#define red_led 23
#define green_led 18
#define yellow_led 19

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  
// unsigned char red_led = 23;
// unsigned char yellow_led = 18;
// unsigned char green_led = 19;


pinMode(red_led, OUTPUT);
pinMode(green_led, OUTPUT);
pinMode(yellow_led, OUTPUT);
}

void loop() {
  digitalWrite(red_led, HIGH);
  digitalWrite(green_led,HIGH);
  digitalWrite(yellow_led,HIGH);
 
   delay(1000);

   digitalWrite(red_led, LOW);
   digitalWrite(green_led, LOW);
   digitalWrite(yellow_led, LOW); 

   delay(1000);


int sensorValue = digitalRead(18);
  Serial.print("Digital Value:");Serial.println(sensorValue);
  delay(3000); 
  
}