The Cluster HAT interfaces a (Controller) Raspberry Pi with 4 Raspberry Pi Zeros (NOT included). Configured to use USB Gadget mode, it is an ideal tool for teaching, testing or simulating small scale clusters.
How to get cheap solar power - 14 solar-themed Instructables. Learn how to make your own solar panels for less, build a solar over, solar powered phone charger and much much more! pinning for fruit drying for next year.