Universal Einsy box for Rpi and Bear frame

thingiverse

A Bear is in full development mode now. The envisioned box no longer fails to fit the frame. When working on Juan's modules, I discovered that they simply wouldn't fit my Bear Frame. Because I liked his design a lot, I decided to make it work. I am posting this as a "remix" because "makes" do not allow sharing STLs. The issues were in mounting it between the 106 mm of space taking into account the hook plate and mounting parts used for the frame. When everything was fitting, I found that it only left 0.48mm of clearance between X motor and box, so I made the frame adjustable: moving inward. I suggest using 3mm or 6mm inward movement and choosing the corresponding parts. 6mm inward leaves only 5mm between heated bed and box, so I have chosen for 3mm. The module for the Einsy itself from Juan is not modified, so the design stays modular, the same Einsy box for all frames! But I had to try my hand at the RPi module, as these would never properly fit the Bear frame. I mentioned that the box needed to move inward. I managed this with a modified frame holder, which you screw onto the frame first (flathead M5 screws are only into sunk holes in the frame holder) and the box module is screwed to that one with up to 4 M3 screws. The screws for mounting to the frame are therefore not inside the Einsy box anymore, as that would require a change to the modular box. These holes in the modular box are simply no longer used, but they are invisible as they rest against the frame / frame mounting plate. I designed two holders, one for when you want 3mm inward and another for 6mm inward movement. Likewise, my Rpi 3+ Bear module has mounting plates for 3mm inward and 6mm inward mounting. The final bear RPi 3+ module is only 11mm taller compared to the other modules, for comparison, originally the Rpi would be 40mm elevated above the frame (due to the hooked plates), and not have any connection to the lower part of the frame: longer cables needed to cross this 40mm gap... I could take off more of these 11mm, but I wanted a bit of space for cable management. Because I only wanted a RPi 3B+ module, I only took that Rpi 3B+ module and the short mounting plate and modified those into bear frame components. If you want a RPi 3A or RPi 4 module, you can slice that Rpi part of Juan and slice my lower part of the Rpi 3B+ STL and make one .STL for that version that you need. There is also room for modularization! With the same slider construction of Juan fit the Einsy part to the Bear frame part with -or- without a (flatter) RPi module in between... How about that, Juan? I found that the options for Rpi from Juan did not work for me on a bear frame. The same was true for both bear frame mods he published: not fitting the 106mm of space. I took all my measurements against the Fusion files of the bear frame. They proved 100% correct for the resulting printed STLs. None of the parts need support, but I recommend printing with a brim for the box parts, to prevent them from warping / lifting. I printed them in PETG, using color transitions at layer heights. (So not using my MMU2.) **edit - 5.1.2020** The original source files had only two mounting points for the step down. I added a third mounting point. Also, I added the step files.