Arduino odometer for bike (1.1 mA total current, no display)
Here is a simple, (somewhat) compact, and low power (only about 1.1 mA current draw) odometer that can be installed on a bicycle. Wheel rotations are detected by voltage spikes generated from a magnet (zip-tied to a spoke) moving near a wire coil (mounted on a chain stay). In order to keep this pr...
By: spencerearly
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By: spencerearly
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[original story: Instructables]