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

#define DHTPIN 2
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

LiquidCrystal_I2C lcd(0x27, 20, 4);

byte x10[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x07, 0x07};
byte x11[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x1C, 0x1C, 0x1C};
byte x12[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x1F, 0x1F};
byte x13[8] = {0x07, 0x07, 0x07, 0x07, 0x07, 0x1F, 0x1F, 0x1F};
byte x14[8] = {0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1F, 0x1F, 0x1F};
byte x15[8] = {0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C};
byte x16[8] = {0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07};
byte x17[8] = {0x1F, 0x1F, 0x1F, 0x07, 0x07, 0x07, 0x07, 0x07};
byte x18[8] = {0x1F, 0x1F, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x00};
byte x19[8] = {0x1F, 0x1F, 0x1F, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C};
// byte x20[8] = {0x1F, 0x1F, 0x1F, 0x07, 0x07, 0x07, 0x07, 0x07};

void setup() {
    lcd.init();  
    lcd.backlight();  
    dht.begin();  

    lcd.createChar(0, x10);
    lcd.createChar(1, x11);
    lcd.createChar(2, x12);
    lcd.createChar(3, x13);
    lcd.createChar(4, x14);
    lcd.createChar(5, x15);
    lcd.createChar(6, x16);
    lcd.createChar(7, x17);
    lcd.createChar(8, x18);
    lcd.createChar(9, x19);
    // lcd.createChar(10, x20);
}

void loop() {
    float temperature = dht.readTemperature();  

    if (isnan(temperature)) {
        lcd.setCursor(0, 0);
        lcd.print("Error reading");
        lcd.setCursor(0, 1);
        lcd.print("sensor!");
        return;
    }

    lcd.clear();  

    int tempInt = (int)temperature;  
    int tempDecimal = (int)((temperature - tempInt) * 10);  

    displayNumber(tempInt / 10, 0, 3);  
    displayNumber(tempInt % 10, 0, 7);  

    lcd.setCursor(11, 3);
    lcd.write(byte(2));  

    displayNumber(tempDecimal, 0, 13);  

    lcd.setCursor(17, 1);
    lcd.print("C");  

    delay(1000);  
}

void displayNumber(int num, int r, int c) {
    lcd.setCursor(c, r);
    switch(num) {
        case 0: 
            lcd.write(byte(9)); 
            lcd.write(byte(8));
            lcd.write(byte(7)); 
            lcd.setCursor(c, r + 1); 
            lcd.write(byte(5)); 
            lcd.print(" ");
            lcd.write(byte(6)); 
            lcd.setCursor(c, r + 2); 
            lcd.write(byte(5)); 
            lcd.print(" ");
            lcd.write(byte(6));
            lcd.setCursor(c, r + 3); 
            lcd.write(byte(4)); 
            lcd.write(byte(2));
            lcd.write(byte(3)); 
            break;
        case 1: 
            lcd.write(byte(8)); 
            lcd.write(byte(7)); 
            // lcd.print(" ");
            lcd.setCursor(c, r + 1); 
            lcd.print(" "); 
            lcd.write(byte(6));
            // lcd.print(" ");
            lcd.setCursor(c, r + 2); 
            lcd.print(" "); 
            lcd.write(byte(6));
            // lcd.print(" ");
            lcd.setCursor(c, r + 3); 
            lcd.write(byte(2)); 
            lcd.write(byte(3));
            lcd.write(byte(2)); 
            break;
        case 2: 
            lcd.write(byte(8)); 
            lcd.write(byte(8)); 
            lcd.write(byte(7));
            lcd.setCursor(c, r + 1); 
            lcd.print(" ");
            lcd.print(" ");
            lcd.write(byte(6));
            lcd.setCursor(c, r + 2); 
            lcd.write(byte(9)); 
            lcd.write(byte(8));
            lcd.write(byte(8));
            lcd.setCursor(c, r + 3); 
            lcd.write(byte(4)); 
            lcd.write(byte(2));
            lcd.write(byte(2)); 
            break;  
        case 3: 
            lcd.write(byte(8));
            lcd.write(byte(8));
            lcd.write(byte(7)); 
            lcd.setCursor(c, r + 1);
            lcd.write(byte(2));
            lcd.write(byte(2));
            lcd.write(byte(3));
            lcd.setCursor(c, r + 2); 
            lcd.print(" ");
            lcd.print(" "); 
            lcd.write(byte(6));
            lcd.setCursor(c, r + 3); 
            lcd.write(byte(2)); 
            lcd.write(byte(2));
            lcd.write(byte(3)); 
            break;
        case 4:
            lcd.write(byte(5)); 
            lcd.print(" ");
            lcd.write(byte(6)); 
            lcd.setCursor(c, r + 1); 
            lcd.write(byte(4)); 
            lcd.write(byte(2)); 
            lcd.write(byte(3)); 
            lcd.setCursor(c, r + 2); 
            lcd.print(" ");
            lcd.print(" "); 
            lcd.write(byte(6));
            lcd.setCursor(c, r + 3); 
            lcd.print(" ");
            lcd.print(" "); 
            lcd.write(byte(6));
            break;  
        case 5:
            lcd.write(byte(9)); 
            lcd.write(byte(8));
            lcd.write(byte(8));
            lcd.setCursor(c, r + 1); 
            lcd.write(byte(4)); 
            lcd.write(byte(2)); 
            lcd.write(byte(2)); 
            lcd.setCursor(c, r + 2); 
            lcd.print(" "); 
            lcd.print(" "); 
            lcd.write(byte(6));
            lcd.setCursor(c, r + 3); 
            lcd.write(byte(2)); 
            lcd.write(byte(2));
            lcd.write(byte(3)); 
            break;  
        case 6:
            lcd.write(byte(9)); 
            lcd.write(byte(8));
            lcd.write(byte(8));
            lcd.setCursor(c, r + 1); 
            lcd.write(byte(5)); 
            lcd.print(" "); 
            lcd.print(" ");    
            lcd.setCursor(c, r + 2); 
            lcd.write(byte(9)); 
            lcd.write(byte(8));
            lcd.write(byte(7)); 
            lcd.setCursor(c, r + 3); 
            lcd.write(byte(4));
            lcd.write(byte(2));
            lcd.write(byte(3)); 
            break;  
        case 7: 
            lcd.write(byte(8)); 
            lcd.write(byte(8)); 
            lcd.write(byte(7));
            lcd.setCursor(c, r + 1); 
            lcd.print(" ");
            lcd.print(" "); 
            lcd.write(byte(6)); 
            lcd.setCursor(c, r + 2); 
            lcd.print(" ");
            lcd.print(" "); 
            lcd.write(byte(6)); 
            lcd.setCursor(c, r + 3); 
            lcd.print(" ");
            lcd.print(" ");
            lcd.write(byte(6)); 
            break;  
        case 8: 
            lcd.write(byte(9)); 
            lcd.write(byte(8));
            lcd.write(byte(7)); 
            lcd.setCursor(c, r + 1); 
            lcd.write(byte(4));
            lcd.write(byte(2)); 
            lcd.write(byte(3));  
            lcd.setCursor(c, r + 2); 
            lcd.write(byte(5));
            lcd.print(" ");
            lcd.write(byte(6));
            lcd.setCursor(c, r + 3); 
            lcd.write(byte(4));
            lcd.write(byte(2)); 
            lcd.write(byte(3)); 
            break;  
        case 9: 
            lcd.write(byte(9)); 
            lcd.write(byte(8));
            lcd.write(byte(7));
            lcd.setCursor(c, r + 1); 
            lcd.write(byte(5));
            lcd.print(" ");
            lcd.write(byte(6));
            lcd.setCursor(c, r + 2); 
            lcd.write(byte(8)); 
            lcd.write(byte(8));
            lcd.write(byte(7));
            lcd.setCursor(c, r + 3); 
            lcd.write(byte(2));
            lcd.write(byte(2));
            lcd.write(byte(3)); 
            break;  
        case 11: 
            lcd.setCursor(c, r + 1); 
            lcd.write(byte(7)); 
            lcd.setCursor(c, r + 2); 
            lcd.write(byte(7)); 
            break; 
    } 
}