Arduino Stack Exchange
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Questions tagged [lcd]

LCD stands for "Liquid Crystal Display" and is commonly known as a screen. The tag should be used for questions related to LCD display.

LCD stands for "Liquid Crystal Display" and is commonly known as a screen. The tag should be used for questions related to LCD display as opposed to LED displays. LCD displays have to have a backlight in order to be visible. Their size can range from small 16x2 modules all the way up to full-size televisions.

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Is there a color LCD display for an arduino?

I currently have a Mega2560 with the LCD4884 Shield. The Shield is good for putting out text and simple pixel images. But I am wondering if there is something that has a full range of colours that would work with the Arduino? The screen size would…
Ryan Erb
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What is the point of D0-D3 on LCD?

The Arduino LiquidCrystal library has 4 constructors with different arguments: LiquidCrystal(rs, enable, d4, d5, d6, d7) LiquidCrystal(rs, rw, enable, d4, d5, d6, d7) LiquidCrystal(rs, enable, d0, d1, d2, d3, d4, d5, d6, d7) LiquidCrystal(rs, rw,…
Friend of Kim
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Changing the brightness on a Hitachi HD44780 LCD screen

I am finishing up a project- an LED game alarm clock. Seeing as this is a clock, I need to have a way to conserve power, which right now my Uno R3+ is eating up like a politician. My question is, how do I turn the screen off, or turn the back-light…
Mr. Floppy
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How to show the º character in a LCD?

I have a 16x2 LCD and I want to show a temperature: 23 ºC. But the º symbol is not properly shown. It shows a strange character instead of the º symbol .
Roby Sottini
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Why is my LCD 16*2 is not displaying any characters, although all the wiring is correct?

Recently I have linked up a typical 16*2 LCD (Liquid Crystal Display) display to my Arduino Uno and have linked all the pins up. Here is my connection:(LCD pin first) 1=GND, 2=+5v, 4=11, 6=12, 11=5, 12=4, 12=3, 14=2, 15=backlight positive,…
Stratmoss
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2.4" TFT LCD Shield isn't working on Arduino Mega

Even on ebay's website it is mentioned that I can't use 2.4" TFT LCD Shield display on attach to Arduino Mega. The problem is that I bought this shield by mistake. I want to put this shield onto Arduino Mega 2560. Is there a way to combine Mega and…
Bay
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I2C LCD Serial Interface Board not displaying text (wrong pins?)

I have a 1602 LCD screen that works fine on its own. However I wanted to free some pins by using an I2C / IIC LCD controller I purchased separately. While the controller seems to be communicating with my Arduino UNO on the right address, I cannot…
Bort
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Sainsmart LCD 2004 - LiquidCrytal_I2C library issue unable to compile

I bought a Sainsmart LCD2004 from Amazon to use with my Arduino Uno. I understand that since this LCD uses I2C a new library needs to be downloaded. From the sainsmart website I dowloaded the LCD 2004…
Caesar
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Hooking up LCD screens reclaimed from old camcorders to Arduino

Has anyone had any luck using LCD screens reclaimed from old electronics with Arduino, such as camcorders etc? My 8 yr old has an old sony handycam (dcr-trv103) in bits and now wants to use the LCD screen with the arduino. I'm not even sure how I…
Agent Zebra
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ATTiny85 I2C LCD

My setup is as follows: Arduino IDE 1.6.11 Arduino Pro Mini as ISP ATTiny85 1602A LCD with I2C board The libraries I use are: TinyWireM (source: https://github.com/adafruit/TinyWireM) LiquidCrystal_I2C (modified for ATTiny) (source:…
Thijs
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Adding an LCD to Uno but not enough pins left

I am an absolute beginner and wanted to build a simple home automation system using DTMF module using this guide. My problem is out of 12 pins most of them are getting used in DTMF module(5) and the relay module(4). So how do i add an LCD display to…
Vaibhav
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RePaper 2.7" eInk Display with Arduino Due

I got a RePaper 2.7' eInk display that unfortunately doesn't support Arduino Mega because of its limited SRAM capacity (8k bytes). I am porting the library to Arduino Due because of its sufficient RAM capacity (96 KB in two banks: 64KB and 32KB). I…
Shirsha Ghosh
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Save some arduino pins when driving a 4 digits 7 segments display

I built a simple clock using a 4 digits 7 segments LCD display. I display one digit at a time, switching on and off very quicky and cycling through digits. Everything is ok, but I used 8 + 4 = 12 arduino pins. I need 2 more pins for other features…
Ghigo
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LCD scrolling down problem

I have a list of set-ups and I only have 2 rows in the lcd , I'm trying to scroll down for the moment and I'm doing this by changing the row in the setcursor function to either 0 or 1. However since that I'll be having about 10 set-ups I used an…
user730
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Multiple Push buttons to one input

So I am trying to use one input to control an LCD display. The goal being that once one of the buttons is pressed it delivers a message. I have watched quite a few tutorials and can get the program to work sometimes. Yet, it is still pretty buggy…
David Wisniewski
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