6. Programming to do something:

/*
 Controlling a servo position using a potentiometer (variable resistor)
 by Michal Rinott <http://people.interaction-ivrea.it/m.rinott>

 modified on 8 Nov 2013
 by Scott Fitzgerald
 http://www.arduino.cc/en/Tutorial/Knob
*/

#include <Servo.h>

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

int potpin = 0;  // analog pin used to connect the potentiometer
int val;    // variable to read the value from the analog pin

void setup() {
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object
}

void loop() {
  val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1023)
  val = map(val, 0, 1023, 0, 180);     // scale it to use it with the servo (value between 0 and 180)
  myservo.write(val);                  // sets the servo position according to the scaled value
  delay(15);                           // waits for the servo to get there
}

/* Sweep
 by BARRAGAN <http://barraganstudio.com>
 This example code is in the public domain.

 modified 8 Nov 2013
 by Scott Fitzgerald
 http://www.arduino.cc/en/Tutorial/Sweep
*/

#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
int act = 180
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(1000);                       // waits 15ms for the servo to reach the position
  }
 // for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees
    myservo.write(act);              // tell servo to go to position in variable 'pos'
    delay(150);                       // waits 15ms for the servo to reach the position
  }
}

/* inspired in Sweep
 by BARRAGAN <http://barraganstudio.com>
 This example code is in the public domain.

 modified 8 Nov 2013
 by Scott Fitzgerald
 http://www.arduino.cc/en/Tutorial/Sweep

modified 25 May 2017 by alvarolaroja
 
*/

#include <Servo.h>

Servo myservo;  // create servo object to control a servo
// twelve servo objects can be created on most boards

int pos = 10;    // variable to store the servo position
int act = 160;
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 AQUI TENDRÍA QUE PONER UN IF, EN EL CUAL SERÍA SI LEO X EN EL MONITOR SERIAL EL SERVOMOTOR SE MUEVE, A ACT TRAS 5 SEGUNDOS VUELVE A LA POS INICIAL Y SE PARA.
    
    myservo.write(pos);              // tell servo to go to position in variable 'pos'
    delay(4000);                       // waits 15ms for the servo to reach the position
  
 // for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees
    myservo.write(act);              // tell servo to go to position in variable 'pos'
    delay(1000);                       // waits 15ms for the servo to reach the position
  }

#include <SoftwareSerial.h>

#include <Servo.h>



Servo finalservo; 

int pos = 10;    
int act = 160;
int encendido=0;  
void setup(){
Serial.begin(9600);

  myservo.attach(9);  
}

void loop() {


  if (Serial.available()) {
    encendido = Serial.read();
    /*if (encendido == '5') {         
     
        // servo en posicion pos
       myservo.write(pos);             
                         
       
      }
      */
      // Si es una 'L'
      if (encendido == '8'){          
      
        myservo.write(pos);              // tell servo to go to position in variable 'pos'
                          // waits 15ms for the servo to reach the position*/ 

      delay(1000);            
      }
      
            myservo.write(act);  
  
 /*// for (pos = 0; pos <= 180; pos += 1) 
    
    myservo.write(pos);              
    delay(4000);                       
 // for (pos = 180; pos >= 0; pos -= 1) 
    myservo.write(act);              
    delay(1000);                       
  }
 }

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