Using motion detectors and an Arduino you can trigger lights, ... A simple way to think of the sensor is a switch; ... Here is the Arduino code for the Parallax sensor. int motion_1 = 2; int light ...

It’s a fairly simple project, too: just hook an Arduino Uno up to a motion sensor and an electronic switch called a relay, then plug in your fan, and you’re good to go.

This remote switch uses a sg90 servo, an Arduino Uno, ... Or maybe a sensor that detects sounds, like, perhaps, ... My first remote operated light switch, ...

This motion sensor is tied to a stay-on switch for the kitchen. So, when I take out the trash, the kitchen lights do not turn off abruptly just because I have left the room for more than a minute.

The motion sensor can be placed anywhere to control up to two rooms of lights. It has a motion detection range of about 5 meters, or 16.5 feet, so whenever anyone walks near it, lights turn on.