int semred = 4; //vermelho - carro
int semgre = 5;//verde - carro
int semyel = 6;//amarelo - carro
int pgre = 7;//verde - pessoa
int pred = 8;//vermelho - pessoa
int bot = 3;//botao

void setup() {
  pinMode(semred, OUTPUT);
  pinMode(semgre, OUTPUT);
  pinMode(semyel, OUTPUT);
  pinMode(pgre, OUTPUT);
  pinMode(pred, OUTPUT);
  pinMode(bot, INPUT);
}

void loop() {
  digitalWrite(semred, LOW);
  digitalWrite(semgre, HIGH);
  digitalWrite(semyel, LOW);
  digitalWrite(pgre, LOW);
  digitalWrite(pred, HIGH);
  delay(5000);
  digitalWrite(semred, LOW);
  digitalWrite(semgre, LOW);
  digitalWrite(semyel, HIGH);
  digitalWrite(pgre, LOW);
  digitalWrite(pred, HIGH);
  delay(500);
  digitalWrite(semred, HIGH);
  digitalWrite(semgre, LOW);
  digitalWrite(semyel, LOW);
  digitalWrite(pgre, HIGH);
  digitalWrite(pred, LOW);
  delay(5000);

  boolean entrada = digitalRead(bot);
  if(entrada==1){
    digitalWrite(semgre, LOW);
    digitalWrite(semyel, HIGH);
    delay(500);
    digitalWrite(semyel, LOW);
    digitalWrite(semred, HIGH);
    delay(500);
    digitalWrite(pgre, HIGH);
    digitalWrite(pred, LOW);
    delay(1000);
    digitalWrite(pgre, LOW);
    digitalWrite(pred, HIGH);
    delay(500);
    digitalWrite(pred, LOW);
    delay(500);
    digitalWrite(pred, HIGH);
    delay(500);








  }
}