#include <LiquidCrystal_I2C.h>

int BUZZ1 = 25; //30-45 khz
int BUZZ2 = 26; //45-50 khz
int buttonPin = 4;
int buttonState;
long ran;
long run;
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup ()
{
  pinMode (BUZZ1, OUTPUT);
  pinMode (BUZZ2, OUTPUT);
  pinMode (buttonPin, INPUT_PULLDOWN);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0,0);
}

void loop()
{
  buttonState = digitalRead(buttonPin);
  if (buttonState == HIGH){
    for (ran = 16; ran < 255; ran = ran + 16)
    for (run = 500; run < 3000; run = run + 100)
    ran = random();
    run = random();
    if (ran == 16){
      dacWrite(BUZZ1, 16);
      //digitalWrite (BUZZ1, HIGH);
      lcd.setCursor(0,0);   
      lcd.print("Buzz 1 nyala 16");
      Serial.println("Buzz 1 nyala 16");
      delay (500);
    }
    if (ran == 32){
      dacWrite(BUZZ2, 32);
      //digitalWrite (BUZZ2, HIGH);
      lcd.setCursor(0,0);   
      lcd.print("Buzz 2 nyala 32");
      Serial.println("Buzz 2 nyala 32");
      delay (1000);
    }
    if (ran == 64){
      dacWrite(BUZZ1, 64);
      //digitalWrite (BUZZ1, HIGH);

      lcd.setCursor(0,0);   
      lcd.print("Buzz 1 nyala 64");
      Serial.println("Buzz 1 nyala 64");
      delay (1500);
    }
    if (ran == 128){
      dacWrite(BUZZ2, 128);
      //digitalWrite (BUZZ2, HIGH);
      lcd.setCursor(0,0);   
      lcd.print("Buzz 2 nyala 128");
      Serial.println("Buzz 12 nyala 128");
      delay (2000);
    }
    if (ran == 5){
      dacWrite(BUZZ1, 192);
      //digitalWrite (BUZZ1, HIGH);
      lcd.setCursor(0,0);   
      lcd.print("Buzz 1 nyala 192 ");
      delay (2500);
   }
   if (ran == 6){
      dacWrite(BUZZ2, 255);
      //digitalWrite (BUZZ2, HIGH);
  
      lcd.setCursor(0,0);   
      lcd.print("Buzz 2 nyala 255");
      delay (3000);
   }
  }
  digitalWrite (BUZZ1, LOW);
  digitalWrite (BUZZ2, LOW);
}


//deklarasi dac, 0-255, tambah 16
//deklarasi durasi, 500-3000. tambah 100
//acak per deklarasi
//https://dronebotworkshop.com/esp32-dac/