Stealth Calculator

Stealth Calculator is a Casio calculator with a Raspberry Pi put inside! It works by using a custom PCB to replace the original PCB in the calculator. Connected to a Pico and uses matrix scanning to tell the Pi Zero 2 W which button was pressed. I can then add any features I want including homework helper, the regular calculator function, games and the ability to look at notes, and images. It's all bundled inside the original calculator shell!