20:46:49] <zeeshan|2> skunkworks: nope
[20:47:20] <zeeshan|2> index pulse doesnt seem to be there, will need to check with scope if i am even getting an analog signal at index area
[20:47:31] <just_pink> this is really stupid way to order. look.
[20:47:53] <just_pink> the sheet cost 65.28 USD
[20:48:39] <just_pink> just the shipping cost 135.00 USD
[20:49:15] <just_pink> total 200.28 USD
[20:49:39] <just_pink> I need a place that I can drive and buy.
[20:51:23] <malcom2073> just_pink: home depot and/or local hardware store
[20:51:32] <malcom2073> I know the TrueValue hardware here has 4x4 sheets, unsure about 4x8
[20:53:22] <just_pink> home depot / lowes.. stock just transparent, I need white (It's going to be a diffuser)
[20:54:16] <just_pink> the size not really matter, I'm going to machine it to very small pieces
[20:56:14] <malcom2073> Ah the ones around here have more selection, call around. Some other less local ones may
[20:56:28] <malcom2073> Also try actual hardware stores like true value/ace hardware
[21:00:02] <os1r1s> just_pink: Where are you located?
[21:02:20] <zeeshan|2> http://www.ebay.com/itm/-/261986624189?
[21:02:22] <zeeshan|2> buy my stuff!
[21:02:38] <malcom2073> zeeshan|2: buy my lathe and I'll buy your stuff :P
[21:03:53] <zeeshan|2> i will only buy a cnc lathe!
[21:03:57] <zeeshan|2> slant bed with live tooling
[21:04:04] <malcom2073> I can tilt this one
[21:04:12] <zeeshan|2> ive saved up 3k
[21:04:28] <zeeshan|2> i hope to find one for 3000~
[21:04:35] <zeeshan|2> slim chance, but will try
[21:04:40] <zeeshan|2> malcom2073: is it a wall mount lathe
[21:04:53] <malcom2073> zeeshan|2: it can be if your wall is strong enough :-P
[21:04:58] <zeeshan|2> :D
[21:05:07] <zeeshan|2> what kind of lathe?
[21:05:12] <malcom2073> southbend 9c
[21:05:24] <zeeshan|2> th at should be easy to sell
[21:05:28] <zeeshan|2> thats a desirable lathe
[21:05:37] <zeeshan|2> prolly get 1500-2000 for it?
[21:05:37] <malcom2073> Not in my area it seems
[21:05:39] <zeeshan|2> depending on the condition
[21:05:43] <malcom2073> Asking $1k
[21:05:45] <malcom2073> with tons of tooling
[21:05:46] <malcom2073> no bites
[21:05:49] <zeeshan|2> blah
[21:05:53] <zeeshan|2> where are you?
[21:05:55] <malcom2073> location location location! :P
[21:05:59] <malcom2073> South central PA
[21:06:04] <zeeshan|2> weird
[21:06:11] <zeeshan|2> east coast you'd think you could sell it easily
[21:06:13] <just_pink> os1r1s: I'm from NY
[21:06:24] <zeeshan|2> just_pink: what is wrong with your english then/
[21:06:31] <zeeshan|2> :-)
[21:06:41] <malcom2073> Ouch, harsh man lol
[21:06:59] <zeeshan|2> that came out wrong
[21:07:00] <malcom2073> Yeah I would've expected it to sell, but I keep knocking down the price on craigslist, nothin. Even posted it to a couple machine tool groups, they all gawked at the price
[21:07:05] <zeeshan|2> sometimes i need to think about what i type
[21:07:19] <os1r1s> just_pink: I usually get it from a local plastic supply company. If you search, I'm sure you will find one
[21:07:30] <zeeshan|2> malcom2073: really?
[21:07:33] <os1r1s> New York will almost certainly have one near
[21:07:36] <zeeshan|2> i saw one sell in toronto area
[21:07:39] <zeeshan|2> for $1500
[21:07:47] <malcom2073> Yeah, they regaled me with stories about how they got their southbends for $600-$800
[21:07:48] <malcom2073> heh
[21:07:54] <zeeshan|2> gimme a break
[21:07:54] <zeeshan|2> lol
[21:08:10] <os1r1s> zeeshan|2: On ebay the 9cs seem to go for around 500
[21:08:17] <zeeshan|2> that is ebay though
[21:08:20] <os1r1s> The 9a/b go for much more
[21:09:49] <malcom2073> I'm almost better parting it out
[21:11:24] <zeeshan|2> http://www.kijiji.ca/v-business-industrial/mississauga-peel-region/variant-10-diameter-cnc-lathe-fanuc-control/1091044581?enableSearchNavigationFlag=true
[21:11:25] <malcom2073> Hmm.... actually yeah. If I take it apart and clean up the parts, I can easily get $1k for the headstock, tailstock, saddle, bed, and gears independanly
[21:11:28] <zeeshan|2> that is perfect
[21:11:29] <zeeshan|2> no live tooling
[21:11:31] <zeeshan|2> but fak
[21:11:33] <zeeshan|2> so nice
[21:11:46] <malcom2073> 24" lol
[21:11:49] <malcom2073> could do brake rotors on that
[21:11:58] <malcom2073> Oh that's swing
[21:11:59] <malcom2073> nm
[21:12:49] <zeeshan|2> bigger spindle bore, horiziontal bed
[21:12:52] <zeeshan|2> full enclosure, servos
[21:12:58] <zeeshan|2> coolant, higher speed
[21:13:01] <zeeshan|2> it puts my lathe to shame
[21:13:17] <zeeshan|2> hyd chuck is really nice too
[21:13:25] <zeeshan|2> for repetitifve parts
[21:28:03] <os1r1s> Is there a reason in pncconf that additional parport cards can't be configured for in and out?
[21:36:32] <just_pink> where I can get really precise square?
[21:36:55] <zeeshan|2> do you mean "where can I get a really precise square"?
[21:37:50] <just_pink> zeeshan|2: yes :)
[21:38:21] <zeeshan|2> http://www.ebay.com/itm/Groz-4-Piece-Precision-S-S-Square-Tool-Set-Kit-2-3-4-and-6-R2-/121686259380?pt=LH_DefaultDomain_0&hash=item1c5510f6b4
[21:38:23] <zeeshan|2> i have these
[21:38:24] <zeeshan|2> i really like them
[21:38:36] <zeeshan|2> very precise
[21:38:55] <zeeshan|2> at least for most work
[21:39:24] <just_pink> I need just one
[21:39:41] <just_pink> and relatively small.
[21:40:26] <Valen> gauge block or something perhaps?
[21:41:08] <just_pink> 6"
[21:41:19] <just_pink> block is about 3
[21:47:08] <just_pink> this look nice
[21:47:10] <just_pink> http://www.ebay.com/itm/10-X-6-X-1-INCH-PRECISION-GRANITE-SQUARE-4901-2705/351429232474?_trksid=p2045573.c100034.m2102&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D32294%26meid%3Da30477dcaf4c478b908825dd5e154c7c%26pid%3D100034%26rk%3D1%26rkt%3D8%26sd%3D261636391284
[21:47:37] <zeeshan|2> that is nice!
[21:48:13] <spline> zeeshan|2: is that for refinishing a surface?
[21:48:24] <zeeshan|2> the square?
[21:48:34] <spline> yeah the groz ebay link
[21:48:39] <spline> (not sure what they're for)
[21:48:43] <zeeshan|2> for setup
[21:48:47] <zeeshan|2> if you wanna square something
[21:48:56] <spline> ah
[21:49:09] <zeeshan|2> like for example i was trying to line up the exhaust manifold flange square to the spindle
[21:49:10] <zeeshan|2> i used it
[21:51:56] <just_pink> http://i.imgur.com/xchxeNR.png
[21:52:27] <zeeshan|2> nice
[21:52:32] <zeeshan|2> which wire did you end up getting
[21:54:50] <just_pink> THHN, It is oil and gosalin resistant type 2 comper to the MTW and the other. very cheap and avilible.
[21:55:05] <zeeshan|2> nice
[21:55:05] <just_pink> lowes
[21:55:13] <zeeshan|2> tha ts what i used for my enclosure
[21:55:51] <just_pink> also 8 rolls?
[21:55:58] <zeeshan|2> nah
[21:56:05] <zeeshan|2> i just stuck with black, red, white, green
[21:56:10] <zeeshan|2> and some blue
[21:56:16] <zeeshan|2> the blue was mtw wire though
[21:56:23] <zeeshan|2> it was for 24vdc signals
[21:56:30] <zeeshan|2> thhn was for 240 and 110vac lines
[21:58:52] <just_pink> I don't want to make mix and match, I make standard for wiring, this way everything is uniform
[22:04:55] <spline> zeeshan|2: ahh ok so its almost like a carpenter's square?
[22:05:03] <just_pink> I had a 9V battery on my table, and some how I lost it. drive me nuts
[22:05:08] <zeeshan|2> spline: but more precise
[22:23:09] <zeeshan|2> can someone explain what machinekit does that linuxcnc doesnt?
[22:23:22] <zeeshan|2> can't you compile linuxcnc to run a rpi2 or bbb
[22:27:01] <HoppingMadMan> Hey guys, how everyone doing?
[22:27:41] <skunksleep> Wonderful
[22:28:48] <CaptHindsight> jumping4joy!
[22:30:12] <skunksleep> I didn't shoot a beloved lion... So pretty good.
[22:38:05] <skunksleep> Too soon?
[22:41:23] <HoppingMadMan> That is good, I was in the Kernel chat room, and they are quite the grumpy bunch
[22:42:43] <toastyde1th> hey, any of you doods ever use the inexpensive switches from mikrotik
[22:47:15] <just_pink> I'm going to rebuild the stack light. and convert it to 5V instead of 24V
[22:49:49] <just_pink> so.. I took it apart and I'm build it in solidworks.. hopefully soon I will finish PCB design for it.
[22:55:15] <os1r1s> Anyone know the difference between the primary and secondary function in the mesaflash pin file?
[22:57:00] <pcw_home> In standard HM2 firmware the primary function of every pin is GPIO
[22:57:01] <pcw_home> secondary functions are things like encoder inputs, step or pwm outputs etc
[23:02:55] <os1r1s> pcw_home: So even if its set to a quad encoder as the secondary function, I can still use it as an input for a normal min/max switch?
[23:03:13] <pcw_home> yes
[23:03:26] <os1r1s> Awesome. Thx
[23:04:03] <pcw_home> the limitation is that you cannot use it as an output if the encoder function is enabled
[23:04:48] <pcw_home> (and functions can only be enabled in a 0 to N fashion not pin by pin)
[23:05:12] <os1r1s> pcw_home: Not sure I'm following the last one
[23:05:40] <pcw_home> say the config has 4 encoders ( 0 through 3 )
[23:07:08] <pcw_home> you options are enable 0 ( no ) encoders,
[23:07:10] <pcw_home> encoder 0
[23:07:11] <pcw_home> encoders 0,1
[23:07:13] <pcw_home> encoders 0,1,2
[23:07:14] <pcw_home> encoders 0,1,2,3
[23:07:43] <os1r1s> Ahh, ok. I think I got it. I'll watch for that
[23:10:29] <pcw_home> so if you only wanted encoder 2 and 3 enabled, its not possible
[23:10:31] <pcw_home> (well its possible in the hardware but it was thought that
[23:10:33] <pcw_home> the driver config string would get to complex if pin by pin enables were implemented )
[23:11:54] <furrywolf> PCW: how's 7i76es coming?
[23:23:37] <trentster> Hi all - I think it would be a nice idea to have a "GRBL to LinuxCNC How-to" for folks making the move across. Since I am just starting out with LinuxCNC , Would anyone care to offer some pointers of converting settings from GRBL as shown when running $$ which returns the GRBL current config e.g. https://gist.github.com/trentster/ee1c5b3397c43fc5d4d5
[23:24:03] * furrywolf knows exactly zero about GRBL
[23:26:34] <furrywolf> ugh, arduino. My desire to help anyone who uses one is roughly nil.
[23:30:02] <trentster> furrywolf: thats the spirit
[23:30:15] <trentster> A great way to attract people to LinuxCNC
[23:30:44] <trentster> lets penalize them for getting interested in CNC and then expressing a desire to use something better
[23:32:49] <furrywolf> it's the kind of people it attracts.
[23:33:57] <furrywolf> some of the most utterly fucking stupid questions I've ever been asked have been from arduino users. sometimes it's a good thing to be unable to make something work without reading the fine manual thouroughly, as it makes sure anyone who uses it is capable of doing so.
[23:34:19] <os1r1s> trentster: I think any information to help new users is good info.
[23:34:44] <os1r1s> trentster: I've used GRBL before. Nothing wrong with it.
[23:35:34] <furrywolf> in another channel I used to hang out in, we got so sick of brain-damaged ardunio questions that channel policy was pretty much to pretend they didn't exist.
[23:46:26] <furrywolf> rather than questions like "I'm doing <something new> and I've read <google results> but can't figure out <whatever>", arduino questions always seem to be "I hooked these wires up randomly and then I stuck my finger in both the electrical outlet and my nose at the same time and then I connected the wires completely randomly because I found a howto that said to do that and how do I make it make pretty colors?"
[23:49:39] <furrywolf> except with a lot more typos and use of "u" and other non-words. and three words per line.