Owning an oscilloscope is a real gamechanger ... Of course, you also need a PC, although there is apparently third-party software for Android if you don’t want to lug a laptop around.

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.

PC oscilloscope maker Pico Technology has upgraded power measurement in its companion analysis software to include crest ...