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“Actually it is a GPS portable unit so it can be mobile on just about any method of transportation but fat bikes traveling on wilderness snow routes here in Alaska seems to be fun use for it right now. But feel free to build one for car, snow machine, dogsled, or helicopter. My last project involved analog speedometer—https://www.instructables.com/id/Bike-Analog-Speedometer/ so I thought it would be a good project to build it into a mechanical moving map display. The concept is old—see photo above of 1930’s era speedometer attached moving map for a car. And everyone remembers the neat moving map display in 007’s Astin Martin in Goldfinger. Just like mechanical watches have their OCD champions attentive to the fussy gearing on their wrist you can now luxuriate in the slow meandering walnut-humming-chuckle of gear-motors driving a divining pointer over your hand assembled map! It is a relatively easy project with just a few parts from the usual electronic stores. The coding is all Arduino IDE and the hookups just require the minimum wiring skills. The case for the instrument can be build multiple ways and people with machining or 3D print access probably can build something different.”

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