Can you describe the behaviour that you want? Do you want the spindle
speed to stay at the same speed high when you release the joypad, or
do you want it to return to the original speed?
Have a look at the spindle pins in halui:
http://www.linuxcnc.org/docs/html/man/man1/halui.1.html
Hi John;
I've a small Unimat SL that I've CNC'd (and talked about it at the last
CNCWorkShop back in June, and in my blog)
Some random thoughts:
1) Beaglebone is fine. Sure, graphics is slow, but so what? Change Axis
to the DRO display and you are fine.
That's what I thought too
On 08/12/2015 03:07 PM, Tom Easterday wrote:
I have a milling machine running Ubuntu 10.04 and I went to upgrade
Linuxcnc from 2.6.8 to 2.6.9 today from the Update Manager and it
gives me the message below and then hangs (hangs Update Manager - not
Ubuntu). I have to launch the Activity
On 8/12/2015 4:25 PM, Gene Heskett wrote:
On Wednesday 12 August 2015 12:35:18 Dave Caroline wrote:
Why stepper ? gearing up the speed with a pulley even less sense, they
lose so much torque at a sensible lathe spindle speed that I cannot
understand the reasoning for going down the wrong
On 8/12/2015 6:22 AM, John Alexander Stewart wrote:
5) I've a larger, stronger lathe (a big brother to the Unimat - an Emco
Compact-8) that is my target lathe for CNC; not sure if I'm going to
develop the Unimat further.
That's what the Denford ORAC was based on. Somewhere there's a forum
On Wednesday 12 August 2015 12:35:18 Dave Caroline wrote:
Why stepper ? gearing up the speed with a pulley even less sense, they
lose so much torque at a sensible lathe spindle speed that I cannot
understand the reasoning for going down the wrong rabbit hole.
Just think what would happen if
I have a milling machine running Ubuntu 10.04 and I went to upgrade Linuxcnc
from 2.6.8 to 2.6.9 today from the Update Manager and it gives me the message
below and then hangs (hangs Update Manager - not Ubuntu). I have to launch the
Activity Monitor and force quit it.
The error that pops up
I have a program with threading G33 that will run if I take the threading
out of it but throw an error of Bug: Call Stack Under Run if I leave the
threading in the program. We use a post processor for our programs and have
done threading in the past but this one is persistent. Any Ideas?
My spindle speed is controlling by pwmgen component.
So that I have a connection signal:
motion.spindle-speed-out == pwmgen.0.value
I can control spindle speed using AXIS UI buttons or S G-command
I connected a gamepad and I want to control the spindle speed
with joyhandle.X.out pin.
The idea
John,
If you are using a stepper at any significant revs, will there not be a
problem
as the torque drops off as the rpm increase (unlike a servo)?
Marcus
Thanks Marcus,
Yes. I realize that.
The lack of a spindle input or PWM output on the Probotix cape and the
higher price of the PMDX
From: jmkasun...@fastmail.fm
To: emc-users@lists.sourceforge.net
Date: Wed, 12 Aug 2015 01:58:57 -0400
Subject: Re: [Emc-users] BeagleBone and LinuxCNC for a lathe.
On Wed, Aug 12, 2015, at 01:31 AM, John Dammeyer wrote:
In this case I'm considering installing it on a Unimat
LinuxCNC can create any mixture of step pulses, PWM, and other ways of
controlling motors. The motor interface is modular and you can set it
up
to do just about anything.
jmkasun...@fastmail.fm
Linuxcnc doesn't actually support the beaglebone.
It was supported for a while on
On Wed, Aug 12, 2015, at 01:31 AM, John Dammeyer wrote:
In this case I'm considering installing it on a Unimat Lathe. The 650 oz-in
size 34 motor appears to be large enough compared to the small DC brush
motor currently attached. I'd have to step up the RPM in order to get the
turning
John,
If you are using a stepper at any significant revs, will there not be a problem
as the torque drops off as the rpm increase (unlike a servo)?
Marcus
On 12 Aug 2015, at 08:28, John Dammeyer wrote:
LinuxCNC can create any mixture of step pulses, PWM, and other ways of
controlling
On 12 August 2015 at 08:39, taras.korol...@openmailbox.org wrote:
I can control spindle speed using AXIS UI buttons or S G-command
...
motion.spindle-speed-out is output pin and it's not writeable.
I think that the + / - buttons in Axis basically issue G-code S commands.
Can you describe the
On 12 August 2015 at 09:37, John Dammeyer jo...@autoartisans.com wrote:
The lack of a spindle input or PWM output on the Probotix cape and the
higher price of the PMDX cape rules out the Beagle for any sort of Linux CNC
at the moment. That and what appears to be a lack of continuing support
On 08/12/2015 07:43 AM, andy pugh wrote:
On 12 August 2015 at 13:36, Gene Heskett ghesk...@wdtv.com wrote:
This is a case where a hardware stepgen might be needed as software only
has a limit in output step frequency on the x86 driven pc of 40Khz that
is largely removed by the use of something
Why stepper ? gearing up the speed with a pulley even less sense, they
lose so much torque at a sensible lathe spindle speed that I cannot
understand the reasoning for going down the wrong rabbit hole.
Just think what would happen if your chatter frequency was anywhere
near the stepper resonance
On Wednesday 12 August 2015 08:43:33 andy pugh wrote:
On 12 August 2015 at 13:36, Gene Heskett ghesk...@wdtv.com wrote:
This is a case where a hardware stepgen might be needed as software
only has a limit in output step frequency on the x86 driven pc of
40Khz that is largely removed
Hi Gene, Thanks,
Warning, Ramblings have been edited for size. GRIN
Warning, generalized ramblings of an old fart follow.
.SNIP
Usable torque was pretty much gone by 2000 rpm.
I agree. Since the resolution for the spindle isn't nearly as a big a deal
for a spindle I thought I'd use pulleys
On 8/12/15 3:54 AM, andy pugh wrote:
On 12 August 2015 at 08:39, taras.korol...@openmailbox.org wrote:
I can control spindle speed using AXIS UI buttons or S G-command
...
motion.spindle-speed-out is output pin and it's not writeable.
I think that the + / - buttons in Axis basically issue
Hi John;
I've a small Unimat SL that I've CNC'd (and talked about it at the last
CNCWorkShop back in June, and in my blog)
Some random thoughts:
1) Beaglebone is fine. Sure, graphics is slow, but so what? Change Axis
to the DRO display and you are fine.
2) My OLD Unimat has a not so great
On 12 August 2015 at 13:36, Gene Heskett ghesk...@wdtv.com wrote:
This is a case where a hardware stepgen might be needed as software only
has a limit in output step frequency on the x86 driven pc of 40Khz that
is largely removed by the use of something like a mesa 5i25 card.
The Beaglebone
On Wednesday 12 August 2015 01:31:07 John Dammeyer wrote:
I am one who is running a small lathe with LinuxCNC, which it does
far better than I can.
This subject has come up in the past, and I don't recall anyone
saying no it can't be done.
Given a big enough motor, I see no huge
On Wednesday 12 August 2015 08:43:33 andy pugh wrote:
On 12 August 2015 at 13:36, Gene Heskett ghesk...@wdtv.com wrote:
This is a case where a hardware stepgen might be needed as software
only has a limit in output step frequency on the x86 driven pc of
40Khz that is largely removed by the
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