1-to-4 HDD Stackable Raspberry NAS with PSU v3

thingiverse

Designer: OpenSCAD Slicer: Cura Printer: Creality 3D CR-10 Material: PLA Optimus 1.75 White (filament-abs.fr) # Compact Stackable Raspberry NAS with PSU and between 1 and 4 hotplug HDD # IMPORTANT If you use spinning disks, they will heat a lot up to 80°C. I added a 120x120 5V cooling fan on the side to keep temperature below 30°C. 20190125-EDIT: I also designed an enclosure to include the 120x120x25 5V fan This is the second version. The v1 was hard to assemble, typically the bullet connectors for the power rail. It was way too high and not so compact. I compacted the HDD and RPi levels I changed the stack assembly to use M2x3mm screws I removed the bullet connectors with a tradeoff by soldering. # Goal A small NAS using a Raspberry, with 4 HDD and a power supply, to save energy and space. It does not have to be lightning fast for my home needs (backups, photos/movies/music repository, ...). Result: 16 Watt instead of 70 Watt! ## Design constraints I currently use a small standard PC with 2x1TB HDD in RAID as a storage for backups with LDLC.com. I want to switch to a Raspberry Pi NAS. Raspberry Pi 2 is the chosen board. It's powerful and low power consumption. ## Printing ### Before printing You might need: - to check and adjust the size and location of the screw holes for the PSU - to check and adjust the size and location of the screw holes and walls for the SATA-USB PCB adaptors depending on yours Even if you buy the same references from the same supplier, the item can change, sometimes. ### HDD level (between 1 and 4 times): - Printed on CR-10, with PLA in 2 hours and 33 minutes (approx. 38g of PLA) - Nozzle 0.4mm - first layer 0.375 mm @ 195°C/75°C, other layers: 0.2 mm @ 190°C/70°C - 3 top layers, 3 bottom layers, 3 perimeters - Infill: 20% triangle - Horizontal expansion: -0.2mm - Skirt suggested, Brim recommended, no support ### RPi level - Printed on CR-10, with PLA in 2 hours and 6 minutes (approx. 41g of PLA) - Nozzle 0.4mm - first layer 0.375 mm @ 195°C/75°C, other layers: 0.2 mm @ 190°C/70°C - 3 top layers, 3 bottom layers, 3 perimeters - Infill: 20% triangle - Horizontal expansion: -0.2mm - Skirt suggested, Brim recommended, no support # Possible improvements: - Add status LED (Power) - Add status LED (System starting/started/stopping/stopped blink/loadHeartBeat/blinking/off) - Add status LED (OMV process stopped/starting/started no process=off, process but no http=blink, process and http=on) - Add an high voltage fuse - Add a graceful reboot/shutdown GPIO push button (short/long press) - Redesign the HDD level with a tray