One of the cool products in the Adafruit Store is the Automotive Gauge Stepper Motor, a stepper motor with a needle indicator attached to it. This gauge can be used for a physical-feel, similar to a tachometer on a car.
Since we already have a Servo motor, we can build an analog gauge to measure temperature. This PROJ can also be re-purposed to create a physical output gauge for anything you can measure!
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