Prototype - Alarm Device Using Human Touch Sensor (KY-036)

// ARDUINO PROJECTS BY R
// Author: Rucksikaa Raajkumar
// https://arduinoprojectsbyr.blogspot.com/2019/10/17-alarm-device-using-human-touch.html
const int sensor = 6;
const int buzzer = 3;
const int green = 4;
const int red = 5;
int val = 0;
void setup() {
  pinMode (sensor, INPUT);
  pinMode (buzzer, OUTPUT);
  pinMode (green, OUTPUT);
  pinMode (red, OUTPUT);
}

void loop() {
  val = digitalRead (sensor);
  if (val == HIGH){
    digitalWrite (red, HIGH);
    digitalWrite (green, LOW);
    digitalWrite (buzzer, HIGH);
  }else{
    digitalWrite (red, LOW);
    digitalWrite (green, HIGH);
    digitalWrite (buzzer, LOW);
  }
}