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… ...

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 ...

Posted in Arduino Hacks Tagged 2016 Hackaday Prize, arduino, capacitive coupling, electrostatic, Hackaday Prize, library, motion detection, the hackaday prize ← High-Voltage Fractals ...

You'll definitely need some gear for it—the Arduino for one, but also a PIR motion sensor, not to mention the (cleaned and rinsed!) Raid Power Sprayer motorized spray bottle.

Linksys doesn't specify how exactly the technology works, but other versions of motion detection using mesh networks have analyzed WiFi signals to detect "noise" in signals bouncing off the walls.