OK, I am going through things and space is a big problem. I also get indications it may be possible to display the text on the actual display. Python pillow or pygame libraries could perform the needed adjustments on the fly. I just need to test.
https://www.linux-projects.org/uv4l/tut ... t-overlay/This one I do not think would work.
https://hackaday.io/project/12450-raspb ... -recordingThe pillow library I used on the sentry gun facsimile and it could do what we are wanting
The other main issue I am having is that I would need to switch to a VGA or HDMI based display to get audio to really make things work. The issue is finding a compatible display for the screen accurate case that will work on 5 or 3 volts DC. Most displays run at 12 volts.