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.
Recently, I exhausted my stock of common passive infrared (PIR) motion sensor modules and was looking for a new one to play with. I searched the web for a small type with self-contained electronics.
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7 smart home devices you can replace with a $5 ESP32 board
Extra sensory production.
There’s no shortage of ESP32 development boards out there, with many of them offering some “killer app” feature which may or may not align with whatever it is you’re trying to do. But if you’ve got a ...
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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.
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