Rx

#include <Wire.h> // use Wire library for protocol i2c (A4 = SDA & A5 = SCL)
#include <LiquidCrystal_I2C.h> // use LiquidCrystal_I2C library for control LCD on i2c protocol
#include <VirtualWire.h> // use Virtual library for decode signal from Rx module

byte thermometer[8] = //icon for thermometer
{
  B00100,
  B01010,
  B01010,
  B01110,
  B01110,
  B11111,
  B11111,
  B01110
};

byte droplet[8] = //icon for droplet
{
  B00100,
  B00100,
  B01010,
  B01010,
  B10001,
  B10001,
  B10001,
  B01110,
};
byte hi[8]=    //icon for heat index
{
  0B00000,
  0B00000,
  0B10101,
  0B01110,
  0B11111,
  0B01110,
  0B10101,
  0B00000,
};                 //(addr, EN,RW,RS,D4,D5,D6,D7,BL,BLpol)
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); //change the address as per your I2C module
// Sensors
int humidity=0;
int temp=0;
int heat_index=0;
char MsgReceived[21];
int led = 13; //pin for LED

void setup()
{
  lcd.begin(20,4); // set up the LCD's number of columns and rows:
  lcd.backlight(); //backlight is now ON
  pinMode(led, OUTPUT);

  // VirtualWire
  // Bits per sec
  vw_setup(2000);
  // set pin for connect receiver module
  vw_set_rx_pin(11);
  // Start the receiver PLL running
  vw_rx_start();

  lcd.begin(20,4);   // initialize the lcd for 20 chars 4 lines, turn on backlight
  lcd.backlight(); // finish with backlight on
  lcd.createChar(1, thermometer);
  lcd.createChar(2, droplet);
  lcd.createChar(3,hi);
  lcd.clear(); // clear the screen

} // END void setup

void loop()
{
  uint8_t buf[VW_MAX_MESSAGE_LEN];
  uint8_t buflen = VW_MAX_MESSAGE_LEN;
  //Taking the data from the control base
  if (vw_get_message(buf, &buflen))
  {
    digitalWrite(led, HIGH);
    delay(100);
    int i;
    // Message with a good checksum received, dump it.
    for (i = 0; i < buflen; i++)
    {
      // Fill Msg Char array with corresponding
      // chars from buffer.
      MsgReceived[i] = char(buf[i]);
      //Serial.print(MsgReceived[i]);
    }

    sscanf(MsgReceived, "%d,%d,%d",&humidity, &temp,&heat_index); // Converts a string to an array
    digitalWrite(led, LOW);
    lcd_display();
    memset( MsgReceived, 0, sizeof(MsgReceived));// This line is for reset the StringReceived
  }
}
void lcd_display()
{ lcd.setCursor(1,0);
  lcd.print(" WEATHER STATION ");
  lcd.setCursor(4,1);
  lcd.print("TEMP");
  lcd.setCursor(9, 1);
  lcd.write(1);
  lcd.setCursor(11, 1);
  lcd.print(temp);
  lcd.write(0b11011111);
  lcd.print("C");
  lcd.setCursor(4,2);
  lcd.print("HUM");
  lcd.setCursor(9, 2);
  lcd.write(2);
  lcd.setCursor(11, 2);
  lcd.print(humidity);
  lcd.print("%");
  lcd.setCursor(4,3);
  lcd.print("HI");
  lcd.setCursor(9, 3);
  lcd.write(3);
  lcd.setCursor(11, 3);
  lcd.print(heat_index);
  lcd.write(0b11011111);
  lcd.print("C");
}