liquid crystal arduino library for the dfrobot i2c lcd displays brands

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The library allows to control I2C displays with functions extremely similar to LiquidCrystal library. THIS LIBRARY MIGHT NOT BE COMPATIBLE WITH EXISTING SKETCHES.

The second step is to add the libraries to your arduino ide, to do that you go to sketch-> include library -> add zip library then find it in files. If it works, you should get a message saying it worked.

This is a 20x4 Arduino compatible LCD display module with high speed I2C interface. It is able to display 20x4 characters on two lines, whitecharacterson blue background.

Generally, LCD display will run out of Arduino pin resource. It needs 6 digital pins and 2 power pin for a LCD display. If you want to build a robot project, it will be a problem with Arduino UNO and LCD display.

This I2C 20x4 LCD display module is designed for Arduino microcontroller. It is using I2C communication interface, With this I2C interface, only 2 lines (I2C) are required to display the information on any Arduino based projects. It will save at least 4 digital / analog pins on Arduino. All connector are standard XH2.54 (Breadboard type). You can connect it with jumper wire directly.

This 1602 LCD module has 8 I2C address in all, from 0x20 to 0x27. You can set one according to your requirements, avoiding the confliction of I2C address. And its contrast can be adjusted manually.

This board is able to be powered by 5V or 3.3V which make it compatible with both Arduino 101 or Arduino  DUE,  intel edison 3.3V system and standard Arduino UNO/Arduino Mega 5V system.

I have an I2C LCD screen provided with a Sunfounder kit and certainly built by DFRobot or such a constructor (there is nothing written on the LCD), and an Arduino Uno R3 copy.

My issue is when I use lcd.print() to write a string on the LCD, only the first character of the string is printed. I can only print on other positions by using setCursor but only one character at a time.

I tried to change libraries (https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library, the one supplied with the LCD...), It always behaves the same!

The hello world from DFRobot also doesn"t work properly (first char only, again) (please note to make it display something with my LCD I have to change the address from 0x20 to 27).

This type of LCD display is very widespread in Arduino projects but unfortunately consumes a lot of Inputs/Outputs, hence the interest of an I2C backpack allowing to reduce four-wire connections (SDA and SCL, ground and power supply) between Arduino and I2C display. It is also well known that the fewer the wires, the easier the connection.

The I2C interface on the back uses a 2.54mm impaction, which allows the use dupont connectors to make connections on breadboard (or directly on an Arduino).

The advantage of an I2C bus is that it allows you to connect several peripherals on the same bus ... as long as each peripheral has a unique address on the bus.

This display has jumpers for configuring its address on the bus between 0x20 and 0x27. A potentiometer on the back allows you to adjust the contrast of the display.

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Note: The boards tested use different signal and data pins than the default examples in the LCD Library. Our LCD Shield uses pin 8 for Register Select, Pin 9 for Enable, and pins 4, 5, 6, 7 for data

- connecting to Arduino pins 12, 11, 5, 4 , 3 and 2, respectively. You cannot change these pin connections, but must make sure your Sketch code specifies the actual pins being used:

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