#emc | Logs for 2008-07-29

[00:19:08] <robin_sz> right, mesa card ordered
[00:19:57] <robin_sz> i guess I need to think up how to make the chuck now ...
[00:20:25] <ds2> make and chuck
[00:20:26] <ds2> ?
[00:21:32] <robin_sz> imagine a big 4 jaw chuck
[00:22:08] <robin_sz> with at least 320mm clear through the spindle ...
[00:22:26] <robin_sz> I guess I need a REALLY BIG bearing or slewing ring
[00:22:45] <ds2> 12.75 inches through hole Mmmmmm
[00:23:04] <ds2> what about lots of small bearings like with a steady?
[00:23:13] <robin_sz> yeahm thinking ...
[00:23:36] <robin_sz> maybe I just laser a 500mm ring of 6mm steel
[00:23:55] <robin_sz> and grip the edge with bearings in about 12 places
[00:24:18] <ds2> how big are the bearings on a cement truck?
[00:24:28] <robin_sz> heh
[00:39:22] <ds2> * ds2 waits for the report of a cement truck flipping over due to "frozen" bearings to show up on BBC ;)
[01:03:21] <jmkasunich> robin_sz: how big of a lathe do you have?
[01:03:38] <robin_sz> mmm
[01:03:47] <robin_sz> not big enough :)
[01:03:56] <robin_sz> oh, hmm
[01:04:07] <robin_sz> maybe with the faceplate ,,,
[01:04:13] <robin_sz> hi John :)
[01:04:31] <jmkasunich> hi
[01:05:48] <robin_sz> going well?
[01:06:03] <jmkasunich> specifically, how big of a disk (cut from plate) can you swing, to machine the edges
[01:06:12] <robin_sz> hmmm
[01:06:27] <jmkasunich> look at www.mcmaster.com, part number 3672K23
[01:06:28] <robin_sz> id have to measure the faceplate
[01:06:43] <jmkasunich> if you can make the edge of a plate disk a V, run it in 3 (or more) of those rollers
[01:06:51] <robin_sz> ah hah
[01:07:03] <robin_sz> well, I can always get it machined out
[01:07:22] <robin_sz> its just for plasma, so sub-micron accuracy is not essential
[01:08:09] <robin_sz> then fabricate some sort of reinforment and adjustabe jaws on the front face
[01:08:12] <jmkasunich> right - but it needs to be round, so you can adjust the rollers snug
[01:08:38] <robin_sz> the laser will get it +- 0.2mm anyway
[01:08:42] <jmkasunich> don't forget driving the thing... timing belt? roller chain? worm gear would be first class, but a large one isn't cheap
[01:08:59] <robin_sz> got some 3m ballscrews
[01:09:07] <jmkasunich> that won't rotate the chuck ;-)
[01:09:11] <robin_sz> and the chuck is nto driven
[01:09:19] <robin_sz> well, this is the intermediate chuck
[01:09:28] <robin_sz> support just before the cuttign head
[01:09:36] <robin_sz> the end chuck is driven
[01:09:43] <robin_sz> and doest need to be through hole
[01:09:59] <robin_sz> can use one of my huge geared servos for that
[01:10:03] <jmkasunich> ah, so a moderate size shaft on the end
[01:10:08] <robin_sz> yeah
[01:10:13] <robin_sz> I have soem MASSIVE servos
[01:10:28] <jmkasunich> get a cheap rotary table (maybe 8 inch or so diameter) and put a plate on it
[01:10:38] <robin_sz> ahh, not a bad plan
[01:10:57] <robin_sz> i got soem big servos with 90 degree reduction boxes
[01:11:06] <robin_sz> thought about using a VFD as a drive
[01:11:09] <jmkasunich> http://www.hgrindustrialsurplus.com/search-products/product-detail.aspx?id=21-108-010&searchtable=2&sortExpression=&SortASC=&pageSize=50&currentPageIndex=0
[01:11:15] <jmkasunich> shipping would be a bear tho
[01:11:42] <robin_sz> yeah
[01:11:50] <robin_sz> theres plenty of that sort of stuff over here
[01:11:59] <robin_sz> industry is going titsup.com
[01:12:07] <jmkasunich> right, I wasn't suggestiong HGR as a source, just an example
[01:12:12] <robin_sz> yeppers
[01:12:13] <jmkasunich> here's an interesting one: http://www.hgrindustrialsurplus.com/search-products/product-detail.aspx?id=05-534-084&searchtable=2&sortExpression=wbprice&SortASC=Yes&pageSize=50&currentPageIndex=0
[01:13:44] <robin_sz> damn
[01:13:47] <robin_sz> 199 USD
[01:13:58] <ds2> dollar's are cheap
[01:14:02] <robin_sz> yeah
[01:14:08] <ds2> less then 100 sterlings
[01:14:08] <robin_sz> that works out at ...
[01:14:13] <robin_sz> £1.28
[01:14:19] <ds2> haha
[01:14:45] <robin_sz> anyway
[01:14:51] <robin_sz> mesa card ordered
[01:15:12] <jmkasunich> robin_sz: my latest project: http://jmkasunich.com/cgi-bin/blosxom/index.html
[01:15:43] <jmkasunich> I'm brutally assaulting it with an angle grinder this evening
[01:18:19] <robin_sz> nice
[01:18:24] <robin_sz> hand scraped huh?
[01:18:49] <jmkasunich> yeah
[01:19:00] <jmkasunich> and not so well, originally
[01:19:18] <jmkasunich> I've found that one side of the base casting ways is tilted with respect to the other side
[01:19:56] <jmkasunich> usually you expect the worn spots to be low, but in this case they are high - it wore there because it was high
[01:22:45] <robin_sz> ah ha
[01:22:53] <robin_sz> so, it will end up better than new :)
[01:24:58] <jmkasunich> yeah
[01:25:21] <jmkasunich> glad I don't have a specific grinding job that needs done tomorrow
[01:26:59] <robin_sz> heh
[01:27:01] <robin_sz> yeah
[01:27:06] <robin_sz> nice photos
[01:27:31] <robin_sz> we have those in our welding shop too
[01:27:34] <robin_sz> ...
[01:27:37] <robin_sz> pigeons
[01:27:39] <robin_sz> ;)
[01:27:52] <jmkasunich> ?
[01:28:09] <robin_sz> its the traditional welding insult ...
[01:28:15] <jmkasunich> oh
[01:28:26] <robin_sz> look at a weld, and make some comment relating to pigeon crap ;)
[01:28:32] <jmkasunich> gotcha
[01:28:36] <robin_sz> * robin_sz giggles
[01:28:48] <robin_sz> and on that cheery note ...
[01:28:52] <robin_sz> I should go to bed
[01:28:56] <robin_sz> 2:30am
[01:29:22] <robin_sz> and wait for the mesa cards to show up
[01:30:05] <robin_sz> talk again soon
[01:56:38] <kcorbitt> hey
[02:00:04] <skunkworks> stustev: Hey
[02:00:47] <stustev> good evening
[02:01:14] <stustev> seems a little quiet this evening
[02:01:28] <cradek> hi stuart
[02:01:38] <stustev> hi chris
[02:01:42] <cradek> sorry I have not looked at the files you sent yet.
[02:01:52] <stustev> do you have a lathe in your garage yet?
[02:02:20] <cradek> so far I have a large object that's good for holding stuff down - but yes it is shaped like a lathe
[02:02:21] <stustev> no problem
[02:02:33] <skunkworks> stustev: http://www.cnczone.com/forums/showthread.php?t=61946
[02:02:36] <stustev> good - have a easy trip?
[02:02:54] <cradek> it was a lot of work but we did it safely and successfully
[02:03:11] <stustev> safe is the best - successful is second
[02:03:34] <cradek> it was a huge relief to finally have the lathe at ground level on the driveway.
[02:03:58] <cradek> soon I will have a control I'd be willing to sell you - interested?
[02:04:00] <stustev> i'll bet - how did you get it off the trailer?
[02:04:07] <cradek> rented a forklift.
[02:04:18] <skunkworks> aww - thats cheating.. '_
[02:04:21] <skunkworks> ;_
[02:04:26] <cradek> we devised all sorts of schemes but the forklift seemed safer.
[02:04:28] <stustev> very good - and no I don't need a control to hold paper down
[02:04:40] <cradek> oh it could hold down a lot more than just paper!
[02:04:59] <jmkasunich> tornado anchor!
[02:05:38] <cradek> I think I will be able to reuse the tape reader, thumbwheels, and numitron displays
[02:06:09] <cradek> but all those heavy transformers will have to go.
[02:06:19] <jmkasunich> lol
[02:06:20] <stustev> I have a non-working tape punch to go along with the tape reader
[02:06:23] <cradek> or maybe I have it turned around.
[02:06:34] <jmkasunich> make a clock out of the numitrons
[02:06:37] <cradek> I actually have a working punch
[02:06:50] <cradek> jmkasunich: they're no good for the long-term - they are incandescent
[02:06:52] <stustev> you can have two if you want this one
[02:06:56] <cradek> nixies are much better
[02:07:10] <stustev> did you get your scale readout working?
[02:07:16] <rayh> I've got several of em.
[02:07:23] <stustev> hi ray
[02:07:26] <cradek> stustev: it works, but the displays (also numitrons) are mostly shot
[02:07:35] <cradek> I have not found a way to mount it yet
[02:07:44] <stustev> I thought the displays are nixies
[02:07:50] <cradek> the mill is on hold (since it is working!)
[02:08:01] <cradek> nope, not this one
[02:08:16] <stustev> rats
[02:09:02] <rayh> Hi Stu
[02:09:06] <stustev> skunkworks: that forum looks interesting
[02:09:24] <cradek> if I wanted to keep the vintage theme I would replace them with 74141s and nixies. they are 7446 so the bcd is already there.
[02:10:06] <cradek> but right now I think I will not waste the time to fix the box, since I want the data in emc eventually.
[02:10:55] <rayh> The Ustore really provided a drip feed for the 550.
[02:11:56] <rayh> But if it were mine, I'd switch it over to EMC2 in a hot minute.
[02:12:25] <cradek> rayh: the ustore seems to be busted...
[02:12:48] <cradek> it shows a red square, and the knobs don't do anything
[02:12:48] <rayh> We can always hope.
[02:12:52] <cradek> haha
[02:13:05] <skunkworks> ebay: 'working when removed'
[02:13:31] <cradek> 'cannot test it because I don't have a power cord'
[02:14:05] <cradek> in this case, "I was making parts on it just 3 months ago"
[02:14:16] <cradek> I suppose it's possible, but very hard to believe.
[02:14:19] <rayh> I didn't keep my ustore manual. MattS might have one still.
[02:14:49] <cradek> thanks but it's ok. too many things are wrong to use it like this.
[02:14:54] <rayh> I did sell a few boards from his control.
[02:15:03] <cradek> thanks for sending the amp docs though. that will be great.
[02:15:30] <rayh> I agree. And when we have what we have why retreat 35 years.
[02:15:39] <rayh> You bet.
[02:16:19] <cradek> yes the first G76 will be a very sweet victory.
[02:17:16] <cradek> huh it also has a BTR. I wonder if someone could use it.
[02:18:46] <jmkasunich> BTR?
[02:19:04] <jmkasunich> something Tape Reader?
[02:19:22] <cradek> "behind the reader" - a thing that lets you pretend your PC is the tape reader
[02:19:40] <cradek> maybe he added that when the uStore croaked
[02:26:16] <rayh> I'll bet that's what happened.
[02:28:11] <cradek> he just forgot to tell me :-)
[02:35:41] <dmess> hi rayh...
[02:38:18] <cradek> stustev: how is the cinci coming? is the spindle back together yet?
[02:39:15] <rayh> hi dmess
[02:40:54] <jmkasunich> the cinci? I thought it was running? (the one in the video)
[02:42:11] <dmess> i have My nena 24's for my 'lil Hardinge HLS-59 1-1/16 max collet but has a taperered spindle to take a 6" chuck and near 8 inch dia. capacitiy
[02:43:32] <dmess> i wanna make heat treat tensile specimens... what do you think??
[02:44:05] <jmkasunich> think? I can't do that
[02:45:09] <dmess> but maybe i COULD i have a supe pricicion spindle... just waiting
[02:45:37] <jmkasunich> heh
[02:45:42] <jmkasunich> I meant "I can't think"
[02:46:33] <dmess> you know what a tensile piece looks like>>
[02:47:38] <jmkasunich> vaguely hour-glass-ish, with threads on the ends
[02:48:11] <dmess> yup
[02:48:14] <jmkasunich> is turned finish good enough, or are they ground?
[02:48:56] <dmess> you should be able to turn em'... but we cant inhouse
[02:50:03] <dmess> 80 bucks of external polishing.. due to corporate rules
[02:56:17] <jmkasunich> pretty: http://cgi.ebay.com/RARE-Machinists-Scraping-Master-48-Straight-Edge_W0QQitemZ160265806210QQihZ006QQcategoryZ12581QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
[02:58:34] <jmkasunich> anybody interested in scraping - this book is the bible, and sells new for $90: http://cgi.ebay.com/Machine-Tool-Reconditioning-by-edward-Connelly-lathe_W0QQitemZ120287884882QQihZ002QQcategoryZ378QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
[03:02:22] <cradek> jmkasunich: that scraping seems a little bogus. I don't see why there would be a regular pattern, like you'd have to hold oil. I wonder if it's been "touched up" for ebay.
[03:02:48] <jmkasunich> it doesn't seem that regular to me
[03:03:01] <cradek> look at the lower left pic
[03:03:23] <jmkasunich> that end does seem a little more regular
[03:04:01] <jmkasunich> in any case, when you buy something like that, you need to verify that it is accurate, and if not, finish scraping it
[03:04:23] <jmkasunich> you are really buying the casting, aging, and grunt work that got it 99% of the way there
[03:04:24] <cradek> http://upload.wikimedia.org/wikipedia/en/b/b8/Scrapestandard.jpg
[03:05:41] <jmkasunich> the 2nd from the top pic on the left looks more random, but as you say, can't be sure
[03:05:49] <toastydeath> not all scraping looks the same
[03:05:53] <jmkasunich> that is too big for my purposes anyway
[03:05:54] <cradek> yeah, buyer beware
[03:06:06] <toastydeath> everyone does it different and it leaves a different pattern, we have a bunch of straightedges and no two have the same pattern
[03:06:34] <dmess> its all about 50/50 bearing surface
[03:06:41] <jmkasunich> I'm watching this one: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=140252892693&ssPageName=STRK:MEWA:IT&ih=004
[03:07:18] <dmess> i use my STEEL surface ples..
[03:07:24] <dmess> plate
[03:07:25] <stustev> The cinci has had a problem. The spindle now has all the parts found or built. jmkasunich: I broke it bad. I had the code commented out that kept the spindle from starting when I had the tool changer cylinder compressing the belleville washers. I started the spindle. No problem for a little while. Big problem later. Parts welded together. Parts twisted off. No parts available at any price. We had to build the whole retention system. Finished
[03:07:43] <jmkasunich> ouch
[03:08:04] <stustev> education is expensive
[03:08:10] <jmkasunich> sure is
[03:08:23] <stustev> I need to build a checklist for myself
[03:08:30] <dmess> DOH... i hate when that happens
[03:08:42] <jmkasunich> there is a saying something like "education is learning from your mistakes - higher education is learning from someone elses's mistakes"
[03:09:45] <stustev> I have heard it this way - A smart man learns from his mistakes - A genius learns from someone elses' mistakes
[03:09:52] <jmkasunich> yeah
[03:10:03] <jmkasunich> and some people never learn
[03:10:05] <dmess> yup
[03:10:25] <stustev> I hope I can avoid the 'never learn' catagory
[03:10:46] <jmkasunich> I think you've managed that - I've seen your shop and how you work
[03:11:03] <fenn> why are surface plates steel and not white iron?
[03:11:23] <jmkasunich> fenn: actually, I think they are often cast iron, not steel
[03:11:30] <jmkasunich> steel is used for lapping plates
[03:11:40] <jmkasunich> but scraped plates are usually cast iron
[03:11:40] <dmess> 3 kind of ppl in the world... those that make it happen.. them that watch it happen and those that stand aroung wondering what just happened
[03:12:42] <dmess> yes mine is grey cast iron to be precice
[03:12:43] <toastydeath> gray iron.
[03:12:47] <toastydeath> indeed.
[03:12:52] <stustev> I made - I watched - I wondered
[03:13:04] <stustev> I cried
[03:13:06] <fenn> i was thinking white iron would be more wear resistant, but maybe you can't anneal it properly
[03:13:07] <toastydeath> steel isn't very stable, is a poor bearing surface, and blues badly.
[03:13:39] <fenn> so, do you normally put the blue on the plate or the part?
[03:13:49] <toastydeath> ideally you don't want to anneal a casting at all, it should be cooled slowly enough to not have stress in it to begin with
[03:13:57] <dmess> part... for me
[03:13:58] <jmkasunich> most often the plate, but it depends on what you are doing
[03:13:59] <toastydeath> because you can never get all the stress out of cast iron
[03:14:12] <toastydeath> fenn, usually the master, sometimes both
[03:14:18] <fenn> both?
[03:14:26] <toastydeath> red lead and prussian blue.
[03:14:31] <fenn> oh, interesting
[03:14:40] <toastydeath> very high contrast for when you're mating two non-master surfaces.
[03:15:01] <jmkasunich> connelly goes into great detail on that (and a billion other things)
[03:15:27] <jmkasunich> the book is both incredibly informative and incredibly sleep-inducing
[03:15:45] <dmess> stresses can be handled but take TIME... my s/plate and angle plate spent MONTHS in the oven... up and down with whatever cooked inn it
[03:16:45] <dmess> red lead is banned in many places.... LIKE HERE so its prussian blue for us
[03:17:07] <fenn> seems like any pigment would work
[03:17:29] <dmess> has to stick
[03:17:43] <fenn> its not the pigment that sticks though, it's the binder it's in (linseed oil i think)
[03:17:48] <toastydeath> fenn: indeed, but they use prussian blue and red lead because they're very very high contrast
[03:18:01] <toastydeath> and yes, linseed or whatever else someone feels like using
[03:18:01] <jmkasunich> fenn: has to stick, has to be able to spread into a very thin an uniform layer, has to not dry out, etc
[03:18:11] <dmess> you can only read and work 1 side.... otherwise you fight yourself
[03:18:37] <jmkasunich> in fact, "prussian blue" as used by artists isn't that good, because it does dry out - Dykem HiSpot Blue has non-drying oil in it, much better
[03:18:49] <toastydeath> that's what i've got, a little tube of it.
[03:18:54] <jmkasunich> ditto
[03:19:06] <jmkasunich> $4 or so, lasts about forever
[03:19:16] <fenn> i've only used prussian blue artist's oil paint
[03:20:10] <dmess> it will also WRITe off the paint in a house if the 3 yr old get his hands on it....IT was EVERYWHERE
[03:22:10] <dmess> my tool box was in the livingroom for a weekend in-between jobs....the boy wrote the place OFF in "BLUE stuff daddy"
[03:23:34] <toastydeath> jm how is your scraping going
[03:23:38] <toastydeath> do you have like a project
[03:23:45] <jmkasunich> yeah, its a project
[03:23:52] <jmkasunich> the grinder
[03:23:59] <toastydeath> oh awesome
[03:24:04] <jmkasunich> I'm waiting for the 9x12 surface plate to arrive
[03:24:25] <dmess> that'll help
[03:36:50] <jmkasunich> goodnight
[03:36:59] <toastydeath> bai
[04:20:11] <RonB> setting up the IRC list - will have questions soon - thanks
[04:22:50] <toastydeath> ....
[04:22:55] <toastydeath> he made a difference.
[04:32:29] <toastydeath> for those of you who document stuff as you do it, how do you decide what to take pictures of?
[04:33:00] <toastydeath> the proper go-ahead has been given for me to take pictures of my work stuff so i can start a webpage
[05:01:47] <fenn> the rule of thumb is that 1 out of 10 pics will be good, so take 10 times as much as you think is right, then pick the good ones
[05:03:20] <toastydeath> k
[05:03:40] <toastydeath> well i kind of meant stuff like, my boss will probably not be so okay if i stand there taking 10 pictures every two seconds
[05:03:50] <toastydeath> i dunno what "key points" make good images
[08:57:07] <micges> hi all
[19:02:10] <owad> I'm setting up EMC and homing my axes for the first time. With the first axis, Z, it moves to the switch, backs off a little, and then gives me the error "home switch active before start of latch move". What does that error mean?
[19:12:15] <cradek> it means just what it says. it is about to move back onto the switch to find the final position, but the switch is already triggered
[19:12:42] <cradek> maybe you have a noisy switch, or you are sharing a switch between more than one axis? tell us about your setup.
[19:12:58] <skunkworks_> you're maybe not backing off enough?
[19:13:22] <cradek> the backoff just stops when the switch clears I think
[19:13:26] <skunkworks_> oh
[19:13:32] <skunkworks_> then never mind. ;)
[19:13:41] <owad> I have both the home and limit switches wired together, but def only one is triggered
[19:13:55] <owad> I don't think it backs off far enough to untrigger the switch -- let me check again
[19:14:59] <cradek> maybe it gets noise when backing off, so it thinks it's off when it really isn't
[19:15:08] <cradek> you can use halscope to figure out what is going on.
[19:16:56] <jepler> do you want/need step by step instructions to use halscope to look at the input from the switch?
[19:19:39] <skunkworks_> jepler: made any new circuit boards?
[19:19:46] <skunkworks_> *milled
[19:21:01] <jepler> skunkworks_: I've made two. the second one is bigger (2.5x4 inches) but very simple -- just some connectors and some resistors. the depth was very consistent (which was the problem before), but I cut deeper than I intended -- the traces are quite narrow. I haven't quite perfected my touch-off procedure
[19:21:46] <jepler> skunkworks_: that's the board on the right in this photo: http://emergent.unpy.net/files/sandbox/img_7489-medium.jpg
[19:22:04] <skunkworks_> heh - mine was the other way - It took a few adjustments before it cut.
[19:22:58] <skunkworks_> Neat - that is for your logic analizer?
[19:23:34] <skunkworks_> analyzer
[19:23:36] <jepler> yep. the FPGA runs with 3.3V I/O, and one way to make it safe for 5V inputs is to have a series resistor, which is what that board has
[19:25:09] <jepler> instead of the female sockets I'm going to put male headers on the board (actually, I originally planned to have both -- you can see a row of thru-holes for the male header on that board) and then use these home-made cables as probes: http://emergent.unpy.net/files/sandbox/probes-medium.jpg
[19:25:50] <skunkworks_> did you end up buying a crimper?
[19:26:31] <jepler> yeah, steves_logging gave me a suggestion for a $20 crimper that will kinda-sorta crimp these connectors
[19:26:46] <owad> Hmm... just tried the Y axis, and a bit before reaching the limit switch, I get the error "end of move in homes state 5". Guess its time for halscope, like you mentioned, cradek
[19:29:00] <jepler> skunkworks_: hopefully my simple board and cables will work for microcontroller-speed (<20MHz) stuff .. jmkasunich has made me pessimistic that stuff will work at FPGA speeds (50MHz+) without stuff like grounds on every other pin, short cabling, and so on..
[19:29:49] <billy_kid2> hi all
[19:29:54] <jepler> billy_kid2: welcome
[19:30:11] <cradek> owad: that one probably means your soft limits are shorter than your travel.
[19:32:44] <gefink> owad: what happens if you start homing again from this location?
[19:33:06] <skunkworks_> jepler: That sounds like a challenge ;)
[19:34:36] <owad> gefink: just tried that. It goes the rest of the way. Hits the switch. Backs off until the switch is released. Hits the switch again, and stops. But emcs gives the error "joint 1 on limit switch error"
[19:36:01] <gefink> owad: if you use a combinated home/limitswitch you must use an homeoffset to release the switch after homing
[19:36:02] <owad> matter of fact, if i steop and relaunch emc, I get the joint error when I hit the 'power' button
[19:36:27] <anonimasu> hm, that makes sense
[19:36:52] <gefink> owad: you can drive the wiitch free if you tag "override limits"
[19:37:02] <gefink> wii=swi
[19:38:07] <gefink> tag "override limit", press "on button" and use the cursorkeys...
[19:38:25] <owad> gefink, I do have them combined. Thank you. I don't see a homeoffset value in the StepConf Wizard. Is that sometthing I'd add by editing the stepconf file manually?
[19:38:52] <gefink> i think its named homelocaten or home offset
[19:41:42] <billy_kid2> somebody can help me for mpg pendant?
[19:42:06] <gefink> Its possible to send 200 UDP-packages per second with a modified halsampler safe, 400 at (over) limit
[19:47:50] <gefink> billy_kid2: mpg=encoder+switches???
[19:47:59] <billy_kid2> yes
[19:48:11] <billy_kid2> only a little question
[19:48:30] <gefink> what?
[19:48:36] <billy_kid2> it work fine at parallel port
[19:48:58] <billy_kid2> during program execution
[19:49:18] <billy_kid2> i can use wheel for adjust feedrate?
[19:51:38] <gefink> i think its possible. moment some time ago i read ablout..
[19:53:25] <billy_kid2> i read hal documentation first :)
[19:54:09] <billy_kid2> thanks
[19:55:04] <gefink> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Halui
[19:56:34] <gefink> halui.feed-override.increase, halui.program.run should help
[19:56:57] <billy_kid2> i see!!
[19:57:04] <billy_kid2> great
[19:57:34] <gefink> billy_kid2: use custom_postgui.hal to do this.
[19:57:52] <billy_kid2> ok
[19:58:24] <gefink> i had problems loading halui in custom.hal
[19:59:24] <billy_kid2> i never used halui
[20:01:27] <gefink> i used it for additional buttons
[20:04:26] <billy_kid2> the speed is ok?
[20:04:45] <gefink> speed???
[20:05:47] <billy_kid2> system work well?
[20:06:12] <gefink> yes. no problem
[20:06:13] <billy_kid2> or halui make slowly
[20:06:16] <billy_kid2> ok
[20:06:31] <gefink> latency is the biggest problem
[20:06:39] <billy_kid2> i have 4 axes
[20:06:54] <billy_kid2> + pwm spindle
[20:07:15] <gefink> halui.feed-override.counts s43 //counts from an encoder for example to change FO
[20:07:19] <billy_kid2> 2 parallel port
[20:07:59] <gefink> i have 3 axis +spindle
[20:09:12] <gefink> but no mpg
[20:09:44] <billy_kid2> mpg mounted today :)
[20:09:56] <billy_kid2> is very good
[20:20:10] <owad_> gefink: I set my home location to 0.25, which seems to work, except it goes 0.25" in the wrong direction, and slams into my switch. The figure should be positive, right? I think I have my axes directions all confused.
[20:22:03] <gefink> owad_: this is the first thing. whee is your Zero-point?
[20:22:48] <gefink> if it is left down, most time the referencespeed is negative
[20:23:10] <gefink> if the switches are there
[20:23:32] <owad_> judging by the directions the axes move when I tell them to find home? Z is up (close to the motor) and X & Y are away from the motor
[20:24:07] <owad_> I'm not sure which direction I should be looking at everything from…?
[20:24:17] <gefink> owad_: the sign of referenzingspped says the direction
[20:24:35] <gefink> spped=speed
[20:26:49] <SWPadnos> directions should be chosen so that the tooltip motion (with respect to the workpiece) is in a "right hand" coordinate system
[20:26:59] <gefink> but adyust at first the direction ofthe axis
[20:27:25] <SWPadnos> for a knee mill, or a mill with a saddle/table, this means that +Y moves the saddle toward you, -Y moves the saddle away from you
[20:27:43] <SWPadnos> -X moves the table right, +X moves the table left
[20:28:00] <SWPadnos> -Z moves the spindle/head up, -Z moves the spindle/head down
[20:28:48] <SWPadnos> once you have that set up, such that jogging will move in the correct direction, you can choose signs for homing
[20:29:05] <owad_> thanks
[20:29:15] <SWPadnos> hope that was helpful :)
[20:30:25] <owad_> is signs for homing in stepconf or the emc2 app? I don't see it in either?
[20:30:38] <Hugomatic> Hi,
[20:30:48] <SWPadnos> put a minus sign on the number :)
[20:30:53] <gefink> owad_: its in the stepcofwizard
[20:31:08] <owad_> thanks, both
[20:31:56] <Hugomatic> Hi, I'm having problems with EMC. After my machine rebooted, the configuration I was using doesn't work anymore and emc crashes. However, other configurations work. Any ideas?
[20:32:16] <cradek> what do you mean by crashes
[20:32:45] <Hugomatic> cradek: I get the following message: insmod: error inserting '/usr/realtime-2.6.24-16-rtai/modules/rtai_hal.ko': -1 File exists
[20:33:26] <cradek> sometimes there are better error messages in dmesg. also check to be sure you have the right kernel (-rtai) booted
[20:34:12] <Hugomatic> cradek: I have the rtai kernel, but I don't know what dmesg is...
[20:34:40] <cradek> you run dmesg at the shell to see the kernel log messages
[20:34:47] <jepler> Hugomatic: open a terminal, type "dmesg", press enter, then look at the last dozen or so lines for clues
[20:35:44] <jepler> (or put the lines on pastebin and let us read 'em)
[20:36:35] <Hugomatic> It's full of funky stuff, but I don't know what it means... http://pastebin.com/m14b630a9
[20:37:16] <cradek> [ 694.079289] BUG: unable to handle kernel paging request at virtual address f8d8b798
[20:37:23] <cradek> this probably represents bad hardware
[20:37:42] <Hugomatic> cradek: you mean my computer is bad?
[20:37:44] <cradek> do you know why it rebooted right before this problem?
[20:37:56] <Hugomatic> a fuse blew
[20:37:59] <cradek> yes possibly.
[20:38:19] <cradek> maybe try rebooting and run memtest for a while. it is on the initial menu.
[20:39:14] <Hugomatic> cradek: .... and I'll get a coffee as well. thanks for the hints
[20:39:23] <jepler> I also notice that you have 1GB RAM. There is a problem with the current rtai version on hardy with 1gb ram, but it doesn't happen to all people or all the time.
[20:39:27] <cradek> welcome, let us know what you find
[20:39:32] <jepler> you might try booting with mem=900M added to the kernel commandline
[20:39:57] <Hugomatic> ok guys, thanks...
[20:42:00] <gefink> good night
[20:44:17] <owad_> when I home an axis, it moves in the opposite direction of when I click the '-' button to move. Is that how it's supposed to be?
[20:44:36] <cradek> you can put the home switch on either end.
[20:45:18] <cradek> http://www.linuxcnc.org/docs/html//config_ini_homing.html
[20:45:24] <owad_> thank you
[20:45:25] <cradek> have you seen this?
[20:45:56] <skunkworks_> http://www.cnczone.com/forums/showthread.php?t=62036
[20:46:09] <owad_> I think I saw that diagram in the manual, while skimming throug the manual, but I didn't recoginze it for what it is
[20:47:06] <cradek> skunkworks_: hmm, the name just changed didn't it
[20:48:10] <cradek> or maybe this is not the emc2-based machine control
[20:48:24] <cradek> it's not very clear what it is.
[20:48:34] <skunkworks_> no - I think ray said it is a stripped down cad/cam with emc post
[20:49:23] <skunkworks_> <rayh> They are working toward the release of a GUI front end very much like the geometric CAD/CAM part of Smithy's EZTrol
[20:50:06] <skunkworks_> <rayh> No linkage to EMC2 but there will be an EMC2 post.
[20:50:37] <cradek> cool.
[21:30:32] <jepler> curved traces on milled or printed circuit boards: cool? or annoying affectation?
[21:32:58] <skunkworks_> As long as it gets the job done..
[21:34:45] <SWPadnos> gross
[21:34:51] <jepler> I seem to have now added "obsessively add curves to every wire bend" to my routine with eagle (after "obsessively move every trace around after using the autorouter")
[21:35:09] <SWPadnos> unless you're going for that "early '70s hand-laid-out" look
[21:35:29] <jepler> drc
[21:35:46] <SWPadnos> I don't think rounded corners are any great help
[21:35:53] <SWPadnos> beveled corners can be, but not rounded
[21:35:59] <SWPadnos> afaik
[21:36:14] <jepler> oh I'm not saying they're functional
[21:36:18] <SWPadnos> heh
[21:37:30] <dmess> just pretty... LOL
[21:59:29] <archivist> I might use curved for microwave but thats about it
[22:17:24] <dmess> CRAP it looks like MY DB25 connector on my board has different pin out than std NIST stepper lathe i wanna configire..
[22:51:23] <stustev> good evening Jepler and SWPadnos
[23:13:54] <tom1> woohah! just got probing to work. a tip: test probing onto a 6" scale laying over an edge ( or use a parallel). If your probe doesnt work, it just tips tit over rather than bending binding crushing,,,,
[23:33:41] <dmess> good show tomp1... cudos
[23:34:05] <tom1> last nite i saw the shuttle k45 barebones at tiger direct for 99$. micro atx, with serial and parallel. the rtai mailing list has some info but i cant get at it.
[23:34:26] <tom1> dmess: thx :)
[23:50:48] <toastydeath> arrr
[23:51:07] <toastydeath> my search for a content management system that does what I want is not going well
[23:52:07] <dmess> how much damage can i do to a .HAL file by bulk changing pin asighnments??? will it pouch ALOTA stuff or a little??
[23:53:06] <rayh> Won't trash anything if you do it right.
[23:53:41] <rayh> Typos will stop the startup but the error reporting is pretty good.
[23:54:03] <dmess> i nee to check if my cable is a straight thru db25 or an rs232 null modem
[23:54:37] <dmess> as a null the drive would work...
[23:55:07] <dmess> i think
[23:55:31] <dmess> for 2 axis anyway...
[23:56:12] <dmess> im working from the NIST-lathe .hal file
[23:56:41] <dmess> bcz i only have steppers... with NO feedback..
[23:59:25] <dmess> still need to retrieve a vfd and a 1/2 HP 208 single phase motor for the spindle