BTT-PI v 1.2

Two piece case for BTT Pi v1.2.  Though this is my own design, I had a lot of inspiration from this design and highly recommend it if you need case for RPi 4b.

Print with your desired material.  No supports required.  Print with the flat surface down.  This was designed with tight tolerances so you may need to scale up slightly if using something other than PLA. Check out this article.  There is also a folder with a scaled-up version. In my testing with the Prusa MK4, I was successful with both PETG and PLA without needing the scale the original design.

The top has a cutout for a 40mm x 40mm fan with screw holes sized for M3 fasteners.  There are other cutouts around the case to allow for the various different wire connections on the board to be routed outside the case.

The holes to secure the BTT Pi v1.2 board in place and case together are sized for M2.5 x 12 fasteners with a little extra room for a slightly longer screw.  

DO NOT DRILL THE HOLES ON THE BTT Pi v1.2 BOARD for M3 fasteners!!! I did this and discovered that the copper tracings in the board are very close to the mounting holes.  This caused me to unknowingly expose the copper and resulted in me shorting a board with the screws used to hold the case together.  This killed the board.  Lesson learned.  Use the smaller fastener.

For assembly, I found it easier to install the fan to the top first, connect the fan wires and any other accessory wires to the board, routing the wires through the case then place the board onto the top.  Secure the WiFi antenna to the bottom of the case, ensuring the connection point isn't touching one of the GPIO solder points on the bottom of the board.  Place the bottom of the case onto the assembly, sandwiching the board between the top and bottom.  Finally, secure with M2.5 x 12 fasteners.

BTT-Pi v2

Print with your desired material.  No supports required.  Print with the flat surface down.  This was designed with tight tolerances so you may need to scale up slightly if using something other than PLA. Check out this article.  There is also a folder with a scaled-up version. In my testing with the Prusa MK4, I was successful with both PETG and PLA without needing the scale the original design.

There are various options for tops/bottoms of the case depending on your needs, just pick a combination that works best for you.  The fan option is designed for a 40mm x 40mm fan with screw holes sized for M3 fasteners.  There are other cutouts around the case to allow for the various different wire connections on the board to be routed outside the case.

The holes to secure the BTT Pi v2 board in place and case together are sized for M3 fasteners with extra room for various lengths.  

For assembly, I found it easier to install the fan to the top first, connect the fan wires and any other accessory wires to the board, routing the wires through the case.  Route the WiFi anteanna wire between the auxiliary power connection and the SD card slot then place the board onto the top.  There is enough room for the WiFi cable to fit between the boar and the case.  Secure the WiFi antenna to the bottom of the case, ensuring the connection point isn't touching one of the GPIO solder points on the bottom of the board.  Place the bottom of the case onto the assembly, sandwiching the board between the top and bottom.  Finally, secure with M3 fasteners.