SWPadnos: YAY BABY... http://cgi.ebay.com/METER-SHUNT-2000-AMP-50MV_W0QQitemZ290353626846QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item439a6cbede
that's enough to meter a modest windmill
2000A at 1mV?
I presume the 50mV is derived from ohm's law, and is not the actual rating
ah MV not mV :)
enough to meter a modest thunderstorm
No, it means that you would wire a 50mV FSD meter across it to measure 2000A
yeah that's what I thought, but it's MV not mV
So you were right about Ohms law. And that is just somebody being dumb.
More than likey it's 50mV per Amp
for every 50mV you rad on your volt meter, that's one amp
50mOhms resistance? Could well be.
ummm 50mv/amp would be really bad... that would be pretty high resistance ;)
so they don't bother marking ohms in power industry?
I think shunts are always rated for full scale mV (50) at full scale amps (2000)
if it is 50mV - 2000A then that is 2.5uOhms, and that seems unlikely (though it is a pretty big chunk of metal)
That sounds right
calibrated chunk of metal ;)
(100 W dissipation at 2K amps)
It's quite well finned for 100W...
never mind the metal. will you ever get a connection at 2.5uO?
Heat means errors
connection is unimportant (4 terminal)
The current is the current, and you will have no current in your sense wires.
oh yeah, pure voltage measurement
So even with 100V drop across the power terminals, you still get an accurate measure of the current from the 50mV you measure.
No, it would melt :-)
Only until it had welded itself together.
those aren't really heat fins, they're the resistive elements
Aye, but the only reason to have many of them, spaced, is cooling.
easier trimming also maybe? but yeah heat too
ot: is it too rude to leave a note in your engine bay that says "please do not overfill the oil" ?
asking for trouble if the "have a sense of humour"
if you don't ask, they overfill
Going to get more of a problem. Our cars have a "low". "correct" and "take some out" mark. Bound to cause confusion.
Oil levels tend to rise on DPF-equipped diesels.
If you let it get too high, you pull oil over, and the engine revs to 6700rpm and then dies.
it makes me wonder if they bother to tighten the bolts they loosen
"please tighten the bolts you loosen"
(And you can't stop it, as the fuel it is running on is its own engine oil)
andypugh, that's nice
Nobody touches my my vehicles but me. Then when I am riding along I know that the wheel spindle is tight. Or I know that I don't know, and check....
good thing Toyota doesn't make diesels
? Yes they do.
do they sell them in the U.S.?
Now that I don't know
I'm going to go back to the dealer tomorrow and get them to remove some oil
Yes. Too much can be dangerous.
Though less so with a low compression engine.
there is a TSB that says not to put too much oil in the engine, causes failures
Yes, overheated, aerated oil is not effective.
Valen: Google Rotrex
[01:19:04] <andypugh> http://image.automotive.com/f/incoming/10301775+pheader/0512_hrdp_02_z+rotrex_supercharger+boost.jpg
quick question... i must be an idiot... i'm a bit lost with classicladder
i know how to configure the hal to load it, but i need to actually write a ladder diagram and i need to know how to load the gui so i can do it
i guess i'm kind of lost without a desktop icon to click on :)
i read the emc wiki and i entered what it said into a terminal but it wouldnt load anything
what am i missing
i seemed to have been hit by a fork bomb or some app is run away spawning... anyone else? ( was running halrun, halscope, firefox, scite editor, hal had 2 stepgens, 1 freqgen, 1 hal_parport )
symptom "failure to fork child, resource tempoarily unavailable" when attempting to open any app.
tom3p, go to a terminal and run top
firefox and its flash viewer are resource hogs on my boxes and need restarting when they get in the way
archivist_emc when the fork bomb hits you cant open a terminal you cant run top, there are no resources left
i rebooted and found that this is a problem with linux in general, and am trying some measures per http://hightechsorcery.com/2008/02/preventing-fork-bombs-ubuntu
oh, was also running gCAD3D, it looks like its APT underneath
MarkusBec_away is now known as MarkusBec
EbiDK is now known as EbiDK|AWAY
does anyone know if you can get heekscnc to install on AMD64?
i'm having issues figuring out classicladder
i get how to configure the hal file to use it and all that stuff, but i need to make the ladder diagram and i dont understand how to start the user interface so i can do that
i read the wiki and entered everything into the terminal like it said, but nothing loads
i was under the impression that it was installed with emc2, do i need to physically install software?
"Classicladder version 0.7.100 is included in emc2.1 to EMC 2.2.8. "
i have 2.3.3
so i need to install it?
one of the sample configs loads ladder.. iirc
let me look
you have 7.124 apparently
yea, there's a config in my hal that looks like it loads it
* MattyMatt leaves expertise to experts now :)
i removed the # and nothing loads at least to my knowledge
but i didnt think that loads the gui
which is what i need to write the ladder diagram, correct?
i'm using a mesa 5i20 card if it matters, so no stepperconfig for me
look at the demo_step_cl hal files
i searched for it in the wiki and it came up with some easier to understand instructions
i'm gunna try what it said
oh wait it said it's way out of date
and it links me to the page i already saw
i cant find any demo_step_cl configs
[17:29:31] <skunkworks_> http://git.linuxcnc.org/gitweb?p=emc2.git;a=tree;f=configs/demo_step_cl;h=d37f0949fdbc8c5df748a9f19b98ff4e1a301f4f;hb=HEAD
I don't know why they wouldn't be in your sample configs.
phooey. local eng supplies don't carry brass stock
i really just want to understand what i'm missing, rather than just copying another config
compare a working one with yours
if you can
# things out until it stops working
Combibe et Vide
I wish I could remember Latin declensions :)
these online translators don't recognise the imperitive in English
the problem with all this is everything i read assumes you know something, so none of what i read makes any sense.
so copy a working config for now. it's generally easier to understand a working system
I think you are right about when it jumps up from zero
a working config doesnt work
ok i figured it out... the sample config line in my hal had a dash in there for some reason so i deleted the dash and it worked
and now i see the ladder editor under file in axis
gracias for the help guys
good evening at all.which install the mgcodegenerator.py on blender ?
[18:22:58] <frallzor> http://pici.se/p/ohuQyNIIJ/
please some people can help me for install the mcgodegenerator.py in blender for export dxf file in gcode ?
I suspect that nobody here has used mcodegenerator.py, and probably a very small number of people here have used Blender
so I don't think we're the best place to get help
SWPadnos, thanks . have some thing for a good converter the dxf in gcode ?
yoyoek knows about it when he's on. did he write it?
I don't have experience with any of them, sorry
did you try heekscnc?
frallzor: SRSLY?! looks like a big machine...
i use first example for dxf convert in gcode.
don't know heekscnc
mozmck, you what use ?
I don't use much yet. I've just hand written what I needed so far.
You can get heekscad/cnc packages for several versions of ubuntu here: http://yamato.hyte.de/packages/heeks/
motioncontrol, open blender, and in the top menu there's a dropdown box with SR:1 - Animation?
I haven't played with it much but others say it is usable.
blender is usable, after many weeks of pain
MattyMatt, i use autocad and have dxf file.what is the good converter for traslate in gcode for emc?
dunno that, but I can help you use a blender script
MattyMatt, ok please help me blender is good. i don't have menu Animation
motioncontrol: try #blender, this is #emc
or #blendercoders for trickier questions :)
MattyMatt, ok thanks
as big as a huge kitten
2750x1630 "effective area" or whats its called in english =)
that's bigger than an 8x4 sheet
mm that is
mm as in millimeter not Mmmmm donuts
is 8x4 common?
it's universal, for plywood, I think
in lumber, yes.
even metric ones are really 8x4
isnt 2750x1830mm a common size too?
might be for mdf
No, 8x4 in lumber speak is 2"x4" rough cut
2400x1200 ish is 8ft by 4 ft ish
frallzor: are you going to do routing on wood or ?
but it seems it works fine for some sheetmetal too
doing a plain old mechmate =)
they look strong enough to mill steel
yeah some steel seems ok too, if you dont cut too much at a time =)
if I get a nice enough spindle most should works nicely
Damn Im happy I dont have to work with this in the garage :P
gantry looks like it would hold a drill press head
is cheaping out on the spindle the way to go with a mechmate tho? :)
well the electronics will be the bitch on this build, mechanics is all good to be welded
so might aswell save for a nice spindle
the steel alone cost more than my last entire build =P
I can imagine
but it was surprisingly cheap and good
there's a shipyard 2m from here. I'll go there when&if I make a mechmate :)
and now it seems i might get away without "taxes" for the material too :P
and I also get free labour for some reason
all cut out for you? nice
ppl like odd projects
they never heard about diy cnc-mills =P
or maybe they just have, and you've saved them $20k on their next machine
nah dont think so, their machines cost weeee bit more than mine :P and
they do so much more =P
really? mechmate looks pro quality to me
well yeah, pro-diy at least
some ass stole the design and sells it as his own too
without an ok :P
[19:13:46] <frallzor> http://truecnc.com/
looks familiar? =)
if the hardware design is GPL, that's cool
well there is an agreement you have to accept to get drawings and such
I think the creator lives in S Africa
and those guys are in the US so not much to do about it then
still, its pretty lame to just claim that the design is their own =)
well if an american can sue a foreigner in a US court, maybe a foreigner can also sue an american there
it would be fair, anyway ;)
do you know much about them chinaspindles?
those 3kw ones looks interesting
I read that the chinese lathes are all copies of the emco 5
they like to copy BP too :P
but doesn't everyone? :)
i bet they do some "Sorny camcorders too"
at 3kW, I'd be keen to have separate spindle + motor with belt, for servicability
and gearing & smoothness etc
not my cup of tea
I know nothing tho. the last real machine shop I was in was at school
since i dont know shit about designing that =)
that's why I said drill press head. you can get a nioce old drill press cheap on ebay
hmm link one
not really sure what you mean
[19:25:27] <MattyMatt> http://cgi.ebay.co.uk/Drill-Press_W0QQitemZ160378237098
that's the nicest on page one of the search
isnt that a no go for a mill with those?
yeah probably a vertical mill is better
[19:28:42] <MattyMatt> http://cgi.ebay.co.uk/Linley-Vertical-Milling-Machine-Jig-Borer_W0QQitemZ150390158043
mm nice one as it is actually, for the price :)
might be a biiiit over the top for a mechmate :P
yeah. I'm pretty sure an old heavy drill spindle would be better than a cheap modern router tho
a good heavy one with a taper spindle, not just a chuck
fitting it all in the mechmate cradle would be the hard part
you may be able to hang the motor outside the cradle
nah it would sacrifice too much
yeah, it look s like it wants all the weight between the poles of the gantry
iirc, the rails only support below, and depend on the weight to hold it down
ill aim for the chinese one atm =)
it's probably wise
even if it breaks, you can get another the same
seems to be pretty decent support
[19:48:14] <frallzor> http://www.damencnc.com/tools/man/TeknoMotorCatalog.pdf
these seem pretty nice too
yeah they look the business
fairly unbreakable I should imagine
especially in wood
dont know if they sell in sweden though
I want it tax-free
I was gonna say, it's all eurozone but you're not :)
check my ip :P
I forgot .se isn't euro
ah you were talking currency :P
ah but you're EU for customs purposes?
and I know a guy that fix industrial electronics taxfree for me
no i mean VAT
thats the word =)
you can claim that back, if you are registered as a business
So I want it to be available to him from the companies he buys from
or your friend is
those damencnc ones probably is DE only
hmm cant hurt to ask him then
I need to take every chance to get a freebie I can on this build :P
otherwise Ill be dead when its complete!
yeah, if you give him cash, he can make it look like lost profit too, so he'll win on taxes
well I'll pay the price - VAT so its just him +-0 for him
no, because on his company books is the machine which loses 25% value for 4 years
he could claim its for his business too
dunno how he does =)
the only danger is his company is audited, and they ask where the machine is. the normal answer is "broken" or "stolen"
well a single spindle wont be something they ask for, he buys shitloads of elektromotors for repairs and such
hmmm. for the record, I'm not advising, only informing you how to do this tax fiddle :)
well I know that he doesnt do anything bad, and I get a bit of discount
so I assume he knows if its ok or not :P
but I wont ask more :P
"bad" and "OK" are subjective terms ;)
nobody likes the tax rules, except the taxman
but it's how they got Al Capone
you could be 100% legal by keeping it on behalf of his company, and give it back if he goes bust within 4 years
and every time you do him a favour, issue him an invoice marked paid
I allmost registered a company just to get the rid of the vat for a few months
nothing against it, but paying it later wouldnt hurt
only register if you want to be registered forever
well I do want to =)
it is worthwhile if you intend to start a business, but there's a lot of paperwork
want to register my future company as a designer =)
wouldnt hurt claiming a nice name now
you can earn up to 45k gbp here before you are required to register for VAT, but it's optional before that and worthwhile if you are buying capital goods
I hate VAT, it's evil
children pay it on everything, even stuff for their career
atleast students usually get good discounts
I've been paying it on my shoes since I was 11. big feet
now I wish I had the cash+tools to get that linley mill and CNC it
it'll go for around 70gbp is my guess
I'd need a big van to collect it too :)
I don't think momma would like that in her car
or her house
[20:41:15] <jt-plasma> http://i47.photobucket.com/albums/f163/johnplctech/Hardinge/hardinge01.jpg
[20:41:45] <jt-plasma> http://i47.photobucket.com/albums/f163/johnplctech/Hardinge/hardinge02.jpg
the Hardinge is 5 1/2" from the concrete
that ain't yo momma's house
gotta go let the delivery crew put a hospital bed in at my neighbors be back later
anyone have pics how that hardinge looks inside the covers?
[20:48:17] <cradek> http://s47.photobucket.com/albums/f163/johnplctech/Hardinge/
is it going to be EMCed ?
yes he says it's dead
yeah 85-90 I bet
is that a lathe?
looks like one...
wonder if one can do a good diy one :P
given time and money anything is possible. how much do you have of those?
not too much atm :P
spending it all on current diy mill :P
gingery + ikea + emc :)
then just buy one... it's faster and might be cheaper
dunno if ikea make waterproof closets tho
I cut L shaped sides for mine just for strength, but it makes it look like a whole different class of machine, and now I'm gonna box it in with covers
no coolant tho, it's still plywood :)
fraid not. I'm lax at pics
and I always start bragging after sundown
gimme a mo, I'll get a quick flash pic
[21:06:04] <frallzor> http://www.pici.se/p/ZWBWplThD/
family pic for my mill material :P
(the untreated ones on the floor)
some lovely brown tubing as well
not mine =P
leaving my cam plugged into usb drained the batteries :p nice to know yet annoying to find out
what kind of lathe tool goes into this holder? http://www.brw.ch/i2cmsdata/brw/images200x200/W315080.jpg
"Rückzugstahlhalter" in German... ?
I want to see that from the rear of that pic awallin
anyway I'm looking at QCTPs again. some people seem to like the MULTIFIX system a lot too
I would not use multifix on a cnc
were the tool itself would be
[21:20:44] <awallin> http://www.eurospares.com/graphics/metalwork/multifixbrochure/multifix12.jpg
I see what it is, its a withdrawal tool for screw cutting
that toolholder is a "screw cutting device"
seems Dickson or Multifix are my choices for QCTP
no use at all for a cnc
how come nobody has suggested a turret instead? :)
I'm pretty sure I don't want to buy one (2keur ??) and I'm also pretty sure I don't want to build one, I think.
Dickson is designed to go back in the same position multifix is designed to be rotated and fast changes
and the multifix at work does not seen that good
for a hand lathe user multifix would be better
any opinions on tools facing up or down with rear mounted tools? I guess better to press down on the toolholder/linear-rails ?
is this for that home brew lathe
yeah just day-dreaming...
finish the toolchanger!
often folks put a parting tool on the back, upside-down, so it doesn't dig in when it's not stout enough
I broke a parting tool by that reason a few weeks ago
was my bestest tool too
to near the tailstock and it bit
snapped the carbide tip
parting with the tailstock??
tailstock is old and loose not rigid enough in the center
the Sandvik parting tool is so nice when it works though
now to sort out where everything else goes :)
Valen: Are you there?
Anyway, if he is or not, I just had a rather odd happening. My z-axis on the lathe reversed itself in G0, bit was fine in G1
does anyone know a good stepper controller? for selfbuilding, which support microsteps and about 5A/60V each phasis?
are you sure it is not cheaper and easier to buy a geckodrive?
i think so
easier for shure^^
but i think, its cheaper to build them myself, cause i need 7pcs
experienced with this stuff?
I would just build power-stages, and put the logic in software on an fpga or similar
What do you get with PWM current-sources directly controlled by EMC?
I think the current limiting needs to be faster than what EMC can do
andypugh: been looking at more QCTPs, some people like the Multifix type also...
Multifix lets you put tools in at funny angles, which is much more of an advantage for manual than CNC
i want with step/dir inputs
Yes, hardware current limits, but EMC can generate steps (not microsteps though)
I did find those Dickson T.0 holders cheaply on ebay, so that's a plus. Not sure how much the holder and how much the post contribute to accuracy...
with a hardware PWM generator in an fpga you could generate the drive for all output FETs
six of them I guess if it looks like a 3-phase drive
haven't really studied stepper drives... I guess Mariss of geckodrive has some good whitepapers out there
nope 2 phase steppers, so i have 4 wires, i think, i will need 8 fets?
check microchip.com they make the PIC microcontrollers and they have reasonable application notes for a lot of stuff
or IRF, they make FETs and power stages
awallin microchip has a 2 interesting app notes, but they dont use step/dir inputs
what do they use?
they use rs232 for getting the command
that is probably a software issue then to convert to step/dir input
but ive never used ucs before
* frallzor is tired
long day ahead of me with sleeping
*of sleeping even