Modular Raspberry Pi Cases

NOTE: V6 is posted at https://www.thingiverse.com/thing:7284295, which allows for easier configuration using the OpenSCAD Customizer

This is a design for a modular version of my Raspberry Pi cases, that allow for a variety of HATs as well as an SSD. The basic difference from the legacy versions of the design is that the bottom of the case is now implemented as a bottom cover. This allows a module to be placed between the Pi case and the bottom cover, such as for an SSD or spacer. All previous cover options can be used for the top, where special modules will be developed for specific HATs over time. The different module 'layers' are connected typically by M3 screws. The layers of the modular Pi case are summarized as:

1. Top cover, which may be screw on (using M3 screws) or snap on. Some may support specific fan options and some may support specific display options (e.g. TFT or ePaper).
2. (Optional) A spacer or HAT module (as needed for specific HAT cards , e.g. Hifiberry Amp/