Jeffrey Pease wrote:
I have no explanation for why this glitch is occurring in these
spots,
and no real idea how to fix it. Any ideas?
My machine is using steppers and lead screws. Running EMC2 on Ubuntu
8.04.
Sebastian Kuzminsky wrote:
Which
not doing anything
special for backlash in software.
Thanks,
Jeff
Jeffrey Pease wrote:
Hi EMC,
I'm tuning my machine, and I am having some weird problems with the
EMC spiral example. This issue is entirely repeatable, and seems to
happen without fail regardless of any feed rate
Hi Brian,
As Dave noted, you are approaching the point on the spiral where the
movement on a given axis is at a minimum. With the full step and a
low
thread count, you might be encountering a detent on the motor perhaps?
Bingo, I think that nailed it. I was running 5 tpi lead screws at
Hi EMC,
I'm tuning my machine, and I am having some weird problems with the
EMC spiral example. This issue is entirely repeatable, and seems to
happen without fail regardless of any feed rate, acceleration or speed
settings that I have tried.
What happens is on a particular place in every
Just wanted to thank everybody for all the excellent feedback. At the
moment I'm leaning towards this being a cable shielding or grounding
issue with my driver board (as suggested first by, I believe James
Reed). I have had suspicions that I had some sort of grounding problem
for a while,
Thanks for everyone's responses. I get a digest version of the mail
list responses, so I'll go ahead and reply to everybody's at one time.
Robert:
I haven't spent much time messing with halscope, but I'm not sure how
to best use it here given the intermittent nature of the problem.
I am working on tuning my homebuilt HobbyCNC machine with EMC 2.3. I
am using the HobbyCNC EZ driver board to interface with my PC. I have
things working, but am working on tweaking the ini settings to get as
high of feedrate as I can reliably.
One mysterious issue I've seen that I'm trying
