Wi-Fi! It’s everywhere, and yet you can’t really see it, by virtue of the technology relying on the transmission of electromagnetic waves outside the visual spectrum. Never mind, ...

This article can be more of a guide on how to construct an heartbeat sensor utilizing an Arduino. Although a complicated one, this project comes as an interesting one to many electronics hobbyists.

The holidays always remind us of our favorite toys from when we were kids. Johnny Astro, an Erector set, and — of course — a Spirograph. [CraftDiaries] has an Arduino machine that isn’t quite a ...