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Lego Mindstorms EV3 Essentials by Abid H. Mujtaba

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Outputs

EV3 is equipped with a number of outputs. Some of them are simple but non-obvious, such as the LEDs under the navigation buttons, the speaker that can play audio files, and the LCD screen itself that can display text and images (in black and white, of course). We will discuss how to use these outputs in Chapter 3, EV3 Brick Programming.

The primary outputs of EV3, however, are the motors that enable locomotion. This is the fundamental characteristic of robots—any computer can play sounds and display images, but only a robot can move around on its own.

Motors

EV3 is shipped with three motors, one medium and two large, as shown in the following screenshot. These are distinguished by their shape, layout of the rotor, speed, torque, and precision. ...

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