I fI was able to get my hands on some linear scales, could they be connected to emc in a way to provide feedback simular to what rotary encoders would do?
that don't work well
but they do use liner scales as a second feedback
to offset thermal growth etc.
why not? just curious
Jym - why not just get some U.S. Digital E4P
that wouldn't tell me the position of the axis, would it?
between power cycles and such
because the motor wil often sit there moving back and forth in a continuous "hunt" for the perfect position.
add a 3 axis dro
you could use it when the pwoer to the drives is off
and some have serial outputs
and or paralell outputs maybe?
an E4P is a rotor encoder - with a 250 line disk - if this was on your stepper shaft you would read .00005"
* Skullworks_PGAB bases that on a .2 pitch driven @ 1:2
error - .0001" rez
Skullworks_PGAB: not to be a smartass, but what does an encoder REALLY do for me? Just accurately determine the amount of movement, not acutal position
not true position
ok, I'm getting it now
does not factor in backlash without software.
does anyone know of a quick dirty schematic for 555 timer stepper control?
Yeah, and that's where I get kinda stuck.
chr0n1c: and what is a TDI gonna do within emc?
mounted on the table... touching the z axit
Jymmmmmmm: honestly - if you get the steppers working as they should - you will only loose posision in a crash.
you put the numbers you get from the indicator into the ini file for the backlash comp?
my home stays put even when i turn the machine off
chr0n1c: WITHIN emc, not external. I need a way to log movement to run long term tests as nothing is repeatable.
as long as i home it before i shut down
also an option - put the encoders on - and use the PICO USC to drive your stepper card
If I can't successful repeat an error over and over agian, I can't fix it.
if the steppers loose steps the USC will spot the error on the feedback
See, were back where we started, just throwning money at it, but not knowing where the problem is.
also - USC makes its own pulse stream, much more stable than the EMC software pulse stream
which axis looses steps - or is it all?
X and sometimes Y
it's free... i don't understand why you are trying to turn it into a caddilac...
*not to be rude...
chr0n1c: backlash is the LEAST of my problems right now
and determining WHY it's stalling... motor, driver, PC HW, config, machine, etc
have they had you back off on the accel rate?
No, but I did... from 20 to 15 right now. still playing
inch per second per second
I have no idea what that means. Just changing settings in the ini
rate of accel
I still dont know what that is. I know it's the rate at which the speed is changed.
laws of physics or cheap china steeprs
* Skullworks_PGAB needs to log out and switch to a different system
back in a few
now continuing the search for that vid - fired Up this WinBORG Xp game box and 2 more servers to search...
eeesh I can jog at 120IPM np
i canonly jog at 10 ipm :(
hell, even made a diamond jogging
is this a vid of your machine skullworks-GAB2?
I wish - kinda
it was built by a guy on the DIY-CNC forms
he is selling them as complete units
but it is a great example of what CAN be done with small steppers
its SCARY fast
03cradek 07TRUNK * 10emc2/nc_files/daisy.ngc: time-honored or silly: you decide
ok, I have to get to work in a bit, gonna shut things down for now on emc box
google images search.. great for finding things to engrave
now I need to start checking USB drives...
Aver is now known as Rugludallur-NewB
uh oh we lost a chicken nugget to the basement floor!
being stubborn pays off
found the link to the site
[00:49:49] <skullworks-GAB2> http://romaxxcnc.com/Home.html
cradek: ooh you finished daisy?
and ran it on max?
that's a pretty machine...
take a look at that drilling video
i've drilled at amazing speeds with a pro tool n die machine
or the jog video
i used to cut wood on my milltronics at about 60 or 70 ipms
that machine runs scary fast when you note the true scale
looks liek y is a belt drive...
must be on some nice bearings...
Had a job for DEC (Digital Equip...) making some SCSi backplain adpator boards out of Lexan - was cutting at 300IPM at 12000rpm
$20 for 50
yeah i ordered some skate bearings.. for prototype slides and a spindle.. for the 24" x 48" incher i am building
uses LOTS of them
i was thinking about 3 per... place wher ethe table mounts to the slide
i only got 8.. to see what kinda quality they are
just be sure to include a method to adjust the gap
i also though bout maybe some wheel bearings for cars... they are cheap(ish) and are built to last for a while
would be good for a spinle i think anyways
If I do the router thing - I'm going to dump the money for a good Maketa router - or many even a Porter cable.
but it won't be soon
no place for anything that size
yeah i am running out of room in my house
i'm going to have to trow some junk away to make room for the 24x48'er
as is I had them hold off shipping my IH mill till I get back from CA
so It should go on the truck about may 10th
here goes a 54 minute engraving program on some acrylic... ran twice the second for a cleanup pass.. :|
...and iron cross, with a 3d skull in the middle of it...
you the the resistors to run on 12V?
no..i was gonna get some when i was at mendelsons today i got all excited abotu the dual shaft stepper i found to replace my z...
so i can set zero by hand and not with jogging
and i got a 450 oz in slo syn 8 wire... already wired for unipolar
round or sqr body?
i'mmma put a handwheel on the z dual shaft.. flip the drive off.. set zero flip the drive back on
but it was only like 15 bux.. ;)
so no matter which type
still a good deal
they themselves are sellin them on ebay .. the same motro for 143 or something
PT Barnum had a phrase about that...
ebay is such a success because there is always someone who will buy your junk
i sel shit i find in dumpsters on there
i know what he means
those crazy junk mongers!
I made a fortune dumpster diving after the 1984 Olympics
i pulled about 3 grand in the last year... just part time after work.. in between people hanging out n partyin
lol.. i got the party pad....
KABC was loading untouched pallets of cable and other hardware kept as emergency spares into pull off dumpsters
my own house and i'm single...all my buddies hide from the gf's here
so i get interrupted plenty
i drag out copper wire of any kind every chance i can get
i got one hell of a stash here
i need to melt the palstic off it and cash in
sealed boxes of TRW and Beldon cable
Sold it to some business that used that same catalog number for 20% bellow there best price and still made out like a bandit
i should go out tonight.. but my car is making noises..
bad wheel bearing or a bad cv joint
either would be bad to break down at 2 am
*behind a closed biddness
the cops already are up my wazoo
my car makes noises too - attracks cops
i usually drive around dayton till my car is packed with cool stuff then come home unload it
take pics... put the cool stuff on ebay and keep a few things once in a while for myself
Mustang GT with Flowmasters.... I'll rattle your windows with out rap music...
man, one of those
I could have sold truckloads of PC's
I'd (silently) drive a circle around your car :-)
i got a 1990 lumina eurosport with 170,000 miles :(
it still looks decent though
but it showing its age mechanically
my friends computer shop tosses all PC's under 933 straight into the garbage - claims the labor cost to test them is more than there worth
send me one!
i'll pay shipping!
hell send me two
I think I could send yoou a 333 for your existing box
i used to have 5 pcs networked in my house.. they all slowly died one by one...
i'm down to two now.. thisone and the emc box
yeah only 5...
i got 4 of them at a biddness auction.. for 4 bux.. monitors and all
40 bux.. oops*
it was a title agency
something about getting shut down for scamming and money laundering?
got a pile of loose cpu's here
got a 333 slot 1 p2?
few Athlon XP's
i'd have to check my mobo to see if it'll work...
I know it works
it's gateway.. so.. who knows
i mean to see if i can go to 333
<<< ex GTW tech support
i got two 450 slot1's but no board to support them
i think at least one is still ok
one.. i over clocked to 733...
it fired in 20 mins
got the serverence check and the T-shirts :)
gotta love free thsirts
i am getting worse with the dyslexia thing i think when i type
loved the one I got - "I survived Y2K at GTW"
it doesnt happen when i read or write
only took 2 calls that night
maybe my 1 finger is getting longer...
the y2k was bogus
it wasn't even the real year for the apocalypse...
i'm no expert, lol
no - just there was sooo much hype the companies that knew they were going to have issues got them fixed well beforhand
i never had anything go hokey then
but.. i don't have 2 gb databeases either
but yeah - I should have a slot 1 pII-333 here
maybe i got somethin we could trade...
need any pc parts?
and a few 450's - but thats a BX board and yours is an LX
I have PILES of PC parts
I would gladly give them away to good homes
so you know about the gateway mobo's?
do they have jumpers or autodetect for the cpu's?
up thru soc 423 p4
i can't see it....
for slot 1
i got so much stuff shoved in that box
i tore all the stupid plastic off... i gaind 8" more desk space, lol
only the early socket 7 boards required jumpers
and soc 8
if you had a Pent pro...
find the p/n of your board - should be a 4000xxx or AAXXXXXXXXXX
I can give you the entire lowdown
there is 1 important jumper - NVram clear
i'm looking through gateway.com for the docs to this beast
it's a g6-233
i think the ram is maxed out at 384
and i got that in it now
if things doint PnP properly clearing the BIOS will help things detect
yep - 384 is mx
or maybe not.. but the most i can put in with the combo of chips i have is 384
i have a ton of 64 mb's
have a ASUS P2B-S that will take 1 gb - 4x 256
same chipset - but better BIOS (beta)
there were bios updates for some of those old boards that allowed higher clock speeds
not these GTW
can emc take advantage of clusters of old boxes...
BIOS was done by intel and Phnx
and use the multiple paralell posrts in them?
1 wire comes loose = hours of trouble shooting
but in theory it would work?
for cpu juice and inputs?
best idea was running the gui on one - motion on another
that sounds interesting
thats as far as I want to distribute
i mean... i would try possibly if only for the free inputs
it doesn't get cheaper than a cat5 cable and a trash computer
sounds like a setup nightmare
same port address diff box address
sent over lan to a diff address on the motion box...
or serial link...
i dunno how that works though
i like lots of cables everywhere
also boxes might not be able to run the same period or maintain sync
and latency between boxes
but - Mazak does the dual PC
one for motion - one for operator panel
a full pc.. or just a cpu board...
gets strange when one reboots without the other knowing...
i really wanted to rip open the milltronics and put a cdrom and windows and network.. they wouldn't let me
have not seen these new Mazaks
i had to keep opening the pc box up and tweaking the vga cable
so i found the heart!
a 586 pc
with 128 mb ram
open slots.. pci and isa
only 1 pci slot was used for the motion interface card
well - I have to go exhibit childish behavor
its the EX GTW crowd getting togather at VS Gaming centers for some networked carnage
last time was BF2
Tonite will be FEAR
nice to play on super geek hardware
Nvida 7800GT 512mb
anyway - I'm out for now
Ok, usdigital has $20 encoders, what would I need to utilize them?
encoders are not the answer to your problems
jmkasunich: Just a way to provide feedback with long term (hours?) testing
you mean so it would trip on a sort of "following error" as soon as something goes wrong?
I figure I'd log the errors and try to see if there's a pattern
jmkasunich: Well, I'd hope to be able to use something like halscope (with data logging) and then when the commend position is not actual position logg all of it.
soo if it's only when all axis are in motion, some are in motion, in a curve, rapid, etc
for that you need two free parport input pins per channel that you want to monitor
plus encoders with the right ppr
ideally, the encoder COUNTS (not lines) per rev would be the same as the motors steps per rev
Ok, I have a dual paraport PCI card, I've neer used yet.
you are doing 200 step/rev x 8 microsteps, so 1600
you want 400 line / 1600 count encoders
1600 or you mean 16000
you're gonna put them on the steppers right?
right, sorry I was thinking with the 10TPI leadscrews, nm
then you just have some hal-fu
parport -> encoder (hal component) -> sum ->
the other input of sum is the position feedback from stepgen
Yeah, something like that is what I was thinking. I just need some way to get moe data to narrow done the caue, everything so far is jsut guessing.
where stepgen thinks it is, minus where the encoder says it is
then feed the sum output to a window comparator with a narrow window, it will go true when they don't match
jmkasunich Can emc do datalogging, ?
something called sampler
Jymmm: please say you're not using that laptop with known realtime problems still
and hal can "tap" into the encoder signals?
cradek that was three different machiens ago.
so no realtime problems now? latency test looks good?
Dual P3 1Ghz with 2GB ram and ovl max of 15115
ok I'll butt out again :-)
Thought the onboard video only has 4BM, so I got max of 1024x768 I cna live with it
cradek (as long as I dont run glxgears =)
Jymmm: yes, hal can tap into them... hal is the only place they exist
4MB gets you 1600x1200x16bit
cradek good to know.
simple matter of multiplication...
jmkasunich What I was thinking is coming up with some "known" patterns (gcode), run them and log commanded position and actual position, then analize all three items.
probably among other things.
you should be able to run any program
but the sampler output will be hute
one line of numbers every 0.001 seconds
more than 2gb?
about 100-200 meg per hour, depending on how many variables you choose to capture
variables are the spice of life!
that was cheesy
i jsut found a cnc lathe lens mold production program chris...
it estimates focal lentgh and such
but it's for windows
Sorry for the lag, at work, eeeesh customer want me to help them. how rude!!!!
"i don't know anything about that... i jsut work here..."
jmkasunich I can tosse the raw data into a db and analyze it
chr0n1c Yeah, I've been using that for a long time, I think they caught on now
sampler just prints lines to stdout
jsut make parts and toss out the bad ones.. you're missing the fun!
you can redirect into a file, then process any way you like
jmkasunich I think I'll just need a refernce point, a timestamp of sorts would help
you could add g-code line numbers also...
to cross reference with the program
are you talking about logging encoder position so you can see what it's doing when it goes wrong?
that would be much harder, gcode numbers don't exist in hal
cradek among other things.
jmkasunich: I think they might...?
at least they did at one moment in history
you probaby know better than I
if you took some tp internals and exported them to hal for scopeing
unfortuately sampler can only sample pins, not params...
I thought that was one we decided to keep, but maybe not
yet another case where it might be nicer to have everything be a pin
jmkasunich Ok, so encoders can connect directly to paraport or is there some other components I'd need?
you mean on the outside (the hardware world)?
emcmot_hal_data->debug_s32_0 = emcmotStatus->id;
or in the hal world?
well, someone suggested the E4P fro usdigital iirc let me grba the url. I'm not sure if even those are what I need.
you need something with 400 lines/1600 counts per rev
[02:29:56] <Jymmm> http://www.usdigital.com/products/e4p/
if its outputs are TTL, you just need power for it (probably 5V, steal from the PC) and connect the signals to the parport
5v/12v no problem
I have a 30 variable PS too
I have a 30a variable PS too
stopping when it goes wrong would be much easier than using sampler
100 to 300 cycles per rev, 400 to 1200 pulses per rev - not quite what you want
but close, you could detect 2 or 3 missed steps reliably, but not 1
(1 would be tough in any case, there will always be at least a +/- 1 ambiguity)
cradek: The BIGGEST issue i have is I can't repeat the problem, if I can't repeat it, I dont know what to fix. the idead of the encoders is to give feedback to try and determine when/where the problem might be
jmkasunich Tht was just someones suggestion, that's all.
Jymmm: I still think you haven't really tried to repeat it
who can do pcb/component design?
chr0n1c: lots of us can
only a few want to
jmkasunich If I run my machine "over the limits" I can get it to stall all the time, but it's never in the same place.
yep steppers are like that
does it matter if its not always in the same place?
the fact that it stalls tells you you are over the limit
jmkasunich If $60 worth of encoders help me to determine what/where the issue is once and for all, I can live with that.
run at 70% that speed and you'll be fine
if it stalls once in a great while, it says you are very close to the limit
ok, how can i distribute a 555 timer output to terminal blocks.. with a switch for 8/6/4 wire motors...
something with a forward and revers button....
Jymmm: its quite possible that $0 worth of thinking can get you where you need to be
as simple as can be only to help figure out the coils and such
chr0n1c: 4 buttons is simpler
jmkasunich There have been times I've run multiple 20 minute jobs, not problem. Thern run a 120 job and it stalls at 90 minutes itnot it.
whats harder, decoupling the motors and running some tests that way, or mounting and wiring the encoders?
4 push button all on v+
to some terminals...
chr0n1c: yes but that isn't enough for 4 wire motors of course
with a 9 volt batt or something...
chr0n1c: what are you trying to do with the motors?
chr0n1c: just use an ohmmeter
spin them? or just work out the wiring diagram?
i jsut want to figure out wiring diagrams for random steppers
like with no label
that takes an ohmeter, a battery, pencil, paper, and logic
not a circuit
chr0n1c short two wires together, if you can't turn the shaft, you found the pair.
but something that can take the 555 and spin the signal to all the posts in order enough for an 8 wire
not even a control really...
jsut a test card
you don't need that
chr0n1c Seriously... short two wires together, if you can't turn the shaft, you found the pair.
you'll just burn it up
Jymmm is right
i was thinking it would be a fun pcb to mill for my first diy pcb...
and we don't say that very often
if i had some direction to go for a chip to spin the output... i might be able to come up with something with the help of eagle
chr0n1c try it with any stepper motor you have alying aorund.
say you have an 8 wire motor.....
label one wire "1"
then one at a time, hook another wire to it (just one) and try to spin the shaft
for 7 of them, it will spin easily
for 6 I mean
* chr0n1c runs to the shelf
for the 7th it will turn hard and coggy, or not at all depending on how strong the motor is
label that one 2
then disconnect those two and pick another at random from the remaining 6, label it "3"
connect one at a time from the 5 remaining unlabeled wires to 3
the one that makes it hard to turn is 4
repeat for 5, 6 and 7,8
that gives you the four windings, but not the relative phasing
twist together 1 and 2
the shaft will be coggy
if you can't turn it at all, use a wrench or something for leverage
then leave 1 and 2 connected, and hook 3 to 4
ok black and black/white are tough(er) to turn
if its still coggy, 34 and 12 are one pair of windings
how many wires is this stepper?
then the pairs are color and color/white
got tape and a pencil/marker? mark those two
it's japan servo...
it should have specs on the net
but i couldn;t find one similar
or this onein particular
cradek: don't cheat - lets assume there is no coloring or anything at all
chr0n1c so you know the brand name but not the model# ?
have that also
chr0n1c what is it?
jmkasunich: sorry (but there always is!)
we digress - I'm willing to walk you thru the process of finding out the pinout with NO external information at all
I'm interested in hearing the phasing trick
i am following you on the pinout thing , ty
ok, you got 1 and 2 labeled?
I should put this on a wiki page instead....
yeah that would be great
jmkasunich (copy and paste from the lags later)
chr0n1c: has 6 more wires to find and label, I already explained that part
I'll start the wiki page
copy/paste will need lots of editing, I'd rather write from scratch
jsut opened up notepad.. going to start
jmkasunich dont' forget the lil trick to connect two steppers together and you spin one shaft which make sthe one shaft spin too =)
ok.. yellow/yellow-white 3/4...
dad has a bunch of sealed cans of syncos (military) - those are fun to hook up :)
skunkworks: glad you had the 'n' in the first one - I would have worried. ;-)
ehh so i got my numbering off
ok 1/2 + 3/4 together make it still cog but at smaller increments...
try 1/2+3/4, then 1/2+5/6, then 1/2+7/8
two of the three should make it hard to turn but much finer cogging, or even no cogging
the third combo will make the cogging the same or worse than 1/2 alone
ok 3 out of three still fine(er) cog
1/2.. 3/4/... 5/6... together in bundles
i have all 8 wires in pairs of two connected
you don't want three pairs connected at once (or four)
only two pairs
am i followin you right?
then disconnect 3/4
then disconnect 5/6
ok 1/2 + 7/8 in bundles.. makes rough cogging
ok, that means 1/2 and 7/8 are two windings that go together
and i think i am getting small doses of current in my fingers
yeah, when you turn the motor it acts like a generator
did we forget to tell you that part?
since 7/8 go with 1/2, relabel them
make 7/7 -> 3/4 and make 3/4 -> 7/8
that is a nice trick
oops, 7/8, not 7/7
tell me when you got them relabeled
question - 1/2 doesn't have to be connected to 3/4, right? 1 connects to 2, and 3 connects to 4 is sufficient?
Ok. when chr0n1c said "in bundles", I wondered if he was wasting effort
ok.. so 5/6 + 7/8 are bundled
ok, now we need to figure out polarity
hook 1 to 3
(twisted them together, etc)
everything else disconnected
you should be able to spin it with no (very little) resistance
then hook 2 to 4 (only, don't lump them in with 1 and 3)
and try to spin it
easy or hard?
ok, that means the two windings are in parallel
easy w/o 2+4
what about with 2+4?
then the two windings are in series
switch the labels on 3 and 4
lemme know when that is done
ok, disconnect everything again
then twist together 5 and 7
should spin easy
only 5 and 7 are connected?
read that wrong
y brain saw 5 and told itself 6 is next ;)
ok free spin
ok, leave 5 & 7 connected
hook 6 to 8 (but not to anything else)
hard or easy spin?
ok, they're in series again
swap 7 and 8
congradulations, you have identified all the leads on that motor
now lets find the schematic
i appreciate you leading me through that
it shodl stick inmy head now
but it will be in the wiki you say?
that would be good info for lots of ppl
for series, hook 1 to the drive "A+", 2 to 3, and 4 to the drive "A-", 5 to drive "B+", 6 to 7, and 8 to drive "B-"
for parallel, hook 1 and 3 to drive "A+", 2 and 4 to drive "A-", 5 and 7 to drive "B+", and 6 and 8 to drive "B-"
yeah, I'll wiki it
i'm not sure which is better?
i want to make it a 6 wire to replace one of my motors now
it seems like it has more tourque
maybe my x now that i think about it
is it a unipolar drive (6 wire)?
since it has the most weight
yes my drive
ok, I gave the connections for bipolar
aka 4 wire?
for unipolar there is only one choice
1/3 common... 2/4 a/A?
for uni: 1 to drive "A1", 2 & 3 together is center tap for A, 4 to drive "A2" , 5 to drive "B1", 6 & 7 together is center tap for B, and 8 is "B2"
so 2/3 + 6/7.. should = no resistance
we are in there then
you should be able to short all four of those together and have no resistance
i think i paid $3.50 at the most for this stepper
it was marked $4.50
ther ewas a bunch of 8 wire.. i didn't see any 6 wire.. except for the pancake type
8s are better anyway
you can make an 8 into a 6, but not the other way around
there was some tiny tiny steppers.. for a register tape motor or something maybe
i heard mendelsons is moving...
someone told me the city of dayton bought the building
it's right next to our AAA baseball
or.. going out of biddness
silly question, but do you think the optiocs in a mouse would be good enough to gut?
the encoders in the old mice don't have good resolutions
Not the wheels, just the optics and maybe the PIC
The IR stuff
[03:49:28] <jmkasunich> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?StepMotorWireIdentification
can somebody read that and tell me if its clear?
i scanned through it.. loks nice
i didn't even see any typos jump out
maybe mention something about possible shock at the top lol
i got a tiny bit of juice in my hand
2x2" iron cross inlaid into a pc. of smoked lexan... 100 mins
with 3d skulls inside*
milled x then y
x/z then y//z
.040 ballnose endmill....
axis only chokes on the code when it has to draw the cutter path on top of the g-code path
as it's milling i just refresh to clear some cutterpath
so the pc won't bog down
can emc takeover the ##cnc channel i started to register last night?
chr0n1c: jepler made it so you can turn off the live plot but still have the cone. it is only in head though.
i haven't got balls to try any cvs stuff yet
i enjoy running the machine too much to tear down the code and try new ;)
head=cvs in coder talk right? lol
yes - although it isn't that bad - you can run trunk (used to be called head) without screwing up the installed emc.
i think i broke thier code cap'n!
do coders use apaches indians to spread radio chatter? so the lames don't know what they are saying?
lol... i just watched a documentary on wwII
they should show more things about cnc/machines on discovery
right.. you wouldn't tell me if you did use them.. ;)
skunkworks: Heh, is that good or bad???
skunkworks: did you jsut use a serial mouse?
Jymmm: I hooked directly into the Ir reciever.
each channel being X and Y ?
no - that is only one reciever. Quadature output.
Ok, I guess i need to read up on "quadature encoding" some mroe
[04:30:35] <skunkworks> http://members.shaw.ca/swstuff/mouse.html
that is LawrenceG's site.
ah, ok. I wonder if I draw up an encoder ring with much higher "slits" and get it rinted on mylar film if that would work.
the mice that I had was around 60 lines. to get say 400 I would have had to cut a disk around 4 inches in diameter to get the correct spacing (so it was in proportion to the original disk)
Jymmm: you can't change the spacing between the lines
it has been a month or so.
so for more lines you need a bigger diameter
Well, mouse wheel is about 3/4", I was thinking maybe 1.5 to 2"
that will get you 2 to 3 times the counts per rev
draw it up in cad and you will see..
a mouse is something like 64 counts/rev I think, so you will get a couple hundred tops
jmkasunich: but the optics/electronics should be able to handle it?
if I replace the wheel
the optics don't know the difference
they only care about the count rate
you could even make a linear encoder
Ok, I dind't know if they were fast enough.
you can't increase the speed beyond what they do in a mouse
if the mouse shaft can handle 10 revs per second, and you make the disk twice as big, the new top speed will be 5 revs per second
jmkasunich: Well, i thought they might use cheap IR Rx
(same number of counts per second)
isn't a high res optical mice + a cylinder for the mouse to 'see' easier to do?
high res mice don't have quadrature output
ds3: Optical mice use a tiny CCD camera
they convert directly from camera into serial messages to the PC
right... but why not just use what hte mice report to the PC?
I was getting 20K counts out of it - if you look at the halscope
skunkworks: per rev?
ds3: 1) not realtime 2) not precise
oh you want to keep the rest of the software the same
nobody cares if a mouse reports 3.000 inches but you actually moved it 3.027
jymmm: per second.
didn't seem to have an issue with that but it was about the limit of the base period I had iirc
jmkasunich: you said I couldn't chang ethe spacing, why not?
because the spacing of the two detectors in the optical assembly has to match the slots in the wheel
oh, or they'll "overlap" ?
Ok, so I have to give it more slots, meaing larger wheel.
which way is it on a mouse - the wheel has quad. slots or the LEDs/receiver are arrange to generate quad from plain slots?
single row of slots in the wheel
two detectors, offset by 1.5, 2.5, or some such slot spacings
the half-slot offset gives quadrature
whole slot offset is just to provide physical spacing as needed for packaging
some older mice actually had the A and B detectors on opposide sides of the disk, 180 degrees +/- one half slot apart
what about using the photo diodes quad on a CDROM head as a the detector to generate quad signals? think they may be smaller
(quad as a 2x2 array)
microsurgery to remove it, and photodiodes need amplification
could be done, but time, energy, and additional parts start making regular encoders competitive
removal isn't too much of a problem....
it is just a 4 inch wheel is pretty big
thats why high resolution encoders don't use mouse guts
guess, all this effort is bounded by the price of the USdigital encoders
good fast cheap, pick 2
mouse guts: fast and cheap
cdrom: good and maybe cheap, not fast because you got a lot more reverse engineering to do
us digital: good and fast, not cheap
IMO, mouse guts just won't cut it but I am looking at making a simple measuring/DRO type thing
actually they are pretty darned cheap by industrial standards
just pulling this out of my ass.... what abut a hall effect?
games with magnetic toner?
for a linear scale, the critical part isn't so much the sensor, its what the sensor looks at
oh nm, that's RPM's
[04:50:42] <Jymmm> http://www.usdigital.com/products/e4p/pictures/miniature-optical-kit-encoder-e4p.jpg
I wish that was a hi res image
any idea what speed you can read a capactive encoder at?
Damn, how are they getting 2500 out of that thing?! http://www.usdigital.com/products/e6/pictures/optical-kit-encoder-e6s.jpg
very fine lines
very fine lines ;-)
yeah, I just need some way to get feedback is all.
feed back on your steppers?
is there a quick start guide to adding a page to the wiki? if so, anyone got the URL handy?
ds3: Well, I need some wat to get feedback from my machine, then I can start making cmparisions with other colelcted data.
I could get away with two encoders, but not one in th elong run.
and if the problem I'm having happens to be the xylotex and lack of mid band filtering, well 3 encoders is 1 gecko that does have that circuitry
i want to buy some colors for my website...
i need to buy black grey and blue
* Jymmm sells chr0n1c #FFFFFF, #888888, #0000FF for $29.95 + shipping
black is #000000 isn't it?
jmkasunich: (shhhhhhh, I' have an excess of "#FFFFFF"
(tis okey =)
* chr0n1c forks over boatloads of cash
doesn't that Rx/Tx pair look like it's on the same side? http://www.usdigital.com/products/e4p/pictures/miniature-optical-kit-encoder-e4p.jpg
so tha tthe disc would have to reflect it back?
Jymmm: one cheap alternative is to rummage through Triangle... I got a pair of NEMA23 (~200oz-in) w/US digital encoders on them for $14 total
i wonder if there's a reflector inside the cover
ds3: Where in the store? front?
yeah, I found them on the left side of the entrance
yeah, as you enter... the glass cases is on the right side
there is a pile of small motors, steppers, etc on the left side
near the roll up door?
pass the motor to the left hand side... oh lalala.. pas the motor to the left hand side...
yes.. waiting for this program to cut is driving me insane
in that pile of machenry junk or in a bin?
it in a bin
3 bins stacked on top of each other
anyone want 3 vfd's ans a button matrix out of a royal cash register?
oh, not on one of the shelve.s
there were other steppers with encoders on them but I only got the ones with US digital
ds3: how long ago?
around Feb I think
i got the power supply... and fuse block.. battery compartment... a 6 pos. key switch... and $1.05 in cash out of it
oh, ok. If you see any mre let me know. I think he's only open weekdays iirc
oh.. and a smal solenoid... that pulls when power is applied
Sat too, the last i checked
arrgggg this wiki is frustrating me
ds3: which model# encoders did you get?
ds3: whats the matter?
jmkasunich: I can't figure out how to create a page (want to upload my musing on the Lathe canned cycles)
1) find a page that your stuff fits on, and add it there
2) find a page that your stuff would be linked from, and add a link there
use "pageindex" at the bottom to look for sensible places
I think there are already some lathe related pages
if you want to add, just do it
so it will let me put a page in once i add a link?
the problem is I can't seem to find an "add" button
if you want a new page, edit the page you are linking from.... any text in SillyMixedCase is assumed to be a page name
when you save the edit, the SillyMixedCase will have a ? after it
click the ? and it will take you to a blank page that will become the SillyMixedCase page
ah... that's what I missed.
once there is content, the ? goes away and the SillyMixedCase text on the original page becomes a link
"Describe the new page here." is where i put the contents, right?
the big white box?
ds3: the content goes in the big white box, I don't recall what is in there, might be something like "describe the new page here", just delete it and put your stuff in
ds3: Do you know the model# of the encoders you got?
Jymmm: eh? not sure what you are looking for... all I have is the number I gave you earlier
Oh I missed it, helping custoemrs and all
here it is again then:
400 CPR, 250 is the shaft diameter
was able to only find 2 matched motors so this will be a lathe application :/
okay, my Haas lathe info is in the wiki... feel free to chew it up and spit it back out
The "Data Rate" Column is why I was wondering if the optics in mice are "fast enough" http://www.vishay.com/ir-transceivers/
being so cheap and all.
these are all for IRDA applications
and your point is?
they would not be represenative of what's inside mice
ds3: What, you think I know wht I'm talking about ??? lol
I have no idea at what speed the IR tranceiver in a mouse is
you were talking about mice... and unless you have moved onto wireless ones....
No, just the transceiver inside
the limitation is most likely from the amps on the phototransistor
ds3: In mice there is a IR LED and a IR receiver
yeah. but I hvne't grasped my mind arounfd the whole rotary encoder CPR, Ir thing yet
OH! check this out....
Jymmm: yes, but you can't just pick one and call it 'typical'... a remote control system has a IR LED and IR receiver and those can be as slow as 22KHz
we got a used summagraphics 24x26 digitizer at work!
i got it set up with mastercam/autocad now...
ds3: soe of those on that page are 16Mbps
and i am the only person who knows how to run it ;)
i had to re-wind/re-solder the coil in the 16 button puck...
works liek a chap now
what version of mastercam?
and i had to order two different cables from two different stores to get it hooked up without 83 adapters... lol
they are running v9 at the shop
i only have a 12x12 digitizer hewre.. it's just a toy compared to the 24x26.. it's huge...
digitizer as in a probe or?
summagraphics microgrid II
with a 16 button crosshair puck
for digitizing blueprints and drawings
or for finding the radii on reproduction car parts... to reverse engineer some dies for them :D
why not a laser scanner?
well.. i don't think they wanna spend 30 grand
i been thinking about tryin to build one of the homebrew ones for it
aren't there cheaper ones?
and charge them to scan stuff on my own time
trying to do that myself
i dunno.. i haven't looke dmuch
but they are oldschool
we still have a 10 foot bed planer from like 1813
er uh 1913
planers are cool
makes a great workbench ;)
it used to run on leather belts from the ceiling.. they added a huge electric motor to it and a transmission from a 60's manual truck
we use it to make rocker molding dies n shit
who gets to grind the bits?
they want me to run it.. but that's a lot of steel in that table to be slingin around.. i let the old man do it
it's his machine
he;s taken it with him to three different shops he has worked at over the years
we have the bits wire burnt ;)
or hand grind them
i did a few on the surface grinder
wire burn it out of tool steel.. and some chip breaker relief.. good to go
do they even fit on a magnetic chuck? ;)
no grinding really
well.. we do half bits at a time.. 2 make a 3 or 4 inch bit
so 1.5 or two inches per side
and i grind em seperate
it's amazing what that paner can do
it has the tiniest bit of chatter that gets polished out
has anyone crash it?
and the dies are done ;)
that old man has been running it for 30 years at least
he knows it like his right hand
it looks fun
it even has a 2 axis dro on the head
maybe he crashed it when he was green
i haven't heard any stories tho
we have a shaper too.. a smaller one but it's not wired up.. makes a great work vise
that would be fun to cnc with emc2
i could use a a small shaper
what do ya make?
random stuff... mine is a hobby show
about 8-9 years ago when I was just getting into metalworking, I passed up a chance to get a South Bend 7" shaper for $250
been kicking myself since
they go for 2-3 times that
there is a lot of steel in them even if you dont use it
and cool bearings and ballscrews sometimes
and gears and handles
i saw one run and it was fascinating
i saw a video somewhere in the net...
i never ran one
but i get the idea...
it's liek the planer sort of
ds3 is now known as ds2
a lathe for flat stock of sorts
i wonder what kind of resolution i need to copy old germanmedals from a picture...
i haven't been getting very good results from the pics i found so far
thats wher ethe laser sacanner would come in handy
finally back to my native nick
i need to get a guitar tuner and see what notes the feedrates are making and write an emc2 g-code song
then sample it and add some scratching..
##cnc for general machine shop chatter... to save some of our bs from the logs
yes two #'s (##cnc)
*my bs mostly
my 100 minute smoked lexan engraving finally finished.. and i cleaned it up n took some pics... working on posting them to my site now...
pic's turned out well i think also
Somone was talking earlier about optical mice.... heres' the detials on how they work and such.... (good reading) http://www.mstarmetro.net/~rlowens/OpticalMouse/
[08:23:58] <ohiopctechDOTcom> http://ohiopctech.com/cnc/ironcross/
do you have the original drawing up ther etoo?
no...i wanted to find the guy who did it... first
feel free to msg me the url , I'd be curious
I wish I knew what a #2 center drill was! LOL
look it up on use-enco.com
find a set.. one will be #2
abotu 1/8 shank
[08:31:39] <ohiopctechDOTcom> http://ohiopctech.com/cnc/ironcross/WSCCC003_SKULLBW.jpg
it took me about 100 mins to run it at around 5 ipm average
it's prgrammed for ten
def needs more detail...
Anyone remember seeing these in a catalog ? http://cgi.ebay.com/28-700mm-Digital-Linear-Quill-Scale-Horizontal_W0QQitemZ160035414347QQihZ006QQcategoryZ41939QQtcZphotoQQcmdZViewItem
morning, hmm although it's almost noon here
got all day set up for testing thc/plasma, and got the video camera ready :)
that's the proper attitude :D
alex_joni: yeah, just finished building a new computer box (control box) with full shielding and floating earth
alex_joni: now I can bring 30.000V sparking to 10cm off the monitor and it doesn't even flicker so I'm pretty sure I won't get any problems from RF or grounding issues this time around
what are you up to on a sunday ?
right now feeding
was pondering getting out for some tennis
alex_joni: sounds like a great way to spend a sunday
weeeell, not that thrilled though
I already went yesterday, after a long while
and did some running afterwards
so today.. I'm .. uhm.. a bit sore
alex_joni: hmm just give it 10m and then you won't even notice :)
yeah, it's those 10m I'm worried about
not really worried..
but it's just way nicer to slack in bed with a laptop on my lap
wouldn't you agree?
yeah,, but once you get over it ....
how are you?
martn_lundstrom is now known as martin_lundstrom
great, prepping up for a whole day of plasma testing
martin: will make some videos
and the config seeemes to be working?
martin: everything seems to work pretty good, but I need to tune the THC
too much up and down?
martin_lundstrom: velocity v.s deadband vs height
I mounted the Z axis on my second table.
martin_lundstrom: got it moving and all ?
I did not yet connect the computer
more or less next step
I wish you good luck with the testing!!
martin_lundstrom: great, thanks, I will make sure to let you know when I have videos
Rugludallur: decided to try it out afterall
alex_joni: 10 minutes :)
lerman_ is now known as lerman
ocean is now known as patrick_r32
Is backlash comp working as expected in the latest release?
'as expected' ;)
I think ray tested it and it worked ok - I haven't tested it yet
there's still the maxvel*2 effect in it, right?
yes, or possibly accel, I don't remember the details
Thanks. It was in reference to this http://www.cnczone.com/forums/showthread.php?t=36758
he referenced this http://sourceforge.net/mailarchive/message.php?msg_id=1172421008.11655.26.camel%40localhost.localdomain
* skunkworks has not used backlash comp
[15:11:59] <skunkworks> http://www-03.ibm.com/ibm/history/exhibits/space/space_2361.html
ah - the good old days ;)
I wonder if they found a way to thread the core by machine, or if it was all hand threaded
I thought a lot of core was threaded by hand, but I don't know for sure how they did it in the later days
I wonder if a convetional 'loom' would work with some mods
I can't belive it actually worked at all ;)
2mb in ring memory O_O
I think I have some boards with 8X8 grids on them from some old business calculators
what's up guys ?
hi skunkworks :)
long time no talk
long time busy :)
what's new ?
They keep plunking out new verions of emc2 :)
have to try it
I am still trying to find time to work on my conversion.
* skunkworks sitting here at work waiting for a backup to end so I can shut the server down.
what have you been up to?
I'm very busy around a fishing forum
that is nice. what are you catching?
I suppose it's called bass
or something like that
well, i'm also working around a small robot using Linux 2.4 kernel
it's called I-droid01 and it's 90% ready
some is already on my website
[15:33:25] <giacus> http://www.giacus.org
see gallery, idroid-01
my cousin is pressing me to start a new projetc
so, I'll need to ask something about that to you :D
i wanna get some help regarding compiling emc2
I think we'll use emc2 for that :P
cnc_engineer123: ask away
i am getting some errors during compilation process
cnc_engineer123: switch to win vista!!
can you post the errors on pastebin.ca?
copyright attitude :D
crap - biab
what errors ?
someone need to know that in order to help!
when i issue the make command, it seems make is recursively making the compile process
no much more info, about compiler you're using and other ?
looking at the sphere ..
and Jymmm ?
where's Jymmm ??
did you seen him lately ?
i have emc2 live CD installed with ubuntu ver 6.06. Then I downloaded the dependency packages to compile EMC2 using the command "apt-get install build-dep emc2"
paste the errors on pastebin as skunkworks suggest
be sure you did apt-get update/upgrade too
anytime I came here I feel the power, really
the power of copyleft attitude :P
and hackers attitude :)
i'm happy to see the project going's on ;)
Give me a lever long enough and a Free OS to set it on, and I can move the world. :D ;)
I'll be back soon
it would be fun to be in idaho today: http://www.boomershoot.org/
'reactive targets' :) ( things that go boom)
challenging ones - 3-4", at several hundred yards
you gotta earn your boom
lerman_ is now known as lerman
bought a cheap new mower today. wasn't the cheapest as I wanted mulching.
so that means I have to mow
[17:40:01] <lerneaen_hydra> http://www.youtube.com/watch?v=nFLEakMpQWA
lerman_ is now known as lerman
you do know that is fake.. right?
still fun :)
lerman_ is now known as lerman
what's up folks!
* Skullworks_PGAB is lurking while catching up on the email list...
* ohiopctechDOTcom fires up the afternoon paper... and tries to decide what project to work on today
lerman_ is now known as lerman
if you were going to make rails for a lathe x-slide to ride on..would you use 3/4" W1 or o1 drill rod?
*i ordered some w1...
gonna try that...
I have an idea for the tool setting issues that have been in the recent email digest.
Skullworks_PGAB: go on, he'll read when he gets back
W1 vrs O1 is fine - just wipe it down with some light oil before storage
W1 rusts quick
topic was in response to tool setting and loading values into the tool table using probing
i shoulda ordered stainlesS...
SS is softer unless you go 400 series
and 400 is magnetic and will slightly rust too
oh..what about black oxide'ing them? should help right?
Drill rod comes centerless ground in about 3ft lengths standard
i build machines all the time but we usually pay a designer to draw them and do the steel selection.. ;)
its very straight
yeah i got 2 3 ft lengths of it
VERY on size
only thing better would be CPO bar
(Hydrolic cylinder rod
ground, polished and hardchromed
made from half hard carbon steel
my indicator is coming tomorrow.... mo more out of tram z axis!
anyway - for the tool setting issue...
it cuts on a 10 degree angle...
I think its time to expand beyond the NGC spec as they left out some items
Specifically - G10 L1, which is used to load values into tool offset locations
there is a message on my machine... "call me back dick!" with no number.. and i don't recognize the voice
well I got a replacement fan for the server mounted, lets say it needed some modifying.
G10 L2 is allready supported for loading values into G54-G59 and the "extras".
did everyone check this out .. http://ohiopctech.com/cnc/ironcross/
it's nothing special.. but emc2 cut it
that done with an engraving cutter?
a center drill
1/8 shank .040 drill point
2 - your sure it isn't a 1?
i've just always found i like the cut of the tip of the centerdrill better than and engraving cutter
ehh... maybe 1
i thought it was a 2 though
#2 has 3/16" body ( I use them by the dozen)
I get mine custom made with 90 or 82 degree angle vrs 60
that may be right!
leaves the perfect chamfer for tapping up to a #8 screw
i never said i always think about what i am typing before i type.. lol
yeah... i use the center drills for more than just center drilling
i always use them for engraving...
the bigger ones work good for bigger letters also
* Skullworks_PGAB runs to check his penne
they stay sharp longer than engraving cutters
even if they are carbide
ohiopctechDOTcom> they stay sharp longer than engraving cutters <<< in your application.
thats because a C-drill has better tip support and can take more abuse - like a high T.I.R. spindle (wobbly)
they tried to mave me use the 3 sided engraving cutters... they would break halfway through the job... always
when i was getting paid to engrave steel guages*
I used single flute 42 degree cutters with a .007 flat on the tip
.014" depth in 6061 or 6063
tool lasted 2-3 weeks - approx 100 hrs cutting time.
i usually cut between .003" and .010" with the #1 center drill
i do plastic and wood and metals with em
I needed a deep but narrow cut
lerman_ is now known as lerman
it even worlks great for a tiny endmil in ofter materials
panels got 1 coat primer - 2 coats base color then the engraving was paint filled
Just this once .. here's the log: http://www.linuxcnc.org/irc/irc.freenode.net:6667/emc/2007-04-29.txt
i'm all over the logs babbling
your cronic - right?
* skunkworks doesn't look at ip
hmmm is one proccessor is running 105 - and one is running 120deg
same brand/model fans?
same heatsink - different fans now
does one do file system and one do graphics?
fans dif speeds?
I think everything does everything
if the ubuntu live cd would boot on my xbox... i could do usb-parport adapters ;)
no - you can't
it already runs linux... a dynebolic live cd
usb-paraport is useless for EMC
i didn't know if there was drivers for the adapter in linux
that would make it a real parport.. would be nice
but Bert's 1st gen USBCNC card used EMC1 embeded
real for printing - not real time capable.
got a link i could check it out?
Skullworks_PGAB: I didnt see mention of a pic or url for the panels you mentioned
i got google nvm
the panels I engrave?
you said panels primer paint and backfill, we want pics!!!
old stuff for Hughes Aircraft Sat division?
with case on - 111f and 122f
Alright, I must be missing a jumper, just changed the CMOS battery yesterday adn still lost all settings.
I need to get the jumper settings for that Dell Dual CPU server I was working on - 2nd CPU stays cold
cold as in not being used?
I loaded Ubunto server on it
check BIOS settings, and make sure you have the latest BIOS too
so no GUI tools yet
On my dual, I had to add in linux dual suppport
but desktop not server
ubuntu that is
In emc mode, I got 1 cpu and 1GB ram, in i686 mode, I got 2 cpu and 2 GB ram
I should just wipe the drive - do a W2K load for hardware testing - then wipe it again
Jym - thats just strange?
Skullworks_PGAB: Nah, cradek found that it's intentionally set that way the RT kernel doens't support 2GB ram
but what about 2nd CPU
it can't use anything over 1gb
good to know
* Skullworks_PGAB wonders if that is in the Wiki FAQ
Skullworks_PGAB: No support for it unless I use experimental SMP RT kernel
I have a dual slot 1 and a pair of pIII-600's I would love to try
put RT on #2 and X and gui/frontend on #1
I'm running on a Tyan S2518 mobo with dual 1GHz and 2GB ram.... it flys when I boot into that kernel
P3 that is
love the pcb sitting on top of the PS =)
[19:29:24] <ohiopctechDOTcom> http://forums.ipodlounge.com/showthread.php?threadid=74274&perpage=15&pagenumber=1
<- sweet machined alum ipod case...
a little writeup on my 1st of 3 GTW6400 dual servers. http://www.skullworks.net/beast.html
Hmmmm they designed the PS connector opposite side from DIMMs
Jymmm: did you figure anything out
still using #3 - with a pile of 74GB Cheetah drives
anonimasu: Besides that I'm nuts?
anonimasu: No, was thinking about it all night at work. I cna get encoders for $20/ea but they only do 300CPR, ds2 suggested hitting the local machine surplus and maybe find some steppers with encoders there, he got some make if FEB
two for $14 with encoders
Hmmm, I wonder if I have to reinstall to get ubuntu to see my dual paprport PCI card.
Then I'd have 3 paraports total
* Skullworks_PGAB has been shooting in the house, pics that is...
Yeah, blame the holes on the camera
shot two of the engraved panels
no - holes were made by a CNC Strippit pucnh
I meant shooting the house
not put any holes in the house since before Y2K
Ubuntu - is not windows... I just plugged in my camera for giggles and everything just worked.
* ohiopctechDOTcom is getting a visit from the hot blonde chick soon ;)
* Skullworks_PGAB thinks two words - Web cam...
ohiopctechDOTcom: You raising chickens now, huh?
oops thats been done... never mind
* Jymmm thinks consessions
"GET YOUR BODY CONDOMS RIGHT HERE!!!"
* ohiopctechDOTcom has a mini color wireless cam that runs on a 9v batt
* lerneaen_hydra pops in
and an ati tv all in wonder card
* ohiopctechDOTcom giggles
That might be some G code...
* ohiopctechDOTcom thinks that's OG code...
* Skullworks_PGAB consults the manual under DO Loops, O words andother topics.
hmm.. I leave for half an hour, and this happens
I would have expected a webpage with applet by now
I do *not* want to know what it's streaming
22:15 < alex_joni> I would have expected a webpage with applet by now
yeah, from ohiopctechDOTcom
not really.. but let's leave it at that
what do you think about a tool setting macro that could load an offset directly into the tool table?
hmm.. not sure
it depends what you understand under tool table
if it's the current definition (file with numbers in it), then I'm not so sure
this is for users who are running collets or other non-repeatable tooling
if it's emc's internal representation of it.. then yeah
I guess it dosent matter if you use the table or not.. really it's the offsets you want to set..
well - IIRC the tool table is a file loaded during start up
offset changes require file to be reloaded
details I say
well - I propose we add support for G10 L1
Skullworks_PGAB: if you want this to really stick, I suggest mailing list or feature request
which does for tools what G10 L2 does for G54-G59...
(not that people don't read this.. but it usually gets forgotten in 2-3 weeks)
alex_joni: what did you say?
Jymmm: can't remember
who are you anyways?
alex_joni: I'm you, I think
I'm the one your momma warned you about
you blonde, apparently stupid, and wanna get pregnant by me?
YES! YES! OH GAWD! YES!
* alex_joni shrugs
did your mom really tell you that?
btw, you gotta hurry if you mean it..
I wouldn't be surprised.... Mom just looking out for her boy is all
I'm less than a month away from getting married :P
OK - I'm feeling realy stupid... What do people use for an FTP client in Breezy?
Sounds like you are REALLY enthiusiastic about getting hitched
do you mean gui?
I can pull down stuff via Firefox...
but to put
nix cli is rusty...
lol, try M$ CLI
ha - I'm down right scary in an M$ enviroment...
I got nix tools on m$ cli
I have the power of the dark side
find & grep & co
I got wget and less too
M$ needed less
pico would be nice too
M$ always needs more
M$ needs liposuction...
more or less
in a world without walls & fences..
who needs gates & windows
but I had the camera on the emc box - figured I'd just move the pic to my ISP
Skullworks_PGAB: ISP doesn't do ssh?
Quote from Firefly/Serenity "Sure would be nice if we had some grenades..."
its all linux boxes
have cgi-bin support if I care to use it
but I'm useless with Perl
nearly useless with PHP
and I would love to take a class in it
theres a really good online tutorial
but only places that teach it local are high priced private colleges
nother stupid question - do I need to "unmount" the camera, or being usb can I just yank the cord?
on e way to find out
Skullworks_PGAB: is it a mass-storage type camera or PTP camera?
usb mass store
have ftp running in term win
I'm in proper directory of ISP
or put /path/to/filename
now must figure the right file source path...
hey robin ltns.
just shifting from my laptop install of mach3 (which shall not be mentioned here) to my old bdi machine which is now running emc2 and the world is brighter than normal.
picnet: no worries about mentioning mach3 in here
we're tolerant people ;)
but it's good you've seen the light :P
picnet: so you're liking emc2?
i used emc ages ago, this was before the axis display etc
yes, i have a siegx2 mill converted & just plugged in the old cable to this box, configured emc2 and it seems to move around ok :)
* Skullworks_PGAB is working on doing an X3
just getting my head around the new stepper stuff. specifically transfering the max vel/accell from mach to emc2.
its all apart all over the house - lucky I'm single...
Skullworks_PGAB: for some values of lucky ;)
OK a panel pic
Skullworks_PGAB: Dont listen to alex_joni, He's whipped
just held it up at an angle to reduce flash glare
Jymmm: not really :P
* Skullworks_PGAB would not mind getting whipped someday.
Skullworks_PGAB: bdsm? lol
but I have 1800lbs of lead here - no GOLD
* Jymmm invites Skullworks_PGAB to /join #bdsm
womens wantz the flash & cash
and the semen
biological clock and all
BSD.. not an emc O/S
Skullworks_PGAB: our CVS server runs on BSD :P
I used to run Gentoo as a bastion host
keep the crap out
anyway - here is a pic of a hughes panel before any paint/primer/fill
btw emc2 works fine in a pIII-500 / 384Mb Ram.
[21:06:56] <Skullworks_PGAB> http://www.skullworks.net/include/DSCO0277.JPG
This is your custom 404 "Not found" Error page.
[21:08:07] <Skullworks_PGAB> http://www.skullworks.net/include/DSCF0277.JPG
haha.. no webpage...
were it not for bad luck...
no jave webcam applet
file type is lower case...
[21:10:39] <Skullworks_PGAB> http://www.skullworks.net/include/DSCF0277.jpg
you do that?
That link actually works...
looks nice, but where's teh mud flap chic?
did you do the brushing on the surface?
Skullworks_PGAB: Can I ask how?
Timesavers Industrial - wet sander - huge brute
24" wide belts
power tractor feed
my favorite pre-anodizing finish: air-powered DA sander with 120 grit paper
* Skullworks_PGAB is lazy - just tosses parts into the vibratory wet polisher
I hate emissions....
* ohiopctechDOTcom rofl
* picnet tips hat @ robin.
Sorry Jym - Move here, We just canned the entire emmissions program
no more inspections...
dayton jsut got rid of thier e-check stuff also
Got a ck engine light months ago. Had my friend pull the code from the computer. bad sensor. Replaced the $100 sensor and got awesome gas milage the frist week. The second week I got 100 miles LESS per tank than I have since I'd had the car.
Now I have to get a scanner and see if there's a code still set and clear it. or replace the sensor again. Under 1yr warranty.
The REALLY suck part is Ford knew about it, but never did a recall, just a notice. bastards and they won't cover it under warranty
I'll toss on the old sensor and wait for the ck engine light to come on again, hopefully the mileage will return to normal.
voluntary recall usually only happen for safety issuse
ok - did that CLI ftp...
Gas is up to $3.36 now too.
HF has a scanner for $40, will work on all ODB II 1996 and newer cars.
I honestly think the last time I did that in linux I was using a new 80486SX-25
I was anti mouse for a long time
I could fly thru wordstar using only KYB formatting commands... why take the time to remove your hands from the KYB?
now I'm kinda GUI'd
I just wish there was a good cad/cam for linux
then I could dump most my win boxes
i tried mastercam/wine...
i forget what happened it was a long itme ago
i shold try again
or crossover office maybe/mastercam
how do you fix joint <insert favorite joint number here
I allready only use OOo
picnet steppers or servos?
steps per mm is 666.67 , velocity was 1073 in mach3, acell 100mm/min.
only used servo's myself so not read into steppers yet
might be your missing steps ?
i couldn't get base to stop crashing
best get sombody who knows more about steppers
i was trying to edit the database/invoicing thing from work
picnet: joint error means it can't output as many steps as you want
picnet: you're getting following errors .. right?
picnet: what's your BASE_PERIOD?
in the ini..
opps + 0
I hope you missed a 0 there
that means 50 usec
500mhz box tho.
right.. you can probably mess with that a bit
try 30 or maybe even 25 if you're brave
as you decrease the value you'll see that the pc gets sluggish
alex_joni: do you have a good link about robot kins?
then it's time to increase it a bit
anonimasu: what'cha interested in?
picnet: there's an excelent description here: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl/emcinfo.pl?TweakingSoftwareStepGeneration
alex_joni: the calculations involved
thank you, ill go rtfm
anonimasu: I suggest you google for D-H
thoose calculations look pretty sane..
[21:34:07] <alex_joni> http://generalrobotics.org/ppp/Kinematics_final.pdf
here's an intro
Skullworks_PGAB, here ...
Skullworks_PGAB, try this:
perl traing docs, very concise and readable
now I need a sub-routine that makes free time
or even cheap time
I do have a ubuntu server box to play on though.
so I'll keep the cgi-bin sys crashes local...
alex_joni: that dosent look too insanely hard..
anonimasu: who said it was?
the problem lies in the details :P
small things like joints jumping from -180 to +180
which matematically is no difference
* alex_joni grins
and the like..
just won an EDM machine on ebay
[22:13:39] <feoc2> http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=160108710903
there was a space in the workshop?
night, machine is up and running ok now.
no following errors :)
right so what exactly is it an EDM does?
depends on what kind of EDM
the one i just got on ebay
just wanted one to play with
I want one ;)
I wish I could buy a bigger basement on ebay
i rent a barn from a farmer
barns have no heat
fine for storing non-sensitive stuff
not so good for things that rust, or contain electronics, or both
and not so good for actually working with those things
(unless in a mild climate)
im fitting it out with a enclosed bit for the machines
and a spray booth
so will have heating
barn with electricity and heat isn't really a barn anymore ;-)
no i guess not
but it works for me
next thing on my to buy list is a cnc grinder and an autoclave
(when I think of barn, I think of drafty, with lines of sunlight across the floor from the gaps between the wall boards
wasnt too far off that tho
only better coz im building inside walls
[22:37:25] <jmkasunich> http://www.makeitmacomb.com/historic_barn_tour/barn_photos/1-3-Brock.jpg
no mothers in the basement?
[22:38:21] <feoc2> http://img.photobucket.com/albums/v280/rallyslag/31012007175.jpg
more like that :)
cee-ment floor even... high class barn!
right bed time
work in mornin
stay up any later and ebay will take all my money
jmkasunich: If I got the 300CPR encodes, do you think I could get away wit thme, or show I really go for the 1200+ count ones?
don't ask me
damn, my brain cant type anymore
I really think this whole encoder thing is not the way to solve your problems
as for whether 300 cpr will do the job, that is simple math
you have 1600 step/rev steppers
a 300 count per rev encoder will not tell you if you lose 1 or even 3 steps
Oh that's right, sorry I was still thinking 200CPR steppers
if you are losing steps in the signal chain between EMC and the drive, you can lose one microstep
I'm not using them to "solve" anything, just help determine what the cause of the sisues I'm having are.
if you are losing steps in the motors, you can only lose them in units of four full steps.
ok, that makes sense.
a complete cycle of the magnetic field is four full steps
if you grab the shaft of an energized stepper and force it to turn, it will resist harder and harder, then you will get it "over the hump" and it will snap into a new stable position
on a 200 (full)step/rev motor, that new stable position is 1/50th of a turn away from the original position
max resistance is at one full step away from the stable position, when you get two steps away the resistance goes to zero, when you pass 2 steps it starts pushing toward the next stable position
microstepping breaks the cycle down into finer chunks, the the pattern of the magenetic field doesn't change, its still strongest at 1 full step away from the stable spot
I'm reading the gcode page, but I still dont quite get the differnce between G0 and G1
G0 is rapid and goes as fast as it can
G1 is cutting move and moves at a rate set by the last F word
si basically G0 "bypasses" any set F words?
any other differences?
I don't think so, but I'm not the expert
That's ok, I just wanted to make sur eI understood the differncebecause you mentioned testing using G0 and not G1
pronounce G ut-oh and G one
Hey, do you guys know of any websites with the cheap china linear scales?
one of the importers is on ebay - website not working yet
Shar tool inc.
Yeah, I saw one on ebay.
[23:26:18] <Jymmm> http://stores.ebay.com/SMW-Precision-LLC_Linear-Scales-Horizontal_W0QQcolZ2QQdirZ1QQfsubZ4QQftidZ2QQtZkm
Discount machine is the ebay name for shars
[23:27:40] <Skullworks_PGAB> http://stores.ebay.com/Discount-Machine-Shop_W0QQssPageNameZstrkQ3amefsQ3amesstQQtZkm
SMW is only a retailer
I bought there 3 axis glass scale DRO for the IH mill
package deal :)
I wish I could see a detailed pic so I could determine if I could mount it on my machine
what is the machine?
a gantry router
[23:32:29] <Jymmm> http://cgi.ebay.com/24-600mm-HORZ-DIGITAL-ELECTRONIC-DRO-QUILL-BRIDGEPORT_W0QQitemZ260001115191QQihZ016QQcategoryZ12581QQcmdZViewItem
got some place to machine delrin or lexan?
I'm assuming that the LCD is what actually moves
only my router
but they also have a remote display with AC power so your not going thru batts like crazy
does it come with a dat cable though?
the dispaly package would
thats an add on option
when it says 24" is that literally it 24" or longer than that?
unit is longer - reads 24"
you lose some at each end for mounting
some of the 24" you mean?
a 24 reading is like 27"
26 or so long, you lose 2" for mounting, 24" travel
I'm just not sure if I could mount it on my machine.... pretty tight on the side of the rails
note: they do not like to move too fast
Do the DRO's usually have an data out from them? Like sclaes --> DRO --> computer?
crazy rapinds... they might error out
ok, nm then.
I'll see what I can find come monday at Triangle.
(a machine surplus store)
DRO's don't - but wiring up a data spliter is possible I think
Ah, well if they dont deal good with rapids, no use even trying.
how fast can your machin move?
[23:43:44] <Skullworks_PGAB> http://www.romaxxcnc.com/
watch the jog video - or the engrave vid
resolution is going to be pretty low.
video or machine resolution?
These types of belts have been
powering large industrial CNC machine axis's for years with tolerances
and repeatability in the ten-thousanths of an inch
and that is 'industrial CNC machine'
the power of marketing... how to lie without lying
yes, tooth belts have been powering industrial CNCs for years
running from one pulley to another, and the second pulley turning a ballscrew!
I can't even find what resolution it actually has.
I was half expecting them to say something about 10X microstepping gives you ....