#include <LiquidCrystal.h>
LiquidCrystal lcd(13, 12, 11, 10, 9, 8);
int up = A0;
int down = A1;
int out1 = 6;
int out2 = 7;
int volt = 50;

void setup() {
  lcd.begin(16, 2);
  lcd.setCursor(4, 0);
  lcd.print("WELCOME");
  delay(500);
  lcd.clear();
  pinMode(out1, OUTPUT);
  pinMode(out2, OUTPUT);
  pinMode(up, INPUT);
  pinMode(down, INPUT);
}

void loop() {
  lcd.setCursor(0, 0);
  lcd.print("Volt :");
  lcd.setCursor(7, 0);
  lcd.print(volt);
  digitalWrite(out1, HIGH);
  digitalWrite(out2, HIGH);
  delay(volt / 2);
  digitalWrite(out1, LOW);
  digitalWrite(out2, LOW);
  delay(volt / 2);

  if (volt < 60) {
    if (digitalRead(up) == HIGH) {
      delay(200);
      if (digitalRead(up) == LOW) {
        analogWrite(out1, volt);
        volt = volt + 1;
        delay(100);
      }
    }
  }

  if (volt > 50) {
    if (digitalRead(down) == HIGH) {
      delay(200);
      if (digitalRead(down) == LOW) {
        analogWrite(out2, volt); // Use out2 for "down" condition
        volt = volt - 1;
        delay(100);
      }
    }
  }

  // lcd.clear();
}