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.

[ladyada] has a freshly-published and amazingly thorough tutorial on passive infrared (PIR) motion sensors. Most often seen in security floodlights and automatic doors, in creative hands these sens… ...

As found in the schematic of the generic PIR motion detector module, one pin of the LDR goes to ground rail (0 V) and the other pin goes to Pin 9 of the PIR controller IC (BISS0009). The same pin goes ...

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.

Module provides integration and flexibility for passive infrared (PIR)-based motion detection applications including customer sensing, lighting control and other energy management purposes. The ...

Xsens has expanded its MTi product portfolio with the introduction of the MTi-7, a miniature Inertial Navigation System (INS) module which uses input from an external Global Navigation Satellite ...