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 ...
How-To Geek on MSN
6 smart home devices you can build for cheap with an ESP32 board
ESP, easy as ABC.
Omega’s new UWRH-2 wireless relative humidity transmitter measures both relative humidity and temperature with a stand-alone, compact, battery powered NEMA design that transmits relative humidity, ...
Food Drink Life on MSN
Smart sensors catch spring humidity before mold takes over
Spring showers may bring flowers and sunlit afternoons, but they also bring moisture that creeps into walls, ceilings and ...
Engineers now have two multifunctional transmitters at their fingertips for measuring relative humidity and temperature. The HT737 is a digital unit that measures relative humidity, temperature, dew ...
The thermometer and the barometer were born in the 1600s and, since then, sensors used for environmental purposes have ...
Designing an analog circuit can be a frustrating experience, as noted by Nick Cornford in his Design Idea (DI), “DIY RTD for a DMM.” With a fortnight’s struggle, I completed the design of 4 mA to 20mA ...
A flexible foam sensor built from silver selenide detects temperature and pressure simultaneously, enabling a robotic gripper ...
Omega’s new UWRH-2-NEMA is a wireless relative humidity transmitter that features a stand-alone, compact battery power NEMA design that transmits measurements back to a host receiver up to 120 m (400’ ...
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