int green = 2;
int yellow = 3;
int red = 4; 

//button
int btnPedestrian = 6;  




void setup() {
  Serial.begin(9600);

  // LED pins to output
  pinMode(green , OUTPUT);
  pinMode(yellow, OUTPUT);
  pinMode(red , OUTPUT);

  // button to input
  pinMode(btnPedestrian, INPUT);

  

  
}

  void traffic() {
  digitalWrite(red, 1);
  delay(5000);
  digitalWrite(red, 0);
  digitalWrite(yellow, 1);
  delay(2000);
  digitalWrite(yellow, 0);
  digitalWrite(green, 1);
  delay(10000);
  digitalWrite(green, 0);
  }
  


void loop() {
  // put your main code here, to run repeatedly:
  int readbtn = digitalRead(btnPedestrian);

  Serial.println(readbtn);




//delay(1000);


 if(readbtn == 1) {
  digitalWrite(red, 1);
  delay(5000);
  digitalWrite(red, 0);
}
else {
  traffic();
}

}