theorb is now known as theorbtwo
Anyone here familiar with old-fashioned cutting lasers?
I happen to be an expert on 19th century lasers
Lasers are old fashioned?
Oh yeah, I always see the old B&W of the laser sitting next to the wood burning stoves
spasticteapot: Did you have a question?
Then just ask
I've found some great big lasers on laserresale.com and was wondering exactly what would be involved in setting one up.
Currently trying to find the blasted thing. :(
[05:17:47] <spasticteapot> http://www.laserresale.com/?fa=app.view&it=5404
The price is right, but it's, well...a huge old monstrosity.
Jymmm: So...what *is* this thing?
we have an old CO2 laser at work that is physically very similar
spasticteapot: you need a supply of CO2.
elmo42: Does it need to be a mix specific to this laser, or just plain CO2?
Also, do you know what sort of maintenance or service must be performed on a lump like this?
ours uses some odd mix, not just co2
And do you have any thoughts on using mirrors to build a "flying head" laser setup?
atmega: Is this the sort of thing you can buy off the shelf, or is it loopy expensive and only sold by the manufacturer?
it comes from our regular gas supplier
no idea on cost/ease of use/etc
we weld zircalloy and inconel with it
All I know about inconel is that it's a bugger to work with and worth more than I am.
Do you know if this sort of laser is generally able to be throttled down to 1/2 power output?
says it pulses
elmo42: Do you think that can be turned off?
I suppose I should just call the vendor....
power is controlled by shutter-open time
what I mean is it can be pulsed.
it does constant ON, but it can also pulse
we used to have some 2500w YAG lasers, they were incredibly expensive water heaters
Anywho, does anyone have any thoughts on using mirrors and moving optics?
In theory, it allows you to have a much faster cutting speed on the laser, but I'm not sure if you can really do it with a 750W laser.
OTOH, were it possible to do so, it would drop the cutting time for MDF down to nothing. :)
you worried all that much about cutting time?
unless the machine is run 24/7 cutting time is almost irrelevant
root is now known as Guest72914
Guest72914 is now known as minorursa
"can not mount /dev/loop0 " etc. Any suggestions, anyone?
Anyone home, or is everbody lurking?
please more details
what is mounted? how? who?
downloaded latest release, burned ISO, boot goes through some grinding, and then
the message Can not mount /dev/loop0 (/cdrom/casper/filesystem-squashfs) on //filesystem squashfs
google can not mount /dev/loop0
pretty much. There's a message about ash running.
look into dmesg
maybe corrupted CD?
try check cd from boot menu first
bottom of the dmesg file: "Major/minor mismatch, older Squashfs 3.1 filesystems are not supported
Huh? This is supposed to be running from a live CD.
Suspect a bad CD?
Done. I'll try again tomorrow (local time is 4 am).
btw what iso version?
downloaded earlier this evening
there is (must be) 'check cd' entry in boot menu
so try it
hang on, and I'll see if I can get to it.
at least for me this image is working
also it's useful to check md5 of downloaded iso image
cd being checked now
check ended with same message--can not mount . . .
so it's corrupted
Looking a ls shows the file in question (filesystem.squashfs) has over 700 meg. Huh? Must be corrupt.
We try again tomorrow.
no, it's ok
try md5sum filesystem.squash
i'll check mine
Much thanks. I'll work on it tomorrow.
Thanks for the ear, and the suggestions.
jepler: Are you available?
If there is one, then a torrent will have the nice effect of re-downloading only the corrupted bits.
I there anyone available that has pluto-step experience?
boot|sleep is now known as bootnecklad
cradek_: Now, if they only had a wired version, this might be slick for use with Touchy http://www.apple.com/magictrackpad/
Jymmm: just a bit cheaper then touchscreen :)
a lot cheaper
70$? acoustic ts for 17" are sold for ~90$ here
[11:23:11] <psha> http://www.touchbaza.ru/catalog/sensors_screens/saw/147
1$ ~ 28 rubles
that's an overlay
it's also 4:3 ratio, meaning CRT, not LCD.
it's mountable on nearly every 17" tft screen
17" 4:3 tft's are still popular
Maybe in Russia
dunno how it's across the border :)
payment terminals are very popular here in last years so ts displays are pretty cheap
Wide Screen 16:9 or 16:10 Ratio
Even on netbooks
I switched to 16:10 monitor last year too
but 4:3 are sold starting at ~100$
also u may buy used one very cheap
old TN matrices were not too nice so people sell their old ones
Yeah, CRT's are just not worth it these days. I have a 23" Samsung that does 2048 natively, which means I have full two-page layout! I just love that, too bad they discontinued it.
and cheap too
Heh, large CRT's were large
I still have a 24" Sony Trinitron @ 68lbs. It just sits around as a backup.
Those things just never die!
:) Already have a backup tft :)
17" 4:3 :-P
I checked prices for TS since there is posibility that I'd have to build setup with it
And magicktrackpad has one small disadvantage
I expect that it behaves like 'relative' input device, not 'absolute'
So it's like any other mouse
btw have you considered trackballs?
Thay are popular among medical equipment
That's all I use. Kensington 4 button TrackBalls
[11:40:41] <Jymmm> http://us.kensington.com/html/2200.html
cue ball sized
How it's compared to mouse? Comfortable?
BL: Left Click, BR: Right Click, TL: Copy, TR: Paste, Chord Top: Cut, Chord Bottom: Browser Back
I've used this and the previous generation trackball for over 7 years. I don't have any wrist fatigue, when I use a regular mouse (like if I'm working on someone else computer, I can feel the strain after a couple of hours.
maybe more like nine years.
Long enough to be confident in trackballs :)
I've never used them :)
and to request one when starting a new job too.
jthornton is now known as JT-Mississippi
I'm at Biloxi, MS
JT-Mississippi: whatcha doin there?
down on the beach
drinking coffee and watching the shrimp boats come in
doesn't archivist cut gears with EMC? http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/id,4488/catid,30/
I think so
that's what I thought too
here it is http://www.youtube.com/user/davethearchivist#p/a/u/1/HAtziCsUj5Q
is there a way to get more vertical divisions (squares) in hal scope?
The current default is 10X10...
hello I must to configure joypad for emc 2.4 this are the options that I see throght halmeter http://pastebin.com/ZiBEkvJL
and my configure minimal are this http://pastebin.com/pEDbkvye
My problem is that the my joypad is very limited http://imagebin.org/116668
and the option input.0.abs-rz-position not is present to in halmeter,
for this I'm not possible connect and movie the axis Z.
Is possible that I can connect the axis Z througth a generical button and the axis X or Y for movie the axis Z.
you should be able to use any button for anything
I don't know as do this operation
once you have your joypad connected and EMC sees it then you can use Machine/Show Hal Configuration to view the pins
the pins of my joypad return from halmeter http://pastebin.com/ZiBEkvJL
you can add a pin to the watch window to see it's operation as you press/move it
could you please to do example
this is how I hooked up my joypad for my plasma http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Simple_Remote_Pendant
I saw this wiki yesterday
but the problem is that the pin not are equals
you have to adapt
this is a very short understanding of HAL commands http://www.linuxcnc.org/docview/html//hal_basic_hal.html
for example I have the buttom 1, free , how can I connect this buttom together axis X for moving the axis Z ?
Does anyone have any tricks to finding the center of a circle drawn on a flat plate?
you would have to use some HAL logic componets
Jymmm: I use to know but forgot
Hello could someone please take a look at the following EMC forum post as I am currently pulling my hair out :-( http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/catid,38/id,4483/lang,english/#4493
JT-Mississippi: let me know if you remember please
salvarane: scroll down on this page for a list of all componets http://www.linuxcnc.org/docview/html/
thanks I look at
JT-Mississippi: Heh, I just found that too =)
dang I missed the change to do "let me google it for you"
JT-Mississippi: This is slick... http://www.mathopenref.com/thalestheorem.html
pretty neat Jymmm
JT-Mississippi: It's always nice to know WHY shit works =)
yea, I'm the same way
I wish I knew why pluto-step does not ;-)
I think the pluto guy monitors the mailing list, not sure if he visits the forum
Is that Jepler?
I do recall something about a math problem with a pluto driver...
jon something I think
JT-Mississippi: did you look at the scope image I posted?
sorry but this informations is too , and the example is not exhaustive, this is the general information, not specific about this argoment joypad and all possibilities
Weird huh.. when the Y neg is commanded it feeds back to the Z axis!
The problem I not sure is weather it is EMC or the Pluto firmware?
it is weird I would post this question on the mailing list
salvarane: you won't find anything that lists all possibilities for a joypad
[13:51:57] <cpresser> https://lists.sourceforge.net/lists/listinfo/emc-users
the component of the emc are too, and they uses are not clear for me whit this documentation , exist a document that explain with examples the uses of this component and the field of the applications
salvarane: did you take a look at the integrators_manual?
salvarane: the place to start if you know nothing about HAL is here http://www.linuxcnc.org/docview/html//hal_basic_hal.html
it explains the basics and gives some examples
ok thanks in the section 5 of the integrators manual there is something, I look at
one trick I use is to write the logic down in English (or your favorite language) of each thing I want to do in HAL
for example "if button 1 is on and switch 2 is on turn output 3 on"
then find the proper HAL command to replace each logic part and do one at a time till you get to know the commands
then test each line as you add them...
JT-Mississippi: I have just posted a message to the mailing list... but how do I view it?
you will get a copy if you subscribed to it
the method be like the pointers of the language C
a component point another component and so forth
I have subscribed and have sent a message but have not received a reply as yet does it take a while, also did I need to check 'Would you like to receive list mail batched in a daily digest?' to receive them?
Or is it I only see replies when someone else makes one?
<JT-Mississippi> thanks for your patiece, I must study this manual.
no problem salvarane
Paragon39: you should see your own message on the list
as well as any answers
Paragon39: I use individual e-mails it seemed simpler to me
I ee your list :)
"I see your mail" dammit. i am to dumb to type :D
I cant find it... lol
you can use your mail-clients thread-view. it gets you a better overview on the list
I am using googlemail but cant find the post!
[14:45:19] <JT-Mississippi> http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/catid,10/id,4454/lang,english/#4492
anyone notice this on your install
he probably has GEOMETRY in his config
or something like that, it's surely not 10.04 related, he should post his ini
Am I right in understanding the following... 'Xpos-cmd axis.0.motor-pos-cmd => pluto-step.stepgen.0.position-cmd' states axis.0.motor-pos-cmd passes info to Xpos-cmd then Xpos-cmd passes it onto the pluto-step.stepgen.0.position-cmd?
JT-Mississippi_ is now known as JT-Mississippi
Hi, How does one get rtapi_print_msg to print to standard out ?
or rarther were does the output for rtapi_print_msg(RTAPI_MSG_INFO, go
"master" process i think
whic starts all stuff
at least it behaves like this )
psha: do you know how do I see the message is it in a log file?
replace INFO with ERR and you'll see in on console :D
i don't know where INFO messages goes, used ERR for debugging :)
I tried that but it also scrolls over the AXIS gui
Endeavour_ is now known as Endeavour
Tech_Talk is now known as Birdman3131
root is now known as Guest71291
Guest71291 is now known as minorursa
looking for help with problem installing 10.04
anybody care to try?
OK, I'll return later.
Anyone home who would like to tackle an install problem?
what actually happened?
I burned a CD, and the system cannot mount the squashfs filesystem. It turns out that it has mounted one of the partitions on my disk
as cdrom, and then tries to mount an old version of the file on loop0.
I can provide the various messages if this is not clear.
well, I'm not sure what's going on there
could be a bad CD burn, but it could be something else entirely
minorursa: have you checked md5 sums?
I find that /cdrom is mounted on a partition of my hardrive that has an old ISO, and the system is trying to mount on an older version of the squashfs system.
Yes, md5 is fine.
SWPadnos: What other info do you need?
minorursa: please a bit more about partions & old iso
it's written there directly?
drive has 4 partitions, listed by df as sda1-4. /cdrom is mounted on sda4. iso is the iso from which I installed Heron.
maybe rename/move 'older version of the squashfs system' to see if correct one will load?
Or if it has iso filesystem just temporary kill superblock
I'm waiting for boot now so I can rename the file. How to I kill superblock?
What is filesystem on that partition?
If it's possible to mount it in read-write mode then just rename casper subdir
I have renamed the file and am waiting for reboot from CD
if that doesn't work, I will rename the directory (casper).
It doesn't work. This time, the system attempted to mount the file with the changed name. Grump.
try to rename casper subdir
and set 000 permissions for sure )
boot with renamed directory is now in progress
seems to be working
reading the heck off the CD, and taking its sweet time. It's an old machine (750 MHz).
Well, it works, sorta. I have started, and killed EMC. Clicking on the latency test menu item does nothing, however.
run it from a terminal and see why it doesn't run
It might be worth a note somewhere that any old directories named casper should be renamed before attempting boot from the CD.
yeah, that is strange that it tried to read stuff off the hard drive
but I guess it makes sense - that could have been a USB flash drive with your personal data on it
What (and where) is the latency test program, please?
from console or Alt-F2
terminal, not ALT-F2
that way you get to see any error messages
There is checkbox 'run in terminal' in alt-f2 :-P
found it in /usr/bin. Pile of messages on termal
first message is from insmod, operation not permitted.
Second with same problem :)
what's the kernel version
2.6.32-122 i think
RTAPI could not open shared memory. Kernel is whatever is on the live CD.
not what it's supposed to be, what it is ;)
ok, lsmod | grep rtai
it's not there. The message said that loading the module failed.
yep. try it anyway
"Operation not permitted."
lsmod is not permitted?
No, loading the module, specifically rtai_hal.ko
dmesg | tail
one possible reason for not being able to load a module is if it's already loaded. that's what I'm trying to get you to find out, usinf "lsmod | grep rtai"
lsmod says it is not there. dmesg says local apic configured but not available.
insmod on other modules in the directory gets the same "operation not permitted."
ah. go into BIOS setup and make sure that APIC (or local APIC, or HPET ...) is/are enabled
I'm pretty sure that there is no option for that, but I could easily be wrong. I'll check now.
(SWPadnos, if its any use, i running EMC2 right now and 'lsmod | grep rtai' just returns the prompt)
yep sim 5axis
heh. that's not what I meant, but still
I'm pretty sure there should be some modules named *rtai* if you're running RT, but that could have changed
confirmed, there is nothing in the bios setup about APIC.
rebooting CD now. I'll check if any rtai modules have been loaded as soon as I have a terminal.
if EMC ran, then modules should have been able to load
(SWPadnos, very very odd, my scroll back shows it didnt exist, yet now it does)
didn't get past the select config screen
it is possible that the RTAI kernel on the 10.04 CD can't support certain older motherboards, since I get the feeling that local APIC is required
but I've been a bit out of touch lately, so I could be all wrong
and this is an old machine, with an old motherboard.
minorursa: look in irc logs
you are second this week with same problem
anyone remember the solution?
Just this once .. here's the log: http://www.linuxcnc.org/irc/irc.freenode.net:6667/emc/2010-10-02.txt
minorursa: nothing good )
search for lapic
[19:27:38] <tom3p> http://pastebin.com/KjCsT39L
minorursa: afaik you need to compile a new rtai kernel with a disabled lapic support
I think I may just stay with 2.3, since it is giving me pretty much what I want, but it would be nice to upgrade. The nuisance of making a new kernel is
a bit much, especially because I have a packed weekend as it is. Thanks for help.
Checked the log, and there is no solution given there. Just a note that it looks bad.
For future reference, where is the source for an emc-patched kernel?
If the kernel is patched, that is.
you could try 8.04
8.04 is running fine. I was interested in upgrading without net connection, so I got the CD. I know that I can do an upgrade of 8.04 if I connect to the net.
f6 at boottime offers a "noapic" option and a "no loapic" option. How do I activate these?
got it. No need to answer last question
Thanks for the help, folks. I'll do some tinkering, but am not hopeful. Unfortunate.
for all who tried to help me with 10.04, here is the solution: add lapic to the boot line. Picked that up off http://email@example.com/msg22482.html
elmo42: Do you have any experience cutting MDF or plywood with lasers?
From what I understand, the more power you use, the faster you can cut, and the the neater the end results are.
SteveStallings is now known as steves_logging