Lesson 9- Control Servomotor

 

A servo motor is a specialized motor whose direction can be precisely set

This code uses the servo library. Libraries are code that adds additional functions to Arduino.

For example, to use a servo motor, we need to:

(1)    #include <Servo.h>. //include the servo library

(2) Servo myservo; // create servo object to control a servo

(3) myservo.attach(9); // attaches the servo on pin 9 to the servo object

(4) myservo.write(pos); write the servo position( 0 to 180)

#include <Servo.h>

Servo myservo; // create servo object to control a servo

// twelve servo objects can be created on most boards

int pos = 0; // variable to store the servo position

void setup() {

myservo.attach(9); // attaches the servo on pin 9 to the servo object

}

void loop() {

for (pos = 0; pos <= 180; pos += 1) { // goes from 0 degrees to 180 degrees

// in steps of 1 degree

myservo.write(pos); // tell servo to go to position in variable 'pos'

delay(15); // waits 15 ms for the servo to reach the position

}

for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees

myservo.write(pos); // tell servo to go to position in variable 'pos'

delay(15); // waits 15 ms for the servo to reach the position

}

}