To detect motion using a PIR sensor connected to an Arduino and trigger an LED (using the built-in LED) when motion is sensed. Passive Infrared (PIR) sensors are electronic devices that detect motion ...

If you’ve got an existing smart home rig, motion sensors can be a useful addition to your setup. You can use them for all ...

The Montgomery County Council approved two million dollars to install HALO vape sensors in every high school bathroom. After one month with the sensors, multiple administrators are reporting issues.

There are some that should raise alarm bells, too. Like KYS (sometimes written as ... According to Internet Matters, the ...

This project uses an HC-SR04 ultrasonic sensor to measure how close an object is. A buzzer and LED react depending on the distance, similar to a car parking sensor. < 10 cm → buzzer and LED stay on.