Temperature 🌡️Monitor Using Arduino Uno ||Nokia 5110 Display ||DHT11 Sensor.

                                                     
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Program Code :-

#include <SPI.h>                                 // include SPI library
#include <Adafruit_GFX.h>             // include adafruit graphics library
#include <Adafruit_PCD8544.h>    // include adafruit PCD8544 (Nokia 5110) library
#include <DHT.h>                           // include DHT library code

// Nokia 5110 LCD module connections (CLK, DIN, D/C, CS, RST)
Adafruit_PCD8544 display = Adafruit_PCD8544(7, 6, 5, 4, 3);

#define DHTPIN  A0           // DHT11 data pin is connected to Arduino analog pin 0
#define DHTTYPE DHT11        // DHT11 sensor is used
DHT dht11(DHTPIN, DHTTYPE);  // configure DHT library

char temperature[] = "00.0 C";
char humidity[]    = "00.0 %";

void setup()
{
  delay(1000);  // wait 1 second
  
  // initialize the display
  display.begin();
  // initialize the DHT library
  dht11.begin();

  // you can change the contrast around to adapt the display
  // for the best viewing!
  display.setContrast(50);

  display.clearDisplay();   // clear the screen and buffer

  display.drawFastHLine(0, 23, display.width(), BLACK);

  display.setTextSize(1);
  display.setTextColor(BLACK, WHITE);
  display.setCursor(6, 0);
  display.print("TEMPERATURE:");
  display.setCursor(15, 28);
  display.print("HUMIDITY:");
  display.display();
}

// main loop
void loop()
{
  // read humidity
  byte RH = dht11.readHumidity();
  // read temperature in degree Celsius
  byte Temp = dht11.readTemperature();

  // update temperature and humidity arrays
  temperature[0] = Temp / 10 + '0';
  temperature[1] = Temp % 10 + '0';
  humidity[0]    = RH   / 10 + '0';
  humidity[1]    = RH   % 10 + '0';

  // print temperature
  display.setCursor(24, 12);
  display.print(temperature);
  // print humidity
  display.setCursor(24, 40);
  display.print(humidity);
  // print degree symbol ( ° )
  display.drawRect(50, 12, 3, 3, BLACK);
  // now update the display
  display.display();

  delay(1000);  // wait 1 second
  

}