EMC: 03chris * rb7bc9daddccc 10/cia: testing cia from git
EMC: 03chris * r7f456be3b9a6 10/cia: delete test file
EMC: 03chris * rba7ffd4b93a0 10/cia: remove test file again
EMC: 03chris * r7a2c71e40739 10/VERSION: mark version specially
is it really true that you can't find a certain commit by id in gitweb?
cradek: I think you can form the URL but I don't think there's a way to create the link using the gitweb search functionality
[01:52:27] <jepler> http://emc2.timeguy.com/gitweb?p=emc2-experimental.git;a=commit;hb=b7bc9daddccc
"testing cia from git"
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[15:02:50] <skunkworks_> http://www.machsupport.com/forum/index.php/topic,11267.0.html
[15:34:51] <jepler> http://www.machsupport.com/MachCustomizeWiki/index.php?title=Rs274ngc.h
#define ISNT !=
#define SET_TO =
I love it
* cradek waves at his old friend, the emc1 code
it was so otherworldly
I thought this was interesting http://www.cnczone.com/forums/showthread.php?t=69469&page=2
no floating point math - if jon is right
come a long way - huh :)
I am still tempted to buy some of those servos.
well I have played with git merges and rebases, and I think I'm getting comfortable with it
still trying to fight my way through jeff's three documentation URLs
I assume he means those itty bitty servos I got
yeah, those are neat
with any luck, Chris is just about done designing me motor mount variations
I'll get the encoder cables wednesday, then I can make up a connector for the mesa servo boards
haha, I've only drawn about 5 variants so far, I'm just starting
jepler: if we end up with a version that takes a 1/4 ID bearing, I've got a ton of them
jepler: the big expense will be the flex couplers at $20+ each
those are the size of the bearings that the far-end of the screws sit in, too
I wish I had a feel for how it would work without them.
I still haven't measured the ODs of those
whatever mine are might be different anyway.
Is there a common OD for each ID?
I don't know
I assume a typical OD is way under 1"
1/2 or 5/8 maybe?
the ones I have may be 1" OD
that is too big, the hole circle for the motors is 1"
your thinking belt reduction?
hey the clamp-on couplings would work well on dowel pins
skunkworks_: hoping for direct drive.
oh - cool
but we don't have a good feel for whether it would work ok.
skunkworks_: if you press on the end of the shaft, there's a fair bit of motion. chris wants to fix that by having a thrust bearing
neat. usually they have a spring behind the bearing race to take up slack (flat spring) I would think your steppers where the same way
there's some feeling of spring, but not much at all
jepler: how many inch-pounds are the motors?
cradek: approximately zero
I'm looking at the flexible shaft couplings. they give a "peak torque" which I bet means "they will bust if you go over this"
4 lb-in stall, .625 lb-in continuous
I was wondering how stout these would have to be to "probably" not break no matter what you do
ok, so the ones rated 12-16-28-42-67-84, which are the choices with 1/4 on one end, would be ok.
I know that the first 3 numbers are chest, waist, hips. what are the others?
(I like big couplings and I cannot lie)
there are six couplers with 1/4" on one end; those are the inch-lb ratings for all six models.
what's the motor shaft diameter again?
I think we decided this datasheet says they are within the range .1561 - .1564
.1565 = 5/32
incidentally, enco has 3/8, 1/2, 5/8, 3/4 OD for 1/4 ID ball bearings
[16:17:04] <cradek> http://www.mcmaster.com/#6208k131/=288r8u
hm, 1" length 1" OD
1" OD is a problem with the 1" bolt circle too
next one down is 3/4 OD
or else we're gonna end up with two plates or something
the threaded holes are #6. What OD spacers do you end up with #6 screws? Does that leave enough room with a 3/4 OD coupling?
mcmaster has 1/4" OD
so you need a coupling less than 3/4 for them to not touch
there's a 5/8, 6208K3
12 oz-in "peak" is getting down into the worry category for me
(I've seen these things break a few times)
but 12 >> 4 I suppose
I'm thinking about the moving-full-speed-crash-into-something-hard case though
the stall current is 9A and the drivers will be operating with a 3A current limit
so I don't think I can hit 4 lb-in anyway
yeah but you've got something with at least a little mass spinning pretty fast
I see what you mean
if we start with a cheap rigid coupler instead of a flex coupler, what's the downside? have I damaged the motor in the meantime, before I decide it's a bad idea?
some people have had motor shafts actually break if the alignment isn't perfect.
yeah in this case, I bet the weakest part by far will be the motor shaft, and it might flex.
Have you measure the shaft? the ad says 3.5mm-7/64
heh that comes out to 2 different sizes .137 and .109
maybe it's 3.5mm minus 7/64 = 0.028 :)
pretty sure I mic'd it and it came out 5/32
of course, I can barely read micrometers and calipers
skunkworks_: huh, their stock is up to 53
I saw that ;)
"If you get the bellows type, I would suggest the stainless version over the aluminum type, which are really only suited for encoder loads."
mcmaster's "high precision bellows shaft couplings" have peak torques as low as 0.7 lb-in .. they also cost a bundle
this is the coupling I used on the plasma cutter from the nema 23 stepper to the Z axis shaft 6208K168
busted any of them yet?
kinda pricey but works well
I used them to connect both sides of the Y gantry too
peak torque of 156 in lbs
nema 23 double stack motors
lbs? or ozs?
the coupling torque that is
you can see one in this picture http://s47.photobucket.com/albums/f163/johnplctech/Plasma%20Cutter/?action=view¤t=Plasma012.jpg
these did not work http://s47.photobucket.com/albums/f163/johnplctech/Plasma%20Cutter/?action=view¤t=Plasma004.jpg
I don't understand why those are so popular (love joy style)
they work great for coupling pumps and such - but servo/steppers
skunkworks_: we have such on the smaller servos on the bots
they work without issues
thanks for noticing
like in BJT's picture
we have both this kind: http://www.supermechengineer.net/encoder.jpg
and this: http://www.tantexcorp.com/products_limg/20090225203629.gif
this is the style that cradek is suggesting to me : http://www.mcmaster.com/catalog/115/gfx/large/6208kp1l.gif
jepler: neat - should work great.
are you going to have to bore them out to fit - or do they have the sizes you need?
jepler: how much was shipping on the servos you got?
skunkworks_: let me check
skunkworks_: looks like $10 on 4 motors
wow - very nice.
cradek: hm, mcmaster has no pulleys with 5/32 bore size that I can find
do they have any with 1/8 holes?
you're thinking to bore it out? yeah, they do
chris has the technology ;)
I'm not at all sure I have the technology to bore a deep 5/32 hole
more skill than technology
wait - I thought you fixed clocks and such ;)
[19:08:53] <skunkworks_> http://www.use-enco.com/CGI/INSRIT?PMAKA=317-5616&PMPXNO=19499014&PARTPG=INLMK32
I am sure there are less expensive ones.
skunkworks_: no holes on a watch are 1/2" deep...
after seeing you guys bore out a holder on your little lathe at the last cncfest - I don't think you would have a problem.
or make one out of drill rod
the whole pulley? I think I want a timing belt type, that's hard to make on a lathe
I ment the boring tool.
Notes:  Peak values are theoretical and supplied for reference only
how is your servo drive coming? your are sam from the fest right?
cradek: I see that I was wrong about there being a separate manpage about things to configure with 'git config'
mozmck: yes :) are you the texan?
I have not touched the servo drive since I got back. (busy building a garage atm)
I almost started working on the kerney and trecker but got side tracked putting a air compressor togather. (it was in the way_
I see. I need to fix up a good compressor too. I have an old 2 stage that I think will work if I work on it a little.
[19:29:18] <skunkworks_> http://www.electronicsam.com/images/KandT/DSCCurrent.JPG
it is actually in this picture also
Are you going to run the k&t with your servo drive?
that should be interesting.
cradek: did you get a chance to look at my second Makefile patch?
cradek: git config --global allg "log --stat"
git config --global alias.lg "log --stat"
then you can 'git lg' and get --stat specified by default
I guess they don't want the equivalent of .cvsrc because it might break scripts that use these commands.
it looks like you can't automatically add flags to a builtin command, you have to choose and remember to use a different command name
skunkworks_: that tool is good for a $20 "snap" noise
Heh - only if your not careful. ;)
monday must be mach monday for me. http://www.cnczone.com/forums/showthread.php?t=82753
I like the last post.
mozmck: I see it on the list now. It definitely looks right to me...
ok. I spent another 15 minutes sat night and figured that out.
you stayed awake later than me then...
not much. looks like everything else runs fine here.
ok I will get it committed for you, and thanks again
[19:47:10] <micges> http://imagebin.ca/view/mW9Z7mh.html
how can it be?
is it homed?
micges: I assume you want to show that you jogged outside the machine limits
[19:49:44] <micges> http://imagebin.ca/view/SesmPKk7.html
I bet that isn't allowed
it shows message that limit are exceeded but allow jog further
micges: can you say how to reproduce this problem?
run trunk sim_mm
ang jog in -x direction
happens in configs/sim?
interesting. I can jog to -254.00 mm
it stops at -40 inches for me
that looks like it lines up with the working volume
MIN_LIMIT = -254
Y stops at -254.00 as well, which is within the volume
X & Y are -254 .. 254 mm
-40 is my inifile minimum
Z is -50.8 .. 101.6
ok letme rip again
F1 F2 ctrl-home hold left arrow
jepler: he said axis_mm.ini
it looks wrong in the perspective view, but it's correct if I look at a Z plane view
oh, I missed "mm"
ah, and that's because Z is not at the bottom of the work volume
yes, sim/axis_mm.ini also works just fine. same keystrokes
yep. it's working as expected here
maybe bugs shows only on dapper ? ;)
I was testing on Jaunty, so could be :)
now, I haven't updated recently..
I have - in the last couple of days
I was messing with Exceed soft limit messages, ant on all my rips I suddenly can jog past soft limits
though the version I'm testing with is 2.3.0_~beta1
that's a silly version to test
oh, so you broke it :-)
but I have 2 clean installs to test
I'm with cradek on this one :)
and screens are from there
* alex_joni fires up a fresh dapper
I did cvs up, make, and run; it's still OK here
I'm gonna trace it
micges: about your comment on the helix_length code: that code you copied is right, the theta is wrong
the problem is earlier
cradek: let me look
it decides to do the full circle instead of the small arc
I saw that angle is sometimes different
it is 6
notice the DTG is 2 * pi * I word
to all: jogging works correnct in 2.2.9
I expect that it's 2pi + a little
7 or 15 would surprise me
maybe all params are connected somehow so then strange numbers
cradek: so the problem is in pmCircleInit() ?
maybe some overflow with 10^10 numbers ?
micges: jogging works fine here
dapper, with just updated 2.4.0~pre
ok I found it
Issuing EMC_TRAJ_SET_TELEOP_VECTOR -- (+231,+84, +25,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,)
Issuing EMC_TRAJ_SET_TELEOP_VECTOR -- (+231,+84, +26,0.000000,30.383333,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,)
those messages I get while jogging
with sim_mm ?
those I get on 2.2 and they are correct: Issuing EMC_AXIS_JOG -- (+124,+24, +13, +1,30.383333,)
I only get jog/abort
are you sure you're not running some other kins maybe?
ok found it, hidden file .axisrc was accidently copied and executed on axis run :|
good night all
good night all
I wonder what you can write in axisrc to evade soft limits
soft limits are supposed to be enforced in task
jepler: right, but if it manages to send TELEOP jog messages, then task will probably do the wrong thing
teleop messages aren't checked against axis limits iirc
they should be checked against joint limits
see you alex_joni
EMC: 03cradek 07TRUNK * 10emc2/src/Makefile: two more fixes for "make install", thanks Moses McKnight