i have an emc question......
if i download the latest cvs head version, will i get the adaptive feedrate function?
you might want to grab the v2_1_branch which we're stabilizing for the 2.1.0 release
and if so , how do i enable it, it has changed since the last time i dl it...
umm it's an M code now I think
let me see if I can figure it out
there's also a feedhold pin now and some other stuff
wow, nine inch nails are coming thru nicely on my fredhly tubed amp tonite.....
M52 controls it
M52 P0 = enable adaptive feed
M52 P1 = disable adaptive feed
no I got it backward
M52 P1 enables, M52 P0 disables
oops wrong keyboard
in the same way, M53 controls feed hold
gonna try it out tomorrow, at the shop
M50 controls feed override, M51 spindle speed override
a lot of new controls
any you guys into vacuum tube audio?
I fix antique radios sometimes
but not into the audiophile stuff
hope you're not one of the guys who steals the 45s out of good old radios
no sir, i leave old radios alone....they need to stay that way....
(there are lots of nice current manafacture tubes, people who screw up old stuff piss me off)
glad to hear that
old = good
you cannot beat a dynaco stereo 70
I always see projects online where some dork scrapped the guts of a good radio and glued his ipod inside it instead and thinks he's done something cool
and a flat panel screen, don't forget that!
obviosly he does not understand how to load a tube....
have a photo of your amp?
at the moment i listen to a Sonic Frontiers Anthem 1 Integrated
heh, no idea what that is
say atwater-kent and I'll know :-)
using an A/D/S cd frontend along with a magnum/dynalab FT101A TUNER....
all hooked to a set of Fulton Tempo speakers........
an old friend of mine Bob Fulton was an audio pioneer, a genius with speakers.....google him too...
god rest his soul
VPI HW19 mkIII turntable with eminent technology air bearing tonearm.....(took a mortgage out for that!!!!)
all made in North America i miht add.....
i do have a fischer fm200b....a very sweet all tube stereo fm tuner.....
so if i were to put the M52 P1 in my ini file under RS274NGC_startup_code it should be there???
i have an adc channel on the motenc board set for it.....at least it used to work with the old G code
hey skunk what be da hps bro????
03jepler 07HEAD * 10emc2/src/Makefile: funit-at-a-time is implied by -O2 where supported; workaround for bdi4.50 brain damage
jepler: I remember you saying you found a non-live install on the dapper CD but I don't see it. what's the trick?
I think he had the wrong cd. (do I actually remember that bit of info?) something prior to dapper.
ok that would explain it
it was a dapper pre-release CD, but it said Dapper when it booted, IIRC
though that could have been the one that asked if he wanted to update to Edgy when he ran Update manager ;)
hmmm - which was the magic recipe for doing the RT kernel patches?
need help with folling
need help with setup emc2
I get 0 follow on x and y axis can anyone help a newbie
* flyboy slaps jepler around a bit with a large trout
ANY ONE HERE
ValarQ is now known as Vq^
Well I finally started looking at the mechanics of the k&t. It is going to require a little 'engineering'.
Come to find out - x they spin the lead screw. z they spin the nut. :(
it is unreal how they get the motion to Z (they used the same servo for x and z). they have a shaft that is parrallel with the x lead screw that has 3 ball slots in it. form there it changes direction and then gets coupled into the z axis nut.
I mentioned to my father the other day.. 'wouldn't it suck if they spun the ball nut on the z axis?'
you can't escape what you're afraid of
thought creates reality ;)
SWPLinux_ is now known as SWPLinux
alex_joni: big plans for the weekend?
skunkworks: yeah.. a long sleep :D
lerman_ is now known as lerman
lerman_ is now known as lerman
cradek: yes, I had the wrong CD -- it was a dapper beta or something
it's a little too bad they took it out, but I like the new install, especially how fast it is
there's still an "alternate install" CD image if you want the desktop system packages but a text-mode installer
it's just not on the same media
even the ultra-cheapie motherboards are starting to see support for >4GB RAM onboard: http://www.newegg.com/Product/Product.asp?item=N82E16813157093
jepler: how long did it take you to get the fpga?
skunkworks: If I remember correctly, I ordered it on the monday before thanksgiving and got it on friday
ok - it is supposed to be usps 2day. But it depends on how quick they get it out ;)
and I have never had luck with usps package tracking
(compared to fedex/ups)
yeah it's pretty useless
you sound anxious to get this little toy!
yah. Time is always the issue though :)
with the cool performance cradek has gotten and my bit of playing. It really looks like a viable solution.
those performance graphs of cradek's are with emc's pwmgen, not the fpga
right - I mean the simple h-bridge - emc pid loop
I'm virtually convinced that emc's pwmgen is good enough for servos with a modest time constant .. it's the quadrature counting software can't keep up with
Right - and if I want higher resolution encoders (which I am not sure if I absoultly need yet) the fpga is great.
plus just a snappier machine :)
I am trying to remeber if our toshiba vfd has +/- 10 volt in as an option.
why was 7 afraid?
because 7 10 11 </octal joke>
I don't get it
I botched it
it's "why was 6 afraid? because 7 10 11"
why would 7 be afraid - if 7 ate 9
100 dollars of any 1000 dollar order from tower hobbies ;)
jepler: the fpga-work you did is very nice
any possibility to put some stepgens in the the fpga and increase the max pulse frequency ?
SWPadnos_ is now known as SWPadnos
oh, one thing I wondered, in emc, the current backlash doesn't respect maxvel and maxaccel, right?
so what accel and vel does it use?
it can't be infinite, becuase then it wouldn't work at all
the answer you seek lies shrouded in mystery
maybe jmk would know
oh, btw, how strong is a strong stepper that doesn't cost lots?
it's not in stepgen, I think
oh, I see
that's a question like "how long is a piece of string"
strong relative to a model airplane, or strong relative to a dump truck?
yeah, I know..
strong enough for 1:1 drive of a smaller mill
something like 2.5mm/rev
ah - something like 150-300 oz-in then
what price range is that?
maybe even less
damned if I know - I'm a servo guy ;)
and I only shop on eBay
oh, I see
anon should know
it also depends on whay quantity and reason you're looking for
a single retrofit for personal use, vs. a lot of motors on an ongoing basis
oh, this would be three motors for a single retrofit, yes
most any new stepping motor is 'expensive' :)
oh wait - you said minimill, not micro-mill (like sherline)
you my need more torque than I mentioned, if you want good performance
[16:49:42] <SWPadnos> http://web6.automationdirect.com/adc/Shopping/Catalog/Motion_Control/Stepper_Systems/Motors_-z-_Cables
Lerneaen_Hydra: it does obey max vel and max accel
that's not bad - 434 oz-in for $99
the only problem is if TP is also scheduling a move that obeys max accel and max vel at the same time
oh, then I'm in buisness :D
not bad at all
$39 if 276 oz-in will do
the two moves will be performed together thus getting at 2xmax_vel and 2xmax_accel
alex_joni: then what's the problem with backlash?
I saw a task on sourceforge
not so nice
but on reversals (when backlash is needed) it's unlikely the TP commands a full speed move
um, why hasn't that been fixed years ago? it sounds like a really nasty problem
because it's hard to fix it right ;)
I'm not sure how you could do it properly
also, there are assumptions people usually make about backlash that aren't true (like "you're only moving the motor/screw, so there's not as much load")
[16:57:53] <Lerneaen_Hydra> http://lerneaenhydra.shacknet.nu/images/images_other/random_other/img_6280.jpg
<-- this is the mill I was looking into
only 11 000sek +tax
quite cheap for sweden
[16:59:07] <skunkworks> http://web6.automationdirect.com/adc/Shopping/Catalog/Sensors_-z-_Encoders/Encoders/Light_Duty_Standard_Shaft_(TRD-S_Series)/TRD-S1000-BD
if it already has ballscrews, that's a great deal
81 dollars - not bad
not bad at all. even USDigital would charge extra for that one since it's 1000CPR
ok, I'm definetly going for steppers than
skunkworks: nice catch
SWPadnos: acme screws
other than it is 12-24v open collector
then get VD :)
that's an awesome price for a 200KHz, differential drive, 1000CPR with index encoder
though I haven't looked at the difference between "light duty" and "heavy duty" yet ;)
I don't think it has an index - does it?
the specs say they do
but I could have been looking at the wrong section
hmm - it says 2 phase plus home posision - wow
unfortunately, they don't have the size I'd need for my motors
I don't see any index on those encoders
those are ~2" diameter and my motors need the 1.5" :(
the wiring diagrams and spec sheet rrefer to Z and "home"
LH: that mill looks pretty small, so the smaller motors will probably work
you can check to see how much torque you would need if you have a hanging scale (the kind in supermarkets, used for checking produce weight)
especially if you can use one that can record the peak (sometimes used in high school physics lab experiments)
SWPLinux: where where you seeing the wiring diagrams?
I clicked on "specifications", the cable color codes are beneath the device chart
I get this 2-page document and I don't see wiring diagrams. http://web6.automationdirect.com/static/specs/encoderld.pdf
So do I
SWPadnos: those for ~$40?
LH: yes, they may be sufficient
nice, definetly in my price range
as long as they're <100 then it's ok
in fact, you'd probably have a hard time mounting the larger motors to the mill, the NEMA23 (176 oz-in or so) may be appropriate
oh - the 276 is NEMA23, so tha's good
and the extra $10 is probably well worth it :) (vs. the 166 oz-in)
you should definitely get advice from some machine expert like Ray first though - I'm mostly theoretical in this realm ;)
yeah, right now I'm just trying to see if it's remotely possible, and it seems to be with my budget
The pdf that you are getting for the encoders
oh. one sec
I was looking at the medium-duty line, so that could be a difference
[17:39:23] <SWPadnos> http://web6.automationdirect.com/static/specs/encodermd.pdf
ok - I see it. The light duty doesn't have the wiring diagram
but in the description it does say 'Two-phase + home position'
SWPadnos: what would you estimate a servo+encoder for the same machine would cost?
from AD, shitloads ;)
they only seem to have AC servos, and they're pretty expensive
oh, so >$100 per axis?
:) most likely
more like $500-$1000/axis
the motors alone are $300 or so (and up)
right, steppers it is
for small machines, that probably makes the most sense, unless you want to buy some cheap servos off eBay
is it common to have ones with >200 steps/rev?
Lerneaen_Hydra: what are you using for drives on your lathe?
hmm, then I'll need microstepping
I think only 5-phase steppers are generally >200 steps/rev
steppers? No, 200 steps/rev is most common
I don't know, the ones that came with it. (very very old unipolar 72step/rev)
our 5 phase steppers are 1000 per rev.
72 is common for small steppers - like the ones used in floppy drives
these ones are quite big though
8" floppies ;)
50x50x80mm or so
or 14", if you want to go way back
hmm, ore like 50x70x50
(or maybe they are 500 per rev with half stepping > 1000)
don't really know - the drive works and that is as far as we went ;)
they do around 1000 steps/sec
with the driver that came with
remember - microstepping doesn't increase resolution, it just improves smoothness
hmm, so 1:1 with a 2.5mm/rev screw is not doable?
if 0.0125 mm resolution is OK, then it may be fine
but I'd check the torque requirement first
oh, 0.01, right, I read that as 0.1 first :p
0.01 should be good enough
that would mean that half-stepping should be enough
maybe even full step
half stepping may increase resolution - I[m not sure
it depends on the driver, I bet
I think it does
it should be possible though
Lerneaen_Hydra: that looks like it has a lot of z travel. Nice
yeah, X and Y too
[18:01:26] <Lerneaen_Hydra> http://www.optimum-machines.com/products/milling-machines/bf-20-vario/index.html
for the large model
[18:03:06] <Lerneaen_Hydra> http://www.optimum-machines.com/products/cnc-pc-controls-and-adapter-kit/61/index.html
they even have a cnc-ifying kit
though I'll make my own one
I wonder what gear ratio they have
28ipm - Should be able to do a lot better than that :)
any idea of the lifespan of a mill of that class? (dovetail slides, acme screws)
[18:19:48] <Lerneaen_Hydra> http://img.photobucket.com/albums/v80/harnett65/Part%202/pic321.jpg
<-- this object is two seperate peices of wood that were attached to each other. how was it made? (it took a while for me to get it, really cool puzzle IMO)
the key is circular
that's not how I solved it
heh - I just looked fora second or two - that was the first thing that popped into mind
ie, the ywo keyways you see are the ends of a quarter circle of the key shape
nit two perpendicular lines
oh, it looks the same on tha back
ah - I didn't see that part :)
in da hood man
well, in that case I'd just make two "key lines" on parallel tracks, between adjacent edges (pointing directly away from the camera, in that shot)
quite a cute pussle though
wtf is up with me today
yezz, a kewt pustle
my typing must be contagious
[18:31:57] <Lerneaen_Hydra> http://deadc0de.istheshit.net/
[18:34:00] <Lerneaen_Hydra> http://macgyver.istheshit.net/
[18:36:06] <Lerneaen_Hydra> http://squarepoodle.istheshit.net/
that's the best poodle I've ever seen :)
[18:36:52] <Lerneaen_Hydra> http://other_means_of_payment.istheshit.net/
that's just wrong
[18:37:11] <SWPadnos> http://amazon.com.istheshit.net/
[18:38:13] <Lerneaen_Hydra> http://sega.istheshit.net/
ok. that's enough of that shit
[18:40:49] <Lerneaen_Hydra> http://perspective.istheshit.net/
(not the same type)
[18:48:58] <Lerneaen_Hydra> http://no_brain.istheshit.net/
<-- I should get a sticker like that and apply it to various objects and people^W^W
I like that warning
mdynac: how goes the edm?
well i kinda got snowed out today....
oh - you where part of the blizzard
yep, about 10" or so, but the sun is out now
piles of white stuff everywhere....
we had just a little dusting this morning. gone now
well i'm about 50 miles west of Chicago
we got nailed
I am near lacrosse WI
west edge of WI
ah yes cheeseland, i have property 50 miles northwest of green bay....
Nice - big hunter or snowmobiler?
niether, big sailor....
Just this once .. here's the log: http://www.linuxcnc.org/irc/irc.freenode.net:6667/emc/2006-12-01.txt
Guest649 is now known as skunkworks_
skunkworks_ is now known as skunkworks
dastumster is now known as Stumpy
[22:45:53] <alex_joni> http://www.bumotec.ch/videos/des192FT.php
SWPadnos_ is now known as SWPadnos