[amsat-bb] Re: inquiry about homebrew az-el systems

Samudra Haque samudra.haque at gmail.com
Sat Feb 23 19:19:14 PST 2013

I hope it is evident, I am not focusing on the
controller/microcontroller/computer interface/az-el controller/etc. The
real issue is how cheaply can an antenna be mounted on a kingpost somewhere
on a surface, with a view towards the sky, and how conveniently can that
mount be motorized, with a sensor to give feedback to the ground station.
electronics, seem to be, (apologises to EE friends) a dime a dozen, cheaper
if made in hundreds, but the key drawback of any design is the mechanical
and electromechanical (can we use, mechatronics) system that serves as the
actuators. I am not referring to a hand held antenna assembly, but rather
something that we can all use in cold/hot weather and that can be put
together by one / two persons on an average post.

Comments welcome, I think the future holds bright for amsats and edu based


On Sat, Feb 23, 2013 at 9:50 PM, Lizeth Norman <normanlizeth at gmail.com>wrote:

> Gus and the group:
> Lots of birds going up in the next year. Success rate not 100% as it's
> rocket science oftentimes on a budget. Hopefully we'll get a few out
> of it.
> The Arduino IDE install supports PPM. The nice thing about that
> platform is that configuration is doable for just about all forms of
> hardware that you might drive with it and scaling can be done in
> software for the various different bits of kit.
> I am sure that with the appropriate development environment and having
> the hardware on hand IN a well equipped lab, it should be a weekend
> project to get running.
> The hard bit in my opinion is how to mount the antennas to the az/el
> clockwork. Will require a little woodwork/metalwork to finish.
> Everyone who does this will have a problem with some phase of it.
> Needs to be simple and repeatable.
> Norm n3ykf
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