You, too, can build this ESP32 3D-printed solar system model, and yes, it spins
The Meridian Orrery is a DIY 3D-printed solar system model powered by an ESP32C3 and a DS3231 real-time clock, designed to accurately display planetary positions without internet connectivity. It uses magnets, motors, and clever gear ratios to physically represent the orbits of planets, including a small moon circling Earth. The device self-calibrates nightly by aligning its rings and adjusting planet positions based on astronomical calculations. Created by illusionmanager and shared on Instructables, it's intended to be accessible for makers with basic tools and skills.
- ▪The Meridian Orrery uses an ESP32C3 and DS3231 RTC to calculate planetary positions offline after initial calibration.
- ▪It features a 1:11 gear ratio system that allows a tiny Moon to accurately orbit the 3D-printed Earth as the ring rotates.
- ▪The model self-updates each night by spinning its rings into alignment and positioning planets according to the current date.
- ▪All components are 3D-printed, and the build requires only basic tools, magnets, motors, and an ESP32C3 Super Mini board.
- ▪The project was created by illusionmanager and published on Instructables as a step-by-step guide for hobbyists.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at XDA Developers.
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