But despite owning significantly more powerful devices, I keep coming back to my Raspberry Pi collection for low-power ...
If you want to build your own small K3s cluster, you can use the following repository as a reference: https://github.com/Sthirs/rpi-cluster ...
An older couple in the U.K. partnered with a startup to help reduce their energy bills, and it really worked out well. Here's how they did it.
A Raspberry Pi multiboot lets you pick Raspberry Pi OS, Ubuntu, or MX Linux at startup without changing SD cards.