Arduino and RGB LED Interfacing

Interfacing RGB LED with Arduino

Working Video:

Example Code:

// RGB LED (Common Anode)

#include <Wire.h> 

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2); //LCD address  0x27  

int redPin= 5;

int greenPin = 6;

int  bluePin = 7;

void setup() {

  lcd.init();    // initialize the lcd 

  lcd.backlight();  // lcd backlight ON

  lcd.setCursor(0,0);  // 0 row, 0 column

  //Defining the pins as OUTPUT

  pinMode(redPin,  OUTPUT);              

  pinMode(greenPin, OUTPUT);

  pinMode(bluePin, OUTPUT);

}

void  loop() {

  setColor(0, 255, 255); // Red Color

  delay(2000);

  setColor(255,  0, 255); // Green Color

  delay(2000);

  setColor(255, 255, 0); // Blue Color

  delay(2000);

  setColor(0, 0, 0); // White Color

  delay(2000);

}

void setColor(int redValue, int greenValue,  int blueValue) {

  analogWrite(redPin, redValue);

  analogWrite(greenPin,  greenValue);

  analogWrite(bluePin, blueValue);

  lcd.clear();

  lcd.print("Red=");

  lcd.print(255-redValue);

  lcd.print(" ");

  lcd.print("Grn=");

  lcd.print(255-greenValue);

  lcd.setCursor(0,1);  

  lcd.print("Blue=");

  lcd.print(255-blueValue);

}