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Formally verified FPGA watchdog for AM broadcast in unmanned tunnels

by anonymoosestdnt·Feb 18, 2026·62 points·28 comments
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AI Analysis

●●●BangerWizardryNiche GemBold Bet

Formally verified FPGA watchdog for critical AM broadcast proves hardware safety via math, not testing.

Strengths
  • •Formal verification of 14 hardware properties eliminates an entire class of watchdog bugs; rare in amateur RF projects.
  • •Event-driven Rust/JS MVC with stateless UI enforcing device-as-source-of-truth shows mature architecture for a niche domain.
  • •Complete signal flow from NCO to SCPI bridges RF domain and software cleanly.
Weaknesses
  • •Hyperspecific use case (AM broadcast in unmanned tunnels); market size measured in dozens of deployments.
  • •Red Pitaya FPGA limitation makes this non-portable; commercial radio systems use ASICs or dedicated modules.
Category
Hardware
Target Audience

Emergency comms engineers, tunnel operators, RF engineers working in confined spaces with specific regulatory needs

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