[Global Notice] Hi all, We appear to be having some European connectivity issues this morning, I'm about to do a tiny spot of re-hubbing, it should only hurt for a second! Have a great day and thank you for using freenode.
spares buttons ? http://cgi.ebay.co.uk/Anilam-Crusader-II-CNC-control_W0QQitemZ230281152197QQcmdZViewItem?hash=item230281152197&_trkparms=72%3A1121|39%3A1|66%3A2|65%3A12|240%3A1318&_trksid=p3286.c0.m14&timeout=1218791090071
now if only i had a westinghouse Producer2 control spares ...
i need a CNC pendant control now!
I installed emc2 on ubuntu 8.04. Then i restarted the pc ant try to run "stepper-hyza", but i receive an error "can't read '/usr/realtime-2.6.24-19-generic/modules/rtai_hal.ko': No such file or directory". It seem it was not installed properly. I followed the instructions on the web site saying i should only run the installation script.
this is the error report i receive: http://pastebin.ca/1172708
any idea what could be wrong
did you install from the live cd
no, i run the installation script
to standard ubuntu
yes ubuntu 8.04
EMC requires a realtime kernels to run
these come on the live cd
i know, but installation script should probably also install realtime kernels
99 % use the live cd's I think loading realtime kernels is up to you if you go your route
this is bnot my route, there are the instruction i got from emc website: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Installing_EMC2#On_Ubuntu_8_04_using_precompiled_EMC2_packages
btw, i need to cast a lead counterweight, anyone got any lead casting tips, apart from 'dont get burnt'
its for the Z axis counter balance weight on my CNC
pjm, dont breath the fumes
ah yes that one too ;-)
we do it here for clock weights
i thought it might be the answer since I can weigh it all accuratly then make a weight to match the Z axis weight
i was gonna make the mould out of wood
not sure if that is practical tho
but the plan would be to cast a bit of 10mm studding through it which I can screw a eye onto
keep a little weight un balanced to keep the backlash hidden
I should balance this one a bit
i have 2 sets of leadscrew nuts on the Z
that preload the leadscrew so there isnt any backlash
but re the mould, u reckon a wooden box would be ok/
my z is currently a 1mm pitch
the idea is to break it apart once its set
ah yes, that involves more muck tho
i wanted to try and be simple
reasonably runny when molten
and wood burns!
yeah i guess that could be a problem
the surface finish isnt too important
just need to get the weight right
i'm using that stepper motor that u pointed out on here
for my Z and its excellent, even with no counterweight it can move the Z perfectly
we also have used metal moulds
doesnt stick to rusty steel
but sheet plaster board and plaster to seal with an external way of holding back the pressure during the pour (in sand in bucket)
or cast iron lump from scrap yard :)
Guest290 is now known as skunkworks_
i would like to controll emc from outside (computer vision), so i have to input commants to emc from another program somehow. Is this possible?
mumu: yes. One way you can control emc is through python using the 'emc' module. 'pydoc emc' for a summary of the commands and status available. this blog entry has an example program that remote controls emc in a very simple way: http://axis.unpy.net/01167419757
-- the program "mdi" installed by emc is another example.
archivist_ub ok thanks for the tips on lead, I'll look into it. I only need to cast this one counter weight then its all done
pjm, what is the actual weight needed
that is the head weight
i have a weight on it at the moment that is about 13Kg
you could do a built-up one so you dont need to cast all in one go
but the weight has to be max 70X70mm and i have about 400mm in length to play with
or make a steal box and fill with lead shot
yeah thats a good idea actually
i was looking at the haas minimill and they use gas springs so i spose that could be another angle if I can find sometihng suitable
car tailgate gas springs
limited travel though
ah yeah that is a good idea actually
boss intending to sell the building here so likely some clock weights lying around
i have a few bloody great lumps of lead that were counterbalances in my radome which has a az/el/roll steerable dish in it
and there is about 100Kg of weights but they are all stupid shapes
a piece of iron pipe with a cap on one end? fill with shot until it's the right weight
if it turns out you need a little more density, you can just heat the pipe with a torch and it'll melt (or at least I think it would be possible)
melting IN the final container is a good idea
I bet 2" pipe will fit nicely in a 70mm square hole
i installed the emc and rtai kernel, and now ubuntu doesnt detect my sound card any more. Is there some kind of limitation for soundcard in rtai?
possibly a firmware or acpi problem
mumu: you may need to also install the package linux-ubuntu-modules-2.6.24-16-rtai
thank you, the installation of rtai-modules solved my sound card problem
archivist_ub, u had one of these 220N motors from arc?
and it worketh my z
u run it up yet? i think the one I have runs a little warm
so i probably need to reduce its hold current at a guess
yep i'm using the same motor on Z
they er dont run cold
ok so praps nothing to worry about
no steppers do get warm / hot I have mine at 2.5 A
nope 2.4 A
and once its been on a while its warm to the touch
* archivist_ub reading switches
i'm probably worrying about nothing
at 2.7A it got to about 50 deg C while working
if you can keep your hand on it, its probably not broken
ah yes its not that hot!!
but thanks for the info, I'll recheck my current settings
and what volts do u supply your driver with?
nor sure if they spec temperature but coiled devices can often handle hot
30V on mine
yeah i looked in the data sheet for operating temp and no mention of it
ra3vat is now known as dimas_
I want an 18tpi tip to mill a thread, cant find any that size on epay
I hate paying full price
i did have some thread cutting inserts i'll find them and look
now i have finished my machine i need to seriously get shot of all the crap i've hoarded
now the crap comes in useful
or ready for the next machine
i am trying to command emc using python. I wrote a simple code ( http://pastebin.ca/1173060
), but nothing happens and emc.stat().position always returns 0. What am i doing wrong?
what is with s.poll(), btw, where can i find all the command that are available?
s.poll causes the status information to be updated. otherwise, the prior value is returned. before the first poll, the values are undefined.
i see quite a few ppl test their machines with the 3d face g-code, anyone know where to get this from?
i've had a quick google and it wasnt obvious
jepler: s.poll() returns "emc.error: emcStatusBuffer invalid"
mumu: probably you need to set emc.nmlfile before constructing an emc.command or emc.stat object, like jdi.py and mdi.py both do
jdi.py shows getting the path from an inifile, while mdi.py shows taking the nmlfile as a commandline argument
another reason you might get this error is if you're not actually running emc when you execute your program..
emc is running
then it's probably the first thing I mentioned: failure to set emc.nmlfile
jepler: where did you upload this mdi.py example, i can only find jdi.py
mdi.py is installed with emc, as /usr/bin/mdi if you installed from package.
archivist_ub, just one more stepper current question, do u have a seperate holding current setup and if so what is it?
ok that was easy then ;-))
have done that in the past but not for this sort of job
hmm /me would like the mazak pointed to on the mailing list http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=360078008407
ha, good first project indeed
that would be an excellent toy to learn on!
hmm - don't think that would fit in the garage..
adjust garage, its worth it
actually - it would probably fit in the garage.. just nothing else..
mib_ggdfat is now known as maddash
hm, why so quiet?
maddash: I dunno, it's been a little less busy lately
after all, since 2.2.6 is bug free and the html/pdf documentation is now complete there's no reason to hang out on IRC anymore
:O 2.2.6 is bug free?!
I'm trying to find the bug status page right now
* jepler wonders whether it's his sarcasm transmitter or receptor that is malfunctioning right now
oh, you were joking.
* archivist_ub has a doc comment in store
jepler: it's your transmitter and my receptor that are malfunctioning
software is never bug-free, documentation is never complete, and even when it is people still don't find the part that answers their questions..
only one bug opened this month? looks like i'll have something to do this weekend...
doc bug, go straight to g83 try and peck drill without an R in the code read doc to see what R should do!
on an unrelated note, I'll be applying for my first IT job in a while.
yuck, job interviews
yuck, IT jobs
boss says he is selling the building here, /me has to do some job hunting!
any tips? don't bring my own keyboard? hide all usb flashdrives? etc?
change all administator passwords..
for the interview? I don't know, it's been so long
(then you know who thinks they should have access) ;)
meh, i'm still psychoanalyzing the job recruiting and editing my resume to fit
I can only think of the obvious stuff: be sure to have no grammar or spelling errors on your resume, and use an appropriate font
not comic sans?
but that's ancient 20th century advice
'nother really long day
but at least it's weekend now
(and soon over there)
warning: that list contains sarcasm
[20:37:48] <alex_joni> http://eneas.juve.ro/~juve/servere/
skunkworks_: close :P
skunkworks_: those are the servers I got last month
I'm thinking about selling them atm..
good night all
ew /me hits a limit on the A axis at 12991 degrees oorf in the other dir now
oops was -12991 deg
did u build your own A axis?
its one of the things on my list to make
its a vertex HV4 with a stepper
12991~=13million detect units (13m * .001) are there .ini limits on rotaries?
dunno but there was some natter about math limits the other day
"err: outta fingers & toes"
32 fingers aint enough
archivist_ub: exactly what are you seeing?
it just stopped as if it was a limit
was hand milling a pocket
you can't jog it or anything in that direction?
yup went to -12991.xxx and stopped would jog back though
what are the limits in your ini file for that axis?
no idea set it via stepconf
look in the ini file ;-)
MIN_LIMIT and MAX_LIMIT
-9999 and 9999
well there you have it
those are in machine coords, if you have any offsets or such that could account for the other 2000 degrees
hm, why not have a min_limit = disabled or something ?
* archivist_emc pokes stepconf for low numbers :)
what is the SCALE value for that axis
rotary tables with limits is kind of a paradox :p
then you won't hit a real limit for some millions of degrees
anonimasu: er yes thats what I thought
stepconf's default limits are "very big" when measured in inches and applied to a linear axis
even in mm they are big
dunno if there is code in stepconf that would treat rotaries differently
how does +/-9999 relate to |12991| ?
other axis have sensible limits for the travels I have
tomp: I suspect that if archivist went the other direction, he'd hit the limit at 6999 or so on the DRO
switch to machine coords and see?
there is probably a 3000 deg offset between his DRO numbers and the actual motor position - motor pos is zero on power up and never gets changed (except by moving), while DRO changes due to offsets, touch-off, etc
hehe long time to hold a pinky on the kb to find the other limit :)
ok, so it's just the '0' posn offset, thx
g0 30000 ;-)
I did touch off to save returning to 0
stepconf sets the FERROR to 1 and MIN_FERROR to 0.25 when the axis number is 3 or the uits are mm
vs. 0.05 and 0.01 for axes 0-2
bleh slow steppers....900 deg a minute
copley has actuators using linear motors ('Servotube') and they say it has 'Built In Position Sensor, no encoder required, industry standard sine/cos output'. I only know of Heidenhain sin/cos encoders, are there industry standard converters (sinus/ttl)?
sounds like a resolver style feedback.
I know jonE is making some resolver to quad converters.
didnt think of resolver, thx
wow, yaskawa, miranova, indutek all make sin/cos->ttl converters. and an ap note from TI on how to dsp your own http://www.eetindia.com/ARTICLES/2001MAY/2001MAY14_AMD_DSP_AN1.PDF?SOURCES=DOWNLOAD
Well, I'm getting better.... Instead 5 seconds AFTER he leaves, I'm getting him 5 seconds BEFORE he leaves
you're getting better