2 layers85.6 × 54 mm

KiCad boards from 2 GitHub repositories tagged “ecdsa”, the most starred first; open any of them in PCBKit.


GiZano/QuakeGuard
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.