RADARSAT-2 Orbit Clock

An Arduino-based clock that displays the current RADARSAT-2 satellite orbit position using motorized clock hands and an e-ink display.

The clock converts timestamps to RADARSAT-2 absolute and relative orbit numbers:
- Absolute orbit: Total orbits since reference epoch (January 24, 2008)
- Relative orbit: Position within the current 343-orbit cycle
- One motor hand shows the relative orbit cycle position
- The other motor hand shows fractional orbit progress
- Both hands are homed at startup using the hall effect sensor

Project repo: https://github.com/alexchang0229/orbit-clock/tree/main