const int Ledrojo = 11;        //1
const int Ledamarillo = 12;    //1
const int Ledverde = 13;       //1

const int ledrojo2 = 4;       //2
const int Ledamarillo2 = 2;   //2
const int Ledverde2 = 3;      //2
int estado;
int Boton = 7;

void setup() {
  pinMode(Ledrojo, OUTPUT);        //1
  pinMode(Ledamarillo, OUTPUT);    //1
  pinMode(Ledverde, OUTPUT);       //1

  pinMode(ledrojo2, OUTPUT);      //2
  pinMode(Ledamarillo2, OUTPUT);  //2
  pinMode(Ledverde2, OUTPUT);     //2 
  pinMode(Boton, INPUT);          

  Serial.begin(9600);             
}

void loop() {
  estado = digitalRead(Boton);
if (estado == LOW) {   
digitalWrite(Ledverde, HIGH); //1
digitalWrite(ledrojo2, HIGH); //2
Serial.println("Los autos pasan, las personas esperan.");
  } else {  
    delay(2000); //1
Serial.println("Los autos y las personas esperan.");
     digitalWrite(Ledverde, LOW); //1
     digitalWrite(ledrojo2, LOW); 
     digitalWrite(Ledamarillo, HIGH); //1
     digitalWrite(Ledamarillo2, HIGH); //2
     delay(3000); //1y2
     digitalWrite(Ledamarillo, LOW); //1
     digitalWrite(Ledamarillo2, LOW); //2

Serial.println("Los autos esperan y las personas pasan.");
     digitalWrite(Ledrojo, HIGH); //1
     digitalWrite(Ledverde2, HIGH); //2
     delay(3000); //2
     digitalWrite(Ledverde2, LOW); //2

Serial.println("Los autos y las personas esperan.");
     digitalWrite(Ledrojo, LOW);  //2
     digitalWrite(Ledamarillo, HIGH); //1
     digitalWrite(Ledamarillo2, HIGH); //2
     delay(3000); //1y2
     digitalWrite(Ledamarillo, LOW); //1
     digitalWrite(Ledamarillo2, LOW); //2

Serial.println("Los autos pasan y las personas esperan.");
     digitalWrite(ledrojo2, HIGH); //2
       } 
}