Hardware TOTP Token

Welcome to the start of my project. It's still really early days with large issues to figure out. For now, I want to give some details. As of posting this, here's what the breadboard layout looks like using Fritzing: (Display is using the EYESPI ribbon cable)

There's definitely better ways to connect some of these parts together. My biggest one that I'd like to do is connect the STEMMA port of the DS3231 with the RP2040. It would remove some of the wire mess, and would free up two digital pins. The keen eyed might've also noticed that the backlight is just being powered with straight 3.3V. That is because I haven't looked too far into how to make a PWM signal for the backlight. My priority right now is getting the software working.

On the UI side, the adafruit_buttons library is only for touchscreens, and it also makes searching for an alternative/guides for a non-touchscreen UI annoying. GUIs are something I haven't delved into creating from scratch before, so I've been working on my own idea while searching.