// CHANGING LEDS INTENSITY

int led1 = 4; 
int boton1 = 3; 
int estadob1 = 0;

 void setup() {

 pinMode(led1, OUTPUT);
;
 pinMode(boton1, INPUT);
   }
 void loop() {
 estadob1 = digitalRead (boton1); 

  if (estadob1 == HIGH) {
    
      analogWrite(4, 55);
      delay(100);
      analogWrite(4, 114);
      delay(125);
    analogWrite(4, 175);
      delay(150);
     analogWrite(4, 255);
      delay(175);
  }
 else {
  digitalWrite (led1, LOW);//We turn the LED off
  }
    }