Thumby Retrofit

Upgrading a monochrome game system to colour. I found a 0.42" colour screen that's apparently designed as a drop-in replacement for an older mono oled. I used these in my Lego brick - https://youtu.be/uzfsiPFNfkg And smart ring - https://youtu.be/-G9adESjjRg So I ordered a few to try them out. Then I realised it's also the screen used in the original Thumby. The form factor and pinout is the same (mostly). The chipset, resolution and colour are different, so it did need a new screen driver. You can get the Doom port from my GitHub - https://github.com/AncientJames/rp2040-doom (It runs in greyscale on a stock Thumby.) The playthrough at the end is live, but I added sound effects in post because the silence was getting oppressive. The screen is available here: https://www.aliexpress.com/item/1005007804650049.html