I rather hate to think of the cost ... beautiful stuff ... German made.
It is easy to make a probe; good software to extract the real value of
the probe, not so easy.
Dave
On 3/12/21 9:14 AM, Ralph Stirling wrote:
This would be an awesome setup for Linuxcnc.
Hi all,
I'm trying to get an Rpi4b -> 7i90 going.
Ralph Stirling made an interface board for the pi that allows one to
flash the spi.
The following is copy of the procedure:
On Rpi:
$ git clone git://git.code.sf.net/p/openocd/code openocd
$ cd openocd
$ ./bootstrap
$ ./configure
The few times I've had different counts re' direction it has been a
broken flex coupling to the encoder.
Of course it could be that you are simply running out of frequency
response. Not likely but possible.
Dave
On 3/7/21 12:54 PM, Gene Heskett wrote:
On Sunday 07 March 2021 14:07:33 Feral
https://www.toolots.com/quality-ezcad-jpt-30w-fiber-laser-engraver-marking-machine-for-metal.html?cid=10310162125=EAIaIQobChMIkY-kjNaU7wIVEz2tBh35iAhYEAQYBCABEgJiv_D_BwE
Others seem to use more power; like 80 to 100 w but not necessarily FO.
Dave
On 3/3/21 9:34 AM, Curtis Dutton wrote:
I have
Hi,
I've downloaded the 7i90.zip and unpacked to get the .bit files. Is
there a short tutorial or plain list that interprets the file names and
gives me encoders, pwm, etc.
As always TIA
Dave
___
Emc-users mailing list
Hi all,
I finally decided I needed to bite the bullet and see if I could get my
Rpi4B-7i90 combo to work.
So: mesaflash --device 7i90 -spi --addr /dev/spidev0.0 --write
/bitfiles/7i90_spi_svst8_8im2.bit
unable to set bpw32, fallback to bpw8
unexpected cookie at 0100..0110:
On 2/22/21 8:56 AM, Jon Elson wrote:
On 02/22/2021 09:55 AM, andy pugh wrote:
On Sun, 21 Feb 2021 at 18:17, nkp216 wrote:
How to calculate the accuracy of the resolver?
In terms of linearity or in terms of resolution?
Resolution is hard to quantify, as they are analogue devices, so the
On 2/22/21 7:55 AM, andy pugh wrote:
On Sun, 21 Feb 2021 at 18:17, nkp216 wrote:
How to calculate the accuracy of the resolver?
In terms of linearity or in terms of resolution?
Resolution is hard to quantify, as they are analogue devices, so the
accuracy is dependent on the measurement
On 2/21/21 10:15 AM, nkp216 wrote:
How to calculate the accuracy of the resolver?
1.Does this calculation make sense?
https://forum.linuxcnc.org/27-driver-boards/39629-1988-fadal-4020-conversion-thoughts-mesa-6i24-7i49?start=10#176312
2. And if the gear ratio is made 1:5 ?
On 2/21/21
hydraulics anyone?
Dave
On 2/4/21 12:57 AM, andy pugh wrote:
On Thu, 4 Feb 2021 at 08:31, John Dammeyer wrote:
I watched a few of the Fellows gear shaper videos. Gave me an idea. I have an
AC servo on the knee. I've thought about adding motion to the quill but I do
like the option for
If you have nothing else to do download the demo for SynergyCAD.
Parasoiid based. 2-D, 2.5D, wireframe, solids. lathe, edm.
For the lathe you draw in X,Y and it transforms it to Z, X when you CAM.
I started from scratch and it took me a long time to get comfortable
with it. Exports are dxf, dwg
EDM of one sort or another comes up every few years. Pete
Grundemann(sp?) put one together. His demo was to edm threads in a file.
tomp ... now in Thailand has a lot of experience in edm.
tjtr33...atgmailcom
Someone brought a non-working commercial wire edm to Galesburg and
almost had
Worst case you find a scrap automotive spring. It is probably something
like 5160. Torch cut a piece. Anneal, forge, mill, grind, etc to desired
shape. Heat until it is not magnetic, quench in oil. Temper back to
about Rc 50. Test. The first try may not be good. Adjust as necessary in
Boston Dynamics has a good utube staring Spot and Adam Savage of Myth
Busters.
On 12/30/20 11:22 AM, Chris Albertson wrote:
Altas is hydraulic. It has 28 hydraulic actuators and one battery-powered
pump. The battery is 3.7 KWH size They say it runs for about an hour.
So he is burning
On 12/11/20 1:03 AM, andy pugh wrote:
https://hackaday.com/2020/12/10/a-xilinx-zynq-linux-fpga-board-for-under-20-the-windfall-of-decommissioned-crypto-mining/
So an ARM core and an FPGA on one board?
I wonder if one could put LinuxCNC on the ARM and Hostmot2 on the FPGA?
Is the FPGA big
On 12/9/20 8:21 AM, Jon Elson wrote:
On 12/08/2020 10:53 PM, Gene Heskett wrote:
What does that 22mv mean in folllowing error since I have that set
for about half an inch at the moment?
It is not milli VOLTS, it is milli-units. Generally inches or mm,
depending on your preference.
so 22m
On 11/28/20 10:36 AM, Karl Schmidt wrote:
I would second this recommendation.. If you want to get into
Electronic design you should read any/everything by Pease, Jim
Williams, and Bob Widlar ..
The other must have books are:
Analog Circuit Design, First Edition : Art, Science and
On 11/27/20 10:52 AM, andy pugh wrote:
On Fri, 27 Nov 2020 at 18:45, John Figie wrote:
I think I am going to attempt to figure out what the parameters of my motor
are and make a model to simulate my control loop. For hobby stuff I think
LTspice may be good to model and simulate.
I am not
On 11/19/20 1:24 PM, Ed wrote:
On 11/19/20 1:35 PM, Chris Albertson wrote:
Insolation? Man, I could use some of that right now. The fall
temperatures are downright freezing. It was down in the mid 60's this
morning. If this continues I will have to figure out if it is
possible to
On 11/19/20 6:18 AM, Les Newell wrote:
that workshops only come in one size, "too small". :-)
I had that problem at my last place. When I moved the priority was a
huge barn. The house was just an afterthought :-)
Les
Right on! You build your shop first and bring your primary power into
On 11/18/20 11:45 AM, Gregg Eshelman via Emc-users wrote:
Redline Water Wetter or Royal Purple Ice might lower the temps. They're
intended for use with plain water in race vehicles so that when there's a
coolant leak they don't make the track or drag strip slick.
Their effectiveness is
Thanks Jon. Appreciate the help.
Dave
On 11/15/20 3:29 PM, Jon Elson wrote:
On 11/15/2020 04:48 PM, dave engvall wrote:
HI,
With *B*lack Friday on/coming I need a recommendation for a
motherboard that has good latency and a rock solid EPP port. Servo
application so that should relieve some
Gene,
Isn't it nice when things 'just work'.
I presume you are familiar with pressure gage calibrators. That is a
hydraulic cylinder of known area loaded by a known weight. At the low
volume of coolant you need that might be a simplistic way to supply a
known and constant pressure. It should
HI,
With *B*lack Friday on/coming I need a recommendation for a motherboard
that has good latency and a rock solid EPP port. Servo application so
that should relieve some of the constraints. It needs to work with Jon's
upwm and Peter's 7i34. Naturally it also needs to be currently
available.
For all the time spent chasing cable problems it might be nice to have a
chip on a board that would echo signals and generate error messages.
Without good diagnostics one is like the puppy chasing his tail.
Dave
On 11/13/20 3:32 PM, Gene Heskett wrote:
On Friday 13 November 2020 14:59:41
IIRC RV grade antifreeze is propylene glycol and often flavored with a
bit of methyl salicylate. Easy to tell if you have it all flushed out.
You will be able to taste the oil of wintergreen long after the pink dye
is gone.
Dave
On 11/7/20 6:46 PM, Gene Heskett wrote:
On Saturday 07
Middle of afternoon and I still need coffee. ;-) Let's try 7i43. Tnx.
On 11/1/20 12:16 PM, Eric Keller wrote:
7i37 is a daughter card and can't be flashed.
On Sun, Nov 1, 2020 at 3:03 PM dave engvall wrote:
On 11/1/20 8:18 AM, andy pugh wrote:
On Sun, 1 Nov 2020 at 16:02, dave engvall
On 11/1/20 8:18 AM, andy pugh wrote:
On Sun, 1 Nov 2020 at 16:02, dave engvall wrote:
I have a application for a 7i37/ 7i33. In face a couple of them.
First try has been a D525 with a SIIG single pport.
Do you really mean 7i37? Or maybe 7i43?
First off I have no idea if the SIIG board
Hi,
I have a application for a 7i37/ 7i33. In face a couple of them.
First try has been a D525 with a SIIG single pport.
First off I have no idea if the SIIG board works and indeed no idea of
how to test it.
With Jon's ppmc there was a comm program that told one right away if the
link was
Hi Nicklas,
A bit off the wall but maybe bend unhardened then flame harden with a
closely following spray quench followed by temper.
Speed in bending may have an effect on spring back.
This, of course, is much easier to talk about than it is to do. :-)
Dave
On 10/11/20 9:07 AM, Nicklas SB
I just checked the forum and it is alive and well. Something is screwed
up with the list.
Dave
On 9/24/20 11:05 PM, John Dammeyer wrote:
For me the list has been quiet but checking the forum web page there have been
messages up to 23SEP2020. Not sure why I'm suddenly not receiving messages
and
calculates the best speed and path for the machine
regards
Andrew
regards
On Tue, Sep 22, 2020 at 11:35 AM dave engvall wrote:
HI Andrew,
Just because I have ideas does not imply I can implement them. ;-)
However, I believe there is a velocity pin that might be used to slow
down in corners
HI Andrew,
Just because I have ideas does not imply I can implement them. ;-)
However, I believe there is a velocity pin that might be used to slow
down in corners. Since the spindle loads up going thru corners it may be
possible to monitor spindle load and back off velocity thru the corner
Chris,
You might try Synergy, does the whole ball of wax. Not too expensive.
Takes time to learn. Parasolids based. 2D, 2.5D, 3D, wireframe, solids,
turning and probably something i missed. Unusual feature is extrusion
screws.
Runs on linux; will run on Windows but you lose a few features.
Has anyone scrolled down the iink to check the reducers?
I'm not a stepper person but they might make a good start at a 4th axis. :-)
Dave
On 9/11/20 11:51 PM, andrew beck wrote:
Leonardo. I'll pm you my supplier I use us cheaper and I have been testing
there quality for 2 years on several
IIRC some controls have a switch to do this. Also I think you can flip
the sign of one axis and get a mirror image but the sense of the cut
(climb/conventional) also flips so unless your machine is pretty tight
dimensions may also shift. I've always done this the hard way by going
back to the
A most impressive list of worker bees. However, the english analogy
fails when referring to Andy. I just can't refer to him as Queen bee or
Drone. There must be a better word to describe herding programmers. ;-)
Great work everyone. Will upgrade as soon as I can get the rpi sorted.
Dave
On
On 8/20/20 5:00 PM, Gregg Eshelman via Emc-users wrote:
What blows some people's minds is that the sum of two odd numbers is always an
even number, the sum of two even numbers is also always an even number. The
only way to get an odd number from adding any two numbers is one number must be
Ah, John,
In the words of way too many math professors, "It is obvious that ." .
On 8/19/20 7:12 PM, John Dammeyer wrote:
My computer science degree required 4 terms of calculus, 2 terms of linear
algebra, 2 terms of differential equations, 4 terms of physics and 2 terms of
statistics. I
On 8/10/20 12:45 PM, Jon Elson wrote:
On 08/10/2020 01:34 PM, mar...@r-bechtold.de wrote:
I switched to an ethernet based mesa karte
it is nearly impossible to finde a PCI or PCIe parport card that
support Real EPP
The 8875 is REALLY old. But, there are good PCI and PCIe cards that
do
Hi,
Fussing with a pci pport card; 8875F based connected to a 7i43.
With 50 pin connectors to the left led's are Y R R
I don't seem to get better at this as I age. :-(
Any help will be greatly appreciated!
Thanks in advance.
Dave
LINUXCNC - 2.7.15
Machine configuration directory is
Hi,
TinyG is supposed to have S curve accel and limited jerk. It might be
worth looking at for approach. Should be easy since it is pretty much
linuxcnc but embedded.
Just a comment following up on an earlier post; maybe a week ago or so.
Just poking the bear. :-)
Dave
On 7/23/20 7:53 AM, Bari wrote:
It's really not a big deal. Engineering and science is full of math
operations that you have to jump to all the time. If it is too
difficult find someone else that is not a complainer to help you.
On 7/23/20 12:34 AM, Chris Albertson wrote:
Why on Earth do
A couple of sources:
http://www.mesanet.com/pdf/motion/softdmc.pdf 50 us cycle -:)
Some years ago a masters candidate in ME at UBC did her thesis on motion
control with jerk limiting and sine wave accel. I used to have a copy of
it but cannot find it.
IIRC is would be post 2005 and
Measure from an arbitrary center to perimeter and calculate from three
points. Adjust and remeasure.
On 7/1/20 9:08 AM, Gene Heskett wrote:
Greetings all;
I had to drill a pin hole and drive this backplate with a dead blow
hammer to get it locked to this BS-1 well enough to machine a register
On 6/10/20 12:47 PM, Gene Heskett wrote:
Gene,
Take care and be careful. Can't say much more as you probably won't
listen anyway. ;-)
Be glad you live in a time when cardiac care is pretty well understood.
Else you'd be
long gone.
Dave
On Wednesday 10 June 2020 15:17:19 Chris Albertson
Round inserts are nice if you have the power and stiffness to use them.
Only in desperation would I use a fly cutter simple because of the
unbalanced load.
Because of their radius the round inserts will give a nice finish.
Have fun.
Dave
On 5/20/20 9:56 PM, John Dammeyer wrote:
I've been
Years ago I would have said Lubriplate but today there are lots of Li
greases and lubricants in general have improved a lot.
Any NLGIG 2 should do. At the speeds it is going to turn you should not
have to worry about over packing the lube.
Have fun getting it in place. I use a 3/4 T lever hoist
HI all,
My ancient Acu-rite III DRO has gone flaky. I ordered one off the
following link.
HI Gene,
Being always caught outside the box but still having to think I made a
large t-nut that goes in the cross-slide, then a block of steel large
enough to accommodate a couple of 1/2" gr 8 cap screws and a hole
centered between the bolts but obviously at 90 degrees with the proper
taper
On 5/3/20 4:32 AM, Nicklas Karlsson wrote:
On Sat, 2 May 2020 at 16:29, N wrote:
Did not check check then moving but expect a lot less accuracy then at move,
Bear in mind that when the tool position matters the tool is often
stationary in the important direction.
Then it will be more than
Not that I know much about this but: It is my understanding that the
rotary because it has less quantatization error does a better job on
control but unless your machine is very tight a poorer job on position.
Early on I tried my machine with a 5 um linear glass scale. It was very
difficult to
be met? I guess plan the hole in
the CNC part drawing?
-Original Message-
From: dave engvall [mailto:dengv...@charter.net]
Sent: April-14-20 11:37 AM
To: emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] Non-circular boring. Linuxcnc style.
I've never had much luck with plunging
IIRC a full dia plunge with a non-center cutting end mill is an
experiment in friction welding. ;-)
Dave
On 4/14/20 11:31 AM, andy pugh wrote:
On Tue, 14 Apr 2020 at 19:26, John Dammeyer wrote:
And I don't think one should plunge into HRS with a 4 flute mill.
Was it a centre-cutting mill?
I've never had much luck with plunging end mills full dia. Probably
works better with HSS , not so brittle. However, I plunge cut at 40%
overlap and 15 - 18 ipm at 2200 with .25 carbide. Get fair life doing
that. On the same rather flexible mill using a 1/2" rougher I'm good for
.1" radial
On 4/10/20 1:01 PM, Peter C. Wallace wrote:
On Fri, 10 Apr 2020, Leonardo Marsaglia wrote:
Date: Fri, 10 Apr 2020 16:50:15 -0300
From: Leonardo Marsaglia
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] Home use index
Hi all,
I'm working (slowly) on a Rspi4b to 7i90 to 5i33 system. After a few
speed bumps ( I ordered the wrong connector) I think I have things
worked out. The geometry isn't pretty but should work unless my
cognition has drifted off into never-neverland.
So 40 pin idc plugs into spi
You can say what you want about Spam. Once a year is about the right
dose for me. However in the late 50 when I was spending summers on a
fire lookout Spam was an easy meal. Bearing in mind that by the time you
go up all the snow has melted and that was the only refrigeration.
During and
Implications?
Gleaned from a medical site.
"Coronavirus is enveloped, meaning the virus has coating on the outside
of it. As it happens, the envelope means that the virus doesn’t survive
well outside of the body—they usually can’t last longer than 24 hours
outside of the body and usually
just checked the price on ebay. ouch! glad I don't do anything that
really need one.
On the other hand that $800 only buys about 1.5 glass scales.
Dave
On 3/22/20 3:20 PM, andy pugh wrote:
On Sun, 22 Mar 2020 at 22:01, Gene Heskett wrote:
That is an impressive widget. :-)
So was the
That is an impressive widget. :-)
On 3/22/20 12:08 PM, andy pugh wrote:
On Sun, 22 Mar 2020 at 18:27, dave engvall wrote:
I bought one of these a few years ago when they were somewhat less
expensive. The polarizer helps the beam considerably. I think one can
get something on the order
https://www.amazon.com/Laser-Center-Edge-Finder-polarizer/dp/B00WVG4DF4
I bought one of these a few years ago when they were somewhat less
expensive. The polarizer helps the beam considerably. I think one can
get something on the order of 0.01" repeatability using your eye. A
sensor and a pin
Hi,
Or maybe it is web search dumb. Usually I do better but:
I have the osh park board for Rpi4b to 7i90 ordered. However I think I
can plug a 40 pin (2 x 20) idc directly into the pi and come off the
other side of the board with a 26 pin (2x13) directly into the 7i90. No
cable to fool with.
It is unusual for epoxy not to stick. Pocket eh? Take a Q-tip with
either lye or muriatic acid and etch. Then wash with water, then
degrease with iso-propanol, trichoroethylene, perchlor (dry cleaning
solvent), etc. This assumes the pocket is aluminum which is amphoteric.
... reactive with
hi Nicklas:
I think you keep the X as linear and do a Cartesian to polar conversion
for the Y. This is sometimes done to get a really stiff Y axis. Years
ago I saw a utube of a shop doing one with a decently large rotary
table; as in 18" or more.
Dave
On 2/22/20 12:50 AM, Nicklas Karlsson
, finishes for wood, etc.
Dave
On 2/19/20 11:59 AM, Gene Heskett wrote:
On Wednesday 19 February 2020 14:29:42 dave engvall wrote:
Lots of illocut products on web... which one do you recommend?
Indeed kerosene works well for threading Al and cutting. Probably less
flammable also but being
Lots of illocut products on web... which one do you recommend?
Indeed kerosene works well for threading Al and cutting. Probably less
flammable also but being lazy I didn't check the flashpoints.
Dave
On 2/19/20 11:05 AM, Marshland Engineering wrote:
Ilocut is far superior to WD40. If I
postscript isn't a bad language for 2D. ... and yes years ago I did
exactly that.
Dave
On 2/19/20 7:52 AM, andy pugh wrote:
On Sat, 15 Feb 2020, 19:41 N, wrote:
Printers talk postscript while CNC machines talk g-code, well not always
but quite often.
And just as some folk hand-write
Indeed WD-40 seems to work well for Al. I have some Al that is plain
touchy. Creates heat very quickly and then I get adhesion. 6061-T6 seems
to be OK.
Dave
On 2/19/20 4:32 AM, Stuart Stevenson wrote:
For aluminum I like WD-40.
On Wed, Feb 19, 2020 at 3:41 AM Marshland Engineering <
On 2/19/20 4:16 AM, Les Newell wrote:
On 18/02/2020 23:54, Marshland Engineering wrote:
Just a correction, I have setup a few stepper systems with LinuxCNC
and step
and direction is no problem. The problems came in when using 2KW
servo drives
and linear scales on the axis.
The subject of
Hi all,
By hot roll I assume you mean something like A36. Alloy comp not
controlled just mechanical. It tends to be low alloy scrap plus 4140.
Using a TiAlN coated 1/4 carbide I can use 2200 rpm and 11 ipm, doc
0.05, any more and it screams at me. This is basically slotting, on a
side cut
On 2/17/20 5:18 PM, Ed wrote:
On 2/17/20 6:20 PM, John Dammeyer wrote:
From: Sam Sokolik [mailto:samco...@gmail.com]
Because your examples are not running a full operating system...
I don't buy that. That's like saying. Look. The ride is a tad
uncomfortable but that's to be expected.
Hi all,
A quick look at web sources seems to indicate that the EPP on some
motherboards simply doesn't work.
In my case I'm having problems with a 7i43 -5i33.
Has anyone gotten the 7i43/5i33 to work with a D525 intel board? If so
would you please share the magic incantations necessary.
A
partial reply to Gene's comments.
https://www.analog.com/media/en/reference-design-documentation/reference-designs/CN0276.pdf
On 2/14/20 6:20 PM, Gene Heskett wrote:
On Friday 14 February 2020 16:30:51 Andy Pugh wrote:
On 14 Feb 2020, at 20:55, Gene Heskett wrote:
The coils are usually
John, et al:
The good thing about linuxcnc is that is can accommodate a wide range of
user skill; from those who just want to make chips to those that want
to dig into the internals, to those that can actually write internals.
Ditto on the range of machines. Linuxcnc nee emc was tested on
a bit overdone for your app but this should give you an idea. page down
to fig 16.
https://www.st.com/content/ccc/resource/technical/document/application_note/group0/6a/82/83/37/61/69/4e/74/DM00497286/files/DM00497286.pdf/jcr:content/translations/en.DM00497286.pdf
Dave
On 2/13/20 11:01 PM,
I happen to use some of the quick setting JBweld today. I misspoke,
it is not clear, grayish and black for the two parts. It may be just
carbon black but who knows.
Almost every hardware store has Devcon products, slow setting and fast.
At least some are clear. Sorry for the confusion. IIRC
Check the max frequency on any encoder you look at. The inexpensive ones
max out at 200 K. Frequency is not a problem is you want to throw $$ at
it. It is very hard to win; lots of counts at the high end but not many
when you are creeping. There just ain't no free lunch.
Dave
On 2/11/20
http://pico-systems.com/osc2.5/catalog/product_info.php?products_id=31=2n4hbnn63oqt9ncdlervb08tv6
On 2/12/20 1:52 AM, Gene Heskett wrote:
On Wednesday 12 February 2020 01:49:34 andrew beck wrote:
the option I just thought of while googling is, can I convert the sin
cos format in to a normal
I like the idea of iso-propanol. The only thing that would improve the
process is vapor degreasing. The trick of a non-filled epoxy as a primer
is good. Why didn't I think of that. ;-)
The Navy uses acetone for degreasing before using loc-tite on their
nuclear stuff. Degrease, blow dry, add
If " 'nix" were suddenly removed from the world the internet and a whole
bunch of other thing would disappear.
Just to rock the boat: mesa (PCW) has a very nice motion controller for
an FPGA. 50 us cycle time, etc. "ALL" someone has to do is wrap interp
and all the other non-motion stuff
AFIK Araldite is a non-filled epoxy. I've always taken that as the Brit
name for plain epoxy. OTOH JB also make a clear 5 min expoy as do
others. I grew up with a quart of (Shell at the tme) Epon828 in the
cupboard. Handy stuff. I once mixed an epoxy using tri-mellitc (sp??)
anhydride as a
Yep! As long as your environment doesn't have chlorinated solvents you
are OK. Even my Ace Hdwe carries it.
Dave
On 2/11/20 10:34 AM, Chris Albertson wrote:
"JB Weld" Epoxy. It is a mixture of two part epoxy and steel powder. Get
it at any auto parts store or Home Depot.
On Tue, Feb 11,
Hi all,
I've been following Gene's adventures with the Rpi4B. Gene uses steppers
and I use servos so I can't just clone his setup.
I need suggestions for a 4 channel analog system; encoders and +- 10 v
for servos; no i/o as I handle everything else external to linuxcnc.
Ideally the system
Been so long I don't remember. I was done on the Mazak so it has been a
few years. I probably wrote something rather simple. Maybe even so
simplistic and manual. ;-)
Dave
On 2/4/20 9:31 AM, andy pugh wrote:
On Tue, 4 Feb 2020 at 16:22, dave engvall wrote:
I've done it the hard way
emc was short and nice. Linuxcnc is certainly more descriptive.
Dave
On 2/4/20 7:17 AM, Stuart Stevenson wrote:
EMC was purchased in 2016 by Dell. They no longer use the EMC(squared) logo
as of 2016.
All of the legal effort about the logo was probably done to help in the
effort to sell the
I think it comes down to constructing lines perp to the profile at
probed points. CMM's obviously take care of this somehow.
I've done it the hard way by drawing circles the diameter of the probe
and then doing three pt arcs to fit. Certainly there are better and
considerably more elegant
, such was the
massive quantity of counterfeits made with the bad electrolyte formula. Apple
seemed to have been especially hard hit.
On Friday, January 31, 2020, 8:54:51 PM MST, dave engvall
wrote:
Certainly an idea to check out. Never occurred to me but the I suppose
Intel could be victim
capacitors? Usually the pressure relief
cuts on top of the cans split open.
On Friday, January 31, 2020, 12:51:07 PM MST, dave engvall
wrote:
Hi all,
A couple of days ago my 525 motherboard crashed. Really crashed! It has
been flaky for months but never any clue as to the problem
Hi all,
A couple of days ago my 525 motherboard crashed. Really crashed! It has
been flaky for months but never any clue as to the problem. This time it
refused to boot so I grabbed a new disc and installed stretch ... iso.
Looks pretty, comes up nicely.
However invoking linuxcnc only
Linuxcnc get used because it works ... at least well enough to get most
jobs done.
I hope Gene gets something workable out of the Rpi4; that looks promising.
My vision of a new system is something very modular. Small boards
running a microcontroller with some chance of the chip not
Hi all;
For once I'm writing to say thanks to the developers for making the
homing sequence quite flexible. .
As I get older I tend to use the KISS principle more and more. I'm
chasing Gene down the path: just 3 years younger and still kicking.
Specifically, I use a cheap laser diode and
https://www.renco.com/_Resources/Persistent/8785438f7d83f3d7cb02798c4ec2078feb8bd2a1/1146790-21_Drehgeber_RENCO_en.pdf
Don't know why reply to list didn't copy more of the original but
hopefully this will help.
Dave
On 12/7/19 10:37 AM, Greg Bentzinger via Emc-users wrote:
Renco 77678-319
I've been asking about this for years and have been met with resounding
silence. I rather like the idea of doing it remotely. Not that most
cpu's can't handle it but tends to get one thinking shopwise rather then
just a single machine.
Thanks for poking the bear. ;-)
I have no idea what
My guess is that cut, squeeze, silver solder, form to round again on the
tapered arbor. I lost so much weight after I got married that I had to
have my ring resized. Didn't cost too much, even for a starving student.
On 11/18/19 2:42 AM, andy pugh wrote:
On Mon, 18 Nov 2019 at 03:52, Gene
It is not too unusual to use the torsion in a rotating shaft as a load
indicator. Sensors at both ends aligned at zero force. The app I saw was
using this on the turbine shaft for a 125 Mw generator. Just a comment. ;-)
On 9/18/19 5:30 PM, Chris Albertson wrote:
One way to measure force is
MAX11905 might do the job. 20 bit. but spendy. probably $50 in singles.
QSPI and SPI for interfaces. data rate 1600 ksps. SAR > 16 bit gets
really touchy... CMRR, noise, etc. Good luck.
On 9/18/19 7:01 AM, Curtis Dutton wrote:
Right now my test set up is going to consist of a 6i25, 7i85 and
Hi all,
Does anyone have a current phone number or email for Jeffrey Pfeifer.
I tried an old hotmail account but have not gotten an answer.
TIA
Dave
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Jon,
You are making me feel old; just a fact of life. :-) IIRC I had the
first PPMC board set out the door. Once one got the connector tied down
that beastie was rock solid. The communication diagnostic was a life
saver. Easy way to confirm that the communication was working and it
Does anyone have experience with one of these. They used to have a good
spec sheet and a price but that seems to have gone away.
I used to be more adventuresome but seem to have lost my ability to
squeal like a guinea pig. ;-) I'm hoping someone has tried one of these.
Dave
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