Properly installed smoke detectors are often the first line of defense against a house fire, keeping the homeowner informed and ready to take action. However, it's important that the smoke detector ...

The PIR library implements a class to monitor 1 or more PIR sensors. The library supports default 8 PIR sensors per object, which typically are added in setup(). It is possible to add a sensor (pin) ...

The significance of safety in a house cannot be overstated, so how well a door alarm sensor will safeguard your family from harm should be your top priority while shopping for one. These sensors come ...

Learn how to create a simple heart rate monitor using an Arduino Pro Mini, PulseSensor, and OLED display. This beginner-friendly project is perfect for learning basic electronics, sensors, and data ...

ABSTRACT: This study investigates the optimization of Fresnel lens designs using Zemax software, with a focus on minimizing beam divergence by controlling the output spot diameter on the image plane.

The library gives control over up to 16 parallel working PIR devices over I2C. The idea for this library came up in a discussion about how to fully cover an area with PIR sensors without blind spots ...

The best home security systems are user-friendly, affordable and customizable to your needs. NerdWallet is committed to editorial integrityMany or all of the products on this page are from partners ...

Romanian military scuba divers (R) in a speed boat are pictured backdropped by Romanian frigate "King Ferdinand" during an exercise in April 2024. (Daniel Mihailescu/AFP via Getty Images) MILAN — NATO ...

As radar technology continues to advance, it offers an increasingly broad range of capabilities, making it a viable alternative to traditional passive infrared (PIR) sensors. With radar’s enhanced ...