You too can build this 3D printed ESP32 solar system model, and yes, it spins
Summary The Meridian Orrery uses an ESP32, 3D parts, magnets and motors to build a self-updating tabletop solar system. Uses an RTC ESP32C3 and DS3231 to calculate planet positions offline after a one-time calibration. A clever 1:11 transmission ratio allows a small Moon to precisely orbit Earth as the rings and planets align at night. … Read more