It was just before the COVID-19 era but the only right one I’ve seen in the woods is the Grove-mini PIR motion sensor (v1.0) module. I cannot find a good hands-on review of the minuscule digital ...

A PIR detector combined with a fresnel lens are mounted on a compact size PCB together with an analog ... the sensor gets familiar with the surrounding environment, and any motion in its field of view ...

[ladyada] has a freshly-published and amazingly thorough tutorial on passive infrared (PIR) motion ... most PIR sensors (like the one above) come in a simple-to-interface module containing ...

With just a Wemos D1 Mini, a standard PIR sensor, and some open source code, you can create a practical self-contained motion sensor module that can be placed anywhere you want to keep an eye on.

It has unique microwave motion sensor module with micro-strip patch antenna. It also has advanced ASIC-based electronics height installation calibration free 2-way PIR/ microwave sensitivity ...