Can you help me with this?

Projects Networking, Protocols, and Devices
1

I'm new to Arduino program and Arduino forum so i don't know how to post but this is the best i can do.
In few days i have a school competition and I'm using Arduino Uno, I'm gonna need LCD display on the competiton so i wanted to start with a basic program, i found a guy, got the libraries and everything, copied the program, but i keep getting this error, im using a converter(I don't know how it is called but the thing that gets 16 pins from LCD in 4) and i tried everything i could, any ideas?

#include <Wire.h>

#include <LiquidCrystal.h>

LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);

void setup() {
lcd.begin(16.2);
lcd.clear();
lcd.print('Hello World!');
}

This report would have more information with
"Show verbose output during compilation"
enabled in File > Preferences.
Arduino: 1.0.6 (Windows NT (unknown)), Board: "Arduino Uno"
sketch_feb26a:5: error: 'LiquidCrystal_I2C' does not name a type
sketch_feb26a.ino: In function 'void setup()':
sketch_feb26a:8: error: 'lcd' was not declared in this scope

lcd.ino (194 Bytes)

2

I'm new to Arduino program and Arduino forum so i don't know how to post but this is the best i can do.

There is a sticky post at the top of the topic ("How to use this forum"). If you read it you know how to post here.

You failed to use code tags as was explained in the above mentioned sticky post.

#include <LiquidCrystal.h>

LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);

If you use the LiquidCrystal_I2C class you should include the corresponding library "LiquidCrystal_I2C.h" (maybe you have to install it first using the library manager of the IDE).

3

It sounds like you started late with your project. Start by getting the Arduino cookbook and reading it. Also on line there are many videos etc showing the Arduino and how to do what you want. This will help you understand what you are trying to do.

4

You included wrong library.
See the complete guide to LCD I2C with Arduino. This explain code line by line