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

LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); //0x27 is the I2C address and the rest are pin assignments

int red = 0;
int green = 0;
int blue = 0;

void setup()
{
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(10, INPUT);

//setting up output frequency scaling of color sensor to 100%
  digitalWrite(8, HIGH); //pin S0 is set to high
  digitalWrite(9, HIGH); //pin S1 is set to high


  lcd.begin(16,2); //initializing the LCD display, 16x2 is the LCD dimensions

  Serial.begin(9600);
}

void loop()
{
// Setting the pins for the red photodiodes
  digitalWrite(12, LOW);
  digitalWrite(11, LOW);
// Reading the output frequency from pin 10
  red = pulseIn(10, LOW);
  delay(100);

// Setting the pins for the blue photodiodes
  digitalWrite(11, HIGH);
// Reading the output frequency from pin 10
  blue = pulseIn(10, LOW);
  delay(100);

// Setting the pins for the green photodiodes
  digitalWrite(12, HIGH);
// Reading the output frequency from pin 10
  green = pulseIn(10, LOW);
  delay(100);

lcd.clear();//clears LCD display

if (red < blue && red < green)
  {
  Serial.println(" Red");
  lcd.print("Red");
  }

  else if (blue < red && blue < green)
  {
  Serial.println(" Blue");
  lcd.print("Blue");
  }

  else if (green < red && green < blue)
  {
  Serial.println(" Green");
  lcd.print("Green");
  }

  delay(500);

}