Building a $120 Porch Monitor for Construction Noise

When Daniel realized he'd be leaving town just as a construction site next door began drilling into rock, he didn't settle for secondhand reports. Instead, he designed a complete weatherproofed porch sensor system that reports decibel levels, particulate counts, and vibration data directly into Home Assistant. This episode walks through the entire build: the ESP32-based brain, the digital MEMS microphone that delivers lab-adjacent accuracy for under $4, the dust sensor that duty-cycles its laser to last years, the accelerometer that catches vibrations before you hear them, and the clever enclosure design that keeps electronics dry while letting sensors breathe. Whether you're monitoring construction, wildfire smoke, or just curious about citizen-science hardware, this is a masterclass in practical sensor deployment. Episode #527959 — open it directly at myweirdprompts.com/527959