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.

MELBOURNE, Fla.--(BUSINESS WIRE)--A team led by L3Harris Technologies (NYSE:LHX) has been selected to provide the Shipboard Panoramic Electro-Optic/Infrared (SPEIR) system to the U.S. Navy that will ...

So, you need to measure the temperature of your IC, PCB, or box? No big deal: you can use one of the many available approaches, via sensors such as a thermocouple, RTD, thermistor, diode, or an ...