Dual HDD Raspberry NAS with fan control

prusaprinters

<p>This project was first inspired by araimbox's PiNAS. I wanted to get rid of the soldering part to connect the hard disks. Also, I was a bit afraid of the temperature management in such a small enclosure, with all the CPU electronics so close to each other.</p> <p>So here it is:</p> <p>Works with a<strong>Raspberry Pi 4</strong> and<strong>two USB SATA Hard disk drives</strong> connected with the shortest SATA USB cables I could find.</p> <p><strong>Small</strong> footprint, a 15.2cm x 15.2cm square.</p> <p>Mainly<strong>unibody</strong>, only two main parts including anchors to ease cable management with small zip ties. No supports needed for any of it.</p> <p><strong>No glue</strong>, only M3 screws.</p> <p>Plenty of air vents to<strong>prevent choking</strong>, plus a Noctua fan that only runs when necessary thanks to Tyler's tutorial on Howchoo.com. A bit of soldering is necessary if you want to achieve this, but it's worth the effort.</p> <p>I use OpenMediaVault on the software side; SMB sharing, DLNA streaming, lots of plugins and you can even run a Plex server. it's a very nice platform.</p> <h3> Parts list:</h3> <ul> <li>PLA, any brand I guess, but I used Prusament</li> <li>one Raspberry Pi 4</li> <li>two SATA Hard Disk Drives</li> <li>two very short SATA USB cables with thin connectors, I used a Sabrent model (see below)</li> <li>one 4mm NF-A4x10 5V Noctua fan</li> <li>one NPN transistor and a resistor if you want to trigger the fan's activity depending on the CPU's temperature (follow the tutorial, link is below)</li> <li>one Ethernet cable</li> <li>a few small 2.5mm zip ties</li> <li>four M3*4 screws</li> <li>two M3*6 screws</li> <li>five M3*8 screws</li> <li>eight M3*5 screws</li> <li>four M3*12 screws</li> <li><p>four 4mm diameter anti-slip rubber pads<br/> The whole assembly process is illustrated below.</p> <h3>Some references:</h3> </li> <li><p><a href="https://www.thingiverse.com/thing:3878669">araymbox's Pi NAS</a></p> </li> <li><a href="https://howchoo.com/g/ote2mjkzzta/control-raspberry-pi-fan-temperature-python">Tyler's fan control tutorial on Howchoo.com</a></li> <li><a href="https://www.openmediavault.org">OpenMediaVault</a> </li> <li><a href="https://www.amazon.fr/gp/product/B011M8YACM?tag=tv-auto-20">Sabrent USB 3.0 to SATA cable</a></li> <li><a href="https://www.amazon.fr/gp/product/B00NEMGCIA?tag=tv-auto-20">4mm NF-A4x10 5V Noctua fan</a></li> <li><a href="https://www.amazon.fr/gp/product/B083R62LYY?tag=tv-auto-20">M3 screws</a></li> </ul> <h3>Print instructions</h3><h3>Category: Electronics Summary</h3> <p>This project was first inspired by araimbox's PiNAS. I wanted to get rid of the soldering part to connect the hard disks. Also, I was a bit afraid of the temperature management in such a small enclosure, with all the CPU electronics so close to each other.</p> <p>So here it is:</p> <p>Works with a<strong>Raspberry Pi 4</strong> and<strong>two USB SATA Hard disk drives</strong> connected with the shortest SATA USB cables I could find.</p> <p><strong>Small</strong> footprint, a 15.2cm x 15.2cm square.</p> <p>Mainly<strong>unibody</strong>, only two main parts including anchors to ease cable management with small zip ties. No supports needed for any of it.</p> <p><strong>No glue</strong>, only M3 screws.</p> <p>Plenty of air vents to<strong>prevent choking</strong>, plus a Noctua fan that only runs when necessary thanks to Tyler's tutorial on Howchoo.com. A bit of soldering is necessary if you want to achieve this, but it's worth the effort.</p> <p>I use OpenMediaVault on the software side; SMB sharing, DLNA streaming, lots of plugins and you can even run a Plex server. it's a very nice platform.</p> <h3> Parts list:</h3> <ul> <li>PLA, any brand I guess, but I used Prusament</li> <li>one Raspberry Pi 4</li> <li>two SATA Hard Disk Drives</li> <li>two very short SATA USB cables with thin connectors, I used a Sabrent model (see below)</li> <li>one 4mm NF-A4x10 5V Noctua fan</li> <li>one NPN transistor and a resistor if you want to trigger the fan's activity depending on the CPU's temperature (follow the tutorial, link is below)</li> <li>one Ethernet cable</li> <li>a few small 2.5mm zip ties</li> <li>four M3*4 screws</li> <li>two M3*6 screws</li> <li>five M3*8 screws</li> <li>eight M3*5 screws</li> <li>four M3*12 screws</li> <li><p>four 4mm diameter anti-slip rubber pads<br/> The whole assembly process is illustrated below.</p> <h3>Some references:</h3> </li> <li><p><a href="https://www.thingiverse.com/thing:3878669">araymbox's Pi NAS</a></p> </li> <li><a href="https://howchoo.com/g/ote2mjkzzta/control-raspberry-pi-fan-temperature-python">Tyler's fan control tutorial on Howchoo.com</a></li> <li><a href="https://www.openmediavault.org">OpenMediaVault</a> </li> <li><a href="https://www.amazon.fr/gp/product/B011M8YACM?tag=tv-auto-20">Sabrent USB 3.0 to SATA cable</a></li> <li><a href="https://www.amazon.fr/gp/product/B00NEMGCIA?tag=tv-auto-20">4mm NF-A4x10 5V Noctua fan</a></li> <li><a href="https://www.amazon.fr/gp/product/B083R62LYY?tag=tv-auto-20">M3 screws</a><h3>Print Settings</h3> </li> </ul> <p><strong>Printer Brand:</strong> Prusa</p> <p><strong>Printer:</strong> I3 MK3S</p> <p><strong>Rafts:</strong> No</p> <p><strong>Supports:</strong> No</p> <p><strong>Resolution:</strong> 0.20</p> <p><strong>Infill:</strong> 15%</p> <p><strong>Filament:</strong> Prusament PLA PLA Mystic Green<br/> <strong>Notes:</strong></p> <p>You have to print one frame, one top and four feet.</p> <p>The frame and top parts were designed to be sturdy so no bending would occur in case of small temperature peaks; they are quite thick so expect long prints: 10 hours for the frame and 4 for the top.</p> <p>Pay attention to parts orientation on the bed (rather obvious).</p> <h3> How I Designed This</h3>