Adam Fabio created this analog gauge to show your computer’s CPU utilization:

Analog CPU Gauge

The goal of this project was to build an analog gauge to display computer CPU utilization. I’ve always been fond of classic analog gauges. Most CPU Gauges are either digital on screen displays, or implemented with an LCD mounted in a drive bay

I’d always wanted a CPU gauge for my computer. Ok, and a bandwidth gauge for my router. You name it, I want a nice analog gauge for it. It always seemed a bit silly to use an true galvanometer based analog gauge for signals that are inherently digital.

The board is available on Tindie:

Analog Gauge Stepper Breakout Board

Tiny stepper motors for analog gauges and the like!