ok, serious question: i have here what i believe to be a linear encoder embeded already into this balcrew/thk slide setup i salvaged from another machine...
I have a contactor, haven't decided if I'm going to use it
can this plug into my serial port or soething to be my X axis encoder for closed loop?
would i need an interface card for the encoder to hook to the pc?
probably will not work on a serial port
you could use it on a parallel port if you go slow enough
and when I say slow enough, I mean as fast as you can go and still have it work
or you can get a card
are you using a laptop
i only have one paralell port that my stepper drive is on
maybe i should invest in a pci paralell card
you are doing one axis?
no it's 3 axis
only one slide has the embeded encoder though
you only need 2 inputs
maybe a breakout board before the stepper driver and use the same port?
eric_u I just uploaded that pdf, dont make my efforts go to waste now.
i think there is extra input pins it's not using
where did you get it?
eric_u Happy Fairy Land.
I'm waiting for the download 10 secs
that's the same one as you posted the url to before :)
yep, but not everyone can dl from the groups and you never said anything
from Marriss, my favorite right wing nut
chr0n1c: steppers with encoder feedback is an advanced configuration, and of questionable value. I recommend you don't worry about it until everything else is working
cradek what's the questionable part?
cradek "what to do" when the two dont match up?
yes that, and a properly configured stepper system doesn't really have any use for it
Ander's schematic applied to my problem more since I'm not building a power supply
it's built in to the drives
I lost .015" on X yesterday, made the final part look like crap.
like I said, I have a contactor, but I'm thinking that is not an appropriate response to an estop
the contactor keeps the drives from trying to stop the motors, and just trusts to chance
eric_u is it a DPDT contactor?
Jymmm: do you know what's wrong with your setup that causes that?
cradek: I wish I did, I've been fighting this for months/years... At SWPadnos suggestion, I turned down the amp, that helped. I had overheating the enclosure, got that resolved. set feed rate to 20 IPM, just in case, but still happened anyway.
using a stepper with an encoder is a moderately interesting data fusion problem that isn't nearly as easy or useful as it looks at first blush
cradek: I probably should try EMC, have the PC setup, but not enough juice in the gaage to power the 20" crt I have out there and a PC plus all the rest of the spindle, drives, shopvac, etc.
people have worked on the servo w/encoder combo with linear encoder which is analogous problem
cradek: I'm watching the amperage draw on a wattmeter I have.
Jymmm: are you still using a laptop to do software step generation?
is that the laptop that fails the rtai latency test??
laptop, drives, spidnle, shopvac = 12A and not at full speed either.
I thought we tested your laptop and found it to be bogus
cradek Yeah, still using TCNC atm.
your laptop will be just as bogus in dos - but you won't see the software detect it
20" CRT = 2.5A
trust me - mine was
[00:20:45] <skunkworks> http://www.cnczone.com/forums/showthread.php?t=35739
Ok, I have a 220VAC in the garage for the dryer, Is there a sbale I can amake to utilize the 20A circuit?
you'd have to ask an electrician
obviously you could use both halves of it (that's what your breaker box does for the rest of your house)
Oh, I'm clueless on electrical
220 440 1ph 3ph all that stuff.
all I know is that if you have a 3ph motor turning the wrong way, flip any two leads.
Hell jmkasunich (I think) had to explain the diff between a universal and induction motor
ty for that too =)
cradek: I've been on the lookout for a ~12" LCD display, but nothing so far "cheap"
I've noticed that too - they're all 15" and $150
mschuhmacher what are you doing?
12" and $89 would be nice
12" and $40 would be nice
since they only do 102x768
heh mine's more likely
used, I'd expect less, especially when you can buy a 19" for $150
I still use crts for most stuff - they are virtually free now
Jymmm: nothing special in the moment
I rarely buy new computer parts
mschuhmacher is there a reson you were veriosning me?
CTCP VERSION reply from Jymmm: mIRC v6.17 Khaled Mardam-Bey
OH NO the secret is out!!
Usually I ban those, as mayn are up to no good.
Jymmm: veriosning ??
Jymmm what is veriosning ?
mschuhmacher you are playing aroudn with your IRC client
Jymmm: If I offended you, it was not my intention
Jymmm: I´m not very experienced in IRC
mschuhmacher it's okey, but when most do those things, it's with malicous intent.
19" LCD walmart $170, eeeesh
i hate walmart
15" LCD $170
go to best buy
i bought an off brand lcd there 17" for like 170 and it is badass
I boycot Best Buy after the crap they pulled sendig your credit card info to MSN and signing you up to a subscription
that is crap
I stay away from best buy because everything has a little bit of scam involved - usually mail-in rebates that they hope you'll forget or screw up - rarely is there a real price on anything
and salespeople trying to sell me bogus warranties
law suit because of it http://www.girardgibbs.com/bestbuymsnclassactionfaqs.asp
uh infant/toddler hiking boots? wtf?
haha $85 for infant hiking boots!
there are suckers born every minute
* cradek <- even buys shoes online
but not infant hiking boots...
i never seen an infant hiking!
i dont get out much though
alright folks, back in 90
We are going to the mountains for our summer vacation, so my son needed a pair of hiking boots. This pair has it all: great look, sturdiness, support, good price. ... he loves his boots so much that he was willing to try to tie the laces all by himself this morning, just so he can wear the boots to daycare.
^^ the one review of the $85 hiking boots
awesome, not an inside job
i heart emc
steves_logging is now known as steve_stallings
chr0n1c: did you get your Y flipped the right way around?
yes i believe so
i am getting ready to test it now
i need to come up with a longer y slide i think
at least 6 inches
i only have 4 inches of travel on my y
I have maybe 4.5 - I can do 4x6 circuit boards which is nice
all depends what you want to cut I ugess
and my z isn't working until i come up with a mount for it and a shaft coupler
i am thinking this is going to end up being a nameplate/machine tag engraver for hire
we saw one guy successfully use rubber tubing and hose clamps
4" is a lot then
lol... tubing for a slide?
or the belt?
for a coupler
I have used rubber tubing as couplers. works great
i need 3/16 to .250 i think.. haven't actually checked them with a scale yet
sorry i uh indulged in some....
<--- , earlier
helps me concentrate on projects... but slows down my brain a bit
get thee away from the machinry
no i work best stoned i swear to it
i was high when the old man taought me how to program the cnc's at the first shop
I hope you have a very small machine
[01:02:58] <skunkworks> http://www.electronicsam.com/video/MVC-341W.MPG
if i was drinking it would be a different story
lol i know
ok.. in axis
for anyone who might be listening
how about seperate feedrate over-ride for program speed and for jog speed
jog speed is separate, but feed override applies to everything
that's not really an AXIS issue - that's how EMC itself does it
yes... this is just something i thought would be nice while i was sitting here playing with it
do you mean feed override shouldn't apply to jogging?
you see how to change jog speed right?
not to apply it to jogging
i see the two sliders
I can sure sympathize with that opinion
or make jog speed a constat and apply the over-ride to the constant and to the program
say 100 ipm always for jog
ok I don't sympathize with this opinion so much :-)
and then your over-ride would apply to the 100 ipm jog and to whatever the max speed in the g-code is
thanks for the wisdom guys! i'm off for now...
about that cnczone thread, does any cam software actually use subroutines?
trying to figure out what this means: "Finally got around to running EMC2 an anger today"
eric_u: good luck divining meaning from that
I didn't know that there were machines that didn't have pci slots
I started buying PCIe cards at work, but I figured that the PCI would be good for at least another generation
That guy makes me look like an english professor, but if I were to guess he's bitching about not having a G65 / macro b equivlent
the anger today thread on cnczone or something about Macro B?
[02:25:16] <eric_u> http://www.cnczone.com/forums/showthread.php?t=35739
did he ever complain about macro b?
here is something about Macro B http://www.imakenews.com/gefanuc/e_article000076528.cfm
I thought maybe mach 3 ate his children or something
I think this thread means he likes it
yes it does
I don't see any complaint...?
but I was wondering where the anger part came from
I can't tell what he is saying
he does mention running emc1
maybe his other software (whatever it was) sucked
I think that's the guy who was working on "Adaptive Clearing"
trying to sell it to CAM companies
IIRC, adaptive clearing was a material removal optimization scheme
that "use it in anger" thing is an expression... means used it for real, instead of just playing around or practicing
cultural differences then
interesting - I had not heard of that. must be a uk thing.
with a typo and unfamiliar slang it's pretty opaque to me
I think the culture in question may be "military"
usually to refer to weapons systems that have been used in combat vs. testing and trials
some google hits "The Israeli anti-ship missile, the Gabriel, had yet to be used in anger. Its performance against a real-life hostile target was as of yet unknown", "This was the second and final time the Sea Hawk were used in anger"
the non military usages have a distinctly UK sound to them
I guess I have heard that in reference to weapons
did anyone else know there are wire feeders for TIG welding?
I think I did know that
that is so cool
usually stick welding though, I think
i'm specifically talking about TIG
like, instead of handheld feeder rods
I mean you feed in a stick
yep back in the mid 90's the place I worked at we had a wire feeder set up on a syncrowave 350 to weld inconel packers
[03:28:09] <stiles> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?EmcFeatures
mentions a macro language as finnished, is the details of that language detailed somewhere?
there are "o words" which let you do G-code subroutines and such
I'd say that's a cut and paste error
I'm not sure if they can do I/O
and I'm not sure about where they are documented
[03:29:51] <SWPadnos> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?action=history&id=EmcFeatures
they can't do I/O (AFAIK) - I'm pretty sure the macro item just got moved along with the pluggable kinematics item
steve_stallings is now known as steves_logging
thanks guys, sorry for my lack of responce but I got IM swamped
[04:00:55] <tomp> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?HalSchematicsUsingGschem
(now beginning stepgens & freqgens)
no, three m's
03jmkasunich 07TRUNK * 10emc2/src/hal/drivers/mesa_5i2x/5i20_vhdl/Makefile: files don't depend on themselves, even tho VHDL sometimes requires a 'use' statement for a file inside that same file
hey if i pause axis gui during a cycle, i jog the machine and rereference the Z?
er, can i
cuz toolchange, spring collets, life sucks
can you just write the Z move
into the program
not with R-8 tooling
they make like, spring collet chucks
with an R8 shank
yep R8 shank to ER collets, used them for years on CNC knee mills, they work great
I think the ones we had were ER32
that's what we have
or go tormach
write the zmove?
no i need to rezero the Z axis
im not buying new tool holders
you tell em!
or how about just an EM holder?
they won't pull out ;)
or how about i have tool collets, they work really well, can i jog and rezero an axis when i pause a cycle in axis?
guess well just have to see
I don't think that is possible
what about writing one program per tool?
is whats gonna happen
joint 0 following error?
acemi_ is now known as acemi
_renz: when did that happne?
after an arc into a line
heh, on the second pass on thqat path
google found suggestions on the wiki im trying that stuff
Are you ferror's set high enough?
that's usually the case..
g1 f5. x3.45 y1.1875
G01 X0.250000 Y1.187500
in a program is giving weird errors
okay now the p[rogram is running
i adjusted all the ferror stuff
nm it did it again
[09:36:32] <Dallur> http://orz.4chan.org/wg/src/1176077609065.jpg
reboot to mach, bbl
i MDI'ed to the point the previous line ended at
and restarted the program and it worked
_renz: when you say it's not working.. what is the error?
Dallur: that's soo cute :P
alex_joni: If that does not make people want to use standards I don't know what will
error is it estops the machine, pops up following error msg
_renz: how manu pulses are you trying to output?
can someone help me do this: http://img470.imageshack.us/my.php?image=lathera1.jpg
josesito: either you beg until somone with a cam program that can do lathe g-code does it..
or you could open a g-code reference and write it yourself :)
you have the center of your arcs..
and the endpoints..
yes i'm trying but there's something i don't know
the first arc from right to left...i don't know how to do it
i think it has something to do with G02 I,J,X,,Y but i'm not sure
and there are 2 more arcs like that one...
anonimasu: where can i find a g-code reference?
in just a sec
[12:42:36] <alex_joni> http://axis.unpy.net/files/gcode.html
[12:43:20] <anonimasu> http://www.linuxcnc.org/docs/EMC2_User_Manual.pdf
or what alex posted :)
anonimasu: can you verify it?? (i don't have emc installed)
im at work
bye then i hope it's good =)
WooHoo! A medical reason to smoke and drink... http://www.newslocale.org/health/hnews/drinking_coffee_and_smoking_may_avert_parkinson's_risk_in_families_20070410263.html
Jymmm, I'd like to see the citations used in that article.
Guest453 is now known as vvhh
do you know anything about layer 3 switches?
good night all
alex_joni What about them?
I have a question about estop circuits
If I use the enable output relay on my drives to interrupt estop, how do I get the machine out of estop?
the advantage to the enable output is that it is a relay that opens if there is a fault
Are you trying to setup your EMERGENCY STOP circuit so that the computer can ENABLE ESTOP circuit?
like the computer hit the big red button?
should I do that?
there is a estop output
Well, ok this is *MY* thought... MAyn use E-STOP as a "boo boo stop" and not as an "EMERGENCY LIFE IN DANGER STOP"
The link that I gave you yesterday from Mariss is a "LIFE IN DANGER STOP"
that's what I want, but it doesn't really work for me, that circuit anyway
what doens't work about it?
I don't have a power supply
then how do you powr your system?
ok, and you dont use a transformer or power supply?
pure 120VAC ?
ok pure 240VAC ?
pure, just like it flows in the streams in the Pennsylvania hills
That circuit is the same, you just need a relay that cna handle the laod is all
the only reason I don't want a big contactor is that I would like to give my drives a chance to try to stop the motors
freewheeling is a bad second choice
eric_u: it comes down to why you think you might have hit the button
eric_u That's fine, just add in a timer relay for lets say 5 seconds.
well, I definitely want a button that shuts it down
if you hit it because an amp failed shorted and is applying power direct to the motor, you'll want it to kill the supply
Jymmm: 5sec is an eternity
brushless shouldn't go under those circumstances, correct?
jmkasunich adj timer relay =)
eric_u: probably not - runaway is less likely with AC servos
I was thinking about getting a safety relay that does that
still can happen - dac failure for instance, or encoder failure
jmkasunich and hopefully the fuses take care of that part =)
again, ti comes down to what you expect the problem to be - if its equipment failure, then you don't want to count on the drives to stop the machine
dac or encoder should be handled ok by the drive after it is disabled, correct?
if its "oops, its heading for the clamp (or your hand), then faster stop is better
so throw a big relay across the dc bus of thedrives?
that might be a little extreme ;-)
erdizz you said you didn't have a power supply? How did you get DV bus from 240VAC ?
Jymmm: diodes ;-)
there is a power supply, only I can't disconnect it from the drives
it's built in
but they do expose the dc bus
Electrocraft was like that
nothing an external brake wouldn't fix ;)
before JK killed them
Guest762 is now known as skunkworks_
I don't think I can get a big enough brake
one of my servos does have one, holding brake only
eric_u that ciruit is nothing fancy, you could have 20 E-STOP buttons connected to it if you wanted, it just kills and discharges power when the latch it broken.
you can add in there an adjustable delayed timer relay to moment tarily brake then remove all power.
I guess I'll need another contactor to dump the dc bus
who did I kill?
you killed electrocraft
the electric car
they used to have a link on the ab site to electrocraft docs, but it's hard as heck to find it
[23:36:22] <Jymmm> http://www.grainger.com/Grainger/wwg/itemDetailsRender.shtml?ItemId=1611783862
.1 to 10 seconds
wonder if I can just use the ultra3000 manual
ab website is microsoft only
or so they say
nothing on the ab website is likely to help for electro-craft stuff
there used to be a link on the motion control home page
to the manuals
AB hates all vestiges of reliance electric, and would like them to fade away
(they sold off most of reliance just a couple months ago - dunno if whats left of EC is still around or not
* jmkasunich started with Reliance
the servo drives look to be electrocraft products
shows how much I know...
but everyone sold those drives
giddings, electrocraft, and ab have all sold the drives I'm using, probably more
(I'm completely disconnected from motion control - EC is in Eden Praire WI I think
same with the previous generation drives, I have quite a collection of those too
yeah, if a giant meteor hit eden prarie, motion control as we know it would be 80% destroyed
oh, well, ab manual is a lot better than the electrocraft manual anyway