Hi Vasile,

Yes, but that mean to use an old computer with LPT port - I can use it
with TurboCNC, CNCPro or EMC... But I wanted something for everyone,
considering that the parallel port is rare these days. So, it had to
be an USB "machine". But for this, I must modify the source of CNCPro
(Public Domain) to work with my firmware... again, I had no time for
it.

Yes, is hard to make precision mechanics for it, specially when you
don't have the right tools. But with an acceptable router you can make
a little better one and so on, until you have what you want.

I have a little dilemma, about how to power my steppers... what
voltage they need... and another dilemma about how much time a stepper
coil can be maintained connected to the power (I must use only pulses
for short time, or I need to keep them continuously powered to
maintain their position?)...

On Nov 20, 6:49 pm, vasile surducan <[email protected]> wrote:
> On Sat, Nov 20, 2010 at 6:27 AM, funlw65(Vasi) <[email protected]> wrote:
> > Hi Sebastien,
>
> > :), yes, I need another microcontroller to listen the PC sounds, maybe
> > a DSP which mean Kyle must start working for supporting those
> > microcontrollers. :D
>
> > It never worked for me on 18F2550... never tried his big brother, had
> > no time, maybe this winter. If you go on this page,
>
> >https://sites.google.com/site/funlw65/tutorials/jal-projects/the-usb-...
>
> Hi Vasi,
>
> Interesting way...
> Did you consider using a ready to use CNC software and a simple stepper
> driver ( LPT) without any microcontroller?
> The biggest problem on CNC is mechanics...
>
> Vasile
>
>
>
>
>
> > you will see a comment in the source about that, addressed to
> > Albert... but because it worked without, and my firmware never needed
> > special confirmation, I never reported. Now it is possible to be also
> > Toon's problem (as I understand, he tried it under 18F2553?). I tried
> > it mostly under Vista, SuSE Linux and Ubuntu Linux.
> > On dmesg, never special, I mean, it is displaying a recognized and
> > connected device. Nothing else. But that loop it freeze my
> > microcontroller.
>
> > Vasi
>
> > On Nov 20, 1:59 pm, Sebastien Lelong <[email protected]>
> > wrote:
> > > hi Vasi,
>
> > > 2010/11/20 funlw65(Vasi) <[email protected]>
>
> > > > Hi Matt,
>
> > > > On Nov 20, 6:23 am, mattschinkel <[email protected]> wrote:
> > > > > Then how would your program know if the usb port is connected?
>
> > > > That is easy, Windows is emitting some funny sounds and in Linux you
> > > > see that using dmesg and this way "I" know. Then, my firmware react on
> > > > PC software host... or, if is about sending data continuous, the start
> > > > is marked some how for the software host.
>
> > > So, do you need another board that checks these sounds etc... in order
> > the
> > > other to know the other can send/receive data ? :)
>
> > > More seriously, the PIC has to know when connection is available, in a
> > > programmatical way.
> > > I wasn't aware you had this problem. This is pretty weird, and knowing a
> > > (very) little about Albert's way of programming, I'm quite sure he did
> > put
> > > this line for a specific purpose.
>
> > > As I said, there may be a problem while PC host is configuring the USB
> > > device. What does dmesg says (full log from pluging, configuring, comm,
> > to
> > > unpluging) ?
>
> > > > Toon reported that is not working and didn't worked also for me... how
> > > > you will react on that? I got stuck on the same loop and program
> > > > worked without that so I never used since then (it is an old issue,
> > > > what libs are you using now?). I think I remember Sebastien said
> > > > something about that... but I may be wrong.
>
> > > I think this was about AT chars under Linux kernel < 2.6.32. Not related
> > to
> > > the line status.
>
> > > Cheers,
> > > Seb
>
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