I've spent the last few months designing a project that runs CircuitPython. Unlike many projects, this project does not use an off-the-shelf CircuitPython development board like Adafruit's Feather M4 Express or IstyBitsy M4 Express. Instead, I wanted this project to be a single circuit board that contains all of the functional parts of the project - the CPU and its necessary hardware (which would usually be on the development board) as well as the peripherals (things that would generally be o...