LCD 20x4 I2C ARDUINO

Description: Interfacing a 20x4 LCD with I2C Module to Arduino Uno:
A 20x4 LCD (Liquid Crystal Display) is a popular display module that can show up to 20 characters per row across 4 rows. Interfacing it with an I2C module significantly reduces the number of pins required, allowing you to connect it to an Arduino Uno with just two data lines: SDA (Serial Data) and SCL (Serial Clock).
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Key Features of the 20x4 LCD with I2C Module:
Display Capacity: Supports 20 characters in 4 rows.
I2C Communication: Reduces wiring complexity by requiring only 2 data lines.
Backlight Control: Built-in LED backlight for improved readability.
Adjustable Contrast: Potentiometer on the I2C module allows contrast tuning.
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Hardware Connections
The I2C module has four pins that connect to the Arduino Uno:
VCC: Connects to the Arduino Uno’s 5V pin.
GND: Connects to the Arduino Uno’s GND pin.
SDA: Connects to the Arduino Uno’s A4 pin.
SCL: Connects to the Arduino Uno’s A5 pin.
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I2C Address
The I2C module operates on an address (typically 0x27 or 0x3F). You can use an I2C scanner sketch to detect the correct address.
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Steps to Interface
1- Wire the Connections:
Connect the VCC, GND, SDA, and SCL pins as described above.
2- Install Necessary Library:
Install the LiquidCrystal_I2C library using Arduino IDE’s Library Manager.
3- Write the Code:
Use the LiquidCrystal_I2C library to initialize and control the LCD.
4- Upload and Test:
Upload the sketch to the Arduino Uno, ensuring it correctly displays the desired output.