Tired of condensation wrecking your shed tools or greenhouse gear? I built a no-frills ESP32 + DHT22 node that wakes every 15 minutes, grabs temp/humidity data, beams it over Wi-Fi, and sleeps—running ...

First of all, there are definitely simpler ways to monitor remote temperatures, but [Mike]’s remote MQTT temperature sensor and display project is useful in a few ways. Not only does it lay out how to ...

Thermopile sensors offer a reliable way to measure temperature without physical contact, making them ideal for real-world applications where speed, safety, and precision matter. Whether you are ...

Local-first wins.

The U.S. Department of Energy (DOE) has launched three RFID-based sensor projects as part of a $19 million investigation into identifying ways in which technology can make energy efficiency more ...

Now in its sixth year, the Cornell project team CU GeoData bridges engineering and earth sciences to design and deploy environmental sensors, including a sensor network across the Finger Lakes and a ...