#define BLYNK_TEMPLATE_ID "TMPL6sQ8Dpp8x"
#define BLYNK_TEMPLATE_NAME "Suhu"
#define BLYNK_AUTH_TOKEN "LXTstWXBUizjAeFTFLSNf9UikRNmShze"
#define BLYNK_PRINT Serial

#define ECHO_PIN 3
#define TRIG_PIN 2
#define pinBuzzer 5

#include <Servo.h>

char auth[] = BLYNK_AUTH_TOKEN ; //Auth Token
char ssid[] = "Wokwi-GUEST"; //nama hotspot yang digunakan
char pass[] = ""; //password hotspot yang digunakan


Servo myservo;
int rotasi = 90;
int interval = 0;

float readDistanceCM(){
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  int duration = pulseIn(ECHO_PIN, HIGH);
  return duration * 0.034/2;
}

void soundBuzzer(){
  if (interval < 500){
  tone (pinBuzzer, 250);
  }else
  if (interval > 500){
  tone (pinBuzzer, 100,800);
  };
}

void setup(){
  pinMode(TRIG_PIN, OUTPUT); pinMode(ECHO_PIN, INPUT);
  Serial.begin(115200); pinMode(pinBuzzer, OUTPUT);
  myservo.attach(9);
  myservo.write(90);
}

void loop(){
  tutupPalang();
  interval +=100;
  if (interval>1000) interval = 0;
}

void tutupPalang(){
  float jarak = readDistanceCM();
  if (jarak > 0 && jarak < 100 ){
    soundBuzzer();
    tutup();
  }else{
    buka();
  noTone(pinBuzzer);
  }
}

void tutup(){
  if (rotasi <= 90){
    myservo.write(rotasi);
    delay(100);
    rotasi--;
  }
  if (rotasi <= 0) rotasi = 0;
} 
  
void buka(){
  if(rotasi <= 90){
    myservo.write(rotasi);
    delay(100); 
    rotasi+=4;
  }
  if (rotasi >= 90) rotasi = 90;
}