What impresses me most here isn't just the technical achievement, but how the project transforms abstract data into physical movement. We've become so accustomed to viewing everything through screens that there's something deeply satisfying about a physical object that silently points to a spacecraft traveling 28,000 km/h overhead with humans inside.

The mathematical transformation from TLE to actual motor positioning is non-trivial - converting between reference frames always seems straightforward on paper until you're debugging at 3am wondering why your arrow is pointing at the ground. I appreciate that they shared actual code rather than glossing over the hard parts.

For anyone wanting to build this: from my experience, the hardest part is actually the mechanical design. Getting smooth movement without backlash in consumer-grade steppers and servos takes patience. The 28BYJ-48 is a good budget choice but has noticeable "slop" in its gearing, which can make precise pointing challenging.

This reminds me of those old mechanical orreries that modeled the solar system. There's something profoundly human about building machines that help us comprehend the cosmos.