Let’s face it: most of us have trouble getting out of bed. Many times it’s because the alarm isn’t loud enough to rouse us from our viking dreams. [RimstarOrg]’s homeowner’s association won’t let him ...

The cool thing with crystal radios is that they are solely powered by the incoming radio waves. However, it usually means listening to your AM radio station with an earpiece and even then, depending ...

A crystal radio set is almost like magic. Sound appears, seemingly out of nowhere, powered not by cords and batteries, but by the very air around you. “You can’t quite work out how it comes alive,” ...

Lawo has introduced a software-based interface for its crystal control surfaces. “This virtual control interface replaces complex hardware with an intuitive, touchscreen-operated control surface that ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. I'm sure many readers have built "crystal radios" that were able to provide audio from local AM ...

I’m sure many readers have built “crystal radios” that were able to provide audio from local AM radio stations to sensitive earphones using only the RF power from the radio station–no batteries are ...