dfrobot i2c lcd displays quotation

This is another great I2C 16x2 LCD display compatible with Gadgeteer modules from DFRobot. With limited pin resources, your project will quicly run out of resources using normal LCDs. With this I2C interface LCD module, you only need 2 lines (I2C)to display the information.If you already have I2C devices in your project, this LCD module actually cost no more resources at all. The adress can be set from 0x20-0x27. Fantastic for Arduino or gadgeteer based projects.

Hello friends welcome back to Techno-E-solution, In previous video we see how to interface LCD 16×2 to Arduino Uno, but there are very complicated circuits, so in this tutorial, I"ll show you how to reduce circuitry by using I2C module which is very compact & easy to connection. Simply connect I2C module with LCD parallel & connect I2C modules 4 pins to Arduino. I2C module has 4 output pins which contains VCC, GND, SDA, SCL where 5V supply gives to I2C module through VCC & GND to GND of Arduino. SDA is a data pin & SCL is clock pin of I2C module. To interface LCD and I2C with Arduino we need Liquid Crystal I2C Library in Arduino IDE software.

I was going to inquire here for help with the DFRobot I2C LCD Arduino library, but I solved my problem. So If you are having issues with the DFRobot I2C LCD read on …

The library linked to on the Robotshop shopping page for the DFRobot I2C / TWI LCD1602 Module part #RB-Dfr-69 did not work well with the Arduino Uno. The Uno did not properly initialize the LCD with the provided library. It may be intermitant or not work at all. Mine would work every so other Arduino “reset”, weird.

You can check your current Arduino libraries to see if you have the corrected LiquidCrystal_I2C library. Open the LiquidCrystal_I2C.cpp file, check the the Void …::begin section of code …

The library above will cause the LCD to work intermitantly, sometimes not at all, the correct Library (found at the DFRobot site, see below) shifts the bytes to the left …

My LCD projects are now working fine with the new libraries, so if you are having problems with getting the DFRobot I2C LCD to work check your libraries and update your library at the DFRobot LiquidCrystal_I2C library site.

Module with LCD display 16x2 characters with blue backlight. It is supplied with the voltage from 3.3 V to 5 V and communicates via the I2C interface. The display has adjustable backlight brightness and is controlled using a dedicated library. The Wiki page contains the manual and sample programs.

Gravity I2C 16x2 Arduino LCD with RGB backlight display module comes with RGB full colour backlight, which has 16 million kinds of colour. Usually, Arduino LCD display projects will run out of pin resources easily, especially with Arduino Uno. And it is also very complicated with the wire soldering and connection. This I2C 16x2 LCD Screen is using an I2C communication interface. It means it only needs 4 pins for the LCD display: VCC, GND, SDA, SCL. It will saves at least 4 digital / analogue pins on Arduino. And Gravity interface make it easier to use with Gravity: IO expansion shield. Operating voltage range from 3.3V to 5V

This new LCD from DFRobot is a Gravity I2C 16x2 Arduino LCD with RGB Font Display which uses universal Gravity I2C interface, it means only two communication lines, you can realize communication and backlight control. The LCD screen can display 2x16 characters, support screen scrolling, cursor movement and other functions. Through dedicated Arduino library, you can complete all the design without cumbersome wiring and complex code.

If you googled around a bit and really did look for a day like you said, you would have seen that there are many different libraries all called "LiquidCrytal_I2C" by several different authors and they work differently.

You would have seen many i2c LCD threads with comments by floresta and myself about this and how to work around various issues as well as specific recommend libraries that work and where to get them, including in this thread. For a while there it seemed like a new thread about this was starting nearly every day. There are MANY of these types of threads.

In fact this issue as well as the confusion over multiple i2c lcd backpack libraries using the name LiquidCrystal_I2C as well as wanting an easier to install and use i2c lcd solution is what drove me to create the hd44780 library package.

Keep in mind that the LiquidCrystal_I2C library in the IDE library manager (which is what the thread was about) only works on certain PCF8574 backpacks. So if you change or replace your backpack, the new backpack may not work with the library.

Some libraries like fm"s LiquidCrystal_I2C i/o class library are configurable but users often struggle with getting that library installed correctly and then getting the configuration parameters correct.