#include <LiquidCrystal.h> // Библиотека дисплей


LiquidCrystal lcd(12, 11, 10, 9, 8, 7);


int bovb = 40;
const int PIN_RED = 20;
const int PIN_GREEN = 21;
const int switchPin = 4;






void setup() {
  pinMode(switchPin, INPUT);
  digitalWrite(switchPin, HIGH);
  lcd.begin(16, 2);
  pinMode(PIN_RED, OUTPUT);
  pinMode(PIN_GREEN, OUTPUT);
  pinMode(18, OUTPUT);
  Serial.begin(9200);
  Serial.println("Start");
}

void loop() {
  int switchState = digitalRead(switchPin);

  if (switchState == LOW) {
      lcd.print("______00:" + String(bovb) + "______");
      delay(1000);
      lcd.clear();
      bovb = bovb - 1;
      delay(300);
      delay(bovb);
      tone(18, 600);
      setColor(255, 0);
      delay(bovb);
      noTone(18);
      setColor(0, 0);

  } else {
    
  }

  if (bovb == 0) {
    lcd.print("Boom");       
    setColor(0, 0);
    setColor(0, 255);
    tone(18, 1000);
    delay(1000);
    noTone(18);
    Serial.println("Boom");
    

  }
}

void setColor(int redValue, int greenValue) {
  analogWrite(PIN_RED, redValue);
  analogWrite(PIN_GREEN, greenValue);

}