Open Book Abridged Edition

A note from the project creator: The Open Book was my first real electronics project; the earliest designs date to late 2019. I have learned a lot since those early days, and as such, here three years later, I am hitting reset. At this time the repository contains a version of the Open Book designed around the Raspberry Pi Pico. It's optimized for low part count and easy hand assembly, but it runs on AAA batteries and may not be as svelte as some folks might prefer. At a later date, I hope to design a followup with built-in LiPo charging and a slimmer profile, but at this time, this version…