If you're a hardcore DIYer, an electrical or mechanical engineer ... is a subscription box that brings a new Arduino-based electronics project to your doorstep each month. It's like the cheese ...

There are hundreds of cool Arduino projects out there ... It’s part art project, part computer science, and part electrical engineering, all of which harness the abilities of piezo sensors ...

but building such a contraption is quite an engineering feat. An Arduino user named Ben described the process on Instructables, saying he gave the project a shot after first "dismiss[ing] the idea ...