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Make: Action by Simon Monk

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Chapter 8. Advanced Motor Control

In the previous chapter, you got as far as controlling the speed of the motor, but not the direction in which it turns. This chapter explores different options for controlling a motor’s direction. This includes looking at a number of special-purpose ICs and modules designed to make it easier to control the direction as well as the speed of DC motors.

It is often handy to be able to reverse the direction of a motor. For example, linear actuators that open and close windows or doors work by running a DC motor in one direction to open and then turn the motor in the opposite direction to close. Similarly, if you are making a small robot, you will probably want it to be able to turn its wheels in both directions. ...

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