On Wed, 2011-12-28 at 12:03 -0500, gene heskett wrote:
There are hall effect based ammeters
A while back, I mooched a Tek Hall-effect current probe from my buddy
Eks to take some interesting pix:
http://softsolder.com/2011/06/20/stepper-sync-wheel-current-waveform-first-light/
On Thu, 2011-12-29 at 21:14 -0500, gene heskett wrote:
pointers to the articles
That was a series on transformers triac triggering, with a resistance
soldering setup as the McGuffin. CC doesn't put articles online (if you
know where to look, go for April/June/August 2008), but I put up some
On Fri, 2011-12-30 at 16:33 -0500, Jim Coleman wrote:
how stable the voltage remains across a range of loads
I really didn't measure that, but I think the core losses are just this
side of terrible. After all, they used core saturation for output power
control, so reducing losses probably wasn't
On Thu, 2012-01-12 at 17:28 -0500, gene heskett wrote:
get another armload of 2 1/2 ring binders
If you can stand to wait for a bit, I'll run off a booklet-sized version
and send it to you. The printer uses bulk ink, I've finally got the
restack orientation down to a reflex, and I have a comb
On Fri, 2012-01-13 at 10:09 -0700, Cathrine Hribar wrote:
if the steppers are wired in series, like I wired mine,
they would require twice as much current
Having waded through this mess not too long ago, here's what I (think I)
know...
Putting the two halves of a single pole's winding in
On Tue, 2012-01-17 at 20:30 -0500, gene heskett wrote:
If I fix the library,
will that fix the schematic when it is next loaded?
Nope, the schematic holds copies of all the components, so that you
can't inadvertently wreck all your circuits with a single library
change.
You must delete all
On Wed, 2012-01-18 at 00:03 -0500, gene heskett wrote:
Alright, how about this one?
That'll work! [grin]
And who knows? My Larval Engineer may remember how to poke around inside
the safety covers without dying, in some future day when they
desperately need a fix right *now*...
--
Ed
On Wed, 2012-01-18 at 13:46 +1100, Erik Christiansen wrote:
Nope, to update the library info used in an open schematic editor, hit
Library-Update and select the modified library, or just use
Library-Update_All.
That's exactly what I expected to work, but it didn't:
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 to mix / simultaneously extrude
On Sat, 2012-01-21 at 21:27 +0100, Michael Haberler wrote:
LinuxCNC in the chipmaking corner of the CNC universe.
Which it does exceedingly well!
For a number of reasons, I don't like the Arduino-based motion control
that's common to DIY 3D printers and would vastly prefer LinuxCNC for
the
On Mon, 2012-01-23 at 14:56 -0500, gene heskett wrote:
by destroying that known position as the homed flags are set.
Although I *do* have home switches on the Sherline, I also inserted
[TRAJ]
NO_FORCE_HOMING = 1
So it doesn't enforce the must-home-before-moving rule.
Axis then starts up
On Mon, 2012-01-23 at 22:34 +0200, Viesturs Lācis wrote:
also tells Axis to remember joint positions on shutdown
It's a simpleminded XYZA Sherline mill that wouldn't know what to do
with a joint if it saw one...
--
Ed
http://softsolder.com
On Tue, 2012-01-24 at 00:12 -0500, gene heskett wrote:
Its doing all moves on the .bot. files
in negative X from the reference point
I'm pretty sure there's a checkbox along the way that reads Mirror X
axis to make that answer come out right without any further attention.
The Eagle gerbv274x
On Tue, 2012-01-24 at 18:04 -0500, gene heskett wrote:
if I can insert those few lines of code after the M6 T# command.
If you add:
[EMCIO]
TOOL_CHANGE_AT_G30 = 1
Then M6 will move to the G30 position, which you've cleverly set right
above the probe switch. Admittedly, you must then call the
On Wed, 2012-01-25 at 22:20 +, andy pugh wrote:
Even that is potentially optional:
Oh, *wow*... Yet Another Way to confuse myself beyond recognition.
I must put the tool probe switch somewhere more-or-less fixed before I
start invoking that code, but I like what it can do!
--
Ed
On Fri, 2012-01-27 at 12:26 -0500, gene heskett wrote:
The LM317T is a linear regulator device
and could be made adjustable so as to compensate for the wiring and
switching loss in your controller.
Judging from Viesturs' description in a later message:
Nope, I see 2 resistors in series for
On Mon, 2012-01-30 at 23:35 -0500, gene heskett wrote:
htop shows 2 cpu's with the 2nd one sitting at 0.0% use.
As I understand it, that's the way it should be.
The point of isolating the second CPU / core / whatever is to dedicate
it to the real-time parts of RTAI, thus reducing interrupt
On Wed, 2012-02-01 at 10:59 -0500, Tom Easterday wrote:
run the latency-test on the idle core AND run glxgears there (using
taskset to move it too), my latency is very bad.
That makes perfect sense: the video involved in glxgears locks out
interrupts for protracted periods, so running it on the
On Thu, 2012-02-02 at 09:36 -0500, gene heskett wrote:
that would require a function generator
Perhaps gimmicking up a HAL circuit with siggen or freqgen to drive the
stepper, then compare the encoder input with the motor output? You
probably don't need a sine wave, just drive the motor back
On Thu, 2012-02-02 at 22:21 -0500, gene heskett wrote:
what can he use for an exciting signal?
It seems I'm missing something obvious. I thought the idea was to move
the motor back forth while comparing the commanded (presumably, the
actual) position with the encoder's (also, presumably, the
On Mon, 2012-02-20 at 17:42 -0500, gene heskett wrote:
4. All logic outputs with the slots open
are sitting at about 18 millivolts.
The doc says a high output when the optical path is clear, so
something's definitely wrong...
If that were my board, I'd expect the top-surface ground line
On Tue, 2012-02-21 at 16:15 +1100, Erik Christiansen wrote:
But it has banana sockets, so it'll do me.
Murphy also has his way with them, particularly nowadays:
http://softsolder.com/2012/02/08/power-supply-banana-jack-misfit/
Grumble...
--
Ed
http://softsolder.com
On Tue, 2012-02-21 at 23:37 +1100, Erik Christiansen wrote:
the last paragraph of the wikipedia entry for banana connector
Seems to me that's an eBay market opportunity: who could possibly object
to a small envelope with a gift from afar?
--
Ed
http://softsolder.com
On Tue, 2012-02-21 at 10:46 -0600, Jeff Epler wrote:
approval of a user's initial post will be required.
My admittedly limited 3-year experience with my Wordpress-based blog
shows that exactly zero spammers have figured out how to post one
meaningful, on-point comment in order to clear the
On Wed, 2012-03-14 at 11:04 -0400, gene heskett wrote:
And that man page is as obtuse as any I've seen.
Rather than hammering that out by hand, use the remote desktop built
right into Ubuntu?
On the Ubuntu machine attached to the mill, clicky:
System - Preferences - Remote Desktop
Then
On Wed, 2012-03-14 at 22:23 -0400, gene heskett wrote:
PClos on this quad core phenom.
Well, OK, use whatever *PClos* uses for remote desktop sharing... it's
not like PClos is some mutant without all the usual Linux stuff tucked
away under the hood.
linuxcnc runs just fine from its own
On Mon, 2012-04-02 at 23:12 -0400, gene heskett wrote:
so if it did do an automatic save
Among the other things I set up with a new OO/LO installation:
Tools - Options - Load/Save General - check Save AutoRecovery
information every and set the timer for 10 minutes
That dramatically improves
On Wed, 2012-05-30 at 19:29 +0200, Roland Jollivet wrote:
The thing is, what do you do with these parts?
Some examples of stuff I've designed build used...
A case for a GPS+voice amateur radio circuit:
http://softsolder.com/2012/04/13/wouxun-kg-uv3d-gps-interface-functional-case/
Adapter to
On Fri, 2012-06-01 at 08:44 -0400, gene heskett wrote:
the bolts are 3/8 but the holes are 7/16
In this case, the bolts were 7/16 and the holes 3/8... [grin]
--
Ed
http://softsolder.com
--
Live Security Virtual
On Fri, 2012-06-01 at 10:10 -0400, Eric Keller wrote:
anyone that makes things
Unlike folks who use industrial-grade machinery to build exquisite
widgets (you know who you are), mostly, I fix stuff.
Being able to sketch out a solid model and then have it *happen* is
wonderfully liberating. The
On Sun, 2012-06-03 at 21:08 -0400, Dave wrote:
buy one or two PID controllers.
The slicing software can produce different extrusion temperatures for
different layers (or classes of layers), so the printer needs
programmatic control over *everything*. You may as well integrate all
that in
On Mon, 2012-06-04 at 08:44 -0400, Dave wrote:
Who hold the patents?
The big players that have been doing 3D extrusion since the mid 80s, the
ones with positive cash flow and actual engineering teams. The Wikipedia
article has a list:
https://en.wikipedia.org/wiki/3D_printing#Industrial_uses
On Mon, 2012-06-04 at 11:53 -0600, Jeshua Lacock wrote:
you are basing this on what?
Rumor, supposition, hearsay, random tales, and watching the slow-motion
destruction of mobile phone innovation through internecine IP warfare.
The fact that a judge had to rule that APIs can't be copyrighted
On Mon, 2012-06-04 at 18:31 -0600, Jeshua Lacock wrote:
Also, as far as I know, Makerbot et al have not had
much of a legal battle so far.
True, but now that they're doing something over $5 M/yr with substantial
funding, they look more like a target. Again, I know nothing other than
the
AXIS 1.4a0 EMC2 2.0.4 (stock iso + all updates)
This story takes a while to set up...
While cutting out a cam that involves lots of fiddly
motions, my (mostly stock) Sherline mill gradually forgot
its origin position and would have, had I not popped the
Esc key, gnawed its way right through
As nearly as I can tell, Axis always jogs in inch units,
even in G21 mode, even when displaying millimeters.
Fire up Axis, F1 F2 to get started, F5 type G21 for
metric units, View - Show MM, then F3 to get manual
controls. Select X axis, pick 0.1 jog increment from the
list, then click the
While a better choice in emc 2.1 would have been to treat
the jog distance as in the currently-displayed coordinate
system
That would definitely have obeyed the principle of least
surprise...
I think the version 2.2 solution will be even better.
Sounds good to me.
Be sure to include both
Gene: Where and when is this Cabin Fever supposed to be?
York, PA. Two weekends and counting:
http://www.cabinfeverexpo.com/
More info should be up shortly; I just sent in a
description.
Gene: another emc article in Circuit Cellar?
I write about analog and RF stuff for them, but, hey,
are you going to video the talk and
place the video where we can see it?
I don't know what the show organizers have on tap, but I
wasn't planning to immortalize the thing!
I could put up the PDF version of all the slides I'll be
using (where? suggestions?); it's about 8 MB. Plenty of
pix,
with the 'patter' would be golden.
I briefly considered hitching a Webcam+mic to my laptop, the
one running the presentation, and recording on the fly.
Then I came to my senses.
If anybody else will be there with audio or video recording
gear, we'll go for it... but I'll have enough to do,
About 50 people showed up for my Why CNC? An Introduction
talk at Cabin Fever Expo, perhaps ten snuck out early, and
about two dozen hung around afterward for the demo. I think
a good time was had by all: the presenter wasn't injured
during the after-game melee.
I made a botch of the demo by
If someone needs it emailed, or zipped
A ZIP file won't be much smaller, alas, because the JPG
images are so large.
I just generated a version with brutally squashed pictures
that look pretty grotty, but the file is a mere 1.6 MB:
posted your introduction pdf to my site
Thank you!
I haven't been able to track down who did the video
recording during my talk. Does anyone know? If we can find
that tape, peel the audio track off, and put it near the
PDFs, that would be a good addition.
Why the kid's finger in disrepair?
Gene Heskett wrote:
When starting emc on its own screen, I
do get a realtime error, just one that never repeats.
That just cropped up here after I updated to 2.2.3. There's
one realtime error when Axis starts up, then nothing else.
I run it either locally or through rdc, with the same
A plaintive note from a lurker...
When you guys hit Reply to fire off a one-liner message,
could you -please- trim off the 1300-some-odd lines of
diagnostic trace / dmesg dump / status log that accompanied
the original note?
I'd appreciate it if folks replying to digest messages would
do the
I've offered to show off my Sherline CNC setup for a couple
of folks from the Sherline list who are thinking about
buying one. After considerable to-and-fro-ing, we've
settled on this coming Sunday, 24 September. If anybody
else is interested, c'mon over... I figure you guys all
know more
It is already November for this year.
And you know what? They're going to change the month -again-
in just a few days. I can't keep up any more!
This coming Sunday is actually 24 November. Right? sigh
I will be home: can't risk going out in this condition.
And that is a fur piece from
My 2008 one says this
Sunday is November 23.
Hey, we live here: just show up some time, OK?
From the back door, the head is on your right, the basement
door is straight ahead, and the kitchen is on the left.
What's not to like?
Pay no attention to the doddering fool in the living room
if Ed will be continuing similar articles in the future
That's the plan!
The Winter 08 column deals with fillets on internal corners:
using cutter comp and figuring the arc centers for mostly
right-angle corners. Pretty easy once you see it.
Next up: finding the centers when the sides aren't
Once upon a time, I wrote some gcode subroutines
Sure: I'm always interested to find out what I could do
better!
Or at least differently, as I seem to have a lot of code
sitting around that makes me wonder what I was thinking at
the time. Maybe nothing, aye, there's the rub.
Thanks...
--
The new algorithm handles concave corners
And here I am, halfway through writing the next installment
of Adventures in Filleting, explaining how to lay an arc
into a concave corner to avoid gouging. I am crushed, I
tell you, -crushed- by this horrible news!
big grin
The timing is actually
Here's a writeup of my Cabin Fever Expo adventures, with
Brian's incriminating picture. There's a link to my
handouts and I'll get more of my code up as examples of
what (not) to do.
http://softsolder.wordpress.com/2009/01/21/cabin-fever-trip-report/
Cabin Fever's demographics are grim; in a
cut out a pinewood derby car design.
bring my 3 axis router (kit built)
Given the Sherline's itsy-bitsy work envelope and
nose-picking speed, I think carving out -real- Pinewood
Derby cars on your router would be even better. Bolt a
block to a plate, clamp the plate to the base, and
After I posted the note about my Cabin Fever trip report a
week ago, that blog entry got a bunch of hits in quick
succession.
In round numbers, 176 people clicked on that link from an
actual email, a Web email client, or the many mailing list
archives scattered around the Web. Dunno how many
On 06/07/2014 03:24 AM, Gene Heskett wrote:
I keep telling myself he isn't ready for me yet.
One of my aunts had stroke that knocked her flat out on the kitchen
floor, but she thought Oh, no, you don't! Dragged herself over to the
table, pulled the tablecloth off to get her phone, dialed 911,
I M does not shows any working sample
Here's how I did it for my little Sherline mill...
Modify the Sherline control box to accept the wiring. This is an example
for the tool length probe line, but the same thing happened for the home
switch input:
On 07/16/2014 04:35 PM, a k wrote:
I did input
# Read home switch inputs from I/O card.
net x-home-sw = hm2_[HOSTMOT2](BOARD).0.gpio.026.in
net y-home-sw = hm2_[HOSTMOT2](BOARD).0.gpio.030.in
net z-home-sw = hm2_[HOSTMOT2](BOARD).0.gpio.034.in
Did you change the *example* HOSTMOT2 and BOARD
On 07/24/2014 09:06 PM, Gene Heskett wrote:
the real problem that caused the usb disconnect?
If the dmesg dump says something like:
hub 1-0:1.0: port 2 disabled by hub (EMI?), re-enabling...
Then I'll lay you long odds it really *is* EMI from your myriad steppers
and suchlike. Spent quite
On Sun, 2011-01-23 at 12:23 -0800, Neil Baylis wrote:
large or complex g-code files
The programs I've been writing for my Along the G-Code Way columns in
Digital Machinist aren't all that large, but they do exercise some
EMC2-specific language features. The more recent ones will probably be
the
On Sun, 2011-01-23 at 15:00 -0800, Neil Baylis wrote:
If there's demand, I would consider other
editors as well
I'll put in a vote for KATE, the KDE editor. It already has G-Code
highlighting, but, lacking EMC2's language features, it's pretty much
useless.
http://kate-editor.org/
--
Ed
On Sun, 2011-02-13 at 07:59 -0600, John Thornton wrote:
use a multiplexer to get 4 thermocouples into one MAX6675
Given the microvolt-level signals from a thermocouple, it's not clear
the signal emerging from a multiplexer would bear more than a casual
relation to the actual temperature. With
On Thu, 2011-02-17 at 13:39 -0600, Igor Chudov wrote:
I would like to use regular joypad buttons
I did that with my Logitech gamepad: the joysticks do gradual motion and
the buttons do on-off motion.
This should get you started:
On Fri, 2011-02-18 at 19:53 -0800, Kirk Wallace wrote:
I might not have to be the only one that's always right.
I regard it as my solemn obligation to be one of the two dozen folks who
are (almost) always wrong... after all, without me, how could you
possibly look so good? [grin]
--
Ed
On Mon, 2011-03-14 at 11:00 +, andy pugh wrote:
which caused some worrying sizzling noises.
Obviously, your radio isn't turned up nearly loud enough...
(Which helps with car repairs, too.)
--
Ed
http://softsolder.com
On Fri, 2011-03-18 at 20:58 -0500, Jon Elson wrote:
pre-measuring all your tools and entering the
length offsets in the tool table,
so you don't have to touch off at each tool change.
Or you can add a tool length probe station and have tool length
measurement happen automagically, without
On Sat, 2011-04-02 at 15:33 +0100, Steve Blackmore wrote:
The custom kernel says edit menu.lst - doesn't exist any more
The Grub2 file is /boot/grub/grub.cfg. It looks different, but gets
basically the same treatment as Grub1's menu.lst.
But it's actually worse than that. The grub.cfg file gets
On Mon, 2011-04-11 at 09:51 -0700, Kirk Wallace wrote:
a page on the wiki covering the making of bellows.
For those of us with Sherline mills and no flood coolant, plain old
paper works surprisingly well. You don't form a deep emotional
attachment to it, so throwing it out when it gets really
On Sat, 2011-04-09 at 21:41 -0400, Kent A. Reed wrote:
Kudos, brickbats, big yawns, gleeful
nitpicking, all willingly accepted,
Well, here's a heaping double handful of kudos from me!
Your script bottles up a whole bunch of magic that I certainly couldn't
have figured out on my own.
On Sat, 2011-06-11 at 19:17 -0400, Colin K wrote:
you can make very complex geometries
without multiple setups or fixtures
That's why I got a Thing-O-Matic: create near-net parts that don't need
much finishing. This one came out perfectly:
On Sat, 2011-06-11 at 23:54 -0700, Mike Payson wrote:
that is a limitation of the Makerbot firmware.
As nearly as I can tell, ReplicatorG has become sufficiently
intertwingled with the firmware that it's best to not stray too far from
the beaten path, so I'll continue to use the 2.7 firmware
On Sun, 2011-06-12 at 14:33 -0700, Mike Payson wrote:
a bit of a Makerbot champion
The *idea* behind the Thing-O-Matic is great, but the *implementation*,
well, not so much. Plus, all the things on the their wishlist seem to be
done deals with EMC2, but I digress.
ship it, then sell them an
On Mon, 2011-06-27 at 13:41 -0700, For Sale Sticker wrote:
'leadscrew pitch' (do I just count the number of threads per inch?)
It's barely possible that the leadscrew will have a multiple-start
thread, making the linear-motion-per-turn higher than you'd expect from
a simple count of the
On Sat, 2011-08-13 at 08:50 -0400, gene heskett wrote:
under the vesa driver on an ati x1650 video card
I ran into something like that on a Foxconn dual-core Atom D520 box that
I'm sliding under my Thing-O-Matic: the default video setup sent
1024x768 dots to a 1280x1024 monitor and didn't offer
Copying to user-provided flash drives instead of handing
out CDs is a great idea, especially because it makes the
user participate actively rather than just grab
reflexively.
Although that's true, I think trying to do anything that
smacks of system administration while on the show floor is
I narrowed down your program into a very short one:
Well, that's certainly easier to follow!
Thanks for the flensing... grin
--
Ed
--
Crystal Reports - New Free Runtime and 30 Day Trial
Check out the new simplified
Given that money is power, I propose we measure report all
financial changes in decibels.
Hearing The Dow was down 3 dB yesterday wouldn't be very
disturbing, would it?
Your previously extortionate 20% credit card rate would drop
to a mere 0.8 dB.
But your CDs would yield 0.08 dB and let's
... if anyone will be set up there again this year
I'll bring my little Sherline CNC mill stack o'
simpleminded projects again. If the conference room isn't
full up, I'll do my Why CNC? An Introduction song dance
routine, too.
Gotta start printing some handouts pretty quick!
--
Ed
I'm beating a tool-height probe switch into submission and
want to make sure I'm not misinterpreting what I see; the
relevant sections of the EMC2 version 2.3 doc are not
entirely forthcoming.
Here's how I think the pieces work...
The coordinates stored by G30.1 in #5181-#5186 are always in
In Axis 2.4.0, is it true that the tool table can have only
48-ish entries?
I'm drilling circuit boards from Eagle layouts, using a
script that extracts all the holes, sorts them by drill
diameter, then visits each set in nearest-neighbor order.
The problem is that Eagle's part libraries have
I got inspiration from these two sites
I ran a quick-and-dirty test on the repeatability of my ugly
tool length probe switch and discovered that it works
surprisingly well:
http://softsolder.wordpress.com/2010/04/17/ugliest-tool-
length-probe-switch-repeatability/
Shorter link:
It seems the Intel D510MO board works fine with the new
10.04 SMP version of EMC2, but one must wrap a box power
supply around it, then kludge up a parallel port connector.
Does anyone have an opinion on the $130 (+$5 shipping)
Foxconn R3-D2 (or similar) barebones system? It has an
Atom 510,
Stay away from Foxconn,
I went through three motherboards in a row
That's the sort of experience I was looking for...
This is surely the same Foxconn that makes all the fancy
consumer electronics for all the Big Names, though. Perhaps
those contracts pay for better reliability?
Since we
some G code snippets
A somewhat improved version of the probe length routines are
down near the bottom of this post:
http://softsolder.com/2010/06/15/water-bottle-spring-cap-
repair/
Shorter link: http://wp.me/poZKh-1cI
I found that using the G59.3 coordinate system for probing
prevented
Is anybody out there using Martin Schoeneck's Eagle2HAL configuration
program?
http://wiki.linuxcnc.org/emcinfo.pl?Eagle2HAL
I'm writing up my Logitech gamepad Joggy Thing for Digital Machinist and
realized that it's *much* easier to talk about circuit diagrams than
lines of HAL code. I
On Tue, 2010-10-19 at 08:57 +0200, Martin Schöneck wrote:
I only used it for my own configuration
That's pretty much what I had in mind, too!
I'll take a look at your changes and send you mine; between the two of
us, perhaps we can scratch *both* our itches and make something useful
to
I tweaked Martin's original Eagle ULP a bit, added some library devices,
then built a schematic to connect my Logitech gamepad Joggy Thing as an
EMC2 pendant.
The grisly details, links to background info, and current files are at:
On Sat, 2010-10-23 at 09:41 -0400, Kent A. Reed wrote:
document existing configurations
That's sort of what pushed me into getting the schematic converter
running: I wanted to tweak my existing Logitech HAL configuration, but
the prospect of figuring out how it worked seemed too painful for
On Sat, 2010-11-13 at 14:38 +1100, Erik Christiansen wrote:
The easiest way to increase the high-state output voltage, when it's
only getting to three-and-a-bit volts, is to add a pull-up resistor.
Be careful: the parallel port's output transistor probably doesn't have
a particularly high
On 05/13/2013 02:01 AM, Rafael Skodlar wrote:
emerging personal 3D printing.
G-Code is largely irrelevant for 3D printing: it's nothing more than an
intermediate machine language between the slicer and the printer.
The complexity of the motions required to produce a single layer of a
model
On 05/13/2013 08:43 AM, andy pugh wrote:
feed it STL rather than G-code
Or, perhaps, an OpenSCAD model in source-code format, although you'd
really want a better set of primitives that take advantage of arcs and
suchlike.
STL can't handle multiple colors / materials, has only triangle
On 05/13/2013 06:41 PM, Gregg Eshelman wrote:
As for sketchup, unless it's seen some massive debugging and improvements,
it's a very nice utility
for creating some of the most fouled up 3D geometry
Aye!
But the objects *look* good, so they should print fine. Right? [wince]
I've given up
On 05/14/2013 07:08 PM, Eric Keller wrote:
cut a hole in the family room floor
My buddy Eks got a spectacular deal on a CNC mill that was too tall for
his shop doorway: he had to dismount the head. Then, of course, there
was no clearance for a hoist between head and ceiling, so he drilled a
On 05/15/2013 10:46 AM, Gene Heskett wrote:
he'd have to patch it
Oh, he did, and IIRC cut the carpet as a flap that laid down neatly over
the plug... he's that kind of guy.
But even if had been a hardwood floor, well, he *is* that kind of guy.
a job fixing them newfangled TV thingies
On 06/01/2013 12:39 PM, Charles Steinkuehler wrote:
I particularly like the acceleration control in LinuxCNC.
It seems smoother than the Arduino code.
At least on the Marlin firmware branch of the RepRap tree, the interrupt
handler switches from one-step-per-interrupt to two/interrupt at 10 k
On 06/02/2013 03:16 PM, Dave wrote:
If you are using a USB joystick as a pendant, which model are you using??
At least for my Sherline, a Logitech Dual-Action gamepad works
wonderfully well. Here's the initial description:
On 06/02/2013 03:50 PM, Karl Schmidt wrote:
improved surface finish
Not really. The slicing software adjusts the extrusion speed to match
the XY speed, so the printer lays down a consistent amount of plastic no
matter what speed you choose.
That's the theory. In practice (and for my setup),
On 06/13/2013 06:12 PM, Charles Buckley wrote:
1) None of the current GUIs are really good for this,
I've been using http://gcode.ws/ to visualize the actual paths within
each layer, but that's probably too weird for most folks.
Keeping the spool sync'd with the filament feed rate
Recently
On 06/15/2013 08:43 AM, Viesturs Lācis wrote:
take a look at probekins,
That's exactly why I'm so enthused about automagic platform probing:
somebody else wrote the kinematics module! [grin]
--
Ed
softsolder.com
--
On 06/15/2013 12:04 PM, Charles Buckley wrote:
you could treat the spool feed as an
additional axis whose feed rate is the same as the 4th axis.
I think that would come heartbreakingly close to working, because the
feed rate depends so much on the effective diameter of the
gear/pulley/wheel.
On 06/15/2013 09:01 AM, Viesturs Lācis wrote:
I have no idea, how difficult that actually might be.
Given the requirement that it match the extruder nozzle height to within
0.05 mm (more or less) over a wide temperature range, it's a *very*
tough problem. I think separating the nozzle height
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