There’s a seemingly unending list of modifications or upgrades you can make to a 3D printer. Most revolve around the ...

Visualizers used to be very much in vogue, something you’d gasp in at amazement when you’d fire up Winamp or Windows Media ...

A reliable indicator of the air quality in offices, classrooms, or living rooms is the CO2 content. In fresh air, the concentration of carbon dioxide is around 400 ppm. This stands for “parts per ...

This time I bring an electronic kit for beginners, this is a very cheap and interesting device that displays audio levels into the LEDs just like any audio level bar indicator will do. It is simple ...

Who doesn’t love free stuff? WTOP is relaunching “Friday Freebies,” bringing you the top freebies you can get in the D.C. region, every week. We’ll run them down every Friday morning on air at 103.5 ...