How to build your own flood sensor for under five bucks Not only will it save money, but a single homemade device can monitor your whole basement.

Researchers designed an IoT network using sound and motion sensors that estimates public space utilization. The ideas can be applied to other IoT sensor networks.

The crankshaft position sensor is one of those under-the-hood components you never think about, until it decides to ruin your day. This tiny electronic part monitors the position and speed of your ...

Montana is about as far from the sea as it gets, and has been since at least 60 million years ago. And yet when it comes to measuring the acidity of ocean water, a group from Missoula has proved ...

A Boeing engineer tells me that a modern airplane has about 10,000 sensors constantly recording information, not only to inform pilots about the plane's performance but also to forecast mechanical ...

The Etch a Sketch toy has gone more or less unchanged for over 60 years, but if you’re handy with a soldering iron you can build an upgraded version that ...

When light strikes the photodiode’s active region, current flows from cathode to anode. Ideally, this entire photocurrent ...

Wireless Sensor Networks will open the floodgates to the wireless revolution. But building a practical wireless network can be a daunting challenge unless the concepts are kept simple.

This DIY sensor has a matrix of 32 x 32 photo cells, just over 1,000 pixels. Sean Hodgins Hodgins recently created a working 1-kilopixel sensor and stuck it inside a 3D printed camera body. Although ...

Using an Arduino, a moisture sensor, an LED matrix, and a few other parts, dr.mcc's build monitors the moisture level in a pot of soil and then lets you know when the plant needs water by ...