Guess what this does

alarmclock.ino

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Servo.h>

const int ledPin = 13; //pin 13 built-in led
const int soundPin = A0; //sound sensor attach to A0
int temporal = 0;
const int sweetspotdown = 150; // change this to the sweetspot value
int value = 0;
const int silenceup = 350;
const int silencedown = 290;
const int silence = 320;

const int alarmthreshold = 100;
const int alarmtrigger = 400;

const int volumeup = 15;
const int volumedown = 10;
long int contador = 0;


int thresholdup = 600;
int pinvalue =0;

const int mydelay = 100; // 50 ms

Servo myservo;


LiquidCrystal_I2C lcd(0x3f, 20, 4);


/*
 * 
 * 

 150 mid value en 3V
 
 * 
 */



void setup()
{
pinMode(ledPin, OUTPUT);
myservo.write(0);
  Serial.begin(115200); //initialize serial
  myservo.attach(4,700,2300); // pin 4
  // lcd crap

  lcd.init();                      // initialize the lcd
  // Print a message to the LCD.
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("ALARM CLOCK");
  lcd.setCursor(0, 1);
  lcd.print("(C) jci");
  myservo.write(150);
  
digitalWrite(ledPin, LOW);
         myservo.write(0);
         delay(1000);
         digitalWrite(ledPin, HIGH);
         myservo.write(150);
         delay(1000);
         myservo.write(0);

}

void loop()
{

  while (true)
  {
    lcd.setCursor(0, 0);
    lcd.print("NOISE LEVEL      ");

    pinvalue = analogRead(soundPin);
   
    value = abs(pinvalue - silence); // arduino says fuck math!

    if (value > alarmthreshold)
    {
      // things that happen when value above threshold
      contador += volumeup;
    }
    else
    { 
      // things that happen when value below threshold
      contador -= volumedown;
      
    }

    if (contador <0 ) contador =0; 


    if (contador > alarmtrigger)
    {
      lcd.setCursor(0, 0);
      lcd.print("BITCH BETTUH     ");
      lcd.setCursor(0, 1);
      lcd.print("HAVE MY MONEY    ");      
      for (int temp=0; temp<10; temp++)
      {
         myservo.write(0);
         delay(2000);
         myservo.write(150);
         delay(2000);
      }
         myservo.write(0);
      
      contador = 0;
    }

    /*
    Serial.print(value);
   Serial.print(",");
    Serial.println(abs(contador));
//    Serial.print(",");
  //  Serial.println(pinvalue);
*/

    if (contador == 0) 
    {
      lcd.setCursor(0, 1);
      lcd.print("                ");      
    }


    if ((contador > 0) && (contador<alarmtrigger/4))
    {
      lcd.setCursor(0, 1);
      lcd.print("XXXX            ");      
    }

    if ((contador> alarmtrigger/4) && (contador<alarmtrigger/2))
    {
      lcd.setCursor(0, 1);
      lcd.print("XXXXXXXXX       ");      
    }
    if ((contador> alarmtrigger/2) && (contador<alarmtrigger*0.75))
    {
      lcd.setCursor(0, 1);
      lcd.print("XXXXXXXXXXXXX   ");      
    }

    
    delay(mydelay); // end of cycle
  }

}