[amsat-bb] DiSEqC Antenna Tracker System, HB9SCT

[Daniel Cussen]

I am based in Ireland. I have investigated diseqc as a means of rotator
control and I have generated custom messages using a windows PC

See here for video

http://www.youtube.com/watch?v=HfhTP59WXUM&feature=mfu_in_order&list=UL


I used some basic electronics to 'wiggle' the voltage to the rotator to
generate the diseqc signal.

I know others have done this too.

I was most interested in building an XY rotator using two off the shelf
diseqc domestic rotators. I chose xy over azimuth elevation for 2 reasons,
one the standard diseqc dish rotators typically only rotate 1/2 or 3/4
turn, and XY is better for fast overhead passes at microwave frequency

Using the software in that video, and a couple of components you can send
messages to that rotator.

I also used a similar set up to reverse engineer and send custom diseqc
commands to other domestic satellite equipment equipment such as a DirecTV
downconveter.

I never really completed or documented my work properly, but I have some
records and the hardware.

It might be possible to modify specific diseqc rotators to travel beyond
1/2 a turn, however an XY design needs little modification. I have a non
diseqc XY rotator which I have used in the past and it is superior on high
passes at microwave frequencies.

I have also build other arduino rotator controllers.

Any questions please ask on or off list

Dan EI9FHB



On Sat, 9 May 2020 13:50 Gregory Beat via AMSAT-BB, <amsat-bb at amsat.org>
wrote:

> Anyone in North America experimenting with DiSEqC Control for Tracking ??
> https://en.wikipedia.org/wiki/DiSEqC
>
> DiSEqC (Digital Satellite Equipment Control), pronounced "Die-Sec", is a
> special communication protocol for use between a satellite receiver and a
> device such as a multi-dish switch or a small dish antenna rotor.
> DiSEqC was developed by European satellite provider Eutelsat, which now
> acts as the standards agency for the protocol.
>
> DiSEqC Protocol and Low-Noise Block Voltage Regulator TPS65235 for
> Satellite
> by Na Xu, Texas Instruments (December 2016)
> http://www.ti.com/lit/an/slva863/slva863.pdf?&ts=1589027212595
> ===
> DiSEqC : Low Cost Antenna Tracker
> Christian Monstein, HB9SCT (Switzerland)
> http://www.e-callisto.org/Hardware/Diseqc/SARA%20Diseq_V01.pdf
>
> Callisto DISEqC Controller (June 2018)
> http://www.e-callisto.org/hardware/Diseqc/Doku%20Diseq.pdf
> The key components (and most expensive ones) are two DiSEqC motors (Az-El)
> and the Arduino micro-controller.  Callisto Hardware - Knowledge Library.
> http://www.e-callisto.org/Hardware/Callisto-Hardware.html
>
> STAB (Italy), HH100, HH120 rotors (~ € 85.00)
> http://www.stab-italia.com/prodotto.php?cod=F208010
> HH100, HH120 Manual
>
> http://www.stab-italia.com/downloads/rotor%20sat%20division/hh100%20and%20hh120/Instruction%20Manual%20%5BEN-DE-IT-FR-ES%5D.pdf
> ==
> greg, w9gb
>
>
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