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
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:
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 become
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 shoot
On 22 November 2010 11:57, Erik Christiansen dva...@internode.on.net 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
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 LG 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 a
Il 22/11/2010 12:26, Andy Pugh ha scritto:
On 22 November 2010 10:50, Spiderdab77...@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
2010/11/22 Andy Pugh a...@andypugh.fsnet.co.uk:
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
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
Il 22/11/2010 15:40, Andy Pugh ha scritto:
On 22 November 2010 14:23, Spiderdab77...@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
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 still supply
On 22 November 2010 15:34, Viesturs Lācis viesturs.la...@gmail.com 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
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 knbr...@erols.com wrote:
On 11/13/2010 5:59 AM, Andy Pugh wrote:
On 13 November 2010
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 the same
Il 22/11/2010 15:40, Andy Pugh ha scritto:
On 22 November 2010 14:23, Spiderdab77...@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
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:
On 22 November 2010 16:50, gene heskett ghesk...@wdtv.com 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:
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
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 in
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
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
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.html
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 like you
that is the gcode program
On Mon, Nov 22, 2010 at 7:02 PM, Kirk Wallace
kwall...@wallacecompany.comwrote:
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?:
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
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 ch...@timeguy.com wrote:
On Mon, Nov 22, 2010 at
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
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 and
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 modify
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
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
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't know what's
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 grid
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