Mark Wendt (Contractor) wrote:
http://www.seeedstudio.com/depot/dso-quad-4-channel-digital-storage-oscilloscope-p-736.html?cPath=174
Hmmm, nowhere do they state the bandwidth! They do indicate sampling rate
up to 72 Msamples/sec. So, one can infer the bandwidth has to be less than
36 MHz,
Bruce Klawiter wrote:
See images 1 and 2 of the encoder here:
https://sites.google.com/site/bmklawt/home/robot/robot-picture
Hmm, looks like a magnetic encoder. I worked on some Yaskawa encoders
a while back. That black drum has a pattern of magnetic info written
on it, and
even touching the
Cathrine Hribar wrote:
Hi Andy:
do u know of any software that can be used on our machines that will make
and
save PDF files like Adobe Acrobat?
I use ps2pdf all the time, likely it is already installed there. It can
convert any properly constructed
PostScript file to pdf, generally
gene heskett wrote:
That has been done long ago Mark. The problem is that on pclos (this box)
gene is the first user, with a userid of 500. On ubuntu, gene is also the
first user 1000, so when user 500 tries to copy a file to /home/user=1000
on ubuntu, its 100% no permissions.
Now if
gene heskett wrote:
And sudo quits working, so you can't fix anything else.
You actually can, but you have to get down to hacker level. You can get
into
grub, show the default boot command, and add the option to go to single-user
boot mode. When Linux comes up, you are the super-user,
Luis Antonio de Andrade wrote:
I would like to wish everyone a Merry Christmas and a prosperous new year.
Yes, especially to all the tireless developers who work many unpaid hours
behind the scene to continue improving EMC2,
Merry Christmas and Happy New Year!
Jon
Mark Wendt (Contractor) wrote:
Anybody remember the Alt-somethingorother key combo to bring up the
running of the startup scripts rather than the Ubuntu splash screen
during boot? I thought I had it saved away somewhere but I'll be durned
if I can find it. That's helpful if you
gene heskett wrote:
That is assuming that netmos 9815 card is usable, I _think_ that one is one
we agreed to blacklist in our discussions here, about 2 years ago. It
doesn't do the EPP mode correctly or some such. I have one, made by
Rosewill, and I took it back out and am now using a
Kirk Wallace wrote:
On Sun, 2011-12-25 at 16:37 -0600, Jon Elson wrote:
... snip
I have seen several messages by people in the
last year or so that couldn't
get them to work. I don't know if those were defective boards, some
kind of PnP enumeration
problem or something else.
Jon
dave wrote:
The fancy encoder on some Fanuc motors comes to mind. I think Jon Elson
doped out how to read one of them.
Yup, Fanuc serial pulse coders come in 64K, 128K and 1 million count
versions.
The 64K don't dither at all, too. These have A860-xxx part numbers, and are
called
kqt4a...@gmail.com wrote:
Just in case y'all run out of something to ponder
I do not have one of those fancy meters Gene mentioned but I do have a
Kill-A-Watt
118.7 volts ac
3 motors at rest - 1.15 amps
3 motors running - 1.6 amps
4 motors at rest - 1.43 amps
4 motors running - 1.85 amps
Really? 100V?
Sure, 50Hz is found all over the place - but usually at 230V.
Japan is a WEIRD place, for historical reasons. Half the island is 60
Hz the other half
is 50 Hz. So, they have two totally separate electrical grids! This
led to some of the
crazy problems at the Fukushima
Kirk,
Hey, happy new year!
I have a customer who has converted a Hardinge HNC adapting most of your
configuration, especially the turret. He just upgraded to EMC2.4.7 and
I helped him through
the various problems he ran into. He now even has CSS working.
He is having some problems where the
andy pugh wrote:
I have some surface-mount opto-sensors which have pads on the
underside, but no pins as such.
Can anyone suggest how to solder them to PCB pads? I currently have a
soldering iron, blowtorch, gas cooker and a hairdryer, though I am not
averse to buying other tools.
Hmmm,
gene heskett wrote:
Ed Nisely had
an article in CC some time back where he used a toaster oven for that,
IIRC.
I also do production work with a toaster oven! I have a ramp and soak
temperature
controller from Omega, and found the best control was to poke the
thermocouple
into a plated
gene heskett wrote:
Maybe I'll even buy a whole new box. If I could find one of those compact
models with a usable parport no built in video.
Is anyone actually selling that intel board that has been discussed here in
a ready to go package? I'd drop the card for one of those in a
gene heskett wrote:
Is anyone running emc on this? How is the latency?
I've tested the Intel D525MW motherboard, and put it in the database.
The servo thread jitter was 15595, the base thread was 11921.
That is fine for any system with a hardware interface (servo or
stepper) but may be a
gene heskett wrote:
On Monday, January 02, 2012 02:31:38 PM andy pugh did opine:
On 2 January 2012 18:46, Kenneth Lerman kenneth.ler...@se-ltd.com
wrote:
That will be the third such machine I have. It does have built-in
video, but you don't have to use it.
However,
andy pugh wrote:
No, this is the Intel BOXD525MW (but I think that BOX might just
mean it is in a box)
Yes, it means there is an individual cardboard box with holographic
anti-counterfeit
label, meant for sale to the end-user, instead of packed in cases of a
dozen or so.
Jon
andy pugh wrote:
On 2 January 2012 19:59, Mike Payson m...@dawgdayz.com wrote:
Skillet/hotplate soldering works great for those situations:
http://www.youtube.com/watch?v=Uov0SPHKcnk
How do you spell Solder in the US? All the videos seem to pronounce
it sodder whereas I have only
gene heskett wrote:
How about this one? $219
http://www.directron.com/extremevalue.html
only needs an optical drive for installs.
I am tempted to get 2, one for the lathe.
Yup, looks mostly OK to me. It has a plastic window on the side, and a fan.
You may need the fan with the magnetic
Kent A. Reed wrote:
On 1/2/2012 10:35 PM, Jon Elson wrote:
gene heskett wrote:
Is anyone running emc on this? How is the latency?
I've tested the Intel D525MW motherboard, and put it in the database.
The servo thread jitter was 15595, the base thread was 11921
Peter Blodow wrote:
Hello gentlemen,
the point is that the long o in solder is pronounced in US english
like aw in a common process known as delabilisation or unrounding.
It is extremely rare to hear it pronounced sawder in the US, although
I have heard that
pronunciation once or twice.
Steve Blackmore wrote:
On Tue, 03 Jan 2012 05:38:45 -0500, you wrote:
On 01/02/2012 03:15 PM, andy pugh wrote:
On 2 January 2012 19:59, Mike Paysonm...@dawgdayz.com wrote:
Skillet/hotplate soldering works great for those situations:
gene heskett wrote:
I put the better PSU in, but had problems getting a clean boot, and once I
did get one, uptime was in minutes, 2 more times. Going to my IR
thermometer because gkrellm said the hard drive was pretty warm, I noted
that all the caps in the cpu supply on the mobo had tops
Kirk Wallace wrote:
On Tue, 2012-01-03 at 19:26 -0500, Kent A. Reed wrote:
... snip
The jury still seems to be out on the question of SSD reliability,
partly because there are so few data points compared to rotating disks.
... snip
I just replaced a friend's Samsung 60GB SSD. It
gene heskett wrote:
Can some of that perceived resistance be credited to us linux folks
generally being more likely to have a decent UPS that shields our boxes
from a lot of that stuff?
Nope, no UPSs here or at work. our network switches at work are on
UPSs, and maybe
the departmental
Mark Wendt wrote:
Jon,
Linux/Unix used to have the same problems. Until they invented
journaling. That, in my book, has save a ton of disks for me here at
work with cleaning folks accidentally pulling power cords, unexpected
power outages over the weekend that fully drain the UPS's,
gene heskett wrote:
This house, with a full basement, has I believe shifted upwards, floating
if you will, at least 2 in the 22 years I've been here.
Well, I guess we have been real lucky here. The shop is in my basement,
totally uninsulated
except by earth berm. I put exterior foam with
Kent A. Reed wrote:
Apart from our natural conservatism, is there any reason y'all with big
systems aren't watercooling within a sealed box, piping the heat to an
external radiator?
Well, it is expensive, and for most systems it is now somewhat
old-school and unnecessary!
The Atom
Farzin Kamangar wrote:
Dear EMC users,
I was wondering how I could get the commanded positions, meaning the
commanded positions from Gcode, and show them on the GUI.
The @ key toggles between commanded and actual position display on the
3D window's
DRO values. The # key toggles between
Kirk Wallace wrote:
It seems to me, a custom method of burning a CD might work. I would
think very fine lines could be made. Another idea might be to have glass
disks aluminum coated as is done for telescope mirrors and either etch
or burn lines in that. I Could use 3 diameter encoder wheels,
Kent A. Reed wrote:
possible even install RTAI and EMC2 over a Ubuntu server distribution to
avoid the Gnome/X-server stuff altogether, since there's the usual niff-naff
about booting Ubuntu desktop edition without a monitor attached, etc.
I have a non-EMC project where I run an EMC-Live
Kent A. Reed wrote:
Interesting, Jon. I've been told that Ubuntu desktop edition stalls
during boot if it doesn't detect a monitor. There's a lot of blog
entries out there devoted to how to make a VGA plug to fool your system
into thinking a monitor is present.
Well, easy enough to test
Mark Wendt wrote:
On 01/09/2012 10:52 AM, Kent A. Reed wrote:
On 1/9/2012 9:57 AM, Les Newell wrote:
Some kernel mode display drivers can make X fail to start if they don't
find a monitor. See this page
https://wiki.ubuntu.com/X/KernelModeSetting so see how to turn off KMS
Kirk Wallace wrote:
The recent talk about headless emc2 got my to look into running emc2 on
a remote PC with ssh. I looked at the wiki page
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Running_Multiple_User_Interfaces
and generic pages on X11 through ssh
Przemek Klosowski wrote:
Speaking of connectors, has anyone considered using RJ-45? it's a proven
locking connector that's cheap and rated for over 1A per pin, and the
cables are easy to custom-assemble. What's not to like, I'm asking in all
seriousness?
Well, these connectors are REALLY
Edward Bernard wrote:
Here you can read how Phil Moore of PMinMO.com takes care of the hold-down
problem:
http://millpcbs.com/index.php?option=com_contentview=articleid=17Itemid=46.
No need to make it more complicated than necessary.
I made a fixture plate with a 1 grid of threaded
a...@conceptmachinery.com wrote:
Hi
i there spindle motor and motor drive that can be better used for tapping?
Problem with use tap is that spindle motor can easy crash tap and after
that extra charge - + equipment - to remove broke tap from hole.
I have been using rigid tapping with EMC2
a...@conceptmachinery.com wrote:
Hi
Tapping cycle use very slow motion, why drive can not stop motion of spindle?
if max rpm for tapping around 100 rpm , can drive stop spindle ?
it is possible to program for 70% or torque that actually will crash tap,
to have some safety
Is 1200 RPM slow? I
Ed wrote:
If Fanuc, Siemens, Mazak, et al have not implemented torque limiting
for taps I would guess that it is much more difficult than it looks.
Yes, I would think that the spindle must come to a stop within 5 degrees
of rotation from
when the overload is detected. I think that
gene heskett wrote:
That was when I learned about EDM to remove the taps. :) Slow, but does
the job without hurting the hole. I have since built a better PSU for
that, works nicely but you can hear it running blocks away, very _VERY_
noisy, estimated 140db inside the teeny shop I have.
Chris Radek wrote:
In the spring of 2011, the LinuxCNC Board of Directors was contacted
by a law firm representing EMC Corporation (www.emc.com) about the use
of EMC and EMC2 to identify the software offered on linuxcnc.org.
EMC Corporation has registered various trademarks relating to EMC and
andy pugh wrote:
I have a D510 + PicoPSU system.
The PC shuts down as expected, but I would rather like it to power-off
the power supplies and monitor too.
Has anyone set up such a system?
I am thinking in terms of a relay controlled by the PicoPSU 5V or 12v
output to switch the 240Vac with
Matt Shaver wrote:
I just wanted to say that I agree with this decision! EMC was always
too short, and such a common letter combination to make an effective
search term on the internet.
Well, I don't fully agree, but ElectroMagnetic Compatibility is another
EMC that
causes confusion in the
Ed wrote:
Kent A. Reed wrote:
No telling who a Large Magellanic Cloud might sue :-)
Peter Wallace
With our luck they'll just build a hyperspatial express route through
our neighborhood, knowing that actions speak louder than words.
Nah, they'd just lob a supernova into
Scott Hasse wrote:
All-
I'm thinking about writing some gcode filters for EMC2 in python, and want
to make these as robust and flexible as possible. To that end, I'm
wondering if there is a typical approach to parsing and validating
arbitrary-format gcode into some sort of canonical form so
Ed Nisley wrote:
On Sat, 2012-01-21 at 12:44 -0600, Jon Elson wrote:
Every numeric value is preceded by a letter telling what it is.
Except in the wonderful world of RepRap, wherein they're now
(contemplating?) dual-extruder G-Code with multiple numeric values
after the E axis
Chris Radek wrote:
But for a modern gcode or for the linuxcnc gcode in particular, this
is not the slightest bit true, and it is a disservice for those in the
know to say it, since inexperienced people hearing it will try to
write regexp-based gcode parsers or other foolishness, and then will
John Stewart wrote:
Hi Andy;
Does it actually have a homing switch or not?
No, no homing switch.
I read somewhere that the HOME_SEQUENCE=-1 told LinuxCNC (smile) not to
home. Am I correct in that assumption? Or, is there commands in there that
say don't home but you should
Tom Easterday wrote:
We have been using the 2.5 branch and have made quite a few changes and have
things working nicely. We want to continue forward with 2.5 and abandon
2.4.X. Should I just leave things alone, leave it in run-in-place mode, or
should I rebuild it without that (or is
gene heskett wrote:
On Sunday, January 22, 2012 09:01:21 PM Jon Elson did opine:
I just tried these two additions to my .ini file, then restarted emc while
the machine was within about a thou of zero on all axises. But on the
restart, the home flag wasn't set where it was restarted
andy pugh wrote:
I have a friend involved in the Yocto embedded Linux project, he said
the following:
I'm afraid I don't know the status of rt-preempt on beagle. Its not
something that is on the official test matrix so it might work or it
might not :/. I did ask around but nobody is giving
Kirk Wallace wrote:
but I used the paradigm of a switch closure at the time I did the
installation, after giving it more thought and referring to:
http://pico-systems.com/images/univstep.png
it looks as if the inputs already go to an opto-isolator on the UPC
anyway. It may be that a
andy pugh wrote:
On 24 January 2012 13:47, Sven Wesley svenne.d...@gmail.com wrote:
3. There are too many info channels! Close down the forum on the LinuxCNC
website ASAP! It doesn't work, Google can't make correct forward links and
some browsers fail to show it. There is an active forum
John Thornton wrote:
Why on earth would you want to close down the LinuxCNC forum and shift
to a commercial laden for profit forum? There is nothing more annoying
that waiting for all the commercials to load and clutter up your screen
at the zone. Do you work for or derive profit the zone?
Kent A. Reed wrote:
At best I'm a dilettante with machine tools and certainly I'm no expert
with a lathe. That not withstanding, long, long ago, I was taught to cut
a tapered thread on a manual lathe by shifting the tailstock over. It
seems to me this would necessarily mean the thread pitch
Greg Bernard wrote:
Has anyone had experience with capacitive encoders? I found these while
browsing CNC4PC:
http://www.cnc4pc.com/Store/osc/product_info.php?cPath=64_78products_id=363
They seem to be very affordable.
Yes, they look real good until you put them in a servo loop. They
Viesturs Lācis wrote:
In my previous attempts I had:
DEADBAND = 0.0005
P = 90
I = 40
D = 1,65
FF0 = 0
FF1 = 1,5
FF2 = 0
BIAS = 0,0005
FF0 should always be zero on a motion axis. It creates an offset that
varies with position.
FF1 should always be much less than P. FF2
Peter C. Wallace wrote:
This is wrong, you add D to make it more stable not I
This thing about add I to increase stability is in several places in the
docs and Wiki,
and I was wondering about this. I agree with you that it is D that
increases stability
(up to a point). If this is truly
Kent A. Reed wrote:
I don't interpret this simple method to mean add I to increase
stability but perhaps that just shows I don't know PID theory and practice.
and I was wondering about this. I agree with you that it is D that
increases stability
(up to a point). If this is truly a
John Thornton wrote:
Jon,
What is FF0 used for if it should be set to 0 for a motion axis?
I used to think it was useless, but if you use the PID for a spindle
speed control,
for instance, then it is quite useful for a velocity servo. It serves
about the same
purpose as FF1 in a
Viesturs Lācis wrote:
2012. gada 28. janvāris 18:14 noel noel.ro...@comcast.net rakstīja:
All interested in Servo Tuning.
Have a look at:
http://support.motioneng.com/Downloads-Notes/Tuning/default.htm
In the link from Noel I find that all three (well, the last maybe not
that
John Thornton wrote:
So, looking at one of the links for servo tuning is our
FF0 = Velocity Feed Forward Gain.
FF1 = Position Feed Forward Gain.
You have these reversed.
Jon
--
Try before you buy = See our
gene heskett wrote:
On Sunday, January 29, 2012 12:00:01 PM andy pugh did opine:
On 29 January 2012 13:23, John Thornton bjt...@gmail.com wrote:
So, looking at one of the links for servo tuning is our
FF0 = Velocity Feed Forward Gain.
FF1 = Position Feed Forward Gain.
FF2 =
Viesturs Lācis wrote:
I would like to ask, if anyone could provide some recommendations for
US Digital encoders - I chose them, because they seem to be next in
the line in terms of affordability.
US Digital may not be the greatest. At least, at one time, you had to
add capacitors
to the
dave wrote:
On Sun, 20 Nov 2011 21:40:51 -0600
Jon Elson el...@pico-systems.com wrote:
Kirk Wallace wrote:
I seem to recall the ARM chips had a cache between the core and the
I/O buss.
I don't think it is a cache, exactly, but the I/O hardware is
multiplexed between the banks
gene heskett wrote:
This board claims excellent speed, as in 10ns propagation delays thru the
opto stuffs. That seems rather fast for opto's, and I haven't measured it
although I have the scope to do it with.
I don't believe it! If they are really opto-isolators and not some other
Erik Friesen wrote:
I have been looking pretty close at the pico systems board, however, as of
yet I am not clear how to integrate spindle amps monitoring with it. I
also want to monitor vaccum for a holddown system.
You just want an overcurrent limit, or you want an analog measurement
Erik Friesen wrote:
I don't care about an analog measurement, I want the system to pause or
park when amps are outside of a set range. How would you do the first
scenario?
Does your spindle drive provide an overcurrent signal? If it is a
contact that opens on
fault, you can just wire it
Erik Friesen wrote:
I am not so sure about the parallel port and encoder idea though, the
encoders I see are up to 1000 per rev, that requires a pretty fast base
period to handle that, not? 2us ?
It all depends on the RPM. 1000 count/rev encoders would be fine with
software conting
at
Viesturs Lācis wrote:
It just does not make sense to me to treat extruder as another axis,
whose velocity would determine the amount of extruded material,
because the machine is going to move the extruder along its
coordinates at a given velocity, determined by F word in g-code. I do
not see
gene heskett wrote:
For stuff like this, it seems I should just buy an index of #10 to #70
carbide drills, but so far all I have found in the catalogs are TiN HSS
stuff.
Anybody here know of a supplier for carbide drills in teeny wire sizes?
Just look on eBay, there are a bunch of guys
Lars Andersson wrote:
-Original Message-
From: Jon Elson [mailto:el...@pico-systems.com]
Sent: den 7 februari 2012 05:51
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] AXIS default jog speed on A-axis
Better yet, in HAL you can compute vector velocity of the X Y
gene heskett wrote:
That led to Think Tinker which I've heard of favorably before, so I made
out an order, but they declined the card, and when I tried to back up and
check it (there's a 5 digit balance), they cleared the order page. Not a
friendly site at all for for doing business over
gene heskett wrote:
I would think I can probably do that here Jon, since pcb-gcode uses the
engraving bit to spot a starter dimple for the following drill operations.
When I was off a couple thou, I've seen a #67 drill actually bend and use
the marked spot a few times. At 18 thou, I
Well, maybe I ought to chime in. Hardly anyone writes
machine code anymore, higher level languages have so many
benefits, and the performance to be gained is now minimal.
So, maybe we should think of G-code in the same manner.
This is about the way I use it. I haven't written any G-code
in
Stuart Stevenson wrote:
Gentlemen,
I see a problem with using gcode generating software languages to
machine complex geometries. In my world all gcode generating software
languages will undercut or gouge the material deemed to be the desired
material to include in the desired part.
Well,
andy pugh wrote:
On 8 February 2012 05:01, Jon Elson el...@pico-systems.com wrote:
I might suggest crating a custom HAL component to do the S * factor *
sqrt(X^2 + Y^2) just to cut down
on all the procedure calls
http://www.linuxcnc.org/docview/html/man/man9/hypot.9.html
Stuart Stevenson wrote:
I would be willing/able to contribute to the process in some manner. I
don't care so much about the 'free' description, I want APT on linux.
If it has already been translated from FORTRAN to C, and is text-based
(as opposed
to graphical) then it should be easy to run
Dave wrote:
The D510MO was discontinued by Intel.
I'd go with the Intel MW525 board instead. You can buy them from almost
everyone and they work well with LinuxCNC.
Plus they have a real DB25 LPT port! :-)
They take laptop memory instead of desktop memory sticks but that has
been
gene heskett wrote:
On Thursday, February 09, 2012 12:38:04 PM Ben Jackson did opine:
On Thu, Feb 09, 2012 at 11:23:47AM +0200, andy pugh wrote:
It is servo-thread only as it uses floating-point. I am not entirely
sure why.
Aha, that's why I added the laser-thread in my
Kirk Wallace wrote:
My understanding is, it is because RTAI (loadrt) has no floating point
functions. Floating point has to be done in userland (loadusr). But now
that I mention it, then why would one specify even a servo thread? I
guess I don't have an understanding.
No, sorry. The servo
Erik Friesen wrote:
I have been puzzling over how to deal with double sided routing of 1 pvc.
Currently I am working on a 12 x 12 square area, with 10 work pieces
arrayed out. Each part has a couple 1/8 zero holes that I use to line up
when I flip the pvc. The problem lies in the fact that
gene heskett wrote:
Hi Guys;
I just broke my last brand new 1/16th carbide end mill in about 15 minutes
running time, a 4 flute with about 1/2 of working length, trying to get
started on another alu encoder wheel, getting about 80% of the way around
the outside, running at 2500 revs, and
gene heskett wrote:
This particular sheet of alu seems to be dead soft. The chips it was
making looked about the right size spinning around in the oil.
Well, that may be the problem. You do NOT want to keep recutting the same
chips. You want a steady stream of something to remove the
gene heskett wrote:
Guy's, maybe I don't understand cutting alu as well as I thought.
All along, I have believed that it was more important to keep the oxygen in
the air away from the cutting surface in order to slow the formation of alu
oxide on the surface, which in normal air, not
gene heskett wrote:
Roland Jollivet roland.jolli...@gmail.com wrote:
Taken directly from the OSG 2-3 flute carbide end mill section.
dia rpm feed (ipm)
.01510 7.1
.02062000 7.9
0.034 7.9
0.0625 21200 7.9
5/64
gene heskett wrote:
This effect was discussed at length when we made the first 'test' cases for
our tv cameras out of alu we had cad plated back in 1960 and discovered
that no amount of cad plating could protect them from 8 hours over the side
of an LST 50 miles west of San Diego.
I am NOT
Mark Cason wrote:
Can anybody recommend what type and shape of insert to use to turn a
2 piece of pre-hardened 4140?
I need to get a fairly decent finish, and I understand I will need
one insert for roughing, and a different one for finishing. It's a part
for my CNC mill, and I
Peter Blodow wrote:
Climb milling is preferable if the backlash of your screw will permit
it. Blades will always cut into fresh material, less friction, less
heat. With small cutters, you may compensate for backlash with a fairly
large retaining spring.
Climb milling can be a problem
gene heskett wrote:
my trial copy timed out. http://www.mrmachinist.net/
I just checked, it seems to still have the feed rate, etc. calculator.
Needs wine $70.
Do they have a trial version?
Since I have yet to stumble over a suitable pan to catch recycle the
coolant, air
dave wrote:
I suspect the only reason to use carbide is that small HSS mills are
really flexible.
Well, it is both a hardness/wear resistance issue and a stiffness
issue. I VERY rarely
use small HSS tooling for this reason. Our shop at work is guys from
the old school
and almost never
dave wrote:
GOOD GRIEF!! and I thought 0.003 on X and Y was bad.
Well, that was the original 1938 Acme screw and bronze nuts. The threads in
the center of the X screw are thinner to the extent you can see it from
ten feet
away! Now, I have a backlash of about .001 - .0015 on all the axes
gene heskett wrote:
And the guy you bought it from claimed very little wear I'll bet...
No, no, they were honest that it was beat, it was the last one at a HUGE
auction after
everybody had taken the good stuff. But, it was a SMALL machine,
significantly
smaller than J-head Bridgeports,
James Louis wrote:
Are there any example wiring diagrams available for this easy closed loop
stepper configuration?
Take a standard Universal Stepper Controller, and get it working with drives
and motors of your choice. Add encoders, and flip the DIP switch on the
board
to select the encoder
gene heskett wrote:
What I have ATM looks like it is about 60-65% blocked, 35-40% open for slot
width vs web width between the slots.
These devices claim a 0.060 aperture, and these slots are perhaps 0.070
wide, with a slot spacing of about .155, so I'm thinking I need more block
than
Don Stanley wrote:
Hi All;
I just assembled my new D525MW computer system.
When I apply power to the system the D525MW powers up
for two seconds then powers down again.
I built a little circuit for the D510MO to do this. You need to find out
which power switch pin is the signal and which
andy pugh wrote:
On 18 February 2012 04:41, gene heskett ghesk...@wdtv.com wrote:
Well, I'm trying to maximize the amount of time that LinuxCNC has to grab a
valid sample
You have been here years, surely you are not still persisting with the
parport?
Jon and Pete make fairly
gene heskett wrote:
Ahh, yup, I guess so. I am going to get another of those back to school
specials with the D525MW board in it, and another C1G interface two more
of those MM-542 drivers. Since those mobo's only have one very narrow PCI-
E slot, and that particular box hasn't a back
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