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.

Built an infrared motion detector using an NE555 timer IC for AC load control and an IR sensor module for sensing motion. Some key components of the circuit are a BC547 NPN Transistor which functions ...

PIR（Passive Infrared Detection）are used to detect motion of human movement. This version has a large lens which can support long range and wide angle. 2.54mm standard connector is easy to fix it ...

Stemedu 3PCS HC-SR501 PIR Human Body Motion Sensors, Infrared IR Motion-Activated Switch, Distance Detector Sensor Module for Indoor Stairs Corridor Night Light (Pack of 3pcs) Stemedu 31 ratings ...

Last year, I took a look at some mostly low-cost passive infrared (PIR) motion sensor modules. Then recently, I became more aware of cheap microwave radar motion sensor modules. The popular version of ...

Embedding a smart algorithm for presence and motion detection, the STHS34PF80 targets alarms and security systems, home automation, smart lighting, IoT devices, smart lockers, and smart wall pads. Its ...

This paper deals with the description of the development and design of a sensor with wireless data transmission for detecting the movement of people. As part of the development of the sensor, the ...

As you can see the quality is severely lacking. I have a Nikon D7100, but I don't know of any way to trigger video capture based on an external IR motion sensor.