The Cluster HAT interfaces a (Controller) Raspberry Pi A+/B+/2/3/4 with 4 Raspberry Pi Zeroes (NOT included). Configured to use USB gadget mode, it is an ideal tool for teaching, testing or simulating small scale clusters.

USB gadget mode: ethernet and serial console.

Onboard 4 port USB 2.0 hub.

Zeroes (not included) are powered via controller Pi GPIO

Individual Raspberry Pi Zero power controlled via controller Pi's GPIO

Connector for controller serial console (FTDI Basic).

Controller Pi can be rebooted without interrupting power to Pi Zeroes (network recovers on boot) ( not available when using a Pi 4 controller)

Kit includes:

Cluster HAT

HAT standoffs and screws

Short USB rope (colour may vary)

As with most things, there are many ways to configure the Cluster HAT. If you know what you're doing with Linux kernel gadget mode and networking you can probably skip most of these.