Arduino LCD I2C tutorial | how to program LCD

Hello There, Here is a Basic Video Tutorial About "I2C L.C.D.", in which we will Interface and Program L.C.D. with our Arduino UNO microcontroller.

-what is I2C?-

I2C stands for "Inter-Integrated Circuit", which is basically synchronous multi-master, multi-slave, technique, which was invented in 1982 by Phillips semiconductors.

-Parts Needed for this Tutorial-

16 x 2 I2C L.C.D. Display.
Arduino UNO microcontroller Board.
Male To Female Jumper Wires.

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-Important Links-

MINOV (written BLOG)

(INSTRUCTABLES Link for Detailed Step by Step Written article with arduino codes)

( for arduino reference)

( LiquidCrystal_I2C library by Frank)

( Arduino Basics Tutorial)

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[boasdelely]

If it don't work: try to change the code: in stead of lcd.init type lcd.begin, for me this worked.

[atomalpha]

please what to do with this error:




Arduino: 1.8.12 (Windows 10), Board: "Arduino Uno"




^

In file included from



Hello_Freinds:10:12: error: 'int LiquidCrystal_I2C::init()' is private within this context

lcd.init();

[Circuitsplanet]

WHY IT GIVES ME THIS ERROR
no matching function to call for LiquidCrystal_I2C::begin()

code


#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup()
{

lcd.begin();


lcd.backlight();
lcd.clear();
lcd.setCursor(4, 0);
lcd.print("Hackster");
}

void loop()
{
}

[leofranssen]

Thanks a thousand times. You are the first one giving me software without falts. Thanks for that.
Best regards, Leo, The Netherlands.

[boasdelely]

hey bro, when i try tu upload the code is says Within this context, i used the libary you gave in the description.

[Mhd]

Good day sir, thank you for making this helpful video, but I've made all the required steps and still the LCD doesn't work, all the connections are fixed and the libraries are included, the LCD is on but no characters at all!! What's seems to be the issue here?!

[milespeterson]

I have a problem and you BETTER respond. I wrote the code exactly how the video said to do it and it gives me an error. "class LiquidCrystal_I2C" has no member named 'init' how to fix it? please let me know.

[symountamed]

If u here in 2022 and u have a problem with init.... Replace init with begin.

[francescostrano]

ciao. non so potresti aiutarmi, mi hanno regalato una board simile arduino ma a bordo un atmega 64 ho visto il tool di arduino uno mega ecc.. non e' supportato, comunque mi sono messo alla ricerca e finalmente con una interfaccia isp di pochi euro riesco a programmarlo. il problema e che in rete non trono nulla riguardo utilizzo porte analogiche e protocolli i2c per dispay e lcd, mi potresti aiutare tu con qualche esempio sempre se puoi ..grazie Francesco

[ricksanchez-drnq]

Hello sir my lcd prints only first char of the word can you help me

[theboys]

hello I have a question if we want to make a alert code like for alcohol detector it will print the BAC, if it is increasing or decreasing ?

[thomasstokes]

Thank you so much! I was having problems with my LCD, but your video showed I needed the I2C scanner to get the hexadecimal code. Thanks

[CircuitCreator]

PIN 1 》GROUND
PIN 2 》POSITIVE
PIN 3 》10K POT
PIN 4 》A12
PIN 5 》GROUND
PIN 6 》A11
PIN 11 》A5
PIN 12 》A4
PIN 13 》A3
PIN 14 》A2
PIN 15 》220Ω
PIN 16 》GROUND

[qubitevo]

My LCD I2C scanner is showing 0x3F, what will I do now ?

[karamveersingh]

Need help on i2c scanner.
Cannot find the i2c lcd address.
Always show found 0 devices.
Using arduino nano
Sda on a4
Scl on a5

[simonboy]

Hi, i have done uploading the code. Only the letter "h" is appearing on my lcd panel, can i have some assistance in this ? thank you.

[aramisc]

I haven’t being able to use my LCD because mine only has three cables instead of four and I don’t have the code and or the picture on how to install it. Can you help please?

[TheFreshHotDog]

I get a error message saying 'lcd' was not declared in this scope. How do i fix this

[djamaatul]

what name or how working effect clock update in this video ?

[lindamy]

I've adjust the contrast but there was nothing sentences show in lcd. Can you help me :( ?