As many know, the Raspberry Pi 4 can struggle with high CPU temps and overheating. I've designed a simple fan mount to attach a 30mm fan to your Pi to help cool it! There are a few versions with 2 or 3 screw mounts. There are versions to accept m2 (or #2 machine screw) and m2.5 for the board-mount screws. The fan screw holes are all m3. You'll need a 3v or 5vDC 30mm fan as well. We just had the fan wired directly to 5V and GND but you can write (or find online) a script that will control fan speed based on the CPU temperature.
To connect the fan to the headers, I soldered breakaway female headers with 0.1" (2.54mm) spacing to the fan wires and plugged them in. Make sure you use the correct pins and note the polarity!
2-27-2020: Added 40mm mount, design has not been printed or tested
2_hole_2.5mm.stl | 160.5KB | |
2_hole_2mm.stl | 164.8KB | |
3_hole_2.5mm.stl | 174.8KB | |
3_hole_2mm.stl | 181.8KB | |
Pi_Fan_40mm.stl | 185.7KB |