I assembled an 8-node raspberry pi cluster, but never got around to setting it up.
Raspberry Pi 4 Model B with External WiFi Antenna Connector (U.FL)
Raspberry Pi 4 Model B, 4GB RAM +32GB MicroSD +HEATSINK +ADAPTER RPI4-MODBP-4GB
Raspberry Pi 4 Model B 64bit Quad Core Cortex-A72 8GB BRAND NEW SEALED
Raspberry Pi 4 Model B, 4GB WITH Case
Raspberry Pi 3 Model B V1.2 w/ 64gb SD Card - NO AC ADAPTER, PI AND SD CARD ONLY
Raspberry Pi 3 Model B Quad Core 1.2ghz 64bit CPU 1gb RAM WiFi & Bluetooth 4.1