The presented schematic shows how to build a simple PIR motion sensor. PIR sensors allow motion sensing, it is almost always used to detect whether someone has moved in or out of the sensors range.
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7 smart home devices you can replace with a $5 ESP32 board
Extra sensory production.
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9 reasons I use mmWave sensors in my smart home
You can use mmWave sensors to monitor presence rather than simply detecting motion.
As radar technology continues to advance, it offers an increasingly broad range of capabilities, making it a viable alternative to traditional passive infrared (PIR) sensors. With radar’s enhanced ...
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