Building my new mini-supercomputer :) Raspberry Pi 4 with four Raspberry Pi Zero 2W. PoE powered Based on Cluster HAT Individual Raspberry Pi Zero power controlled via Controller Pi GPIO (I2C) Raspberry Pi Zeros powered via Controller Pi GPIO 3D printed stand Waveshare PoE HAT Satisfying boot sequence at the end! Full part list and STL file are on my blog, article "The Tiny Cluster", link in the profile | uptime.lab