Re: [Emc-users] usb parallel port possible?

2006-12-30 Thread Mario .
no.
categorically NO to anything that needs the Microsoft form of
enumeration process.
It adds too much possible delays of any kind and little to no realtime
guarantees.

OK, that was my OPINION, but in reality it might be useful, but you
may sometimes observe all of the above. USB was not designed for
anything with the so-called direct access. I simply dislike the idea.

On 12/30/06, Chris Morley [EMAIL PROTECTED] wrote:


 Greetings.

 I was looking through my collection of parts and pieces and found an USB to
 parallel  port adapter (for a printer). I was wondering if it would be
 possible to use it to control relays etc with Hal. I am sure that a driver
 would need to be coded and a hal module  ( unfortunately a little above my
 skills yet). What do you guys think?

 Chris Morley
 
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[Emc-users] manual tool change

2006-12-30 Thread Len Shelton
I have been unable to locate:

 

axis_manualtoolchange.hal

 

Any ideas about where I could find it? I have updated to the latest version
via Ubuntu's package manager, and I have searched the hard drive for it.

 

Thanks.

 

Len

 

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Re: [Emc-users] usb parallel port possible?

2006-12-30 Thread Jeff Epler
When emc uses a parallel port to send step and direction signals to a
stepper motor driver, the signals must be received by the driver at
precise intervals measured in microseconds.  This is perfectly possible
with most built-in or PCI-slot parallel ports, but it is simply not
possible with a USB parallel port.

On the other hand, if you wish to control things that work at a long
timescale, like relays, it would be possible.  Personally, I would
recommend writing a userspace (as opposed to realtime) driver, because
then you can use the normal Linux kernel drivers for USB devices.

Jeff

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Re: [Emc-users] manual tool change

2006-12-30 Thread Jeff Epler
The manual toolchange program is a part of the upcoming emc 2.1.0, and
isn't in emc 2.0.5 or earlier.

I hope that we'll soon have an easy-to-install alpha release of emc
2.1.0, but for now if you want to try out the newest features, you can
do it by compiling from source.

http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Installing_EMC2#On_Ubuntu_5_10_and_6_06_from_source

http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Installing_EMC2#Getting_the_source_with_CVS

http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?UpdatingConfigurationsForDevelopmentVersions

When doing the CVS checkout you would use the v2_1_branch:
export CVS_RSH=ssh
cvs -z5 -d:ext:[EMAIL PROTECTED]:/cvs co -rv2_1_branch -demc2.1 emc2

Once you have emc2.1 compiled from CVS, you can see how the 'manual
toolchange' component works by running configs/sim/axis.ini and changing
tools.  Or you can copy configs/common/axis_manualtoolchange.hal into
your own configuration directory, and make it one of the [HAL]HALFILEs
that is loaded when you run emc2.1.

Jeff

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[Emc-users] Halui emc2 2.0.5

2006-12-30 Thread Dino Del Favero
Hi all,
I have to run the g-code program by closing a switch connected to pin 10 of
parallel port, I have try halui but in emc2.0.5 do not work (halui), any
idea? other way?

Thank
Dino


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