Recently I came across the Pi Pico VGA Terminal board that does away with all that faff. Now, I could buy it, but in the DIY self-build theme of the device I thought I’d have a go at making my own.
The schematics for the board are available, but some of the markings on it are a bit hard to read. Fortunately the design follows Raspberry Pi’s own example of doing bit-banged VGA on a Pi Pico, so it was easy to figure out what to do.
I’ve so far prototyped the circuit on a breadboard and nothing got hot or exploded, and I even got a video signal. The next step will be to put all of the components onto a piece of perfboard to make a “proper” expansion board to slot into the RC2014’s backplane.
