This is great. I feel like the section where you were greenscreened could have benefited by labeling which of the waveforms was being represented in the x plane and which was in the y plane. I lost track and had to use some of my attention capacity to figure it out instead of listening.
A long time ago, when I doing my apprenticeship in an electronics workshop, I was looking through a cupboard looking for a test box, when I found a small diecast box labelled “The flying arsehole”. I asked my boss:” What’s this?”, and he told me to plug in the power to plus/minus 12v, and the outputs X and Y or an oscilloscope X and Y. I did that, and presto! I saw a circle which expanded and contracted and moved round the screen. It was making a Lissajous figure which was being modulated to make it expand and contract and get a small offset to make it move around the screen. It looked exactly like there was an “asshole” flying round the screen. I put it back in the bottom of the cupboard, and as far as I know it’s still there, amusing apprentices for generations to come!
