Arduino Projects Ideas - Buzzer Alarm

 Arduino Projects Ideas - Buzzer Alarm

Components:
Buzzer
Arduino UNO

Wiring:
Buzzer +ve → pin 8
Buzzer -ve → GND

Code:

void setup() {
  pinMode(8, OUTPUT);
}
void loop() {
  digitalWrite(8, HIGH);
  delay(500);
  digitalWrite(8, LOW);
  delay(500);
}