*3 WEEK : DHT11 Coding

For this 3rd week, i had move to find the coding for my project. I start with the Temperature & Humidity Sensor, DHT11. I search to the internet the basic coding for this sensor. Then i had found this coding, which is displaying the reading of sensor.

#include <DHT11.h> #include <Wire.h> #include <LCD.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); // Addr, En, Rw, Rs, d4, d5, d6, d7, backlighpin, polarity int pin = A0; DHT11 dht11(pin); double Fahrenheit(double celsius) { return ((double)(9 / 5) * celsius) + 32; } double Kelvin(double celsius) { return celsius + 273.15; } void setup() { lcd.begin(16, 2); lcd.backlight(); lcd.clear(); lcd.print("Humidity & temp"); delay(3000); lcd.clear(); lcd.print("Starting....."); delay(3000); } void loop() { int err; float temp, humi; if ((err = dht11.read(humi, temp)) == 0) { lcd.clear(); delay(500); lcd.setCursor(0, 0); lcd.print("Temp"); lcd.setCursor(0, 1); lcd.print("Humidity"); lcd.setCursor(9, 0); lcd.print(temp); lcd.print(" C"); lcd.setCursor(9, 1); lcd.print(humi); lcd.print(" %"); delay(10000); } else { lcd.println(); lcd.print("Error No :"); lcd.print(err); lcd.println(); } }

But then, when i run this coding, there is an error;

The error show that there is some line that Arduino cannot 'read'. This is because Arduino did not have the library.  

              #include <DHT11.h>

I had tried to solve the error by find the library for that coding, but there is no solution :( :( :(
So i had decided to find another coding and try to modified it.