Color Identificator

int S2 = 7;  //Setting up pins of the color sensor
int S3 = 8;  //Setting up pins of the color sensor
int outPin = 4;  //Setting up pins of the color sensor
unsigned int redPulseWidth;  //variable to measure the red component in the color shown to the color sensor
unsigned int greenPulseWidth;  //variable to measure the green component in the color shown to the color sensor
unsigned int bluePulseWidth;  //variable to measure the blue component in the color shown to the color sensor
float redVolt;  //variable to store the voltage to be written to red pin of the RGB led
float greenVolt;  //variable to store the voltage to be written to green pin of the RGB led
float blueVolt;  //variable to store the voltage to be written to blue pin of the RGB led

void setup() {
  pinMode(S2, OUTPUT);  //setting pins S2 AND S3 as output pins
  pinMode(S3, OUTPUT);
  pinMode(outPin, INPUT);  //setting outPin as input pin
  Serial.begin(9600);  //starting the serial port
}

void loop() {
  digitalWrite(S2, LOW);  //by setting S2 AND S3 low we are reading the red component of the color
  digitalWrite(S3, LOW);
  redPulseWidth = pulseIn(outPin, LOW); //we are storing the red component as a number between 1,02,400. P.S. THE BIGGER THE NUMBER SMALLER THE COLOR COMPONENT AND VICE VERSA

  digitalWrite(S2, LOW);  //by setting S2 low and S3 high we are reading the blue component of the color
  digitalWrite(S3, HIGH);  
  bluePulseWidth = pulseIn(outPin, LOW);  //we are storing the blue component as a number between 0 and 1,02,400

  digitalWrite(S2, HIGH);  //by setting S2 AND S3 high we are reading the green componet of the color
  digitalWrite(S3, HIGH);
  greenPulseWidth = pulseIn(outPin, LOW);  //we are storing the green component as a number between 0 and 1,02,400

  redVolt = redPulseWidth/400.-1; //turning the pulse widths into numbers between 0 and 255
  redVolt = (255 - redVolt);  //then reversing the smaller number into bigger one and bigger number into smaller one
  greenVolt = greenPulseWidth/400.-1;
  greenVolt = (255 - greenVolt);
  blueVolt = bluePulseWidth/400.-1;
  blueVolt = (255 - blueVolt);

  Serial.print(redVolt);
  Serial.print(", ");
  Serial.print(blueVolt);
  Serial.print(", ");
  Serial.println(greenVolt);
  delay(250);

  //writing all the conditions and setting the redVolt, greenVolt, and blueVolt accordingly because as you can see in the serial monitor the red, blue, and green components are similar 
  //and if we pass on these values straight to the RGB it won't work. Hence, we are writing the following conditions
  if(redVolt>greenVolt && greenVolt>blueVolt){
    redVolt = 255;
    greenVolt = greenVolt/2;
    blueVolt = 0;
    }
    
  if(redVolt>blueVolt && greenVolt<blueVolt){
    redVolt = 255;
    blueVolt = blueVolt/2;
    greenVolt = 0;
    }

      if(greenVolt>redVolt && blueVolt<redVolt){
    greenVolt = 255;
    redVolt = redVolt/2;
    blueVolt = 0;
    }

    
  if(greenVolt>blueVolt && blueVolt>redVolt){
    greenVolt = 255;
    blueVolt = blueVolt/2;
    redVolt = 0;
    }

    
  if(blueVolt>redVolt && redVolt>greenVolt){
    blueVolt = 255;
    redVolt = redVolt/2;
    greenVolt = 0;
    }

    
  if(blueVolt>greenVolt && greenVolt>redVolt){
    redVolt = 0;
    greenVolt = greenVolt/2;
    blueVolt = 255;
    }
    redVolt = redVolt*8;
    blueVolt = blueVolt/8;
    greenVolt = greenVolt/8;

    analogWrite(10, redVolt); //writing values to RGB pins of the colour   
    analogWrite(9, greenVolt);
    analogWrite(3, blueVolt);
    
}