Once again Amanda Ghassaei has brought us another interesting project that can be recreated without too much effort - a speedometer for a bicycle (or for that matter, anything with a rotating wheel). Amanda's version detects wheel rotations using a reed switch and magnet, and then uses the duration of each rotation to calculate the speed. The process is demonstrated in the following video:
The addition of a neat laser-cut enclosure gives the project a neat finish and really looks good. You could add backlight control and also functions to track distance and speed data for later analysis. For complete details so you can make your own, check out Amanda's Instructable. And for more, we're on facebook, Google+, and twitter - so follow us for news and product updates as well.
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However we don't leave you alone to figure it all out, included is a great project and instruction booklet, plus access to a supporting web page and software examples. In other words - this is everything you need to get started for a fun range of electronics and Arduino related projects! So to get started or for more information and to order, check out the product page.