// ESP32 Traffic Light Simulation

const int redPin = 2;    // Red LED pin
const int yellowPin = 4; // Yellow LED pin
const int greenPin = 5;
const int r2 = 3;
const int y2 = 6;
const int g2 = 7;  // Green LED pin

void setup() {
  pinMode(redPin, OUTPUT);
  pinMode(yellowPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(r2, OUTPUT);
  pinMode(y2, OUTPUT);
  pinMode(g2, OUTPUT);
  
}

void loop() {
  // Red light
  digitalWrite(redPin, HIGH);
  digitalWrite(yellowPin, LOW);
  digitalWrite(greenPin, LOW);
  digitalWrite(r2, LOW);
  digitalWrite(y2, LOW);
  digitalWrite(g2 , HIGH);

  delay(5000);  // 5 seconds

  // Red and yellow lights (transition)
  digitalWrite(redPin, LOW);
  digitalWrite(yellowPin, HIGH);
  digitalWrite(greenPin, LOW);
  digitalWrite(r2, LOW);
  digitalWrite(y2, HIGH);
  digitalWrite(g2, LOW);
  delay(2000);  // 2 seconds

  // Green light
  digitalWrite(redPin, LOW);
  digitalWrite(yellowPin, LOW);
  digitalWrite(greenPin, HIGH);
  digitalWrite(r2, HIGH);
  digitalWrite(y2, LOW);
  digitalWrite(g2, LOW);
  delay(5000);  // 5 seconds

  // Yellow light (transition)
  digitalWrite(redPin, LOW);
  digitalWrite(yellowPin, HIGH);
  digitalWrite(greenPin, LOW);
  digitalWrite(r2, LOW);
  digitalWrite(y2, HIGH);
  digitalWrite(g2, LOW);
  delay(2000);  // 2 seconds
}