So it happened again this afternoon on the Pi4 1GB. Wifi is active as is
Ethernet to the 7i92H.
"Unexpected realtime delay on task 0 with period 100
This Message will only display once per session.
Run the Latency Test and resolve before continuing."So just moving windows
around and
Kind of cool to do an M3 S10 and see the what would be the spindle turning at
10 RPM with STEP/DIR control. (all on my test bench with a smaller motor at
the moment and Pi4/7i92H instead of PC/7i92H.
Been working on that all afternoon. Moved controllers around. Moved motors.
Nothing. And
On Tue, 15 Jun 2021, John Dammeyer wrote:
Date: Tue, 15 Jun 2021 16:14:00 -0700
From: John Dammeyer
Reply-To: "Enhanced Machine Controller (EMC)"
To: "'Enhanced Machine Controller (EMC)'"
Subject: Re: [Emc-users] Spindle Control
Kind of cool to do an M3 S10 and see the what would be the
> From: Peter C. Wallace [mailto:p...@mesanet.com]
> On Tue, 15 Jun 2021, John Dammeyer wrote:
>
> > Kind of cool to do an M3 S10 and see the what would be the spindle turning
> > at
> > 10 RPM with STEP/DIR control. (all on my test bench with a smaller motor at
> > the moment and Pi4/7i92H
I believe this doc explains the spindle encoder feedback.
http://linuxcnc.org/docs/2.4/html/examples_spindle.html
John
> -Original Message-
> From: John Dammeyer [mailto:jo...@autoartisans.com]
> Sent: June-15-21 4:52 PM
> To: 'Enhanced Machine Controller (EMC)'
> Subject: Re:
On Tue, 15 Jun 2021 at 03:07, Gregg Eshelman via Emc-users
wrote:
>
> Voltage doubling VFD, but they start at 5 horsepower.
But there is nothing to prevent you making your own, starting with a
used 3hp unit from eBay.
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
Lathe has vfd, router is running a superpid with a Hitachi m12vc, mill is
using a servo motor
I manually turned my Hitachi router on and off until the pandemic hit, then
I started by adding a relay to control it, which then became my obsession
with industrial electronics
Phil T.
The Feral
On Tue, 15 Jun 2021 at 01:31, andrew beck wrote:
> I have a two speed gearbox in my cnc lathe
>
> with hydraulic solenoids to change gear
You have the same setup and the same requirements as me, so I expect
that my HAL component will work for you.
It uses a 3-position switch to select auto,
Print in PLA with only one perimeter and as little infill as you can get by
with, print all the sprues and vents as one part with the pattern too. Then all
you have to do is pack the print tightly in sand then pour in the molten metal
to burn out the plastic. Look up lost PLA casting. With
On Tue, 15 Jun 2021 at 10:33, Gregg Eshelman via Emc-users
wrote:
>
> Look up lost PLA casting.
Though the drawback with that is that you only get one shot at it.
I have been tending to print conventional patterns. Things like
supports and core boxes become really easy with 3D CAD and 3D
On Tue, 15 Jun 2021 at 01:16, jrmitchellj wrote:
>
> Got home & checked the debian-version file, which states 7.11. As I recall
> that is Wheezy.
> That is only 5 years old.
That's 5 years since the last update. Wheezy was first released in
2013 and went out of Long Term Support in 2018.
On Tue, 15 Jun 2021 at 05:56, John Dammeyer wrote:
> And even nicer all painted up.
> http://www.autoartisans.com/mill/HarmonicDrive/PatternPrep-3.jpg
It's the wrong colour!
https://nvlpubs.nist.gov/nistpubs/Legacy/CS/cs19-32.pdf
In the US it is black for as-cast surfaces and red for "to be
> From: andy pugh [mailto:bodge...@gmail.com]
> On Tue, 15 Jun 2021 at 05:56, John Dammeyer wrote:
>
> > And even nicer all painted up.
> > http://www.autoartisans.com/mill/HarmonicDrive/PatternPrep-3.jpg
>
> It's the wrong colour!
> https://nvlpubs.nist.gov/nistpubs/Legacy/CS/cs19-32.pdf
> In
Hi Greg
I've tried the lost foam method in dry sand. Outside. Can't stand the smell
of the sand afterwards.
Although PLA smell isn't that bad I've seen the castings produced by lost 3D
printed lost PLA. They are ugly just as 3D printed parts are actually quite
ugly too.If the goal is
Before the extruded plastic 3D printing that was the type of 3D printer I was
considering. The hobby approach was to use ink jet nozzles for printing a
crazy glue type material onto starch layers.
Material costs would not be cheap. Then came pla printing and I've not looked
back. I've
Oops. Forgot the link.
http://www.autoartisans.com/cnc/Casting.jpg
> -Original Message-
> From: John Dammeyer [mailto:jo...@autoartisans.com]
> Sent: June-15-21 9:24 AM
> To: 'Enhanced Machine Controller (EMC)'
> Subject: Re: [Emc-users] Spindle Control
>
> > From: andy pugh
On Tue, 15 Jun 2021 at 15:21, Roland Jollivet wrote:
> Which often makes me wonder why guys aren't CNC machining the moulds rather.
> You'd have a simple CNC mill where the tool sticks directly upwards, and
> use a dremel as a spindle.
> Now you just 'machine' away the green sand until done.
On Tue, 15 Jun 2021 at 11:55, andy pugh wrote:
> On Tue, 15 Jun 2021 at 10:33, Gregg Eshelman via Emc-users
> wrote:
> >
> > Look up lost PLA casting.
>
> Though the drawback with that is that you only get one shot at it.
>
Which often makes me wonder why guys aren't CNC machining the moulds
1- Lathe with 3 phase input/ 3 phase output VFD
2- LCNC has complete control over the vfd. But I also have override,
direction and on/off buttons on the main panel.
Leonardo Marsaglia
El dom., 13 jun. 2021 16:52, John Dammeyer
escribió:
> Quick little survey on what everyone has on their
Forgot to say. The speed reference for the VFD is a pulsed signal. So
basically I'm feeding a step generator to the VFD for that. I just had to
play a little bit with step length and space to adjust the duty cycle and
get it working right.
Leonardo Marsaglia
El mar., 15 jun. 2021 14:38, Leonardo
On Tue, 15 Jun 2021 at 17:27, John Dammeyer wrote:
> Of course since I am also my foundry I'd have to pay attention to the colour
> in the first place. I take it the "to be machined" surfaces can have the
> gates and runners attached while as-cast should be left as is?
I think it is actually
Just a short addendum. The 7i92 manual says the outputs are capable of
sourcing 24mA. Putting a 330 ohm resistor to ground onto pin 1 of the
Probotix BoB will sink 15mA when the 7i92 outputs a high level so it's within
spec. When the 7i92 goes inactive which it seems to do when LinuxCNC
I have a Hohman Designs Step to Voltage module that does that. It uses 0 to
25Khz for 0 to 10V. I couldn't use that with my ELS project because max step
rate for that was 20kHz. But it would work with the Linux Installation instead
of the cheapy 0-10V 1kHz PWM converter. I doubt the
On Tue, Jun 15, 2021 at 9:41 AM John Dammeyer
wrote:
> Before the extruded plastic 3D printing that was the type of 3D printer I
> was considering. The hobby approach was to use ink jet nozzles for
> printing a crazy glue type material onto starch layers.
>
> Material costs would not be cheap.
I don't disagree that for complex parts like your example 3D printing is an
amazing way to do this. I'll bet though if you went out to buy say a drill
press and had a choice between one that had been cast with ugly rough 3D
printed castings and one that had smooth pattern created castings you'd
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