You should see if Arduino based computers fit the bill for you: https://www.instructables.com/Arduino-Basic-PC-With-TV-Output/ https://www.instructables.com/Ard

You should see if Arduino based computers fit the bill for you: https://www.instructables.com/Arduino-Basic-PC-With-TV-Output/ https://www.instructables.com/Arduino-Basic-PC-With-TV-Outpu...