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 ...
It’s getting hot in here.
If you want to add humidity and temperature sensors to your home automation sensor, you can — like [Maker’s Fun Duck] did — buy some generic ones for about a buck. For a dollar, you get a little ...
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6 smart home devices you can build for cheap with an ESP32 board
ESP, easy as ABC.
Relative humidity, or RH, is the percentage of moisture in the air referenced to the maximum level of moisture the air can hold at that temperature and pressure. Early humidity sensors used natural ...
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 ...
This humidity sensor consists of 2 copper conductors that are located at small distance from each other. The relay switches as soon as the moisture makes a connection that is more or less electrically ...
Here's how to take advantage of the temperature and humidity sensors in HomePod 2 and HomePod mini. Photo: Ed Hardy/Cult of Mac HomePod 2 and (surprise!) HomePod mini both include temperature and ...
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