On 12 Feb 2008 at 18:03, [EMAIL PROTECTED] wrote:
EMC can do PID just fine. It's steppers that can't. Steppers lose
torque as the speed increases. There is no way around this, it's just
the physics of the motor.
Did someone rewrite the spec for PID?
used to be a way of correcting a
[EMAIL PROTECTED] wrote:
On 12 Feb 2008 at 18:03, [EMAIL PROTECTED] wrote:
EMC can do PID just fine. It's steppers that can't. Steppers lose
torque as the speed increases. There is no way around this, it's just
the physics of the motor.
Did someone rewrite the spec for PID?
Am 13.02.2008 um 11:41 schrieb [EMAIL PROTECTED]:
On 12 Feb 2008 at 18:03, [EMAIL PROTECTED]
wrote:
EMC can do PID just fine. It's steppers that can't. Steppers lose
torque as the speed increases. There is no way around this, it's
just
the physics of the motor.
Did someone
On Wed, 13 Feb 2008, Dave Engvall wrote:
EMC can do PID just fine. It's steppers that can't. Steppers lose
torque as the speed increases. There is no way around this, it's
just the physics of the motor.
PID loop will attempt to correct for a lagging motor by requesting
more effort
[EMAIL PROTECTED] wrote:
On 12 Feb 2008 at 18:03, [EMAIL PROTECTED] wrote:
EMC can do PID just fine. It's steppers that can't. Steppers lose
torque as the speed increases. There is no way around this, it's just
the physics of the motor.
Did someone rewrite the spec for PID?
No.
Kirk Wallace wrote:
I think Tormach has a fairly compelling argument for steppers here:
http://www.tormach.com/document_library/TD30204_DesignAnalysis.pdf
Starts on page seven, though I think the whole document is worth while.
Second that - I read the whole thing a few weeks ago. Its
With the experience I have gained so far, it leads me to believe that
you are making choices that may make your quest more difficult. If you
are trying to have a CNC machine to make parts and spend as little as
appropriate for that end, then you should consider studying other
machines that
On Tue, 2008-02-12 at 13:39 +, [EMAIL PROTECTED] wrote:
Just a quickie.
Can anyone recommend a UK supplier of stepper motors and associated drive
electronics?
eg just add mill, and computer running EMC.
Mill is a light / middleweight Pinnacle universal job, XYZ travels are 400,
On Tue, 2008-02-12 at 22:42 +, [EMAIL PROTECTED] wrote:
With the experience I have gained so far, it leads me to believe that
you are making choices that may make your quest more difficult. If you
are trying to have a CNC machine to make parts and spend as little as
appropriate for
[EMAIL PROTECTED] wrote:
http://www.arceurotrade.co.uk/Catalogue/Stepper-Motors
The 180Ncm will be big enough, and at ?18.50 at the moment ...
The 3 Amp driver at ?28.95 each are a good option for driving them, so for
under ?150 you have all the grunt.
They will run direct off the parallel
http://www.arceurotrade.co.uk/Catalogue/Stepper-Motors
The 180Ncm will be big enough, and at ?18.50 at the moment ...
The 3 Amp driver at ?28.95 each are a good option for driving them, so for
under ?150 you have all the grunt.
They will run direct off the parallel port, but a simple
http://www.arceurotrade.co.uk/Catalogue/Stepper-Motors
The 180Ncm will be big enough, and at ?18.50 at the moment ...
The 3 Amp driver at ?28.95 each are a good option for driving them, so for
under ?150 you have all the grunt.
They will run direct off the parallel port, but a simple
[EMAIL PROTECTED] wrote:
Just a quickie.
Can anyone recommend a UK supplier of stepper motors and associated drive
electronics?
eg just add mill, and computer running EMC.
Mill is a light / middleweight Pinnacle universal job, XYZ travels are 400,
180, 150 mm with
quill head having
I got mine from at the model engineer ex
http://www.arceurotrade.co.uk/Catalogue/Stepper-Motors in Leicester
and seems they have some even cheaper since I bought mine
Dave Caroline
archivist on #emc FreeNode
-
This SF.net
Just a quickie.
Can anyone recommend a UK supplier of stepper motors and associated drive
electronics?
eg just add mill, and computer running EMC.
Mill is a light / middleweight Pinnacle universal job, XYZ travels are 400,
180, 150 mm with
quill head having separate raise / lower facility and
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