▲ ▼ Audio visualiser which can output to CRT monitor
Techmoan (Matthew Julius Taylor), the famous youtube retro tech reviewer has a need gap for a device which take in audio input and outputs a visualiser to a video display. His intention is to convert old black and white CRT display to audio visualisers, so device needs to connect with RF input and perhaps needs a bluetooth receiver for receiving the data.
If anyone knows a solution for this need gap or is interested to work on it, please mention it in the comments.