Absolutely no idea. Just wanted to have a smile cross your face. I hope it
did.
John
> -Original Message-
> From: Gene Heskett [mailto:ghesk...@shentel.net]
> Sent: October-13-21 10:35 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Fwd: Fwd: Rogue Index Pulses
>
On Thursday 14 October 2021 01:22:19 John Dammeyer wrote:
> Gene,
> You've been so helpful in the past I thought I'd pass the attached
> round tuit on to you. John
>
Thanks John. Is that copyrighted? I've a bar of alu I've been threatening
to make some coins like that from, but everything I have
Gene,
You've been so helpful in the past I thought I'd pass the attached round tuit
on to you.
John
> -Original Message-
> From: Gene Heskett [mailto:ghesk...@shentel.net]
> Sent: October-13-21 9:42 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Fwd: Fwd: Rogue
On Wednesday 13 October 2021 21:09:54 Chris Albertson wrote:
> You are right, but under all conditions, the resistor connecting the
> wire to ground through a diode has lower impedance than the same wire
> terminated at a transistor gate as was the case before. The proof is
> that it works now.
Differential drive is always the best solution, look at Ethernet. It can
push 100 megabit over a kilometer using unshielded cable.
But single ended signals can be noise resistant if the wire uses resistive
termination. The opto-isolator is proving resistive termination.
On Wed, Oct 13, 2021
Hi Chris,
When I developed my ELS for 1PPR one of the criteria was that the index vane or
slot had to be wide enough so that it would generate a pulse at least about 5
or so 50uS ticks wide and at least again that wide for the non index period.
That the tick count would then be at least about
You are right, but under all conditions, the resistor connecting the wire
to ground through a diode has lower impedance than the same wire terminated
at a transistor gate as was the case before. The proof is that it works
now.
The other thing was thinking is that it should be simple to use
To fair we need to use the word low resistance path to ground. The impedance
of the wiring at 300kHz where electrical noise might exist from a VFD may be
considerably higher.
Think of the basic electronics of an inductor and capacitor in parallel. At DC
the resistance and impedance is the
Then this proves the cause. The isolators provide a low impedance path to
ground. It is just current-limiting resistor and a forward-biased diode.
With this low impedance to ground there is no way for EMI to cause the
voltage on the wire to raise.
On Wed, Oct 13, 2021 at 1:40 PM Peter Hodgson
Great!
> -Original Message-
> From: Peter Hodgson [mailto:peterjohnhodg...@gmail.com]
> Sent: October-13-21 1:38 PM
> To: 'Enhanced Machine Controller (EMC)'
> Subject: [Emc-users] Fwd: Fwd: Rogue Index Pulses
>
>
> Well!
>
> A quick update for those that are interested.
>
Thank you John, that looks like a really useful document.
Pete
> On 13 Oct 2021, at 16:49, John Figie wrote:
>
>
>
> John Figie
>
>
>> On Wed, Oct 13, 2021 at 10:15 AM Peter Hodgson
>> wrote:
>>
>> On 13/10/2021 15:43, Gene Heskett wrote:
>> > On Wednesday 13 October 2021 06:06:06
I wish that the polyjet resin printer technology would
reach the consumer market. We were given a Stratasys
Eden 500V polyjet printer last year (originally a $200K
machine), and it lays down 16 micron thick layers with
42 micron horizontal resolution. Parts are solid. Build
envelope is huge
Well!
A quick update for those that are interested.
The HPCL2631's won the postal race and arrived in the mail today.
I made up a little 'interface' board to mount them on with the pull ups,
caps, etc. and fitted that board this evenening.
After an initial check on the index
Oops, forgot the link! Here's a good rundown of super glue workholding:
https://youtu.be/r6DCvtcU8_M
On Wed, Oct 13, 2021, 1:15 PM John Dammeyer wrote:
> Hi Dave,
> The question was more about how to hold something like this to make it
> from scratch and there have been some great
Here's a good rundown of super glue workholding.
On Wed, Oct 13, 2021, 1:15 PM John Dammeyer wrote:
> Hi Dave,
> The question was more about how to hold something like this to make it
> from scratch and there have been some great suggestions. Your method to
> repair would also work. At the
Yes, experimental setup does require some skill. Sometimes you even have
to build a test connection to the scope with a connector on it. Then on
the scope there are setting for "DO coupled" or "AC coupled and for placing
in low pass filters and trigger level and on the digital scope even more
I'll agree with Andy here. I have a dual trace older digital scope and a 4
trace digital that can even decode CAN, SPI and I2C messaging. I bought a
small Digilant PC development kit version for $400 or so to get UART decoding
for a PAN-TILT system that was misbehaving. The add on module for
Hi Dave,
The question was more about how to hold something like this to make it from
scratch and there have been some great suggestions. Your method to repair
would also work. At the moment, when I do use the tripod I can loosen the
clamp screw, and push/pull on the rack to change the
On 10/13/21 12:03 PM, Martin Dobbins wrote:
Bruce Layne wrote:
Someone needs to make an upgraded MSLA printer that automates the post
processing operations.
I'll pull the trigger when they do, Bruce.
I think of the current state of resin 3D printing as similar to the
early days of
Machine chassis frames are "earthed" as a safety precaution and you never
want to disable is. The idea is that if there is some kind of failure a
220 volt AC mains "hot" wire might contact the frame and make the entire
machine "hot". But if the frame is Earthed is will still be safe and the
On Wed, 13 Oct 2021 at 12:49, Peter Hodgson wrote:
>
> They look nice. Which one do you usualy turn to?
The Tek is on the shelf above my workbench, plugged in and with the
probes hooked up, so that one.
> https://banggood.app.link/a2038i0Ujkb
Or this, on next-day with no worries about import
Bruce Layne wrote:
Someone needs to make an upgraded MSLA printer that automates the post
processing operations.
I'll pull the trigger when they do, Bruce.
Do you have an MSLA right now? What model?
Martin
___
Gene Heskett wrote:
> > Unforch, John, not even my latest copy of freecad can open that
> > file.
>FreeCAD_0.19-23578-Linux-Conda_glibc2.12-x86_64.AppImage, here on stretch
> with 32gigs of dram, goes into a cancelable busy loop loading it
FWIW, Gene
I'm using
I think I'd try to replicate the arm with a piece of sheet steel folded and
bent appropriately.
Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street
Dalton, Ohio 44618
Phone: (330)828-2105ext. 2031
-Original Message-
From: Bruce Layne
Sent: Wednesday, October 13, 2021 11:01 AM
To:
If you can afford it, a part like this can be 3D printed in stainless
steel. I think SpaceX 3D prints the injectors used on their Raptor rocket
engines in some exotic material like Inconel. Printer that can do that
are expensive but you can use a service.
But I think the point of this handle
On 10/13/21 12:02 AM, John Dammeyer wrote:
Chrome plated pot metal and if that can crack and break a 3D printed handle
would definitely.
An FDM 3D printed crank arm would almost certainly break, regardless of
the material used.
An MSLA (resin) 3D printed crank arm almost certainly would
On 13/10/2021 15:43, Gene Heskett wrote:
On Wednesday 13 October 2021 06:06:06 Peter Hodgson wrote:
I just tested the VFD shield and supply line shield and both are open
circuit when not connected to the start bolt.
There are three AC motors: Spindle, Oil Lubrication and Coolant Pump
that
On Wednesday 13 October 2021 06:21:46 andy pugh wrote:
> On Wed, 13 Oct 2021 at 11:13, Peter Hodgson
wrote:
> > I'm watching a couple of Oscilloscopes on eBay so might take the
> > plunge.
>
> I am going to go against the consensus and suggest that if you don't
> already have an oscilloscope,
Being lazy and cheap I would clamp the piece broken handle side up to a
plate using a pin thru the hole as a second reference for holding, If
necessary use a screw thru the hole depending on size. Now that you
have it affixed, probe profile and convert to dwg/cad. Machine off the
casting on
On Wednesday 13 October 2021 06:09:42 Peter Hodgson wrote:
> Thanks Chris,
>
> I'm watching a couple of Oscilloscopes on eBay so might take the
> plunge.
>
> Not sure when I would use it after this episode although I am learning
> a lot from you guys and enjoying the new knowledge so it might may
On Wednesday 13 October 2021 06:06:06 Peter Hodgson wrote:
> I just tested the VFD shield and supply line shield and both are open
> circuit when not connected to the start bolt.
>
> There are three AC motors: Spindle, Oil Lubrication and Coolant Pump
> that are all grounded to the machine frame
On Wednesday 13 October 2021 05:50:52 Dr. Andreas O. Lindner wrote:
> Opens OK in Freecad 0.19 on my MAC.
I don't have any mac's, I don't want to test my fire insurance. I am the
long since retired CE at a tv station, a chair I held for 18+ years at
the end of the last century. They bought a
On Wednesday 13 October 2021 05:43:23 marcus.bow...@visible.eclipse.co.uk
wrote:
> On 2021-10-13 09:31, Gene Heskett wrote:
> > Unforch, John, not even my latest copy of freecad can open that
> > file.
>
> It opens OK in the free version of Fusion 360.
>
But the free has been gone for over a
That looks like a lot of scope for the money. Having used both CRT and
digital, in my opinion digital is definitely the way to go. I gave away
my last CRT scope about 6 years ago.
Les
On 13/10/2021 12:49, Peter Hodgson wrote:
They look nice. Which one do you usualy turn to?
I've been shying
On Wed, 13 Oct 2021 at 12:59, Thomas J Powderly wrote:
> I got quite lost and was never able to add the keys.
You can just grab the .deb file by hand, then install it with gdebi,
dpkg or (my normal way) with apt-get.
sudo apt-get ./name-of-deb-file
The ./ is a clue to apt that it should look
Thx very much Andy,
I read that I could add the linuxcnc repo,
but that was another rabbithole with 'no inrelease'
and JT's comments on the real repo was 'linuxcnc.org/dists' ,
I got quite lost and was never able to add the keys.
(btw the rtpreempt _was_ lost, but MXMaster's install.sh
On Wed, Oct 13, 2021 at 7:41 AM andy pugh wrote:
> On Wed, 13 Oct 2021 at 11:35, Peter Hodgson
> wrote:
> >
> > Thanks Andy, that's good info and will temper my expectations.
> >
> > I'll see what comes along.
>
> FWIW I have two, a rather cute little Tektronix (with character
> generation on
They look nice. Which one do you usualy turn to?
I've been shying away from the CRT scopes as I've seen many on eBay for
sapres or repair and for a few extra ££'s the one on this link seems to
cover all the bases and I can also claim the VAT back so would only cost
me £125 !! :
On Wed, 13 Oct 2021 at 11:35, Peter Hodgson wrote:
>
> Thanks Andy, that's good info and will temper my expectations.
>
> I'll see what comes along.
FWIW I have two, a rather cute little Tektronix (with character
generation on the CRT) dating from the 1980s:
https://w140.com/tekwiki/wiki/336
And
Thanks Andy, that's good info and will temper my expectations.
I'll see what comes along.
My thought is that it may help me understand general electronics a bit
more and I can always put back on eBay if I don't find it useful.
Pete
On 13/10/2021 11:21, andy pugh wrote:
On Wed, 13 Oct 2021
On Wed, 13 Oct 2021 at 11:13, Peter Hodgson wrote:
> I'm watching a couple of Oscilloscopes on eBay so might take the plunge.
I am going to go against the consensus and suggest that if you don't
already have an oscilloscope, and don't know how to use one, then you
might not find it much help.
Thanks Chris,
I'm watching a couple of Oscilloscopes on eBay so might take the plunge.
Not sure when I would use it after this episode although I am learning a
lot from you guys and enjoying the new knowledge so it might may find
other uses.
Pete
On 12/10/2021 03:13, Chris Albertson
I just tested the VFD shield and supply line shield and both are open
circuit when not connected to the start bolt.
There are three AC motors: Spindle, Oil Lubrication and Coolant Pump
that are all grounded to the machine frame via their mountings but I
have also ran individual earth cables
Opens OK in Freecad 0.19 on my MAC.
Dr. Andreas O. Lindner
Lindner TAC
Auhofstraße 11 B / 11
1130 Wien
Austria
Fax: +43 1 877 68 73
Mobil: +43 664 41 24 742
Email: a.lind...@lindner-tac.at
Web: http://www.lindner-tac.at
> Am 13.10.2021 um 10:31 schrieb Gene Heskett :
>
> On Wednesday 13
Thanks Andy,
I have a Schaffner FN2030-10-06 input filter on the VFD supply.
It became apparent I needed that when I was trying to run Ethernet over
the workshop power lines and it dropped out everytime I ran the spindle!
Pete
On 11/10/2021 23:51, andy pugh wrote:
On Mon, 11 Oct 2021 at
On 2021-10-13 09:31, Gene Heskett wrote:
>
Unforch, John, not even my latest copy of freecad can open that file.
>
It opens OK in the free version of Fusion 360.
Marcus
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
On Wednesday 13 October 2021 00:47:45 John Dammeyer wrote:
> Here we go.
> How to hold and mill this?
> John
>
> > -Original Message-
> > From: John Dammeyer [mailto:jo...@autoartisans.com]
> > Sent: October-12-21 9:02 PM
> > To: 'Enhanced Machine Controller (EMC)'
> > Subject: Re:
On Wednesday 13 October 2021 00:02:12 John Dammeyer wrote:
> > > Maybe a stub on the end held in a 4th axis?
> > >
> > > Any suggestions are welcome.
> > > John
> >
> > What is it cranking? Maybe I could 3d print it.
> >
> > Cheers, Gene Heskett.
>
> Chrome plated pot metal and if that can crack
Super glue and tape. https://www.youtube.com/watch?v=e-coDYZCmEw
On Tuesday, October 12, 2021, 11:33:19 PM MDT, John Dammeyer
wrote:
Thanks Chris.
I haven't needed the handle all that badly or I would have done something.
What I also just noticed is the plastic handle is held with
On Wed, 13 Oct 2021 at 06:06, Thomas J Powderly wrote:
> import gtksourceview2 as gtksourceview
>
> No module named gtksourceview2
For x86 and armhf we have back-ported Gtksourcevew:
http://www.linuxcnc.org/dists/buster/base/binary-armhf/
(python-htksourceview)
Which linuxcnc repository is
On Wed, 13 Oct 2021 at 04:36, John Dammeyer wrote:
> I can't figure out how I'd hold the raw stock to machine it.
I would think in terms of machining one face, then making a pocket in
some other stock, hot-glueing the handle in the pocket (machined face
down) and then finishing.
I did that
On 2021-10-13 06:31, John Dammeyer wrote:
Thanks Chris.
I haven't needed the handle all that badly or I would have done
something. What I also just noticed is the plastic handle is held
with a rivet into the top of a larger extension. New drawing
attached.
Isn't there also a raised ring on
52 matches
Mail list logo
