hm, can you aproximate how much gearing i'd need?
* anonimasu has unit troubles with motioneering
i'll check the mail in a sec :9
i'll guess 3:1
ah that's reasonable
what happens if I ignore it and try anyway?
just an impedance mismatch
it will work, but performance will suffer
so geared 3:1
I have step multipliers on the geckos..
this isnt rocket science
I'm not aiming to push to the limits ;)
I guess everything is rocket science to me.
Like mowing grass.
I love to mow grrass....
but I think about optimal toolpaths while doing so
especially the bit in the middle where your turning radius is not enough
so the main problem wih my setup is the weak screws..
and the inertia mismatch..
the torque should be ok for direct drive
and the machine will perform ok, just not optimal..
it is enough...but you ewill get better performance witha reduction
you cannot turn ballscrews at 6500 rpm
I'm not going to either..
I am hoping for 1200 rpm :)
(with minutiae of Gecko specs ;) )
the 250 KHz step rate is the internal step rate, not the external. The multiplier doesn't change the top rated speed, only the number of steps needed at the input to generate that speed
so you could consivibly run a stepper at 1250rpm?
rps, I think
though it is 10x microstepped on steppers, so it's 2000 steps/rev
so only 125 RPS (7500 RPM)
but for anon, it's half that, since hte 1000l encoders will be 4000 counts/rev
hm, *tries to calc what kind of speed that adds up to
fast, even with 5:1 drive ;)
but the geckos are only specc'ed to be able to do ~3750 RPM with your encoder resolution
you may need to reduce that if you want the motors to move faster
* anonimasu sighs
heh - it's never easy. I have the same encoder res on my motors
if I need to start doing that kind of things I might aswell throw cash for a motenc..
better limit the machine
I suspect people could get hurt if you don't
4kw spindle is the plan
4kw and 8000rpm..
erm. ~4.5 HP
oops - 5.5
(well - 5.3, but who's counting)
I use a 5 hp colombo 3 pahse 400 hz
24000 rpm at 400
but speed controlled by emc
it's pretty good...class 7 angular contact bearings
24 k... SWEET/// i dont care who you are..
wanna see my new toy?
heh - sure
hmmm. the DCC transfer started, but then failed
where's the open bug list?
okey... where's the open bug list?
how ya doin les?
on SourceForge, which luckily doesn't work half the time (so we can't tell what's wrong)
can't seem to send files though
SWPadnos I got somethign for ya...
very cool video... http://mrl.nyu.edu/~jhan/ledtouch/index.html
that's a cool method
I hand't thought about using the junction capacitance that way
check out the video for a cool demo
looking. very cool
you can see some flicker in the array due to the long blanking times, but it's very interesting. thanks
I have used leds for photodiodes
they put out about 2v!
flicker on the screen or the matrix?
les_w This is using LED's as touch sensors
the matrix flickers a little in the video
they're being used as light sensors, not touch
but the closer the finger, the more light gets blocked, so ...
I did a tough sensor gig last year.
tough too really
I dotn see any flicker... could it be the reflection from the palm of his hand you're seeing?
prob just aliasing withhorizontal svan
nope. it's very slight flicker in the LEDs themselves
like les said... scanrate.
and it's still there at the end, when he moves his hands out
les_w yes, svan, a new word for your next patent.
sure - the scan rate and long blanking time make it apparent (in the video - probably not in real life)
slick though...Im jealous
Hard to tell, but it looks like he's using a prefed matrix, but i thought those were common cathode (or anode) ?
common (whichever is the negative side) would be OK
it's almost always easier to switch the low side
hey we got some commit emails!
03cradek 07HEAD * 10emc2/src/hal/utils/scope_disp.c: make zoom work the same way as axis
woohoo! only 8 hours late
has anyone tried halscope lately?
what is it?
what is what?
a piece of debugging / diagnostic software that comes with EMC2, and which would require a working video card to use ;)
I'm in the same boat, at this point
well, with that machine
what's wrong with everyone's video?
my primary video card... cradek, sec
[01:17:47] <A-L-P-H-A> http://ubuntuforums.org/showthread.php?t=189651
you got new cards and they don't work?
they used to work...
old card for me - the one in my smaller tower (Radeon 8500DV)
I believe breezy worked as well
Breezy was fine. Gentoo was fine. Windows was ...
03compile-farm 07Ubuntu 5.10 (2.6.12-magma) * 10emc2head/: build FAILED ; see http://linuxcnc.org/compile_farm/emc2head_slot7_log.txt
we may be about to drop gtk1.2 compatibility
sounds good to me
I can't wait to actually try halscope - It still seems I got into emc at just the right time :)
isn't it about 400 years old or something?
(gtk1.2, not halscope)
sorry - random thought
it's pre-FuzzyFont(tm) technology
and apparently pre-ScrollyWheel(tm)
(the current problem)
ah. FuzzyFont I can do without, but scrolly-wheel, that's important
though FuzzyFont on an LCD can be an improvement
since they're so damned sharp
I have FuzzyFont built into my monitor
a CRT or an LCD?
03compile-farm 07BDI-TNG (2.4.18-rtai) * 10emc2head/: build FAILED ; see http://linuxcnc.org/compile_farm/emc2head_slot3_log.txt
compile-farm: we know, we know
ah, good. it takes a lot of processing power to get LCDs to have FuzzyFonts
les_w: Thanks for your help!
and everyone else too
I think this will end up a great machine
ok, I'm back...
you were gone?
SWPadnos: I think that would be a great idea for a on/fim/off switch
estop - estop!
03compile-farm 07BDI-4.20 (2.6.10-adeos) * 10emc2head/: build FAILED ; see http://linuxcnc.org/compile_farm/emc2head_slot5_log.txt
big red buttons all over the machine for estop.
so what would be cheaper... usign a PIC or AVR ?
AVR is less expensive in the long run
less hai replacement later in life
you can get hair replacement??
I could use some
why does nobody tell me these things
well, people will take your money and tell you that
I haven't really been looking you know
SWPadnos liek you need it
in my younger days I had easily twice the hair you do now
me too ;)
My brain needs more insulation.
les_w: Just shave your head and run for govenor
actually, I got sick and tired of it
I'm considering being sick and tired
it would look ridiculous by now since I'm losing it on top
but I'm glad to be rid of it either way
I was originally growing it so I could donate it to that foundation that makes wigs for chemo patients
I did that
I told my kids they pulled too much on my beard and sucked the hair back in...
(since the cut is free when you donate)
I was robbed then, I didn't know that
I can't stand having to do stupid crap like "make my hair look healthy"
I bet they made three wigs out of mine
I had hair past my shoulders long ago.
serves mr right
sometimes it seems that it would serve Mr. Right as well ;)
lots of people seem to like long hair these days
yeah vitamin E enriched shapoo...
hey it's dead tissue
right. it's DEAD, people. stop feeding it better than the rest of your body
Damn she's hot... http://images.google.com/images?q=Jamie-Lynn+DiScala
loss of hair also causes extreme typos too
apparently. so hot she has to take off most of her clothes
haha talk about Mr. Right makes Jymmm post a girlie pic
Nah, I'm watch the Maxim 100 on VH1
up to #24
heh, and everyone goes silent! lol
aw, she's ok
les_w did you ever watch TheS Sopranos?
[01:37:11] <SWPadnos> http://images.google.com/images?q=Scarlett+Johansson
les_w you're shitting me, right?
not too skinny there ;)
no I don't watch much tv
eh, blondes are like asshole... everyone's had em
cnn and the history channel....
les_w Then rent the DVD's
les_w I love that show!
don't forget PBS
I watched some modern marvels but got bored
antique road show for the win
screw that... Good Eats
the ambient crowd noise background in antique road show bugs me
Though, I do watch a LOT of Discover Channel
ARS just pisses me off, those bastard sthat pay $0.25 and gets apraised at $150,000 FUCK YOU YA BASTARDS! I can never find shit like that.
used to watch nova, but it turned into softscience mush so I stopped
the wisconsin public radio station has 60hz hum for as long as I can remember - email them and nothing
it think it is to lul the listeners to sleep
I always have ground loop issues in the music room
can never get the hum inaudible
close but not quite
even with balanced lines
skunkworks: try turning over your radio's power plug
I hear it in the car also :)
thats how loud it is/
well I was joking anyway
I actually wound a few turns arounf a 1350 wrms amp's transformer from one ground point to another
that was often the fix for hot-chassis tube radios of the 50s-60s
I have it hooked through a isolation transformer
multiple devices can rarely bre properly star grounded
* skunkworks was kiddding about the isolation transformer.
used to be good to have for old scopes.
bre? another new word!!!
jmkasunich said a proffesor just died using a isolation transformer on a scope
I hate when I get mail from idiots that think I owe them something because I work on emc
I just wish I could play with it
I overbooked myself.
"I know you've volunteered a lot of time already, but since I'm now using it, you have to help me even more"
cradek: "Becasue you work on emc, you owe me a cheeseburger biotch!"
I'm not too pushy am I?
actually I think I'm glad I overbooked....looks like the economy might go to hell again soon. Get that cash in the bank!!!
has it been out of hell recently?
and "sense of entitlement" and "shitty mailreader" go hand in hand (can't even send them a url to the docs)
skunkworks: certainly not
tell them to copy and paste, or they're not worth your time
skunkworks: you give good bug reports instead of bitching
SWP: most everyone has been doing pretty well as of late right?
err - almost
I sure have.
SWPadnos: you'd think ANYONE could figure that out, but no.
I do what I can :)
I was lucky enough to lose an $850k project (which may soon be a $300k project again, but one never knows with this client)
and just for insult, I got rear-ended in my van, which was very annoying to me
I figure I had better work my ass off while this lasts....I'll take a vacation the next downturn....like a 2 year vacation...
yeah - that's the way to do it
and you don't even have to convince the wife that it's a good idea ;)
this can be an issue
(especially when they teach, and have the summer off ... )
yes I remember issues with all those wives
SWPadnos: a friend had that happen here this weekend, but to make it more fun the guy who rear-ended him yelled at him, called him a liar, and that his bumper must have already been that way.
yeah - "the back bumper was already in the engine compartment"
rear end and I stay calm...it's door dings that make me crazy
the hit was hard enough that a computer that was wedged between the front seat and the middle bench seat actually got dented
and it's a steel case
sounds like 5-10g
something bad. every fluid was leaking out of the other vehicle - radiator, transmission, oil ...
gonna say your neck hurts?
and the lady hadn't been wearing her seat belt - she was quite dazed
nope - it's fine now. no point in that
must be a genius
airbags are good for that (in most ways)
luckily I haven't had an air bag go off yet
don't you want my insurance to go up? say it hurts haha
yeah. I gather it's no fun
I'm scared of the things - I wish I could disable it since I'm smart enough to wear a seat belt properly
a fireman/EMT friend of mine said "airbags are like being hit by a prize fighter"
one thing I don't like about side curtain airbags
my last accident (guy rear-ended me) he had no license, no insurance, no plates
but it's better than being hit by a truck, which is what it's like without them
they pop through the leather seats
so you cannot recover the leather
I hate that. even when insurance is mandatory
of course, that's what the uninsured motorist coverage is for
I already have a shopping car ding on my new car back bumper
what did you end up getting?
Lexus Gs 300
ah. how is it?
other than the cart dings ;)
numb and dumb. When driving you hear and feel nothing.
great for trips
silent as a toumb.
sounds great for everyone except the driver
Have to waththe speed...you go faster than you think
very nice interior
what's the tow capacity? ;)
that's been the question I ask everyone lately.
trying to figure out how to move a 3000 pound lathe (or three)
oh well I have a pickup truck too
sounds like a more appropriate vahicle for that
I moved a whole machine shop from chicago
with a big truck, or towing trailers with a pickup?
penske and forklift.
or using a shipper
ok. I looked into that
too bad you can't get the flatbeds without a CDL
though I could probably convince my father-in-law to drive if need be
I did two trips in the largest truck they had
rented all terrain forklifts on both ends
heh - gotta use them then - no mileage charge like the others
kidney busting ride when you load them down
I think I ran 30,000 lb per trip
kidney busters empty or full. in between, nice ride
damn. tractor trailers or straight trucks?
I WAS ON THE HELPER SPRINGS>
STRAIGHT> @$ FOOT CARGO BOX
the max load on the straight trucks is ~10000 pounds
tap the shift keys les
ok. 24 foor straight truck
I overloaded severely
only triple the rating
for a ~800 mile ride
as per the law of rental trucks
no big deal
fenn said this isn't rocket science, but how do I figure center-center distance for a timing belt and pulleys?
I don't knoe the exact weight
they have a calculator
there's a formula in Machinery's Handbook as well
I just know I stopped loading when I hit the helper springs
that's 2 inches of suspension
if you had to inflate the tires to 100 PSI, it was overloaded ;)
just left em as they were
I can say it was horrible
I screwed up
hmmm. can you tll me the VIN of that truck, so I don't get it? ;)
on notorius I75 monteagle I was 20 mph max on the upgrade
over rev and brake temp both on on the downgrade
I don't know that area
heh - 75 MPH min on the downslope
I guess I 'm no trucker
you had no truck for that load
I know that now
and I'll never ever do that again!!
did they rent the forklifts as well?
nah...got them from locals
I suppose I can get one close by here
especially with top-heavy machinery
when does it tip over?
yeah - those things are heavy for a reason
turns out the forklifts were no problem
lifted lathes from under the ways
cabinet and all
ok - that shifts the balance point a lot
padded it some
not sure I can do that with this kind - Hardinge CHNC
fenn: nice work on the troubleshooting page on the wiki.
no not with a hardinge
do you guys trust these numbers for making motor mounts, or do you always allow slop?
not sure its all 100% correct
allow room for adjustment and belt stretch
there has to be adjustment, or you can't get the belt over the pulley flange (assuming you have one)
do you run the belts pretty tight? these have fiberglas in them I think
and you can't tension them properly
better than I started with :) - thats whats nice - someone else will add/fix
glass gt2 belts run very tight
there's a tensioning and measuring method in MH
gates has online calculators for all that stuff
fenn: on ubuntu, udev makes /dev/RTAI_SHM and /dev/rtai_shm once properly configured
ok thanks, I'll design in some adjustment and adjust them "pretty darn tight"
i noticed udev didnt have any devices folder like it used to
you used to copy your custom device files into this folder and it would recreate them at startup
cradek, probably -1/4", +1/2 " is a good range (depending on the belt length)
maybe +/- 3/8
fenn: yep, debian are adamant that everyone play nice with udev
fenn: I suppose it's nice once everyone has support in their code, but meanwhile, it sure sucks
SWPadnos is now known as SWP_Away
SWPadnos: this stuff is tiny, 1.4" c-c
oh, then divide that in half or so