Arduino 蜂鸣器实验

代码

#define buzzer 3

int i = 0;
void setup()
{
  pinMode(buzzer, OUTPUT);
  digitalWrite(buzzer, LOW);

  Serial.begin(9600); // setup serial
}

void loop()
{
  digitalWrite(buzzer, HIGH);
  delay(1000);
  digitalWrite(buzzer, LOW);
  delay(1000);
}