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Re: Simplified Computer Rotor Control?
- Subject: Re: [amsat-bb] Simplified Computer Rotor Control?
- From: "George Henry" <ka3hsw@xxxxxxxxxxxxx>
- Date: Thu, 25 Aug 2005 20:47:07 -0500
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The FOD-Track board is probably one of the simplest interfaces that will do
what you want... It's desiged to work with the Yaesu az/el rotors, but can
easily be used with your separate units. You simply provide 5 VDC to the
rotor position pots (simple voltage dividers) and feed the resulting wiper
voltages to the appropriate FOD-Track board inputs. (If you aren't using it
with the 5400 or 5500 control box, you will also need to supply the
interface itself with 12 - 18VDC.) Your computer compares the voltage to
the desired antenna position values, and then the interface switches the
motors R, L, U, or D until the values match. The board is available for
about $5 from FAR Circuits, and all-new parts will run less than $30. The
documentation, schematic, parts list, and board layout are all available
from the AMSAT download site, as well as the FOD-Track software (it's also
compatible with most popular tracking programs).
George, KA3HSW
----- Original Message -----
From: "hasan schiers" <schiers@netins.net>
To: <amsat-bb@amsat.org>
Sent: Thursday, August 25, 2005 7:02 AM
Subject: [amsat-bb] Simplified Computer Rotor Control?
>I have G-800SA Yaesu Azimuth and G-550 Yaesu Elevation rotors.
>
> I have no interest in spending a fortune on a 5500 and its (non-supplied)
> serial interface.
>
> Could someone point me to articles on the Web or commercial sites that
> show
> inexpensive interfaces that I might be able to use with the above rotors.
> I'm
> assuming that one could tap off the pot voltages at the rotor control
> heads
> and feed them to an interface. This should not be all that difficult to
> do,
> and I assume has been offered as a less expensive alternative to the
> internal
> interfaces.
>
> If someone has keywords that will provide useful url's I'd be happy to
> google
> them. I just thought I'd check here first if someone has already done the
> sifting.
>
> 73,
>
> ...hasan, N0AN
> ----
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----
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