A traditional early project for someone discovering a love for electronics has been for many years a metal detector. This would mean a few transistors back in the day, but today it’s more likely to ...

Walk-through metal detectors (aka the ones which you often see at public places like airports) seem to be pretty simple machines. You walk through them, they detect anything metal on you (or don't), ...

There's often history just beneath your feet, waiting to be discovered. A long-forgotten button, an antique coin, or even a remnant from one of the wars that shaped our country. Trying to unearth ...