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24514 The Internet of things : ǂb do-it-yourself projects with Arduino, Raspberry Pi, and BeagleBone Black / ǂc Donald Norris.
[...]
5050 Introduction to the internet of things -- Home temperature monitoring system -- Introduction to object orientation programming (OOP) with Java -- Home weather station -- Webcam and Raspberry Pi camera projects -- Internet-enabled, Arduino powered garage door opener -- Arduino irrigation control system -- Arduino lightning controller -- BeagleBone Black message controller -- BeagleBone Black with cloud service -- Machine-to-machine (M2M) communications.

Emphasis mine. Apparently the Arduino is more powerful than we realized.

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http://davesgeekyideas.com/2012/09/14/bay-area-rapid-transit-map-super-mario-kart-style/ (bigger image at the blog post)