int PinAlarm = 3;  
    int PinGetar =2;
    void setup()
    {     
      Serial.begin(9600);     
      pinMode(PinAlarm, OUTPUT);     
      pinMode(PinGetar, INPUT);
    
    }
      
    void loop() 
    {     
     
        long nilaigetar =nilai();    
        Serial.print(nilaigetar); 
        if(nilaigetar == 00){
           Serial.println(nilaigetar); 
           Serial.println("tidak ada getaran");
           digitalWrite(PinAlarm, LOW); 
           tone(8, 1000, 500);
        }else if(nilaigetar > 2500){
           Serial.println(nilaigetar); 
           Serial.println("getaran tinggi"); 
           tone(8, 1000, 200);
           digitalWrite(PinAlarm, HIGH);
        }
        delay(100); 
        Serial.println(""); 
    }

 long nilai(){
     delay(100);
     long nilaigetar=pulseIn (PinGetar, HIGH);
     return nilaigetar; 
 }// put your setup code here, to run once: