It's easy to spend $30 on a single-purpose Zigbee motion sensor or even $60 on smart air quality monitors, while a far more powerful device just sits in your junk drawer. A standard ESP32-based IoT ...
Ever wondered why your phone's display turns off when you're on a call or bring it close to your face? That's the proximity sensor detecting if you are using the earpiece to talk, thus turning off the ...
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