Heartbeat-Sentinel: Building a Raspberry Pi-Powered 'Doomsday Detector' for Civilizational Resilience
In an era where internet outages and cloud failures can mask real-world collapse, the open-source Heartbeat-Sentinel project uses a Raspberry Pi and software-defined radio to monitor physics-based signals like power grids, air traffic, and cellular beacons. This system detects if civilization is truly functioning—without relying on the brittle internet—offering a lifeline for edge resilience. It’s a provocative blend of hardware hacking, anomaly detection, and ethical engineering that forces developers to confront technological fragility.