Here’s a USB oscilloscope project from a few years ... Quick, small, and useful; a schematic, board layout, firmware, and PC software sources are all available for download.

Utilize analog and digital signal processing techniques in building a low-cost high-precision digital oscilloscope for high school use.

At the budget end of the oscilloscope range lie the so-called pocket ‘scopes. About the size of a deck of cards, they combine a microcontroller and an LCD screen to make an instrument with a ...