anyone here use Retrospect?
how do i set tapes to recycle?
wrong channel - this is EMC the machine tool controller, not the storage solution
my daughter dropped her phone outside the grocery, and someone took it
"I don't speak much english"
you'd think a foreign student could speak english at least well enough to have a conversation about a phone he found
cradek: Do you remember the name of that uC thingy we chatted about that has a white box and runs linux?
no, this actually runs linux
marvel 'plug' computer?
that looks cool
I'm always worried about a company that doesn't put a picture of something like that on the first page you get to
beagle runs linux, fwiw
how about a pogoplug
fenn: I know it does
those plug thingies should have more USB ports
the only downside is it needs wireless
my name isn't "all" !
well, I'm originally from around Pittsburgh, so you'ns would be more appropriate
yuns freaks me out
marvell needs to get a clue
the picture on their web site doesn't indicate the scale of the computer
re cooling coolant, dont throw ice cubes in the bucket, throw the bucket into ice cubes ( to keep water out of coolant, put the coolant container inside an ice chest )
what if it's water based coolant?
it's ratio would be changed on the fly
fenn: thank you
TI should have put the beagle board in a box and added wireless, they'd be a giant company by now
the power supply is a good idea too
they could put all that and a pico projector in a box and people would be beating down their door
it still has a number of issues, which i don't really understand
jmkasunich: Somehow I bet when ya piss off the wifey, she has colorful new names for ya =)
like they aren't allowed to provide documentation for the 'PowerVR' 3D acceleration chunk that's on the silicon they fabbed..
so there's still no drivers for that
JymmmEMC: that's a problem I don't have
someday chip manufacturers will realize that is self-defeating and stop doing it.
jmkasunich: Oh, she's the silent-when-she's-pissed-but-dont-go-to-sleep causei she owns a cast iron skillet and knows how to use it kinda gal =)
no, she's the ex-wife kinda gal
jmkasunich: Sorry, forgot, my bad.
anyone ever take a nameplate off of a machine? Tricks to removing those nail/rivets?
or drill directly into the center of the rivet
seems like chisel or drill are the only options
sometimes the drill can get stuck and just spin the rivet forever
if you are lucky it won't spin when you drill, and the head will come off nicely
if it spins you might be able to use a center punch to make it stop
I'd use masking tape (actually I wouldn't ever bother repainting a machine)
I probably shouldn't paint it, but it looks so horrible
I felt compelled to take it apart anyway due to some issues with the gearbox
toastyde3th is now known as toastydeath
teach.py imports emc, which is emc.py ( i think), where can i browse emc.py in the cvs tree?
tomp, did you try locate?
good thought, but over the web? ( on a w$ box during lunch)
I tried for you, but I only have pure-sim on this comp
thgx, im walking the cvs tree now
any idea if its true that.. tthe imported file is a .py?
dunno py at all
oh, found the web search tool, on root of emc project.. error: emc.py no such file or directory
ok, so ASSumption wrong
kinda hard to search for just .py and just emc. too
maybe it's emc.in
haha "of course the extensiobn of tthe filename will be ignore,..."
I hate that
what is so hard about requiring exact file names?
i wonder how many emc.* files are on the system? ( i spose the correct one is retrieved due to some path )
locate emc. finds a batch of chat logs
hmm, so i have a load of ffox tabs open, so i close the startpoint, the cvs text view of teach.py. whynot, i can us e thier search to find teach.py, right? WRONG 'error:teach.py: no such file or directory'
its a lib? ( some compiled binary )
m = Py_InitModule3("emc", emc_methods, "Interface to EMC");
it's a python module called emc. it is written in c++.
got lots to learn, didnt know python was anything but interpreted scripts
it's common to write a program using a combination of python and c/c++
no complaints, didnt know there was such a mechanism.
sometimes people write the part of a program that needs to be fast in C, or like in our case they want to use python to twiddle a C/C++ library like we do NML
thx, off to find 4n25 optos ( ah the cpp stuff was to commun wil NML )
yeah that's what 'import emc' lets you do
which is pretty slick - that's how AXIS works.
the little python i wrote, imported text file of python subs, so lotsta learn
cradek: do you know of a good intro to writing simple interfaces between c/python?
fenn fwiw http://starship.python.net/crew/mwh/toext/node9.html
'from c to python' 'from python to c'
tuples, so thats what van morrison was singing about
* fenn looks
thanks this looks like what i wanted
hey fenn across the street from the school of architecture is a store for students books etc, and they make these great donuts, like new orleans beneits ( ? spelling ) try 'em!
( well 30 years ago ;)
i have no idea where the school of architecture is
fenn: It's across the street from the donut shop =)
fenn: look for the big ugly building
(sorry, couldn't resist)
maybe i'll go there and order a moebius donut
I grew up in a college town, you can always tell the architecture prof's houses
what's the nix utility to add line numbers?
and not in a "oh look at that great house" kinda way either
Ah, found it... nl
fenn_ is now known as fenn
[07:34:46] <alex_joni> http://www.gamedesign.jp/flash/chatnoir/chatnoir.html
i caught the cat but nothing happened..
Toss pea pods, carrot sticks, bean sprouts on wok with hot oil, toss in hoison sauce and diced cat. Tastes just like chicken!
seems like there should be an open source version based on oneko
seems the trick is to stay 2 or 3 dots ahead of the cat
yeah, reminds me of 'go'
no big surprise, since it's .jp
fenn_ is now known as fenn
yay, LiveCD seems to be working ok
alex_joni: You should get VMWare so you can prelim test ISO's
JymmmEMC: I did.. but that doesn't quite cover a physical test
btw, did you try portable ubuntu?
on a laptop ? :)
no, on a doze
tomp: how did the usb drive work?
skunkworks: it worked and aint very persistant :( it remembered i added 2 more panels, but didnt remember tcpip settings among other things
its enuf to hand out a couple demos of emc, but would require more work to get it stickyfied
ah - I had made a persistant usb drive - but don't think I ever tested it.
jack palance , zero mostel, david witmark in a move about the us health service tracking down the plague
try mplayer -vo gl2 http://radiocommando.com:8000;stream.nsv
so the battery went out on this laptop after it finished burning a cd, but before brasero ran the integrity check. how can i compare a cd to an .iso file ( what i figger the integrity check does )
tomp, just md5 them
an ISO is a perfect replica of the cd
track for track byte for byte
so they will be identical
ah, brasero lets you do it after the fact... but its just and md5 sum, and i got nothing to compare it to... rebuild the image & reburn or,,, have faith.
do you think that its best to make a hw chopper, PWM current level control then feed the output into the uC running it all to chopp the lines or should i chopp say the enable line? .. read somewhere i cannot chopp the eneble line on a L298 cause then the current sense resistor wont work ?
oh, thx, make an md5 of the cd and one of the .iso, gotcha, thx
L298 is a chopper itself isnt it? ( or is that the 297 ) ?
L298 is jut the H-bridge
use the 297, less expensive than 1 days work
only half stepping :)
and i do not learn :)
i value experience and knowledge higher then money :)
yes, i thought it went to more divisions, but is only full & half... you want to sense current and chop the pwm? what is the current the analog of, the load?
how high the charging of the coils have come
for current limiting
i sense the voltage
and when it reaches a threashold i cut the line, let it fall, then turn it back on
tomp what you using to do the streaming?
i read streams with mplayer
i PWM the threashold voltage to an opamp or a comparator, when the voltage over the current sense resistor reaches the voltage of the thresahold i get 5V on the out, so i cut the line, let it fall until the line goes 0V again, then and let it start over
ahh, i'm playing about with getting dvb multicast streaming working for another application
MrSunshine: i'm reading how a pic is used with 297 and 298, what they enable/disable..
ooh, dvb, drool
its just digital TV lol
not in usa, you cant get the cable or the satellite for dvb
its a euro thing
australia isnt euro ;--P
jepler: thanks for get back to me on "distance-to go"?
ooh its an ozzy thing
you have free to air television though right?
with an antenna
yep thats what i use at home in chicago, not many people do anymore
tomp, but im not using 297 :)
i use the AVR to control the h-bridge
but i want hardware chopping so i dont have to use ADC
MrSunshine: i know, i was wondering how this guy did it tho, maybe it would reveal how to do it w/o 297
if i could pulse the enable line for each bridge, i could get away with chopping not even using the uC at all
this comes over the free to air system
Anyone into electronics-design who can help me with a question about ESR in caps ? (specifically, if I replace a 10V-rated cap with a 16V rated cap of same capacity and manufacterer/type, will it effect ESR at voltage actually used either negatively or positively ?
(aka: will it hurt (much) for the ESR if i stick in a higher U-rated cap for a blown one)
ESR is pretty unrelated to most other specs
_justa_, probably not enough to worry about
whats the app?
but if its not posible to sense it when using enable/disable, and i dont know why it wouldnt i have to channel it into the uC or put some kind of switch .. on one of the input lines
Valen: and the pc card has an rg59 connector?
tomp, have a link to the page you read on ?
Valen: standard PC onboard SMPS-arrangement for (i think) chipset-voltage
tomp: has a coax connector, nfi what type it is ;->
so far ive got a chopper working but only in EWB :)
should be fine _justa_
do not know how it would react on real life testing
Thanks for the info/help.
you may want to avoid too low an ESR cap
btw, a chopper does it ONLY limit the current or does it limit the voltage also ?
some SMPSU's dont like it
as its pulsed i guess the avarage voltage will be quite low
when it finaly reaches the current it should have
Valen: hmmm.. relying on a cap's ESR to avoid some oscillation or spiking ?
its a turn on thing
when it first powers up it can have issues charging the cap before blowing something up
oops thats for MrSunshine, sorry
and some others can have issues with oscilation etc
its not so much relying on as it needs to be at least some value.
but unless the cap you are replacing is a low ESR cap then there shouldn't be much fuss
Valen: got a card model? ( with coax connector )
umm all of them here lol
dunno how it goes with your encodings but the chatter on the mythtv forums seems to indicate it works
Valen: I'll check if I can figure out which particular cap-series this one is and see if I can replace it with anything 'in the same range'
ok, an acronym i've come across, thx
wouldn't worry about it too much
the -t stands for "terrestrial" tomp
it's a good 1MF; nice bit of current there.
cool, have they got a dvb-extraterrestrial?
tomp, nah he uses the L297 straight of so he is limited to half stepping
-s for satellite and prolly -c for cable, but we cant get that here, there is too much encryption and they don't trust us not to pirate it if they give us a way to get it legally
right, but how did he chop it? when the Vref is < than the sensed voltage, i think that may be of use
_justa_ whats the capacity? 1 mega farad is rather a lot of capacatance
tomp, L297 is a chopper
the sense goes into the L297 and it does the work
yes and you want a scheme that does not use a 297, but dotn throw the idea of how and when away when you throw the chip away
Valen: in USA you drive across the Canadian border out of Detroit, into Windsor Ontario, stop at 'Pirate TV' and get all your satellite decoders with auto programming ;) big store
ahh there it said in the L297 datasheet, that the lines going out of L297 INH1/2 is used for chopping, they go into the ENA/B on the L298 :)
so mystery solved =)
i can use a full HW powered chopper if i like =)
cool, inhibit sounds like it
the new encoders they are using for satellite here for decent channels hasnt been broken yet
as far as i'm aware anyway
so i can go the lines directly to ENABLE if i like :)
yeh, an on going battle. the cracker are pretty clever
only problem is, what will happend if there isnt a PWM pulse comming from the AVR
will it go as high as it can and burn out, or will it not go anywhere :P
tomp: Valen could always stream it to ya - http://www.ustream.tv/
MrSunshine: i dont see a problem "TTL Compatible Enable Input: the L state disables the bridge A (enable A) and/or the bridge B (enable B)."
a pull down resistor will be nice
and you can 'double up' the outputs ( use both bridges on one brushed dc motor )
wow, that uvstream looks good, anyone know a live stream for UK football? I cant get BBC stuff being out of the country
MrSunshine, you could always us an allegro chip, like a A3983. Everything is built in.
or a A3979
interesting, they've replaced 1/8 with 1/16 step in A3979 compared to A3977
I figure the only downside to those chips is the thermal pad on the bottom.
Hard to solder by hand.
MrSunshine: Allegro has lotsa nice chips but all seem too integrated, none seem to just do the control side, they want to be the driver also
32 uSteps on the 3292
The A3986 only has MOSFET gate drivers, external power stage.
geo01005: yep, i missed all the 'external' ones, looks like something for MrSunshine
"Motor power is provided by external N-channel power MOSFETs at supply voltages from 12 to 50 V."
It even does the boot strap supply for the high side N channel fets :)
ok, thx again for the md5 idea, gnite!
Valen: I use a twinhan card.
geo01005: I think the a3986 sucks. from what I read. It doesn't microstep correctly.
some light reading. http://www.cnczone.com/forums/showthread.php?t=24699
steves_logging is now known as steve_stallings
Skunkworks: Look light your are right. If nothing else it would be a pain in but to solder. I have never used one.
anybody tried these new geckodrives? G251 ?
steve_stallings is now known as steves_logging
geo01005: I think SWPadnos has
He is out of town now right?
I'll have to ask him later.
how does idle current reduction for steppers work ?
steppers should be run at full power anytime they need to hold position.
the usual current reduction system is basically a one-shot timer which is reset by any step pulse. when the timout passes, it modifies either the current sense or reference so that the chopper delivers lower current.
it's a bad idea in cutting applications because a cut can move only the Y axis (no steps on X during the whole cut), but it creates cutting forces which can push the X axis out of position
if current is adequate, X will hold position. If it's not, X loses position and because you have no feedback you've just ruined whatever you were cutting
jepler, ye .. i figured about that :)
can you tell me if the new 2.3.0 v ersion is totally compatible with the 2.2.7 anm mesa m5i20 ?
depends what you understand with totally compatible
excuse me.my name is Alessandro
if you're using the m5i20 driver in 2.2.7, then you probably get the same functionality (5i20-wise) if you do the same with 2.3.0
This page describes the incompatible differences between 2.2.7 and 2.3.0: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?UPDATING
items 1.1, 1.2, and 1.3 may require your attention.
1.4, 1.5, and 1.6 affect many fewer users
probably not 1.3
jepler, the idle current limiting must work bad for more stuff also, some percentages of current is quite low sometimes, if you want to reduce the current by say 50% .. how do you do that when coil1 only has 7.8% current flowing in it? :P
seems like a stupid system :)
If anybody is interested here is a quick blog of my SPI reprap heater:http://geo01005-ideas.blogspot.com/2009/04/extruder-tempuratue-control.html
i'm using the hal_m5i20. Must i replace it with the new hostmot2 driver?
I don't think you "have to" but you might want to
Guest395: not in 2.3.x
it will probably be dropped for 2.4.x, but in 2.3.x you can still use it
so, if i update the system to 2.3.0 , i must not replace anything ant the old program running ?
Guest395: that's how it should be :)
ok thank's to all
Guest395: if it doesn't work, you can always switch back
make sure you backup your config though
sudo rm extract-cd/casper/filesystem.squashfs
sudo mksquashfs edit extract-cd/casper/filesystem.squashfs -nolzma
err.. sorry :)
if it doesn't work, it will be a problem
oh boy my new $165 water pump pulley came in... I bet I don't break this one :/
if you do, make another!
don't think I can make another one for $165 it is a casting with very little machining on it
they have plenty in stock... I wonder why
a regular breakage from "mechanics"
err.. because they keep breaking?
it is pressed on the water pump shaft and it breaks if you try and press it off :/
a lot of stuff is designed for assembly only
this was designed in the early 50's
they were just learning one way back then, I have a clock here to repair
Smiths electric clock mid 50's bent tabs and press fits
* BJT-Work is off to play with the tractor
they're going to take over the world
we have already taken over
just ask ChanServ
fenn_ is now known as fenn
Hi,I'm trying to play with EMC2.3.0 but I've hit a snag... It's installed on a computer which isn't connected to anything so isn't causing any mayhem in the workshop but I can't get started on running any simulated jobs because I can't home the X-axis. When I fired up EMC2.3.0 with my previous machine ini file, all the axes initially read 0 however, when I hit the home button for the X-axis, it started to increment up and is now well ov
what config are you running? it is looking for a home switch and never finding it.
you can change the homing velocities to zero to tell it not to do that
Its a slight variant of the standard stepper mmx4ax - all homes are set to 0 as are all the instances of 'HOME_IS_SHARED'
homing velocities, not homes
[22:24:28] <cradek> http://linuxcnc.org/docs/2.3/html/config_ini_homing.html
as you can see from the table you want homing type "none" if you have neither switch nor index
OK, what I was trying to say is that the ini file should not be looking for home switches - I have never used them on my machine.
OK thanks, I'll look up that reference
seems like it must have a nonzero homing velocity though.
OK, that's fixed it thanks - one of the axes had a non-zero velocity in - don't know why although it had never upset things before and I've been running this ini file for over a year.
One other thing - can you remind me please where I can change or remove the EMC2 AXIS cutting file that comes up in the initial AXIS window? Thanks
hm, I can't find it in the help
I think there's a way to set the splash screen in the ini, but maybe not.
No, I couldn't find anything about it - it seems it opens a file axis.ngc in /usr/shares/axis/images. I wonder what might happen if I just delete that.... I can't see any possible place in the ini file to specify any different behaviour
it's only "documented" in the source that I can see
I renamed that file and deleted the original - now AXIS starts up with just a simple display of the axes and everything seems to work oK