INNOVATIVE BREAKTHROUGH——SPENFiLY High Power IR Blaster. With built-in battery and high power signal transmission, it can control multiple infrared devices at the same time, solving the ...

Printed circuit boards were once so simple. One or two layers of copper etched on a rectangular fiberglass substrate, with a few holes drilled in key locations so components could be soldered into ...

If you think of a metal detector, you’re probably thinking of a fairly simple device with a big coil and a piercing whine coming from a tinny speaker. [mircemk] has built a more modern adaptation.