Raspberry Pi Cluster Case
Description
3D printed Raspberry Pi case for 4 machines. Parts required : * 12v 120mm computer fan * Network switch - https://www.amazon.co.uk/gp/product/B07RQHL251 * USB Power supply - https://www.amazon.co.uk/gp/product/B00VTI8K9K * 5x Micro USB cables - https://www.amazon.co.uk/gp/product/B07BGT9KWJ * 4x Short Network Cables - https://www.amazon.co.uk/gp/product/B00VC03Z7C Tools required : * M5 12mm screws (for fan mounting) * M3 6mm screws (for case walls and Pi mounts) * M5 screw tap * M3 screw tap * 5mm drill * 3mm drill * 2.5mm drill Drill out M3 screw holes with the 2.5mm drill and tap with M3 screwtap. Be very careful with the ones on the Pi racks. I used a 2.5mm drill for each mount, and then a 3mm drill for the first couple of mm before using the M3 tap for the rest. I also tapped the M5 holes around the fan. The front wall can be a sheet of clear acrylic so you can see the innards. You'd need to cut a 3mm thick piece to the same size as the rear wall section and then drill/tap holes appropriately. The network switch was chosen as that one is really easy to open up and modify. I was able to drill a small hole in the case and pass a USB cable through, then solder it to the underside of the power socket. It's only 5v so means you can use the 5th USB socket on the Anker power supply rather than have a separate supply for the switch. The fan was connected to the 5v and gnd pins on the top Pi's GPIO pins (pins 4 and 6). It runs slowly (as it's designed for 12v) but it's enough to get airflow and pretty much silent. I've included two versions of the base. One with corner walls and one without. The without will need you to print out the corners and superglue them to the rear and front walls (best to do this with them screwed in place so you're sure they're right) Still very much a work in progress (I'm still waiting for the acrylic sheet to be delivered) Raspberry Pi cluster mounts were from https://www.thingiverse.com/thing:2994509 and modified slightly to have screw holes rather than pins. Unless you want to glue them all in place (not recommended) you might need to add a bit of foam on the top so that the case lid holds everything together. Fan grills were found https://www.thingiverse.com/thing:298648 but any 120mm grill should be ok. Planning to use double sided foam tape (or 3m pads) to hold the PSU and switch in place. Can be painted afterwards but I'd mask off the bits that glue will be applied to (if any) and use a good filler/primer paint first.
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