Turn Old Phones Into Useful Sensors: Practical Upcycling for Home, Garden, and Neighborhood
Don’t drawer‑ban those old smartphones. Turn them into quiet, capable sensors for noise, motion, weather, and more—with simple, safe workflows.
Neighborhood Air You Can Trust: How to Build a Reliable Community Sensor Network
Smoke, traffic, and weather change block by block. Here’s how to build a trustworthy neighborhood air‑quality network from parts to insights.