#define RED 23
#define YELLOW 22
#define GREEN 21
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
pinMode(RED, OUTPUT);
pinMode(YELLOW, OUTPUT);
pinMode(GREEN, OUTPUT);
}
void loop() {
// put your main code here, to run repeatedly:
digitalWrite(GREEN, HIGH);
Serial.println("Green Light is ON");
delay(5000);
digitalWrite(GREEN, LOW);
Serial.println("Green Light is OFF");
delay(600);
digitalWrite(YELLOW, HIGH);
Serial.println("Yellow Light is ON");
delay(4000);
digitalWrite(YELLOW, LOW);
Serial.println("Yellow Light is OFF");
delay(600);
digitalWrite(RED, HIGH);
Serial.println("Red Light is ON");
delay(3000);
digitalWrite(RED, LOW);
Serial.println("Red Light is OFF");
Serial.println("All OFF");
delay(6000);
}