We’re still not sure exactly how [connornishijima]’s motion detector works, though many readers offered plausible explanations in the comments the last time we covered it. It works well enough, though ...

VIENNA, Va. and OREM, Utah—After a successful six-month beta test, Alarm.com this week announced the general availability of its Image Sensor—a wireless device that combines a motion detector with a ...

Let me introduce another simple microcontroller-based do-it-yourself circuit that detects motion and excites a light source in a flash. The “snooper” here is an ordinary passive infrared (PIR) motion ...

In the microcontroller era today, Arduino is more than just a tool to accomplish hobby tasks. There is actually a close relationship between microcontroller technology and home security, since you can ...

We may receive a commission on purchases made from links. Motion detectors might make you think about smart security systems and surveillance, but they can be great and inexpensive tools that you can ...

Many close-proximity motion detectors use the classic, widely available passive-infrared (PIR) approach, which is effective but has limited sensitivity and adjustability, and can’t “see” through ...