Patching Together Logic Gates

The digital world offers many advantages over its analog relatives, the use of boolean logic among them. Some of the functions, like NOT, OR, and AND are fairly straightforward and line up nicely w…

Tiny PCB PiezoPiano Plays Just One Octave

Grand pianos are beautiful instruments, but take up altogether too much space. Upright pianos are smaller, but still fairly hefty. When it comes to the PiezoPiano, though, we suspect nobody could c…