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 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
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 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,
On 09/12/2013 03:04 PM, Sven Wesley wrote:
Awkward and 99.999 % are printing yodas.
Those of us in that tiny fraction print *useful* objects:
http://softsolder.com/2013/05/23/led-photodiode-test-fixture/
http://softsolder.com/2013/04/01/broom-handle-screw-thread-replacement-plug/
On 08/28/2013 04:27 AM, Sven Wesley wrote:
But link rot is a dead link.
That's what I mean: if they'd just put a link to the pages they ripped,
when those pages go away, they've got link rot.
Although I'm not planning to Go Away any time soon, they don't know
that, which means ripping the
On 08/28/2013 05:07 AM, andy pugh wrote:
we do claim to embrace Open Source after all.
Or, perhaps, Free Software.
The license terms differ significantly between the Open and Free
models, but I know what you mean: standing on the shoulders of giants
and all that.
Me? I'm about a millimeter
On 08/27/2013 06:11 PM, Sven Wesley wrote:
Amazingly well written.
If ripping someone's blog posts in their entirety counts as flattery,
then I'm honored by their LinuxCNC Touch Probe writeups: items 1, 3, and
4 in that section seemed *very* familiar. [grin]
Compare:
On 08/20/2013 05:20 AM, Tolip Wen wrote:
I don't know where to get 3 Adruino's for $16 though.
Knockoff Arduino Pro Minis go for $4.50 in lots of 10, direct from
Shenzhen via the usual eBay vendors...
The boards are 0.7x1.3 inch = 18x33 mm; they won't quite hide under a
quarter, but they're
On 07/18/2013 02:04 PM, Stuart Stevenson wrote:
I had a handful of mylar dots from a tape punch.
A long time ago in a universe far away, our ancient college dorm had a
huge in-wall vent fan blowing air from the corridor across the top of
the shower stalls. Perhaps that was easier than routing
On 07/18/2013 10:33 AM, Michael Haberler wrote:
your biggest-sized G-code program ever
Slicer programs for 3D printing spit out astonishingly long files; the
biggest ones seem to be in the 10 to 15 MB range, with around half a
million lines.
Nothing very complicated, but a whole pile of it...
On 06/30/2013 07:55 PM, Gregg Eshelman wrote:
combined with a smaller nozzle hole.
Below diameters of about 0.25 mm the nozzle tends to clog with ordinary
room fuzz. Cleaning the filament helps, but, in round numbers, you're
still stuck with barely sub-millimeter-ish XY resolution: a
On 06/27/2013 02:37 AM, Steve Blackmore wrote:
so I don't see what advantage having the printer connected to LinuxCNC could
be
It should avoid little nasties like this (scope pix near the end):
http://softsolder.com/2013/06/04/marlin-firmware-stepper-interrupt-timing/
Arduino-class
On 06/26/2013 12:06 AM, Matt Shaver wrote:
When the 3D folks discover that they need offsets or homing, or any of
the other features of linuxcnc, we'll be there to help.
That's what I plan to demonstrate: get the M2 running with LCNC as many
folks have already done, then pile on improvements
On 06/18/2013 03:41 AM, alex chiosso wrote:
Is there any way to design a hal file graphically ?
I've been tinkering with Eagle libraries and Eagle2HAL:
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Eagle2HAL
A complete schematic for my Sherline mill, including the USB gamepad
Joggy Thing and a
On 06/16/2013 01:24 PM, Gene Heskett wrote:
Coyote being the handle I'd been using since about 1962.
Ah, now, were you kye-OH-tee or COY-ote?
I have an amateur radio in the van, but discovered I don't have enough
brainpower to drive and talk at the same time. Heck, I can barely drive
and
On 06/16/2013 04:24 AM, Erik Christiansen wrote:
current printer implementations just drag the spool
with the filament feed capstan
It's brutally simple: the filament drive hauls filament through a
flexible tube that arches between a holder at the spool and the
extruder, so the drive must
Webcam.
See? That's why I love LinuxCNC: you actually *could* replace a pair of
microswitches with a webcam and a dollop of image processing software!
And it would make sense, because the webcam would eliminate mechanical
constraints. It might also give better performance at a lower cost, at
On 06/16/2013 08:02 AM, Kent A. Reed wrote:
relocating the filament spool above the printer
The ones I've seen align the spool axis with Y axis, with the filament
unrolling from the top toward the center of the printer along the X
axis. I think that's a good non-powered approach that shouldn't
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
On 06/15/2013 07:50 PM, Charles Buckley wrote:
a diff between the A axis and the B-spool axis for amount of material feed
Ah, but then we must quibble about the difference coefficient, which
you'd have to measure per filament, then have to worry about diameter
changes messing it up. If you
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 06/01/2013 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 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 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 04/16/2013 07:53 PM, Gene Heskett wrote:
That long?
Back in the day, when the usual group met at a friend's house for
burgers and car fixin', that was his standard warranty. He also had a
caveat: while he was willing to help you fix anything, you couldn't
complain if you took some leftover
On 04/16/2013 08:48 AM, andy pugh wrote:
It would be nice to be able to generate a nice HAL diagram
I recently beat the Eagle-to-HAL scripts and libraries into producing a
complete HAL configuration for my Sherline, with USB Joggy Thing, XYXA
axes, probe home switches, plus the default manual
On 04/11/2013 11:20 PM, Gregg Eshelman wrote:
The radius of the points of the triangles is given as 0.228 inch
I read it as 0.22R, which is almost exactly half the 0.438 DIA given
for the holes. Using 0.438/2 would be Close Enough, methinks.
That'd be fun to construct on a 3D printer... one
On 01/14/2013 03:35 PM, Chris Morley wrote:
added to the 5i25/7i76 combo
I missed that; it would certainly solve the I/O problem in big way, too.
Have I also missed a giant Mesa configurator showing how all the bits
pieces fit together? Admittedly, I must spend more time pondering the
TL;DR summary: advice needed on a LinuxCNC-based 3D printer project.
The background...
About a year ago, high-end DIY 3D printers outstripped the capabilities
of Arduino-based controllers: the gymnastics required to stuff
acceleration control into 8 bit microcontrollers appears to be a dead
On 10/30/2012 10:12 AM, Gene Heskett wrote:
anyone who will sell me carbide #68's in ten packs w/o a 3 digit price yet
eBay is my parts tool locker:
On 10/18/2012 07:59 AM, Ron Ginger wrote:
Any volunteers to give a talk?
I could spiff up my Intro to 3D Printing presentation and do an hour of
performance art:
http://softsolder.com/2011/10/11/lilug-meeting-presentation/
My talk for the local ACM chapter covered more of the math and
On 10/16/2012 06:10 AM, charles green wrote:
what would it take to produce printed armor?
If you're not too fussy, you can print (small pieces of) chain mail in
one pass:
http://softsolder.com/2011/06/03/thing-o-matic-chainmail/
Which might protect you from the Barbie Pistol:
On 10/16/2012 06:35 PM, Igor Chudov wrote:
having some real fun with their 3D printers!
Oh, no, that's not fun. It's *practice* for serious projects!
Like, for example, we decided to reinstall a freezer shelf after quite a
few years of disuse, only to discover that one of its brackets had gone
On Sun, 2012-09-09 at 12:37 -0400, Kent A. Reed wrote:
Using the hot key sequence I can switch between ports
connected to MS Windows systems or from one of them to a port connected
to a Linux system but not vice versa. I have to use the port-selector
buttons on the case to switch from a
On Mon, 2012-08-06 at 10:10 -0400, Dave wrote:
I think I would have looked (desperately) for a different solution.
One of the engineers (in the movie they put out before the event)
observed that the whole series of maneuvers was crazy, but it was the
*least* crazy way to accomplish the
On Thu, 2012-07-26 at 22:04 -0600, Jeshua Lacock wrote:
deliver low cost more than anything
There's a good reason why the commercial outfits charge what they do
(other than that they can). But the resolution of DIY printers is now
good enough that second-order stuff like rigidity and control
On Wed, 2012-07-25 at 22:19 -0600, Jeshua Lacock wrote:
like what for instance?
Stabilized build environments, extruders with flow-control valves,
improved filament feeders, less rickety mechanics...
Basically, all the obvious improvements. [grin]
--
Ed
http://softsolder.com
On Wed, 2012-07-25 at 01:15 -0600, a...@conceptmachinery.com wrote:
problem with reprap is that their main idea is to make cheap machine
-under $ 1000- but not real rapid prototype machine.
Although I don't have any inside information, I believe the reason DIY
3D printers have (or don't have)
On Wed, 2012-07-25 at 11:14 -0600, a...@conceptmachinery.com wrote:
Patent in US has only 15 years life.
That is, unfortunately, incorrect, but the right answer isn't easy to
figure out:
http://www.patentlens.net/daisy/patentlens/2973.html
All those patent that you refer are too old and
On Fri, 2012-06-29 at 00:59 -0600, Jeshua Lacock wrote:
Ultimaker is currently the fastest
(possibly highest quality too) hobby plastic extruder
The Bowden extruder notion seems to have more trouble with ooze: half a
meter of filament beyond the drive wheel prevents fast retraction.
Reducing
On Thu, 2012-06-28 at 10:50 -0400, John Stewart wrote:
I don't remember being that impressed with their x/y speeds
They tend to produce better results below 30 mm/s, mostly because the
stock firmware doesn't use any acceleration limiting at all, and I've
seen some down around 10 mm/s near my
On Wed, 2012-06-27 at 21:20 -0400, Stephen Dubovsky wrote:
his X3 sized mill does 300ipm
That certainly puts it in the running!
What are the acceleration rates on the dedicated machines?
Given my heavy custom build platform and 12 V stepper supplies, the
accelerations aren't all that
On Mon, 2012-06-11 at 22:07 -0600, Jeshua Lacock wrote:
it supports two extruders
It has only one thermocouple input, so I'm not sure how you'd control
the second extruder head temperature.
Being an Arduino, it does have half a dozen analog inputs for
thermistors. I don't know whether the stock
On Tue, 2012-06-12 at 13:22 +0200, Joachim Franek wrote:
Why not use a dmm with rs232 or usb?
A quick glance at the search results suggests that the combination of
thermocouple and usb runs about $100 direct from China and *much*
more than that from a reputable supplier.
You'd need a pair for
On Sun, 2012-06-10 at 18:09 -0600, Jeshua Lacock wrote:
try the MakerBot extruder controller
My experiences with that thing may save you some heartache confusion:
http://softsolder.com/2011/01/06/thing-o-matic-extruder-controller-power-supply-improvement/
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
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 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, 2012-03-14 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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
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 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 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 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 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, 2011-04-02 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 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 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, 2011-02-18 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 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 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
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