However, [lonesoulsurfer] went a different route with this fun DIY build, creating an oscilloscope with a low-resolution LED display. Yes, the signals are shown on a 10×10 matrix made up of red LEDs.

I always have! I don’t know why, but I like the idea of using an oscilloscope screen as a general use video display. Why not? In my case it sits on my desk full time, has a large screen area ...

An oscilloscope gives the following display for the electricity from a battery. Figure caption, Oscilloscope trace showing battery voltage: a straight horizontal line at the top of the screen.