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Mastering BeagleBone Robotics by Richard Grimmett

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Connecting a motor controller to control the speed of your tracked platform

The first step to make the platform mobile is adding a motor controller. This allows us to control the speed of each wheel (or track) independently. Before you get started, let's spend some time understanding the basics of motor control. The unit moves by engaging the motors. If the desired direction is straight, the motors are run at the same speed. If you want to turn the unit, the motors are run at different speeds. The unit can turn in a circle if you run one motor forward and one backwards.

DC motors are fairly straightforward devices. The speed and direction of this motor are controlled by the magnitude and polarity of the voltage applied to its terminals. The higher ...

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