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Distributed Earthquake Early Warning (EEW) system built on low-cost ESP32-C3 IoT sensors with Zero-Trust security, multi-node epicenter triangulation, and on-premise AI emergency reports. Includes custom PCB, FastAPI/Redis/TimescaleDB backend, and a React Native mobile app.
A DIY single-channel seismic station: Raspberry Pi, 24-bit ADC and a 4.5 Hz geophone in a garage on the Rodgers Creek fault, recording continuously and validated against a USGS station 1.6 km away.