That looks like a good one, and well trafficked. I'll add it to my to-lurk
list for now, and join in when I have some questions. Thanks!
-g
On Tue, Apr 15, 2008 at 4:46 AM, John Thornton [EMAIL PROTECTED] wrote:
I get real good info from practical machinest
http://www.practicalmachinist.com
I've tried to get into IRC a few times with poor results. I think I just
haven't figured out exactly how it works, but it seems to be a last, great
stronghold of the knowledgeable populace. I should give it another go. See
you on the other side, and thanks!
-g
On Tue, Apr 15, 2008 at 5:16 AM,
Funny, I use Pan 2 to surf newsgroups often, and never considered there
might be a good machining group. I'll add it to my subscriptions, and lurk.
Back when I was getting into Flash Actionscript coding, I joined
alt.macromedia.flash, and quickly learned most of everything ever talked
about in
On Tue, Apr 15, 2008 at 08:42:44PM -0700, Kirk Wallace wrote:
The motors are not labeled and I don't know
how to determine the steps per revolution.
...
I suppose I can add an index disk and sensor.
Is that perhaps a simple way to determine the steps per revolution?
(Count the steps fed to
If I remember correctly, the Quadrature signals will let the control
step a motor twice as fast as step and direction. It might be worth a
try before replacing your drives.
Roger Neal
[EMAIL PROTECTED]
- Original Message -
From: Kirk Wallace [EMAIL PROTECTED]
To: Enhanced Machine
There are some G-Code generators for simple things over at the EMC wiki site...
John
On 15 Apr 2008 at 14:04, Marc Koch wrote:
Hi,
I'm following this very interesting group for a while now. In the
meantime I build a plywood router and I played around with the
hobbyCNC board connected to
I also use the Tormach system and like it a lot. My Jet knee mill was
converted to move the table instead of the quill for Z. That leaves the
quill free for hand drilling, but also lets me make a real quick switch
on the tool holder. I installed the drawbar with a short but stiff
spring under
At 10:42 PM 4/15/2008, you wrote:
I am losing patience with the Bandit on my Shizuoka mill, so I am
thinking of converting to EMC2 sooner than later. I would like to save
the stepper drivers but they look like they might have a proprietary
integration with the controller. The drives have four
John Thornton wrote:
There are some G-Code generators for simple things over at the EMC wiki
site...
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Simple_EMC_G-Code_Generators
useful for simpler works without fireup the whole thing (CAD, CAM).
For a (embrionic) open source CAM give a look at
On Wed, 2008-04-16 at 17:23 +1000, Erik Christiansen wrote:
On Tue, Apr 15, 2008 at 08:42:44PM -0700, Kirk Wallace wrote:
The motors are not labeled and I don't know
how to determine the steps per revolution.
...
I suppose I can add an index disk and sensor.
Is that perhaps a simple
Kirk Wallace wrote:
Thanks for your reply, Erik. I was wondering if there was a way to
figure out the steps per revolution with the motors disconnected, but
it's probably not important, because I can adjust settings after I get
the motors working. Although, it would be nice to know to figure
On Wed, 2008-04-16 at 07:00 -0500, Andre' Blanchard wrote:
... snip
Step direction to quadrature conversion can be done, not all that much of a
circuit needed really.
http://www.cnczone.com/forums/showthread.php?t=12066
__
Andre' B. Clear Lake, Wi.
I tried to see what the driver
John Kasunich wrote:
Jon Elson wrote:
Peter C. Wallace wrote:
If you are just driving a bare motor, try raising your sampling rate...
Geez, the resonance seems to be about 40 Hz, my sampling rate is
already 1 KHz, 25 X higher. But, yes, I can go to at least 5
KHz and see what happens.
Jon
Kirk Wallace wrote:
I am losing patience with the Bandit on my Shizuoka mill, so I am
thinking of converting to EMC2 sooner than later. I would like to save
the stepper drivers but they look like they might have a proprietary
integration with the controller. The drives have four inputs that
Peter C. Wallace wrote:
Also you mentioned that you had some cogging. Is the resonance something that
happens statically or only when moving at certain velocities? Is it possible
that you have some non-linearity or even hysteresis in you drive - torque
curve?
The first large motor I
On Wed, 16 Apr 2008, Jon Elson wrote:
Date: Wed, 16 Apr 2008 12:17:10 -0500
From: Jon Elson [EMAIL PROTECTED]
Reply-To: Enhanced Machine Controller (EMC)
emc-users@lists.sourceforge.net
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Subject: Re: [Emc-users]
Hi All
I Previously had emc installed via the BDI I have recently tried to
upgrade to emc2,2 . I downloaded the ISO and cut it to a disc seemingly
without a hiccup. I can boot my machine using the live cd however when I
try to install the software the installation hangs at step 3 (Keyboard
On Wed, 2008-04-16 at 12:27 -0400, John Kasunich wrote:
Kirk Wallace wrote:
Thanks for your reply, Erik. I was wondering if there was a way to
figure out the steps per revolution with the motors disconnected, but
it's probably not important, because I can adjust settings after I get
If you actually have access to all 4 coils - then I would use types 9 or
10. This would be half stepping and give you 2000 steps per inch.
(.0005 per step) 200*2*5.
at a normal base period of 5 - you could get (without using
doublestep) 300ipm easy. Not that your machine would actually
On Wed, Apr 16, 2008 at 09:11:48PM +0200, Craig Muller wrote:
Hi All
I Previously had emc installed via the BDI I have recently tried to
upgrade to emc2,2 . I downloaded the ISO and cut it to a disc seemingly
without a hiccup. I can boot my machine using the live cd however when I
try
Hello,
I have loaded my box with Ubuntu and EMC2 following the instructions
provided on the download page.
I was able to get into the Sim config with no problems.
I have a Vital Systems Motenc-lite board and when I pick the VTI config, I
get the following error.
Debug file information:
On Tue, 2008-04-15 at 20:42 -0700, Kirk Wallace wrote:
... snip
The drives have four inputs that appear
to take in steps as quadrature signals plus their complements; QB,
QA, /QB, /QA.
QB ___|```|___|```|_
QA _|```|___|```|___
/QB ```|___|```|___|`
/QA `|___|```|___|```
I scoped out
On Wed, 2008-04-16 at 16:07 -0500, sam sokolik wrote:
If you actually have access to all 4 coils - then I would use types 9
or 10. This would be half stepping and give you 2000 steps per inch.
(.0005 per step) 200*2*5.
at a normal base period of 5 - you could get (without using
On Wed, 2008-04-16 at 16:14 -0700, Kirk Wallace wrote:
On Tue, 2008-04-15 at 20:42 -0700, Kirk Wallace wrote:
... snip
I am wondering if this is just a simple H-bridge with current limit? If
anyone has more information on this drive, I would appreciate hearing
it.
Looking more closely at
Greetings guys;
I edited the ini file and slowed the A axis down to 10%, or maxvel=7.2, with
corresponding slowdowns in the accel's too. and I added another 9 in front
of its limits so it can now turn 99,999 degrees.
Then I re-figured the cut for a .003 per A revolution, giving 61,200 degrees
Glenn,
The VTI configuration is for the Vigilant Technologies Inc (Vigilant
Products) board. I believe you will find the Vital systems configuration
under motenc.
Regards,
Eric
I have loaded my box with Ubuntu and EMC2 following the instructions
provided on the download page.
I was able to
Kirk Wallace wrote:
On Wed, 2008-04-16 at 16:14 -0700, Kirk Wallace wrote:
On Tue, 2008-04-15 at 20:42 -0700, Kirk Wallace wrote:
... snip
I am wondering if this is just a simple H-bridge with current limit? If
anyone has more information on this drive, I would appreciate hearing
it.
Gene Heskett wrote:
Greetings guys;
I edited the ini file and slowed the A axis down to 10%, or maxvel=7.2, with
corresponding slowdowns in the accel's too. and I added another 9 in front
of its limits so it can now turn 99,999 degrees.
Then I re-figured the cut for a .003 per A
On Wednesday 16 April 2008, John Kasunich wrote:
Gene Heskett wrote:
Greetings guys;
I edited the ini file and slowed the A axis down to 10%, or maxvel=7.2,
with corresponding slowdowns in the accel's too. and I added another 9 in
front of its limits so it can now turn 99,999 degrees.
Then
Gene Heskett wrote:
I didn't time it John, but that sounds about right. I was up to my buns in a
different pool of alligators, the inner filament contact for a final tube in
a tv transmitter had left it running itself while I went looking for some
silver braze rod. The only thing I
Craig Muller wrote:
Hi All
I Previously had emc installed via the BDI I have recently tried to
upgrade to emc2,2 . I downloaded the ISO and cut it to a disc seemingly
without a hiccup. I can boot my machine using the live cd however when I
try to install the software the
On Wednesday 16 April 2008, John Kasunich wrote:
Gene Heskett wrote:
I didn't time it John, but that sounds about right. I was up to my buns
in a different pool of alligators, the inner filament contact for a final
tube in a tv transmitter had left it running itself while I went looking
for
Kirk Wallace wrote:
The IA and IB sink the LED's on two optocoupler inputs each. The high
side of the LED's is driven by the Q and /Q quadrature signals. I am
guessing this forms a NAND function or an Inhibit? I wonder if the
inhibits are needed to prevent shoot-through? If that is the case
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