On Friday 13 December 2013 18:17:43 andy pugh did opine:
> On 13 December 2013 19:14, Gene Heskett wrote:
> >> My homing uses resolver index. The problem is that I get following
> >> errors even when MIN_FERROR is 60 degrees. And I see that resolver
> >> position feedback signal makes a step when
On 12/13/2013 2:53 PM, Andrew wrote:
> 2013/12/13 Charles Steinkuehler
>
>> using lightdm fixes the shutdown/reboot buttons too.
>
> Yes, I just forgot to mention it.
> What other changes expected in the next Machinekit?
General updates to the kernel and the Debian install (this is already
avai
2013/12/13 Charles Steinkuehler
> using lightdm fixes the shutdown/reboot buttons too.
Yes, I just forgot to mention it.
What other changes expected in the next Machinekit?
Andrew
--
Rapidly troubleshoot problems befor
On 12/13/2013 2:13 PM, Andrew wrote:
> 2013/12/4 Charles Steinkuehler
>
>> Please try the following. At a command prompt run:
>>
>> sudo aptitude install lightdm
>>
>> When prompted to pick a default display manager, choose lightdm instead
>> of xdm. Once everything is installed, reboot and s
2013/12/4 Charles Steinkuehler
> Please try the following. At a command prompt run:
>
> sudo aptitude install lightdm
>
> When prompted to pick a default display manager, choose lightdm instead
> of xdm. Once everything is installed, reboot and see if your USB issue
> is fixed.
>
I just made
That's a good point: the radius affects the tool path error in a way that
we can't predict from G-code alone. It would be straightforward to do G64
with no tolerance, though, but I don't know how useful a
half-implementation like that would be.
On Fri, Dec 13, 2013 at 2:59 PM, andy pugh wrote:
On 13 December 2013 19:14, Gene Heskett wrote:
>> My homing uses resolver index. The problem is that I get following
>> errors even when MIN_FERROR is 60 degrees. And I see that resolver
>> position feedback signal makes a step when homing.
>
> Yikes. I know little to zip about resolvers, only t
On 13 December 2013 18:51, Robert Ellenberg wrote:
> I spent some time going through the math behind it, and I think blending
> between linear moves with ABCUVW motion is feasible,
One big problem is that G-code has no way to define the location of
centres of rotation.
(I don't know if that matt
On Friday 13 December 2013 13:50:44 Marius Alksnys did opine:
> 6 axis articulated robot. Its 5th and 6th joint motion is transferred
> from servo motor to the end by belts. Controlling 1-5 joints is trivial,
> but 6th one has to be offset by 5th position.
>
> This means you have to rotate both 5
I spent some time going through the math behind it, and I think blending
between linear moves with ABCUVW motion is feasible, though it will take a
a bunch of new data structures to store a 9D vector.
There are two big challenges to making this work. The first is implementing
a new way to interpol
On 12/13/13 07:42 , Marius Alksnys wrote:
> 6 axis articulated robot. Its 5th and 6th joint motion is transferred
> from servo motor to the end by belts. Controlling 1-5 joints is trivial,
> but 6th one has to be offset by 5th position.
>
> This means you have to rotate both 5th and 6th motors equa
2013/12/13 Marius Alksnys
> 6 axis articulated robot. Its 5th and 6th joint motion is transferred
> from servo motor to the end by belts. Controlling 1-5 joints is trivial,
> but 6th one has to be offset by 5th position.
>
> This means you have to rotate both 5th and 6th motors equally to move
>
6 axis articulated robot. Its 5th and 6th joint motion is transferred
from servo motor to the end by belts. Controlling 1-5 joints is trivial,
but 6th one has to be offset by 5th position.
This means you have to rotate both 5th and 6th motors equally to move
only 5th joint.
( BTW, this is the
On Friday 13 December 2013 09:07:06 Gregg Eshelman did opine:
> On 12/12/2013 3:26 PM, Leonardo Marsaglia wrote:
> > 2013/12/11 Dave Cole
> >
> >> It sounds like you are greatly simplifying the machine. An MG set
> >> (motor generator set) is a very old technology to create DC power.
> >> That
On 12/12/2013 5:48 PM, Leonardo Marsaglia wrote:
> 2013/12/12 Gene Heskett
>
>> I expect you can, but the heat method, where the screw is clean & has a
>> coat of mineral oil on it prevent the acetal/delrin from sticking to a dry
>> surface, gives you a thread that is about 40x more precise a fit
On 12/12/2013 3:30 PM, Leonardo Marsaglia wrote:
> Greg and Gene (this is to avoid quoting a lot of text because you were
> talking about the same thing)
>
> I saw what the common process to make pieces out of a Delrin and Acetal is
> to mold them with heat. I'm not familiar with this kind of mater
On 12/12/2013 3:26 PM, Leonardo Marsaglia wrote:
> 2013/12/11 Dave Cole
>
>> It sounds like you are greatly simplifying the machine. An MG set
>> (motor generator set) is a very old technology to create DC power. That
>> was probably obsolete when it was installed.
>>
>> Yes indeed, I really don
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