Hello Kirk,
I don't see why you should not be able to measure your mains phases with
an ordinary oscilloscope, set up as usual. At least in this country, the
three phases of mains current are ground referenced, 230 V effective
voltage to neutral. Between the phases, as can be figured with a
tri
On Tuesday, March 15, 2011 11:29:43 PM Kirk Wallace did opine:
> On Tue, 2011-03-15 at 21:23 -0400, gene heskett wrote:
> > On Tuesday, March 15, 2011 09:20:25 PM Roland Jollivet did opine:
> > > What about using a few mains>>9V transformers. Then you can common
> > > the secondaries. Sure, they'l
On Tue, 2011-03-15 at 22:08 -0400, gene heskett wrote:
> On Tuesday, March 15, 2011 10:06:08 PM Kirk Wallace did opine:
>
> > On Tue, 2011-03-15 at 11:18 -0700, Peter C. Wallace wrote:
> > ... snip
> >
> > > A couple isolation/stepdown transformers is a good way
> > > (I was going to say filament
On Tue, 2011-03-15 at 21:23 -0400, gene heskett wrote:
> On Tuesday, March 15, 2011 09:20:25 PM Roland Jollivet did opine:
>
> > What about using a few mains>>9V transformers. Then you can common the
> > secondaries. Sure, they'll all be phase shifted, but you should be able
> > to see what's goin
On Tuesday, March 15, 2011 10:06:08 PM Kirk Wallace did opine:
> On Tue, 2011-03-15 at 11:18 -0700, Peter C. Wallace wrote:
> ... snip
>
> > A couple isolation/stepdown transformers is a good way
> > (I was going to say filament transformer but I guess not many would
> > know what that is anymore
On Tuesday, March 15, 2011 09:57:10 PM BRIAN GLACKIN did opine:
> I forgott o mention. Check out Woodgears.ca for his tenoning jigs -
> lots of good stuff there.
>
Yup, but he also has a decent table saw, where mine is a Ryobi BT-3000 I've
covered with formica, and equipt with a 'Shark Fin' (I
I had this problem on my mill that has a D510 board in it. I have not had the
error pop up since disabling hyper threading in bios and adding isolcpus to the
boot file. FWIW...
-Tom
On Mar 15, 2011, at 3:22 PM, Joel Jacobs wrote:
> Hi,
> Is there any way to adjust the sensitivity or suppress
On Tuesday, March 15, 2011 09:20:25 PM Roland Jollivet did opine:
> What about using a few mains>>9V transformers. Then you can common the
> secondaries. Sure, they'll all be phase shifted, but you should be able
> to see what's going on, and I think you'll see spikes or whatever in
> the waveform
On Tuesday, March 15, 2011 08:46:44 PM Kirk Wallace did opine:
> In order to investigate three phase issues more, it would be nice to
> measure at least two waves at a time. I have a two channel scope, but
> the channels are ground referenced. I can float the scope, but I think
> this will only al
Thanks for the suggestions!
Running the latency test program seemed to top out around 15us which I
was quite pleased with but never ran the test more than 10 min or so.
I have bios power management and screen saver disabled. Just read
about the SMI thing in the wiki and I would like to do some te
On Tue, Mar 15, 2011 at 03:51:55PM -0500, forget color wrote:
> I'm controlling axis via emcrsh. It is not uncommon for me to rack up
> hundreds of G1 moves (as well as many more G0) throughout a session.
> I have found that the live plot in Axis will occasionally lose chunks
> of what it has draw
I'm controlling axis via emcrsh. It is not uncommon for me to rack up
hundreds of G1 moves (as well as many more G0) throughout a session.
I have found that the live plot in Axis will occasionally lose chunks
of what it has drawn, seemingly at random, but apparently only after
it has been going fo
Kim's first answer is on the right track for me. I'm calculating all
of the moves outside of EMC2 and passing them via emcrsh to Axis, one
at a time. So I can't use the built-in viewer to know. Basically I
need a formula that will tell me if the arc will go out of bounds
given the things I alrea
On Tue, 2011-03-15 at 11:18 -0700, Peter C. Wallace wrote:
... snip
> A couple isolation/stepdown transformers is a good way
> (I was going to say filament transformer but I guess not many would know what
> that is anymore)
>
>
> Peter Wallace
> Mesa Electronics
Thanks Peter, Roland, Rafael, Jo
I forgott o mention. Check out Woodgears.ca for his tenoning jigs - lots of
good stuff there.
On Tue, Mar 15, 2011 at 1:32 PM, BRIAN GLACKIN wrote:
>
>> How did you go about mounting it to your rig, Brian?
>>
>> I mounted mine using three pieces of 3/4" MDF
>
> Two had a slot cut to fit the shaf
On 03/15/2011 12:16 PM, Kirk Wallace wrote:
> In order to investigate three phase issues more, it would be nice to
> measure at least two waves at a time. I have a two channel scope, but
> the channels are ground referenced. I can float the scope, but I think
> this will only allow me to measure on
Hi,
I've finally have success implementing a Virtual machine, with 3 axes
and a given dynamics.
I've modified hal_motenc.c to that end.
I would like to rename that file so that is compatible with the emc2
distro.
How/Where should I change the compilation toolchain to get automagically
my hal_m
Thanks,
I seen that functions that are put in a thread, have
function(..., long period);
as a argument.
I'm taking this an it works if assumed that the given period is in
seconds.
Thanks for the clue,
Javier
On Mon, 2011-03-14 at 18:45 +, andy pugh wrote:
> On 14 March 2011 17:56, jros
Look around in your junk box to see if you have any 120 ac to low
voltage ac charging transformers for your battery powered drills,
saws, garden clippers etc. The secondary voltage isn't an issue as
you are looking at phase BUT.. make sure they are AC secondary of course.
I have found that
On Tue, 15 Mar 2011, Joel Jacobs wrote:
> Date: Tue, 15 Mar 2011 15:22:04 -0400
> From: Joel Jacobs
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: emc-users@lists.sourceforge.net
> Subject: [Emc-users] unexpected realtime delay
>
> Hi,
> Is there any way to adjust the sensitivity o
You can start with:
1) disabling the hyperthreading and
2) dedicating one of Atom's cores to EMC (and other RTAI functions) by
adding "isolcpus=1" to grub
Unfortunately I cannot explain in more detail, how exactly to do it,
so I can only advice asking uncle google.
Viesturs
2011/3/15 Joel Jacobs
On 03/15/2011 11:18 AM, Peter C. Wallace wrote:
> On Tue, 15 Mar 2011, Kirk Wallace wrote:
>
>> Date: Tue, 15 Mar 2011 11:16:18 -0700
>> From: Kirk Wallace
>> Reply-To: "Enhanced Machine Controller (EMC)"
>>
>> To: "Enhanced Machine Controller (EMC)"
>> Subject: [Emc-users] Floating Oscillosc
Hi,
Is there any way to adjust the sensitivity or suppress this error? I
have an Atom D525 running the latest EMC2 from the repositories
(Ubuntu 10.04). I have a Mesa 7I43 and Gecko 320 servo drives. I
have no base thread at all, just the servo thread running at 700us. At
1ms I would get random
On Tue, 2011-03-15 at 05:33 -0400, Mark Wendt wrote:
... snip
> > I have a shell script called config_modio that contains:
> > "
> > cd /home/kwallace/emc2/homann/modio_config
> > halrun -I h_modio_config.hal
>
> Make sure there's no CR/LF after the h_modio_config.hal. If that
> doesn't fix it,
What about using a few mains>>9V transformers. Then you can common the
secondaries. Sure, they'll all be phase shifted, but you should be able to
see what's going on, and I think you'll see spikes or whatever in the
waveform with a cutoff at about 400Hz.
Regards
Roland
On 15 March 2011 20:16, Ki
On Tue, 15 Mar 2011, Kirk Wallace wrote:
> Date: Tue, 15 Mar 2011 11:16:18 -0700
> From: Kirk Wallace
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: [Emc-users] Floating Oscilloscope
>
> In order to investigate three phase issues more
In order to investigate three phase issues more, it would be nice to
measure at least two waves at a time. I have a two channel scope, but
the channels are ground referenced. I can float the scope, but I think
this will only allow me to measure one signal, or two if they happen to
have the same ref
>
>
> How did you go about mounting it to your rig, Brian?
>
> I mounted mine using three pieces of 3/4" MDF
Two had a slot cut to fit the shaft of the spindle. I also put notches in
the inner curve where the casting lines on the spindle would meet the slot.
The third piece acts as a guillotine
On Tuesday, March 15, 2011 10:38:17 AM BRIAN GLACKIN did opine:
> weight. HF also has a die grinder that might work too. I'll go look
>
> > again.
>
> I use HF's Long Shaft Die Grinder for $24.99 (on sale with 20% off
> coupon). If you go this route, check the collet end as some can have
> al
On Tuesday, March 15, 2011 10:27:07 AM andy pugh did opine:
> On 15 March 2011 04:32, gene heskett wrote:
> > I knocked that elderly B&D apart tonight, far enough to see that it
> > only needs the bearing on the chuck end of the shaft, but the collet
> > is really a trashy collet, so if I follow
On Tuesday, March 15, 2011 09:49:41 AM andy pugh did opine:
> On 15 March 2011 04:32, gene heskett wrote:
> > I knocked that elderly B&D apart tonight, far enough to see that it
> > only needs the bearing on the chuck end of the shaft, but the collet
> > is really a trashy collet, so if I follow
If you look at the last two pictures of this boring head:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=26077389
Wohlhaupter call it a differential screw. I assume this means that it
has two different thread pitches, though it could mean that there are
LH and RH sections.
In either cas
weight. HF also has a die grinder that might work too. I'll go look
> again.
>
I use HF's Long Shaft Die Grinder for $24.99 (on sale with 20% off coupon).
If you go this route, check the collet end as some can have along of play.
I currently have 2 of these (for 1/4" and 1/8" collets). The coll
(Googles)
Hmm, Pretty.
Interesting that most people square-up cubes on a mill, whereas even
with a mill I prefer to do it with a lathe and a 4-jaw chuck (because
of the 2-way square clamping)
--
atp
"Torque wrenches are for the obedience of fools and the guidance of wise men"
-
On 15 March 2011 04:32, gene heskett wrote:
> I knocked that elderly B&D apart tonight, far enough to see that it only
> needs the bearing on the chuck end of the shaft, but the collet is really a
> trashy collet, so if I follow that idea, I may as well start by making my
> own shaft to take a de
On 03/14/2011 06:16 PM, Kirk Wallace wrote:
> On Mon, 2011-03-14 at 12:22 -0400, Mark Wendt wrote:
>> On 03/14/2011 12:20 PM, Kirk Wallace wrote:
>>> On Mon, 2011-03-14 at 05:37 -0400, Mark Wendt wrote:
>>> ... snip
Are you already starting it from a launcher on the desktop?
>>> ... snip
>>
EMC only checks if the endpoints are outside the work envelope, not
intermediary points on the arc.
You can still load the program and look outside the bounds (if set up
properly you see the extent of travel in the preview).
Regards,
Alex
> Or, can you just let EMC check it for you?
> If you se
Or, can you just let EMC check it for you?
If you set the work envelope of your machine correctly,
EMC will tell you if there are problems.
"Program exceeds machine limits"
"Program exceed machine (max/min) on axis (X/Y/Z/A/B/C/U/V/W)"
" [ Run Anyway ] [ Cancel ] "
And if you're using "
You probably want to find the arc center first.
This should help:
http://www.google.com/search?hl=en&source=hp&biw=1920&bih=934&q=find+the+center+of+an+arc+from+two+points&aq=f&aqi=g4g-m4&aql=&oq=
The first reference isn't bad.
Once you have the center, then it's easier to check around
the circ
this is more of a math question than an EMC question, but I need the
question for EMC so thought someone else might have run into it.
I'm trying to figure out how I can calculate whether an arc will go
outside the working area of my CNC. Let's say I have an arc from the
following parameters:
x1,
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