New device page with a full video here!

Via the crt scope page:

This is a variation on a fairly common build where audio is piped directly into the horizontal and vertical portions of the deflection yoke inside of a CRT Television. The additional features this one has are two internal audio amplifiers (very basic LM386 circuits), the ability to run audio to the TVs internal speaker (with adjustable volume), and the ability to send color video signals to the TV to “color” the waveform which I go over in the video here on this page.
This build can be replicated extremely easily - without the internal amplification circuit - and also made to run in different modes for a more standard horizontal wave display. Plenty of information on that can be found online with a little searching, but I’ve included the schematics for this particular build here.
If you do plan on recreating this thing for yourself BE CAREFUL. There are elements inside of CRT Televisions that hold enough charge to KILL YOU. Do not attempt if you are unfamiliar with electronics, and do your research beforehand on how to properly discharge the device and how to safety deal with this sort of device.
November, 2020.