right yestarday whacthing tv, they was talking about the hig temperature of the planet ..
anna_emc: if you like kittens, that site explains how to make them grow in glass bottle so they stay small
and, many tropical animals are now appearing in south italy ..
Temperature is rising slowly
Jacky^: we have parrots in UK
seriously ... theres wood in Surrey that has a colony of over 2000
appareently the local peregines find them very tasty :)
oh that bug keeps watching me...head swivels 180 degrees
robin_sz: we starting to see someting like that: http://it.geocities.com/entomologymelchionda/zanzara.html
3 degrees of freedom I think
[00:04:48] <robin_sz> http://news.bbc.co.uk/2/hi/uk_news/education/3869815.stm
les: its sizing you up for dinner ...
actually thats the good news ...
the bad news is it will mate with you first :)
yeah I read that. Female mantis eats mate WHILE mating.
I new a girl like that once ...
I new several.
today, was another county shoot
or inter-county I should say ...
40 shots at 25yds
anyway, out of the 12 in our county team, I had the highest score :)
I didn't doa thing today....should have gone out and done something like that
robin_sz: nice :)
396 ex 400 :), goo dway to start the winter season
I just cleaned house.
but you still left the bugs in
yeah had the front door open.
dont worry, the chicken will eat it
sweeping out the dust
I have here ... a spike from a "stinger" .. the thing police put in the road to deflate car tyres
les: can I give you website url to anna_emc ? :P
Tommorrow, I have to evaluate a "trapped torsional resonance" touch switch
very neat, Ti tube, 3mm dia, with hypodermic style sharpened point
"trapped torsional resonance" ... is that the name the marketing department gave it?
I was asked to eveluate the technology
im still trying to think what it might mean
les: what your url ?
I should not say too much I guess..... now you are gonna hunt it up
ok now you have inside information.
this is on top of the air generator thing
on that, hordes of patent attourneys are desending upon me
well, I found a paper :)
wow, the Q values are high too ...
I am playing with that concept for some stuff
Qvery high in metals
yeah, seems higher in torsional modes than I might have expected ...
didnt even condier that before really
les compliment for your site!
Q over 100,000 in aluminium ...
I think I know the paper you are looking at...out of U. texas....I have to meet that guy I think
thats the one
Any way, many possible uses. I'll talk to them.
I suppose, its not vastly different from the modes in quartz crystals for oscillators I guess
I think they are labeling me as "mr acoustics"
I don't want to be pigeonholed that way
I am an aerospace engineer
ok, I was an audio r&d engineer a while
but by eduction I am supposed to do rocket science
the frequencies in there are quite high ... sound more liek an SAW filter with attitude than anything else ...
it is not unlike some SAW technology
now, a SAW filter with a Q of 100K or more .. that would be interesing
well 100K Q makes it a very good sensor....breath on it from a meter away and it would change a bunch
hence ther interest
I'm sure you will come up with some novel (and patentable) use for it :)
I am asked to do that.
It's a living!
maybe some sort of distance sensor?
where did anna and jacky go?
I bored them to death?
oh, those two? they will be in a dark corner
anyway, bored now looking for a neat H bridge drive design
over 4 amp 30v?
i.e. not a power IC?
5amp 60v ideally
sort of 4 IRF530 sort of size
les I'm here
ah both anna and jacky are back!
I guess IRF530 is pretty standard
but not the control part
just the amp
the 200X will do the clever bits
well plenty of stuff out there I guess
and drive the amp with analogue
well, buggered if I can find it :)
makes me think of the chinese iron bit
oh, those are popping up all over
let me dig up a link
[00:33:53] <les> http://cgi.ebay.com/4X8-CNC-Router-Table_W0QQitemZ7545412614QQcategoryZ57122QQrdZ1QQcmdZViewItem
guy is a sleazy schill
I smoke last cigarette! go to sleep
jmk_away is now known as jmkasunich
ok, night from me too
OK... 4.27 is looking good to go.
uploading now? or already on a mirror?
what is it, 16:25 over there ?
hrmm... wonder where that server is then...
west coast probably, they're 3 hrs behind
Check back at 03:00 your time..
I'll check tomorrow ;-)
darn, that Andy H. is getting to be a ....
hello everyone :P
Jacky^: are you here?
do you need a controller?
im tryng to hack some board
i'm interesting in servos driver
I made a sequence generator for L298 with ALTERA FPGA
coulde be nice :)
i've here an old olivetti board
i was talking with robin_sz about it
it seem have a good control on motors
tryng to understand how it work ..
with 297 - 298 ?
it has L296 near the power supply area
and, two L298
near , also have some lm339m
with a lot of diodes..
L296 is probably step down converter for +5v
the board is also soubleface pcb
it is complex enough :\
hard to understand how it work ..
can you give to me a photo?
it has a keyboard on the other side
i cant take a photos now :(
just tomorrow ..
it looks like an old writing machine
ok, do you know FPGA's?
what is ? a microprocessor ?
no, is a reconfigurable hardware
ouch :\ never heard ..
l297/l298 is easy enough to understand. No need to involve an FPGA.
this is the board cradek uses: http://www.pminmo.com/l297-8/L297_8schematic.pdf
ok, now i go to smoke a sigar, at whot time you go to bed?
i'm smoking to :)
[01:03:35] <jepler> http://www.pminmo.com/l297-8/l297-8.htm
i'm here yet ;)
when use 297-298
this case sem a bit more complicated
2 servomotors, 2 l298, 2 lm339m
ok, so , l298 can be used also for dc motors ?
same circuit of stepper
298 is a simle dual h-bridge
nothing else 8 transistor!
the key is 297
this board have not 297 :\
so.. what drive the 298s ?
the mcu or cpu
thats tha hard side
i think you can wire 298 direct to stepmod,
my cousin is entusisiast of this board ..
bosone: it seem to have a complex encoder too
in one altera epm7128 (about 7 euro) you can fit 3 of 297 whit chopper!
Jacky^: l298 just takes logic-level input
jepler: i believe..
whot do you mean complex encoder?
where, 2 shoube be +-
one is probably common
another is a square wave for step
another, square wave for revolution
and latest seem to be a sinusoidal wave
i not opened it, but i think not ..
bosone: do you use servos for your applications ?
at moment no
for stepper i think isn't simple
freqmod is for encoder to, but..
ah.. right yestarday i was talking with robin_sz and paul_c about stepper dual shaft with encoder
should be very interesting to try
to see what happen
you must try, i think the PID isn't so simple to set
for stepper ?
i gnored them
i used only P
others to defaults
at least in 'my steppers' ..
the top is brushless with encoder
i get a lot of differnce changing wiring, instead
ah.. brush motor.. i know :)
too expensive for me
if you find it in the trash .....
jmkasunich: Still around ?
if i can run a good servo i'm happy
hi paul_c :)
Jacky^: Thought you had gone to bed.
hehe, not yet
talking with a nice friend here :P
bosone: never seen some nice schematic for servos online ?
excluding vinvezov website..
if i find something, i tell you
it could be a great thing
if you like electronics, you must know FPGA's! is the revolution!
[01:30:07] <bosone> http://www.df.unipi.it/~flaminio/laboratori/pdf_files/IntroFPGA.pdf
sure, let me know
we can have the opportunity to make an asic at home, simple as pic programming, but...
bosone: it looks nice, like nutchip idea :) but its something i cant understand yet :(
i cant understand the convenience
maybe re-usable ?
[01:35:32] <paul_c> http://www.theregister.co.uk/2005/09/09/bush_caption.jpg
there are a great project site www.opencores.org
paul_c: Yeah, stepped away for a bit, back now
paul_c: ba days for president ..
Jaky^:in one chip you can insert a pic mcu, usb port, and everything digital
bosone: nice, it sound like hi-tech, i like it
[01:39:03] <paul_c> http://www.google.co.uk/search?hl=en&ie=ISO-8859-1&q=failure&btnG=Google+Search&meta=
.... Oh boy, oh hum....
Jacky^: yes, if you see recent hardware there are always reconfigurable logic like ALTERA, XILINX, LATTICE
old hat... google spam (try "french military victories" and hit "I'm feeling lucky"
bosone: good thing
jmkasunich: Just wondering how best to respond to the likes of Jon Elson & Andy H. with regards BDI builds..
andy H seems to want you to regenerate a 700MB iso to change one option, that's just plain silly
paul_c: try to send a few trillion dollars in texas
jmkasunich: The annoying thing... IF he had read the on screen help AND the warning at the root password screen, we wouldn't have all this debate.
your most recent reply seems adequate to me
How best to put "Read the flippin screen and pay attention." with out coming across as rude.
with maybe... "You gets what you pay for."
politic is dirt everywhere.. no doubt
* jmkasunich does not discuss politics (or religion) on IRC
nothing to be gained from it, except aggravation
* Jacky^ agreed with jmkasunich
* paul_c is >this< far from being banned from the CCED list...
for discussing politics? or for baiting the doze users? ;-)
seems they don't like my alt. tag line over there..
* jmkasunich stopped reading CCED months ago, too much traffic
what is the tag?
bosone: i'm interesting on learn how to program microprocessors
ok, i can help you
Jacky^: FPGA is more simple that you think, you can draw the logic schematic like eagle, and pc do the rest (routing and fitting).
Proud to be unamerican | A war over oil is immoral, wrong, and illegal.
right yesterday i was sayng i've some nice ICs driver but i don't know how to drive it.
* jmkasunich should not have asked
bosone: it sound coool :P
Jacky^: You need to look at the datasheets for that chip.
there is some info on driving it...
yes, there's some infos
but its a very complex sequence table :\
need more computational power for your old pc? http://www.gpgpu.org/
is usable for realtime?
i think is very interesting to use graphic card for speed up emc
really, i dont think emc need to speed up
i think to
i need to get better motors !
an drivers too ..
bosone: I also like embedded system
a nice thing could be to get emc running on a tiny pda :P
i've gpe linux installed on, but not so much time to try ..
hard life :)
Jacky^: What IO is available on the PDA ?
paul_c: probably.. nothing
i think is'nt a right thing
just a pcmcia slot
BT is excluded, of course..
That opens up the possiblity of plugging in a parport or 8255 IO card...
but realtime platform can be used on your pda?
paul_c: could be nice
If there is a patch for the CPU, realtime is possible.
bosone: thinking.. why not ?
cpu 400 mhz
the problem is to hack them
beacouse is portable, and probably the cnc not.
is nice, but not indispensable
think, if you can use RT on a pda
you can drive also other than a cnc
not bad at all, i think
is more usefull view the machine status via remote X,
this its already possible
no, is nice RT on PDA
i can run ssh on my pda
no, no... Remote X either direct, or via VNC is evil...
a waste of bandwidth.
paul_c: he probably mean only to see*
not do other ..
EMC can run remote GUIs without using X or VNC
yes? i'm intersting on it
there are a client
All the interfaces are "clients". Just need to set up a config to tell the system what & where.
ok, tomorrow i try something..
bosone: there are a lots of interesting things..
Jymmm is also working on some touchscreen panel, with remote gui, etc etc..
* paul_c does a bit of testing with EMC on a box over there ------>
and a GUI on *this box.
Have even networked with an EMC running in SoCal
if i put the x server on an other machine, (whitout KDE!) , don't speed up emc?
define "speed up" please? faster GUI response? faster machine movement?
If you don't install X on the EMC box, it can run faster.
Higher pulse rates.
whot is SoCal
like.. 9,000 miles from us in Europe.
18k km ?
half a world away, in more ways than one
maybe more ..
G night guy, see tomorrow
paul_c has changed the topic to: Welcome to the Enhanced Machine Control forum - Support and development of a linux based CNC control. | Home page www.linuxcnc.org | Regular Developer's meetings every Sunday between 14:00 & 18:00 GMT | General linux discussions and support the rest of the week. | BDI-4.27 released. New stuff added, some taken away.
Good night to all
Right. I'm gone too.
Wake up and smell the half caf, half decafe, non dairy creamer, cafe mocha latte, in a tall venti cup!
can I have coffee instead?
Just a coffee for me thanks
If I setup a headless box to be the controller, and then a laptop to control it, what do I need to do to start things from the laptop?
plat/nonrealtime/bin/tkemc -ini foo.ini
so how would that start things on the headless box?
that assumes the server side is already up and running.
No, just plugged in and turned on.
riiiggghtt...... So you are wanting a magical command to issue to the headless box to start up stuff there ?
that's what magical commands are for!
You'll need to write an inet.d daemon to listen on port 50003 and start up EMC as soon as the client GUI attempts to connect.
I'll assume that's not easy todo
how would I start some remote X thing on the laptop?
is there a functionality like google desktop search, but for linux?
I've never used google desktop search. There are full-text search programs, like swish and glimpse, which I find useful daily when searching a million-line software project.
anyone know some basic schematic of a servo driver that can work with step-direction in emc ?
hehe.. found: http://www.servotogo.com/
a little expensive.. :\
Jacky^: yeah, for a step/dire servo drive see www.geckodrive.com
servotogo are OK for real servo cards ... but as well as the STG card, you need amplifiers too.
robin and waht about the first on this page :http://www.jrkerr.com/boards.html
ydo you think can work in emc ?
this, should be low cost ..
with the step/direction convertor, yes ot would work with emc ...
is it cheaper than a Gecko servo drive?
lower power ...
i prefer gecko, no doubt
is this one cheaper?
i'm not sure
i must ask..
ok $150 for the amp board
how much the gecko ?
I cant see if it will take step/dire directly
about the same I think .. 179 .. but is 20A, 70V
so the gecko is cheaper :)
you found it ?
you'd have to use the G340 drive with EMC, not the G320, so $148
emc might struggle to make fast enough pulses for a G320 ...
with a good encoder and a decent servo, it might need up to 100Khz
a G340 would only need 10Khz as it has a pulse multiplier
at the end of the day for small, cheap machines, you have to hand it to Gecko ... they do good value for money
not the same as "real" servos, but not the same price either
you should look at Jon Elsons servo boards too
i like how gecko work, but i dont like as it is maded
what dont you like about the construction?
what if an IC burn ?
i have no schematic..
i cannot repair it to myself
and probably not in italy
well, with respect, thats not sensible
do you have a schematic for your mobile phone?
for this reasin i use very little my cellphone :)
the video card in your PC?
anyway .... you know about the geck guarantee?
first time you break it, the repair is free
thats is good
and anyway, its is mostly SMD, unless you have hot air rework facility, you will have trouble repairing it anyway
this couldn be a big problem..
the biggest problem is dont having the schematic
i dont like to use something without understand how it work
and how can i modified (if is possible) ti get it working better
well, whatever ...
I think you will have to design one yourself from scratch then
and, i'm not a 'normal user' who buy a driver connect a motor and finished ..
i will stress my driver in all ways :)
you need to decide what you want to do. build a machine ... write code or build drivers
any one is a big project
i i wasnt thinking in this way, i wasnt build anything from myself
i love linux just for this reason
but at the end, probably, i will end using geckodrivers
not 100 % happy
and not for the cost
well, use something else then
buy a baldor for �500
or Jon Elsons servo amps
ah.. today i received 30 6n137 i ordered 4 days ago :P
tomorrow i will try it on my board :))
I just boaught a servo amp on ebay ...:)
6A cont, 12A peak
could be nice.. to find it
latest time was a battle for a servo motor of 14 W in the US
with the shipping, after .. is not so convenient for me
and.. anyway it dont solve the problem i was sayng
you still have not decided real servos or step/dire servos
until you decide that, you cannot proceed
to be honest, these drivers are not for me
for my cousin
how big the table?
i've no idea yet
well, that is step 1
do not even look at drivers until you know how big the table is
but around 2-3 mt
i think 1 mt
not 100 % sure
do you know the standard sizes of sheet metal?
few mt, i think
2 x 1m
1.25 x 2.5m
or 2m x 3m
choose one :)
no idea.. i can ask tomorrow
well, those are the sizes ...
do not assume
ask your cousin what size he needs
1.25m x 2.5 is doable with steppers
2m x 3m is servos really
he dont like steppers.. i'm sure
well, he probably has no understanding
servos are better usually, but cost a lot more
in many cases steppers are fine, sometimes better
I know ..
for real servos, budget 1000 eur / axis
servo card (800 eur) drive amp + motor + encoder
he made things like these: http://www.raccordifasano.com/04.htm
use plasma tu cut steel
and he wants to cut the flanges and holes with plasma?
well, I can save you a lot of time ...
dont bother ...
he cant ?
plasma is terrible for small holes
liek 8mm in 6mm steel
no.. i think his flanges are at least 10 cm of diameter
yes ... but the holes in the flanges
the 6mm or 8mm holes
cheaper to have them laser cut to be honest
i dont think he can afford it
probably, its just an 'hobby' ..
I said it would be cheaper
you know I laser cut steel parts for people?
say, 6mm steel
100mm dia, 70mm hole
say, 8 6mm holes for bolts
... guess .. 1.5 eur?
roughly 2.2 x cost of the metal ... at most commercial laser cutting places
i've never seen what exactly hes doing yet
bat he talked to me about flanges
well, just make sure you know what plasma is capable of and how cheap it can be to have parts laser cut
if you appear to be naiive, a laser cutting place might try and charge big $$$
but if yoyu look like this is a test order and the real contract is for 100 parts ... they usually charge cheap
and if you supply DXF file that helps too
anyway, coming back for a second to the old discussion
it seem there are no many chances for servo drivers..
other than commercial products, i mean ..
i'm googling and re-googling :\
anna_emc: eh ?
well, I have not seen many servo amp designs yet .. but maybe from manufacturers application notes for power mosfets
yeah, im too ..
it seem not enough for a real use with emc
well, you first need a STG or Vital motion card ...
but you cannot buy them
becuase they dont have schematic
so, I guess you will have to make your own motion card first ...
the hard side seem to be the logic
I think Imperator is making one, with CPLD, perhaps you can help him to do that
i will try to ask :)
bosone: you around ?
boring day reading patent aps
you know, I caught that big bug and put it in a terrarium.
is it happy?
today I fed it a grasshopper.
It was hungry!
its happy :)
I think I have been out in the woods too long?
that or too much moonshine
a friend of mine went to Masirah island (sp?) for work for two years
near Dubai I think
where is that?
short wave tx station
for amusement they had a big glass tank
into which went scorpions
better than telly :)
I was wild watching that thing grab the grasshopper.
Grabbed it with those giant claws and chewed it's head right off
I wonder how many they eat a day?
I was wondering too
it is back in the "praying position "waiting for more prey
trouble when you introduce a foriegn bug
it usually screws some small part of the ecosystem
from my reading this one has not been bad
eats good honeybees and hummingbirds though
but not bad like kudzu or something
no, an oriental plant...a vine
it chokes things out
we might have that
grows half a meter a day
red/green hollow stalks
about 3/4 inch thinck?
I think some linux program is named kudzu...because red hat is near here
i'll get a picture
its the hardware detection tool I think
ahhm have pic
not what we have ...
[23:56:43] <les> http://www.jjanthony.com/kudzu/
it will cover your house or car!
if ever there was a need for a specific herbicide ...
you'd make a fortune!