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Assembling the hardware

A quick review of the physical hardware in this cluster

First, I gathered four Raspberry Pi 4’s. I say “gathered” because I already had most of them lying around, so I just picked up a fourth board to round out my set. The thing about Raspberry Pis is, they’re easy to accumulate. I see this as a giant plus. I don’t know if my boyfriend shares this enthusiasm.

With the Raspberry Pi 4, it’s critical that you use a 3amp power supply if you don’t want the board to get throttled by power limitations when under heavier loads or using peripherals. After that, there were just a handful of other accessories to order. Many of them I already had around, like the network patch cables and the switch.


Reduce, reuse, recycle

I highly recommend you cannibalize your own existing stock rather than ordering new for this project, since it’s just a hobby build.

Here’s what I’m using:

ItemUnit PriceQuantityTotal Price
Raspberry Pi 4, 4GB$55.001$55.00
Raspberry Pi 4, 8GB$75.003$225.00
PNY 32GB Elite Class 10 U1 microSDHC Flash Memory Card$6.994$27.96
Eau 4 Slot Raspberry Pi 4 Cluster Case$21.991$21.99
Smraza USB-C Power Supply, 5.1V 3A$9.994$39.96
AmazonBasics RJ45 Cat-6 Ethernet Patch Internet Cable - 5' (1.5m) (5-Pack)$14.631$14.63
NETGEAR 8-Port Gigabit Ethernet Unmanaged Switch$19.991$19.99