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 which ...

Engineered with a polarization filter that allows only light received from a specially designed reflector to be recognized by the detector, the Series OPDM 12 retro-reflective laser sensors eliminate ...

A new piece of gear fielded to Marines this summer will allow troops to detect moving targets without weighing them down so much on troop movements. The Magnetic Intrusion Detector II was fielded in ...

In Texas — at least around Houston — we don’t have basements. We do, however, have bilges. Both of these are subject to taking on water when no one is paying attention. A friend of mine asked me what ...