Project 13:  Arduino Color Sensor TCS3200 & LCD

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  https://arduino4everyones.blogspot.com/

  Color ranges  2 cm till 5 cm

  Main Ideas:

  The TCS3200 color sensor can detect a wide range of colors based on their wavelength.

  This sensor is can be used for color recognition/detection projects such as color matching, color sorting.

  The sensor has four different types of filter covered diodes. In the 8 x 8 array of photodiodes,

  16 photodiodes have Red filters, 16 have Blue filters, 16 have Green filters and the rest 16 photodiodes are

  clear with no filters. Each type can be activated using the S2, S3 selection inputs.

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#include <Wire.h>

#include <LiquidCrystal_PCF8574.h>

LiquidCrystal_PCF8574 lcd(0x27);  // set the LCD address to 0x27 for a 16 chars and 2 line display

// TCS230 or TCS3200 pins wiring to Arduino

#define S0 2  // gray  

#define S1 3  //maron

#define S2 4  //yellow 

#define S3 5 //green

#define sensorOut 6 //orange

// Capture frequencies read by the TCS230/TCS3200 Sensor

int redFrequency = 0;

int greenFrequency = 0;

int blueFrequency = 0;

//Define the colors

//red color

int redColor = 0;

//green color

int greenColor = 0;

//blue color

int blueColor = 0;

void setup() {

  // Setting the outputs

  pinMode(S0, OUTPUT);

  pinMode(S1, OUTPUT);

  pinMode(S2, OUTPUT);

  pinMode(S3, OUTPUT);

  // Setting the sensorOut as an input

  pinMode(sensorOut, INPUT);

  // Setting frequency scaling to 20%

  digitalWrite(S0, HIGH);

  digitalWrite(S1, LOW);

  // Begins serial communication

  Serial.begin(9600);

  int LCDError;

  Serial.println("LCD...");

  // http://arduino4everyones.blogspot.com

  Wire.begin();

  Wire.beginTransmission(0x27); //Define LCD Address

  LCDError = Wire.endTransmission();

  Serial.print("LCD Error Found: ");

  Serial.print(LCDError);

  if (LCDError == 0) {

    Serial.println("No Error: LCD found.");

  } else {

    Serial.println("LCD is Missing ,  check connection.");

  }

  // initialize the lcd

  lcd.begin(16, 2);

  lcd.setBacklight(255);

  lcd.home();

  lcd.clear();

  lcd.print("LCD Found");

  delay(1500);

  lcd.clear();

  lcd.print("Welcome to ");

  lcd.setCursor(0, 1);

  lcd.print("Arduino4Everyones");

  delay(2000);

  lcd.clear();

  lcd.print("Color Detection");

  lcd.setCursor(0, 1);

  lcd.print("Started... ");

  delay(3000);

}

void loop() {

  // Set RED (R) filtered photodiodes to be read

  digitalWrite(S2, LOW);

  digitalWrite(S3, LOW);

  // Reading the output frequency

  redFrequency = pulseIn(sensorOut, LOW);

  // Remaping the value of the RED (R) frequency from 0 to 255

  // You must replace with your own values. Here's an example:

  // this range for 2-3 cm distance

  //redColor = map(redFrequency, 137, 144, 255, 0);

  redColor = redFrequency;

  // Printing the RED (R) value

  Serial.print(" R = ");

  Serial.print(redColor);

  delay(100);

  // Setting GREEN (G) filtered photodiodes to be read

  digitalWrite(S2, HIGH);

  digitalWrite(S3, HIGH);

  // Reading the output frequency

  greenFrequency = pulseIn(sensorOut, LOW);

  // Remaping the value of the GREEN (G) frequency from 0 to 255

  // You must replace with your own values. Here's an example:

  // Printing the GREEN (G) value

  // this range for 2-3 cm distance

  //greenColor = map(greenFrequency,  206, 212, 255, 0);

  greenColor = greenFrequency;

  // Printing the GREEN (G) value

  Serial.print(" G = ");

  Serial.print(greenColor);

  delay(100);

  // Setting BLUE (B) filtered photodiodes to be read

  digitalWrite(S2, LOW);

  digitalWrite(S3, HIGH);

  // Reading the output frequency

  blueFrequency = pulseIn(sensorOut, LOW);

  // Remaping the value of the BLUE (B) frequency from 0 to 255

  // You must replace with your own values. Here's an example:

  // this range for 2-5 cm distance

  //blueColor = map(blueFrequency, 96, 102, 255, 0);

  blueColor = blueFrequency;

  // Printing the BLUE (B) value

  Serial.print(" B = ");

  Serial.print(blueColor);

  Serial.println("");

  delay(100);

  // Checks the current detected color and prints

  // a message in the serial monitor

  if (redColor < greenColor && redColor < blueColor) {

    Serial.println("****** Red color detected *****");

    lcd.clear();

    lcd.print("Red Color");

    lcd.setCursor(0, 1);

    lcd.print("Detected !");

  }

  if (greenColor < redColor && greenColor < blueColor) {

    Serial.println("****** Green color detected ******");

    lcd.clear();

    lcd.print("Green Color");

    lcd.setCursor(0, 1);

    lcd.print("Detected !");

  }

  if (blueColor < redColor && blueColor < greenColor) {

    Serial.println("****** Blue color detected ******");

    lcd.clear();

    lcd.print("Blue Color ");

    lcd.setCursor(0, 1);

    lcd.print("Detected !");

  }

  delay(400);

  Serial.println("");

}