EARTH WEEK
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Videos can be viewed on: Windows 8, Windows XP, Vista, 7, and all versions of Macintosh OS X including the iPad, and other platforms that support the industry standard h.264 video codec.
Wire a gyroscope sensor to your Arduino… set up ultrasonic "range-finding" sensors… use passive infrared sensors to detect motion and trigger an LED… make your Arduino "listen" to a knock sensor, and detect tilting… For each sensor, Baichtal explains the technology, then demonstrates how to wire, code, and test an example.