With a 200 foot depth rated housing and a 6 foot maximum detection range, the Pulse 8X from JW Fishers is the company's top of the line detector. It's heavy duty construction and high sensitivity make ...

The objective of the GoldPic 3 project is to detect coins and jewelry in shallow water and on the beach by optimizing the timing and circuitry for detecting small items. Using readily obtainable low ...

Figure 1 shows a way to control a light (or other 120-V ac appliance) with a passive-infrared (PIR) alarm sensor. The original concept was to turn a closet or shop light on whenever someone went into.

Modern smartphones are packed with a wide range of sensors, and their magnetometer can successfully identify certain kinds of ...