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Re: USB rotor interface?



It looks like the best candidate I have seen.  Too bad it costs more than
twice what the parts to build a FODTrack do.  Still it is mighty tempting.

73,
Joe
ka0yos@amsat.org

----- Original Message -----
From: "Mike Branda" <mbranda@yahoo.com>
To: <amsat-bb@AMSAT.Org>
Sent: Friday, August 02, 2002 6:34 PM
Subject: Re: [amsat-bb] USB rotor interface?


> This interface seems to be all one would need for a USB rotor controller
with a
> little programming effort.
>
> http://www.labjack.com/labjack_u12.html
>
>
>
> Mike
> K4HN
> VE ARRL & W5YI
> President - Clearwater Amateur Radio Society
>
>
> ----- Original Message -----
> From: "Gary "Joe" Mayfield" <gary_mayfield@hotmail.com>
> To: <amsat-bb@amsat.org>; "Paul Yeager" <w4ski@arrl.net>
> Sent: Monday, July 29, 2002 1:48 PM
> Subject: Re: [amsat-bb] USB rotor interface?
>
>
> Most of the code is written to the hardware directly.  You can get around
> this as well, by using a PCI card to add parallel ports.  If you don't
have
> any PCI slots it gets tougher.
>
> Writing/building the USB interface is a bigger task.  USB requires the
> device on each end of the wire to have some smarts.  There are not a lot
of
> "experimenter's" kits for USB.  There are chip sets that may be adaptable
to
> rotor control, but it would take some adapting.  For example: the chip
sets
> for USB mice are very cheap, and are set up to provide the position
> Vertical/Elevation and Horizontal/Azimuth to the computer (The mouse uses
> encoders we use potentiometers - a detail) so far so good, but traffic the
> other way is stickier, usually the computer doesn't click or move your
> mouse.
>
> If you actually want to register your USB/Rotor interface, so you can plug
> it in and have it take off like regular USB devices there is a licensing
fee
> involved.
>
> The USB/Rotor interface has been on my list for a long time, but it
resides
> on that "get around to it" portion of my list, so it will probably stay on
> the list a long while.  FODTrack using a PCI card for the parallel
interface
> has worked too well.
>
> My Thoughts, 73,
> Joe
> ka0yos@amsat.org
>
>
>
> ----- Original Message -----
> From: "Paul Yeager" <w4ski@arrl.net>
> To: <amsat-bb@AMSAT.Org>
> Sent: Monday, July 29, 2002 11:06 AM
> Subject: Re: [amsat-bb] USB rotor interface?
>
>
> > What about a USB Parallel Port Adapter?  Here is one I found with a web
> search:
> >
>
http://www.nextag.com/Keyspan_6FT_USB_Parallel~10185002z0znzz2z1zzzmainz1-ht
> m
> >
> > Now, I can see one potential problem here..... software authors writing
> > directly to the parallel port hardware, rather than using operating
system
> > function calls designed for the same purpose.
> >
> > Application software that writes directly to hardware is unlikely to
deal
> > well with a USB Parallel Port Adapter, as there will be no parallel port
> > per se in the processor's IO space.
> >
> > However, application software that uses an operating system "send data
to
> > printer port" function should deal with such an adapter quite well, as
> long
> > as installation of the adapter causes the OS to recognize a new printer
> port.
> >
> > Fortunately, we have the luxury of consulting with the program authors,
> and
> > the adpaters seem to be inexpensive anyway.  Bottom line is, a USB
> Parallel
> > Port Adapter is an option, and may or may not work, depending on how the
> > application software is built.
> >
> > 73,
> >
> > Paul W4SKI
> > ]
> > At 08:36 AM 7/29/02 -0700, you wrote:
> > >Mark Johns <mjohns@cfu.net> wrote:
> > >
> > >>The new computer has no ISA slots, so the Kansas City Tracker/Tuner
> looks
> > >>like a non-starter.
> > >>Does anyone know of a rotor/radio control interface designs (something
> > >>similar to the FOD Tracker, perhaps) that use the USB bus rather than
a
> > >>parallel port?
> > >
> > >This is an increasingly common request. Why not help
> > >out your fellow hams (not to mention yourself) by
> > >designing one?
> > >
> > >Laura Halliday VE7LDH     "Que les nuages soient notre
> > >Grid: CN89lg                    pied a terre..."
> > >ICBM: 49 16.57 N 123 0.24 W        - Hospital/Shafte
> > >
> > >_________________________________________________________________
> > >Send and receive Hotmail on your mobile device: http://mobile.msn.com
> > >
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> >
> >
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