how would you determine on and off using z?
if the program was going ot put the mill into the work, it would instead turn the laser on
the machine doesn't know where the part is
all it knows is where it is - so i'm not sure how you'd translate the arbitrary dimension, z, into an on/off command
There's also the PPS too
But spindle speed some more reasonable for that
not to mention laswer pwr
we don't need to control the power level really
as long as we can keep the feed rate quite constant
what about PPS ?
Pulse per inch
i'm totally green, i've been reading linuxcnc.org all day :)
i forget which one it is
i dunno, but it sounds like it would be best to just have the machine on during a feed, and off during a rapid
depends on if it's cutting or rngraving
it will be engraving
yes, whatever is good with co2
Casue you know you need to avoid PVC's
there are lots of things that make bad gasses, we've been researching that :)
also we're setting up a very good ventilation system
Optic: Doens't matter, the HCL also ruins the optics
we have a lot to learn :)
What power is this CO2 laser?
i'm looking at hpgl to g-code converters
the machine is a ULS 25PS
with a totally broken computer
the laser is a synrad 48-1
That's the one with USB iface isn't it?
nope, it's old school
the old controller had a centronics parallel
Ah, it's PPI = Pulses Per Inch
[00:09:00] <JymmmEMC> http://www.gccworld.com/application.php?PROD_TYPE=laser_engraver
we've been able to control the laser and the steppers
our electronics geek is making an emc-compatible parallel port control board
did they use a printer driver for that?
yeah, it was a custom windows 95 printer driver thing with CorelDraw
that's so cool
i just think a printer driver for a laser engraver is cool.
i don't know anything about the subject, just it sounds neat.
toastyde1th: Oh, yeah. it's just hpgl
which is the kind of control we want
is emc the right thing?
it looks like it is right
Optic: Silly question, why not contact ULS and get a replacement board?
emc is more for cutting than drawing things, imro
I think spindle on/off isn't real time enough. You might either look at z or the digital i/o like http://www.linuxcnc.org/docs/2.2/html/gcode_main.html#sec:M62-to-M65:
jymm: ULS won't talk to us because our unit is too old
did whatsisname ever get that to work?
the raster scanning with m62
there's a thrid party company who makes a complete replacement controller, but it's expensive
besides, this is a fun hack project
Optic: fair enough.
Optic: this guy is using emc in a raster scan fashion: http://smtstencil.co.uk/
so what to hpgl to gcode converters do?
i can't remember who all is using lasers but there are a number of them
wow, very cool
this is very helpful
what sort of work are you thinking about doing?
we don't even really know what's possible yet
signs, artwork, that kind of thing
putting graphics on ipods
it's an experiment, not a commercial project ;)
we did an arduino program to do pwm control of the laser and the required tickle signal
works like a charm
[00:24:54] <Optic> http://gallery.me.com/danfraser#100006
some photos of the thing
god i hate websites like that
what's wrong with html again?
it was just the fastest way to upload photos
[00:45:38] <toastyde1th> http://machinetools.com/MT/machines/index.tmpl?page=detail&ListingID=122179074477250858
anybody need to mill the roof off a car
cradek: It turned out the threading problem I was having was a noisy encoder line
dareposte: nice video!
sorry it was a bit blurry
apparently my camera doesn't focus as well up close
but it showed enough i think
after running 50 of those, i decided a tool changer is not just a convenience!!
and hydraulic chuck too
where's this video?
fenn: youtube, a video of cutting NPT threads
[01:27:11] <dareposte> http://www.youtube.com/watch?v=xWtyjMShFns&feature=channel_page
at least I think that's the one they meant, or else the one of my lathe not working properly on the G33 function. That wound up being noise on the spindle index line
that video is here: http://www.youtube.com/watch?v=vOPqd4JzxA4&feature=channel_page
HALscope didn't see the noise because it was set to 4 channels and I guess was missing it with the lower sampling rate, but my real scope found it, and then when I put HALscope to a single channel it was showing up
* fenn adds video to the wiki
Just a commpent back to using the Z axis for controlling the laser - why not have a Z axis off the board controlling a spring loaded switch. Z down .25" or so and switch contacts, z to 0 and switch loses contact. just a thought
Switch controls laser on/off
if you are going to do that, you could do the same thing in HAL
Z axis is realtime
comparator looking at Z position command and comparing it to a threshold
bglackin: that's exactly what I was thinking of doing
HAL is realtime (HAL is what handles all of EMC2's realtime stuff)
in a HAL
Z at -0.1 -> laser on
Z at 0 -> laser off
the main tricky part about using hal (or a switch) is dealing with offsets
I am a weakling on the dynamics of the software - just thinking how to do it with my limited knowledge
I don't understand the offsets - isn't the laser precise?
I mean any offsets you might have in g-code
<--- shows his gross lack of EMC knowledge or machining for that matter
plus any offset due to homing, etc
it should be possible to account for that
HAL normally only has access to raw motor position, offsets are handled in the interpreter, and homing is in the motion controller
I think the motion controller might have axis position output pins that would eliminate the homing offsets, you'd have to look that up
i expect we're plotting mostly from 2d vector formats and making gcode from that
not running arbitrary gcode
using a real Z with a switch would eliminate that concern yes?
that would be such a nasty hack ;)
bglackin: yes and now
using a real switch would require that you home Z, and would still be affected by any g-code Z offsets
not that you'd intentionally use any Z offsets in your g-code, but...
The key is to write good gcode then with no z offsets P
i am struggling with how to approach quick and dirty cnc work
it seems whenever i have something simple and stupid to make, i always waste more time goofing around trying to just get the part made rather than if i'd sat down and just wrote the code
precision computer control + quick and dirty
sometimes all you need is a simple hole pattern, or a bore, or whatever
"poke hole here"
i need a cord to download from my brain to the machine
do they make those yet?
not that i'm aware of.
i guess part of my problem is that these jobs pop up at the school machine shop, rather than at work
and the school's machine shop is in total shambles with bits everywhere
so even doing something like finding a vice stop can take an hour
i guess the lesson is it's probably better to just do it like any other part instead of trying to fudge offsets and things
you just need to cad model everything in the universe
then when you want to do a quick and dirty mod, you can do it the proper way
anyway if it's that quick and dirty can't you just use MDI or jogging?
if i'm facing something long it leaves a poor finish
i was thinking about mdi, but haas controls are really crappy for having control over that
there's no way to keep the machine still while you make sure it's not going to go 40 inches into the table, for example
other than trying to hit feed hold before it moves
i use the e-stop :D
after it's made it a few inches into the table already
not recommended though
yeah, i'm pretty good about not crashing machines and would like to keep it that way
fortunately my machines are all stepper and wimpy
so crashing them rarely even breaks a tool
lucky thing for me
good to learn on
the cnc'ed bridgeports are that way
but the real machining and turning centers tend to mangle things really nicely before they come to an abrupt halt
toastyde1th: Re: Haas controls are... Re: there's no way to keep... Q: Don't Haas controls have a feedrate override and/or rapid override pot/switch/knob ?
your options are rapid 5%, 25%, 50%, 100% (no 0% or rapid to feed position)
spindle +10%, -10%, 100%
feed +10, -10, 100%
and the buttons are not easy to press for whatever reason
they're stiff membrane dealies
hmm, this is gonna take a while...
boring a stepped hole, 1" dia x 1" deep, then 3/4" dia x 2.25" deep
no boring bar?
and I can only spin the work at 150 RPM because it is very off-center
toastyde1th: Well, I guess 5-10% is better than nothing (everything?) Thanks for the tip on Haas, I'll pass it on to a friend who has mentioned Haas. Thanks!
my opinion re: haas is very, very poor.
toastyde1th: it could be worse
I've made about 10 of these things over the last 6-8 years
they were all manual - turning the cranks
what ARE you making
its a jig used in labs, to test "crack isolation membranes"
like coatings for glass?
the membranes go over concrete floors and under ceramic tiles, to keep floor movement from cracking the tiles
I helped design the "ansi standard CIM jig"
there are only about 10 labs in the world that care, but I've made jigs for pretty much all of them
paid for most of my shop that way
hahah, that is awesome
[03:23:59] <skunkworks> http://www.cnczone.com/forums/showthread.php?t=75097
ahahaha holy crap
you have gonads, my friend
clamped very tight
and I stood off to the side when I started it the first time
its aluminum, not steel, so the off-center weight isn't too terrible
jmk might be worth it to clamp the jig to some blocks on the bed (your monstrous "steady" for example) and then use a boring bar supported on centers
boring head style?
like a jig borer
it's murder trying to hit a diameter with a boring head
the "piece" is actually 4 pieces stacked
um, line boring i mean
the first 2 are 1/2", they get bored to 1" - a tiny bit and get bronze bushings
the other two are 1/2" and 3/4", and are bored to 3/4"
then 3/4" rods go thru all to make a slide
[03:45:47] <fenn> http://www.drilltex.com/retro/Line%20Boring%20Process.jpg
so the 1" hole needs to be a press fit on the bushings, and the 3/4" hole needs to be a very nice slip fit on the rods
yeah, that is a between centers boring bar I think
i guess that picture doesn't make much sense either
only problem - doing a 3/4" hole
and you can only adjust by stopping and moving the tool in the bar
you can use a screw to adjust the depth
I want to make such a boring bar one of these days
but it would take more time to do that than it will to make these parts
first one just got done with the rough boring - now I get to try to hit the right size
anybody use a tool setter for their lathe?
how do they work??
are you asking for a qualitative response, or an instructive response
sounds like a good idea, but don't you have to set to the tool radius
like a "for dummies"
you have to know the tool radius provided you even care about it
they work pretty good until you crash the machine
then things may shift a little bit
are they stationary bolted on the frame?
or is it something you chuck in the spindle
they're usually on an arm
that drops down
mounted to the headstock
just a touch probe then
sort of like a home switch for the tool?
kind of, except it's multidirectional
like a reischleg
or however you spell it
like a what
yes, like a renishaw probe with a square head instead of a sphere.
so you can set z and x using the same tool setter
i don't use them, personally
i was not impressed enough with the results to rely on them
it seems like you would still have to check the work dimensions and adjust anyway
maybe good for loading up a tool magazine though
if yours is in good working order, yeah
mine doesn't exist yet
i did find a machine i might go buy in ohio
it has an 8 position tool turret
also don't know anything about the brand
that's probably a generic tool builder.
some old production turning center, 1995 vintage
its a chucker type lathe whatever that means
i take it to mean small parts
maybe 12" length max, 14" swing
and possibly a turret design that interferes with part length
but that is uncommon
it looks like it has a hydraulic ram instead of a bed
link to pictures
i just got them emailed to me
hang on i will see if i can post one
i'll throw it on my website
the support structure that holds the tool turret is just a big cylinder
muratec are good machunes
sort of sticks out of the head stock
is it a cylindrical way???
the operator stands facing the chuck
actually i guess the cnc gantry loader does that
but if you were to stand, you would stand facing the chuck
dmess: i'm not sure but the way does look like a giant cylinder sticking out
see the pic
not the best view, but it does show it
does it have an X axis
its a cylindrical way/ tubular machine
what does that mean
sure but it rides off the tube correct??
hm not sure
all i have is the pictures
i was hoping when i go to see it the function will be apparent
doesn't mean anything to me unfortunately
good work horse
max turning length 130mm
apparently used to make automotive parts at some point in its past
weighs 4500 lbs
amazing for something that turns only 130mm isn't it?
they were ususally pupose built so yo have to be carefull when purchasing
i called muratec and asked them for the manual, and they said they would send it
they said it was an older model they had and they don't service them any more
but it didn't sound like a custom build
weight soungds nice to me
it appears to have a japanese plc in there
that's the actual motion controller and spindle drives, most likely
they ARE plcs
i would have expected german?
the pics are too low resolution to get any name or serial
dmess: what's the major differences between the 0T, 6T, 18T, 21Ti, etc
siemens or heidenhein
right but we have dinky old controls where i work and only one 18M on a machine i don't use
there are 20 yrs between all those
right, but like, do you have some quick examples of features
some lathes DO valleys...
like "the 0T can barely pick its nose, the 18T has the voice of a woman laughing at you when you crash"
hm maybe i should pass then, i get that enough already
the 6t is WYSISWYG as are most 18's
[04:43:03] <dareposte> http://www.nerdulator.net/muratec/
<--- all the pics I have
nice pics, good to see it does have an x axis
which one did you see that in?
[04:44:22] <toastyde1th> http://www.nerdulator.net/muratec/100_1232.JPG
it wouldn't be much without an x axis would it
there are lathes that have no x axis, only Z
the tools are set to a specific diameter and never change.
they're very rare nowdays with CNC
no there arent they are called drills
also on the control, http://www.nerdulator.net/muratec/100_1234.JPG
that controller scares me a little
there's an x/z/c knob
i didn't look at the picture very long
what's the c for?
nah don't get freaked out, you'll very quickly come to love the layout
c, if it exists on the machine, is the spindle orientation
control is cool... machine is odd if you arent from a PRODUCTION world...
turns the head into a rotary table if you have live tools, et cetera
it has a turret..
so in that first picture, is the x-axis the black plate there?
yeah, that's the cover.
there was a live tooling option for it, but this one doesn't have it
i wish we had at least one live tool lathe
management doesn't believe it's worth it, they haven't bought a new machine in uh, nearing ten years
i think its just a retrofit
but you would need the Y axis trust me
y axis would be nice, then we could barfeed and mill some of our smaller parts
the guy said this one came with a part of a gantry loader?
yup.. ive done that
which part of the gantry loader?
apart of??? WTF
usually you need the whole loader to be useful.
i'm not sure
i dont' think he really knew either
i was hoping that the big empty area over the spindle would have a pick and load type thing up there
if the interface is there that could be cool though
its too tall for where the chuck and headstock is
and i'm not sure why
the chuck appears to be at waist level
does it have a sliding door over the top??? i cant tell
yeah it looks like it might have one
i'm assuming the controller screen is at eye level for a normal sized person
may have been part of a cell
yeah it probably was
almost certainly part of a production cell
it has TR2-CUT painted on it
so i'm guessing it's the 2nd station in a cutting line
not usually.. without some platforms.. some are still made for giants
i really really really need to fit it in my residential garage
been there.. done that... ( basement in my case)
i hope it was drive-up
with fork truck access
step one: cut hole in roof, and all floors in between
step two: rent crane
step three: simply drop in place and bam, you're done!
dont know who's helping to get it out but my 2 son's have helped haul it down so they dont wanna help haul it up
in pieces i guess?
it was only an 800 lbs hardinge
little different than lugging a whole turning center into the basement
made the 2 boys work for a few hrs
you ever seen a hardinge lathe??
built like a little BRICK shithouse.. and then some
nope just pictures
[04:58:57] <dareposte> http://www.nerdulator.net/muratec/100_1236.JPG
is that a chip conveyor??
i wonder if this thing would hold tolerance still
it looks like one of the machines out in our powertrain building
and they ride those things hard
in fact the more i look at it, the more i'm going to have to go look and see if there's a big gaping hole where it came grom
it has the model code of a car we just discontinued from our lines... i scrapped out a bunch of weld equipment a few months ago
wonder if they did the same
or it could be coincidence
and there are absolutely japanese letters on the safety labels
[05:04:07] <dareposte> http://www.nerdulator.net/muratec/100_1235.JPG
right by the picture of the little stick figure getting stabbed by something
you peenut your going to buy your own crap... LOL ;)
how much would a fanuc 18t cost to buy
more than $5k?
i'm in an entirely different shop, but even the paint code matches our spec (or looks like it would without all the grime on it)
if it was from my plant, then at least i know I could get a service manual :)
maybe find someone who knows how to run it
parts on ebay would cover that easily.... but part it out and time
i got my hardinge from work.. but they had no idea what they had even though they had it 20 yrs already
yup... go for broke
its got my name on it for $3800 if I like it at inspection
i figured if nothing else i could get the servos and the fanuc controls off it
now i'm worried it will be too big to fit in my garage though
for that $$ do it... i can help ya run it over the phone
as i can most fanuc's
the top door definitely slides, you can see it here: http://www.nerdulator.net/muratec/100_1230.JPG
fit it in the hole and find some paying work...
maybe i could strip all that wasted space above it off to make it fit
that whole enclosure above must have been for the gantry loader
or the portion of it that it has leftg
IS IT still there
not clear at this time
if it is, it doesn't look like there is an axis controller for it
just the two fanuc servo drives in the cabinet that I see
when are you inspecting this machine
[05:17:10] <dareposte> http://www.nerdulator.net/muratec/100_1237.JPG
i'm inspecting it tuesday
with a trailer
that picture shows a lot of drives there
some with multiple multiple encoder cables
some of the other drives could be seudo drives...
what's that mean
i figure a plc, a motion controller, maybe a couple servo drives
servo amps i mean
plc drives etc
sounds like i could probably break even parting it out anyway
we had 3 axis machines with 7axes as far as we were concerned
how do you mean
virtual axes... for lack of a better term
what use does that have
PLC is a bit of a GOD
doors, t/c, part loader, they are all contollled axes
oh so for interlocks?
and part loading
all the stuff I work with at work has 9 axes
but no machining, only welding
"precision" is 0.3mm
the plc is also a god there
dream it.. the siemens 840d will let me monitor and control it
i wish we got to have siemens
what you work with
typically 6 joint axes, two weld axes, and often a traversing base
teach-repeat type stuff though, not much to think about
occasionally a yokogawa or ab
i hated the welding robot.... but i love to weld
dang even the tower light on this thing looks like our spec, and the maintenance guys stripped it of bulbs too just like ours would have
personally.... stick..mig.. tig.. in that order of preferance and competancy
stick is my favorite too
except i don't like cleaning off the slag
a litle time for perfection... i won't comprimise
not much is stick welded these days
MIG when setup properly... runs sweet too
All our fittin is still stick
we have robot mig welders that put out barrels a day
no robot stick welders though
too hard to program
i had manual mig welders that put out TONS of wire a day on 1 job
sounds like it
laddles... rollers...runout tables.. the whole deal.. machine and assemble
i need a good welder... i have always had a really cheap one
what were you assembling?
i thought mills just rolled and supplied, maybe DOM and welded tubing?
obviuosly i've never been to one though
iron IN formed 36" x 18" I-beam out
with a laser to cut it to length as it rolls out?
always wondered how they do that
man i thought I could just bring a trailer with me, but its hard to find a trailer that is rated for that much weight
[05:59:30] <dareposte> http://www.hgrindustrialsurplus.com/sub/product_detail.aspx?id=21-359-013
call riggers that know HOW to do it...
or my 2 sons
oh, you're a good person to ask this dmess
how much money would it take to have riggers transport a 12k-15k lb machine
how far??? under water??
over a road, say 500 miles
union or non union
uh, i have no idea
if i called a rigger up and ask for a quote
what do you think a reasonable range of numbers would be
it may cost you about 1000-1500 if you work it right,,, im NON union
that's not too bad
i think you would be lucky to get it for 1000, but work is slow for them right now
not to avoid alot of aggravation
i'd pay 1500-2000 without too much problem considering how much the machines cost
back hauling.... is what your looking for... going home empty
i'd rather not have someone turn a turning center into a vertical boring mill as they unload it
riggers usually know better than that
they've seen enough heavy stuff in their day
although if you get a rigger who usually moves trailer homes or something
no, i'd contact someone who has moved machines before and wouldn't damage it.
not been a problem to me in the past
i was just expecting like, 5000-7000 to move a machine i might buy for 10k
so the lower number is nice.
a hypothetical machine, that is.
3000 installed and powered up is a good guestimatte
i can ask one tomorrow for you if you want a number
nope, i've just never seen the costs for rigging
i don't have any machine to move, nor will i in the near future (but thanks)
its all part of the deal.. you take on.. when you say GO
toastyde1th is now known as toastydeath
fenn_ is now known as fenn
which ball bearings would be better for a desktop size cnc router (400x600mm): 5x10x5 or 8x22x7 ?
I can wholesale packs of 100 of those for a good price
what size screws u using?
that's a 608ZZ right?
dareposte: first version will be with threaded rod, probably 5mm
dareposte: was this what you asked for?
i agree with fenn, the bigger bearings are usually better. But for 5mm rod an 8mm id bearing would be a bit inconvenient
are you in the us?
I also want to use the same bearings for the Linear motion of the axes
like this: http://www.probotix.com/solsylva/build1/pages/pbx_32-021.htm
dareposte: nope, europe
dareposte: but I intend to order most everything from the US
[15:45:39] <dareposte> http://www.use-enco.com/CGI/INSRIT?PMAKA=890-9839&PMPXNO=5283713&PARTPG=INLMK32
US is a cheap place to buy, even if you account for postage
i'd recommend an acme rod like that over allthread, as cheap as they are
in that case use the 608 bearings
whenever I read acme, I keep thinking: roger rabbit.. must be me :D
you'll get over it
* dpy checking it out
i thought of wiley coyote forever
the strength and efficiency of a trapezoidal thread profile are somewhat better, but I think the accuracy is similar
as compared to a piece of threaded rod
that isn't metric :(
I don't know if I can make that thread in nuts I want to make from delrin
is that a big deal?
I have a metric threading set
to thread delrin, just cut about 3" off the end of that rod and grind some grooves in it, then harden it
use it as a tap to cut its own threads
i guess for delrin you wouldn't even need to do that though
you could just use it in an unhardened state
delrin is quite tough
but I could try that
or dumpstercnc makes some anti-backlash delrin nuts that are allegedly pretty good
[15:51:55] <dareposte> http://www.dumpstercnc.com/
costs a bit more though, $15/piece if I remember
but they are delrin, anti-backlash, and have a nice mounting flange
ideal for a small desktop type router
but we're getting a bit off topic, sorry to divert you
i'd say go with the 608 bearings
make a sleeve for your 5mm threaded rod to bring it up to 8mm OD, to fit the 608's
also, that acme rod is 6ft right?
that is what? 1.8m ?
I don't see how this is going to be sent to europe, if at all.. or the costs are going to be huge
its not so bad, but i live in the states
they just put it in a carboard tube and ship it
costs about the same here as a regular package
"Smaller parcels will ship via UPS air freight [...]" grrr, UPS, that's one expensive company
call them up, they'll ship it however you want
k, maybe I will.. I could go with the threaded rod first...
USPS is the best
for small parcels it is way cheaper
usps here usually costs more, takes longer, and won't let you track it
and delivery within a week to the netherlands
the only reason I use them for packages at all is the occasional flat-rate box
well, UPS and FedEx start at 25-30 USD for any parcel overseas
USPS starts at what? 6 or 7 USD
sounds like you get better rates than I do with usps :)
UPS rates have gone up for domestic, now it usually costs $13-$15 per parcel to ship something of a normal size
good luck with your build
also 608 bearings are more common and used in a lot of DIY projects
you can't make anti-backlash nuts with a tap you cut from threaded acme rod
just get local M8 rod
tnx for the tip
learned that one the hard way
theres some awfully interesting stuff recently in the emc-devel mail list, about embedded emc controllers.
unfortunately, the "interesting" stuff all seems to be about making a faster step generator
SWPadnos: and not even that much faster :/
today i got 5 axis tuned and running sweet. the yaskawas have thier gains max'ed out. sounds like r3d2 :) when running 5 axis helix ( XYZWC), C is moving normal to circle, Z is Vert of Helix, and for the hell of it W is programmed opposed to Z making it back into 2D flat circle (he he he)
the last messages were about 50kHz? wtf?
alex_joni, I noticed that
which you can easily do with a <$100 Goal3 board, or the Atom jmk used on his robot
what linux tool chain can be use to reduce big (164meg) mp4's?
I need to send vid reports over internet an servers are telling me to go away, too big.
yeh but what tools, mencoder didnt reduce the size but 20%
sorry, divx is a codec yes?
I think divx is a program and a codec
thx SWPanos, will look
Well, technically DIVX is a tool
but lets not dgo there
He should just use handbrake, it's the simplest... http://handbrake.fr/?article=download
Mind you, transcoding is time consuming.
Movie DVD to 700MB AVI (XVID+MP3) takes about 4 hours.
H.264 will take longer
depends on the BogoMIPS, but yeah ;)
Not really all that much.
dareposte: I see your video. looks like you are getting good threads now. I'm glad you found the problem.
we're hopefully going to run our steppers with emc2 today
on the engraver
so when you're setting up a coordinate system for emc2 and a machine, where does one usually put the origin?
i notice when i open most of the example files, the are centered on 0,0,0
so if I have a 24" x, do I go MIN_LIMIT=-16, MAX_LIMIT=16?
on a mill, wherever you want is ok. on a lathe X0 has to put your reference tool at the spindle centerline
this is a laser engraver, so it's more like a plotter
what's the normal place for the origin on a mill?
there is no standard
it's probably most common to make it either the center of movement or the lower left corner
interesting choice of words
which ones? :)
lower left corner
after I leveled my mill, there were no low corners
this thing has "home" sensors for the upper right corner
it makes no difference where the home switches are, you can define that point as something other than 0
yep, i was just looking at the ini
emc2 seems awfully cool
i'm using one of those intel atom mini-itx boards for this project
and the emc2 livecd
overall it has been seamless so far
i'm going to have to make a custom hal module to control the laser on/off
Optic: in 2.3.0 you'll have better support for laser on/off using motion synched M-codes
M62..65 iirc the names :)
but it's still a couple weeks away
alex: I was going to make it turn the laser on if z < 0 and off if z >= 0
which should give realtime control
Optic: M3/M5 should give realtime control too
just use motion.spindle-on as the laser on
the problem with that - if I understand it right - is motion stops when m3/m5 is called.
it depends how often Optic needs to turn laser on/off
profile cutting is probably ok - but engraving is not.
i'm doing engraving, possibly in a raster mode
for raster either use the Z-axis hack
or wait for M64/65 in 2.3.0
the Z-axis hack doesn't require any new HAL components, just use a comparator
i'm still trying to get my head around the HAL
Hi steve, alex
I just had to put another video card in this thing, fan died and nviddia did what they do best lately, toes up.
did you get a fanless replacement?
vesa driver seems to drive it just fiine.
No fan on this multiyear old relic!
but, how ddo I check if I'm using the right parport, everythng looks good, but the only place the machine moves is on screen.
err. lspci, then try the different addresses until things work?
what file contaains that port address assignment?
by default, you don't need to specify a port
if you don't, then hal_parport looks at 378, 278, and 3bc I believe
it would be in the ini file - add a config parameter to the loadrt line
hal file, not ini
Maybe so, but these new ports, which I haven't tested yet, show uo at addresses starting at 0c99 & go on up, 6 addresses total.
I was going to say
you can use any address though, so don't worry about it
emc hunts and finds it or ??
no, you figure out which address is correct and use that
and that is set in which file?
lspci will tell you what ports are in the machine
I wonder if you're meaning the question you're asking
you set the address in the hal file
if you want to find the correct address, you need to use other tools, such as lspci
parport output is looking good on the 'scope!
In what file, do we set this port address?, yes, and lspci -vv says there 6 addresses for it.
YOU TELL HAL_PARPORT THE ADDRESS IN YOUR HAL FILE!!!! :)
(does that make sense? :) )
gene: what configuration do you use?
ok, then in the HAL file
4 axis xylotex
alex_joni, I don't think the released stepgen lets you specify the port
SWPadnos: read my mind ;)
read it right but wrote it wrong :)
chuckle, somehow it forgot the default config, when I looked in the one I was running, sim_oinout.hal stuck out like a sore thumb, duhhhh
weell.. sim_pinout means it probably is doing the right thing by not moving :P
In other words, load the right config & it works.\
I gottra run, the weather is closingg in and gonna get wet and I have stuff to put away first.
this is so embarrassing, gene has a CNC machine and I don't
it's not truly embarrassing until I complete my retrofit(s), and you still don't have a machine
oh come on.. even I have one :P
you've been at it longer than i have
me or SWPadnos ?
err.. not so sure ;)
but anyways, you'll build that oligopod one day :D
tripod thingies don't count
SWPadnos: I have a sherline sized machine :P
oh, well in that case
[20:59:44] <alex_joni> http://juve.ro/blog/projects/01157974398
does it have a spindle?
fenn: it does in the mean time
not sure if I have a pic online
but it's not strong enough for anything above palstic/soft alu
maybe with teeny tiny bits
Hey, I'm the one with the longest non functional machine, so fenn you have nothing to worry about.
[21:13:16] <Optic> http://www.capybara.org/~andrew/temp/laser/
some pics of our progress :)
the space is hacklab toronto
Optic: i'm setting up a similar space and i'm curious where your funding comes from
ideally all expenses will be covered by membership dues
right now it doesn't quite make up the rent, the founders of the space are paying the overage
btw you shouldnt eat laser etched food, supposedly it contains bad things (worse than just burned food)
we need about 10-15 more members at $50/mo to make it break even
we're not going to eat laser etched food. :)
how much is rent? is it just an apartment somewhere/
it's a commerical apartment above a bar
about $1200/mo I think
who bought the laser?
it was bought off craigslist for $500
but the laser works and all the motors work
haha "I normally teach recursion by checking to see whether they understand recursion, and if not, teaching recursion"
the controller was missing, the previous owner sent it for repair and it "couldn't be fixed"
so he sold the rest of the machine for cheap
that's a pretty awesome score
oh, is THAT wahy you didn't just repair it - you didn't have it =)
apparently we can get it back if we do a lot of chasing
Optic: I'd try to get it back if I were you
you don't think we'll be happy running it off emc2?
If nothing else for trying to replicate it
we've built power drivers and a controller for the motors, and we have a pwm controller for the laser working
Well, here's the thing... ULS does a good job. Their printer driver plus that board does a hell of a job.
we're not going to do anything that would prevent going back to the stock controller
There's the whole PPI and power control etc, if you can use it as a refernce to duplicate, you might have something really good there.
Does your machine have auto or manual focus?
well, I think there is a member working on getting the old controller back
it's manual focus
was there an option for auto focus?
not that i'm aware of
this is a 17 year old unit
Is Z manual ?
the z was controlled by buttons on the control panel
Ok, so you COULD actually incorporate auto-focus into it, that would be very cool.
Does this machine allow pass thru for long stock?
i guess we could... we just need something that can measure distance from the lens to the work?
no, there's no pass thru
Optic: Well, they have auto-focus on all their newer machines, maybe you could steal the idea of how they do it today
does it have air-assist?
the original controller didn't do raster either
Well, not needed for engraving as much for cutting. IIRC.
I think it was purely a plotter-mode thing
Eh, well, imnsho one shouldn't use a laser for primarily raster
no, but that's popular these days
all the youtube videos i've seen of Epilog units show it in a raster mode
it's like a glorified inkjet
Yeah and a 5x7 will take 60 minutes too
err make that 4x6
i think we'll be able to get some cool results with emc2
and that's with a 60W, not a 25W like you have.
Raster is cool and all, but SO much more can be done with vector but most don't know wth vector even is.
we had one member say "emc2 is a steaming pile, you should buy mach3"
but I don't believe him :)
this is a good project to learn about machine control
Optic: maybe even a good way to learn about emc2
the "raster" done by emc2 could be improved
yes, i didn't even know about it last week
I spent about two years learning/wanting a laser, and jsut too po, so got into router as a cheaper alternate. I did a lot of homework
But I'd do about what you did too =)
there's a lot of infrastructure with this thing, which makes the hackerspace a cool place to do it
we have one guy who's been doing all the ventilation
and another guy soldering the control boards
good night all
hey this message is for Fenn and Eric
Well the installation of the new parport did not go well !
I wan't able to install it. I used the recommensed instructions but it didn't work.
So now I have two parports that don't work.
you mean you get no response from the parport at all?
the instructions seem to have a few problems if you don't have the exact parport
Yes. To make matters worse I found a new computer but that has video issues.
Is there a specific way Linux wants a parpot installed. The instruction I had installed it a memory location a400.
it will install itself, that's a bios issue
you then have to figure out where the bios put it
linux can't control that
The bios only has one parport showing. Does this mean the bios doesn't support it ?
use lspci to find it
the BIOS probaby only deals with a parport that is on the motherboard
if you add another parport (on a PCI card or whatever) the BIOS won't neccessarily know about it
bios setup programs are always rudamentary
I ran that and it did show it. Where is the address shown.
issue lspci -v and post the results to pastebin.ca
OK, past bin would be where?
on the interwebs
I was gonna say that eventually
I thought it was "intarwebs" btw
Great. It will take a few minutes I have pieces scatter about my house and garage.
it is always best to have your EMC computer networked
and to use IRC from that computer - makes pasting stuff much easier
OK its done.
Now about the networing comments. Its more important to get the cnc router going than adding networing to my garage.
eric do you see the netmos com controller