It is likely that many of us will at some time have experimented with motion detectors. Our Arduinos, Raspberry Pis, Beaglebones or whatever will have been hooked up to ultrasonic or PIR boards whi… ...

TK has combined a PIR with an Arduino to create a smart safety light for the house or workshop. Follow along as this gets built out into a more extensive project.

The setup relies on a web cam, which uses motion-sensing software to detect a passing train. The video is analyzed by a computer in his room which passes a message to an Arduino when a train is near.

Sometimes, the best Arduino projects are the most ridiculous. Case in point, this motion-detecting squirt gun. The idea is simple: when it detects motion, the spray gun activates.

Xandem’s synergistic sensing technology created by the University of Utah has led to a new tomographic motion detection system. The product offers a new way to detect movement ...

The first trick, shown in the video above, is an Arduino-powered squirt bottle that also uses a motion detector to fire rapidly every time there's some motion in front of it.