There’s a growing movement of people who believe that our space agencies are underfunded and that humanity isn’t paying enough attention to our present accomplishments and future plans in space exploration. Well, I know one way to direct attention to something: Point at it. This is the first prototype of the International Space Station orbit tracking pointer. If that name isn’t explanatory enough, its one job is simply to point directly at the ISS wherever it is in space, a small but constant reminder of what humanity is capable of.
A stepper motor controls the azimuth and a servo controls the elevation. The Station orbits the earth every 90 minutes so the speed of motion is roughly equivalent to a minute hand on a clock: slow enough that it’s not really interesting to watch, but fast enough that it’s in a new place every time you glance over.
As I've noted, this is just a first prototype, a proof of concept, and it's not extremely functional or user-friendly. Things I’d I would include in version 2.0:
A few of these features have been implemented in a version of the device created by Patrick Ferrell.
(ServoCity.com Parts Only)