theorb is now known as theorbtwo
Hello All, How does commutation generally take place with dc brushless servos that have three leads for phase A B and C?
some kind of absolute mode position feedback to the amp
often, hall sensors or similar
Thanks Cradeck... I ask because I've seen some drives that employ hall sensors and others that don't so I was wondering weather they needed different typs of motors.
Ooopps s/Cradeck/Cradek ...
Paragon39: no tab-completion? ;)
elmo40: Not that time ;-)
JT-Work_ is now known as JT-Work
Has anyone had experience with these drivers OEM670T ? Additionaly What additional hardware would I require to for use with a 7i43 card? http://www.compumotor.com/catalog/OEM670_675_498.pdf
You can think of Hall sensors as an absolute encoder with 60 degree resolution
so you can estimate the rotor position with +-30 degree tolerance. Once you get a Hall output
edge you can use the edge as a better rotor position estimate and then use the encoder count for rotor position
You would need a 7I33/7I33TA to drive the OEM670T with a 7I43
Thanks pcw_home: I was thinking of using the pwm out from the 7i43 0-5v into a say an opamp to give -10 - +10 would the encoders plug straight into the 7i43 card? What are the benifits of the -10 to +10v over step/dir
sparks improving things is rare but exciting
pcw_home: You just answered part of it ;-)
(found a shorted tantalum with a car battery)
you can pick up an existing windows machine and put it into a VM, the hard part is you need to set the IDE driver back to generic *before* you remove it
other wise its a pain in the ass
the 7I33 is basically the op amp circuit plus single of differential mode encoder buffering
You can connect single ended encoders directly to the 7I43 if you wish
Thanks pcw_home! What are the pros and cons of the analog vs step/dir for servo control?
Analog with encoder feedback exposes full control loop to EMC, so following error is available, with step+dir you are basically open loop
and tuning is split between tuning drive and tuning EMCs loop
pcw_home: Thanks again for the info! :-)
Torque mode is nice since EMC can read applied force (and even limit it if desired)
pcw_home: I went for 2 of them on ebay for $99 the pair + shipping http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=180570271892
Great deal, looks like good docs as well
pcw_home: To good to pass up ;-) Anyway I'm off to bed it's 4:30 am here! Thanks again for you help!
welcome and 'nite
I have a question about http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Axis_Embed_Video
anyone here built a cn machine from hp printer carriages? I'm working on one. pics available tomorrow.
Hi All, can anyone assist with this issue: Trying to load hostmot2: Error: RTAPI: ERROR: could not open shared memory (errno=2)
anyone in .IL
or near it
AntiLiberal> It's that old Mazak Microcenter V 5 with the Fanuc 5 or 7 control in it
<AntiLiberal> It is in Peoria, IL
guy inherited it but he's moving and my friend doesn't have anything to take 8000 lbs and he's moving out of the area also
so if anyone here would like to rescue it before it gets sold to a scrap metal dealer, message him
hmm, topic looks insteresting cause I have a canuckload of stepper motors lying around
why not use archlinux for emc2?
why would you pick archlinux?
you can build emc2 on any linux
all linuxoids say it's more stable and strict. updating is more reliable.
yep i can, but it's a long way to go to build
why not gentoo
when you start a sentence with 'all ... say' you are about to go on to say something surely false
I let that part go.
I think NTU has packages for archlinux.
he was real close at least.
i do not quarrel i'm just interesting. all who i know (not users, programmers, sysadmins, professional linux user too) say arch is best for now.
[12:25:11] <cradek> http://www.brighthub.com/computing/linux/articles/21108.aspx
we chose ubuntu because it's by far the most popular linux distribution
that makes more people familiar with it, people hear about it in the news, and so on
I think using it leads to emc being less marginal
I know many linux users (since the early 90's) and none of them use archlinux
but, that is also strictly anecdotal
cradek, i agree, linux is something very extraordinary for usual people )
yes, I have never used it, but I have used linux since 1993 - pure anecdote
between the two of us, we could have data... if the plural of anecdote was data.
maybe it's because it's russia
I saw a picture the other day that made suse look good
SuSE was very popular in germany at the start of the new millenium... but these days are gone :)
* cpresser still owns a lot of suse-merchandise
yep, but the painted suse chick was still hot.
never heard of arch linux
really? everyone says it is the best.
must not have met everyone yet
when I started using emc2 I was a big suse fan
same here. arch was new to me until i joined this channel
I did spend about 2 weeks till I could start emc2...
[root@weldww root]# cat /etc/redhat-release
Fedora Core release 1 (Yarrow)
someday, I'll upgrade.
as long as there are no real arguments for switching to $whateverdistribustion, i think its unlikely to happen :)
*buntu is awfully easy to get running with no linux experience
atmega: and that's exactly the reason why we chose it
atmega, this is true
more advanced users can take care of their install themselves
if they want whatever Pacman-based distro.. nobody is trying to stop them
luckily there's enough to chose from: http://en.wikipedia.org/wiki/List_of_Linux_distributions
best distro ever: http://hannahmontana.sourceforge.net/Site/Home.html
I'm disappointed there's no HM in the kde menu
so you wont use it, alex_joni?
[12:47:46] <atmega> http://shirt.woot.com/
cpresser: I'll reconsider it when I need to upgrade :P
Did anyone use slackware Linux back in the day. Installed from a couple of floppy disks :-)
gentoo, never slack.
settled on Debian.
I started with RH, then Suse, then debian, then ubuntu
Slackware -> RH -> ubuntu (primarily due to EMC). The EMC BDI started on RH from memory.
Paragon39: correct, then switched to debian based with RH installer
That's right... I't used to run on Solaris too if my memory serves me correctly but that was EMC1 from nist. Solaris is my strongest flavour of Unix which is the field I work in. I started out on the IBM 3270's in the mid 80's then moved into SunOS exciting times!
But saying that I do miss my Commodore Vic20 programming 6502 machine code .... lol
TI99/4a -> commodore 128 -> packard bell 386sx.
anyone here buy cnc machines in addition to making your own?
actually I think it's free, unknown shape and 8000lbs
AntiLiberal> It's that old Mazak Microcenter V 5 with the Fanuc 5 or 7 control in it
<AntiLiberal> It is in Peoria, IL
the guy that inherited it is moving out of the building
and my friend there is also moving and has no way to move such a heavy machine
dunno the condition etc I am just trying to find it a home vs scrap metal
you can but it takes some time :)
what is it?
big cnc miller
V5 is vertical mill?
has a serial interface so you can use a external driver software vs having to program it with switches etc
lemme find pick
it's a beast
[13:33:28] <flyback> http://www.germancure.com/st/metal/mill.htm
well that was the first site to have a picture
not the actual pic of the machine?
message antiliberal for more details, that's about all I know, sorry
here is how you move a 6,000 machine by hand http://s47.photobucket.com/albums/f163/johnplctech/Bridgeport%20308%20VMC/
Surely a second hand dealer would take it off his hands no?
Paragon39, I dunno
I know a guy that will take it for sure and he is in IL
do you have any contact info?
just antiliberal on irc
I can e-mail him
mesage him for contact info
he is not logged in any more it seems
no he's on irc
interesting machine layout. controls in the head ;)
I still have a set of Slackware install floppies (maybe 30 of them)
elmo40, when my friend was going to play with it before the guy decided to move
and a set of SLS disks
I don't understand
I looked it up and apprentely people wrote programs to feed it over serial port
so you dont' have to use the primitive programming on it
but that's about all I know
they PUSH the data over
he is not on this channel so where is he?
he doens't hang here
- /msg antiliberal
yes I spelled it right
ok never did that before
it is called a PM. Many people dont appreciate it unless pre-authorized ;)
I get an error
Missing required parameter message.
oh well yeah you have to say something
- /msg antiliberal hey I know someone who would take the machine
ah ok, never done it before
it's ok :)
/msg antiliberal a/s/l
I don't think he's awake yet :P
atmega: I doubt many in here use that
* flyback bites atmega for showing excecessive "canuck tendencies"
dang it is almost 9 am there
almost 5pm here
c'mon, it was verging on funny.
almost 3pm here ...
well keep trying and I will keep bugging him also and I will tell him about this channel
atmega: you are Canadian?
woot I think I got him
* flyback bites elmo40
that is me... silly Canadian ;)
starting to get rather cold up here.
High/Low: 55/32°F (12/0°C);
yeah here in pa it's starting to get crappy too
I need to hurry up on my new control for the furnace humidifier or just put the old one in place for now
wearing socks is now mandatory
thx btw JT-Work
hopefully this machine will get a good home
I don't know enough about them to really judge but seems like it worth trying to fix up if it needs anything, at least to someone who works or uses them
large machine! i would need a *real* shop to put it in
antiliberal answered me
yeah he told me
I know this may be a basic question regarding motor windings. Am I correct in understanding that motors of higher voltage generally have more windings of thinnner gauge wire?
higher voltage implies lower current. but not always :P
depends on the strength of the motor. stuff like that.
so for say a like size motor Nema 23 for args sake with similiar torque rating that has 90v as apposed to one of 24v the 90v will have a higher winding count of thinner gauge then the 24v?
SteveStallings is now known as steves_logging
elmo42 is now known as elmo40
good morning guys :-)
skunkworks: the rotary rotated last night!
i'm looking forward to the get-together in november
seb_kuzminsky: me too
seb_kuzminsky: I really should reserve a room somewhere...
not using the camper bus this time?
I think it's too late in the year to risk not winterizing it before then
it's still a little tempting (I could use it without water)
I'd have to shower in the shop... sounds not too fun.
yeah there's that
I was trying to remember - there are showers in the shop?
skunkworks: there's at least one that I know of
cradek: that is where we stayed last time :)
jepler too (and he says he wants something nicer this time)
do you remember what it cost?
only issue was internet was a bit spotty
not off the top of my head.
I thought there was a bit of a discount because of the fest.
I have been noticing more wired than wireless connections in slightly-upscale hotels lately - it's nice because it actually works
seb_kuzminsky: how long do you think you'll be able to stay? I'm trying to figure out how many nights I need.
i'm planning to drive thursday & arrive thursday eve, hang out friday & saturday & some on sunday morning, then drive home sunday noonish
i'm trying to remember the hotel i stayed in
I took 12, 15-19 off; I don't know if I'll stay all that time or not.
I must get a lot more vacation than you do :-)
my constraint is more family-time than vacation-from-work time
heh, how long until they're old enough to maintain sanity and function without you for a week?
sometime close when they are going to college?
good question! but by then they'll be so big they wont want to hang out with me, so i'm enjoying it while it lasts ;-)
oh they still think you're smart and cool? yeah you better enjoy that!
when it switches from "help me draw a picture of a fire truck!" to "can i borrow $500 for new tires for my truck?"
just keep your current truck and give it to them when they're 16 - problem solved
i drove it up to my brother's place the other weekend, and he gave me a hard time about the baldness of the tires
maybe i should have asked him for 500 ;-)
did he ever get his truck to work right?
yeah - it turned out to be an embarrassing problem
he'd switched the air filter out last fall, so we assumed it was ok without inspecting it
a rat had built a nest in it
evicted the rodent and it ran much better
i'm just glad we didnt buy a $2500 fuel injection pump
what's the crazy tlo probing work you guys have been doing?
i saw the commits go by out of the corner of my eye
you know how tool touch off is relative to the current work coordinate system? now there's another scheme you can use to make it not move with the work system. a fixture that sets on the table, for instance.
i have a little problem with my onboard gfx card and emc axis 3d view (opengl). i see some strange black bars across the 3d view which change position when i move the axis window around the deskop. but with glxgears it looks fine. does emc use some special opengl options or could i change something for the opengl display to get lost of these black bars? this only happens with hardware acceleration. when changging to software rendering it
displays fine but is much slower
(in fact, under the covers, it uses the G59.3 system, so you just set that to match your fixture and leave it)
is there an ini entry or something to make it default?
seb_kuzminsky: probably totally useless for you, with a knee
JT-Work: no, but AXIS and touchy both have options in the gui
Fox_Muldr: I don't have any advice other than use software rendering
elmo: a thousand miles south of canadia
it seems like it could be useful with a knee too - if i have a probe switch on the table, and i know the current tlo already, then move the knee, couldn't i use the probe to find the new z of the table?
i'd use the probed location in g59.3 to update the work offset instead of the tl-offset
I'd have to think about that
yes I guess so
cradek: that's sad. i hoped to find out why i have only with emc these display errors.
Fox_Muldr: what other gl programs have you tried?
on ly the default glxgears and glxdemo
Fox_Muldr: on one of my computers with 10.04 the Axis menu has black lines through each menu item
cradek: i only have them in the 3d view. the 2d part is fine
oh i meant JT-Work :)
is there an opengl test program which i could try?
when you switch to perspective it's wrong, but in the ortho views it's ok?
cradek: i never tested because i only use the perspective view. but i could try after i replaced the software with the hardware opengl driver again :)
oh by "the 2d part" you mean the non opengl part
yeah the rest of the gui without the 3d view
"your video card or driver is bogus somehow" is the only diagnosis I can make - have you searched ubuntu forums etc?
so only the opengl window part is affected
in my experience, software rendering is plenty fast for AXIS which only draws basic stuff (lines). It also has the benefit of always working right.
... and not screwing up realtime operation
ok so i think i let it be on software rendering for the time. top says that when emc is running i have ~20-30% cpu power left so it should be ok
i thought it would be better to have hardware acceleration for opengl instead of software rendering but you are right. the 3d window doesn't realy have such complex scenes to show
IMO, those proprietary video drivers only cause pain, and should be eschewed if at all possible, especially on a realtime system
for EMC: plenty possible
for heavy 3D cad work: probably not possible
big difference :-)
glxgears show in fullscreen only ~12 fps but i think that's ok
[15:04:10] <cradek> http://timeguy.com/cradek-files/emc/2010-10-11_07-44-03_831.jpg
Fox_Muldr: have you turned off the compuwiz or (whatever it is called) effects?
JT-Work: yeah I'm cncing it
cradek: very cool - how did you make the slots in the smaller stepped block in front of the belt box?
mechanical part is pretty much done now
skunkworks: how to do that? i never changed anything that i know of named like this
seb_kuzminsky: very very slowly with an 1/8 end mill
.010 per pass, 0.700 deep
that's a long 1/8 end mill!
that takes some time
yeah, and I only had one :-)
obviously I need a slitting saw
system ->prefs -> appearance -> visual effects.
set it to none and try again
it there a bearing clamped in that step block? slide it in and clamp it in place?
sort of - there is a bearing between the Al plate and the black box
skunkworks: it is already set to none
there are three bearings in the box (fourth in the servo motor) for the belt to pull on
skunkworks: i think for now i can live with software rendering but thanks for the hint
JT-Work: did you see your collets in http://timeguy.com/cradek-files/emc/2010-10-11_07-44-03_831.jpg
- I used one to hold the 3/8-16 tap - thanks again
I see them now :)
JT-Work: very nice to have an uninterrupted set for weirdly sized stuff like taps
yes, I ended up purchasing 4 sets of different sizes for the Discovery 308 and had 16's already for the lathe so I have 11-32's
and having them overlap is nice to have more than one collet of the same size
there is another little thing that bugs me. i know that emc2 saved the state if the cnc was homed and it's current position when i exited and restarted emc. but now when i restart emc i always have to re-home the cnc and it starts at 0,0,0. is there a flag which defines if the homed-state and current position should be saved or not?
Fox_Muldr: well yes and no - you can save position, and you can also not require the machine be homed. they are two separate options. (I recommend using neither for precise work, since the machine can move when off)
cradek: at the moment while testing with my cnc i would preffer to save the last position of the cnc when i restart emc
cradek: where could i set the option to save the position when exiting?
after a power down it is always a good idea to home a cnc machine
JT-Work: for the experiments i do at the moment it is more an annoyance for me than helpfull
then just set the no homing option in the ini
to optionally save joint positions between runs ([TRAJ] POSITION_FILE = position.txt)
(excerpted from http://wiki.linuxcnc.org/emcinfo.pl?OldReleases)
and I know what you mean when setting up a machine...
JT-Work: i still have not mounted my home switches and home it by eye sight which is really time consuming for every little test
ok i will look at the ini
Hi all. I have a question about this; http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Axis_Embed_Video
jogging to the home position (or use G28) before shutting down is another way to deal with that
I think I was sold a bad beagleboard on Ebay :(
mozmck_work: mine doesn't work right either, and it came direct
mozmck_work: I think there have been several broken revisions, sadly
the instructions at the link indicate to "place some code into .axisrc"
hmm, this one was billed as new, but had obviously been screwed down before.
that file doesn't exist by default... true?
lumberjack_jeff: right, just create it
I can't get the serial to work, and I plugged it into a monitor and booted it and just get noise on the screen.
cradek: I think you can get an RMA if you bought it direct.
I doubt I can.
mozmck_work: it's been a long time...
Endeavour_ is now known as Endeavour
mozmck_work: you can file 'substantially not as described' with ebay and return it
so the code at the bottom of that link is the code that enables custom axis screens?
cradek: I think I'll do that.
I was hoping to have one to try some ideas on.
[15:33:40] <lumberjack_jeff> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Axis_Embed_Video
Like emc with xenomai which already supports the beagleboard.
oh sorry, it was right there
yeah, that file at the end
mozmck_work, I can toss mine in with the JTAG ICE
I'm pretty sure it works, though I haven't done much with it
I don't know what revision it is either, I got it at ESC a couple of years ago
thanks. I was confused because the same .axisrc code was posted for another completely different axis custom view setup. Now that I know that this is the basic infrastructrue for any custom view, it makes more sense.
SWPadnos: would you? That would be great!
sure. I think it even has an SD Card with several partitions on it (Android, Linux, something else ...)
Neat! I haven't gotten mine near that far.
I wonder where it is
heh, under something like my 10 to 6 pin adapter...
lumberjack_jeff: yes it allows you to embed whatever program you want into a tab. It would not surprise me if that code eventually makes it into the basic AXIS so you don't have to put it in .axisrc.
Thanks again cradek! :)
JT-Work: thanks, now the position is saved. now i can home the axes much quicker from the current position when i drive them all to 0,0,0 because i doesn't always leave the cnc at 0,0,0 when i exit emc :)
hah! next to the printer, of course
oh, and it's a rev C2 board
Mine is a C4, but I don't know what the differences are.
yours is explosive
[15:42:58] <SWPadnos> http://elinux.org/BeagleBoard#Revision_C3
I wonder if my 100' hdmi to dvi cable could be part of the video problems?
unless you have an extender of some sort, that's probably a bit too far
I think it's about that long, maybe only 50'
nope. I need to get a shorter cable I guess.
try with a 6' cable, and if the problems go away you'll know
unfortunately, I only know the high end places for that kind of equipment, like http://www.gefen.com/
I may see if Frys has something. BestBuy wanted something like $40 or $50 for one, and I got this long one for free.
heh. the Gefen stuff probably starts at $400 or soe :)
I'm just talking about the 6' cable!
isn't there one with the monitor?
yep. monoprice is the best for that stuff
and network and audio cables too
nah, I still use CRTs, and the LCD here are work has a vga cable.
But it has to be a hdmi to dvi, not dvi to dvi cable.
ah, connecting a laptop to an HDTV?
Thanks, I'll check out monoprice.com.
No, beageboard to LCD!
would you like me to throw in a cable or an HDMI->DVI adapter?
If you have one handy, yes!
I have a few from Monoprice :)
do you have an HDMI-DHMI cable around? I have an adapter that would make that work
is a 3' cable long enough?
I'll have to check what else we have here. 3' would be long enough.
here's the monoprice page on those: http://www.monoprice.com/products/subdepartment.asp?c_id=102&cp_id=10231
you should just buy a few and be done with it, it's under $20
Yeah, I was looking at some on Newegg. I'll stop by Frys later this week too.
monoprice will cost less than the gas to get to Fry's
I have a couple of DVI to DVI cables here, and an HDMI to HDMI. We got an adapter for HDMI to DVI but it is the wrong gender. Male on both ends.
huh, like a very short cable
I have to go right by Frys to get somewhere else I have to go anyhow.
just hang the Beagleboard off the back of the monitor with that :)
that might work. I'll see if it will fit in there.
JT-Work, flyback , could you pass the mazak info onto ichudov? ( gotta go ) thx
nah, no room.
[16:00:23] <atmega> http://usa.denon.com/us/Search/Pages/DiscontinuedProductSearchResult.aspx?k=AK-HM100
that's probably a better HDMI cable
atmega: yeah, why don't you send me a couple?
Should be solid silver for that price!
JT-Work, did you pass the info along or you want me to?
I have not done so yet
making parts in SW :)
flyback hello, i got no response but i'd think he'd be interested & able to move it
hello, how do i stop 10.04 from making login noise? i tried System Preferences Sound mute and Theme = NoSounds, yet get that drum solo ecohng all over the library :(
antiliberal origionally asked me if I wanted it but I am in pa and no way to move such a beast, i'm also an aspie so I would have a breakdown trying to drive that far :P
I might have to play with that sw eventually
the topic I mean
I have a CANUCKLOAD of steppers
including some more ones I got from a dead copy machine a few months ago
a vepx? one looks beefy
i've been listening to this nonstop for days now: http://www.youtube.com/watch?v=ljsUVDOcYB0
are you learning Japanese Seb?
* flyback headbangs
which element are bobble heads made of ?
(watch the video with the sound off ^^^ )
Je and An aparently :-)
now antiliberal is wobbling on some of the facts a bit
so if the guy is trying to sell it etc i'm sorry
I am going to chock him later
although it might be worth it I dunno
it was my understanding that the guy is just moving at it has to go
* flyback feels like a total idiot now
he told me he needs to double check with the owner first
anyone know how to size o-ring grooves for sealing?
last time I made some I went to an o-ring mfg page for the info
or not, it seems more confusing than just winging it
is it just a dust seal or does it have to hold 4000psi?
well, 150 is probably more realistic
I'd read up on making the groove the proper size for the application then
[16:48:41] <atmega> http://www.oringsusa.com/html/gland_design.html
for static, it says the clearance gap is 2x 1/2 C
the 2x 1/2 is really odd... as is C
Gland Depth x Groove Width (area of the gland) must be larger than the cross section area of the o-ring. Otherwise many bad things will happen to your design.
yeah... that one is easy to calculate
JT-Work, oh ok good :)
see you later all, work time
me too :0
oh I am at work!
JT-Work: You're boss is going to fire your ass for goofing off on irc!
I should fire my ass for goofing off...
or give yourself a raise, one of the two
hard to decide that one Jymmm
hmm, according to this http://www.virtualbox.org/wiki/Migrate_Windows
I might be able to convert my windows installation to a VirtualBox image.
That's timing out on me right now.
SWPadnos: said it couldn't be done though ;)
I have a good drive in a recently-gone-bad (lightning) computer, and I'd rather run it as a VM under linux anyhow.
VMWare converter didn't work for me, on this Windows 2000 machine
I may give it another try, when I have a few spare hours
:) The page I linked said it may not work as well. This is from a DELL gx280, so I don't know if windows will want to see DELL hardware.
I don't have a copy of XP to install or I'd just do that.
would you like me to send you my XP64 disk? :)
(and I hate the idea of having to pay for Windows :) )
since it can't be upgraded (!), I don't think I'll ever end up using it
I have Windows 7 since it came with my little laptop
though it will probably look for ASUS in the BIOS (and of course it's only on the disk, no install media came with it)
I have a COA on that computer, so I guess I could install that? would XP64 have compatibility problems with VS2003 I wonder?
there used to be issues with 64-bit drivers on XP
but MS decided for some reason that you couldn't upgrade XP64 to Vista (though I haven't checked on the Win7 upgrade policy)
huh. is that an upgrade?
huh. well apparently you can't upgrade *ANYTHING* to 7, unless it's Vista
no, I have the full XP64 Pro OEM version
no, I meant XP64 to Vista :)
I'll figure something out here. Thanks for the offer though.
I hear 7 is much better than Vista, but I'm not too interested in that either...
yeah, I have friends who use 7, and it's better than XP (which Vista didn't seem to be)
I would start with 7 just because it's the most recent, so I'm pretty sure my software (Altium Designer) will work on it for a long time
Need to get Altium on Linux :)
I'm sure the performance of a VM on a 6-core would be O
yeah, I keep telling them that, but they don't listen
it runs under Wine, but has some issues
I noticed that Altera has their WebPack for Linux (free) now.
oh, that's great
yeah, might make Altera chips an option for something now. Looks like they are more expensive than Xilinx
like the Pluto :)
or maybe I could use one of the 6 or so NIOS kits I have here
SWPadnos: Well, did ya fix it?
SWPadnos: whatever you needed the ISP for
oh, yes. mozmck brought me a JTAG ICE, which allowed me to program all the units
and the bugfix did work, which was nice
jtag I know, what's ICE ?
in circuit emulation
mozmck_work: I prefer LN2
Liquid Nitrogen, about -180F
Liquid Hydrogen just scares the shit out of me.
ah. we had a duyer (sp?) full of that a while back. You can make some good ice-cream with it.
you can make toe sickles out of it too
has anyone tried using the optical encoder on an inkjet print head under emc2?
I've got a hundred old printers, and am building a mill out of old inkjet printers. I expect to reuse the optial position sensor, and was hoping someone else has scavenged a whole inkjet carriage before.
mozmck_work: But what's really fun is when the fill valve on an environmental chamber gets stuck OPEN, and when you go to release the first safety latch on the 16" thick door you flood the entire room and hallway with 2" of LN2
and there is a 5000 gallon tank of the stuff!
juri_: I've used the encoders that came off the little servos in very old hp printers/plotters
the original deskjet had one
cradek: i'll go break down an origional deskjet then. ;)
are you talking about those, or the linear strips?
i'm talking about the linear strip.
Can anyone think of a way to get electrical cable through a bulkhead in an airtight manner when space is limited?
it probably would work fine, but is probably useless as a real length standard - they probably stretch
mmm. worth noting, thanks.
Jymmm: How airtight?
so, i'm going to want an encoder on my motor, and the head then... my mill is really a monstrosity. :)
andypugh: under negative pressure, apx 6" SP
[19:33:24] <Jymmm> http://news.yahoo.com/s/yblog_upshot/20101012/bs_yblog_upshot/mcdonalds-happy-meal-resists-decomposition-for-six-months
Won't a conventional cable gland work?
andypugh: link to pic?
(which are potted up with special white goop using a squidgine tool)
SWPadnos: I have some of those already. the bulkhead itself is 0.750" thick.
what's the material?
of the bulkhead
I need to get power inside the air scrubber
I dont even have room inside the air scrubber for a gang box
do you have room inside the box to stick a plate on the bulkhead and then thread one of those onto the plate?
you might be able to get away with tapping the MDF, but I don't think so
(not to mention that it's a strange tap for those, IIRC - I don't think it's a standard plumbing or conduit thread)
I might be able to do a plate.
The prooblem is once inside the scrubber, how to terminate it so any dust doesn't clog the outlet.
(worse case scenario)
err, well you'd want to hard-wire whatever it is anyway, since it's hard to get sealed outlets
you could try using a shallow work box instead of the standard depth, those are around 1" I think (but may have no back)
That's what I was trying to avoid if possible. but I guess instead I'll just drill a 3/8" hole and run the wire through it then seal with RTV
that's probably the simplest solution
Just tight a knot on the cord for a strian relief =)
stick a cable gland on the outside and tighten it down hard
Or I might have some nylon cord clamps around here somewhere
I tend to use cable ties round cables as strain-relief
and put a knot in the cord on the inside
SWPadnos: thats what I meant =)
I think I have some of these around here too http://www.hometech.com/hts_images/va/va-2110_1.jpg
Well, I think I'm almost done. I finally found a place that has a selection of draw latches, and have the US distributor checking on extended length catchplates for me.
hello, flyback told me to talk to you
i'm not sure about what, though
uh oh what did I do?
i don't know.. apparently you are in my state
no, not that one
oh, you know someone in my state
you have the Mazak?
no? but maybe flyback does? he said he found a home for "it"
it looks like i need more information
yea, one of us does for sure
well - that is about as criptic conversatoin as you can get ;)
I don't even know what I said :)
well I have seen that one speak rubbish many times before
which one archivist ?
you are the normal one
I wonder what pepsi is smoking today
andypugh: sorry about the translation poke, when I played your video my other brother John said he could not understand what you said
No problem, it has been said before. I think the YouTube translation is hilarious.
two countries separated by a common language :)
pretty neat cutting the splines
heh, folks from California can't understand folks from East Texas!
you tilt the head to match the pitch of the cutter? or something like that
Cali is a whole nuther country I think
Yes, the hob has a pitch angle engraved on it, and I set the head to that angle.
* JT-Hardinge must spray some paint on the hydraulic pump for the backhoe...
that looks better now the proper shade of yellow
yellow on a john deer?
JT-Hardinge: so you getting mazdak or something?
Jymmm: no, I don't need one lol
JT-Hardinge: Oh, that's right you've been playing with your new toy yet?
which one Jymmm ?
the 8000lb one
mine only weighs 6000lb
the cnc center
or is it just a lathe?
the VMC is fully up and running now
and the lathe is too :)
cool, didn't have to retrofit it huh?
nope, just plug it in and learn how to drive it
JT-Hardinge: so, how many times have you hit the curb when parallel parking?
with a big truck Jymmm you just push the offenders out of your way and park
The new Ford Focus has automatic parking. Scary.
out here as long as you park far enough off of the road so others can pass when poaching your ok
anyone realize that you can create a complete program with ngcgui?
[21:32:15] <JT-Hardinge> http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/id,3408/catid,40/limit,6/limitstart,0/lang,english/
sorry about the confusion guys
pepsi was mismessaged because antiliberal (the guy you should talk to about the used cnc machine) changed to his nick and it reset on my xchat client
This is cool, how they do that??? http://www.metal-morphous.com/pages/services/our-process.php
the dollar bill looks raised
well crap, I'm getting a joint 2 following error on the lathe
I am going to predict - bad tach.
* skunkworks likes to wing it
worked yesterday darn
I think I borked something
Jymmm, you hang out here?
go inside then
* robin_sz stretches