cradek: With your interest in clocks, and programming, and, well, cool stuff, I wonder if you have seen this: http://gizmodo.com/5223606/jaquet-droz-time+writing-machine-elegant-in-still-life-clumsy-on-video
Apparently all mechanical, very impressive!
A person would probably go through a lot of Post-It notes though, showing the time to their friends.
I hope there's a heavy spring to power the "plotter" and a light spring to power the "watch".
morfic: ^ later
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wow, fabulosity (Re: Time writer)
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hmm.. someone scared jepler away
it's the weekend..
* alex_joni is running home ;)
whee 3 day weekend soon
are you doing anything fun?
I'm staying home and doing whatever I feel like!
that sounds fun! :-)
i'm stacking a cord of firewood, hopefully finishing the kids' bunk bed, and maybe painting some new drywall in the living room, and *maybe* if there's time going on an overnight bike camping trip with kerry
do you guys heat with wood? I don't think I even remember a fireplace
we had a really cheesy open fireplace when you were here, but this summer we bought a new one that will be an effective heater
I have some programming to do, and I also might try (again) to build heekscnc
what kind of programming are you thinking about?
a little paying gig, nothing big/fun/interesting
I just have to find a block of time to do it
paying gigs ftw
yeah, never hurts
I think I have a good 1.5 days to work on the K&T. Hope to get x and z homing
skunkworks: that would be very cool
if the line drivers work - to an index :)
I need to look up your fix for the homing thump
when I get that far.
should be fun to see how z sounds. it always had a shutter to it. most likely because of the backlash in the gears (which should be fixed now)
woooOOOOOOOOOOOooo woOOOo wooo BANG! wooo.
^ jr homing before that change
I hope they're all as tight as X - that's sure great
then you had to use a crow bar to move jr back into position? ;)
nope, it still homed fine, but it was cringe-inducing
sometimes it ferrored the first time, and the second time would work
cradek: yes - should be neat. Z has the most geartrain. Y only has 1 right angle zero backlash gear setup.
i crashed my z axis the other night
ouch, did you hurt anything?
retracted at full speed into the positive (up) hard stop
it seems fine
didn't stop in time when it hit the switch?
i was messing with my new control panel, testing the continuous jog setup
those are hardwired as estop, right?
yes the machine e-stopped
that machine disconnects the servos and shorts them out on estop - I'm surprised it didn't stop in time
i had restarted emc2 and forgotten to home the machine before testing the jogging... :-(
heh I bet everyone has done that
it's tempting to severly limit jog speed when the machine is not yet homed - I bet that would save a lot of mistakes
the axis was jammed pretty good against the stop, i couldnt budge it by jogging it off (instant ferror) or by tugging on the servo belt by hand
i ended up taking the belt off and whacking on the timing pulley of the axis
i used a block of aluminum and a regular steel hammer
does it hit something flat, or do the balls run out of track?
it took a couple good whacks to get it free
i think it hits something flat
the axis moved fine under servo power once i freed it
good - at least the pressure is on all the balls then
i should pop the cover off the z axis and look for loose balls maybe...
wonder if you could move the switch down any
i like the idea of limiting jog speed when unhomed
I've made the same mistake, but jr must have more overtravel
I did it going up on Z also
the limit switch is moved pretty far down already, the plunger has moved a bit once the home switch trips
i'll see if i can make it any tighter
+Z seems like a popular jog to do quickly
the boss8 would only let you do a very very slow creep before it was homed
"annoy the user until he makes the machine safe to operate" sounds like a good thing
people sure whine whenever we make that kind of change though
I still haven't heard the end of requiring homing before mdi or running a program
if there was an UNHOMED_JOG_SPEED parameter they could set it however they want
not everyone has big/fast/dangerous machines
I crashed jr for the first time the other day! it was pretty spectacular.
was that the jog +z thing you mentioned?
WOOOOOOO BANG!!! ooo
nope, that wasn't a crash, it just hit the limit and stopped
did it crack your cement floor this time? ;-)
that's not spectacular
recently I did a g83 in mdi with Z=0 set about four inches below where it should have been
so it rapided downward into the work
what size drill bit?
it drilled for a little bit, I'm sure, and then the drill bit disappeared, then the drill chuck jaws drilled for a little bit (quarter turn), then it ferrored
I think it was #7
except for destroying the work and the drill, everything was fine
yay, just the right parts failed!
did you check runout on the drill chuck afterwards?
the chuck seems ok still - it doesn't turn quite as free, but it works
only by eyeball :-)
straight down is probably the best kind of crash - unlikely to hurt the spindle
I've done that same thing twice (mdi a drill cycle assuming Z=0 is the workpiece when it's not) - the other time was on the lathe
it reamed a thru-hole very very fast - surprisingly the hole turned out ok
I need to be more careful in mdi.
make ctrl-enter do a preview of the MDI move (if only you could see it)
yeah it would sure be neat if AXIS could show you a preview of the mdi move ... somehow
i'm looking at the EMC2 G Code Language document, and i'm confused
[18:18:42] <seb_kuzminsky> http://linuxcnc.org/docs/devel/html/gcode_main.html#sec:G80:-Cancel-Modal
what does "modal group 0" mean?
group 0 is the motion group containing approximately g0, g1, g2, g3, all the canned cycles
g80 is the member of that set that prohibits motion?
going to be wierd not having to manually program pecking cycles....
yes, it's the motion gcode that makes no motion
hm, the rs274ngc3 doc says the motion group is called group 1
(gwbasic sure came in handy)
i see in axis' mdi's "Active G-Codes" display that exactly one of g0-g3, g73, g80, g83, and maybe others is shown at all times
Fanuc 21 puts g0-g3 in group 1 and g80-g89 in group 9
i dont have access to a fanuc controller, but i have a fanuc gcode program that programs "g80 z.6" and I *think* it expects g0 motion to z.6
so in fanuc maybe the sequence g2 xyij, g81 z..., g80, ij would be valid
i wonder if there's a fanuc anywhere to poke at
I think the g80 would cancel the cycles and revert to the previous type of motion whether it's g0/1/2/3
I have a fanuc book, but not a control to poke
i think so too
in emc I think g3..., g80, ij is an error
(I struggle to see any use for g80)
I guess it can be used to cause the "intial level" to be reset in canned cycles
isn't that used to cancel modal motion?
so you have to specify G0..G3 (or something else) before any more motion can occur
yes I think that's the idea
of course I have no idea why you'd do that
to make sure that a subroutine can't result in an unexpected motion type
like a peck cycle - some random axis word after that would result in another peck cycle if a G word isn't specified
some mfctrs used G80 to end a 'list' , some canned cycles used a list. like 'begin drillahole xy xy xy xy end of list', g80 was endoflist
g80 ended the modal canned cycle
* jepler notices there are about 60 commits since v2.4.3!
it makes me think maybe I should get another version out soon
wonder if there was anything I intended to fix...