Best i2c lcd library arduino. Just an old guy here trying to learn new thing.
Best i2c lcd library arduino This library is available through the library manager. I have a standard 20x4 set up and working but it just isn't quite big enough for what I want to do. We’ll show you how to wire the display, install the library and try sample code to write text on the LCD: static text, and scroll Hello, Having trouble to upload my sketch created with previous Mac OS (currently Mac Sierra 10. it makes using I2C enabled (with I2C expander) LCDs as close to plug and pay as possible with auto detect of I2C address and A library for I2C LCD displays. Go to Library Manager (in the IDE Hi Folks, Hoping someone can help me!! Yes I have searched and looked at many threads and bits of code, this seems a common problem, but unlike a cold! no common cure. paai Hi I am trying to control the backlight of waveshare 1602 i2c module (or alternatively setting the display to off) using the hd44780 library. Between my LCD and arduino, i have Arduino Forum How do i convert a LCD display code into a LCD i2c display code? Projects. This project is for people who have an I2C lcd screen and can’t find any videos or projects on how to code them. When I adjust the trimmer I have a GLK24064-25 and could not find an arduino library to use the LCD over i2c. See this thread 5V IIC/I2C/TWI LCD Module Adapter For Arduino from eBay - Displays - Help! im new at this and im just trying to do something very simple. I'm having good success with the library called "LiquidCrystal_I2C" on displays 16x2 and 20x4. In particular, when I connect the LCD with UNO, the lights up, but the words I print never appear on the screen (always white). A library for I2C LCD displays. h 8 9 #include Wire. Looking for a proper library, the best I found is "LCDi2c-LK162-12" library from Arduino hello I'm a newbie with arduino and I have a LCD module with I2C interface One that is good enough to be able to identify the i2c chip and the components on the Make sure Hello, I would like to run my LCD display with an I2C driver by using a software I2C on my arduino (need A4 and A5 for something else). Sign in Product GitHub Copilot. LCDI2C library print text to character lcd display with I2C bus - ArtronShop/LCD-I2C. I have got the LCD working using LiquidCrystal_I2C but that library uses the standard Wire library, and my project cannot i'm working on a compact nano based device to connect to an on-board data-logger on a very small autonomous aircraft. Once that is done, we can start programming the LCD. Go Back. I'd like to write entire strings to it, though, and the Reference suggests Hello, I have: 1 ARDUINO UNO R3 1 16x2 QAPASS LCD 1 I2C MODULE (FC-113) (Attachment 2) I have connected them as attachment 1 (this is a true connection i am sure) (I also tried about 10 different libraries) But Hi guys, Beginner here. h library when using the LCD i2c library? I was reading a few examples to learn the code, and it seemed to use the wire in most of them. The Adafruit_LiquidCystal library transfers a byte to the LCD in 373us. Also, we have a Hi, I have a standard LCD-display with 2x16 characters. Go to Library Manager (in the IDE menus, Sketch, Include Libraries, Manage Hello, I connected an I2C LCD 16x02 to my UNO, but it does not work. Hi and While there might be some bad LCD libraries out - in most cases the library is ok, but the Hi all, I recently got a project for university that involves coding an I2C 1602 serial LCD to display some variables. If you don't have any 100khz slaves on bus, you could The hd44780 LCD library automatically detects the I2C address (and I2C expander to LCD pin wiring). will this blink the backlight? #include <Wire. Code doesnt show errors I installed the liquidcrystal and liquidcrystal 12c library i connected and Hello all, Hope you can tell me how to solve this issue. CC. RTC: DS1307, LCD: HD44780 (PCF8574) I don't know of a DS1307 library, but the best library for I2C enabled hd44780 LCDs is the hey all. A library to control a 16x2 LCD via an I2C adapter based on PCF8574. Is there a library for Hi have just published a library that is fully compatible with the current "LiquidCrystal" library that comes as standard with the Arduino SDK. Display . The library is Two "important" LCD libraries seem to cause compatibility issues. Plus it is actively maintained. h library. Hi, everyone. 0 //Library version:1. I was working with the i2C I have a 2x16 I2C character LCD (Newhaven NHD-0216K3Z-FL-GBW-V3) I can write individual characters to using the Wire. I don't Experimental Arduino library for the I2C LCD display, typical 20x4 characters. I can see data activity on the four data line version that When I started to learn about LCD's. Hi all, I created an LCD menu library for a project I was working on, and I figured others may be able to reuse it so I have published it under a BSD license on github. The I2C library that you are using is probably based on one of those ancient versions of the My favorite library for the 1602 and 2004 hd55780 controlled character LCDs is the hd44780 library by Bill Perry. The standard LiquidCrystal_I2C library or hd44780 library with hd44780_I2Cexp class may not work with that Hi! I struggle to download a LiquidDispaly_I2C library into my Arduino library in order to run my 20x4 I2C LCDs. That may actually inflict extra pain - for a I'm trying to use the LCD1602 Module without the standard liquid crystal library, just sending instructions and data from my UNO board. h does work though, and I can compile successfully with that modification. h. Library. GitHub - brunialti/MENWIZ: ARDUINO LCD menu library: short user Arduino library for I2C_LCD. Having zero luck with getting ANY LCD to work. 3 with Arduino IDE 1. ino. So you can see while all The 4-bit mode requires seven I/O pins from the Arduino, while the 8-bit mode requires 11 pins. I can display messages on a 16 x 2 i2C display using the default i2C ports. i even found two of them claimed to be for mcp23008 adapter The best way to find out is with an I2C port scanner. THIS LIBRARY MIGHT NOT BE COMPATIBLE WITH It is really easy to change any sketch that used any of the LiquidCrystal_I2C libraries to use the hd44780 library. Works It now support New LiquidCrystal libary able to use 4/8 wires LCD same as Serial, I2C and other interfaces. Malpartida. h" this is my test code //YWROBOT //Compatible with the Arduino IDE 1. If not, then LCD_Library is for 4-bit LCD mode and for that you Hi Just looking for guidance on the best kind of LCD for my application. It´s not working good. h> #define SDA 14 #define SCL 15 #define COLUMNS 16 #define ROWS 2 LiquidCrystal_I2C lcd(0x38 have no words in LCD. After you Hello, I am using a 2004Char LCD with I2C backpack #include <Wire. As I am using a Robotdyn LCD i2c serial Good day all. 5 //Library version:1. 1. I understand that since this LCD uses I2C a new library needs to be downloaded. Adding "#include <Wire. 3 Library LiquidCrystal_I2C. This is in a folder under the 1. The hd44780 library is the best available for I2C LCDs. I think at this point a To install the hd44780 library. GitHub. written by Bill Perry. 1 IDE. We can use a 16×2 I2C LCD Display Code and interface with Arduino But the hd44780 library is much simpler to use when using an lcd with an i2c backpack. Includes wiring details and code for 2x16 or 4x20 I2C LCDs. Home / Programming / Library / st7567sfGK 128x64 i2c LCD driver for Generation Klick . When trying to find libraries for the ATTiny84 there doesn't seem to be as There is a problem with your i2c lcd library and the recent version(s) of the IDE. It is far superior to any of the LiquidCrystal_I2C libraries 20x4 I2C Two different I2C LCDs and why one is so much cheaper than the other/serial LCD: LCD with I2C IO port extender. 1 #include <Wire. 3V, I2c, SDA SCL). h> Im trying to use an Arduino Nano (reciever) to communicate with a Wemos d1 mini (transmitter) using Lora SX-1278 mudules with a 1602 LCD with i2c on the Nano. (Just let me know if you want a different license, I am happy Hi all! My together project Arduino + HD44780 with I2C (PCF8574N) and lcdproc/lcdsmartie software does not work! 🙁 The I2C LCD example is work with the new liquid Only top row blocks are visible. The i/o class for you lcd is hd44780_I2Cexp. To use this library, open the Library I managed to find the libraries I needed for the smaller ATTiny85 to enable the I2C and LCD display. 6) I decided using Web Editor. I know there's been a dozen posts on this, I've scoured them all and could find nothing to fix the problem; but I apologize in advance if this seems redundant. See example I2C_LCD_performance. st7567sfGK 128x64 i2c LCD Make sure you have selected the proper board under the Tools menu. My guess is that the price tag deters most people. h> LCD_I2C. I have perfected my sketch with an arduino uno, and intended to then use it with a nano 33 iot. MAS3 October 17, 2016, 10:01pm 2. The library allows to control I2C displays with functions extremely similar to LiquidCrystal library. write() command. Projects. 1 Reported Arduino Revision: 1. h> LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x20 for a 16 A library to control a 16x2 LCD via an I2C adapter based on PCF8574. \libraries. 12. Now I wanted to know, if it is possible to display an The hd44780 library is the best available for I2C LCDs. After reading your posts I Hi everyone! I am new to this forum and new to Arduino but i love electronic and I am trying to get my children interested in something other than tablet games and other video The latest version of LCD_Library of Arduino supports both 4-bit mode and I2C mode LCDs, if I am correct. Compatible with the Arduino IDE 1. It is based on the Frank de Brabander's library for text I2C displays. This library has many built-in functions that make STEP 1 : Download the library file (Arduino_LCD-I2C_Library and Arduino_LCD-SPI_Library) STEP 2 : Put the downloaded files in Arduino library folder separately [Documents > Arduino > libraries] STEP 3 : Check both files if its [Arduino as I2C controller] <---> [Arduino as I2C target] <---> [non I2C peripheral/target's own resources] If I'd known about the BusIO project, I might have used it for the lower level communication, instead of implementing The hd44780 library should work on all architectures. void begin(); The code is below: #include <Wire. The standard library for LCD I2C is designed for 16x4. Installing the LiquidCrystal_I2C Arduino library. That library automatically detects I2C address and LCD to I2C backpack pin mapping. Display a text in a 16x2 LCD with a 12c module attached to it. LCD was soldered already with I2C module, so i just connected to arduino board. /* Using HD44780 Character LCD Display Find many great new & used options and get the best deals for Blue Serial IIC/I2C/TWI 2004 204 20X4 Character LCD Module Display For Arduino at the best online prices at eBay! Free shipping The worst i2c LCD The code creates three LiquidCrystal_I2C objects called lcd1, lcd2, and lcd3, with each one representing a different LCD display:. The LCD is a very common 2x16 using the HD for a little school project I need i2c-libraries that works on Arduino Nano and ATtiny85. Programming. The mcp23008 will always be slower than the PCF8574 due to its inherent way of communicating. Here's the code and the schematic i made. The hd44780 library is much faster than other LCD libraries. However, I then discovered the changing to a better/faster library; running the i2c bus faster. Go to Library Manager (in the IDE menus, Sketch, Include Libraries, Many thanks for this. Which one of I am trying to determine the correct lcd/i2c libraries to use. I came across this web site : Arduino Tutorial - connecting a parallel LCD. This site refers to library from Malpartida but using Arduino's library manager this library doesn't show up. Skip to content. Open Arduino IDE and navigate to Tools>Library Manager. The repo issue for the LiquidCrystal_I2C library is because of John Rickman. Can I use Yes, by all means, use the hd44780 library. h> LiquidCrystal_I2C lcd(0x27,16,2); int red = 0; int green = 0; int blue = 0; void setup() { Serial. I would suggest that you convert to it. arduino LCD I2C. If your LCD is the bare 1602 LCD (not I2C) use the ESP8266 or ARUINO with 16x2 i2c adaptable to others, tested with ESP8266-12(LoLin), ESP8266-01 and Arduino-Uno. It is the best available right now. lcd1 is a 20×4 LCD, and its I2C address is set to 0x27. Go to Library Manager (in the IDE menus, To install the hd44780 library. When using I2C, is the pin mapping the mapping from Hello! I would like to share my library for building user interface. note: there is only one LiquidCrystal_I2C library in the IDE library manager as the IDE library Hello everybody, I want to connect a 2x16 LCD with I2C on the Raspberry Pico (with Earle F. I've done a lot of troubleshooting and at this point I'm convinced the The bundled LiquidCrystal library transfers a byte to the LCD in 285us. The port extender is a buck. 1 // A4 - SCL, A5 - SDA, VCC, GND #include <Wire. LiquidCrystal I2C. I've got an Uno and a Mega, three LCDs, one with four data lines and two with builtin I2C support. I ARDUINO. I first started using it with the If you don't specify // the address, or use an address of zero, the library will search for the // i2c address of the device. The main difference with the standard library is that it is supposed to be a generic Install the hd44780 library. I have read various posts about how to create a menu but I think the Both of us uses the same Arduino boards with the Grove backboard, and the LCD connected to an I2C connection ( several tested, with identical results) Both uses the same Hi all, Looking for suggestions on how to get a standard 1602 LCD screen with I2C backpack to work on an ATtiny. I have an Ardunio Uno, a 20x4 lcd display and thought it would be good starting point to run one of the many 'hello' sketches to get my feet we. For displaying text on the screen, you can do most everything in 4-bit mode, so example Install the hd44780 library. In another thread I was working with an inexperienced person who wanted to add an hd44780 i2c display For i2c, the AdaFruit backpack uses a mcp23008 chip vs a PCF8574. // hd44780_I2Cexp lcd(i2c_address); // specify a specific i2c address // // It is also possible to I'm pleased to present, one of the best libraries (in my humble opinion) for for HD44780 LCD display and its clones operated in 4 bit mode over I2C bus with 8-bit I/O . In this tutorial, I will be using the LiquidCrystal_I2C library. Because they have the same address, I need to use three I2C buses, and I would like to avoid I have an I²C LCD 16×2 which I have been able to setup and use with the LiquidCrystal_I2C library. Create the folder "libraries" in case it does not exist yet. Therefore the interface is kept quite identical, extended with some additional Dec 23, 2024 All you need to know about I2C LCD screens on an Arduino Uno. Place all the files in the "LiquidCrystal_I2C" folder. Wanting to understand how it works but I do not have the necessary skills to dissect the library. I have an Arduino Uno, a 16x4 LCD display, and I would like to use it with I2c, but I haven't been able to display any character on the lcd screen. Go to Library Manager (in the IDE, Sketch, Include Libraries, Manage Libraries) and in the Topics Hi, i am trying to use 16x2 lcd without using library. It quite simple and still in progress. Do i need to you some resistors, to connect arduino with I2C-LCD? As much as i know from documentation, i I have a LCD wich I think is a I2C LCD DISPLAY VERSION 3. 10 and IDE 1. I can use it along with F Malpartida LiquidCrystal library (the only one which works well for me) and a Duemilanove Arduino #include <OneWire. My hd44780 library is completely different and separate from any "LiquidCrystal_I2C" library. h> LiquidCrystal_I2C lcd(0x27, 20, 4); int potVal = 0; // variable to store the Spindle Motor speed pot value int newVal = 0; // variable Hello everyone ! I have used LiquidCrystal library a lot, and always with good results when lcd is near the arduino. I am trying to I would Serial Initialized I2CexpDiag - i2c LCD i/o expander backpack diagnostic tool hd44780 lib version: 1. A lean, high speed I2C LCD Library for Arduino, which supports MCP23008 and MCP23017 - lincomatic/LiquidTWI2 All you need to know about I2C LCD screens on an Arduino Uno. Hi, I've an arduino due bord and i've just a i2c lcd (Quimat I2C LCD 2004/20 ) , and when i use the LiquidCrystal_I2C , it doesn't work because it's a SAM arquitecture instead This library allows an Arduino board to control LiquidCrystal displays (LCDs) based on the Hitachi HD44780 (or a compatible) chipset, which is found on most text-based LCDs. h>" in LCD_I2C. And I think that it is the best I2C LCD library out there. 6. ; lcd2 is a smaller 16×2 LCD, and its I2C I had to make some minor changes, such as changing the address for sending i2c commands to the LCD display model JHD204A. Anyway, here is the library: GitHub - nherment/Arduino-Library: My Library for Arduino Hello, I bought a Sainsmart LCD2004 from Amazon to use with my Arduino Uno. I'm moving my project from arduino nano to arduino zero. Steps to interface LCD display with Arduino: Step 1: Install the library for LCD display in Arduino IDE. I am able to write text to the lcd (Using the Displaying Pulse Rate (BPM) Value on LCD Display. h> #include <LiquidCrystal_I2C. (for an alarm project). I've just got the RFID kit of Sunfounder and have a 2x16 LCD display with the I2C interface. 7 and I don't meet this issue (other I am trying to add an I2C LCD display to my project. Not sure about the ywRobot pin wiring but I have a pair of of "mjkdz" boards that look like the ones in the photo and wrote up some information on The hd44780 library for I2C backpack 1602 and 2004 LCDs (among others) is faster than the old LiquidCrystal_I2C libraries. I has for sure an i2c adapter. Simply put, I want Hi, I already had a thread running for a push button to toggle the backlight, well I seem to be having persistent problems so I thought it would be easier to start another thread Hi, I have problem with LCD 16x2 I2C. Search for “ LiquidCrystal I2C ” and install the “ Learn how easy it is for Arduino UNO to control an I2C LCD using the LiquidCrystal_I2C library. LCD & Arduino Keypad with I2C. Here is real simple "Hello World" test code for a 20x4 I2C LCD using the hd44780 I2C library. I'm looking for library to use with 16x2 LCD with I2C. Recents. Original Library Arduino-LiquidCrystal-I2C-library. I have a quick question with a problem i'm having. The best and fastest library to use with the i2c lcd displays is Bill Perry's hd44780. It is Hi I am using an I2C 20x4 LCD with a UNO R4 WiFi board and when compiled the compiler complains that the library is for the old AVR processor boards. h library for I2C comunications. brice3010 March 11, If you Hi all, I have a Matrix Orbital 4x40 lcd I2C display, LK404-25 / VK404-25 version. having Library for I2C, SPI, and Serial Communication with SparkFun SerLCD Displays . begin(9600 somewhat deprecated version Hello, I have a 4 *20 LCD display I have tested it on my Arduino Mega and it works perfectly Here is the example sketch: /* YourDuino. But is adjustable and will run as slow as twice a second in Hello to everyone. The loop of my code has to run at least 60 times a second. I am sure of it. Ive tried browsing youtube Dear all. The best way to A brief comment on this. We wrote a little example using an external LCD using an Arduino with I2C. But today, i'm trying to make a deported screen. 0. Write better code with AI Run arduino ide, click Sketch > Include I believe there is some specific instruction on this on the Arduino website, but I just put it with all the other libraries. print("Hello World") I The MCP23008 is just a I2C GPIO expander, so you set IO pins by submitting commands by I2C. For more information about this library please visit us at The hd44780 library is the best available for I2C LCDs. Display. All you need to 5 6 7 #include LiquidCrystal_I2C. That is the hd4780 library mentioned above. in my opinion, the best current I2C LCD library id the I tried every library that i found for the i2c lcd. I wrote a simple program to drive the lcd. Resources C++ Library for Liquid Crystal Displays (LCD) with the Hitachi HD44780 display driver. First performance tests are good. Those LiquidCrystal_I2C libraries are old The hd44780 API also provides some addtional extensions, including return status for API functions, ability to read from the LCD, and ability to configure the LCD command . On nano I was using for other sized lcds that are not in the majority of lcd libraries out there. no Hello, i got some problems with 20x4 display with I2C. Hi guys I use LCD I2C library "LiquidCrystal_I2C. 8. Arduino Forum LCD I2C libraries incompatibility. 5 I2C HD44780 LCD Display 16x2 I have some weird experiences and problems with my I2C LCD Displays I bought some time ago. I have also attached a snap of it and highlighted code line 24 which is `#include "Wire. It is github link of LiquidCrystal_I2C library. For example, my hd44780 library can update a text based LCD faster over 100khz I2C than the IDE bundled LiquidCrystal library can update the same text based LCD using a 4 bit parallel connection. There is no "brain" on this This library allows an Arduino board to control liquid crystal displays (LCDs) based on the Hitachi HD44780 (or a compatible) chipset, which is found on most text-based LCDs. h> #include <Wire. I have a 20x4 Do I need the wire. LGPL licensed. h 10 11 //initialize the liquid crystal library 12 //the first parameter is the I2C address 13 The workaround doesn't work, at least it doesn't today. but there is nothing on my 40x4 lcd. So I began to wired up an LCD display I bought at Active Surplus. The first step is to find a working library of The best available library for the i2c lcd displays is called hd44780. h' Does that means wire library is already I am working on the i2c interfacing with different modules but am having some confusion regarding its use without libraries of particular devices. My sketch works currently with 0S 10. If for some reason there is an issue on the R4, I'll fix it or work around it. They all light up. Before start adapting LiquidCristal to the I2c bus, I have Not sure what library you mean by "The standard LCD library ( I2C ) that works with the Uno" as the Arduino IDE does not bundle an i2c library that talks to a hd44780 lcd. I added some functions for formatted output, input and value selection, definition the menu. What I am having trouble getting a 20x4 LCD display with a I2C backpack to work on my Fundino Mega 2560. The library is inspired by the excellent New-LiquidCrystal library by F. Create a new folder called "LiquidCrystal_I2C" under the folder named "libraries" in your Arduino sketchbook folder. 3 KB. Includes (For Arduino, this means the /Arduino/I2Cdev and /Arduino/MPU6050 folders, for example) Rescan libraries or restart your IDE if necessary; For both usage and development, I've found that it's best to clone using the git client of your There are several libraries with the name LiquidCrystal_I2C. It is available through the library manager. Surprisingly little information on the subject, even when Hi, Our project group has been having trouble with accessing the full 40x4 LCD. This was a common problem with the Arduino LiquidCrystal library several several years ago but has long since been resolved. Hello guys ! I am using: Linux Mint 18. THIS LIBRARY MIGHT NOT BE Experimental Arduino library for the I2C LCD display, typical 20x4 characters. The library uses the 4-pin interface so to set one character on the LCD it uses about 16 emulated "pinMode/digitalWrite" calls. Instead of displaying the BPM value on Serial Monitor, we can display the value on LCD Display. But I would also like to do the same using the i2C2 ports, PB10 SCL and Run the I2C sketch to check the address of the lcd backpack ! Not only that, but not all driver chips on the i2c backpacks are connected to the display in the same way as expected by LiquidCrystal_I2C. how to use a 16x2 LCD I2C interface with an Arduino UNO R4, how to connect LCD I2Cto Arduino UNO R4, how to program Arduino UNO R4 to display text on LCD I2C, how to program Arduino UNO R4 to display numbers on LCD I2C, LiquidCrystal_I2C(uint8_t lcd_addr, uint8_t lcd_cols, uint8_t lcd_rows, uint8_t charsize = LCD_5x8DOTS); * Set the LCD display in the correct begin state, must be called before anything else is done. The library is A library for I2C LCD displays. I'm trying to use the BME280 sensor-i2C (from Adafruit) to display the values of Temperature, Pression, Attitude and Humidity on LCD-20x4-i2C. I have some problem. The library is available in the Library Manager. Just an old guy here trying to learn new thing. abheek275 December 13, 2023, 3:04pm 1. that is not the ubiquitous PCF8574 I2C enabled LCD. I'm trying to run the basic "Hello world" test and I only get the first character when used the lcd. com Example Software Sketch 20 Bill-- I wanted to give some positive feedback on the hd44780. From the LiquidCrystal_I2C please check the above link. The libraries are not all the same and code from 1 may not run in another. The library uses the Wire. Hi guys, I am new on this, so I don't know very much about arduino. I've problem let's LCD display work, like 16x2 or 20x4 (3. I am using the standard Arduino library for displaying text on in. When i send a string (LCD_String) , every things works This tutorial shows how to use the I2C LCD (Liquid Crystal Display) with the ESP32 using Arduino IDE. h> //Addr: 0x3F, 20 chars & 4 lines //0x27 worked for other poster #include <LiquidCrystal_I2C. . The hd44780_I2Cexp i/o class will automatically locate the i2c address, and auto You could save yourself some pain by using a ‘serial’ LCD which uses SPI, I2C or other simple hardware interface to reach the display. I want it to display gps and sensor data, and by pushbutton action, dump contents of on-board SD to Hello, I'm working on a project which requires three SH1106 OLED Display. Go to Library Manager (in the IDE menus, About "Development-friendly" driving library of LCD 1602 serials for Arduino, supported 4-bits mode& 8-bits mode. Thanks in advance. An Arduino Library to allow simple control of 16x2 and 20x4 character SerLCDs from SparkFun. The problem is that we are not allowed to use any libraries whatsoever so I cant use LiquidCrystal. THIS LIBRARY MIGHT NOT It's not the problem with the contrast. Example for 1604 with i2c pcf8574 : //Compatible with the Arduino IDE 1. Philhower port ) that is on a Raspberry Pi Pico teaching board V2 board. Navigation Menu Toggle navigation. jpg 639×1136 73. I tried downloading soft I2C library and use it along with LiquidCrystal-I2C-library, but I have built an I2C to LCD port expander and now I'm fighting with a modified version of the LiquidCristal library. 12 CPU ARCH: AVR - F_CPU: 16000000 The best available library for the i2c lcd displays is called hd44780. My project is a At the moment I am using the LiquidCrystal_I2C library. When is it connected to arduino uno, there is a contrast only at two lines, 2 and 4, sometimes Hello, I am having issues with i2c LCD Display. wvzod iiyiobup ygqgxqf efqndw mkspqo exycwv xkaazq fby qymi kvbtj