With some simple sensors and imagination you can create all sorts of devices with an Arduino as the central controller. One example of this has been created by Instructables member gigafide and their motion-controlled desk lamp.
By using three ultrasonic distance sensors and the data they generate when an object such as a hand passes by, the Arduino can determine the movement of the hand and then control servos inside a lamp arm. And thus the lamp's direction and rotation can be controlled by the wave of a hand. This is demonstrated in the following video:
That's a great project, and could become the framework for all sorts of hands-free control systems, so visit the Instructable page to get started. And for more, we're on facebook, Google+, and twitter - so follow us for news and product updates as well.
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The package includes a wide variety of parts, sensors and modules including: a servo motor, lights, buttons, switches, sound, sensors, breadboard, wires and more. Furthermore a Freetronics Eleven Arduino-compatible board is included to make this an extensive hobby experimenter, inventor and starter kit.
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.