#linuxcnc | Logs for 2013-10-08

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[01:13:33] <MacGalempsy> life is tough!
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[01:21:35] <CaptHindsight> http://www.youtube.com/watch?v=qGyiXFGvkqE 6-axis 3D Printer
[01:22:43] <CaptHindsight> I wonder what the maximum number of axes is for a glue gun?
[01:25:59] <jp_mill> PCW: you around?
[01:26:17] <PCW> Yeah for a bit
[01:27:32] <jp_mill> Cant get a signal from the DB 25. I'm trying using the one stepgen i know is working. Used a DMM and an LED but nothing.
[01:27:50] <voxadam> That 6DOF additive printer
[01:28:07] <voxadam> That 6DOF additive printer is cool but od
[01:28:09] <voxadam> odd
[01:29:42] <PCW> do you have a linuxcnc config that enables the stepgens loaded?
[01:29:44] <PCW> you should at least see the dir change if you jog in either direction
[01:30:37] <jp_mill> yes. i can plug it back into the 7i76 to verify it works and it does
[01:31:59] <jp_mill> ok dir pin lights led
[01:32:11] <PCW> maybe not looking at the correct pins
[01:32:12] <PCW> note that the step pin (if you have not inverted it in HAL)
[01:32:14] <PCW> will be active high at the DB25, so will idle low
[01:33:00] <jp_mill> pin 6 should be stepgen #4 as per manual
[01:35:01] <jp_mill> OK All dir pins are OK at the DB25
[01:35:30] <PCW> you will not be able to see the short step pulses with a voltmeter
[01:35:58] <PCW> (or LED unless you check in the dark)
[01:36:26] <jp_mill> well it just happens i looked harder the LED is super dim when stepping
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[01:36:55] <PCW> you can change the stepgen to quadrature mode for testing
[01:37:12] <jp_mill> bright on the dir pins but very dim on the step pins
[01:37:24] <PCW> (and check the 7I76 outputs that way as well)
[01:37:46] <jp_mill> what does quad mode do?
[01:38:55] <PCW> generate quadrature instead of step/dir (so both pins will be 50% duty cycle square waves)
[01:39:48] <PCW> you can also set the step time way up to see it better
[01:39:52] <jp_mill> ah ok that makes sense
[01:40:13] <jp_mill> yeah give it longer durations
[01:40:46] <PCW> I thik max is about 1/2 ms on the 5I25
[01:40:55] <jp_mill> ok
[01:41:13] <PCW> (2^14-1 * 1/33MHz)
[01:41:38] <PCW> (14 bit step pulse width register)
[01:42:25] <PCW> so check the 7I76 outputs as well to see if they work, or are stuck or open
[01:42:42] <MacGalempsy> guys, i need a little infomration on breakout boards
[01:43:20] <jp_mill> PCW i feel so stupid. I think my problem has been step timing all along
[01:44:02] <PCW> Got pulses from the 7I76?
[01:44:18] <jp_mill> the drive i had before we nice drives that allowed for very low step timing. My 5th axis was set much larger X10
[01:44:21] <MacGalempsy> i pickedup a dc servo mill with vdf and atc. trying to determine which board will work best
[01:44:34] <MacGalempsy> *vfd
[01:44:37] <PCW> Well basically good news!
[01:46:42] <jp_mill> Yep all is good now. Turns out my wiring was probably ok
[01:46:59] <jp_mill> i had my step times at 100 & 100
[01:47:14] <jp_mill> 1000 on the 5th axis
[01:47:17] <PCW> 100 ns is a bit racy
[01:47:34] <jp_mill> worked well on the tolomatic drives
[01:47:57] <jp_mill> they were also diff input
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[01:50:33] <jp_mill> PCW: thanks for the help. That saved me a bit of aggravation.
[01:52:32] <PCW> Glad it wasn't broken1
[01:53:51] <jp_mill> me too i was not looking forward to using my older boards
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[02:11:19] <micges> MacGalempsy: what are these dc motors?
[02:11:32] <MacGalempsy> they are baldor
[02:11:42] <MacGalempsy> the machine will be here in a week
[02:12:44] <micges> you mean bldc servo?
[02:13:34] <MacGalempsy> I havent gotten inside the machine, so I dont know exactly what kind
[02:13:51] <MacGalempsy> but it was missing the controller, so that will be the task on hand
[02:15:04] <MacGalempsy> i guess once it gets here I can catalog the electronics and draw a wiring diagram
[02:15:27] <micges> yes and then you can look for boards
[02:15:27] <MacGalempsy> hoping light machines can hook me up with a wiring diagram and idea about the ballscrew pitch
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[02:20:29] <jp_mill> odds ar if they are baldor they are most likely to be brush DC
[02:21:01] <jp_mill> MacGalempsy: how old is the machine?
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[02:23:22] <MacGalempsy> 1999
[02:23:26] <MacGalempsy> benchman xt
[02:26:52] <jp_mill> Cool nice machine
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[02:47:07] <MacGalempsy> jp_mill: thanks. I hope it turns out as good as I imagine
[02:47:27] <MacGalempsy> its just going to take some time and effort to get it back and up 100%
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[03:02:21] <kwallace> Did someonr buy that Benchman XT on eBay?
[03:02:26] <kwallace> someone
[03:03:49] <uw> yup
[03:03:55] <uw> you want it, you gotta act
[03:13:02] <kwallace> I've got another machine on its way, and no space cleared for it yet -- something may got out into the rain. The Benchman should be fun.
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[06:48:25] <minibnz> hey does anyone know how to gcode an arc? i have tried to do this a few times now and everytime EMC spits the dummy and complains saying that my Radius to end points dont match up.. i have used gwizzard to view my backplot and it looks exactly like i want but EMC is just crapping out.. is this expected operation or am i doing something wrong?
[06:48:59] <minibnz> G1 X48.8356 Y24.953 F100
[06:48:59] <minibnz> G2 X43.7886 Y16.2114 I-1.9481 J-4.703
[06:48:59] <minibnz> G2 X35.047 Y11.1644 I-4.0386 J-3.0989
[06:48:59] <minibnz> G2 X24.953 Y11.1644 I-5.047 J-0.664400000000001
[06:48:59] <minibnz> G2 X16.2114 Y16.2114 I-4.703 J1.9481
[06:48:59] <minibnz> G2 X11.1644 Y24.953 I-3.0989 J4.0386
[06:49:01] <minibnz> G2 X11.1644 Y35.047 I-0.664400000000001 J5.047
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[06:49:34] <minibnz> its complaining about the 6th line which is the 5th arc in a series of connected arcs.
[06:50:04] <minibnz> is my problem that i am starting multiple arcs from other arcs as a start point?
[06:50:45] <minibnz> so the errors are compounding enough by the time it draws the 5th arc, to trip the tollerance settings in EMC?
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[07:01:59] <minibnz> ok does anyone know how or if its possible to define a part of a circle by using some other fields like R instead of IJK?
[07:03:31] <minibnz> or ami stuck
[07:03:51] <minibnz> and have to manually code the arcs into lots and lots of very small striaght lines..
[07:05:56] <minibnz> if i have to do that once i might as well write my own gcode generator.. i was thinking about paying for GwizardE but if its output doesnt match what EMC can do there is no point..
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[07:09:55] <DJ9DJ> moin
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[07:52:58] <archivist> minibnz, some generators can be told more decimal points(improve accuracy)
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[08:04:44] <MacGalempsy> so the spec sheet on my mill is that the dc servos are 30Ncm doesnt that seem a lot lighter than some of the nema23?
[08:07:27] <archivist> sellers vary the distance to make the numeric number seem larger
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[08:07:58] <archivist> some specify cm others inch others a meter
[08:08:01] <MacGalempsy> perhaps I should wait until the machine gets here next week before speculating
[08:08:26] <MacGalempsy> I wish I could find a wiring diagram or schematic for this thing
[08:09:05] <minibnz> archivist i will see what i can find in the prefs. thanks for the help..
[08:09:17] <MacGalempsy> anyone a light machine corp/ intelitek dealer?
[08:09:38] <archivist> minibnz, it gets mentioned on http://linuxcnc.org/docs/html/gcode/gcode.html#sec:G2-G3-Arc
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[08:09:46] <minibnz> EMC and Gwiz are both set to mm.. but i get what you are saying.. even thou they are both mm they may store the numbers with more points..
[08:11:49] <minibnz> ahhh i see.. i will follow this guide in future its based on EMC was following generic top of google results rather than the docs for the app i am using.. i hope i get there.. i have a mate checking my model to see if there is a problem with that... checking all my calcs right from the start is not a bad idea as well..
[08:12:01] <minibnz> cheers.. will let you know how i make out..
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[08:15:02] <MacGalempsy> im trying to figure out what kind of breakout board will run 4 axii, VFD, and an ATC
[08:21:52] <MacGalempsy> ah c10, and c6
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[16:08:40] <archivist> hmm just thought have I missed the exhibition... no http://www.meridienneexhibitions.co.uk/our-events-detail.php?id=0000000007
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[16:24:47] <Saethor10> Hi there linuxcnc community. I'm new to linuxcnc and just desided to try it out because I have a FANUC 5axis robotic arm up my sleeve ;).
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[16:25:49] <jdh> that sounds uncomfortable.
[16:25:55] <Saethor10> What is the best configuration for a 5 axis robotic arm like Fanuc LR MATE 100i.
[16:26:11] <Saethor10> Haha, true. It's hard to be a cyborg
[16:27:10] <archivist> see if someone has already written some kins near enough to adjust to fit your arm
[16:27:23] <Saethor10> And is there a good tutorial on how to implement some movement to start with.
[16:27:32] <Saethor10> ?
[16:29:05] <Saethor10> Would this be a good place to start?
[16:29:06] <Saethor10> http://linuxcnc.org/docs/html/man/man9/kins.9.html
[16:29:06] <archivist> I imagine you will need some form of interface to drive your servo amps and read position feedback, mesa cards probably
[16:29:34] <jdh> does it have a controller?
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[16:30:28] <Saethor10> The robot comes with a drivers and a controller. But I want to connect it via serial rs232-c
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[16:30:56] <archivist> cough...serial
[16:31:23] <Saethor10> Taking into account im new at this and probarly need as much help as i can get ;).
[16:31:25] <jdh> then you have no need for LinuxCNC
[16:31:41] <archivist> yet
[16:31:50] <archivist> till the controller dies
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[16:32:45] <jdh> what will you do with your arm?
[16:33:55] <Saethor10> The goal is to use a webcam to track moveing object via opencv which i have been using, and the use sucktion to picking them up. So I need to use linuxcnc, ros and opencv. Just for starters I want to move the robot with linux cnc.
[16:34:35] <jdh> pest control?
[16:35:52] <jdh> I don't think you will have much luck with serial control via linuxcnc.
[16:36:05] <archivist> linuxcnc is the controller, but you already have a controller, you need to decide retrofit or not
[16:36:16] <jdh> you would need to speak directly to the amps/encoders
[16:36:45] <Saethor10> Okey, taken into account I will then use linux cnc as the controller
[16:37:16] <Saethor10> not pest control just moveing small fish to individual cases.
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[16:39:06] <Saethor10> Where is the best place to start on using the linux cnc to control the robot.
[16:39:21] <jdh> decide how you want to interface
[16:39:49] <Saethor10> what do you recommend?
[16:40:11] <archivist> linuxcnc will expect to drive the servos, eg via mesa cards
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[16:41:08] <jdh> sounds good to me.
[16:41:34] <jdh> You need to check the servo amps and see what kind of inputs they want. And what kind of encoder/feedback is available.
[16:42:40] <Saethor10> I should find that in the datasheet of the robot?
[16:43:44] <archivist> I am wondering if you just want a script between your current controller and opencv
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[16:44:37] <jdh> to capture a moving fish with serial latency?
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[16:45:31] <pcw_home> Yeah If the current controller works and its just for pick/place you probably just need some glue, not a whole retrofit
[16:45:55] <Saethor10> The objective is to fill 96 small pods with fish from an aquarium. The aquarium has a mininimal depth and the fish would be taken up by suction
[16:47:37] <Saethor10> A script between the current controllen and opencv. Would that do the trick?
[16:48:50] <archivist> dunno without research...and that is above my pay grade
[16:50:51] <Saethor10> I
[16:51:51] <Saethor10> I
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[16:56:08] <t12> are you doing zebrafish work
[16:57:12] <Saethor10> Just a student project, and yeas they are zebrafish
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[16:58:00] <IchGuckLive> hi all B)
[17:00:14] <IchGuckLive> someone has heard about kthk Business has been effected by the powerfull typhoon
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[17:25:15] <jthornton> there must be something magical about the number 60
[17:25:31] <IchGuckLive> i guess its 69
[17:25:45] <IchGuckLive> as you can turn it and its the same :D
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[19:01:43] <mrsun_> the ISO taper is that also called BT taper or am i totaly off here? :)
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[19:29:58] <awallin> ISO and BT differ in the details (drawbar, drive-keys etc) but the tapers are same afaik
[19:30:50] <mrsun_> ahh .. hmm
[19:33:12] <JT_Shop> there is a web page that sells different holders and has drawings of them
[19:33:48] <mrsun_> http://www.tools-n-gizmos.com/specs/Tapers.html been looking there but do not find one called "ISO" =)
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[20:01:55] <joebog> morning all, anybody running Qcad/cam with linuxCNC ?
[20:07:23] <cradek> mrsun_: I believe ISO and NMTB are the same thing
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[20:07:53] <cradek> awallin is right that the taper on ISO, NMTB, CAT, BT are all the same but similarities end there
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[20:11:42] <tjtr33> joebog, i didnt know qcad was really open source, as in, some use librecad for that reason.
[20:11:43] <tjtr33> the webpage sez .org, but the page sez 'customer' :| dunno.
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[20:12:31] <joebog> yep we have Librecad as well
[20:13:02] <tjtr33> the ability to run the 2d thru a matix [ tilta, tiltb, tiltc ] temps me , esp if gcode output reflects the tilt of the plane.
[20:13:03] <joebog> BUT we did buy the latest version of Qcad and for the $100 it costs its excellent !!!!
[20:13:38] <tjtr33> so is it open or pay for? ( I _think_ those 2 are opposed )
[20:13:48] <joebog> the add on CAM bit is another $60 or so and it generates the G-code
[20:14:08] <joebog> its open in version 2.7 we bought ver 3.3.3
[20:14:24] <joebog> the open version DOESNT have the users manual !!!!!
[20:15:28] <tjtr33> have you written any ecmascript 'wizards' ?
[20:15:40] <joebog> its very similar to any other CAD though so guys that can already use a cad for mechanical ( I have used the free version for many years for electronic schematics)will have no problems
[20:16:08] <joebog> ecmascripts ???
[20:16:33] <tjtr33> they boast it is scripted and uses ecmascript ( ~= javascript )
[20:16:40] <joebog> remember im NOT a machinists bootlace :D
[20:17:16] <mrsun_> BT30 seems to have metric pullstud threads atleast
[20:17:17] <tjtr33> well it looks interesting, thanks for posting that info
[20:18:11] <joebog> I am ordering up another driver board for the 4th axis today and was wondering if anybody has any experience with these
[20:18:22] <joebog> http://www.ebay.com.au/itm/Promotion-Cheap-2-4-phase-Nema34-Stepper-motor-driver-256micsteps-7-8A-/271275429567?pt=LH_DefaultDomain_0&hash=item3f29468ebf
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[20:25:08] <joebog> Librecad is a spinoff from Qcad I beleive BUT I may be wrong.
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[20:48:56] <joebog> so has anybody any experience with these modules ?
[20:49:15] <joebog> http://www.ebay.com.au/itm/Promotion-Cheap-2-4-phase-Nema34-Stepper-motor-driver-256micsteps-7-8A-/271275429567?pt=LH_DefaultDomain_0&hash=item3f29468ebf
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[20:56:37] <mrsun_> http://www.sorotec.de/shop/product_info.php/language/en/info/p1544_werkzeugwechsler-fuer-kress-fme-1050---fme-800-v2.html/
[20:56:40] <mrsun_> cool!
[20:56:52] <mrsun_> only costs about 1/2 what my machine costs =)
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[20:58:16] <joebog> yah that can be a problem sometimes :)
[20:59:05] <MacGalempsy> greetings is it fair to say servos have finer step intervals than steppers?
[20:59:43] <mrsun_> but its not bad
[20:59:50] <joebog> what steps ?
[20:59:53] <mrsun_> realy, for having an ATC its not bad at all =)
[21:00:01] <joebog> servos are perfeclty linear I thought ?
[21:01:00] <joebog> I guess that depends on linear feedback or some form of interupter digital
[21:01:14] <joebog> the digital will be the worse
[21:01:22] <joebog> JUST like a camera or audio
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[21:01:27] <joebog> nothing beats linear
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[21:04:24] <mrsun_> ok so about 600 euro i need to raise with the machine and get one of those tool changers :P
[21:04:33] <mrsun_> would be neat to be able to have atc on the router =)
[21:04:44] <joebog> I still use two spanners Mr Sun :D
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[21:05:47] <joebog> Ill be adding a 4yth axix to the mill imconstructing
[21:05:59] <joebog> wow 4th axis
[21:06:17] <mrsun_> joebog, yeah but ive already found that i want to use like 3 tools on each thing i do =)
[21:06:39] <mrsun_> 1 90 degree V bit, one 60 degree and one straight for cutouts
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[21:06:43] <joebog> prbably more for what Im doing
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[21:07:00] <mrsun_> and thats just for some signs, and ive only done 3 signs so far since i built the machine :P
[21:07:00] <mrsun_> hehe
[21:07:10] <joebog> Im just converting a pantographic engraver into a mill for making small parts for guns
[21:08:02] <joebog> we are also gonna try to do graphics engravings on barrels and actions
[21:08:16] <joebog> like scrollwork and the oak leaves and acorns
[21:08:48] <joebog> plus do chequering on stocks etc
[21:08:54] <joebog> hence the 4th axis
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[21:10:59] <joebog> so far all I have made using the 3 axis that work so far is thge "LinixCNC" Logo :D
[21:11:08] <joebog> but it cut perfect first try
[21:11:26] <joebog> even using a 45 degree router bit in the engraver chuck :D
[21:11:57] <joebog> I didnt use enough revs however and the timber tore a little
[21:12:26] <mrsun_> https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-ash3/578515_10151869321123648_1310246937_n.jpg
[21:12:31] <mrsun_> https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-frc3/1376979_10151894105803648_1026019175_n.jpg
[21:12:32] <joebog> I only ran it at 12,000 RPM,s as the belts are very old and started to fly apart even at that speed
[21:12:36] <mrsun_> my first stuffs out of my router =)
[21:13:12] <joebog> I didnt know horses could read :D :D
[21:13:12] <joebog> sorry
[21:13:15] <joebog> its very nice
[21:13:29] <joebog> welcome anyway :)
[21:14:25] <joebog> we will be attempting to go a bit further than that if we can to try and engrave whole hunting scenes into the gun action
[21:14:38] <joebog> BUT we will start with acorns and oak leaves
[21:15:04] <mrsun_> =)
[21:15:09] <joebog> the yanks are crazy about engraved weapons
[21:15:16] <DJ9DJ> gn8
[21:15:36] <joebog> actually I should re phrase that !! the yanks are crazy about ANY weapons
[21:15:47] <joebog> gn8
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[21:17:08] <joebog> that small tablet you made is quite nice !!!!!
[21:17:55] <joebog> it has already tickled my interest in trying something like that and then to use different stains to "paint" more detail
[21:19:10] <joebog> I cannot read icelandic however :)
[21:19:27] <joebog> in fact I dont even know what you call your language
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[21:19:58] <gonzo_> evening peoples
[21:20:21] <gonzo_> anyone know anything about the mesa 7i90 boards?
[21:20:45] <gonzo_> seem to be new, but can't see anythuing about linuxcnc support yet
[21:21:04] <joebog> HEAPS of suport here
[21:21:19] <mrsun_> joebog, im from sweden, but the tablet is for my sister and her horse is icelandic =)
[21:22:01] <joebog> I used some generic ripoffs of mesa boards and they worked first time
[21:22:33] <joebog> took me a week to order them from the states, build the power supply and c\"controller"
[21:23:03] <joebog> hook it up and it works " outa the box "
[21:23:14] <joebog> all the support I obtained right here
[21:23:54] <joebog> http://www.ebay.com.au/itm/Promotion-Cheap-2-4-phase-Nema34-Stepper-motor-driver-256micsteps-7-8A-/271275429567?pt=LH_DefaultDomain_0&hash=item3f29468ebf
[21:24:18] <joebog> thats the board Ill be buying from China today to add the 4th axis
[21:25:00] <joebog> I still have a 5th channel which I might try and add full control of the main cutter motor
[21:25:18] <joebog> 3/4 horsepower variable speed drive system
[21:25:28] <joebog> sqirrel cage motor
[21:25:45] <joebog> squirrel cage
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[21:26:50] <gonzo_> joebog, I've hear that this is a good chan for help.
[21:27:30] <gonzo_> was wondering if there were any rumours of drivers for the 7190 cards, before I start ordering
[21:27:37] <joebog> its the best !!!
[21:27:48] <joebog> the guys here are just only too willing
[21:28:02] <joebog> its really the spirit of open source !!!!
[21:28:47] <joebog> hang on a sec
[21:28:51] <gonzo_> I'm pretty new to the subject. Been getting the mechanics of a mill conversion done. Now at the point of having to start putting some control on to it
[21:29:11] <gonzo_> so don't want to get an fpga card that has no drivers
[21:29:54] <joebog> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?LinuxCNC_Supported_Hardware
[21:30:00] <joebog> check that first
[21:30:12] <micges> gonzo_: 7i90 isn't supported atm
[21:30:41] <gonzo_> thanks, I was looking at that just a moment ago.
[21:30:44] <micges> but it will be for sure both in LPT and SPI mode
[21:30:59] <gonzo_> that was what I though
[21:31:20] <gonzo_> they are really cheap, so guess they will be popular
[21:31:36] <joebog> http://s80.photobucket.com/user/amp_mangler/library/linuxcnc_fitting
[21:31:40] <gonzo_> so support may not be liong in coming
[21:31:41] <micges> I agree
[21:31:45] <joebog> thats what Im working on
[21:31:56] <PCW> There is a branch with Sebastian patches that will work for EPP mode (really just bug fixes in the 7I43 driver)
[21:31:59] <joebog> I actually have another 30 or more photos to add
[21:32:36] <gonzo_> that's a retro fit for an existing cmc machine>
[21:32:40] <gonzo_> cnc
[21:33:10] <micges> PCW: maybe cradek will agree to add additional hm2_7i90 module for 2.5.x branch, and unified lpt driver will be on 2.6
[21:33:13] <joebog> yep
[21:33:48] <joebog> I ripped out the Moronsoft stuff and made up all new "controller" using Linux and it workrd first time
[21:34:05] <joebog> AFTER a few adjustments that the guys here helped me with
[21:34:52] <gonzo_> would be nice to see 7190 drivers, as that card seems ideal for what I need
[21:35:13] <gonzo_> I'm adding cnc to an old manual bridgeport
[21:35:14] <joebog> if ya wanna keep that photobucket addy, I will post up a heap more pics later today
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[21:37:50] <joebog> the machine is a pantocut and the moronsoft software is $7500 for 5 ONLY fonts !!!!!!
[21:38:18] <PCW> micges: better still would be hm2_epp since there should be _no_ difference between the 7I90 and the 7I43 drivers
[21:38:20] <joebog> with linuxCNC it will be a 4 axis CNC mill for making gun parts
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[21:38:52] <joebog> and the software is essentially free
[21:39:55] <jp_mill> joebog: I just built a stepper machine with those drivers. So far they are fine
[21:40:08] <micges> PCW: for 2.6 yes, for 2.5.x there can't be any required config changes (like hal driver rename)
[21:40:14] <joebog> and so far all the new breakout stuff and 5 channels of experimental drive boards has cost a grand total of $250 !!!!!!
[21:41:28] <joebog> yep jp-mill this setup works fine too
[21:41:50] <joebog> the pics acvtually show how the machine was butchered before it was purchased
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[21:42:18] <joebog> the pics are just my tests to confirm that all the motors and bearings were still working
[21:42:49] <joebog> I will completely rewire the machine so it doesnt have the eagles nest layout :D
[21:42:59] <gonzo_> my bridgeport was brought as a 'pig in a poke', and as I dug into it, it was a pig!
[21:43:14] <gonzo_> but lots of work and it's looking sweet now
[21:43:43] <joebog> all I had to do was identify alla the wiring that had been cut out
[21:43:52] <joebog> for what reason we never found out
[21:44:14] <gonzo_> PCW, so the 7i43 drivers (if I have the correct term) should work for the 7i90?
[21:44:24] <joebog> BUT we suspect it was distressed stock from somebodys bankruptcy and they made sure nobody was gonna use it
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[21:44:48] <gonzo_> shame when that happens
[21:44:55] <joebog> yup
[21:45:17] <joebog> beaifully made english machine weighs almost a ton of cast iron
[21:45:19] <gonzo_> what sort of gun parts are you making?
[21:45:39] <gonzo_> accessories or full frames/receivers
[21:46:05] <joebog> the guy who owns the machine is a gun maker so it will make all sorts of stuff, but mostly the small fidly bits like triggers and hammers
[21:46:27] <joebog> plus he wants to engrave the stocks , actions and barrels
[21:46:35] <joebog> do gold inlay and such
[21:46:36] <gonzo_> I'm in the UK, such things are really restricted
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[21:46:46] <joebog> yep here too
[21:46:57] <gonzo_> you in UK?
[21:47:16] <joebog> australia !!! no guns here without MAJOR headaches with authorities and all sorts of UBER stoopid laws
[21:48:02] <joebog> I am a semi retired hardware eng thats used unix for last 35 years or so
[21:48:28] <joebog> used to make mainframe SCADA systems
[21:48:30] <gonzo_> a friend was over there for a few years, a target shooter. He said it was similarly silly to UK laws
[21:48:43] <joebog> correct
[21:48:56] <joebog> cant have automatic or semiauto
[21:49:08] <joebog> but can have belt feed manual
[21:49:11] <gonzo_> ditto, apart from 22lr
[21:49:14] <joebog> how stupid is that ??????
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[21:50:37] <joebog> the last gun he made ( just finished it last week ) is 50 cal Jeffries Safari Magnum !!!!!!
[21:50:42] <joebog> go figure that one
[21:50:53] <joebog> 98 pounds recoil into your shoulder !!!!!!
[21:51:26] <joebog> whole cartridge is some 4 1/2 inches long !!!!
[21:51:48] <joebog> same shell as 50 cal auto from aircraft
[21:51:59] <uw> that would be bmg
[21:52:06] <gonzo_> have fired an 8bore paradox (part rifled) double elephant gun. That was.... interesting
[21:52:07] <joebog> nope
[21:52:10] <joebog> jeffries
[21:52:17] <joebog> only goes 150 yards
[21:52:28] <joebog> 35,000 lbs muzzle pressure !!!!
[21:52:42] <joebog> barrel is like 2 inches diamtere
[21:53:18] <gonzo_> I can feel the chan being taken over by exited gun talk!
[21:53:24] <joebog> Jeffries was origionally made for hunting elephants in India!!!!
[21:53:33] <joebog> sorry gonzo :)
[21:53:40] <gonzo_> why sorry?!
[21:53:42] <uw> hmm never heard of .500 jefferies
[21:53:51] <uw> meh, it's half power of the bmg 50 though....
[21:53:53] <joebog> actually Im out to fit 4th aix and order more parts
[21:54:02] <uw> energy, not power
[21:54:02] <joebog> I will post more pics later today
[21:54:03] <uw> sorry
[21:54:05] <joebog> bye all
[21:54:30] <joebog> cause your right gonzo
[21:54:38] <joebog> its cnc channel not gun channel :D
[21:54:42] <joebog> bye fer now
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[22:22:48] <MacGalempsy> hi andypugh
[22:22:56] <andypugh> Hi
[22:22:56] <MacGalempsy> hows it going today:?
[22:22:57] <ries> Hey Guys, I was writing a little program to make from a square stock of weed a round stock efficiently, starting at corners and making them round.. But one thing that leads to a other, so now I can manage 'projects' and seperate operations per project and I am starting to write a little tool to create your own operations. this is a screenshot:
[22:22:58] <ries> http://skitch.rvantwisk.nl/~rvt/bmk/tmp/java-20131008-172233.jpg
[22:23:13] <andypugh> Pretty well, I spent all evening milling a tool for a friend.
[22:23:34] <ries> the idea is that it's a little toolbox to create your own general operations, things you need to do often.
[22:23:45] <ries> COuld that be handy for others, does something already exists like this?
[22:24:10] <MacGalempsy> sounds exciting. what kind of tool?
[22:24:12] <andypugh> I think that ngcgui might be like that, but I have never used it, so I am not sure :-)
[22:24:24] <andypugh> I like that your tool runs on OSX :_)
[22:24:51] <ries> andypugh: it will run on Linux windows and OSX
[22:25:09] <andypugh> Yeah, but I spend most of my time sat at an OSX machine.
[22:25:24] <andypugh> (Or stood at a Linux machine) :-)
[22:25:35] <ries> MacGalempsy: The idea is that it's a toolbox, you can add your own operations and you can make it (fairly easy) programmable. so if you have something special in yoru own toolshop. Then you can create a quick wizard for yoruself
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[22:26:34] <ries> andypugh: I am currently developing it on OSX… so I will ensure it will work on that, OSX is also my workhorse
[22:27:00] <ries> But just like the python script that you can open, the idea is that you can also open this tool from LinuxCNC, select a project, change some parameters and mill away
[22:27:20] <andypugh> I finally now have my mill set up with coolant and all the tools measured (in the special tool-measuring / tightening station that I built into the table-end casting). It as all rather convenient now. Except I find myself wanting the machine to "just know" when I have changed the tool. I wonder how to do that?
[22:28:18] <ries> andypugh: WOuldn't even the manual toolchange not keep track of that?
[22:28:20] <andypugh> I think JT_Shop might be working on something slightly like that.
[22:28:23] <ries> I never used that myself
[22:28:57] <ries> manual tool change that is...
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[22:29:58] <andypugh> Well, I don't even have manual toolchange set up now. if I type M6 T4 G43 then it returns immediately. This will of course need to change when I put tool-changes in G-code. Hopefully I will remember.
[22:30:54] <ries> a couple of years ago; I tried this myself
[22:31:04] <MacGalempsy> that sounds pretty cool. how do you come up with this stuff?
[22:31:24] <andypugh> The next job, though, is likely to be a new bottom bearing housing with an oil seal. I don't like the way that the current setup (oil above grease) drools and flings.
[22:31:27] <ries> But the manual toolchange isn't 'that smart' because you also need to touchoff, at least for me that was a manual step, and till today I have no idea if that's possible
[22:31:39] <ries> MacGalempsy: that was for me?
[22:32:38] <andypugh> ries: I have all my tools numbered and measured. With T1 as the probe I just need to probe the workpiece and all the tool lenghts and siamters Just Work :-)
[22:32:55] <MacGalempsy> no 2 andy
[22:33:18] <ries> andypugh: I only have a simple collect, I don't think I can do this
[22:33:51] <andypugh> ries: No. But have you seen the tool-change-with-auto-measure thing that mah set up?
[22:34:31] <andypugh> If you install a tool-measuring station it can all be automagic.
[22:35:57] <kwallace2> Tool length offsets should work for manual tool change, if one has tool holders.
[22:36:07] <ries> andypugh: I should take a look at that then…. I simply gave up on it a couple of years ago, and it's something I only do in weekend
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[22:36:31] <andypugh> kwallace2: Yes, that is exactly what I have.
[22:37:08] <andypugh> But I would rather like to be able to press the tool-release, swap the tools, and have the system automatically know what I did and change the tool parameters.
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[22:37:36] <JT_Shop> what
[22:37:50] <kwallace2> Without waiting for a prompt?
[22:38:10] <andypugh> Yes.
[22:38:28] <andypugh> Some form of barcoding, maybe?
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[22:51:13] <Tom_itx> andypugh do you keep the length offsets in the tool table?
[22:51:18] <Tom_itx> or set them one at a time
[22:51:27] <andypugh> Tool table.
[22:51:32] <Tom_itx> i preset all mine and added them to the table
[22:51:44] <Tom_itx> did you get your PSU fixed?
[22:52:35] <andypugh> Oh, that reminds me. Interesting bug-let. You can only open tooledit from Axis if you do it quickly. After a while, nothing happens when you try.
[22:52:48] <andypugh> Yes, the servo PSU is now working fine.
[22:53:21] <andypugh> Something else is wrong, I am not sure what, but the system has a tendency to do a hard restart if I try to open a web browser...
[22:53:41] <Tom_itx> i try not to run anything else while milling
[22:53:47] <Tom_itx> maybe the IRC client
[22:56:02] <andypugh> Yeah, though there was an element of "I wonder if that happens every time" about it.
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[22:58:56] <Tom_itx> even though you rigorously test the latency with load doesn't mean you gotta mill wiht it :)
[23:02:52] -!- tmcw has quit [Ping timeout: 264 seconds]
[23:06:40] * JT_Shop takes the rest of the day off
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[23:08:53] <MacGalempsy> so the other night we were talking about the benchman xt. and the guy came back to me after the auction was over and asked if I was interested
[23:09:40] <MacGalempsy> it will be here early next week and so there is a lot of anticipation going on. and a few questions too
[23:10:45] <MacGalempsy> i have never used linux, and am curious to know more about the software package.
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[23:11:50] <PCW> Andy: on my ~12 uSec latency test machine I get <100 ns jitter on the DPLL
[23:13:53] <MacGalempsy> will linuxcnc handle thread milling?\
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[23:14:42] <Tom_itx> yes
[23:16:02] <andypugh> MacGalempsy: Is this the guy who laughed at a 5k offer? What offer ddn't he laugh at?
[23:16:20] <MacGalempsy> yeah, he didnt laugh when I reoffered the 5k
[23:16:30] <andypugh> Result!
[23:16:58] <MacGalempsy> yep. he tried to get more, but he didnt know what he had going on
[23:17:24] <MacGalempsy> he is also throwing in the rest of the tooling that came with the lot
[23:17:42] <andypugh> Tom_itx: How do you do thread-milling? Is it G3 PN or is there another way?
[23:19:03] <Tom_itx> andypugh, i've never done it yet but i presume G3 would do it
[23:19:33] <Tom_itx> program a helix
[23:20:06] <andypugh> Yes, multi-turn G3 ought to be OK, I was just wondering if there was a dedicated G-code. (where you give pitch and depth, rather than depth and turns)
[23:20:21] <Tom_itx> i checked into those thread mills but they're rather costly. until i need one i think i'll wait
[23:20:31] <Tom_itx> not that i know of
[23:20:36] <MacGalempsy> ive never used a linux system and have been wieghing the linux cnc and mach3 choice. since this is ground zero, can you guys give me unbiased insight?
[23:20:39] <andypugh> Actually, pitch and depth would be a really easy G-code remapping excercise.
[23:20:41] <Tom_itx> how do they do rigid tapping?
[23:21:02] <Tom_itx> i guess that wouldn't be quite the same
[23:21:28] <Tom_itx> you need to get the root diameter right
[23:21:28] <MacGalempsy> the video on thread milling showed the difference.
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[23:21:37] <MacGalempsy> http://www.youtube.com/watch?v=rDnavOlGcdc
[23:21:39] <andypugh> You can rigid tap to single-point a thread.
[23:22:09] <Tom_itx> with rigid tapping there's no circular movement though
[23:22:49] <Tom_itx> unless you used a boreing tool and offset it for the hole
[23:23:24] <andypugh> Like this you mean? http://youtu.be/i4fTythQj5s?t=1m5s
[23:24:08] <Tom_itx> yep
[23:24:44] <Tom_itx> you'd be better off moving it away from the work instead of retracting it though so it only cuts one way
[23:24:57] <andypugh> MacGalempsy: I suspect that we can't give unbiased advice about LinuxCNC and Mach3.
[23:25:24] <MacGalempsy> ha. ok.
[23:25:32] <Tom_itx> well i can say i like it better than my previous software package
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[23:25:34] <andypugh> Tom_itx: And how would I move it away from the work?
[23:26:05] <andypugh> That casting was the balls nut and motor mount for the X axis :-)
[23:26:09] <Tom_itx> i suppose you could stop the spindle at the index mark then move the x or y axis
[23:26:23] <Tom_itx> other than that you wouldn't know where the tool stopped
[23:27:11] <andypugh> MacGalempsy: If I recall correctly that machine you bought runs +/-10V servo drives + encoders?
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[23:28:25] <MacGalempsy> andypugh: I believe so dc servo drives
[23:28:43] <MacGalempsy> the torque seemed kind of weak,
[23:28:53] <MacGalempsy> 41oz/in
[23:29:50] <andypugh> To the best of my knowledge Mach3 can't drive anything other than stepper motors (or certain servo drives that take stepper-like inputs). So, unless you want to rip out all the motors and drives, I think LinuxCNC is the only game in town for you.
[23:31:17] <andypugh> 41oz.in is probably the continuous rating. Servos always look weak compared to steppers.
[23:31:54] <MacGalempsy> after looking at a lot of wiring diagrams I think I can handle rewireing everything to a new breakout board
[23:31:55] <andypugh> That is because people selling steppers quote the biggest number, and the number they quote doesn't tell you very much.
[23:32:28] <MacGalempsy> but if ther eis only one game in town, Im willing to playball
[23:32:53] <andypugh> MacGalempsy: I would say just get the Mesa 5i25 / 7i77 combination board and wire it up to the existing connector. It should be rather easy.
[23:34:01] <MacGalempsy> I hate to sound like such a noob
[23:34:12] <PCW> There are analog servo motion controllers that work with Mach (CSMIO etc)
[23:34:13] <MacGalempsy> computer recommendation?
[23:34:41] <MacGalempsy> gecko has servo drivers, I would think they would go for mach support
[23:35:10] <andypugh> PCW: Does that do the servo loop in the hardware?
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[23:37:03] <andypugh> MacGalempsy: The Gecko servo drives take step-direction input. But you already have servo drives matched to the motors and the power supply, so why would you change them?
[23:37:30] <andypugh> MacGalempsy: Do you have a PC available?
[23:37:34] <MacGalempsy> you are right, no need to change what already works.
[23:38:01] <MacGalempsy> I have a workstation that I do my stuff on, but I figured getting a new pc will be required
[23:38:04] <MacGalempsy> dedicated
[23:38:07] <PCW> andypugh yes in a dsp
[23:38:08] <andypugh> The Gecko servo drives take step-dir exactly because they are interested in the Mach3 market.
[23:38:23] <MacGalempsy> wanted to wait until I got a gameplan before starting to buy the electronics
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[23:39:59] <joebog> gday again, anybody here used lathes.co.uk recently ???
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[23:40:16] <joebog> wondreing as no answer to emails from a couple ofg weeks ago
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[23:40:26] <andypugh> I have put a bare motherboard in the machine case along with all the other electronics: https://picasaweb.google.com/lh/photo/AXPmMc9GjIwEuk-7UFsH6dMTjNZETYmyPJy0liipFm0?feat=directlink
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[23:40:56] <andypugh> joebog: I read part of it every day, but I have not tried to get any sort of reply.
[23:41:14] <joebog> I ordered new belts a couple of weeks ago
[23:41:21] <joebog> no answer at all ????
[23:41:28] <joebog> thanks andy
[23:41:44] <andypugh> That's a bit off. Especially as I think it was me who recommended them.
[23:41:54] <joebog> yes :D
[23:42:21] <joebog> it vwas hehe hehe but I wont hold it against you :D considering all the wonderful help youve supplied
[23:42:53] <andypugh> I am not sure what the preferred motherboard is at the moment. It used to be the D525MW but those are pretty hard to find now, long out of production.
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[23:43:31] <joebog> I think I explained that I engraved the LinuxCNC logo at 12,000 revs into timber and all the belts started toi schred so I need new ones
[23:43:54] <joebog> plus I need collet chucks for a manual Alexander engraviung machine as well as belts
[23:44:30] <andypugh> Some odd sort of chuck is it?
[23:45:30] <joebog> nope just a standard collet chuck with flats on two opposite sides
[23:45:47] <joebog> about half inch
[23:46:09] <andypugh> MacGalempsy: The Atom boards have tended to give good latency. You probably want something cheap and simple. Super-mega-gaming machines are generally not great.
[23:46:23] <andypugh> Picture?
[23:47:24] <joebog> .623 X .528 actually
[23:47:39] <joebog> havent got any old ones at all
[23:47:40] <andypugh> Not the style at the bottom of this page? https://www.cromwell.co.uk/publication_page_pdfs/1428/164.pdf
[23:47:47] <joebog> and havent found em on net yet
[23:49:24] <joebog> nope, different the actualo collets are tapered in the drive shaft
[23:49:41] <joebog> the book has them as C31M
[23:49:52] <MacGalempsy> Since the CAD and CAM will be done on the workstation, i am open to whatever it takes
[23:50:21] <joebog> then 3.2 then 3.3M then 3.5M etc
[23:50:24] <joebog> up to 10
[23:50:32] <MacGalempsy> the machine also has and atc, what kind of board do you think will take to run that?
[23:51:36] <joebog> I "think" the 3.1 is equivelent to 1/8"
[23:51:44] <andypugh> There should be plenty enough GPIO on the 7i77 for the ATC.
[23:52:07] <Tom_itx> andypugh, how did those threads turn out?
[23:52:32] <andypugh> It's holding up so far. My entire X axis hans on it :-)
[23:52:41] <Tom_itx> i'm not sure it would be necessary to back the tool off, it was just an idea
[23:53:31] <andypugh> I am half expecting to snap it off at some point and have to replace it with an inserted steel part.
[23:56:34] <joebog> andy, have you tried Qcad/cam with linuxcnc ?
[23:57:06] <joebog> I have purchased the latest Qcad for the CAD part of the system
[23:58:11] <joebog> and was looking at the CAM part to write the G-code
[23:59:14] <joebog> it handles photography well so the advertising says