What is this?

My country, Brazil, has no graphing calculators avaiable, sure, you can get them imported, but those are expensive
So what i want? I want to make a graphing calculator that’s under 400R$ and with parts i can get shipped here

The devlog

I mostly researched, first time doing kicad, y’know?
I started by wiring up the keyboard, then, I went to connect the keyboard to the pico, and realized how pin wasteful that would be, as well as possibly hurt performance. Soooo, I looked on the PicoCalc for anwers, and they use another MCU, what a genius solution! So i decided on picking an STM32 Blue Pill
And then, of course, i wired them up
Just a quick note: I should have not used the STM32, it’s a mess, i’m switching to the Arduino Nano next devlog.