A cheap USB GPS can be used to extract the time off the satellite signal.
Easier to interface to than a Walmart Atomic clock.
I have a couple of those "Atomic" clocks and they sometimes get confused.
Dave
On 11/23/2010 12:11 AM, Don Stanley wrote:
> Hi All;
> My next project is a remote off gri
Wow.. If you look closely it appears he has at least a couple of
different taps on that transformer also!
Dave
On 11/22/2010 10:31 PM, Kirk Wallace wrote:
>> Perhaps you have a bad welding lead connection/bad ground or the voltage
>> output is too low?
>>
>> Thanks,
>>
>> Dave
>>
> I don
Do you have internet access at the site?
If you are running an PC for EMC, you can use NTP to keep
the PC's clock synced to the rest of the world, and some HAL
bits and pieces to keep the generator synced to the PC
clock. EMC's encoder component could easily count 60Hz.
On Tue, 23 Nov 2010 00:1
Hi All;
My next project is a remote off grid 60 HZ power unit.
I am thinking of a EMC2 PID to control the RPM.
I am also expecting maybe a 1-2 HZ momentary shift as the
big power loads come on and off line.
I am looking for a method to get a reliable reference that can be used to
average 60 HZ thr
On Mon, Nov 22, 2010 at 09:24:40PM -0600, Stuart Stevenson wrote:
> ugh :) - I was hoping to find the exact geometry to create 5 axis tool path
> for the robot and sharpie - it would be cool to watch the sharpie wiggle and
> still draw straight lines and round circles
It's possible you could modif
> Perhaps you have a bad welding lead connection/bad ground or the voltage
> output is too low?
>
> Thanks,
>
> Dave
I don't know what's wrong, it just not working quite right:
http://www.bunkerofdoom.com/00_misc/welder/index.html
(My hat's off to them, they're making do with what they have a
Our seat of Mastercam has a reverse post to create geometry from gcode but
it is very old and chokes on the axis.ngc gcode program.
thanks
Stuart
--
dos centavos
--
Increase Visibility of Your 3D Game App & Earn a Chance
ugh :) - I was hoping to find the exact geometry to create 5 axis tool path
for the robot and sharpie - it would be cool to watch the sharpie wiggle and
still draw straight lines and round circles
On Mon, Nov 22, 2010 at 9:16 PM, Chris Radek wrote:
> On Mon, Nov 22, 2010 at 05:55:35PM -0600, Stu
On Mon, Nov 22, 2010 at 05:55:35PM -0600, Stuart Stevenson wrote:
> Gentlemen,
> Where would I find the geometry for the EMC2.4/AXIS splash?
> thanks
> Stuart
I generated it with truetype-tracer, and then massaged it by hand to
add the block delete and make it into two lines.
The font I used is
that is the gcode program
On Mon, Nov 22, 2010 at 7:02 PM, Kirk Wallace
wrote:
> On Mon, 2010-11-22 at 17:55 -0600, Stuart Stevenson wrote:
> > Gentlemen,
> > Where would I find the geometry for the EMC2.4/AXIS splash?
> > thanks
> > Stuart
> >
>
> Try?:
>
> /usr/share/axis/images/axis.ngc
> --
>>A single turn, or rather 3/4 turn, is fine.
Good to know.. I will swap it out for a single turn.
>>One problem I have had recently is that I can start an arc easily,
but I get a shower of small arcs and no heat. On the third or
>>fourth start, I finally get a coherent hot spark.
Sounds lik
On Mon, 2010-11-22 at 17:55 -0600, Stuart Stevenson wrote:
> Gentlemen,
> Where would I find the geometry for the EMC2.4/AXIS splash?
> thanks
> Stuart
>
Try?:
/usr/share/axis/images/axis.ngc
--
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/index.h
Gentlemen,
Where would I find the geometry for the EMC2.4/AXIS splash?
thanks
Stuart
--
dos centavos
--
Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
Tap into the largest installed PC base & get m
On Mon, 2010-11-22 at 13:07 -0500, Dave wrote:
> Is a single turn pot ok or does it really need to be a ten turn or
> whatever it is?
A single turn, or rather 3/4 turn, is fine. I just put the ten turn knob
on the replacement to keep from losing it. This potentiometer sets the
range that the remo
Viesturs Lācis wrote:
>
> Actually I had a case, where we were discussing servos vs steppers,
> and the main unanswered question about cost-efficient servo system was
> motors. Can anyone share some source for reasonably priced servo
> motors? I am interested in not-very-powerful motors - somewhere
Is a single turn pot ok or does it really need to be a ten turn or
whatever it is?
Most of the welder I know are very "seat of the pants type" of guys. I
seriously doubt if they ever look at the meters.
Not hot enough turn it up. Too hot.. turn it down. Can't get it hot
enough.. get a dif
On 22 November 2010 16:50, gene heskett wrote:
>> This is a 70V drive:
>> http://www.slidesandballscrews.com/2m880n-microstepping-driver-p-303.html?cPath=44_97
>> And for even more money, this one runs direct from mains
>> voltage input:
>> http://www.slidesandballscrews.com/2m2280n-high-voltage-
On Mon, 2010-11-22 at 10:57 -0500, Dave wrote:
... snip
> I have a Hobart Cyber-TIG also. It works but the current control pot
> on the front needs to be replaced as it is flaky.
I replaced mine with a temporary single turn potentiometer. The original
was intermittent so I took it apart:
http:/
Il 22/11/2010 15:40, Andy Pugh ha scritto:
> On 22 November 2010 14:23, Spiderdab<77...@tiscali.it> wrote:
>
>
>> my stepper motors are these:
>> http://www.goodluckbuy.com/nema-23-stepper-motor-12-6kgcm-1-8degre-4leads-56mm-57bygh56-401a.html
>>
> Those are quite short steppers, there a
On Mon, 22 Nov 2010 17:16 +0100, "Spiderdab" <77...@tiscali.it> wrote:
> Il 22/11/2010 15:40, Andy Pugh ha scritto:
> > steady-state the voltage across the motor will be exactly the same as
> > it is now (about 2.5V). The advantage is that when the motor is
> > spinning rapidly it can still supply
I think that some Intel people are on LKML. One of them could probably help.
If you can't find any email addresses there, maybe grep the kernel source
for @intel
Mark
On Nov 13, 2010 4:41 PM, "Kent A. Reed" wrote:
> On 11/13/2010 5:59 AM, Andy Pugh wrote:
>> On 13 November 2010 01:50, Jeff Epler
On 22 November 2010 15:34, Viesturs Lācis wrote:
> Actually I had a case, where we were discussing servos vs steppers,
> and the main unanswered question about cost-efficient servo system was
> motors. Can anyone share some source for reasonably priced servo
> motors?
I have always wondered if t
On 22 November 2010 16:16, Spiderdab <77...@tiscali.it> wrote:
>> The stepper drive will limit the current to the set value, so
>> steady-state the voltage across the motor will be exactly the same as
>> it is now (about 2.5V). The advantage is that when the motor is
>> spinning rapidly it can sti
Il 22/11/2010 15:40, Andy Pugh ha scritto:
> On 22 November 2010 14:23, Spiderdab<77...@tiscali.it> wrote:
>
>
>> my stepper motors are these:
>> http://www.goodluckbuy.com/nema-23-stepper-motor-12-6kgcm-1-8degre-4leads-56mm-57bygh56-401a.html
>>
> Those are quite short steppers, there a
I've seen something similar in Mig welders also.. although they are
suppose to be constant voltage while TIG and stick is suppose to be
constant current.
I have a Hobart Cyber-TIG also. It works but the current control pot
on the front needs to be replaced as it is flaky.
I have the single
2010/11/22 Andy Pugh :
>
> That's a much more serious proposition, and will need real money.
> Probably around EUR1000 per motor (for a 20Nm 400V AC servo). For
> drives the Mesa 8i20 might be an option, though support in EMC2 is
> still rather experimental.
>
Actually I had a case, where we were
On 22 November 2010 14:23, Spiderdab <77...@tiscali.it> wrote:
> my stepper motors are these:
> http://www.goodluckbuy.com/nema-23-stepper-motor-12-6kgcm-1-8degre-4leads-56mm-57bygh56-401a.html
Those are quite short steppers, there are some about twice as long
with about twice the torque,
> so,
Il 22/11/2010 12:26, Andy Pugh ha scritto:
> On 22 November 2010 10:50, Spiderdab<77...@tiscali.it> wrote:
>
>
>> i would like to know if you know about nema23 motors (either stepper or
>> servo) with more (kind of double..) torque.
>>
> They do exist but might not give you the advantage
For servo drivers, one cheap alternative to professional controls is
this DIY open-source drive, and work with step/dir pulses like stepper
drive :
http://www.max-mod-shop.com/index.php?option=com_content&view=article&id=52:yapscv1&catid=17:-yapsc&Itemid=4
Le lundi 22 novembre 2010 à 11:26 +0
On Sun, Nov 21, 2010 at 01:19:17PM -0500, Tom Easterday wrote:
> I just bought a new D510MO board for a router/plasma table we are
> building. If I install the L&G EMC2 (2.4.5, I think is the latest)
> will EPP mode just work (is the patch in there)? Or do I have to
> enable something and/or load
On 22 November 2010 11:57, Erik Christiansen wrote:
> > there should be a market for wireless temperature/humidity
>> sensors for managing piles.
>
> I see it now, a colour bar graph, ending with a flashing red "PILE CRITICAL"
> display when it's about to catch fire. :-)
> It's a good thing I'm
On Sun, Nov 21, 2010 at 07:40:25PM -0800, Kirk Wallace wrote:
>
> This is like another idea I have had. I have large compost piles that I
> use to process garden and kitchen waste. The piles can be controlled by
> monitoring temperature and adding green material, water and turning the
> pile. I sh
On 22 November 2010 10:50, Spiderdab <77...@tiscali.it> wrote:
> i would like to know if you know about nema23 motors (either stepper or
> servo) with more (kind of double..) torque.
They do exist but might not give you the advantage you expect. My
limited experience is that the bigger motors bec
2010/11/22 Spiderdab <77...@tiscali.it>:
>
> so, the nema23 i'm using are (on paper):rated current 2,8A , 4 wire and
> have a holding torque of 12,6 kgf/cm (175 oz/in).
>
I have Nema23 steppers with rated holding torque 3.0Nm, which, if I am
correct, is 425 oz/in.
I just bought these:
http://www.s
Ciao a tutti.
i've built steel structures for nema23 stepper motor reelers (don't know
if the word is exact, intended a drum to roll a wire on..).
i've 4 of these motors, to setup an inverted tetrapod. (for those who
followed me, i used this to make a volleyball fly in the air...just
artistic pu
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