then i screwed the plate to the main plate that i had the mobo on, so it was easy to pull it out if needed
one more case to put back together :)
i got a small computer case graveyard on the side of the house
hmmm, I might have another case or two up in the attic
you know what you could do... make some little spacers, and tap them 6-32 on one end, and 3mm on the other... then you could screw 6-32 set screws into the spacers, and they'll basically be what you need
plus there will be no undercut, threads all the way to the spacer, which is better for sheetmetal
yep that is plan number B at this point
i almost did that myself, but the standoffs were only a buck or 2 so i just bought some
i'm happy, i needed a computer in the livingroom to hook up to the tv for watching netflix, and i managed to build one out of spare parts. Didnt think i had enough, but then i remembered i had a mobo with a dead p4 processor, and i had a dead laptop with a good p4 processor
worked like a charm
cool, I love it when a plan come together
yep me too
I am using one of those intel atom boards for a media pc. very quied
(for netflix and recorded movies)
what is netflix ?
suprisingly good picture too, i was expecting it to be a bit choppy since i'm using dual monitors from one vid card
skunkworks: i'm using a silverstone home theater pc case so it's pretty quiet too
it is sort-of like blockbuster - but online. and you can stream some movies.
jt-plasma: it's a subscription dvd rental service that allows you to watch movies instantly from your computer
use a tv out or something to watch it on regular tv?
vga on my tv
pretty close to tv quality
i dont have cable or satelite anymore, i just use netflix
I don't watch much on TV cause most of the time it is some law show on all the time :/
jt-plasma: are you on the run from the law or something?
no, my wife watches them all the time
yea i can see that getting old if you're not into that sort of thing
yea, I prefer to watch science or history stuff
we are running vga into our tv. works very well - also as a monitor
i tihnk i'm just running 800x600
the atom board doesn't do dvi - that would be nice because we could do 1080p
so there is a little stretch - but not bad
hmmm i have dvi on my vid card, but i dont have dvi on my tv
wonder how those dvi to component adapters work
or if there's something better
I'm using stepper motors with EMC and when I set it up the steppers sounded smooth when they moved, but now when I run a part is sounds like poop
what kind of microstepping?
and more importantly, what kind of poop?
I decided to stay out of this convo
the scatology of motion control
I'm quarter stepping... and it sounds funny like harmonics... when I use "test this axis" the motors sound ok and smooth but when it runs a part it sounds scratchy or noisy
tlab: 1/4 stepping is pretty course, i had to microstep quite a bit to smooth mine out
well it's 1/4 or 1/16
i'm at 1/32
and my mill is pretty big.. i'd imachine the resonance would be quite worse with a small machine
ya this is desktop
18*12 work area
yea, no friction to smooth it out
you cant microstep any more?
what kind of velocity and acceleration would be ideal?
16 is the max
i'd try 16
I am, I've already switched it over heh
i dunno about vel and accel, that's up to the machine
the manual says to run it back and forth till I hit max acc? then back it off is this correct?
i turned down the accel pretty slow, then cranked up the vel as fast as i could without issues. then i went back and and set the accel as high as i could without it stalling
does the velocity depend on the stepping and the jitter of the computer?
disclaimer: i'm not an expert at all
i'd assume it'd be mostly limited by the steppers
do you have your step length and step space set right?
and your direction set correctly as well?
step time and space is set to spec sheet of the a3979 chip I'm using
are you accounting for your latency?
direction I'm not sure, but I know I can move axis both ways
latency the jitter?
ya I put in a jitter time
step time and space is 1000ns
oh you used stepconf?
direction hold and setup are 200
ya I'm using stepconf
are you reading that from your ini file?
or was that from stepconf
ya I reload my-mill.ini
reading from stepconf
i really thought you had to add your latency to the step length and all that stuff
i'm using a mesa card so i'm not positive with a parport, but i thought thats what you had to do
I was going off what this guy has, http://hobbymechatronics.com/projects/29-mechanics/11-sherline-cnc-conversion?start=5
he's using the same motor driver but different machine
if my machine is rated at 5TPI on Y axis, do I put 5 in for Leadscrew Pitch?
did the microstepping help?
still checking the velo/acc settings the changing in microstepping effected it
ya it sounds better
Y axis sounds a little crappy and I miss some steps still
why did you have to mess with the accel and vel?
was to fast or something
i never had to mess with them when i changed my step rate
I'm not sure I have them set right
velocity of X is .8 in/s but Y axis is .2 in/s
the size/weight of your machine has a bit to do with that
this seem right?
I'm using a Fireball
that to high?
that seems really low
it will only let me go up to 1.4 in/s
stepconf for X axis velocity
I changed the jitter and microstepping and it let me go up to 1.4, before it was only 1.0
what's your accel?
I only have 32V power supply
you dont need to use stepconf, you can edit the ini manually
someone else might have to step in here, i dont know much about parport stepper setups, but that seems slow
the machine max out at 220ipm
my machine is over 6000lbs and my steppers are running 1.8334ips
and that's with high power supplys
220 is quite a bit different than 12
your accel seems high
maybe not for that size of machine, but mine is only at 7
maybe try lowering it to 10 and see how high you can get the velocity
Hello all. Newbie question here. I have a setup with EMC2, a Mesa 5i20, and the Mesa break out board with the terminal strip for my gpio. P2 on the Mesa is used up with encoder and other servo functions. The first pin on P3 is GPIO 24. I know that pin is correct because if I set the parameters is_output to true and setp the .out pin true and false, I can see the output toggeling with my volt meter.
So forcing outputs has proved good.
Now I'm trying to force inputs.
I set the is_output parameter back false. I read +5v on the pin with my volt meter. I short it to ground and expect the state to change in the HAL configuration monitor.
Can I get some help showing a new guy how to physically switch the inputs and see the feedback in HAL configuration?
Anybody out there this evening?
just got here
mozmck: Are you familiar with Mesa cards? I am new to the whole EMC thing but have been able to set up and force some of the gpio on my mesa card. I'm trying to simulate inputs with and am missing something.
no, I don't have a mesa card - sorry.
anybody using facing.py ?
lol looks lik my Y axis is doing twice as much distance as it should
I did the EMC2 AXIS and the letters are taller than it looks like it should be
maybe thats why your velocity was so low
wonder what is causing it
whats your scale set at?
scale for x and y axis is 16000
for z it's 38400
and your pitch on your leadscrews are the same for x and y?
ya I was told they are 5TPI double start?
what's the settings on your stepper drives?
are they all set to the correct microstep rate?
all 3 of them?
yes they all set to 16 microstepping
i dunno, something's gotta be wrong
yeesh I set it to move 1 inch and it moved 2 inches
your positive your scale is set at 16000 for both axises in the ini file?
look at the ini file, not stepconf
is it just your y axis?
ya and it's the one making bad harmonics
I think a jumper was weak
yea sounds like maybe a hardware issue or something
hope ya figure it out
now an inch is going 4 inches
yep hardware issue
maybe bad stepper drive
probably is bad, since I designed and built it lol
tlab, check that the hal file is using the stuff you put in the ini file
there are some versions floating about where the hal has its own values in it that override the others
what should I be looking for in the Hal file?
gonna goto bed I'll mess with it more tomorrow
ever hear of a 'denary integer' ?
[13:07:18] <EbiDK> http://www.youtube.com/watch?v=RUMIkwG-qkI http://www.mudhoney.net/lyrics/billion.htm
yeey, Z axis mount in aluminium is done =)
acemi is now known as Guest77408
seb_ is now known as sebjames_
Peter - mesa http://www.cnczone.com/forums/showpost.php?p=731873&postcount=31
allmost done with the outside now ries =)
as far as I know, a "yaskawa servopack" is just a velocity mode servo amp
I'm pretty sure the ones on Jr say "servopack" somewhere on them
cradek: do you think your servo got bumped?
(alignment issue with the jr)
sorry - changed subject.
the 'suspect' motor and coupler were on the ballscrew that someone had removed and sent off to an inept ballscrew rebuilder
the Yaskawa servopacks I have can be used in torque or velocity mode, and I think they can also be set for step/dir or other "digital" input types
these are sgdh series
so probably someone 'bumped' it with a crowbar trying to get it uncoupled
SWPLinux: sounds like it could mean anything then
SWPLinux: How's Dallas?
yeey, Z axis mount in place and now i can see how not straight my leadscrew for Z is :/
i suck in the lathe :/
Dallas is cool and cloudy, soon to be rainy/snowy
"Latest Poll: <blink>How many of you have .00005 Indicators and what do you use them for???</blink> [ ]Yes [ ]No"
SWPLinux: Heh, ask a friend that lives in Houston and he says differently =)
Latest Poll Results: Yes: 0% No: 100%
I swear I lose brain cells every time I read a web forum
Houston is 200 miles from here
cradek: If that's true, skunkworks is SO SCREWED!
Jymmm: yeah, ouch
cradek: you're losing brain cells all the time, you just notice it more when you're reading a web forum
skunkworks: Reads cnczone like it's a lifetime's worth of all the pr0n in the world and he's a 12yo kid
SWPLinux: yeah, they scream as they jump ship
SWPLinux: Now, what's happening in Dallas? Soap Opera? AVN?
NBA Slam Dunk competition
SWPLinux: Got Hexapod? http://www.youtube.com/watch?v=kS9oxp0mlw8
hey - you just have to filter the content so as to not lose too many brain cells.
skunkworks: But your filtering is defective =)
Jymmm: no, I have not got hexapod
[17:36:57] <frallzor> http://pici.se/p/large/ywDgjSkrZ/
the birth of my box, more to do but its a beginning
frallzor: Your box has an udder
and four tits
It's a moo box
Paint it brown and you'll have Chocolate Milk
SWPLinux: Yeah, that looked pretty cool (and wicked too)
frallzor: No BRB?
frallzor: BRB == Big Red Button (E-Stop)
there will be
just havent found a nice one yet
expensive shit here
hah... $700 for one I found now
thats just insane
love this quote 'I got it working with EMC2 (Linux equiv of Mach3) over the weekend if you'd like a copy of the configuration files. '
might have found a pretty cheap one now
Hello, i'm planning a homemade cnc. I just the linear slides. right now I'm thinking about the diameter for the threaded rod. I think I'll build like in this image: http://www.mixware.de/bilder/b5.jpg
.My problem is that I dont know the diameter. the threaded rod have to be about 40 cm and I wont cut anything harder then alu. Anyone here who has experiences in this?
is that a ballscrew or acme?
have a picture of the whole machine?
can emc handle hexapods? :)
now I remember that replacing a camlock cam isn't that easy for some reason
and wouldn't you know the illustrated parts breakdown has a bad drawing
damn vari speed belt keeps slipping
on the lathe
I found my email to the sheldon lathe group from the last time I replaced a cam, but all I said was "I finally got the pin to move enough to let the cam go free"
wow this is the first time i had to use super-help-my-ford-escort-up-a-hill low gear on my manual lathe
I just got the back gears on my lathe to work, before I was always going too fast
I suppose I could put the potentiometer on my vfd...
i'm trying to make a backplate for my 6" chuck to go on my hardinge
danimal_garage: what kind of mount is it?
so i'm starting with 6.5" diameter 4140
hardinge taper mount
not cheap or easy to get
shoulda known it was something strange
hardinge wont spin slow enough to turn it
well it will, but the belt just slips half way through the cut
so i gotta use the manual lathe
which is actually impressing me at the moment... didnt think this old girl had that kind of a cut in her
I found out mine faces a lot nicer from outside to in
it's in horrible shape
my carriage is lifting under the tool pressure
I got that problem too, lots of fun
i locked it down and it helped
lock on mine is broken :)
I had no idea how bad a lathe could be, I keep discovering more answers to that question
it makes things round with a lot of urging though, can't complain too much
just a small question: what does M5 mean? (does it mean 5mm ? )
5mm threaded i guess =)
it's 5mm threaded
usually you have a m5x1.5
or something to denote the thread pitch
ok just was unshure
or it means spindle off :)
anonimasu, the diff in the threading sizes doesnt apear until like M8 does it? :O)=
M8 means coolant on
flexxxv, "sure" =)
you mean in gcode? :P
M code :)
MrSunshine: they do it's just not common
jt-plasma: how goes it?
making prints of a machine we are building to remove a bolt once every 5 seconds
i have a ford ranger that does that as well
the bolt hods the engine to the pallet while it is assembled on the conveyor line, after the run tunnel they take it out so the engine can be painted
they changed the design of the engine so it is harder to get to the bolt so we get to make a new machine for them
repeat customers, that's always good
they wish we were bigger so we could deliver more equipment
too scary to do that for a couple more years...
got any pictures of the machines, or is it all proprietary and confidential
yea i hear ya, same here
here is a couple http://i47.photobucket.com/albums/f163/johnplctech/Testing01.jpg
[19:04:13] <JT-Work> http://i47.photobucket.com/albums/f163/johnplctech/HPIM0629.jpg
nice, really professional looking work
i miss building machines, that was fun
thanks, we enjoy designing and building them
how much of it are you fabricating vs. buying off the shelf stuff?
first machine i pretty much machined everything, and the second 2 machines i bought more off the sheft stuff
we fabricate all things except cylinders and slides and stuff like that
this guy i fabricated everything, including the ways,feed unit, gear box (not the gears), spindles, etc: http://img.photobucket.com/albums/v20/danielwilcox/DSC00065-1.jpg
Looks mean :)
for cutting perfect 45deg angles out of your arm.
not useful if not mill
ha, yes, it's a very mean saw
there's usually a cover on it. blades arent exposed when it's running
if I could figure out who decided it was a good idea to bury a loose pin over 1" down a threaded hole of the same diameter, I would go relieve my bladder on his grave
I got one out with an allen wrench with grease on the end, the other doesn't want to budge
hydraulic it out
how you do that?
can you drill a small hole to it
I'd rather not drill a hole in my spindle
I means very small
there should be a path to the pin from the cam
why are government agencies closed today?
if tight you could make an extended dirll and drill a small hole in its end, then use a stud extractor
(in the us)
if there is a path fill with oil and hammer/ram a close fitting pin in to force it out
* archivist has to get space made for toys tomorrow
what are you getting archivist?
sliding head lathe and a horizontal mill, and a gear hobbing machine
all old stuff to play with
sounds like quite a load - did you find a shop closing?
and a schaublin lathe
where I used to work cradek
ah, neat - I remember you saying you were hoping it would work out that way
didnt get the hobbing machine I really wanted though
danimal_garage: D.C. closed for snowpocalypse II
we got snowed on today while moving stuph
I dunno how much snow they got today, philly got most of it
funny little pea shaped snow today
so why the hell is the post office in SAN DIEGO closed??
oh wait, it's not... my mail man was just a few hours late
I just upgraded from emc 2.2.8 to 2.3.4, now TnM6 does not seem to set iocontrol.0.prepare, nor the change pin.
prepare is looped directly to prepared.
terry, do you have a TOOLCHANGE_AT_G30 = 1 IN YOUR INI?
remove it. it doesnt work with 2.3.4
gotta use TOOLCHANGE_POSITION instead
TOOLCHANGE_QUILL_UP = 1 doesnt work either
I do not understand what the numbers are after TOOLCHANGE_POSITION?
they're fixing it for the next rev
They are not axis locations?
the numbers are the positions
so if you have xyz axes, the first number is x position, the second is y, and the third is z
Like TOOLCHANGE_POSITION 3.0 2.5 ?
so enter whatever numbers you have in your var file for g30 positions
OK, will try it.
you probably have to say 3.0 0 2.5 for a lathe
ok, you still need x,y, and z, but just have the second number as zero
cradek: your goodies show up yet?
they're out for delivery
seb_ is now known as sebjameswml
wonder how long before the neighbors call the fire department. this cutting oil is smoking up pretty good
Lots of useful lumps of brass on fire engines...
i had an American LaFrance oil filter on an AGie, very mechanical & pump looking, but at the top was big brass WInged Figure holding the lid on the main pressure vessel. very classy (Am LaF also made fire truck pumps )
andypugh: i made my own cycle time counter in ladder
minutes and seconds
They made whole fire trucks. They might well still do so. They had some brilliant ladders with a second driver at the back.
* bill2or3 loved that game.
you guys play with your pumps
might add a parts counter and a total job timer
probably useless for alot of us, but since i run production, it's handy
There was a chap in the UK buying 1920s fire trucks, then shortening and narrowing the chassis to make replica Edwardian race cars. I never really approved.
allow one field for cost per part and have it update your bank account ( unca scrooge meets rube goldberg)
i bet there's a way to integrate it into quickbooks
Puma robot typing it in, and writing the cheques
archivist: do you know of better for the price?
probably one of the open source accounting progs
its a number of years since I was close to it and I did not think a lot of the stock/inventory
didnt know they existed
i have a friend that works for Intuit, so i got my copy for making a few small parts for him
otherwise i think i would have researched it more
accountants like little companies to all use the same .... so its easy for them
loads use sage and a good few use quickbooks over here
Jon_geo01005 is now known as geo01005
I got my 0.8mod hob today. It's rather cute.
archivist: Not as much of a clusterfsck as PeachTree though.
Well, Peachtree wasn't a clusterfuck, just complicated
Jymmm, at a previous job I ran the accounts prog and did a survey to replace it, there are some odd things out there
archivist: to replace which?
it was called TABS
a UK prog not well known
That's the other thing, it helps if the software understands the applicable tax law.
although they did one called easy tabs on apple II
we went from Apple to concurrent dos to unix with them
Well, most ppl dont even know what double-entry accounting is, so eh.
people are confused when I do double entry on a spreadsheet :)
(When I had a Ltd Co I just used Excel and the software that the Government supply to handle the payroll)
archivist: Like I said, most ppl dont have a clue.
But I had a very forgiving employee.
anyone have a clue as to why a stepper motor would move 4x the amount it's told to? I move it an inch, and it goes 4 inches
Microstepping turned off?
the scale is set right I believe... I can move the driver to another axis and it does the same thing
no, I'm using 16x microstepping
but forgot to set the driver to 16x
Are you sure it hasn't gone to 4x?
all 3 drivers are set to 16x
If the problem moves with the driver, then I suspect a faulty setting switch.
or a mistake in your maths
Set it to 4x microstepping and see if it goes 16x too far?
some switches are difficult so see which is off or on
wow that's weird
I set the driver to 4x, emc to 16x and it works right
home made drivers, so probably something I did heh
I think that the driver is not responding to the settings correctly.
What is the setting mode?
Jon_geo01005 is now known as geo01005
How is the microstepping set?
4x on the driver, 16x in emc
No, I mean electrically. Is it DIP switches?
oh it uses jumpers
jumpers is my guess
I wonder if the logic is inverted?
because i'm phsycic
I tried different jumpers too
and he told mme yesterday
Hmm, jumper not jumping to ground?
an oscilloscope would be of great help probably
one probe to step input and an other one to a coil in the stepper or some drive signal of a drive transistor or something
did anyone get one of these/try one? i heard about it here (pocket scope looks like iphone/game ) http://hackaday.com/2009/10/19/dso-nano-oscilloscope-reviewed/
I considered it, but decided that a second hand "proper" scope was a better fit to my needs.
its just so cool, like a tricorder that works
I can't think of many times I have unexpectedly wanted a scope when away from home.
There are several on eBay most of the time.
be handy at robot events
True, but we always had a truck full of stuff, and the Tek scope I bought can hide under a piece of letter-size paper.
that would be nice, but I'd like a bigger screen :)
[23:07:18] <Jymmm> http://www.seeedstudio.com/depot/micro-digital-storage-oscilloscopedso-nano-p-512.html
what device did they repurpose for that?
Still not available yet
Eric_K: probably a iphone clone
[23:09:27] <andypugh> http://cgi.ebay.com/Mrico-Digital-Oscilloscopes-Pocket-USB-Test-Equipment_W0QQitemZ120519092968
fluke should build one of these into a dvm and blow the whole market away
they'd need new factories
Eric_K: And FLuke will jack up the price too
found my problem I believe... I don't show a connection between the microstepping jumper to the actual pin.. so maybe a bad solder
yeah, but if they didn't....
[23:11:03] <andypugh> http://www.rapidonline.com/1/1/3203-fluke-124-industrial-scopemeter-124-s-industrial-scopemeter-plus-scc120-kit.html
Eric_K: But they always will.
fluke makes one, but it's $1500.
Fluke makes a few actually
they had some cheaper dvms that were really nice
one that was sears branded
I'm waiting till AFTER they they have them in stock - let someone else be the beta bitch =)
I built one of those $50 AVR based "oscilloscope" kits.
bill2or3: the green one?
it's better than using a blinking LED.
yeah, the green one.
HEH... MOD your DSO nano UI
mostly what I got for building it is confidence in my smd soldering skills.
bill2or3: the green one?
bill2or3: This one??? http://www.seeedstudio.com/depot/digital-storage-oscilloscope-with-panels-p-514.html?cPath=11
thats the one, but in unassembled kit form.
it was a lot of very-tiny soldering. :-)
[23:23:28] <Jymmm> http://www.jyetech.com/en/default.html
bill2or3: looks like there is a gGroups for it too
[23:24:08] <Jymmm> http://www.youtube.com/watch?v=L-lwDoEee2I
it's pretty neat, well worth the $35+3hours.
well, if you solder stuff for fun, anyway.
bill2or3: did you see the Luminary Micro demo board scope?
[23:26:03] <Jymmm> http://www.youtube.com/watch?v=heyJ-g70D_U&NR=1
[23:26:56] <ds3> http://www.luminarymicro.com/products/lm3s3748_usb_h_d_evaluation_kits.html
this will also do USB
* bill2or3 looks
the jyetech one does XModem. :-)
how much is that luminary board?
Is a UPS PSU likely to be switchmode or linear?
no idea, I just all it as a demo
Sorry, I was changing the subject. If I win the servos I am bidding on on eBay I am going to need a 48V supply @ 20W or thereabouts. The manual says not to use a switchmode PSU
i just found my box on sold state relays for my spindle
Hmm, reading back, 20W @ 48V would be easy. I meant 20A @ 48V
send me some
andypugh that is a pity about the smpsu's, i have 3 X 48V psu's sat on my shelf that are brand new that u could hvae
haha yea 20w is nothing
I suspect it would be a long, wet, walk to pick one up though, pjm
they are not 20A tho
the local traffic light company chucked perhaps 100 out, still boxed
and i fished about 20 out of the skip
Hmm, I know a traffic-light engineer.
might be worth asking
i expect the cabinets have decant linear PSU's in
There are lots on eBay, lets see if I win first.
is SWPadnos around?
currently £10 for 6 of integrated servo/drive motors
They are a bit too clever (serial port comms) but support step/direction or quadrature input too.
I suspect I could buy them and then relist mentioning "CNC ! Mill ! Lathe! Mach3!" and make 10x the money.
sweet, quadrature input stepper drives?
No, BLDC servos
[23:48:10] <andypugh> http://divapps.parker.com/divapps/emn/prior_version_compumotor/cat/english/iBE_flyer.pdf
Anyway, time to sleep.