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.

The motion-sensor module is an optical sensor that uses illuminating LEDs and focused detectors to sense moving objects. The module uses one bank of LEDs to illuminate a target and another bank of 32 ...

It’s really hard to overstate how awesome ESP8266 development boards like the Wemos D1 Mini really are. For literally a couple of dollars you can get a decently powerful Wi-Fi enabled microcontroller ...

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