they are all Al or Ti
theres one stainless one that I've seen
inova are Al + Stainless
inova hasnt mentioned stainless on any of the pages I've seen so far
hmm seems you're right, only the inova X5 has a stainless head
I am hoping to go all out
either way i think you'll be hard pressed to put an inova out of commission :)
saphire window, retained by electroplated nickel so there are no leaks
Its not going to be mass market
cradek: John's BP2 has unequal axis speeds, X & Y are rated at 80 IPM, Z is only rated at 24 IPM. So on G17, only X & Y, so 80 IPM is OK. But for G18,G19 then Z gets dragged into it, so 24 IPM should be max. But I think it's trying to do some faster feed, Z stepper stalling, I'm still gathering data. (I hope this fits in one line!)
that's not what i meant, i mean they will probably outlast their owners :P
if its only got an anodised aluminium body it'll get all scratched up and rough pretty quick
Kimk: I think that is one for the mailing list.
Yttrium Stabilised Zirconia torch, that's what we want.
andypugh: I don't mean to shout "fire" in the theater, this may already be fixed in 2.4.x and head. I know a lot of fixes are coming soon.
I don't read the dev list, but I have not heard any mention of changes to the trajectory planner
andypugh: In fact, it may be fixed right here in the shop and I'm doing something wrong, LOL.
Sure it isn't hardware? Like a PSU drooping?
* Jymmm steps on the plane and notice a friend he hasn't seen in years and loudly says HI JACK!
I don't even see any Ti flashlights (Ti would be light and longer lasting than Al)
there are Ti ones around in the custom scene
pcw_home: I got the 5i20 thanks
but Ti is still pretty soft
keys would scratch it
Titanium flashlights? Why bother?
* JT-Hardinge wonders if you have to do a g43 before a tool table touch off???
Welcome JT, sorry about the bad one
might as well make it out of unobtanium
KimK: if you look at the velocity it should tell you whats happening
now I have to put it back in LOL
and clean off the plasma table
also if you limit the feed rate to 24 does it still have a problem
All my au flashlights are just fine, even the nbc stick
I had two consecutive jobs that revolved around applications of Erbium, in very different fields (optical fibres and spring steels)
but first I have to play with the dog
Au flashlights? You must be very wealthy!
au is platinum isnt it?
Valen: 4D cell LED Maglite
au is gold
Pt is platinum
I'll take a an Au or a Pt flashlight! :D
ahh I was thinking pb was gold for some reason (i know its lead)
I'll even accept an Ag flash light ;)
Valen: nbc stick == 4D cell LED Maglite
I want a Hg one!
I'd like a Ne one
Valen: maybe your'e a confused alchemist
andypugh: you are one cold.... ;)
Not as cold as Valen
heh make one out of cesium
Valen: As in, If I have to pull it out and hold it by the head...
andypugh: I don't think it's hardware (electronic or mechanical), we've been making a lot of repairs to the BP2, and now we can see smaller and smaller defects (the BP2 is looking *really* good now). It seems to stall about the same place and the same amount, very repeatable, but I am still watching it to catch it in the act and record velocity.
open the box, its all shiny
melts in the hand ;->
Valen: then explodes
nah just turns into a radioactive puddle
probably burn a little
its a little bit radioactive or it can be
how about DU for that nice heavy feeling
cesium can explode upon contact with moisture
I can get that
[00:18:50] <andypugh> http://www.youtube.com/watch?v=uixxJtJPVXk
I was REAL CAREFUL working with it.
I didn't think it was as bad as say lithium
not only can, in all likelyhood will
You do the first 4 at school....
Valen: it is worse
Watch the Youtube...
Valen: Cesium gas actually (in my case)
it gets more reactive as you go down that column
for more fun... toss some of that in a chamber of F2
yeah right you are
don't know why I figured it'd be less reactive
I was trying once to work out what a good electrolyte for a cesium/flourine battery would be
FUUUUUCK!!!! I would have been *SO* screwed when I did work with cesium. Glad I didn't know it was THAT reactive!!!
how about nitroglycerine
good thing is Ce is not too common
Jymmm what were you doing?
No, not as much as cesium, becase it was under power and and turned into a gas.
good thing it's called Cs
Cs gas NE CS gas
oops Ce is Cerium
I can remember the location on the table of elements but not the symbols :/
yeah i only picked up on it because i was looking at a pack of cerium enamelled TIG electrodes earlier ;)
Valen: Environmental Testing... IR countermeasure system under power - 7G Vibration testing on 110lb magnesium vibration table connected to 220V 3ph coil. The amplifer cabinet itself was 8ft wide, 7ft tall, and water cooled from the tower on the roof. AND to top it off.... roof leaking into the 440@400A channels in the floor
hmm, enamelled, that can't be right
I play a game with a chemist friend "I spy with my little eye, and element beginning with P" "Plutonium?" "No" "Lead?" "Yes, your turn"
Valen: ALQ-157 http://en.wikipedia.org/wiki/ALQ-144
[00:27:36] <Valen> http://pipeline.corante.com/archives/things_i_wont_work_with/
is a good site
How does a 3P coil work?
Valen: See the things sticking out to the far left and right (with the angled support arms)
[00:29:37] <Jymmm> http://www.skycontrol.net/UserFiles/Image/Photography_img/200712/200712philip-stevens-dust-devils-2b.jpg
what was the ceseum for?
Valen: That's ALQ-157. Yep each one has a "light bulb" filled with cesium with a double ruby envelope encasing it all.
so the cesium is basically being an arc light
Jymmm: Interesting contrast to another state-of-the-art martial force projection system: http://www.supershipsworld.com/HMS%20Victory.jpg
looks like a giant bee =)
With three rows of spiracles?
I wonder how they rememberd what each bit of string did?
Does anyone know what is involved in driving "AC Servos"?
depends on the type of motor
if its induction your on your own ;->
I suspect that they are.
Ive seen a paper on using a induction motor as a servo and getting good performance but its tricky
yeah they have all sorts of crap with rotating magnetic fields and stuff
Most people just use synchronous PM (so called BLDC)
Hmm, actually these are Synchronous AC Brushless Servos
Synchronous is easy
They have Hall sensors, so that makes them PM?
And Hall for coarse rotor position
Resolver feedback :-/
I like resolvers (and you dont need the hals if you have a resolver)
There are a set of 3 of them on eBay for £50
since the resolver will give you rotor position
they are basically big steppers
(but nobody runs them that way)
How do you handle resolver-EMC2?
Im working on a solution
the motor driver needs the resolver input so it can drive the motors, you can then pass that through to emc if you want
I have wondered if an off-the-shelf LVDT decoder would work.
If you dont need absolute, you can use a resolver-quadrature converter
Thing is, Resolver is analogue, and EMC is digital
encoder on one of those will need to be absolute I'd imagine
stupidly fast ADC + micro?
It's not DC-analogue..
pcw_home: are you working on something like a resolver-input version of the 7i33?
whats the output of a resolver then?
How much? Can I have it by the weekend?
Yes, 7I49 6 channel resolver + 6 +-10V outputs
that would be really slick
Errr, guide price? I am suddenly very interested in this ebay auction..
especially if you could optionally bypass some of them and feed in quadrature instead
andypugh whats the acution?
Valen: Not telling :-)
lol I'm in Australia, it'd probably cost $900 to ship them here
[01:46:59] <andypugh> http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=250601674134
besides I've just gotten a stack of 500W allen bradley bldc + drivers for like $30 each
with harmonic gearboxes
Now I know that these are basically BLDC they look a lot more tempting.
yeah they look the same or similar to the ones we got
the plug on the back is for the encoder
Oops! I just pressed the "buy" button
well ours come with a 2048 count encoder on them
tripped over huh
7i49 is 6 channels for $184 holy crap
I'm debating the best way of driving our rotary table
does hm2 support these 6 channel boards 7i48/7i49 already?
the controller can operate with step + dir signals or as a +-10v servo
7i48 yes with Jeplers patch
That could be a "killer app" in the retrofit market
I'm worried about the +-10v signal though that it could wander and drift being analog,
Valen: that's why there's an encoder
Doesn't matter. It's part of the control loop
the upside is that EMC gets the encoder info back from the motor
trust us, servo loops work :-)
yeah, but in step + dir mode the controller I believe operates the motor as a stepper, so i feel it could be stiffer
To a large extent it only needs to be "a bit more, a bit less, now a nudge the other way"
Never believe anyone that says "Trust Me"
this is trying to hold a rotary table though
we have servo's on all the other axies
but they are at least "digital"
PWM + direction
step+dir is for folk who only understand steppers and are shy of PID
7I49 support will be different as it requires some setup and has a different register map
andypugh: I'm not shy of PID, just $$$$$$
seems like whether it holds still is a matter of the quality of the worm engagement more than the motor
its a 100:1 harmonic drive
[01:52:48] <Valen> http://www.youtube.com/user/zyeborm?feature=mhw5#p/a/u/1/g2N910jNOnE
so there should be no backlash
If it is a servo motor then the step+direction drive is just handling the servo loop internally rather than letting EMC do the work. Where would you rather it happened? Personally I would go for "where halscope can see it"
and where you can have a dynamic ferror limit
I agree the control mode probably doesn't matter for stiffness - but if emc has the feedback, you can see any deflection and tune it yourself
I was just saying I believe it operates the motor somewhat differently
and if it faults, it'll stop motion but not lose position
also I need more stuff to get a +-10v signal out
why do you believe that?
vuagley recall something in the manual about it
"More stuff" = A capacitor and a resistor :-)
Yes it operates differently because it runs its own position loop
that wont get me from PWM + dir to +-10v
it would do 0-10v
True. Many drives are 0-10V and direction though.
I would love it if that were the case
To get +/- 10V you need a relay too (or, more practically, a solid-state equivalent)
well a single PWM will give you +- 10 if you have the right offset...
relay would be to crappy around the zero point
I'm using the mesa product chain, and I'm not sure how to tell it to do that lol ;->
Good point there from the man who sells PWM to +/- 10V hardware.
there is a mesa product to give +-10v outs
but last i looked it was 4 chans wasnt it?
You know that pcw _is_ Mesa?
Sorry, I inferred a missing question mark
's why i subtly talk about mesa stuff in here to get free tech support ;->
There are inexpensive single-chip solutions for motor drive that would work too.
Its very simple, just a few op-amps and a CMOS buffer powered by a voltage reference
7I33 uses a mosfet switc for direction, 7I48 uses up/down mode and differential amp
I spose an audio amp style with +-10v rails (or so) and an offset would do it but I hate analog electronics
step + direction I should be able to get working just off GPIO through the interface card I already have
if your amp has PWM+DIR just use that
I would if it had it
it does not
step + dir and +-10V
or RS232 but that isnt in EMC
actually I am not Mesa, they were running just fine without me so far this week
This chip looks fun, 3A of 50-450V takes Hall inputs and all the power electronics is on-chip. http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=0415219
that's really the question I spose, is it worth $80 (or a large amount of time) to get the signals into EMC, and have it run the PID, or is using the thing in step+dir good enough
If step+dir is there and ready to go, then try it.
need to learn lots more EMC too for that lol
You really dont want to use direct Hall commutation for a servo system, for a fan, ok
have to work out how to a) tell the mesa stuff to have a step+dir output b) add an axis, c)hook them togther
But I don't like the idea of stacking control loops (we have them 3 and 4 deep at work, and it makes for interesting tuning. ie there are 20 of us who spend 2 years tuning each new application)
andypugh, for the brushless motors we are doing I'm planning on using a rotary magnet sensor for absolute position sensing
d deal with the weird pinouts of the stepgens on the standard bitfiles
gives 256 counts per turn and serials out the postion at up to 30k RPM
pcw_home tell me about it
pcw_home: I thought that the hall sensors were just to tell the drive where to send the current to get theexpected result?
as you go to higher speeds you need "advance"
They (the Halls) are fine if you want the motor to act a a 3 segment armature DC motor
Serial absolute encoders is complicating things. Quadrature into a mesa card is simple and relaible.
pcw_home: That was what I was expecting to do. There are cleverer ways?
andypugh, yeah but you dont get 3 phase drive signals out of that
Absolute is ideal for BLDC
pcw_home since I'll be running 3x mesa style amp chans and one of the analog style, is there any harm in leaving 25 pins of the card floating?
I recall hearing that Hostmot2 already has a way of producing phase-drive signals for a BLDC from the encoder position
yeah but last I looked EMC cant use it, I think it was in the motion control system that we don't use
The problem is cogginess. You can use a quadrature encoder for commutation, but you need an absolute reference to get started
once started the three phase reference angle is just P mod encoder count
Valen: Connct them to LEDS to blink patterns and look technical.
More seriously, they will surely be needed for general IO like limit switches etc?
I have 4 servo chanels 3 of which are in 7i40's (well 4 currently)
Theres a three phase PWM module that should be easy for EMC to drive
but all the details of commutation would probably need HAL components
I have a theory that IO requirements always grow to fit the pins available.
actually that might work
its dodgy but still
feed the 7i40 with +-10v (or whatever)
andypugh: AMC Gremlin
hook one terminal up as ground and the other as the +-10v input
Good point, but possibly not _the_ point
some smoothing caps and a resistor to suck the caps down
that gives a +-10v output
with all existing parts
<googles the Gremlin> Funny how US "subcompacts" are still huge. Even the US-market Fiesta has grown more wheelbase and a boot (trunk) on the back, and looks a mess.
be scary to drive something like a smart there
Smart Cars are scary to look at, much less be in one.
Ah, checking http://www.fordvehicles.com/cars/fiesta/
you do get the hatchback too, which looks better.
I rented a Smart a while back, it was by far the cheapest way to get from Cervinia to Val d'Isere for back-to-back skiing holidays.
(and yes, there was plenty of room inside for skis and luggage with only one person)
And I am curious as to what would be scary about driving a Smart in the US? They are quick enough to not be in the way, they steer and have brakes. What's the problem?
your surrounded by "trucks"
well i'd imagine its something akin to why riding a motorbike is dangerous here
Do they habitually drive over other cars?
you loose any fight you get into
they are americans
"pcw_home since I'll be running 3x mesa style amp chans and one of the analog style, is there any harm in leaving 25 pins of the card floating?"
No the daughter cards have pullups on appropriate pins so are fine if disconnected
The Smart actually has very good occupant protection.
But then I have never owned a car :-) I have always used a motorbike.
pcw_home: ok so It would be a matter of just splitting the ribbon cable from the mesa card and putting 25 into one and 25 into the other, and supplying both with external 5v power
andypugh: it is probably very good, but KE is KE, and about the only thing to reduce the other guys KE is mass
Yes for most cards (some newer ones have SPI or common enables so are tricker to use partials)
There is 5V power on the ribbon cable, you might be able to have multiple connectors on the same ribbon cable, threaded such that only some lines go to some connectors, but all get the 5V and enough grounds,
I supply external power anyway
theres only one +5v on the ribbon
If it is more than signal power then that makes sense I think, though I seem to recall that the 5V pin on the connector has a not insignificant current rating.
I've considered using half the grounds as +5V but making it compatible is a bit tricky
I was trying to run encoders off it
It would make sense to have more +5v, after a half meter of ribbon theres not much power left really
I would imagine it would run encoders no trouble? But I feel nervous having any opinion at all when pcw is here
voltage dropped too much
Most modern encoders are OK (maybe 50 mA each) but older ones may be 100 -300 mA
these are pretty new, but there were 3 of them
I plugged one in and the voltage was something like 4.3volts so i went screw it and wired in external power
Also differential drivers draw more
its the size of the conductor in the ribbon cable thats the problem
Yes its just 28 Gauge
Also the 7I40 draws 5V power as well (a 7I33 usually much less)
what did you think of the "dodgy" method using the existing 7i40 and shifting ground around a whole bunch ;->
Well it wont work very well unless your amp has really good common mode rejection
why would that be different to normal?
also it will have a large dead band at 0
that would come down to tuning of the RC circuit no?
is the analog input differential?
Right, 0330 here, I ought to be asleep.
I was going to hook one output to ground, that should make it effectivley differential
That wont work as the output are not floating (you will just short it out when it drives high)
I'll cut a 7I33 in 1/4s and send you one
the inputs to the other module are floating however
Sort of iffy to drive their "ground" with a noisy signal floating or not
its awkward since you only need one channel, I would probably live with step+dir
those Smart cars only say they get an estimated 41 mpg. not even as good as a VW jetta...
diesel that is.
Wasn't the smart car originally supposed to be electric but they couldn't do it?
I don't know
nitromethane, the right choice for alternative fuel
ISTR reading that
I want a steam car... the old doble were pretty interesting
I remember nitromethane from model airplane fuel
you need a top hat, monocle, and tails for any steam traction engine
pcw_home, what does "istr" mean
anybody want a ringtone I made out of the game DeusEx theme song?
I seem To Recall
it dosent quite blend from end to end though... for a ringtone it should be fine :P
nitromethane is the "top fuel" from "top fuel drag racing"
nah, most steam traction engineers I've seen wear the typical old railroad style hats or straw maybe
i maintain it's not steampunk unless there's a monocle
brass goggles are also well established, it seems
could be. I've been to a tractor show near here with a couple dozen steam tractors several times. neat stuff.
friend of mine owns a couple tractors there and I've operated them some.
brass goggles are an acceptable substitute
I occasionally need a tractor, but not often enough to have a tractor
I'd want it to run on gas or diesel though...
what do you need the tractor for?
moving dirt? dog poo?
moving hay and dirt mostly
I have a couple of tractors that are both broken right now.
well that's the natural state of all machines
need to get time to work on them
I don't have anything gas except small engines. everything else is diesel.
cradek: Can I bother you again? I can't seem to increase the maximum velocity slider above the highest [AXIS_n] MAX_VELOCITY=. I have a [TRAJ] MAX_VELOCITY= that should be high enough, but EMC2 doesn't seem to accept it. If I have X at 80 IPM and Y at 80 IPM, shouldn't I set [TRAJ]MAX to sqrt(80**2+80**2) or about 113?) I'd appreciate any advice you may have.
mv = inifile.find("TRAJ","MAX_LINEAR_VELOCITY") or inifile.find("AXIS_0","MAX_VELOCITY") or 1.0
looks like the way to set the top of the maxvel slider is with [TRAJ]MAX_LINEAR_VELOCITY
[TRAJ]MAX_VELOCITY is defunct because it made no sense for mixed-units (linear vs rotary) machines
so now we have MAX_LINEAR_VELOCITY and MAX_ANGULAR_VELOCITY
OK, thanks very much. Is there a list of deprecated ini stuff so I can look for it and get rid of it? Or if it's not in the latest integrator's manual should I assume it's deprecated?
the closest thing might be the release notes, but even that's a bit shaky
even our sample configs are probably not totally clean
we try hard to make old configs still be accepted and work at least mostly, so stuff like that takes forever to become extinct
That's OK, I don't mind getting rid of cruft manually.
mozmck use a water spray boiler steam engine ;->
KimK: fwiw, you can see the relevant change under 2.3.2 on here: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Released
Valen: water spray? you mean injected super heated water?
mozmck: how cold does it get down there? I'm tempted to try a diesel next time I buy a car, but I'm worried about reliability in winter.
its a way of making a boiler, you have a plate you run your burners on to, then spray water onto the back side of it flashing it to superheated steam
stuart in kansas told me he uses a hair dryer to start his sometimes, and if's supposed to hit -15, he lets it run all night
It was down in the teens a good bit this year
er maybe +15, I don't remember the temperature he said
most diesels have a block heater you can plug in that will make them start very well in quite cold weather
yeah, the problem would be in the parking lot at work after dark...
my truck (powerstroke) started at 17 degrees but it didn't want too
had to cycle the glow plugs a few times
cradek (& everyone): Thanks very much for your help, I'll resume working on it tomorrow and let you know. If anyone thinks of any more advice, please do write it and I'll scroll back later and read it. Thanks again. Goodnight all.
I should have tried the bus when it was ultra cold
KimK: anytime, goodnight
A newer diesel would probably do better.
Valen: I see.
both engines on the bus heat the air intake, not the cylinders
it seems to work great (seems surprising to me)
the doble cars used a flash boiler that was up to pressure in 30 seconds from the time it was fired up.
cradek a direct injection diesel should be fine provided the fuel is a liquid
sounds like the same system mozmck
cradek: my truck has a fuel preheater as well.
Valen, I'm not sure. I know they had the water and steam in a coil of tubes and the fire around them
these new little clean diesel cars will be on the cheap used market in 5-10 years which is when I'll next be looking for a car (I hope)
mozmck: not the siberian solution?, they run the radiator water back into the fuel tank to keep it liquid ;->
they also call them water tube boilers as opposed to the fire tube boilers like a locomotive.
cradek: go electric ;->
Valen: yeah, so tempting to try building it myself
I know a guy who has
its not too hard
Valen: I've an eye out for a suitable little project car
get one without power steering if you can
yeah of course
no power anything is a big requirement
[03:21:32] <Valen> http://www.evcapri.com/
you can have vacuume brakes
you can power everything else
the fuel preheater is in the line just before the injection pump. up north they actually put anti-gel additives in the diesel before it goes to the gas stations (or so I have heard)
I know brakes don't take much vacuum, but still that's an unnecessary additional pain
electric power steering is probably ok too
its about $150 for a vacuume pump setup and it means you can use cars made in the last 30 years ;->
there are electric brake boosters I've heard.
some days I'm so sad I traded in my toyota mr2 with the shot engine - perfect for electric
it had no power anything
great track cars
I figure if everyone starts going electric it'll take the grid down.
I loved it, best car ever, but I was faced with spending thousands for a new engine, and then it'd be 20 years old and if someone ran into me I'd be out that cash.
mozmck: the grid already handles peak air conditioning times in the afternoon. charging cars overnight is no worse is it?
Arc furnaces run overnight for that exact reason
I don't know. maybe not.
if people don't naturally load balance, they could adjust the price during peak times, and then they would.
or perhaps the cars would load balance
it's cheaper to charge electric ovens at night in germany, giving off stored heat during day, people learn quick that way
there is a plan to have all the cars wired to a "smart grid"
so that charging is spread around and you don't get hot spots
there is also plans to use the cars as a peak load source to sell energy back to the grid
but I think thats not goign to happen
man, my kernel compile on 10.04 beta1 has been going for over 2 hours I think!
on a pentium4 3.4 ghz
wow thats nasty
I'm guessing your disk limited?
mozmck think I might be able to purchase a bit of inconel off you guys? about hand sized?
disk limited? it's on a 28 gig partition...
i meant disk IO
mozmck: Nickle chrome
sorry thought you were morfic
mozmck: Ni-Chrome is the generic name. Inconnel is the brand name
oh, I don't know. It's a dell GX280 I think
cant find anybody in australia who has the stuff
yeah its probably got a slow disk mozmck
ah. no, I'm not morfic, and don't think I have any Ni-Chrome other than maybe plating on an old backhoe cylinder rod. (if that's what it is)
Valen: not sure if my boss would bother with a small junk to australia, especially right now during the whole company splitting into sales company and manufacturing company
no worries morfic thanks anyway
you just sand cast it or something fancier?
some they cast differently, using plastic cores if needed, most is sand cast
cool I wasn't sure the sand would be up to it ;-> 718 is kinda noted for its high temperature properties
mozmck: did you make or make -j2, looking in top, do you see a lot of wa (wait)
seeing our centrifugal molds spin up, especially the 36" one is wicked
I'll have to go check top (it may be done now though). I'm using the ubuntu way so I ran debian/rules binary-rtai :)
lol being game huh ;-> trying for EMC2?
gcc has optimisations for atom CPU's now, I wonder how much difference that would make
oh, I've done emc2 realtime on 9.04 and 9.10 as well.
glad you mentioned top morfic. there were two instances of gvfsd-smb at the top taking 49% each
what kind of blocks/s could i expect from something like a core2duo or athlon64 X2 int he 2GHz range?
mozmck: i hate IO choking me down, i always look who to kill for it
that's a bug I've run into on lucid. so I killed them and it seems to be compiling faster now.
I have always been meaning to try distributed compiling
Valen: if you have multiple instances and they all have matching gcc and binutils, then distcc can be mighty fun for larger things
my athlon64 x2 5800 (3ghz) takes about an hour to compile and build packages for a kernel
maybe a ubuntu kernel with everything and their mother turned on?
yes, ubuntu git tree with minimal config changes for rtai
with blocks/second i would like to get an idea about gcode processing, if it has enough of an effect on max feedrate, perhaps i am asking it the wrong way, maybe i should ask "what is the limiting factor in EMC2 if it can not reach the servo's max speed"
sounds like your config is off if you cant hit the servo's max speed
reading encoder counts?
i am only gathering info, trying to get an idea about stuff my boss is going to ask me
if you see that a program doesn't get to the programmed speed, but you know that EMC2 has driven the servos faster at other times, then the problem probably lies with acceleration or lookahead
this one is based on coming across some (older) threads where feedrates were limited to something too low to be suitable, iirc, they maxed out at F22.
assuming that you're not hitting a configured limit of EMC2 (ie, you have not over-restricted the acceleration or velocity), and you haven't hit the feed override or something else silly, there are only two things that (should) limit execution speed
one is segments that are too small - like having 10000 G1 moves of 0.0001 inch each instead of a 1" move (or an arc)
SWPadnos: i am looking for something like "with emc2 you can achieve 3D surfacing speeds of up to X inches/min, provided your hardware supports it" to see if we are only *going to be* limited by our hardware and not by emc2
two is acceleration - corners theoretically require infinite acceleration, which of course you don't have on real machines
there is no X to tell you
it's dependent on the G-code and the machine specs
well, current post does output a lot of G1 for 3D surfacing, never liked that
one constraint that EMC2 always obeys is that it will never move fast enough such that it can't slow to a stop at the end of the segment
you can set a path following tolerance with G64 Pnn
when you do that, the interpreter will combine as many short segments as it can without deviating more than nn from the programmed path
as far as block processing speed, a slow-ish computer can process on the order of 1000 blocks/second
if you need that, you haven't programmed your CAM right :)
well, that's good news
SWPadnos: i tend to blame the post, i had a post i could use w/o proofreading the code before i run it, provided i did the work in the cam software right, but now i proofread code or suffer
well, suffering is limited, we do run it through vericut, still can be trouble some at time
the 3d preview is a good thing too
i am too tired tonight to take in anymore reading on the website, hence this basic question, i know i will be asked what would limit its speed, and i just say "a bad post might", which should hit camsoft or all others alike
it's lookahead that does it, more or less
SWPadnos: do EMC2 developers do contract work to add features to emc2?
the EMC2 motion controller only looks a couple of segments ahead
morfic, no, not really
there's nothing that prevents us from doing so, and a few things have been done for pay
because noone asks or because none of you have time, ok i guess you meant noone asks?
well, many of us have day jobs that could be an issue
(not me, I'm an independent consultant :) )
there aren't a lot of requests where the requester actually offers to pay though :)
they're usually more like "it would be cool if ...", or "EMC2 sucks because other controls do X better/how I like it"
i'm just asking, in todays meeting i brought up emc2, he agreed it should be evaluated, he asked who answers on forum/irc, i said there are users and developers, his immediate response was we *need to* hire a developer on contract/part time basis *IF* we decide to go with emc2
there are people closer to you who might be better choices
my boss wanted something open, and nothing is as open as emc2
if you need a lot of on-site testing/whatever
SWPadnos: if there is a pool of developers we could pick from, sure closer could be helpful
i talk to you since you happened to be very helpful last night and well, right now again
not really. we've considered having a list somewhere, but there are issues with that
sure. I happen to be here, and I like being helpful
even though I'm doing accounting
or sleeping. I think it's time for me to hit the sack. Good night
SWPadnos: i got a reply on cnczone.com to a post where i asked what i really get from a commercial package vs emc2, one reply said there is no access to offsets in emc2, so if we probed a part and an offset needed to be made, this is currently not possible?
it is possible. there's no screen that shows all the offsets to you in a "nice" format
SWPadnos: looking at the clock, yes i should do the same
sure. see you
we need variables, not a pretty screen, or make the pretty screen if it helps us
morfic: If you want to use EMC you need to work a little different
same as with most open source stuff I spose
you want to get it up and running without a whole bunch of time pressure
assume support is going to take a few days
and you should be ok
what are you EMCing?
morfic: how goes the Linux battle with the Boss?
rather interesting machine. http://www.youtube.com/watch?v=BPGsMDM_UPU
only X, Z and C?
the image-to-gcode. it works well?
elmo40: there are settings which depend on the rate of the grayscale colour.
The depth is less for light places of the image, and so on.
so a black and white bitmap is the best. that makes sense
3D is possible? nice
I thought it was mainly 2D stuff
like circuit boards
elmo40: A so-called `2.5D'
so something like this would make interesting Z values? http://robson.m3rlin.org/cars/wp-content/uploads/2007/03/porsche_911_gt2_01.jpg
If you choose proper settings, yes
Axis, and some module written in python pl needed, `image.py' or something
I read a non-english document about 'image-to-gcode' console command
image-to-gcode porsche.jpeg > porsche.ngc
something like that
I am not on the machine atm, but is the command still available?
I guess pyVCP isn't being developed anymore? http://wiki.linuxcnc.org/emcinfo.pl?PyVCP
last posting was '07
elmo401: sure it is, it's just included in emc2, no need for documenting it in the wiki anymore
probably python image library
MarkusBec_away is now known as MarkusBec
MarkusBec is now known as MarkusBec_away
MarkusBec_away is now known as MarkusBec
MarkusBec is now known as MarkusBec_away
Has anybody a good solution to measure the distance automatically from the workpiece to the cutter for example with a laser distance measure?
there is no good solution
depends on material, cutter type, conditions, speeds
what do you want to cut?
i am thinking about automatization the emc2 where i possible can to do work steps not manually
tobs: to "zero out" the tool, right?
I thought abut using a digital TDI with the data cable connected to the PC
more like this...When the mill staarts it has a position but the software don't know where. So endswitches for the table x and y and z axis and then the workpiece distance depends on the workpiece itself and the diameter and the lenght of the milling cutter
Yeah, "zero out" the height of the tool
but i want to automate this process off jogging to the workpiece and touching off
to the top of thw workiece
[09:18:37] <Jymmm> http://www.thinkgeek.com/stuff/41/moodinq-tattoo.shtml
I have the endswitches connected. How big should the pullup resitor be?
300-1k ohms ish
what kind of input? in the old days we used 4.7k for TTL and 10k for cmos
and I'd err on the high side because that's the failsafe condition
i have connected the switch to 5volt
a push button connected to 5 volts and ground. and to the parallel port for input for emc2
you shouldn't need 5v at the switch, just 0V and the input
so when the stch is open, the parport pin reads 1 because of the pullup resistor, but when the switch is closed it reads 0 because the switch pulls down to 0V
right this is the actual connection
so any resitor from 300-1k is ok for that..?
as pull up
or you can do it the other way, with a pullDOWN resistor and a switch that pulls to 5V, but my way is normal
I say 4,7k
but I don't really know the spec of a modern parport, so maybe herron's value is modern
noise immunity can be better with a lower value
<elmo40> morfic: how goes the Linux battle with the Boss? <--- not much of a battle at all really, it'll be purely a matter of available features being sufficient or not
is the map on linuxcnc working for anyone?
JT-Dev: it worked for me last time
I just tried it from two different computers this one and a windoz one and no flags with firefox
it works here
just give it time to load all markers
took about 20 sec here
MarkusBec_away is now known as MarkusBec
JT-Work, same for me - wait a long time and all I see is the map with no icons
I get 3 flags with IE but none with firefox
what about chrome? I'm trying that on XP lappy and liking it
elmo401 is now known as elmo40
FF is okay on XP usually tho, apart from being a memory hog
same deal with SeaMonkey - no flags at all
hi ho hi ho it's off to work I go...
time to register at linuxcnc.org now I don't have to click "Nothing (yet)" in the poll :)
duh, I didn't need to join to vote
morfic: too bad I couldn't help. but I am in Canada ;)
MattyMatt: lol. no, you didn't
I'm telling /. there's no Apple option
should there be?
leave that for the fanbois to decide :)
Axis on iphone would be cool
it's OK, I donned my bulletproofs before saying that
I use a high power rifle
I'm in UK. when the bullet crossed the border it was sapped of 22% of its energy
I thought it was only 17%
Vat = 17.5%, duty = 7%, so it's 24.5% atm
no wonder things in the UK are so expensive
not like you make anything anymore!
everything is imported
even the Beer :-P
we get the zero defect TFTs, because apparently we complain the best
that is a plus
and of course we pay the most :p
at least we can buy at euro prices now, with only the shipping from Germany to worry about
wow, people love milking people for money...
even a firmware update is $10 !
[13:12:44] <elmo40> http://www.kellyware.com/purchase/index.htm
yep, and on an island you're a captive audience
+ shipping :P
it's a service
not everyone has a jtag cable
bgates made his money selling roms
and their site hasn't been updated in over 3 years... http://www.kellyware.com/links/index.htm
a few old links.
2007 is roughly when I decided I hated php too
I quite like that idea though. if it had eth & usb it'd be up to date
the firmware update?
a real time stepper controller
so the PC doesn't have to do the real time stuff
I presume the firmware update service is for old happy customers
(C) 2001 on the board
SWPadnos: quick question, I assume you are logged on?
hmm.. ok.. testing FF here
in chrome it worked
the map options doesn't show up unless you're logged in
without beeing logged on, I see only 3 flags in FF
yeah, but the link works nonetheless
oh. I haven't tried that
hmm.. in FF it doesn't load the pins
ok, not logged in, I get the 3 event pins
logged in I get no pins
my only guess is that FF craps out cause the list is too big
or JS is turned off?
nm. you wouldn't get the 3 event pins
alex_joni: lol, list too big
I wonder if there's a default JS setting that limits memory or something
SWPadnos: I get an xml not ok when I try to load the xml directly (in FF)
js_buffer char[MAX_BUFFER]; // 256];
line number 8982
alex_joni: I got a 10.04 rtai patched kernel to boot, but I have to add 'nomodeset' to grub
ah, 1580 garbage court
it's in china apparently
it's in Chinese, apparently :)
city: w, state: q
kinda seems there are still some bugs in the rtai patch for 18.104.22.168
alex_joni: here in opera it doesn't work
micges_work: working on it
now it should work imho
works in FF, but takes a pretty long time
I am using IE and nothing came up
been sitting for 10min now. still blank
elmo40: try reloading and having some patience.. IE is pretty crap ;)
logged in as well
IE craps out here.. places about 6-7 blue markers then dies
* alex_joni sighs
can you turn off the pin shadows?
SWPadnos: no idea
it just seems that that alpha blending must slow it down a bit
the map displays fine for me. it took maybe 20s to load
mozmck: are you maybe using KMS ?
I notice it's on by default on Lucid for: Ati, Nvidia and Intel graphics
22s all appeared, Iceweasel
I get this in IE here Webpage error details
Message: Invalid argument.
I got about 20 flags then the error
the map's almost a match for pop density, except there's a hole centred on Nigeria. is that because their registration emails get bounced? :)
[14:15:15] <alex_joni> http://gmaps-samples.googlecode.com/svn/trunk/manymarkers/randommarkers.html
here's a page to test your browser
alex_joni: yes, I think karmic uses it by default as well
use 920 like linuxcnc's map
takes about 3s here on chrome
what are the green bits on the map? around alaska etc
7-8s on FF
KMS is for eye candy and seems to cause lots of problems as far as I can tell.
30-35s for IE
especially with rtai. same machine boots fine without rtai patch
[14:17:31] <frallzor> http://pici.se/p/large/GtiaHHPaE/
starting to look like something now!
nullarbor plain, mongolia. only common factor I can think of is Coca-Cola free zones
wow, wasn't it just a 256 users on the map a few months back?
I don't recognize the vast majority of those names
the web bbs obviously attracts people the mailing list doesn't
I avoid mailing lists these days. no pop3 account
or a ton of other free webbased emails
yeah I should get something better
a very very approximate count of all the unique email addresses who have posted to either emc list since 2004: 1520
just don't use yahoo
fastmail.fm seems good - that's what jmk uses. it is almost free.
* alex_joni likes gmail
they have an imap server that listens on *every* port so whatever your company firewall lets through will work!
it does threaded view, you can use pop to get your email, etc
cradek: ha, that's nice
I can set up one of the accounts on momma's ISP
alex_joni: and it gives google more of your content to analyze, the better to pick ads for you.
with a throwaway username. I used up my real name on my own account at the same ISP :p
* MattyMatt sings Like a Rolling Stone
cradek: that's true unfortunately
but adblock works pretty good
bbl, going home ;)
when they have collected all the data they can, it's inevitable that google and facebook will turn evil.
they're not already?
frankly I'm not sure
would we even be able to tell right away?
:) I like adblock for sure. I forgot how many ads and clutter were out there until I used a new install without it.
I doubt it.
IE only showed 12 or so pins on the map.
*phew* 3 cables hooked up to connectors now
whats a nice way to connect cables to steppers with cables only
solder with shrink-wrap?
whatever it is called
not the write-up I would suggest... http://lafox.net/shop/content.php?ware_id=3492
but still, EMC is advertised in Russian :)
the latest CAELinux uses 8.04 LTS.
maybe I will install that, rtai kernel and EMC2 on it.
because my machine is not only a controller(which is 20% of the time) but also the CAx box (79% of the time)
the 1% is for IRC and listening to streaming audio when I get bored ;)
I must have done something wrong trying to part off using G95 and G96 together as a race track condition came about as it neared the center of the part and my feed rate was about 180IPM
maybe LinuxCNC needs to use CAELinux as the base... One issue, it is 64-bit. Is EMC2 64-bit ready?
feed should have been constant. but RPM should increase
to keep the same chip load
I don't think that's right
as the rpm came up so did the feed rate to keep up
yes that's what you want
I bet you didn't specify max rpm (D?)
0.005 I think
Administrator_ is now known as aa-danimal-shop
tarzan is now known as robotito
hey did you ever figure out why you had more ferror in one direction than the other?
since I'm gonna be nick aleted :D
hey everyone :P
seems like it should have topped out at .005 * 2000 = 10 inch/min then
that's what I thought too :)
is your spindle velocity feedback right? you don't have minutes/seconds confused do you?
it seems to be correct for normal facing operations using css
it's a fpr issue, not css
but I might be confused on a lot of things
32770 float IN 0 motion.spindle-speed-in <== spindle-rps
ok, I'll look at that this afternoon
check this input
when I get back to the other shop
Anyone know if hostmot2's stepgen has a velocity mode?
The docs do not seem to mention it.
the encoder does
It does, not sure where it documented
I see a velocity-fb
(Float, Out) Feedback velocity in arbitrary position units per second.
[16:17:24] <JT-Work> http://www.linuxcnc.org/docview/html//drivers_hostmot2.html#r1_13
Vaguely remember someone using steppers with linear scale feedback so they needed velocity mode
Yes, but velocity input command?
how does the machine correct itself if there is an error between stepper and linear scale?
see section "stepgen"
elmo40: acts like a velocity mode servo...
cradek: Thanks. I see that that is for the development version, would it also apply to EMC 2.3.5?
here is the current one http://www.linuxcnc.org/docview/html//man/man9/hostmot2.9.html
OK, thank everyone.
How / Who / What needs done to get this into the Integrators manual?
I have question about 7i65
how can I use it with emc?
Write SPI support?
Is that a Mesa card?
so writing hal driver that comunicate with 7i65 by spi
Yes 7I65 is 8 channel analog servo interface
terrylm: you can bug me to do it
but where spi will be connected to pc?
JT-Work: Bug bug bug... or is it something anyone can do, like the wiki?
The HostMot2 firmware has 2 SPI interfaces
no, you have to have commit rights to add that. however if you e-mail me the missing text that would help me get it done.
so 7i65 must be connected to second 5i20 port and hostmot2 spi support will be enought
Because SPI devices vary so much. I think the way to do it is basic data transfer support in the driver
and put SPI device specific setup and data munging in a HAL comp
pcw_home: do you have any docs?
Only the regmap file, but i do have example setup code for the 7I65 for example
pcw_home: would be cool
we thinking about using 7i65 in many areas if it will be doable in emc
Also forgot, the 7I65 uses muxed encoders like the 7I48 so Jeplers patch for muxed encoders needs to be applied
can you send me regmap and sample code to email?
Yes, but may take a bit, kind of out-of-it this week, bad cold
oh sorry to hear that :|
skunkworks: you around?
Cool! Just got a Tiel Mobile!
Now to call M-TV... "Please M-TV, PIMP MY RIDE!"
[18:01:21] <Jymmm> http://images.craigslist.org/3n83k73l95Y55Q35S2a3v5f30892912001a0b.jpg
Optic: do you still have a ULS 25PS?
i've been glancing at http://www.andrewkilpatrick.org/blog/?page_id=914
i have a 25PS sitting next to me humming away
it has its original boards and controllers
but the COM port doesn't seem to work (?)
i'm not sure how to confirm this
ours has none of the original electronics :)
just out of curiosity, what are you using for an exhaust fan?
there's a giant exhaust port that we've hooked up to shop exhaust :)
we don't have a shop exhaust, we have a furnace blower hooked up with a whole terry-gilliam-Brazil sort of ductwork extravaganza
the machine was demonstrated to be working when we picked it up the other day, so i'm sure it's all my fault
the machine was working over the cyntronics port of course, not the COM port
are you using CorelDraw?
and i've been trying to do COM-based printing from a Windows XP machine
no, i'm just using the printer driver plus generic programs like word, notepad and mspaint
i am not a windows person
presumably the printer driver should work with any program that has a print button
but never does the machine register anything in its "buffer"
heh this is kind of pointless since you've never tried the original firmware
we just run the steppers from emc
can i modprobe the emc kernel modules
hm, nevermind, i'd have to do some circuits first
* kanzure goes back to fiddling with windows
i wish printers had some sort of "ping me" feature to confirm that the connection works
Hi and good evening
is G64-P also in 2.3.5
ther is no example
for full syntax
is this wright
or G64 P 0.05 -> for 0.05mm tolerance
for 0.05 user units of tolerance
does any gcode set this back?
or is this only modal
till the next G00 apears
when you start EMC the default is G64 with no P tolerance
otherwise it remains until you change it AFAIK
sealive: it's modal until the next G61, G64 Pxx or G64
and M2,M30 or other program stop/abort
ok so i can change within programm
what is the differencd bitwean G61 and G61.1
if i go exact path i have to do exact stop
one's exact path, one is exact stop
if you have succesive moves in the same direction, eg
exact stop stops at each point
exact path doesn't stop
but for any other cases they behave the same
I was thinking of corners and didn't think of a line
so what is the best way to start the programm in EMC2 on a stepper mashine G17 G21 G90 G40 G64P0.05
if you want circles in the XY plane, millimeter units, absolute motion, and a 0.05mm tolerance, then yes, that looks good
There is a default behavior where the tolerance is just zero and you don't need to point it out at all.
if i do nothing what does the mashine if i programm G17 G21 G90 G00X200 does it stop exactly at 200 by 50mm/s and 20mm/s²
you should get an error, unless you have previously specified a feed rate with F<something>
It reduces the speed so as it is able to follow the exact path
G00 does not need a feedrate
Why i'am asking
i want to try out the max movement and the max speed og my littel new mashine
Fedrate is needed by a complex reason. When you think it is not needed by the logic of the machine, you set some *optimal* feedrate for the case for machine to stick to
oh right - missed that :)
from home with G00 to max -0.1 Y then to max X to min z tthen §d back to home
g0x200 will move to X=200 at the fastest speed/accel it can manage, subject to the feedrate override settings in AXIS and HAL
is the hal gererated by stepconf
ok, so there should be no adaptive feed override connection
are here some Developers of EMC2 ?
yes, there are
i got a issue
ask the real question. someone will answer if they can
is it posible to make a drop down where the user can specifi the editor?
I think there's an ini setting to specify the editor (for AXIS at least)
in stepconf it overits it to default gedit
ther is no gedit
i use mousepad
if you're on an Ubuntu install, you should have gedit
you could make a link: something like /usr/bin/gedit -> mousepad
(using the shell, and you only need to do it once)
as a batch?
no, one time at the command line. like copying a file
use the "ln" command
ok woudt this stay forever?
it will make it so that any time you type the command "gedit", you'll get mousepad
unless you install Gnome , which would try to put the real gedit there :)
i try it out thanks
BB good night and thanks for the help
ries_ is now known as ries
Hi guys; everybody healthy?
no I died
I need a math lesson I believe, what of archivist?
xkcd is funny today
he fell asleep at the beach and the crabs got him
I'm making a case headspace guage, and need to calculate a spiral of decreasing diameter. Havn't seen xkdc yet todayt, darn.
do so before the day is out
what is xkdc?
I have a tapered hole drilled from base diameter (0.4695") to the base of the shoulder diameter (0.417" at 1.51" depth, plus a neck clearance hole deep enough to find it on the lathe. Or mill if I turn it over.
xkcd, a stick figure comic, link off /.
Now I need to cut the 28 degree shoulder, starting at shoulder diameter & depth, ending at mill diameter and 1.664" when x&y=0
shoulder diameter is .417" - mill radius of course.
[19:56:54] <EbiDK> http://vimeo.com/10479779
Nifty. Inkjet+optical drive+pen==CNC plotter
I'm thinking I should again do circles, with z going down about a thou per circle, with the x decrement a function of the feed, and let the angle take care of itself.
Or is there a better way?
ball nose endmill and then do exactly what you just said
this weekend aa-danimal-shop, this will be all done! http://www.pici.se/p/large/GtiaHHPaE/
the corners of the shoulder must be sharp, ball wont do it, hence the very fine feed
I'll go see what it can run up on the calculator, it can't be that far off if
A bit of Ocode and you can program it
frallzor, that looks great! i see you're using a touch screen, huh?
i know the start depth & diamter, and the ending depth at what is effectively zero diameter. Yes, already using the o code etc.
will try to get touchy running on it
its a bitch since I cant jog at all and cant fit an expansioncard in that box
gene: can't you do it on a lathe more easily?
frallzor: USB jogwheel?
not really. there are some devices that have a round knob but they are not jog wheels as we know them.
they are made for controlling video editing software
as long as i can jog at all I would be happy
like. keyboard support!
oh not this again
frallzor, touchy will not get a keyboard interface. end of story. would you like to choose a different UI?
touchy is explicitly intended to be a user interface that uses a touchscreen and external physical controls instead of a keyboard and mouse
cant recall, was there some jogstuff in the interface?
you attach a jog wheel, and I think there may be jog buttons on one of the UI pages
you use the touchscreen to select the axis and increment for jogging
ah but then its all good
just need jog to align stuff
not do major movement
cradek, is there a UI tab with jog buttons?
the increment setting controls how much motion you get per click of the jogwheel
wouldn't a USB trackball work I thought there was a HID HAL interface
pcw_home: if they have a count output, they would work
does a pendant need a port of its own, or could it be linked to a single one used for all somehow?
pendants aren't special in EMC2 - all you need is sufficient amounts of I/O
the issue is the lack of I/O
um. well then you need more I/O :)
and I couldnt fit the extra p-port in my case =(
are you asking if you can share pendant I/O with e.g. step/dir signals?
well, any I/O
some things might be shareable, like a probe input and something else
but then again, if the cat steps on the pendant while you're probing, you won't be happy with the cat
or the pendant
how many inputs would a normal pendant need?
there's no such thing as normal
and that doesn't need to go to EMC2 explicitly, it could just turn off the motor drives
(no trying to be obtuse, but that's like asking how big a car is)
where to hook the mpg-signals to then?
2 inputs for quadrature
then switches for axis & speed
[20:27:34] <tom3p> http://wiki.linuxcnc.org/emcinfo.pl?Hooking_Up_A_MPG_Pendant
if you want an MPG, an axis selector knob (for 3 axes+disabled). and a selector for several jog increments, you'd need 2 for the MPG, 2 for the axis selector (4 options, use binary coding), and 2 for the increment selector (for 4 increments)
you don't need/want axis/speed controls on the pendant for touchy
those are on the screen
so it really depends on what you want on the pendant more than anything else
I'm too tired to dig up the touchy docs url again, sorry.
Otto in Wall-E
guess touchy will have to wait then, cant get enough inputs =(
the touchy goes on a pendant? neat
no inputs for controlling the mill, no touchy
if you can afford a touchy, you can afford a pci input card
but I cant fit it
Just one parallel port?
no pci slots free?
a serial port free?
1 only but even stripped p-port card stops the case from being closed
hmm serial ports I have
I'd do USB
ISTR EMC can use serial port handshaking lines as I/O
serport only has 4 inputs. to run touchy you need at least 5.
would usb > p-port work for this stuff?
since its not as critical latency wise
I wouldn't bet on them working
using the board and wire from a gamepad would be cheaper
but you never know
counting quadrature is time critical
I'd delegate counting to the mouse chip
2 serial ports would give you 8 more inputs
serial mouse :)
* MattyMatt has
[20:35:56] <frallzor> http://texasmicrocircuits.com/
these guys makes nice pendants for usb
wouldnt be too bad to get one of those working
cal is now known as Guest45235
maybe this uses the 'gameport' if you got one and IF thats whats used here http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Simple_Remote_Pendant
How does one take a screen shot of an EMC display so it can be posted into an e-mail or the like?
Ahh! IT's there! Thanks I'll give it a go!
Jeesh That works too! Thanks tom
Pitching the merits of EMC ;-))
for $350 you could butcher a Nin DS for the touchscreen
or effectively just rehouse the whole DS
put the extra screen on the back, for tamori-on style performance milling
[20:49:03] <MattyMatt> http://www.youtube.com/watch?v=N6tLRCDqJ2c
Guest45235: alt print screen will capture the current window
tom3p: beat me to it
* JT-Work should learn to read up :)
altPrScn doesn't work for me, but then my £ key doesn't work
it probably all works on my emc machine :)
libxkb conflict stops the workrounds working. pesky nvidia X
££££££££££ yep all works here
still dunno why wifi isn't working. Ubuntu has had support since Grumpy Gerbil
for my RT2560 card
it shows as PCI card, but not in iwconfig
yeh a lot of apps dont play nice with gnome & v/v. i just found out that ESC 0 works around F10's failure in MC.
velocity filter widget changes http://pastebin.org/130736 http://imagebin.ca/view/CI0KkEX.html
two lines before and after the curve describe areas of maxPosVel & maxNegVel.
also the 'handles are bounded by neighbors and edges
ah is this like the IPOs in blender? I thought you was adding a bezier G code :)
that would drastically shrink a lot of files
dunno IPO but its governs a velocity using a bezier curve. i was using lines, but had a speed 'jerk' at each 'knee'
and bezier-ish code exists for emc2 (someplace, forget where)
yep that's exactly the reason why blender IPOs (drawable animation control signals) have bezier option
I'd look it up, but they've changed the name for the upcoming 2.5
initial purchase offer ? (like stock)
Inter Polation Object
^ seems that's accurate. pesky Dutchmen
hooray for openbooks http://en.wikibooks.org/wiki/Blender_3D:_Noob_to_Pro
it took me 1 week to start my first model, and 1 more week to finish it. you need to develop muscle memory
in particular the mouse buttons feel back to front
I should do a "Learn in 11 mins" vid for YT
cradek: I have net spindle-velocity motion.spindle-speed-in <= hm2_5i20.0.encoder.02.velocity
does that give rps or rpm?
(float out) velocity: Estimated encoder velocity in position units per second.
is it right when you meter it?
good night all
mmmmm sexy .... http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=620-1166-1-ND
cradek: seems to be correct but just a little off atm
heh, look at http://www.kernel.org
Are there any here that are familiar with TUX-PLOT?
Not me. I am only answering to prove that there are people here to answer.
It seems to be a possible Cam and certainly an HPGL utility.
that would be g-code cam
restricted to converting "art" etc from Vector drawing applications
where do you find tux-plot?
I htink I saw it someplace
Does it do G-Code ot HPGL?
search engine "TUX-PLOT
something about a plotter drawing mickey mouse comes to mind ...
[22:49:48] <andypugh> http://www.securetech-ns.ca/camm-linux.html
no eps ps pdf etc to ?g-code perhaps, that is the promise, but I can't get it to open.
It looks (from the screenshot) like it uses PyCAM so you might want to just go straight to that.
Guest45235 if I could easm files to open in Linux I'm sure you'll be able to do whateve it is that you're up to!
it uses pstoedit to convert files to HPGL
HPGL is not a lot nearer to G-code than Poscscript is, though.
I thought Linux could plot HPGL
it would be useful to some
It probably can. What was the question again?
is this to say there are no linux plotter drivers?
FWIW I have written some Matlab
I have not seen such drivers
well I haven't lookedi n years but let me just have a little look see what I'm looking at now doesn't seem to be panning out anyways
xfig outputs HPGL, but it will not convert an imported figure. How is that?
Results 1 - 10 of about 674,000 for Linux HPGL. (0.33 centons)
not really a question that needs answered
There are MANY graphic apps that will only import or only export certain formats.
So I have discovered
Jymmm yeah but if you look hard enough you can find some filter someplace that'll export to just about anything else
like pstoedit ;-)
pfred1: if you look hard enough you'll find anything to do anyhting.
and I'm pretty sure HPGL is well supported by Linux
If you find an "Art" application that "prints to plotter" I'm listening!
it wouldn't stun me to learn that gimp can read HPGL files
Photo shop plotted is the ideal ;-)
I can pastebin my STL solid model to HPGL / Postscript code if you want? Octave is a freeware Matlab code interpreter.
It does it all in remarkably little code.
Andy You are beyond me
[23:02:22] <andypugh> http://www.pastebin.org/130806
yeah he's beyond me all the time too
it looks to me you can just cat an HPGl file to lp and it'd happen
[23:04:15] <pfred1> http://lprng.sourceforge.net/DISTRIB/RESOURCES/HPGL_short_summary.html
That code will just run in Octave and convert an STL file to HPGL on the serial port.
[23:04:37] <andypugh> http://www.gnu.org/software/octave/
Guest45235 whats wrong with this? http://www.gnu.org/software/hp2xx/
In my case? I wanted something to run on my Mac and STL isn't a vector graphics format it is a 2D-solid definition format.
(errr, 3D solid)
pfred it seems that if you have an HPGL file, things are easier
* pfred1 synaptics hp2xx .....
Andy, I should just copy that pastebin file to a document until I learn enough to use it?
Guest45235 well if you don't have a file then what is all of this about?
Guest45235: Possibly, though looking at it I am not sure it is using HPGL, I might have used RDGL. It is years since the plotter came out of the cupboard.
someone please remind me what day today is?
pfredl I would like to MAKE the HPGL file! The many other vector or bitmap forms are easily accomplished. Raster format prevails Time moves on
Roland is close!
Valen well it is still April Fool's Day here!
Guest45235: In that case, just print to file. Take your vector image in Inkscape or whatever and print it to a file using the HPGL plotter driver, and Voila! a HPGL file.
andypugh one of my fave methods of making a PDF for sure
Andy Inkscape will not output to a HPGL plotter.
I was advised that "older versions used to "
Guest45235 ah, that is what a print spooler is for
I suspect it is a case of installing a plotter driver
If you find one, I'm all ears. ACad 10?
yeah create a bogus print spooler
when you print to it it'll never job then just go into the spool dir and grab the file!
There are several for Windows such as Corel Draw
Guest45235 well this ain't Windows we do things a tad differently here
as in we don't keep on reinventing the wheel poorly
Yes we do :-)
pfredl If that were the case, I could just print to file as I am now, then doing conversion with the pstoedit
andypugh the ones who have not learned the way yet
Yes, print to file in Postscript, then use pstoedit
Yes, that is how
andypugh those are the projects that never get past version .02
Inkscape does that, I have it open now
yes, That isa how I use it
It = Inkscape
OK, so I am now joining the "what was the question again" team :-)
A bit clumsy, but Eagle works too!
what is so clumsey about Eagle now?
The question was how to get Tux-Plot to open ;-)
pfredl images on Eagle are a bit of a stretch
Guest45235: I take it you followed the instructions in Readme.1st?
Further the question, any experience with the vector file to g-code conversion from the same package
Sort of a 2D Cam
Yes, Read, Hopefully done. The Icon is on the desktop, but the Gui will not open
Guest45235 try starting it in a terminal to see error messages
Start it from the command line and see what errors are shown
Guest45235 no, just years of practice ...
And April Fools seldom differ
* pfred1 has been Linux 27/7 since 1996
I think I have been using Unix for over a year now. That's scary. Why do I keep finding improvements to make to the machine rather than making stuff with it?
andypugh well you're a fast learner then because you had the right answer
(Today I added some PYVCP buttons for tool-changing in my lathe config because typing M6 T1 G43 was getting me down)
With the bin folder open, I must say I do not know which file must be executed
aa-danimal-shop yeah my system clock is skewed up!
good idea andypugh
lol pfred1 that has never happened on my windows boxes?
Guest45235: Is there a scripts folder?
aa-danimal-shop I bet you never compiled a kernel for any of your windows boxes either now have you?
Guest45235: Alternatively, look at the desktop shortcut and see what file that is trying to run.
never had to, that's how good they are!
aa-danimal-shop more like couldn't if you very life depended on it
You can compile a MacOS kernel if you want to.
andypugh yeah i don't see that day ever arriving ;)
i know, just stirring the pot. i dont even know what a kernel is, other than corn
Guest45235 some scripts have to be hand edited in order to run on your specific system
Guest45235: Ah, it's Python. What happens if you just type "python" in the terminal winow.
pfred1: Bet you *I* have.
you start an interperetr
typing main.py returned five lines of "This doesn't work" ;-(
Jymmm so you're a Microsoftie are you?
You do if you have one to start. I am wondering if that is the problem
$ uname -a
Darwin Eve.local 9.8.0 Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386 i386
Jymmm Darwin award winner I see ...
Guest45235: If you type "python" do you get a python interpreter?
Darwin cube 10.2.0 Darwin Kernel Version 10.2.0: Tue Nov 3 10:37:10 PST 2009; root:xnu-1486.2.11~1/RELEASE_I386 i386
[23:33:20] <pfred1> http://www.darwinawards.com/
OK, and if you cd to bin and type python main.py what happens?
andypugh green ooze pours out of your ears!
>>> python main.py
File "<stdin>", line 1
SyntaxError: invalid syntax
(I don't actually know how to invoke python...)
chmod +x it then ./ the file
press ctrl + d
he is in the python shell
get back to bash then do python main.py
yes trapped by a snake at the moment
nah you probably are supposed to flag it executable then run it
press ctrl+d it will exit the shell
to run a python program in linux you call it like that
I am a python programmer
./main.py: line 24: import: command not found
from: can't read /var/mail/qt
from: can't read /var/mail/camm2_new3
./main.py: line 28: syntax error near unexpected token `('
./main.py: line 28: `class sub(HPGL):'
Guest45235 install qt
its a widgit lib
sudo apt-get install python-qt3 python-qt4
unless there's a user on your system named qt
I think I'm going to have to DL this stuff just to see whats really going on
do I need to restart?
Guest45235 what are you actually trying to do?
./main.py: line 24: import: command not found
from: can't read /var/mail/qt
from: can't read /var/mail/camm2_new3
./main.py: line 28: syntax error near unexpected token `('
./main.py: line 28: `class sub(HPGL):'
Valen they're tryinf to run an app called tuxplot
ahh and its not in the repos
where did they get it from
Valen, This application (Tux-Plot) does not display the Gui
Valen good Q I can't find it yet
where did you get it?
all I've found so far is this: http://www.securetech-ns.ca/help.pdf
see time stamp 18:49
thats your local time
I joined after that
Since starting Python, there is an annoying beep with every key stroke. HELP! ;-)
your not still in the python shell?
No I closed down the terminal
this is shareware
they want money
xchat beeps on every key sometimes. I think it's just Insert mode or sth simple
AFTER 30 DAYS USE PLEASE DONATE $60/US TO HELP FURTHER DEVELOP THE NEXT RELEASE
to further develop their reefer addiction
Ok Insert off ! thanks, There is so much to learn. And I have big thumbs!
Nova Scotia is a long way from reality ;-)
Any comments or support questions please direct to the email address below Contact: email@example.com
I sent,,,,, no response yet
[23:53:16] <Valen> http://www.3x6.nl/inkscape_hpgl/Linux%20inkscape%20save%20as%20HPGL%20file%20for%20pen%20cutting%20plotter%20extension.html
you are making a drawing and want a hpgl file out of it is that right?
Valen That is the procedure at this time psto edit, then distill!
so what are you trying to do then?
The topic was really only brought here for the g-code conversion. but..I got distracted sorry
What would be nice is to have a useful vector graphics application that output HPGL format.
* pfred1 needs to design a bipolar stepper motor driver
I like Compumotor S Drives. Plug and play!
no design time, and they show up cheap!
I'm going to fool around a bit more with the one I finished up earlier today but I don't have much hope for it being too useful really
it runs but slowly now
while i was rooting around in my junk I found another bipolar motor I'd forgotten i had it looks OK
twin stack nema 23 272 oz/in torque
mint in box!
yeah i have to build a driver for it