Affordable USB oscilloscopes have come a long way over ... so we can certainly see the appeal of a project that tries to combine the best of both worlds.

An oscilloscope makes the invisible world of electricity visible, letting you observe electrical signals on a video display in real-time. For $25, the Flea-Scope plugs into any computer via USB ...

Here’s a USB oscilloscope project from a few years back. It’s easy to build on a single-sided PCB and very cheap because it uses just a handful of parts. At the center, an ATtiny45 ...