// Buzzer interfacing

#define Buzzer 4
void setup() {
  Serial.begin(115200);
  Serial.println("Hello,ESP32!");
  pinMode(Buzzer, OUTPUT);
}

void loop() {
  delay(1000);
  digitalWrite(Buzzer, HIGH);
  delay(1000); // 1000ms=1s
  digitalWrite(Buzzer, LOW);

}