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Technology, Innovation & Digital Infrastructure

DIY Nuclear Event Detectors: Hackers Race to Replace Cold War Tech

Published: 13 March 2026 06:01Category: Technology, Innovation & Digital InfrastructureAuthor: CRYSTALPROXY

Subtitle: As legacy nuclear blast detectors vanish, tinkerers build their own-raising questions about technology, safety, and the strange world of citizen threat detection.

In a world where nuclear sabre-rattling never fully fades, a small but determined group of hackers is racing to keep an obscure piece of Cold War technology alive. Their mission? Build a homemade device capable of detecting the flash of a nuclear explosion-before it fries your electronics or worse.

The story starts with the BhangmeterV2, a modern DIY project inspired by Cold War paranoia and real-world defense technology. At its core was the HSN-1000: a specialized sensor engineered to detect the intense gamma ray pulse that signals a nuclear detonation. The idea is simple-detect the blast early enough to shut down sensitive electronics, potentially sparing them from the devastating electromagnetic pulse (EMP) that follows.

But technology, like history, moves on. The HSN-1000 is no longer available, leaving modern tinkerers stranded. Enter “Bigcrimping,” a hardware hacker who decided to replicate the device from scratch. His BHG-2000 detector is a marvel of resourcefulness: instead of a commercial sensor, it uses four BPW34S PIN diodes, each coated in black paint to block visible light but allow gamma rays to pass through. The result is a sensitive array that, in theory, can catch the brief, invisible warning of a nuclear event.

The electronics, though compact, are clever. A transimpedance amplifier reads the faint photocurrent generated by the diodes, boosting it so a second-stage circuit can trigger an alert. The whole system fits onto a custom PCB-a drop-in replacement for the now-missing HSN-1000.

There’s just one hitch: without access to a gamma radiation source, nobody knows if it actually works. Bigcrimping is appealing to the European community for help, seeking someone with access to cesium-137 or cobalt-60-radioactive isotopes used in scientific labs. The alternative, as he wryly notes, would be a real nuclear detonation-an option that, for obvious reasons, everyone hopes to avoid.

The open-source nature of the project raises fascinating questions about the intersection of DIY culture, public safety, and the legacy of Cold War technology. As the world continues to grapple with the threat of nuclear weapons, even amateur engineers are finding ways to adapt and respond. But for now, the BHG-2000 remains a work in progress-a testament to curiosity, caution, and the enduring power of a good hack.

As we await a safe test for this device, one thing is clear: the desire to understand-and possibly survive-the unthinkable remains alive in the hacker community. Let’s hope they never get their ultimate field test.

WIKICROOK

  • Gamma Ray: Gamma rays are high-energy electromagnetic waves from nuclear reactions or decay, capable of penetrating materials and potentially disrupting electronic systems.
  • PIN Diode: A PIN diode is a semiconductor device that detects light or radiation by generating current, commonly used in optical and radiation detection systems.
  • Transimpedance Amplifier: A transimpedance amplifier converts tiny electrical currents into measurable voltages, crucial for accurate signal processing in optical and sensor-based cybersecurity systems.
  • EMP (Electromagnetic Pulse): An EMP is a sudden burst of electromagnetic energy that can damage or disrupt electronics, often linked to nuclear blasts or specialized weapons.
  • PCB (Printed Circuit Board): A Printed Circuit Board (PCB) is a flat board that supports and connects electronic components using copper tracks instead of wires.