Introduction

In the world of electronics and automation, color detection and sorting systems play a vital role in various industries, from manufacturing to agriculture. These systems use advanced technologies to identify and categorize objects based on their color, ensuring precision and efficiency in a wide range of applications. In this article, we will explore how to create a Color Detection and Sorting System with a LCD Feedback using Arduino.

Working Principle

The Color Detection and Sorting System with LCD Feedback relies on color sensors to identify the color of objects passing through a cavity. Once the color is detected, the system triggers an actuator, such as a servo motor or a solenoid, to sort the objects into predefined bins or compartments. Additionally, an LCD screen provides real-time feedback on the sorting process, making it user-friendly and informative.

Things We Need

1. Arduino Uno
2. Color sensor module (e.g., TCS3200 or TCS34725)
3. Servo motor
4. Object placement mechanism
5. LCD screen 16×2 with I2C Module
6. Breadboard and jumper wires
7. Power supply for the components
8. Objects to be sorted (with distinguishable colors)

TCS34725 Sensor Module

The TCS34725 is capable of accurately measuring a wide range of colors and can be used in applications such as color sorting, ambient light sensing, and color temperature measurement. It offers high sensitivity and precision, making it a popular choice in various industries, including consumer electronics and industrial automation. Additionally, the sensor often includes features like adjustable integration times and automatic gain control to optimize its performance under different lighting conditions.

Circuit Diagram

Working of the System with Arduino

1. Color Detection: The color sensor module is placed in close proximity to the object to be sorted. It emits light onto the object and measures the reflected light’s frequency. Different colors reflect light at distinct frequencies, allowing the sensor to identify the color.
2. Arduino Control: The Arduino Uno acts as the brain of the system. It receives data from the color sensor and processes it using a programmed algorithm. The Arduino also controls the LCD screen to display real-time information.
3. Sorting Mechanism: Depending on the color detected, the Arduino triggers the servo motor to direct the object into the appropriate bin or compartment. For example, if a red object is detected, the system will sort it into the “red” bin.

Arduino Code

#include <Wire.h>
#include <Adafruit_TCS34725.h>
#include <Servo.h>
#include <LiquidCrystal_I2C.h>

Adafruit_TCS34725 colorSensor = Adafruit_TCS34725(TCS34725_INTEGRATIONTIME_700MS, TCS34725_GAIN_1X);
Servo sortingServo;
LiquidCrystal_I2C lcd(0x27, 16, 2, 2, 3);  // Change the I2C address, LCD dimensions, and pins.

void setup() {
  colorSensor.begin();
  sortingServo.attach(9); // Change the pin number accordingly.

  // Initialize and display a welcome message on the LCD.
  lcd.init();
  lcd.backlight();
  lcd.print("Color Sorter");
}

void loop() {
  uint16_t clear, red, green, blue;
  colorSensor.getRawData(&red, &green, &blue, &clear);

  // Implement your color detection logic here.
  if (red > 2000 && green < 1000 && blue < 1000) {
    // Red detected, sort to the red bin.
    sortingServo.write(90); // Position servo for red bin.
    lcd.clear();
    lcd.print("Red Detected");
    delay(1000);
  } else if (red < 1000 && green > 2000 && blue < 1000) {
    // Green detected, sort to the green bin.
    sortingServo.write(45); // Position servo for green bin.
    lcd.clear();
    lcd.print("Green Detected");
    delay(1000);
  } else if (red < 1000 && green < 1000 && blue > 2000) {
    // Blue detected, sort to the blue bin.
    sortingServo.write(0); // Position servo for blue bin.
    lcd.clear();
    lcd.print("Blue Detected");
    delay(1000);
  } else {
    // No specific color detected.
    lcd.clear();
    lcd.print("No Color Detected");
    delay(1000);
  }
}

Conclusion

Building a Color Detection and Sorting System with LCD Feedback using Arduino is an exciting project that demonstrates the power of electronics and automation in real-world applications. This system can be customized and scaled for various industries, such as agriculture for sorting fruits, manufacturing for quality control, or even as an educational tool for teaching automation concepts. With the right components, programming skills, and a bit of creativity, you can create a versatile sorting system that enhances efficiency and accuracy in your chosen application. Happy building!