On 08/24/2017 09:26 AM, Nicklas Karlsson wrote:
I also have Yaskawa drives and motors but planned to replace drive. Encoder is
three quadrature signal which is a little bit odd, third usually is zero. I
have no time read are comment anything for a day or two.
I think the scheme (I had some of
On 08/10/2017 03:33 PM, Les Newell wrote:
Also, common mode chokes on the DC INPUT to the 7i29
might be of help.
The 7i29 doesn't have any big reservoir capacitors on
board. I was always taught that H bridges need a nice low
impedance supply. Adding inductance doesn't strike me as
being
On 08/10/2017 11:09 AM, Les Newell wrote:
I have been chasing a noise problem on my lathe for some
time now. I am using a 7i29 2kw drive and am getting a lot
of noise on the encoders, even with filtering enabled at a
pretty low frequency. I have tried just about everything I
can think of. I ma
On 08/09/2017 04:31 PM, Dan Bloomquist wrote:
jeremy youngs wrote:
My ignorance may land my foot in my mouth , but if it has
absolute glass scales and they are being read why is
there a need to home?
Hi Jeremy,
The glass is relative, not absolute. Yea, it would be a
whole different world wi
On 08/09/2017 04:16 PM, jeremy youngs wrote:
My ignorance may land my foot in my mouth , but if it has absolute glass
scales and they are being read why is there a need to home?
Homing gives you at least two advantages. One is that after
homing, the machine limits of travel can be checked aga
On 08/09/2017 12:53 PM, Dan Bloomquist wrote:
Ok, so maybe I'm over thinking this. So I should just
mount switches in the centers, make sure I'm jogged close
to a known side on start up, and just home on them.
Yup, that's how it is set up on my Bridgeport. The X trip
bar is in the center, and
On 08/09/2017 10:38 AM, Dan Bloomquist wrote:
I know how accurate this thing is. The idea is that I can
start up without hunting switches.
Why is that such a big deal? LinuxCNC now can do all axes
with the press of ONE button!
I really don't see the need for exotic and possibly finicky
senso
On 08/08/2017 08:42 PM, Dan Bloomquist wrote:
I have not set homing up on my mill yet, I've been mulling
it over. A switch is not satisfying unless there is a way
to keep from hunting for it, can't imagine...
If you have encoders with index, that can set the home
position to an exact encoder
On 08/03/2017 09:52 AM, Gene Heskett wrote:
On Thursday 03 August 2017 06:54:02 andy pugh wrote:
You probably want CBN (or conventional abrasive) for HSS. Diamond is
Carbon. Carbon dissolves in steel.
At room temps?
The local temperature where the diamond hits the metal is likely NOT to
be
On 08/01/2017 12:41 PM, Kirk Wallace wrote:
I rescued (loosely applied term) this compressor as it was being
loaded on a neighbor's truck on its way to the dump:
http://www.wallacecompany.com/machine_shop/Sears_Compressor2/
It seems to be in decent shape except the cylinder bores. The plan is
On 07/22/2017 11:01 AM, Gene Heskett wrote:
It may have been, were I will to learn a new program.
New program? Machinekit IS LinuxCNC, at least as far as the
g-code end of things is.
HAL is the same, Linux is the same. There are significant
differences in rtapi, but few venture into there.
I
On 07/22/2017 03:26 AM, Frederic RIBLE wrote:
On 22/07/2017 03:58, Nicklas Karlsson wrote:
With 0MQ protocol ?
Yes, that is BeagleBone Black and ZeroMQ.
I agree, 7" screen is too small.
Have you checked out Touchy? It actually is quite usable on
a 7" touch screen. You do have to have a run a
On 07/20/2017 07:19 AM, Les Newell wrote:
From what I research I have done the Raspberry is more
than a little problematic. The Beagle Bone seems to be the
board of choice for Machinekit. I looked into this and
came to the conclusion it is too much work for no real
gain. You can get small Inte
On 07/20/2017 07:14 AM, Nicklas Karlsson wrote:
On Thu, 20 Jul 2017 12:53:15 +0100
Les Newell wrote:
I tried Machinekit fairly recently and managed to run GUI and control on
separate simulated machines but it was a little flaky.
0MQ is pretty new, NML have been there for a long while.
My un
On 07/19/2017 08:08 PM, Nicklas Karlsson wrote:
On 07/20/2017 09:35 AM, andy pugh wrote:
On 19 July 2017 at 19:34, Nicklas Karlsson wrote:
I have read thru the documentation and do not find it.
I don't know if they have documentation. That's why you were told to
talk to them or look at their
On 07/19/2017 04:35 PM, andy pugh wrote:
On 19 July 2017 at 19:34, Nicklas Karlsson wrote:
I have read thru the documentation and do not find it.
I don't know if they have documentation. That's why you were told to
talk to them or look at their code. I think that they were planning to
replace
On 07/19/2017 01:34 PM, Nicklas Karlsson wrote:
HAL spans the divide and lets realtime and non-realtime components talk
to each other easily.
HAL is currently not network-transparent, so components on one computer
can't make HAL net connections to components on a different computer.
This may or
On 07/19/2017 10:47 AM, Nicklas Karlsson wrote:
...
HAL spans the divide and lets realtime and non-realtime components talk
to each other easily.
HAL is currently not network-transparent, so components on one computer
can't make HAL net connections to components on a different computer.
This may
On 07/15/2017 10:57 AM, Gene Heskett wrote:
The .png cannot be zoomed to inspect details, but for 2 days work, looks
better than I expected. And thats encouraging.
Are you intending to be able to translate an existing, working config
into this, and to be able to take this back to working .ini +
On 07/15/2017 10:47 AM, Todd Zuercher wrote:
Not that I understand exactly what you're doing, but it does look very
interesting. If you are interested I am sure we could contribute some rather
complicated configuration examples for you to play around with for testing. (I
know Gene has some d
On 07/08/2017 03:19 AM, Javier Ros wrote:
Hi,
There was a thread looking for rare applications of linux cnc
Here's a screen printer in Brazil that uses our Universal
Stepper Controller and EMC2
https://www.youtube.com/watch?v=0RH_H7jgQQY
I gather they are doing architectural panels with it
On 07/04/2017 05:22 PM, sam sokolik wrote:
Well - I have been playing with debian stretch and
4.9.0-3-rt kernel. I booted our matsuura (j1900 quad
core) which with no tweeking has aprox 100us latency. (it
has been running mesa ethernet cards with rt_preempt - no
issues) Next I booted it
On 07/03/2017 03:38 PM, tom-...@bgp.nu wrote:
My new-old Intel DN2800MT motherboard is a bit sluggish on my Emco. I helped
it a bit by disabling Hyperthreading in the bios and setting ISOLCPUS=1 in
Grub. But I have a vague recollection of needing to do something related to
the graphics drive
On 07/03/2017 03:02 PM, Les Newell wrote:
Aw hell, I've done it again. My fault. I didn't realize
there were two sets of limits. My config was automatically
converted to the new format and I didn't notice limits
appear in two places now. When I changed my limits I ended
up only changing the jo
On 06/30/2017 11:45 AM, Peter C. Wallace wrote:
This does show that a relatively small quadrature error
causes a large velocity modulation is the relative time
between edge changes so much
Good encoders have very close to 50% duty cycle on the
individual A and B outputs, at least when new.
On 06/29/2017 10:43 PM, dave wrote:
On 06/25/2017 12:32 PM, Jon Elson wrote:
On 06/25/2017 09:21 AM, dave wrote:
.warning: gcode exceeds machine limits. I
classically set my limits at -.2 ..18, -.2, ..9 and 0
... -3.
Moving to -9 ... 9, -4 ... 4 for x and y and it still
gave me
On 06/29/2017 06:31 PM, Tom Easterday wrote:
Should the backlash parameter in the .ini file be positive or have the sign of
the input_scale (aka encoder scale)? I don't see anything in the docs
regarding this but did find a brief forum post that suggested it should have
the same sign. I have
On 06/29/2017 06:23 PM, andy pugh wrote:
On 29 June 2017 at 23:38, Ben Potter wrote:
A few others who sell them in the uk include:
shop-apt.co.uk (I tend to use for el-cheapo cutters)
cutwel.co.uk (use for my better cutters at home)
wnt.com (I use at work)
Thanks.
And, unless cutting somet
On 06/29/2017 03:59 PM, Les Newell wrote:
Do you have and raw-write encoder filter tweaking stuff
in the hal file:
No. For testing purposes I am running the barest minimum
needed to achieve motion using a config generated by pncconf.
After spending a lot of time playing with halscope I hav
On 06/29/2017 10:20 AM, Les Newell wrote:
Well, some progress figuring out what is going on.
I just ran some more tests using Ubuntu 16.04 with a
freshly built preempt-rt kernel and freshly built Git
master. No surprise, it still shows the fault. I took a
Halscope log from the original setup.
Just wanted to let everybody know about this deal:
Part # 33615 HD
http://www.mpja.com/06-29-17.asp?r=129492&s=16
The on line store shows $2.95, you might have to use
discount code "email SA".
Jon
--
Check out th
On 06/28/2017 03:50 AM, Les Newell wrote:
OK, Tried the usual reseating components etc and that PC
does not want to play. I found a Dell SFF PC in the junk
pile. After hacking it to take a full size PCI card I
fired it up. Running my old Debian + LinuxCNC 2.6.0 it
runs smooth. Latency jitter i
On 06/27/2017 03:06 PM, Les Newell wrote:
Hmm, looks like that was a red herring. The problem is
back. I can't do any more testing because the pixies
inside the old computer finally abandoned ship and it now
no longer boots. Doesn't even post. My priority now is
going to be to find a box that
On 06/27/2017 10:31 AM, Les Newell wrote:
Same PC, same hardware, same settings. The only difference
between the two setups is the hard drive. Changing the PC
(AMD processor VS Intel on the original) had no effect on
the symptoms. I checked latency on the new PC and if I
remember correctly wor
On 06/27/2017 09:01 AM, Les Newell wrote:
I have been running my lathe using EMC for many years and
decided to upgrade to the latest LinuxCNC. The computer I
am using is showing it's age and the ancient version of
Debian I have been running won't even boot properly on my
new computer.
The la
On 06/25/2017 06:51 PM, andy pugh wrote:
On 25 June 2017 at 15:21, dave wrote:
I suspect that this is a thermal problem
Whereas I consider the idea that it is a _Computer_ thermal problem almost
inconceivable.
Yes, for a CPU to foul up ONLY the counting of one axis in
ONE direction seems
On 06/25/2017 09:21 AM, dave wrote:
.warning: gcode exceeds machine limits. I classically
set my limits at -.2 ..18, -.2, ..9 and 0 ... -3.
Moving to -9 ... 9, -4 ... 4 for x and y and it still
gave me the same error message. and yes I shutdown
linuxcnc and restarted homing on the
On 06/25/2017 12:44 PM, dave wrote:
Multiple problems:
Having cooled off the shop a bit the limits violation
seems to have gone away for now. We'll see
what later in the day brings. BTW the limit violations
were consistent between axis and tklinuxcnc.
Multiple passes thru a small routine
On 06/24/2017 06:20 PM, dave wrote:
Thanks Jon,
Tried that earlier in the day and didn't get anything.
Just tried it again and what to my wondering eyes ...
axis. :-)
Still struggling with the interface but it seems to be
giving me the same errors as tk.
I can't quite figure out how I can be
On 06/24/2017 03:52 PM, dave wrote:
ps. In desperation I would try axis (again) but clicking
on the sample configurations doesn't fill in the tree.
'a' and 'b' existed with the Duron also but I've never
been this stalled.
Pick any config that you like, and open the xxx.ini file in
an ed
On 06/21/2017 12:15 PM, Peter C. Wallace wrote:
A step in the FB position from the encoder and an attempt
at an impossible step in the commanded stepgen position...
All the complexities / workrounds of this position step on
index could be avoided if support for encoder counter that
can onl
On 06/20/2017 10:15 AM, Sebastian Kuzminsky wrote:
On 06/20/2017 08:52 AM, Chris Radek wrote:
On Tue, Jun 20, 2017 at 09:27:46AM +0100, andy pugh wrote:
Now, this is perfectly normal, and with a servo / pid
machine the system
knows to ignore the f-error immediately after an encoder
reset. Wh
On 06/20/2017 09:52 AM, Chris Radek wrote:
On Tue, Jun 20, 2017 at 09:27:46AM +0100, andy pugh wrote:
Now, this is perfectly normal, and with a servo / pid machine the system
knows to ignore the f-error immediately after an encoder reset. What is
puzzling me here is why it isn't working in this
On 06/20/2017 09:03 AM, Tom Easterday wrote:
Is there a parameter I can tweak after it happens in order to clear the fault
(e.g. can I clear the ferror value) ? I can then try to home again...
PID error should be recomputed every servo cycle. If PID
error remains at a large value, then it me
On 06/20/2017 08:00 AM, Tom Easterday wrote:
Andy, you are correct it is related to using index. Homing works fine if I
don't use index. The encoder reset makes sense as to why it CAN happen (but
shouldn't be). Is this just a bug? I would try to home a second time but as
Todd says, I can't
On 06/20/2017 07:13 AM, Todd Zuercher wrote:
I wish that were true. For some reason my analog servo machine trips up and
sets a following error on an axis about 25% of the time when trying to home to
index for the first time after turning on LInuxcnc. (Almost every time since it
is a 4 axis
On 06/20/2017 03:27 AM, andy pugh wrote:
On 20 June 2017 at 03:51, wrote:
Why would I get a following error only while homing
I think it is probably because you are using HOME_USE_INDEX (which will
zero the encoder at the index pulse) and feeding the encoder feedback back
into LinuxCNC.
Now
On 06/20/2017 02:50 AM, Erik Christiansen wrote:
Incidentally, I've found that the Postscript printer
language is sorta almost like gcode on steroids. Fighting
with a GUI drawing package gives me chest pains, without
producing useful output, so I've just finished drawing
floorplans, elevations
On 06/19/2017 07:24 PM, jim wrote:
I need my machine to move On a 10 degree line using the x
y axis .
I see g codes for this on other systems .
Can Linuxcnc do this?
Sure.
G01 X0 Y0
G01 X10 Y1.736
If you want to actually program it in degrees, that can be
done. Also, the advanced G-cod
On 06/15/2017 06:10 PM, Ralph Stirling wrote:
I don't believe Robert Ellenberg's PhD thesis was related to
his LinuxCNC motion planner work. His thesis title is:
"A Stability-Estimator to Unify Humanoid Locomotion: Walking,
Stair-Climbing and Ladder-Climbing"
The link to it is:
https://idea.lib
On 06/15/2017 09:15 AM, dave wrote:
Can someone find a video of the guy from Finland (vistuers
???) and his mig welding of pipe T's?
It has been a while and I can't even find an email address.
Viesturs Lacis :
https://www.youtube.com/watch?v=WSQO3IkQ0Lo
Jon
-
On 06/15/2017 09:15 AM, dave wrote:
Can someone find a video of the guy from Finland (vistuers
???) and his mig welding of pipe T's?
It has been a while and I can't even find an email address.
Oh, you should contact Matt Shaver. We worked on an aborted
project to weld pipes in situ. If we ha
On 06/15/2017 02:46 AM, Sven Wesley wrote:
I would love to show a video or photos of the Beagle
setup, do you have any?
I guess I could get some pics of my CRAMPS test fixture with
the Beagle Bone. Not sure that would really interest anybody.
Jon
---
On 06/15/2017 02:46 AM, Sven Wesley wrote:
I would love to show a video or photos of the Beagle
setup, do you have any?
No, but I believe Charles Steinkuehler does have some
videos. He would certainly know.
Can someone please point me the to Robert's trajectory
planner?
His trajectory planne
On 06/14/2017 11:25 AM, Sven Wesley wrote:
RUGBOT!!! :D That is so nerdy I must show it!
And of course Chris' jukebox for the finale. :)
Anyone with a Raspberry or a Beagle? Would be perfect to show the wide
range. Think Raspberry CNC and the Stuart's monster.
I manufacture the CRAMPS board that
On 06/14/2017 04:32 AM, Sven Wesley wrote:
Friends!
I've been asked to do a 25 min catchy speech for approx 100 super skilled
developers on a tech conference. They want to break the standard
What-you-can-do-with-this-cool-framework lectures and show something
completely different.
I'm thinking,
On 06/06/2017 12:36 PM, jeremy youngs wrote:
Isolated, as in opto isolator on the bob ? Thank you
The speed command is an analog voltage, so a simple
optoisolator won't work. There are isolated spindle speed
controllers that use a PWM scheme on an optoisolator and
then convert to voltage on
On 06/06/2017 09:31 AM, jeremy youngs wrote:
Good day folks. Im waiting for ebay to drop this at my door
https://www.google.com/url?sa=t&source=web&rct=j&url=http://spectechind.com/Documents/KB/KBMG-212D-manual.pdf&ved=0ahUKEwjM6aSAtqnUAhUG3IMKHcT_CUgQFggqMAA&usg=AFQjCNGFBaUXQadurcokpyECREPoUQtv-
On 06/05/2017 03:56 PM, Stuart Stevenson wrote:
Gentlemen,
Debian Wheezy
latest linuxcnc release - installed today - but the last release did the
same thing
Axis interface
Kasuga 3 axis mill
when starting (run from here) on line 310 I get the error "length of cutter
compensation entry move is n
On 06/04/2017 09:13 PM, tom-...@bgp.nu wrote:
This is a G76 canned cycle and I usually enter 1 (sometimes 2) spring passes.
The spring pass(es) take no material so this isn’t a deflection problem.
My theoretical thread depth was 0.0255. I ended up needing to set it to
0.0280, but once set i
On 06/04/2017 08:56 PM, Jon Elson wrote:
On 06/04/2017 08:22 PM, tom-...@bgp.nu wrote:
I have to increase the depth a couple thou and re-cut the thread to
cut it deep enough.
Due to machine spring as well as workpiece deflection, a second pass
without even changing the X depth will take
On 06/04/2017 08:22 PM, tom-...@bgp.nu wrote:
I have to increase the depth a couple thou and re-cut the thread to cut it
deep enough.
Due to machine spring as well as workpiece deflection, a second pass
without even changing the X depth will take off some material. So, if
you turn it down,
On 06/04/2017 02:15 PM, Nicklas Karlsson wrote:
Anyone who some experience with central lubrication system?
It is an old machine. There is a bowl filled with grease connected to a row of
pneumatic valves so I guess the grease is supposed to enter this block. There
is also plenty of tubes conn
On 05/26/2017 10:42 AM, Gene Heskett wrote:
On Friday 26 May 2017 09:09:12 theman whosoldtheworld wrote:
So I try to subcribe as CLPA member ok software is open ...
private use is ok ... for businnes tecnology use you pay at minimum
€1000,0 per year ... SO I think is not so interesting for
On 05/24/2017 03:48 PM, Sebastian Kuzminsky wrote:
> I see in the logs that there was a period of high web
> activity, starting about 15:09 EDT and ending just
> recently, at 16:40 EDT. During that time the machine
> exhausted its 1 GB of RAM and went 2 GB into swap, which
> causes very high la
On 05/11/2017 12:28 PM, Todd Zuercher wrote:
> - Original Message -
>> From: "Jon Elson"
>> To: "Enhanced Machine Controller (EMC)"
>> Sent: Thursday, May 11, 2017 12:58:08 PM
>> Subject: Re: [Emc-users] Installing On Older Computer
&g
On 05/10/2017 10:22 PM, Todd Zuercher wrote:
> Latency is fine with Lucid(RTAI). With Wheezy(RTAI) the
> latency test will not even open, it just hangs with
> nothing coming up in the terminal window, but the pc
> itself still keeps going (can open other programs).
OK, there's the problem. Some
On 05/10/2017 04:58 PM, Todd Zuercher wrote:
>
> That is what I am afraid of. But I had not seen any definitive "Yes we've
> killed it" answer on the subject. A quick google seems to imply that Debian
> still supports ISA, but...
>
>
Does that machine have hyperthreading? If so, turn it off,
On 05/03/2017 11:36 PM, Gene Heskett wrote:
> On Wednesday 03 May 2017 23:44:02 Jon Elson wrote:
>
>> On 05/03/2017 09:28 PM, Gene Heskett wrote:
>>> The killer in the beaglebone soup is the cost of the "capes". You've
>>> over $200 plus psu's et
On 05/03/2017 09:28 PM, Gene Heskett wrote:
>
> The killer in the beaglebone soup is the cost of the "capes". You've over
> $200 plus psu's etc before it can turn 2 motors at the same time.
Umm, the CRAMPS board is $79.95, and I sell the 8825 drivers
for $5 each, but I get them from China for abou
On 05/03/2017 09:02 PM, Gene Heskett wrote:
>
> Sure, but whats the bandwidth of a parport? 50 kilobaud equ maybe.
Actually, 500 K bytes/second is easy on a standard parport,
today.
Jon
--
Check out the vibrant tech comm
On 05/03/2017 02:22 PM, Gene Heskett wrote:
> Greetings;
>
> What x86 board, suitably small but not that outpriced yudoo thingy, will
> run linuxcnc well AND can do the spi thing?
>
> Cheers, Gene Heskett
Well, the various versions of the Beagle Bone run the
Machinekit fork of LinuxCNC fairly well
On 04/29/2017 04:26 PM, Jon Elson wrote:
And, it seems to be back up!
Thanks,
Jon
--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/sla
On 04/29/2017 03:40 PM, andy pugh wrote:
> On 29 April 2017 at 21:24, Bengt Sjölund wrote:
>> unable to log since afternoon local time
> http://downforeveryoneorjustme.com/forum.linuxcnc.org
>
> I also can't get in.
>
Ah, yes, the FORUM is down, the rest of the web site is up.
Jon
--
On 04/27/2017 12:17 PM, Todd Zuercher wrote:
>
> Has less to do with snobbery, than the obscenely huge fines levied by the EPA
> against those caught dealing with the "uncertified".
>
>
Yes, but I wanted to buy a capacitor, not refrigerant. Oh,
well...
Jon
-
On 04/18/2017 10:01 AM, Todd Zuercher wrote:
> Is it possible to connect two shafts at 90degrees to each other with a timing
> belt?
>
W. M. Berg (now assimilated into Stock Drive
Products/Sterling Instruments) used to have a whole line of
tricky "belts" for these special cases. Generally, they
On 04/13/2017 12:44 PM, Todd Zuercher wrote:
>
> But I'm cutting out a 2ft x 3ft window. It would be silly to pocket fill
> that entire thing.
Yes, that is something I do all the time. I call it
trepanning, and I have programs to do that, also. However,
there's no way to avoid the first cut a
On 04/13/2017 10:19 AM, Kirk Wallace wrote:
> On 04/13/2017 08:04 AM, andy pugh wrote:
>> On 13 April 2017 at 15:41, Todd Zuercher
>> wrote:
>>> Suggestions on where I should go from here?
>> Download Fusion360 and get a real trochoidal milling path.
>>
> It should not be terr
On 04/13/2017 09:41 AM, Todd Zuercher wrote:
> Here I go again. Unfortunately, the aluminum jig was a big hit, and now they
> want more. So I thought I'd take a crack at a trochoirdal milling path. My
> first try gave mixed results. Looking for advice.
> My CAM software still doesn't have a t
On 04/13/2017 05:39 AM, andy pugh wrote:
> On 13 April 2017 at 01:53, Eric Keller wrote:
>>USDigital used to have something called an
>> "EPOT" but they got rid of it for some reason.
> https://tinyurl.com/ke75fzx any good?
>
No, not a digital pot, he wants a device that puts out
step/directi
On 04/12/2017 09:08 PM, Gene Heskett wrote:
>
> Took a while, but I found one, and the bearings are on page 119. Amazon
> sent me B-1412-OH;PB;L125's which are 1.125" OD, when the x-ref should
> have pointed at a BH-1412-OH;PB;L125, which is the correct 1.1875" OD.
Ugh, hate companies that have dif
On 04/12/2017 08:58 AM, Kirk Wallace wrote:
> On 04/11/2017 11:17 AM, Dave Cole wrote:
>> Kirk,
>>
>> Go online and get your refrigerant license.
>> I did that years ago and I think it was $35 or so and it makes you legit
>> so you can buy parts and stuff from local HVAC houses.
Yes, the EPA "green
On 04/11/2017 07:50 PM, Gregg Eshelman wrote:
> Isn't he the guy who used to pour liquid oxygen on cheap BBQ grills?
Yes, this **IS** that same George Goble!
Apparently, these antics are forever over on order of the
fire marshall. They threatened him with arrest for creating
terrorist explosives
On 04/11/2017 12:32 PM, Gene Heskett wrote:
> If you have a slow leak with R-12 in it, putting R-134a in
> it will probably let you hear the leak, its a much smaller
> molecule and can get out of a leak R-12 can't. R-134a also
> operates best at 2-3x the high side pressure R-12 works
> best at.
On 04/11/2017 09:49 AM, Kirk Wallace wrote:
> Oops, after more thought, "You wouldn't want to put R-134a
> in it." doesn't necessarily mean stick with the R-12, but
> there may be a better alternative. I'll have to work on
> this some more.
Look up George Goble of Purdue. he developed several
On 04/10/2017 08:32 PM, Ken Strauss wrote:
> Have you checked archive.org for captured copies?
>
>
It turns out the manuals are still there, but you can't get
to them from the product selector. But, if you go in
through the document search, and know the part numbers, they
still come up. I down
I just noticed that AMC (Advanced Motion Controls) seems to
have pulled all their legacy servo amp manuals from their
web site in the last week. NOT a great discovery!
Jon
--
Check out the vibrant tech community on one
On 04/10/2017 05:47 AM, Roland Jollivet wrote:
> Intriguing.
> But.. you can burn out the compressor if you run with no or little gas, as
> the compressor itself cannot dissipate sufficient heat. It needs gas to
> carry the heat away to the condensor. The condensor is part of the cooling
> system f
On 04/09/2017 11:16 PM, Kirk Wallace wrote:
> I recently verified that the
> thermostat works and that the compressor is basically on all of the
> time. I got to thinking this is a waste of electricity for something
> that barely works,
Yes, you really should replace it. Refrigerators that are
On 04/08/2017 07:09 PM, Gene Heskett wrote:
> On Saturday 08 April 2017 19:42:26 Jon Elson wrote:
>
>> On 04/08/2017 01:51 PM, Gene Heskett wrote:
>>> I need to go to tsc or somewhere, wallies maybe, and get
>>> me some of those 3 to 2 electrical adaptors as I just
On 04/08/2017 01:51 PM, Gene Heskett wrote:
> I need to go to tsc or somewhere, wallies maybe, and get
> me some of those 3 to 2 electrical adaptors as I just
> found my gigahertz sampler scopes 3rd wire ground pin is
> .2 ohms from a damned probe ground lead, so just hooking
> up a ground lead
On 04/08/2017 11:52 AM, Chris Albertson wrote:
> Some place inside that encoder is a normal quadrature signal. Likely
> right at the phototransistor.If you could find it and buffer it
> then you have a conventional motor that is easy to interface.
Well, in the case of the Fanuc serial encoders
On 04/08/2017 12:05 AM, hubert wrote:
> I have a Servo that has an undocumented feedback encoder. I am
> interested in trying to decipher it. Is it feasible to run the servo
> without feedback connected, and put a digital storage scope on its
> outputs to capture the signal? It is an increm
On 04/07/2017 11:52 AM, Peter C. Wallace wrote:
> Note that these times are all in CPU clocks
>>
Thanks for pointing that out! (I'd forgotten that). Is
there an easy way to convert that to seconds?
Is it just the stated clock rate of the CPU in GHz?
Jon
On 04/07/2017 11:25 AM, Gene Heskett wrote:
> On Friday 07 April 2017 11:53:45 Jon Elson wrote:
>
>> On 04/07/2017 10:29 AM, Gene Heskett wrote:
>>> What I want, but don't know if I can get, is to have the
>>> servo thread running at the highest priority, fully
On 04/07/2017 10:29 AM, Gene Heskett wrote:
> What I want, but don't know if I can get, is to have the
> servo thread running at the highest priority, fully
> capable of interrupting the jog-thread, but the jog-thread
> cannot interrupt the servo thread as its not that time
> critical. How best
On 04/06/2017 07:39 AM, Eric H. Johnson wrote:
> All,
>
>
>
> Just an FYI, Canonical is giving up on the Unity interface for Ubuntu and
> going back to Gnome.
>
>
HURRAY! Glorious news! But, it was possible to make later
Ubuntu systems revert to Gnome-classic pretty easily.
The only hack was
On 04/05/2017 09:30 AM, Todd Zuercher wrote:
> I still have (had) 2 machines running Linuxcnc on Ubuntu 10.04. One of which
> seems to be locked into staying with it because of Hardware limitations (an
> ISA interface card). In the past week one of those machines started freezing
> up while runn
On 04/04/2017 08:57 PM, Dave Cole wrote:
> Here is a discussion about inertial mismatch.
>
> http://www.motioncontrolonline.org/content-detail.cfm/Motion-Control-Technical-Features/Understanding-the-Mysteries-of-Inertia-Mismatch/content_id/404
>
> The Sizing software that Automation Direct has on t
On 04/04/2017 01:35 PM, robert - Innovative-RC wrote:
> Hi
>
> i am planning to retrofit a machine i will change the servo motors as
> current ones are faulty etc
> anyways i know the motor ratings on the machine right now as follows
>
> Yaskawa USAFED-30FS20E
> Rated 18.6Nm
> Continuou Max 22.
701 - 800 of 4576 matches
Mail list logo
