Cluster HAT Kit (includes 4 x Raspberry Pi Zero W)
Canadian source for Raspberry Pi, Arduino, Micro:bit, DIY electronics, robotics, and educational products. Raspberry Pi approved distributor for schools, commercial and personal projects. Microbit accessories and educational kits. Huge collection of Adafruit and SparkFun products in stock.
Four-slot Raspberry Pi cluster board starts at $80
Raspberry Pi Cluster HAT v2.4 ( Pre Order ) – Scion Electronics
The Cluster HAT incorporates an interface board compatible with Raspberry Pi A+/B+/2/3. Configured for USB Gadget mode, it is an ideal tool for
Cluster Hat + 4 Pi Zero Kit
Raspberry Pi 4 1U rackmount bracket by Robert John Churchill, Download free STL model
C4labs 8 Slot Cluster Cloudlet : Stackable Cluster for Raspberry Pi 4B and Other Single Board Computers
ClusterHAT review: Raspberry Pi cluster computer kit — The MagPi magazine
Cluster HAT - DEV-18155 - SparkFun Electronics
Cluster HAT Case v3.0
GeeekPi Raspberry Pi 3G 4G Hat for Raspberry Pi 2B / 3B / 3B+ / 4B / ZERO / ZERO W /