re visolate, look at hos paper, i think fenn was looking at these voronoi paths http://www.mit.edu/~vona/publications/Vona_Rus__2005__Voronoi_toolpaths_for_PCB_mechanical_etch_Simple_and_intuitive_algorithms_with_the_3D_GPU.pdf
he makes some weird boards
no i was looking at martin held's paper
this is better though, because there's actually CODE
ah, i just remembered the voronoi part
some different voronoi code sources http://objectmix.com/graphics/133575-simple-voronoi-programme-c.html
the standard 5 axis kins will move the machine as jmk describes
i am trying to modify the kins and add a geometric compensation
that is way oil on the table - I had the timing set to pump a lot of oil - I have reduced the volume
stustev: does the model of your machine also have this kind of error?
if it were modeled (and exaggerated) it would be easy for us to work on it without the machine
wow, that is a kick-ass indicator setup
did you validate and/or comp the X and Y ballscrews? seems like if their pitches are a bit off, or they are inconsistent, you could get these kinds of errors?
hum, I don't understand why the voronoi edges are better to mill than the normal trace outlines (that link of skinnypup's from earlier)
shorter distance to mill, maximum distance from trace edges, thicker traces
err - max distance from trace centers
cradek: I don't know if the model has this error. I would think not as the model should be built physically accurate. I guess I could build it with error and then work with it.
for a mind-blowing (or mind-numbing) time, look at pumakins
yes - I have comped the axes - linear and rotary
that implements the generic transforms needed for offset rotation of joints
I agree - linear and/or rotary error could cause this type of error - that makes it difficult to determine which physical error is causing the motion error
the problem I have right now is that I cannot get any error correction response with my geocomp
so A rides on B - B tilts left/right and A tilts front/back?
are you having a har dtime measuring the actual offsets?
When I get error correction response with geocomp and have it a good as possible I will have to look elsewhere for any improvement - if any improvement is needed
the error values? - yes
jus tso I'm sure - when you say "error value", do you mean the offset between the axes of rotation?
I have tried values from -.010 to + .100 values and get the very same measurement with all values
you have at least a total of 60 degrees of tilt on both, right?
hmm - A wasn't that much, was it?
I have tilt as follows B axis -30, +20 A axis -20, +30
ok, that makes it so you'd need a calculator :)
for a total of 50 degrees tilt on the A and B axes
I have been using +-20 for all measurments
pivoting 60 degrees will swing the tooltip one "effective radius"
bbl - thanks
so you do two pivots with W fully in and fully out, and get the effective radii
I see what you are saying now. If the adjustments don't give you any results, the math must be wrong
alex_joni: wake up over there
I just going to install Ubuntu 8.04
Is it will be possible then to make 2 kernels: one with realtime support, and other without it?
and swich between them as needed?
if you install Ubuntu 8.04 from the standard Ubuntu install CD you'll get a regular kernel
then installing emc2 (using the install script) will pull in a different (RT-patched) kernel
you'll then have the ability to chose between the two
really I want to experiment with kernel recompilation
but I do not wont experimeent with EMC core...this time :)
lean about your boot manager before you start fucking around with kernel compiles
kernel recompile will be a pita :)
with emc realtime yeah but in general its easy if you know your hardware
and custom monolithic kernels with just code for your hardware will boot hella fast
no, I meant the ubuntu way of compiling a kernel is a bit of a pita
if you do it the vanilla (kernel.org) way, it's pretty easy
you prob wanna get familiar with how your distro handles kernel module loading to, heh
oh, yeh i always use kernel.org sources
Assargadon: ubuntu kernel sources reside in git
there's a good page about compiling (building kernel debs) from git around wiki.ubuntu.com
alex_mobile: hi alex
hi DanielFalck and alex_mobile
just upgraded to 8.04 here
fixing to take a nap here
just got my nvidia driver set up
read an interesting post on cnczone- 'What causes the occasional run away mill?" under Mach 3
I have a gateway amd athlon 64 3500 to install 8.04 on
no I missed that
probably because it runs under windows ....
where you at alex_mobile ?
are transformer/bridge/cap supplies preferable to switchers for electromagnetic loads? ( dc motors,relays, solenoids)
* BigJohnT yawns
a "good" switcher should be ok, but some prefer linear
At a wedding :)
bored and on irc
odd weddings you goto Alex
i thought it might be the big cap was handy for the spurious loads
thats the idea of a cap (switcher has caps too)
oh, sorry, it read 'a good switcher at a wedding"...
tom3 the real fdifference is in the overload condition, a switcher may shut down, a diode cap system will just droop
and if well designed there is no overload
you can consider a stepper driver like a current regulator. Just like the input to a voltage-mode regulator need not itself be regulated other than meeting certain requirements for voltage and ripple, the same is true for a current-mode regulator.
but maybe for a given volume, or heat dissipation, or cost, you'll find that you might as well get a switching regulator
btw I use a switcher on my stepper system
archivist_ub: good point, this has to go to several amplifiers for i/o ( limits etc)
jepler: yeah, this goes into a closed box, so less heat is good, thx
archivist_ub: practical info is very good news, that it 'works for me' is handy, thx
I got a freebee switcher from a control system its 20A at 24-28 v I found I could adjust to near 30 (Coutant Lambda DRP-480-1)
That's a lot
:) can add more steppers mors axis
i used to get lambdas from a great surplus place in Cleevland, nice
never felt heat from it yet
I have 4 axis at 2.4 A at the moment
apparently mine is 24V/5A .. I think it adjusted up to about 28V
alex_mobile: Which buntu did you say has the lease grpahic overhead? xubuntu?
You can install and use a light window manager or start x alone with any of them.
rayh: I'm considering this for a laptop, then add vmware on top of that to have XP VN's on the same box.
rayh: I had lunch with Patrice Saad yesterday- we were talking about digitizing with emc
Hey that's great, Dan.
rayh: do you have any notes on HAL from the cncfest? Patrice seemed interested in them
The larger issue with a laptop is rtai, JymmmEMC
rayh: no paraport, so that's not an issue =)
I've been working on publishing my class notes but nothing yet.
Xubuntu should be fine
Then any light wm would work. I've tried most all of them.
The download for some of these is less than 350k.
I just don't like the browness of ubuntu =)
sad to say, but true
their whole theme is brown
brown oh okay.
You can change that easy enough. I like blue myself.
There are lots of themes
Plus I'm not liking the dependancys that thar ubuntu does.
compared to debian that is
Sure I've not run debian in a while but I can see that difference.
I got upset with RedHat for a similar reason about 8-9 years ago.
I must be getting older and more mellow now.
Ok course, I like the constant updates that ubuntu has, which debian is oh so slow at releasing. (features wise)
Yep. And the security upgrades really help.
I do have a bit of a firewall here but ...
A couple of years ago, there was a big difference between ubuntu and kubuntu compatability wise just installing. So Im still leary of that
"It's the primary code base... wth?!" =)
I tried K and after 10 minutes didn't like it at all.
Heh, and this $400 laptop uses shared video memory too.... so
But I have 12 days left to return it if needed =)
Most all of my setups are shared memory.
Have you tried to boot the live cd?
Yeah, doens't see my wifi
but I didn't grab the x64bit either
I'm not sure, maybe the 7.x
No, I did burn 8.05 i386
I'd try the stock ubuntu 8.04 and see if the wifi comes to life.
I've got an athalon64 with EMC added it. It works pretty well.
Only USB ports on this laptop, cna't expect much for a $400 laptop =)
but I could always remote into another EMC box too
maybe of interest http://code.google.com/p/wildcat-cad/
dling x64 now
I tried stock 8.04 with Madwifi and it crashed the computer while setting the channel.
I found a mesage that noted this problem, but I found is no chatter about fixing it. Very frustrating.
[17:09:05] <JymmmEMC> http://ubuntuforums.org/showthread.php?t=816780
I have two other links too, but need to do it from installed, not live
I use 32 bit, this seems to be for 64.
I'm going to converting everything to WRT54GL or DWL-G730 so I don't have this problem again.
I may be able to save some power with stand alone Wifi (wrt's) and running Radius and PoPToP on my existing web server.
you're using a pc as an AP ?
Yes, I provide service to my neighbors.
THis is what I picked up... http://newspaperads.mercurynews.com/ROP/ads.aspx?advid=32664&adid=6813831&subid=23166801&type=
Oops, that Fry's link crashed my Firefox., more to fix I guess.
it uses JS, but I'm viewing it in unbubtu in FF
I miss having a Fry's around.
I am on a Fedora 4 system that I have been trying to get around to updating.
why not CentOS ?
* alex_mobile senses some irony there
I know nothing about CentOS, maybe I should Google it?
CentOS == Free RedHat
(just rebranded primarily)
I thought fedora was free redhat
centos comes with added security
fedore is the free red hat
Bugger added security
I do a bit of work on a centos based network. Seems okay. A bit older or dated packages than ubuntu.
I should probably look into it, but I try to keep things simple as possible by editing config files rather than having the OS try to guess what I want, which these newer systems seem to do.
There is more of that than I like sometimes. Takes a bit to figure out how to override it.
Might as well use Windows if I wanted a debate with my computer.
"are you sure"
kirk_wallace: virtual machines are da bomb!!!
"You installed x and it did what?!" NP, just delete the M$ VM file, copy back over the original, bacl up like you were =)
use vista the computer rules you
This laptop came with vista, first thing I did was contact HP for the XP drivers =)
I'm restoring the laptop to factory now, then going to burn (another) set of recovery discs, then blow the thing away and install ubuntu 64, then install vmware and copy over a XP VM I laready have =)
I've seen some chatter about VM's, something else to learn about.
kirk_wallace: I have VMWare fusion on my MBP.... gawd send.... I have one Ununtu64, one CentOS, 5 XP VM's and can copy,backup, restore any of them in the time it take to cp a 3GB file
well some are 5gb, but who cares
Is there a reason for your multiple VM's?
Many things need IE ONLY, so I have one administrative, one for testing, another for play, etc
Wrok computer, so another one for my personal stuff, etc
Thank goodness, I haven't had to do anything with Windows for a long time.
Ubuntu VM is a resource whore though, so I can only run CentOS Ubuntu and one XP VM
i picked up a new box for the family last week with vista and it BLOWS chunks
UPgrade to XP if ya got it =)
* alex_mobile yawns
but this box has an installed image that FACKS with trying to put anything on it
Then fdisk it
or are you wanting to dual boot it?
fdisk from WHAT ???
dmess: You put in any livecd and type in fdisk /dev/sdx
but it isnt seeing ANY live linux cd's so far
have you enabled booting from CDROM in the BIOS?
i'm getting quie pissed off and will probably go get a new drive in the moning to start rebuilding the other dead box
yes Jymmm ive enabled it..
What system is this?
that you bought and won't boot from ext devices
but a friend mentioned something about the SATA config... and i havent found that yet
HP pavillion Slimline s3507c PC - 3 Gb ram 320 gb drive - intel d/c e22000
i'll try again laer
with a 21 inch flat screen 540 + taxes
Did you hit F11, F9, or whatever during bootup?
any one ever done a water pump on ford Taurus??? 1996 vintage??
no but i'll try the taurus has taken up most of my day.. sorry
my van is a '95 with 389 K
all I remember is taurs is FWD
Im running a 98 vintage ford mondeo atm
...and the backend would slide all over the place
he left in that i thought it was only air lock.. but it isnt flowing ANYTHING
is there a hole in the therstat housing gasket?
FORD suck IMO
WHERE the hell is the thermostat???
Follow the hosuse from the radiator to the TOP of the engine block
i havent been able to find any resemblance?
when you get to the end of the hose, you've found it
you can't find the radiator hose?
it has NO way OFF.. is it in-line?
hoses i find fine... still sober
this is a dohc 3 L engine
dunno if that will help
is that the thermostat or temp sensor?
I know it SAYS thermostat, but some get confused
and I dont remember wtf the underside if the hood look like on a taurus
* I don't miss working @ ford *
SkinnYPup: at the plant?
Oh no twisting wrenches years ago
was it just THAT dealership that was a pina?
Oh no just didn't like workin on fords
cars are a pita
i BELIEVE its the water pump.. ther IS NO pressure
gimme a pre 1969 anything and I'd be happy
hear ya there
* skunkworks likes forced induction...
*saw skunkworks turbo pic once*
[20:48:39] <JymmmEMC> http://www.2carpros.com/forum/automotive_pictures/96838_Under_Hood_Diagram_1.jpg
actually - that was a passing fad.. Have not driven it in a few years now.. It requires premium just for tooling around.
Know the feelin sold my corrado bout 3 years ago
and very very hard to drive ecconomically
got a tdi instead
corrola an car pooling
dmess: Trying to figure pump or thermostat? Undo one of your small hoses going to the heater core, turn the heat control to H, crank and see if you have flow at the heater hose
[20:53:40] <JymmmEMC> http://autorepair.about.com/library/faqs/bl207e.htm
...and dont forget to top off radiator =)
You know, I got the whole 50/50 coolant/water thing
as opposed to 100% coolant
since water rusts
on many cars there is a sacrificial anode, meaning a lump of magnesium or whatever that rusts away so the rest of the car won't
sometimes it's the water pump impeller (great idea huh)
mixed with cavitation great idea yes
<wonders if anything is built to last anymore>
credit card debt?
fenn: Actually, not bad if you think about it.... If you have THAT much rust in the system that would take out the rest of the system and waterpumps are deisgned to be replaced
fenn: but I understand what you mean
btw I think it's zinc
[21:28:07] <fenn> http://en.wikipedia.org/wiki/Reactivity_series
if it's an aluminum block, has to be magnesium (or another metal of higher reactivity than aluminum)
fenn: ah, I was thinking cast iron block
alex_mobile: hows the wedding?
wedding? alex_mobile? You got divorced or getting a second wife?
maybe just attending some wedding as guest? Cheering ? :)
I think dushantch has nailed it
but that doens't nearly as much fun as what I was suggesting
but that doens't sound nearly as much fun as what I was suggesting
To everyone it's own, but I never thought divorce as fun :)
there is an old Johnny Cash song that says if you could get half your wishes you would double your trouble...\
dushantch: Well if it was his 2nd wedding day, seems like much of the turmoil is over, and beginning a new life now
which would be a good thing
but I still vote for the later
There's a saying: marriage is a thing that comes after life and before death :)
boy - there are some nasty spyware/viruses out right now. (like xp antivirus 2008)
or backdoors as windows firewall? :)
or just windows
windows update is high on my list of spyware too :)
dushantch: what are you talking about... Windows IS a virus
you sould always use protection before using windozs
destroy all windows, let the clear air in :)
in the UK we had a window tax, that should be brought back in for M$
And what makes anyone think that a "firewall" running on an unsecure OS as M$ is goign to protect you, I'll never know.
but I really hate sometimes when some things are faster in windows when it's set up correctly (like unplugged from network)
dushantch: that makes sense... no network overhead to deal with.
JymmmEMC: Well it's a must if it's going to be safe
and no borked dns delays
but on plain install, FF runs faster and looks better subjectively
dushantch: You could always go for C2 Certification =)
US Gov Classified Level 2
It's not hard, just time consuming and restrictive
hehe, I have to use 1 winXP machine in network for accounting SW and e-banking but it works ok, firewalled like hell, as a NX client
do you use IE ?
and win98 is fast on older machines compared to recent linux kernels
no, no, just those 2 apps
btw, I used IE8 some week ago and it fealt snappy :)
firewallign won't help much. but turning off services you don't need will
there are some known speed problems with image scaling in firefox
it does not cache the scaled image to rescales when scrolling
ah it's on internal all linux network, I'm just closing it down so that when someone with USB brings some viruses they don't make too much excess traffic
hmm, pages seam to load faster, especially compared to FF2.0
btw. are there any SERCOS interfaces that can be used with Linux/EMC?