🔹 16×4 Character LCD – Blue Backlight (Soldered Header)
A classic 16×4 LCD module with white-on-blue backlight, powered by the robust HD44780/ST7066 controller. Easily integrates with Arduino, Raspberry Pi, and microcontrollers, perfect for advanced DIY projects, robotics dashboards, and data displays.
🛠 Wiring & Setup with Arduino (Parallel)
CopyEdit
#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 10, 5, 4, 3);
// RS, E, D4, D5, D6, D7
void setup(){
lcd.begin(20, 4);
lcd.print("Hello, 20x4 LCD!");
}
void loop(){}
🔌 I²C Integration (6-Wire Setup)
Install via Arduino Library Manager:
Sketch → Include Library → Manage Libraries… → search “LiquidCrystal I2C” → Install
Arduino Wiring: VCC → 5 V; GND → GND; SDA → A4; SCL → A5
CopyEdit
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 4);
void setup(){
lcd.init();
lcd.backlight();
lcd.setCursor(0,0);
lcd.print("I2C 20x4 LCD");
}
void loop(){}
🎥 YouTube Tutorials
📄 Datasheet & Links
