introductory robotics course videos (stanford univ). each lecture includes an interesting robot demo. http://academicearth.org/courses/introduction-to-robotics
tomp is now known as tomp3
what does it mean when I turn on my computer, with my parallel port connected to my stepper drivers and the drivers are "holding" the motors iow both coils are powered on
it probably means that you shouldn't power your steppers until your computer is on and emc can control them
holding doesn't mean that both coils are powered on
archivist: any tutorials for heekscad?
didn't he say he was leaving?
dunno just got here
hmmm well my driver has LEDs for each coil and both are lit...
even after EMC starts with test config I made with the wizard the drivers don't change
are you sure it's connected?
to the parallel port?
yeah, but I'm not sure it is connected right...
do you have a breakout board?
does your driver turn on a coil with a high or a low? (check with halscope and a meter.. halscope will tell you what emc is trying to do, meter will tell you what is happening )
ok ... whats halscope?
I'm pretty sure my drive turns on with HI I have controlled the steppers with step/dir coming from an arduino
so your drivers are step/dir?
step dir and the need an enable pin set low to enable
in the wizard I checked the invert box for the pins I set to enable was that right?
argh I have to do a lot more reading ...
thanks for the help
I've installed eric's smp packages on Pentium Dual Core E5300 and it hang up with "(initramfs)" prompt
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is there a linux scandisk?
BigJohnT: check photorec & testdisk
(photorec is not only for pictures - don't be fooled by the name)
tomp is now known as tomp3
I have one computer that will not boot up all the time and makes it to the ubuntu progress bar then stops
isn't there a 'nosplash' you could put in the boot line maybe to see where it hangs?
(I am not a linux person)
I don't know
BigJohnT: when grub is showing stage 1.5 then hit eascape
ok thanks micges
then hit e to edit boot params and then remove word SPLASH or simmilar
will be at second line with KERNEL word
if its running, then edit /boot/grub/menu.lst and do as micges suggests.
on mine the line is 'kernel blahblahblah splash', so make it kernel blahablahblah'
maybe remove 'quiet' also... that makes for a lot of info, everything that dmesg would have
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Cradek: is it possible to use the tool table to make a font like dejavu-sans look like straight stick by offsetting the dig motion to the edge of the bit?
I don't think that would be successful.
Or to use the g410.0625 to cancel most of a 5/64's drill bit being used to engrave this stuff?
That I can try with an already working code for a B :)
The tracing is following the outside of the character. I want the tracing to follow the inside edge of the character by offsetting the bit by its radii.
But I just found that G41 only accepts integer value for the tool carousel socket #
Do I have to edit the tool.tbl and then load a dummy tool position? Seems hard to do for one off stuffs.
My docs are old?
steves_logging is now known as steve_stallings
gene: my favorite doc is this one: http://www.linuxcnc.org/docs/html/gcode.html
each gcode is a link to more details about how to use it
and it just fussed about the dot. This is 2.2.8 from the repos.
I'm pretty sure 2.2.8 has g41.1
the docs say so, anyway
Looks like I was missing the D, I'll try that. Thanks
with 2.2's cutter compensation, it's virtually impossible to use it on a path that wasn't specifically written for compensation.
with 2.3 you may have better luck, but without writing entry/exit moves by hand, it probably still won't be quite what you want.
Now its bitching about a concave corner & gouging. Axis shows only a few moves before the error.
yep that's what I meant above
and continues to fuss even when the g41.1D0.0001 is set, talk about picky!
I bet D0.0 will work right, though
So I have to write an alphabet for ngc. Ugg.
yup 0.0 works.
did you try http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Simple_EMC_G-Code_Generators#Text_Engraving_Software
I think some of the qcad fonts ARE single line
No it doesn't, code loads, but won't run
But the last time I looked at qcad, it didn't output .ngc?
check out that link
and what converts?
it has nothing to do with qcad except it for how it uses qcad's fonts
and I don't have it installed here, be back eventually...
insstalling, but I had to stop & restart emc to get rid of the cutter raduis error even with that line replaced with a G40. Bug?
if you get an error in the middle of a program, you may end up with cutter compensation still on. A G40 or better, M2 in MDI mode will fix it.
I see. Ok, I just redid the B from dejavu-sans, and the motion is all climb cut.
I'm using a scale of 0.0013 for a char about .350 high, and the bit is actually drawing two groves, How can I offset that to put the bit in the middle of the char on both passes?
It is a 5/64's bit, seem like I could use a small offset since the cut it always climb, and get what I want..
updatedb is running, so I can find the qcad fonts.
Humm, those are all .cxf, can ttt use them?
Looking at them in qcad, those aren't very good fonts.
and ttt spits them out. line 225 unk font error
steve_stallings is now known as steves_logging
I am back. Lunch time.
I am getting confused with the SCALE for B and C axis
counts per unit, just like the other
only units are degrees of rotation
(unless you've gone and used radians or something)
what should be the unit? step/deb?
OK, so it is in deg.
B and C are, by definition, rotations
yep. I am using stepconf, and I got a bit confused because I am thinking about the gear reduction I have on the stepper.
the geared down stepper is 0.036deg/step. in fact, I can just use that number in stepconf
I'm nmot sure stepconf will do what you want for a machine with more than 4 axes, or for a machine that uses any axis (joint) named other than XYZA
I'm sure that's beyond the capabilities of stepconf
yeah, I've gone through the whole thing yesterday to get B and C configured. Thanks to a lot of help here. :)
I am trying to get the scale right
if your scale is actually .036deg/step, that's 27.7777778 (kind of odd)
It is a 30:1 down scale gear head, but the stepper is already giving me the scale down number.
that's why I was confused.
because it will translate to 10000 steps per revolution
but the leadscrew pitch is therefore 360 deg/rev.
which is just therefore 1 to 1.
I was getting confused why it was there.
I think it has to do if you don't have the number, 0.036deg/step
I also have another problem with the spindle... it will start turning when the program starts... and then stop
that shouldn't happen. I guess there was a 5VDC signal on the line during the initialization of the port.
cradek, how did you get 27.777778 for scale?
why don't I get the same number using stepconf...
the stepconf "A Axis Configuration" page's questions don't make a lot of sense
I just got an ERROR: Module probe partport is in use
may be I didn't exit stepconf correctly just now.
humm... how do I get out?
oh well, let me restart the computer... brb
actually I am going away for now...
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never mind. I'll be back later.
Guest204 is now known as andypugh
Does anyone know if the 2.3 upgrade (from a .deb file) overwrites the
running the (new) latency testing widget it seems I am getting the every-64-seconds SMI glitch.
I am currently trying to upgrade my Virtual machine to see what happens there.
andypugh: if you modified rtai.conf, then the upgrade process should prompt you to find out whether you want to keep your changes or install the package version.
I accidentally closed the window. Did I miss any replies?
you mean /etc/emc2/rtapi.conf, correct?
Indeed. I had added the rtai_smi.ko module to disable the SMI interrupt
you mentioned a virtual machine -- the timings you get when running latency test in a virtual machine don't mean anything.
I did get a prompt, but I think that was asking if I wanted to install a new RTAI module, not chnge the conf. I could be wrong, and the installer quit with a segmentation fault right after.
if you didn't destroy the error, you should show it to us
Oh, indeed, I am just re-running the updater on the virtual machine to see if the rtai.conf modification date changes.
Destroy the error?
yeah, close the window or whatever
I probably did, as the machine is shut down now.
i.e., what most users do as soon as they see an error :-/
Guilty, I am afraid. I simple-mindedly restarted and tried again.
I was installing with dpkg using the .deb files. When dpkg stopped with a segmentation fault I just guessed I had installed in the wrong sequence, and that it needed a restart to sort out the dependencies
Has anyone ever come across a NTSC to ATSC converter? This is the opposite of every box you would see in the stores today.
As in TV signal converter?
[22:13:06] <andypugh> http://www.converters.tv/news/hdmi_to_video_cv_sv_downscaler_now_available_71.html
Or do you want an upscaler?
OK, time I did other stuff