/*     Arduino Color Sensing Tutorial
 *
 *  by Dejan Nedelkovski, www.HowToMechatronics.com
 *
 */

#define S0 8
#define S1 9
#define S2 11
#define S3 10
#define sensorOut 12

int frequency = 0;


void setup() {
  pinMode(S0, OUTPUT);
  pinMode(S1, OUTPUT);
  pinMode(S2, OUTPUT);
  pinMode(S3, OUTPUT);
  pinMode(sensorOut, INPUT);

  // Setting frequency-scaling to 20%
  digitalWrite(S0,HIGH);
  digitalWrite(S1,LOW);

  Serial.begin(9600);
}
void loop() {
  // Setting red filtered photodiodes to be read
  digitalWrite(S2,LOW);
  digitalWrite(S3,LOW);

  // Reading the output frequency
  frequency = pulseIn(sensorOut, LOW);

  // Printing the value on the serial monitor
  Serial.print("Red= ");//printing name
  Serial.print(frequency);//printing RED color frequency
  Serial.print("  ");

  // Setting Green filtered photodiodes to be read
  digitalWrite(S2,HIGH);
  digitalWrite(S3,HIGH);

  // Reading the output frequency
  frequency = pulseIn(sensorOut, LOW);

  // Printing the value on the serial monitor
  Serial.print("Green= ");//printing name
  Serial.print(frequency);//printing RED color frequency
  Serial.print("  ");

  // Setting Blue filtered photodiodes to be read
  digitalWrite(S2,LOW);
  digitalWrite(S3,HIGH);

  // Reading the output frequency
  frequency = pulseIn(sensorOut, LOW);

  // Printing the value on the serial monitor
  Serial.print("Blue= ");//printing name
  Serial.print(frequency);//printing RED color frequency
  Serial.println("  ");
  delay(100);
}