As a PC tech, I've seen several older Compaqs, especially laptops do as you
describe.
Sometimes they will freeze for seconds at a time then continue.
And with a freshly and properly installed OS with good drivers, etc.
I know this isn't what you want to hear but consider replacing the machine.
Maybe if a friend has a more 'generic' PC and likes the iPaq, y'all could
trade.
Someone surfing the net and doing email wouldn't be as endangered as someone
using it to control a machine with strong electric motors and sharp cutters
;^)
I'm using an IBM Netvista found in a dumpster. Due to its small size (what
we call
a laptop-in-a-box), I expected similar behaviour. It's a Celeron 800/256MB
but it
runs EMC without a hitch. Maybe check junk/second-hand stores, too.
Sorry I couldn't be of more help,
Emory
On Sat, Jun 21, 2008 at 7:00 AM, John Thornton <[EMAIL PROTECTED]> wrote:
> On 20 Jun 2008 at 21:59, Jack wrote:
>
> > I have EMC2 installed on an old Compaq iPaq desktop running Ubuntu
> > 6.06 from
> >
> > the EMC2 install CD, driving a HobbyCNC controller and gantry with
> > Kirk lead screws.
> >
> > When I use the sample stepper_inch config it works, but I need to
> > tweak the configuration some to change the stepping (thread pitch,
> > etc) but when I try to generate my own using the config tool in Axis,
> > it just doesn't work.
> >
> > Suggestions?
>
> I'm not sure what the config tool is in Axis but if you use the EMC
> stepconf wizard
> you should be able to make a new config and test each axis as you go. If
> you are
> using the stepconf wizard then you need to be more specific as to what you
> did,
> what you expect to happen and what happens.
>
> Hobbycnc does not provide clear information on step timing the best we have
> is
> here.
>
> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Stepper_Drive_Timing
>
>
> >
> > I figure this is probably something dumb I am doing, and I am willing
> > to RTFM, I just need some direction.
> >
> > With the sample config, it is jogging back and forth OK, but it is not
> > set for the right threads per inch for the lead screws.
> >
> > Once I get this working, next comes home and limit switches and a
> > hardware emergency switch.
> >
> > The latency test runs, but if I do try to use the computer, sometimes
> > the numbers go out of sight. 'Normally' it runs about 15000. When it
> > goes 'crazy' It reads over a million. My 500MHz celeron may be to
> > slow, but it is what I am playing with for now.
> >
> > Thanks. ... Jack
>
> If you have an onboard video sometimes that will give you problems.
>
> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?TroubleShooting
>
> When the computer "goes crazy" don't expect the machine to remain uncrazy!
>
> John
>
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--
Emory Smith
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