[NLRS] Rotator Genius

Brad Johannes bradjrc at gmail.com
Tue Jun 16 21:26:16 EDT 2020


Check out the K3NG rotor controller github repository.
With a $15 Arudino Uno, $5 lcd, and $5 compass module, you'll have a
display that shows magnetic az without any calibration.
It will also control an antenna rotor.
I built a portable AZ/EL setup for satellites and an arrow antenna with the
K3NG setup.
Gpredict running on a raspberry pi tracks the sat and sends the AZ/EL data
to the Arduino which is running K3NG. There is basically a gyro sensor on
the boom and magnetic sensor on the mast giving AZ/EL feedback to the
ardiuno, and the arduino is controlling 4 relays that run 2 small hobby
worm gear motors that move the antenna.
You can also find examples of this on sarcnet.org on this type of setup.

73, Brad KB0HNN

On Tue, Jun 16, 2020 at 4:18 PM Arliss <w7xu at w7xu.com> wrote:

> Hi,
>
> I'm wondering if any of you are familiar with the Rotator Genius,
> by 4O3A.
>
>  From what I read, "the sensor uses a magnetic compass that reads
> azimuth...Accuracy within 1 degree. No need for initial
> calibration... User programmable true north and magnetic north
> correction... The sensor can now be used independently from the
> motor control unit with our AzimuthReader Windows app..."
>
> OK, so it's not cheap, but it sounds like it could be useful for
> rovers or perhaps 10 GHz portable operation? Not so much to
> control a rotor, perhaps, but to display the beam heading of your
> antenna. Or maybe there are other electronic compasses out there
> that can do this??
>
> The bad news was that a note on the Tower Talk reflector
> indicated that they were not shipping them at the moment.
>
> http://vibroplex.com/contents/en-us/d89.html
>
> Thanks.
>
>
>
>
> 73, Arliss  W7XU
>
>
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