//Traffic Light Project for pico 
const int redPin1 = 2;     // Red LED 1 connected to digital pin 2
const int yellowPin1 = 3;  // Yellow LED of 1 connected to digital pin 3
const int greenPin1 = 4;   // Green LED of 1 connected to digital pin 4

const int redPin2 = 5;     // Red LED of 2 connected to digital pin 5
const int yellowPin2 = 6;  // Yellow LED of 2 connected to digital pin 6
const int greenPin2 = 7;   // Green LED of 2 connected to digital pin 7

const int redPin3 = 8;     // Red LED of 3 connected to digital pin 8
const int yellowPin3 = 9;  // Yellow LED 3 connected to digital pin 9
const int greenPin3 = 10;  // Green LED 3 connected to digital pin 10

void setup() {
  pinMode(redPin1, OUTPUT);
  pinMode(yellowPin1, OUTPUT);
  pinMode(greenPin1, OUTPUT);

  pinMode(redPin2, OUTPUT);
  pinMode(yellowPin2, OUTPUT);
  pinMode(greenPin2, OUTPUT);

  pinMode(redPin3, OUTPUT);
  pinMode(yellowPin3, OUTPUT);
  pinMode(greenPin3, OUTPUT);
}

  void loop() {
  // Traffic light 1
  digitalWrite(redPin2,HIGH);
  digitalWrite(redPin3,HIGH);
  digitalWrite(greenPin1, HIGH);
  delay(3000);

  digitalWrite(greenPin1, LOW);
  digitalWrite(yellowPin1, HIGH);
  delay(2000);

  digitalWrite(yellowPin1, LOW);
  digitalWrite(redPin1, HIGH);
  delay(2000);

  digitalWrite(yellowPin1, LOW);
  digitalWrite(redPin1, HIGH);
  digitalWrite(greenPin1, LOW);
  digitalWrite(redPin2,LOW);

  // Traffic light 2

  digitalWrite(greenPin2, HIGH);
  delay(3000);

  digitalWrite(greenPin2, LOW);
  digitalWrite(yellowPin2, HIGH);
  delay(2000);

  digitalWrite(yellowPin2, LOW);
  digitalWrite(redPin2, HIGH);
  delay(2000);

  digitalWrite(yellowPin2, LOW);
  digitalWrite(redPin2, HIGH);
  digitalWrite(greenPin2, LOW);
  digitalWrite(redPin1,LOW);

  // Control the third set of LEDs
  digitalWrite(redPin3,LOW);
  digitalWrite(redPin1,HIGH);
  digitalWrite(greenPin3, HIGH);
  delay(3000);

  digitalWrite(greenPin3, LOW);
  digitalWrite(yellowPin3, HIGH);
  delay(2000);

  digitalWrite(yellowPin3, LOW);
  digitalWrite(redPin3, HIGH);
  delay(2000);

  digitalWrite(yellowPin3, LOW);
  digitalWrite(redPin3, HIGH);
  digitalWrite(greenPin3, LOW);
  digitalWrite(redPin1,LOW);
  
}