dangit .. looks like bdi2 doesn't have readlink(1)
what's that used for?
alex_joni: nothing .. yet
err.. I meant what do you want to do with it?
replace some silly business in scripts/realtime with 'readlink -f'
the part beginning # it exists, is it a symlink?
I'm still trying to speed up startup & shutdown of emc2
I have it under 2 seconds to start, display axis, and stop (hot disk cacke)
but part of that is simplifications of the realtime script that won't work on older systems
oops, time to go to work
ok, talk to you later ;)
yay alex sent a dapper announcement
really no need to wait forever
if I use a new machine for my lathe (not sure if I will yet) I'll try dapper
did you make a new install script and put it on linuxcnc.org?
that's OK, now that we support dapper we'll have to tell the people who want 64 bits that they need to wait
there's always something
used that so the name stays the same (and the instructions to install are still relevant ;)
I would rather have rtai-isolcpus + smp than 64 bit
this bit on the wiki front page should probably be updated:
" An entire special distribution of Linux is no longer needed to easily install and run EMC2; see the instructions for installing the EMC2 packages for Ubuntu 5.10 at http://timeguy.com/cradek/emc/ubuntu
These packages are maintained by a member of the EMC board of directors and are kept up-to-date (and provide a very easy upgrade capability) as new Testing snapshots are made."
maybe we should decide whether to mention emc1 at all on the front pag
jepler: will you change it?
jepler: not sure :) .. there was a bugreport on emc1 recently though
but that was between the very few things I heard about emc1 in the last year or so
I don't see any reason to use emc1 anymore, except maybe on VERY old hardware
yeah, but emc2 runs on bdi2.x too
so that's up for debate
however I can imagine lots of ways to use parts of it (because of the PD license)
" An entire special distribution of Linux is no longer needed to easily install and run EMC2; see [the instructions for installing the EMC2 packages for Ubuntu] 5.10 and 6.06. These packages are maintained by a member of the EMC board of directors and are kept up-to-date (and provide a very easy upgrade capability) as new releases are made."
'm not saying we should expunge all mention of emc1
s/a member of//
since these responsibilities are now shared among the board
but it's now irrelevant for most users, and I want to help avoid the user asking "but which version do I need?"
I don't think I've heard that happening
maybe it's not asked aloud I guess
lol.. did you see this? http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl/emcinfo.pl?Suppliers
yay for wikis
yay for chips
I like the chips thumb up/down
do penguins have thumbs?
[13:58:27] <alex_joni> http://becausewehavethumbs.blogspot.com/
main poster is "Sarah the penguin"
so I guess that proves it :D
jepler: ever thought about getting one like this: http://www.bhphotovideo.com/bnh/controller/home?O=productlist&A=details&Q=&sku=389038&is=REG&addedTroughType=categoryNavigation
I bought a 2x TC off ebay. with it and my 75-300mm at 300mm, AF is unreliable, and the images are not terribly sharp (possibly related to bad manual focusing). shutter times are long because the effective minimum aperture is F/11 or something
right.. they do say that you need a 2.8 lens or better for AF to work reliable
mine is 4-5.6 :(
the 75-300 I mean
yeah .. mine's similar
this would be a good lens: http://www.dpreview.com/news/0602/06022112canonef85f12l.asp
85mm isn't any good for portraits on an EF-S camera
I use about 200 for portraits
but I need lots of light
hmm.. did you know there is a 50mm 1:1.0 one?
[14:47:30] <alex_joni> http://photo.net/photo/canon/canon-50-1.0.html
eek, and the price! ¤2,049
[14:49:49] <alex_joni> http://www.geocities.com/Yosemite/8917/ef50back.jpg
that looks crazy
cradek: did you take any screen shots of halscope while tuning your PIDs?
I like screenshots
the pid output varies a surprising amount to give good results
at first I was going for "smooth" pid output, which gave bad FE
later I got smart and worked on smooth FE, not worrying about what the pid output looked like
now do a "rapid" and stay within ~ .004 mm
now IT CAN
it seems surprising that the PID output would not be smooth, since everything I've read assumes the relationship between PID output and velocity is pretty constant
(this whole business in setting the PID's output range so the output is in "units per second"
well, my setup sucks
maybe on X (which doesn't suck) it'll look better
did you use the new pwmgen component?
if I reduce D the pid output looks much smoother, but the FE oscillates
it could be that I still don't know what I'm doing, of course
it's still set up for freqgen (I did this config before pwm), but I will switch it to pwm
what's the oscillation like? seems like if it's at 1 per motor or leadscrew rev it might be about a physical problem .. and if it's at 60Hz or 120Hz it could be power supply ripple.
I'm 90% sure it's per motor rev
it would be interesting to command a duty cycle (no pid) and see how the derivative of the feedback position looks, too
I think the pulley on the motor is drilled off center a bit
I'll either plug it or get a new one
I thought I could get away with drilling it, but it really needs to be bored
(but boring a 4mm hole is going to be a pain in the neck)
cradek: it'll work ;)
real newbies today on the list
yes, thanks for answering them all
cradek: no reason to thank me ..
sure there is, it means I don't have to
yeah, but next time I bet you'll do it, so I won't have to ;)
maybe, but don't bet too much!
next time = 2.5 weeks :D
anyways.. heading to bed now :) night all