Re: Re: Re: Stepper program w/Encoders?

Bertho,
You are of course correct... distance it is...

Well I don't care much for Linux, this forum alone is proof enough to
keep me away from it... perhaps if there was one version, it would be
tolerable. Yes I have read the arguments for Linux, but it does not make
sense to punish oneself. That's why I never bothered with OS/2...

As I see it, getting the timing requirements out of the PC and into a
microcontroller is a far better solution, then the "link" does not
really mater. I would prefer using USB... does Linux support USB..?

Hans Wedemeyer


Bertho Boman wrote:

> Hi Hans,
>
> I do not see a good reason to confuse things with backlash TIME. It
> is really a DISTANCE that must be added to travel when you
> change direction on an axis. If you call it time, it must
> continuously be changed because feed rates vary. It is easy to say
> that there is 15 mil backlash on Y and 23 mils on X. I think everyone
> will understand that without any confusion.
>
> Oh by the way, take cover and put on a flame proof suit. I can just
> hear the Linux guys gasping for air.
>
> I am hoping for an NT version also so I do not have to go through the
> headaches of the learning cycle and to maintain an other
> system. The basic problem is that there must be a real time kernel
> and the one that I have seen for NT is very expensive.
> Rumor has it that there is a "free" one available but I have not seen
> any details. So it looks like I have to bite the bullet
> and get a Linux system up and running.
>
>
> > From: hansw <hansw@...>
> > I'm new to CNC also, by dead time I mean the time (= number of turns
> > needed) to move the tables when reversing direction.. As an example.
> > If it required (large number for example) 200 turns to move the
> table in
> > the opposite direction, it should be possible for the uP to figure
> this
> > out, because you mentioned (I think) the use of a DRO as input...
> > ---------> Snip
>
>
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