Hey Ed,
Once upon a time, I wrote some gcode subroutines that, given the ends of
two lines and a radius, makes it into a line, an arc of that radius,
and a line.
If you want to see it, I might be able to locate it.
Regards,
Ken
Ed Nisley wrote:
if Ed will be continuing similar articles in
Hi,
I just got my hands on one of those Teachmover style educational robot
arms.
Obviously I am going to hook it up to EMC as soon as I make/find some
unipolar step drives.
Here is my question, because of the way the motors are hooked to the
joints, as you move a particular joint, the
Peter C. Wallace p...@... writes:
HostMot 5I20 encoder counter. With digital filtering turned on, the maximum
rate is limited to around 4 MHz. Thread rate should be unimportant as well,
especially with the original HostMot since its encoder counters are 32 bits
wide. Have you checked that
Tom wrote:
How do I check to make sure that quadrature filtering is turned on? Is this a
config modparam statement that goes in the ini file?
Can you give an example?
Are you using m5i20 (hostmot) or hm2_pci/hm2_5i20 (hostmot2)? If you're
using hostmot2, you enable encoder filtering in HAL
Once upon a time, I wrote some gcode subroutines
Sure: I'm always interested to find out what I could do
better!
Or at least differently, as I seem to have a lot of code
sitting around that makes me wonder what I was thinking at
the time. Maybe nothing, aye, there's the rub.
Thanks...
--
Dan,
the kinematics of this robot type is quite trivial to solve, this
image should help in figuring it out: http://imagebin.org/33869
The trick is in using substitution (ZR-plane) and putting the center
of the world coordinate system in the rotation centers of the first
and second joints.
On Tue, 2008-12-16 at 22:44 -0600, Len Shelton wrote:
With the method that Ray described with G92.2 and
G92.3, its still several un-necessary steps I think. I mean, what if it is
the first time you run the program? Would you have to set the offsets with
G92 in MDI and then save with G92.2 in
I am using a pyVCP panel in Axis that has a spindle rpm bar, lifted from
Anders Wallins generously provided ini and hal files on his web page here:
http://www.anderswallin.net/category/cnc/emc/
Thus far, I can display 0 to 4000 rpm in a nice steady green bar, but as
the spindle speed
On Tue, Dec 16, 2008 at 11:14 PM, tomp tomp-...@sbcglobal.net wrote:
Brian
the blades are forged or cast ( lotsa hollow passages )
then details are milled or edm'd
the blades are welded together into rings ( even with the fancy tree
locators )
and machined again
there some great sites
Ideas?
Thanks,
Matt
Do you mind testing a new bitfile?
I think I've got it. You will still need some overhead so that the hardware
never limits the rate in normal slewing (maybe 5%).
Peter Wallace
Mesa Electronics
(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
()_()
On Wed, Dec 17, 2008 at 12:14:13PM -0700, Sebastian Kuzminsky wrote:
I'm not sure how the m5i20/hostmot driver handles this...
the old driver simply has this setting hardcoded, and can't chage it
without a recompile. I forget what value is hardcoded, though.
Jeff
On Wed, 2008-12-17 at 19:06 +, Tom wrote:
... snip
What you are pointing out seems to imply that
you are concerned about noise in the lines. It looks like I am going to
physically connect some test pigtails to the 5i20 in the controller so I can
scope what is happening in the signal lines
On Wednesday 17 December 2008, Ray Henry wrote:
(1) What you are describing was addressed when an attempt was made to
allow integrators the ability to set these behaviors by parameter
changes. I've argued for such things for years and a first stab at it
was made by Keith Rumley about three+
OK, this is my hal file again, is the same one that Ted Hyde has posted.
http://pastebin.com/f509e8f08
Greetings, and thanks again
El 16/12/08 14:48, Peter C. Wallace escribió:
How did the DOS testing turn out?
OK... sorry for the delay, but my work is killing me.
Finaly i managed
Sebastian Kuzminsky s...@... writes:
...
Are you using m5i20 (hostmot) or hm2_pci/hm2_5i20 (hostmot2)?
Sebastian,
I am using the m5i20 (hostmot) version at this time.
After talking to Peter on the phone today, it looked as if I might be looking
for a more mundane problem such as noise
Kirk Wallace kwall...@... writes:
If you are using a VFD on your spindle (or coolant pump), having one a
filter on the power input solved my noise problems.
http://www.eastek-intl.com/images/PreoSeriesEB.pdf
http://www.wallacecompany.com/cnc_lathe/HNC/00024-1a.jpg
If not, using a
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