fan cooled Raspberry Pi 4 case

prusaprinters

<p>A two part enclosure/case for a Raspberry Pi 4 incorporating a mounting for a cooling fan - with an additional separate fixing bracket for a custom PCB that controls the fan.</p><p>6mm M2 self-tapping screws are used to secure the Pi 4 into the case base and 8mm M3 pan head screws are used to connect the case lid to the case base. The screws/nuts supplied with the fan are used to secure it to the mounting on the case base.</p><p>Self adhesive feet are used to raise the case above the surface to allow cool air to flow in from beneath the case.</p><p>More detail on the usage context is available from <a href="https://onlinedevices.co.uk/Raspberry+Pi+cooling+fan+control+project"><strong>this link</strong></a>.</p><p>All the components use 1.75mm PLA and a layer height of 0.15mm with print details for each component produced on an i3 Mk3 shown in the table below.</p><figure class="table"><table><tbody><tr><td><strong>component file name/description</strong></td><td style="text-align:center;"><strong>brim (mm)</strong></td><td style="text-align:center;"><strong>filament&nbsp;</strong><br><strong>length (m)</strong></td><td style="text-align:center;"><strong>print time&nbsp;</strong><br><strong>(i3 Mk3)</strong></td></tr><tr><td><i>RPi4-minimal_case03.stl:</i> case base with integrated fan bracket</td><td style="text-align:center;">7</td><td style="text-align:center;">10.35</td><td style="text-align:center;">4h 02m</td></tr><tr><td><i>RPi4-minimal_lid04_rot180.stl: case lid</i></td><td style="text-align:center;">7</td><td style="text-align:center;">16.32</td><td style="text-align:center;">6h 27m</td></tr><tr><td><i>fan_PCB_holder04.stl</i>: mounting bracket for a&nbsp;custom PCB that controls a fan</td><td style="text-align:center;">7</td><td style="text-align:center;">0.85</td><td style="text-align:center;">29m</td></tr></tbody></table></figure><p>&nbsp;</p><p>&nbsp;</p>