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Using the *Arduino Motor Shield* to interface with 2 DC motors http://www.instructables.com/id/Arduino-Motor-Shield-Tutorial/step5/Two-Motors

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Learn how to run a CDROM brushless motor with Arduino http://www.instructables.com/id/Run-A-CDROM-Brushless-Motor-With-Arduino/

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from Instructables.com

Robot "Cheaper"

Minimalist 2-wheeled robot, built for MakeThings event in Vienna. It uses Arduino Uno and 2 servo motors, powered up by 4 AA batteries and senses world with infrared distance sensor.

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So far in this series we've had a diverse look at how Arduino can interact with a range of real-world devices from servo motors to ultrasonic range finders TVs to humidity sensors. Now we'll see if we could get the Arduino to make a few sounds. We'll actually do a bit better than that -…