Cathodic TV-style BTT PITFT50 V2.1 + RPI4 case with fan

Cathodic TV-style case for BTT PITFT50 V2.1 screen + RPI4 + fan
 

This was designed so i don't buy anything else than what i had on hand, you will find a recap of what's needed down below.

The main concern when designing this was airflow : the RPI4 has a tendency to get pretty hot easily, mine was running around 55-60°C in a fanless case with just heatsinks, running 2 printers + octoprint (marlin prusa) + mainsail/klipper (ender 3 s1 pro) + klipperscreen +2 video streams.

With this case (and the fan on the 5V port because i didn't have the right wires on hand to plug it into the 3.3V) I attained a temperature around 31°C

I agree cable management could be better, but i didn't want to spend on extra hardware, adapters, etc… 

Update : 

Added a new lid for 30mm fans with a better air intake

Shopping list : 

You will need : 

• BTT TFT50 V2.1 with included raiser screws (mine were 17mm) + raspberry fixing screws (included with it too)
• raspberry pi4
• 40mm fan (I suggest to wire it to 3.3V instead of 5V, for noise reasons)
  • 4 M3 nuts to fix it to the lid
  • 4 M3x16mm screws (i had some laying around with a conical head, so the design is made around that)

----------------OR-----------------

• 30mm fan 
  • 4 M3 nuts to fix it to the lid
  • 4 M3x16mm screws (i had some laying around with a conical head, so the design is made around that)

Printing :

I used PETG for this, I don't know if PLA would work, feel free to tell in the comments if you try it 

I included the Gcode for a prusa MK3S using PETG with both pieces in the same file (fits the bed)

Assembly :

Just slide the screen + rpi in the box, attach the fan to the lid, connect it to the RPI and slide the lid behond the “top” brackets

Snap it into place (you may want to help the bottom tabs bend a little to avoid breaking them)


Side note : this is a WIP and I will maybe someday update this model to another version with better cable management (90 degrees USB outlet to hide cables in the back for example)