Raspberry Pi 4 Chimney Fan Case

thingiverse

This design is engineered to optimize airflow around a Raspberry Pi 4. It draws cold air from the bottom, speeds it up through a narrowing tube, and directs it across the hot components of the Raspberry Pi, expelling heat out the top. The case provides full access to all USB and Networking ports, as well as monitor, sound, and power connections. However, the expansion GPIO pins are obstructed, except for thin cables like fan power cords, and the SD card is somewhat difficult to reach. This project requires two additional components: 1. A 90mm computer case fan 2. A Raspberry Pi heatsink case with a flat, all-metal design and fins While it may work without these components, they are specifically intended for use together. Additional notes: Using a 12v fan connected to the Raspberry Pi's 5v power line generates sufficient airflow with minimal noise. A spacer, approximately the size of a fan, is included. This component should be positioned above the fan, with the support bars kept away from it. The spacer serves to reduce noise levels. If you find the existing noise level tolerable without it, you can omit this piece. The individual components of this case are secured together using machine screws and nuts or, if preferred, twist ties.