The odometer is driven by a small unipolar stepper motor. The motor is so small it can be driven directly by the Arduino using the example code found here at Arduino.
Mostly about Utah
I'm Rick Willoughby. I live in Utah, a retired Software Engineer. I'm a Mormon, married with 5 children and 12 grandchildren.
I emigrated from England in my late twenties, bringing with me one small suitcase and a few dollars. I appreciate the opportunities America has given me and the friendliness of the people to new citizens.
I blog about my family as well as politics, religion, finance, technology, and other topics.